Document Information


PMID 16741160  (  )
Title Tumor necrosis factor-alpha induces endothelial dysfunction in the prediabetic metabolic syndrome.
Abstract Inflammation is a condition that underscores many cardiovascular pathologies including endothelial dysfunction, but no link is yet established between the vascular pathology of the metabolic syndrome with a particular inflammatory cytokine. We hypothesized that impairments in coronary endothelial function in the obese condition the prediabetic metabolic syndrome is caused by TNF-alpha overexpression. To test this, we measured endothelium-dependent (acetylcholine) and -independent vasodilation (sodium nitroprusside) of isolated, pressurized coronary small arteries from lean control and Zucker obese fatty (ZOF, a model of prediabetic metabolic syndrome) rats. In ZOF rats, dilation to ACh was blunted compared with lean rats, but sodium nitroprusside-induced dilation was comparable. Superoxide (O2*-) generation was elevated in vessels from ZOF rats compared with lean rats, and administration of the O2*- scavenger TEMPOL, NAD(P)H oxidase inhibitor (apocynin), or anti-TNF-alpha restored endothelium-dependent dilation in the ZOF rats. Real-time PCR and Western blotting revealed that mRNA and protein of TNF-alpha were higher in ZOF rats than that in lean rats, whereas eNOS protein levels were reduced in the ZOF versus lean rats. Immunostaining showed that TNF-alpha in ZOF rat heart is localized in endothelial cells and vascular smooth muscle cells. Expression of NAD(P)H subunits p22 and p40-phox were elevated in ZOF compared with lean animals. Administration of TNF-alpha more than 3 days also induced expression of these NAD(P)H subunits and abrogated endothelium-dependent dilation. In conclusion, the results demonstrate the endothelial dysfunction occurring in the metabolic syndrome is the result of effects of the inflammatory cytokine TNF-alpha and subsequent production of O2*-. Center, New Orleans, USA.

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Targets by SciMiner Summary

HUGO ID Symbol Target Name #Occur ActualStr
11892TNFtumor necrosis factor (TNF superfamily, member 2)244tumor necrosis factor | TNF-alpha-induced | TNF-alpha-Induced | tnf alpha |
7876NOS3nitric oxide synthase 3 (endothelial cell)24eNOS |
2577CYBAcytochrome b-245, alpha polypeptide16p22 phox | p22-phox |
12805XDHxanthine dehydrogenase7xanthine oxidase |
7661NCF2neutrophil cytosolic factor 2 (65kDa, chronic granulomatous disease, autosomal 2)6p67 phox | p67-phox |
6081INSinsulin5insulin |
12726VWFvon Willebrand factor5von willebrand factor | vWF |
1693CD68CD68 molecule4CD68 |
129ACTA1actin, alpha 1, skeletal muscle4alpha-actin | alpha actin |
7872NOS1nitric oxide synthase 1 (neuronal)4NOS |
6018IL6interleukin 6 (interferon, beta 2)3IL-6 | il 6 | interleukin 6 |
2367CRPC-reactive protein, pentraxin-related2CRP | c reactive protein |
2578CYBBcytochrome b-245, beta polypeptide (chronic granulomatous disease)2gp-91-phox |
7097MIFmacrophage migration inhibitory factor (glycosylation-inhibiting factor)1MIF |
195ADAM17ADAM metallopeptidase domain 17 (tumor necrosis factor, alpha, converting enzyme)1tnf alpha converting enzyme |
6554LEPRleptin receptor1leptin receptor |
143ACTC1actin, alpha, cardiac muscle 11smooth muscle actin |
7660NCF1neutrophil cytosolic factor 1, (chronic granulomatous disease, autosomal 1)1p47 |
4141GAPDHglyceraldehyde-3-phosphate dehydrogenase1GAPDH |
11179SOD1superoxide dismutase 1, soluble (amyotrophic lateral sclerosis 1 (adult))1superoxide dismutase |

 


Targets by SciMiner Full list

HUGO ID Symbol Name ActualStr Score FlankingText
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7the obese condition the prediabetic metabolic syndrome is caused by TNF-alpha overexpression
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7PCR and Western blotting revealed that mRNA and protein of TNF-alpha were higher in ZOF rats than that in lean rats
7876NOS3nitric oxide synthase 3 (endothelial cell)eNOS7.0higher in ZOF rats than that in lean rats whereas eNOS protein levels were reduced in the ZOF versus lean rats
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7Immunostaining showed that TNF-alpha in ZOF rat heart is localized in endothelial cells and
2577CYBAcytochrome b-245, alpha polypeptidep220.0Expression of NAD(P)H NAD P H subunits p22 and p40-phox were elevated in ZOF compared with lean animals
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7Administration of TNF-alpha more than 3 days also induced expression of these NAD(P)H
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7syndrome is the result of effects of the inflammatory cytokine TNF-alpha and subsequent production of O 2 _amp_#183
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF4.4Tumor necrosis factor TNF -alpha a proinflammatory cytokine originally defined by its antitumor activity
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7Therefore we proposed that TNF-alpha may be the inflammatory basis leading from the metabolic syndrome
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7evaluated the endothelium-dependent and -independent vasodilation the circulating levels of TNF-alpha and its expression at the wall of coronary small arteries
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7We also tested the mechanisms by which TNF-alpha induces endothelial dysfunction and the role of O 2 _amp_#183
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7Determination of Plasma TNF-alpha
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7Plasma TNF-alpha was measured using BIO-Plex mouse 3-plex assay (Bio-Rad Bio-Rad Laboratories
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7were added to the microplate to assess the level of TNF-alpha in plasma
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7TNF-alpha concentrations (picograms picograms per milliliter were automatically calculated by BIO-Plex
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7Treatment With TNF-alpha Apocynin and TNF-alpha Neutralization
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7Treatment With TNF-alpha Apocynin and TNF-alpha Neutralization
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7We administered TNF-alpha (10 10 microg/kg, microg kg IP R_amp_D Systems to lean
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7Systems to lean rats for 3 days to determine whether TNF-alpha can inhibit coronary arterial dilations mediated by NO
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7We also tested whether TNF-alpha affected mRNA expression of NAD(P)H NAD P H in lean
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7rats and test whether apocynin affected the protein expression of TNF-alpha and eNOS
7876NOS3nitric oxide synthase 3 (endothelial cell)eNOS7.0test whether apocynin affected the protein expression of TNF-alpha and eNOS
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7The neutralizing antibody to TNF-alpha anti-TNF-alpha used in these studies was 2E2 monoclonal antibody (2E2
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7this dose of antibody was based on our estimates of TNF-alpha expression (in in the low nanogram or picogram range the
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha.1.7was able to neutralize 10- to 100-fold this amount of TNF-alpha.
7872NOS1nitric oxide synthase 1 (neuronal)NOS1.2these vasodilations were examined by treating the vessels with the NOS inhibitor N -monomethyl-L -arginine ( L -NMMA (10 10 micromol/L,
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7To determine whether TNF-alpha was played a role in endothelial injury in the metabolic
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7To determine the role of TNF-alpha and O 2 _amp_#183 anion in altered vasoactive responses in
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7mRNA Expression of TNF-alpha and NAD(P)H NAD P H Oxidase Subunits by Real-Time PCR
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7The primers of TNF-alpha and NAD(P)H NAD P H oxidase subunits (p22-phox, p22-phox p40-phox
2577CYBAcytochrome b-245, alpha polypeptidep22-phox1.5of TNF-alpha and NAD(P)H NAD P H oxidase subunits (p22-phox, p22-phox p40-phox p-47-phox p67-phox and gp-91-phox were designed (primer primer 3
7661NCF2neutrophil cytosolic factor 2 (65kDa, chronic granulomatous disease, autosomal 2)p67-phox1.5NAD(P)H NAD P H oxidase subunits (p22-phox, p22-phox p40-phox p-47-phox p67-phox and gp-91-phox were designed (primer primer 3 software and synthesized
2578CYBBcytochrome b-245, beta polypeptide (chronic granulomatous disease)gp-91-phox0.1P H oxidase subunits (p22-phox, p22-phox p40-phox p-47-phox p67-phox and gp-91-phox were designed (primer primer 3 software and synthesized (Qiagen) Qiagen
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.72 method and presented as fold change of transcripts for TNF-alpha gene and NAD(P)H NAD P H oxidase gene in ZOF
4141GAPDHglyceraldehyde-3-phosphate dehydrogenaseGAPDH0.0NAD P H oxidase gene in ZOF rats normalized to GAPDH compared with lean control rats (defined defined as 1.0-fold
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7Protein Expression of TNF-alpha and eNOS by Western Blot Analyses
7876NOS3nitric oxide synthase 3 (endothelial cell)eNOS7.0Protein Expression of TNF-alpha and eNOS by Western Blot Analyses
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7TNF-alpha and eNOS protein expression were detected by Western blot analysis
7876NOS3nitric oxide synthase 3 (endothelial cell)eNOS7.0TNF-alpha and eNOS protein expression were detected by Western blot analysis with the
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7were detected by Western blot analysis with the use of TNF-alpha primary antibodies (Santa Santa Cruz Biotechnology and eNOS primary antibody
7876NOS3nitric oxide synthase 3 (endothelial cell)eNOS7.0use of TNF-alpha primary antibodies (Santa Santa Cruz Biotechnology and eNOS primary antibody (Abcam) Abcam in 4 groups of lean rats
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7in Tris buffer then incubated with polyclonal goat antibody against TNF-alpha (R_amp_D R_amp_D systems and the endothelial cell marker von Willebrand
129ACTA1actin, alpha 1, skeletal musclealpha-actin0.3marker von Willebrand factor (ab6994, ab6994 Abcam or smooth muscle alpha-actin (1A4, 1A4 Calbiochem or macrophages (mouse mouse anti rat CD68
1693CD68CD68 moleculeCD680.3alpha-actin (1A4, 1A4 Calbiochem or macrophages (mouse mouse anti rat CD68 Serotec and then incubated with a secondary fluorescent antibody (Alexa
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7Plasma Concentration mRNA and Protein Expression of TNF-alpha
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha.1.7Figure 1 A shows elevations of plasma concentration of TNF-alpha.
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7Figure 1 B (real-time real-time PCR shows elevations of TNF-alpha expression
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.71 C (Western Western blotting shows the protein expression of TNF-alpha in isolated coronary small arteries of lean control rats ZOF
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7Our results suggest that overexpression of TNF-alpha induces activation of NAD(P)H NAD P H oxidase and production
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7Importantly our findings support the concept that TNF-alpha plays a pivotal role in endothelial dysfunction in the metabolic
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7Antibody neutralization of TNF-alpha prevented coronary endothelial dysfunction and reduced O 2 _amp_#183 generation
7876NOS3nitric oxide synthase 3 (endothelial cell)eNOS7.0and reduced O 2 _amp_#183 generation and protein expression of eNOS in ZOF rats
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7of anti-TNF-alpha on O 2 _amp_#183 production protein expression of TNF-alpha and eNOS and endothelial function in ZOF rats
7876NOS3nitric oxide synthase 3 (endothelial cell)eNOS7.0on O 2 _amp_#183 production protein expression of TNF-alpha and eNOS and endothelial function in ZOF rats
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7Molecular evidence indicated that the expression of TNF-alpha (mRNA mRNA and protein and mRNA expression of NAD(P)H NAD
2577CYBAcytochrome b-245, alpha polypeptidep22-phox1.5and mRNA expression of NAD(P)H NAD P H oxidase subunits p22-phox and p40-phox were significantly increased but protein expression of eNOS
7876NOS3nitric oxide synthase 3 (endothelial cell)eNOS7.0p22-phox and p40-phox were significantly increased but protein expression of eNOS was diminished in ZOF rats
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7TNF-alpha and the Metabolic Syndrome
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7TNF-alpha is overexpressed in obesity and likely mediates insulin resistance in
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7resistance in the major animal models of obesity neutralization of TNF-alpha with soluble TNF-alpha receptors results in the restoration of insulin
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7major animal models of obesity neutralization of TNF-alpha with soluble TNF-alpha receptors results in the restoration of insulin sensitivity and thereby
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7of insulin sensitivity and thereby demonstrates that the proinflammatory cytokine TNF-alpha is the mediator of insulin resistance
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7Studies in human show increased TNF-alpha interleukin-6 (IL-6), IL-6 C reactive protein (CRP), CRP and migration
6018IL6interleukin 6 (interferon, beta 2)IL-61.3Studies in human show increased TNF-alpha interleukin-6 (IL-6), IL-6 C reactive protein (CRP), CRP and migration inhibitory factor (MIF)
2367CRPC-reactive protein, pentraxin-relatedCRP0.6show increased TNF-alpha interleukin-6 (IL-6), IL-6 C reactive protein (CRP), CRP and migration inhibitory factor (MIF) MIF plasma levels indicating metabolic
7097MIFmacrophage migration inhibitory factor (glycosylation-inhibiting factor)MIF0.9C reactive protein (CRP), CRP and migration inhibitory factor (MIF) MIF plasma levels indicating metabolic syndrome is an inflammatory state
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7We found increased TNF-alpha mRNA expression (5-fold), 5-fold plasma concentration of TNF-alpha (8-fold), 8-fold
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7found increased TNF-alpha mRNA expression (5-fold), 5-fold plasma concentration of TNF-alpha (8-fold), 8-fold and protein expression of TNF-alpha (more more than
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7plasma concentration of TNF-alpha (8-fold), 8-fold and protein expression of TNF-alpha (more more than 3-fold in small coronary arteries in ZOF
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7If TNF-alpha is as we and others suspect 1 of the initiators
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7Our immunostaining results show TNF-alpha in ZOF rat heart is localized in ECs and vascular
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7production in vascular endothelial cells and smooth muscle cells by TNF-alpha would limit NO bioavailability and reduce NO-dependent dilation
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7Finally TNF-alpha can be stored within cells in a pre form and
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7stored within cells in a pre form and the enzyme TNF-alpha converting enzyme can rapidly increase levels of the active cytokine
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7There is no previous report on the endogenous role of TNF-alpha in this respect and it has been unclear whether TNF-alpha
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7TNF-alpha in this respect and it has been unclear whether TNF-alpha plays a direct role in endothelial dysfunction in the metabolic
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7Recent evidence supports the idea that the effect of TNF-alpha is NO dependent by producing a rapid inhibitory action on
7872NOS1nitric oxide synthase 1 (neuronal)NOS1.2by producing a rapid inhibitory action on NO synthase (NOS) NOS in the endothelium via activation of a sphingomyelinase/ceramide sphingomyelinase ceramide
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7pathway this mechanism is supposed to mediate the action of TNF-alpha thereby contributing to vascular endothelial dysfunction in coronary circulation under
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7In the present study we documented that TNF-alpha is critical for the development of endothelial dysfunction in the
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7TNF-alpha expression was significantly increased in ZOF rats anti-TNF-alpha restored NO-mediated
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7Furthermore administration of anti-TNF-alpha protected endothelial dysfunction induced by TNF-alpha in isolated vessels from lean control rats confirming that the
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7vasodilation was restored in ZOF rats after the treatment with TNF-alpha antibodies for 3 days (IP), IP and 3 days treatment
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7for 3 days (IP), IP and 3 days treatment with TNF-alpha (IP) IP mimicked endothelial dysfunction in lean rats both demonstrating
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7is in agreement with those of previous studies showing that TNF-alpha can decrease the release of endothelial NO and induce impairment
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7The link between TNF-alpha overexpression and O 2 _amp_#183 production has been investigated by
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha-induced1.7_amp_#183 scavenger and polyethylene glycol-conjugated superoxide dismutase (PEG-SOD) PEG-SOD prevented TNF-alpha-induced impairment of endothelium-dependent vasorelaxation in coronary arterioles
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7are consistent with these studies and support our hypotheses that TNF-alpha and O 2 _amp_#183 are connected in the production of
7876NOS3nitric oxide synthase 3 (endothelial cell)eNOS7.0Effect of eNOS on TNF-alpha-Induced Endothelial Dysfunction in the Metabolic Syndrome
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha-Induced1.7Effect of eNOS on TNF-alpha-Induced Endothelial Dysfunction in the Metabolic Syndrome
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha.1.7vascular endothelium is a major target for the actions of TNF-alpha.
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7TNF-alpha can decrease the release of endothelial NO and induce impairment
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7variety of vascular beds however the signaling pathways that couple TNF-alpha stimulation to endothelial dysfunction in small coronary arteries remain to
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7Zhang et al demonstrated that TNF-alpha inhibited NO-mediated endothelium-dependent vasorelaxation in coronary arterioles by activating sphingomyelinase
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7In the presence of L -NMMA TNF-alpha had no further inhibitory effect on the responses to endothelium-dependent
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7the responses to endothelium-dependent vasodilators suggesting that the effect of TNF-alpha is NO dependent
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7TNF-alpha is known to affect eNOS expression by affecting the half-life
7876NOS3nitric oxide synthase 3 (endothelial cell)eNOS7.0TNF-alpha is known to affect eNOS expression by affecting the half-life of its mRNA
7876NOS3nitric oxide synthase 3 (endothelial cell)eNOS7.0The protein expression of eNOS is significantly attenuated in isolated arteries in ZOF rats compared
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7We know that TNF-alpha impairs endothelial function by reducing NO bioavailability but little information
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7but little information is available in the literature on how TNF-alpha affects endothelial NOS (eNOS) eNOS activity in coronary arteries
7872NOS1nitric oxide synthase 1 (neuronal)NOS1.2is available in the literature on how TNF-alpha affects endothelial NOS (eNOS) eNOS activity in coronary arteries
7876NOS3nitric oxide synthase 3 (endothelial cell)eNOS7.0in the literature on how TNF-alpha affects endothelial NOS (eNOS) eNOS activity in coronary arteries
7876NOS3nitric oxide synthase 3 (endothelial cell)eNOS7.0there appears to be an inconsistency between NO-mediated dilation and eNOS protein ie restoration of dilation when eNOS protein is still
7876NOS3nitric oxide synthase 3 (endothelial cell)eNOS7.0NO-mediated dilation and eNOS protein ie restoration of dilation when eNOS protein is still decreased we believe there are some factors
7876NOS3nitric oxide synthase 3 (endothelial cell)eNOS7.0Not all eNOS is active some is bound to caveolin and secondly some
7876NOS3nitric oxide synthase 3 (endothelial cell)eNOS7.0is active some is bound to caveolin and secondly some eNOS may be dysfunctional because of limitations in BH4 or other
7876NOS3nitric oxide synthase 3 (endothelial cell)eNOS7.0The total amount of eNOS may not reflect the total production of NO and the
7876NOS3nitric oxide synthase 3 (endothelial cell)eNOS7.0dilation because there may not be a simple match of eNOS protein with NO-mediated dilation
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7results support the idea that the major enzyme activated by TNF-alpha in the metabolic syndrome is NAD(P)H NAD P H oxidase
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha-induced1.7Our results indicate that the pathway for TNF-alpha-induced endothelial dysfunction is mediated by activation of NAD(P)H NAD P
7876NOS3nitric oxide synthase 3 (endothelial cell)eNOS7.0striking increase in endothelial O 2 _amp_#183 production mediated by eNOS uncoupling
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7Our results demonstrate the production of TNF-alpha is essential in eliciting this oxidative stress
7660NCF1neutrophil cytosolic factor 1, (chronic granulomatous disease, autosomal 1)p470.6protein expression of NAD(P)H NAD P H oxidase subunits p22 p47 and p67-phox are significantly increased in diabetic human tissue versus
7661NCF2neutrophil cytosolic factor 2 (65kDa, chronic granulomatous disease, autosomal 2)p67-phox1.5of NAD(P)H NAD P H oxidase subunits p22 p47 and p67-phox are significantly increased in diabetic human tissue versus normal control
2577CYBAcytochrome b-245, alpha polypeptidep220.2the protein expression of NAD(P)H NAD P H oxidase subunits p22 p47 and p67-phox are significantly increased in diabetic human tissue
2577CYBAcytochrome b-245, alpha polypeptidep22-phox1.5that mRNA expression of NAD(P)H NAD P H oxidase subunit p22-phox and p40-phox are increased _amp_2-fold in ZOF rats versus lean
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7Most interestingly the TNF-alpha treatment also increases the mRNA expression of vascular NAD(P)H NAD
2577CYBAcytochrome b-245, alpha polypeptidep22-phox1.5mRNA expression of vascular NAD(P)H NAD P H oxidase subunits p22-phox and p40-phox in the control animals
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7Further studies are needed to determine the mechanism linking TNF-alpha receptor activation to NAD(P)H NAD P H oxidase
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7study indicates that the model of the metabolic syndrome increases TNF-alpha which stimulates endothelial generation of through activation of NAD(P)H NAD
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7of the metabolic syndrome_amp_#151 in terms of endothelial dysfunction_amp_#151 to TNF-alpha the subsequent activation of NAD(P)H NAD P H oxidase and
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7Taken together these results further support our hypothesis that TNF-alpha and O 2 _amp_#183 are connected in the production of
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7In conclusion we found that TNF-alpha overexpression impairs endothelium-dependent vasodilation in coronary arterioles of rats affected
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7endothelial function can be restored toward normal by administration of TNF-alpha antibodies
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7The mechanism by which TNF-alpha affects endothelial function seems to be an increased superoxide production
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha.1.7therapeutic target for cardiovascular diseases associated with elevated levels of TNF-alpha.
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7A Plasma concentration of inflammatory cytokine TNF-alpha is significantly increased in ZOF rats
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7B Real-time PCR of TNF-alpha mRNA from left ventricular coronary arteries in lean control and
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7B shows fold change of TNF-alpha mRNA expression which was significantly higher in ZOF rats than
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7C Western blotting showed the protein expression of TNF-alpha (normalized normalized to _amp_#223 -actin in isolated small coronary arteries
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7Bars represent the increased expression of TNF-alpha in ZOF rats as a percentage of control
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7The protein expression of TNF-alpha was higher in coronary arteries of ZOF rats than in
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7coronary arteries of ZOF rats than in lean controls but TNF-alpha expression in anti-TNF-alpha- or apocynin-treated ZOF rats was similar to
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7Dual fluorescence combining TNF-alpha with markers for macrophages (CD68), CD68 vascular smooth muscle (
1693CD68CD68 moleculeCD680.3Dual fluorescence combining TNF-alpha with markers for macrophages (CD68), CD68 vascular smooth muscle ( alpha-smooth muscle actin alpha-SMA or endothelial
12726VWFvon Willebrand factorvWF1.9muscle actin alpha-SMA or endothelial cells (von von Willebrand factor vWF using specific antibodies followed by a fluorescent-labeled secondary antibody
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7A through C Dual labeling of alpha-SMA (green) green and TNF-alpha (red) red in lean rat heart tissue
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7E through G Dual labeling of alpha-SMA (green) green and TNF-alpha (red) red in ZOF rat heart tissue
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7The insets D and H show a colocalization of TNF-alpha (red) red and alpha-SMA (green) green
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7through K Dual labeling of endothelial cells (red) red and TNF-alpha (green) green in ZOF rat heart tissues
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7The inset L shows a colocalization of TNF-alpha (green) green and vWF factor (red) red in ZOF rat
12726VWFvon Willebrand factorvWF1.9inset L shows a colocalization of TNF-alpha (green) green and vWF factor (red) red in ZOF rat heart tissues
1693CD68CD68 moleculeCD680.3M through O Dual labeling of CD68 (red) red and TNF-alpha (green) green in ZOF rat heart
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7M through O Dual labeling of CD68 (red) red and TNF-alpha (green) green in ZOF rat heart tissue the arrow in
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7inset P show a specific macrophage staining and absence of TNF-alpha staining
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7The immunostaining results show that TNF-alpha in ZOF rat heart is expressed in vascular smooth muscle
7872NOS1nitric oxide synthase 1 (neuronal)NOS1.2The NOS inhibitor L -NMMA (10 10 micromol/L, micromol L 30 minutes
7876NOS3nitric oxide synthase 3 (endothelial cell)eNOS7.0B Protein expression of eNOS in isolated coronary arteries of lean control ZOF ZOF rats
7876NOS3nitric oxide synthase 3 (endothelial cell)eNOS7.0(100 100 mg/kg mg kg per day 3 days IP eNOS protein was lower in ZOF rats than in lean rats
7876NOS3nitric oxide synthase 3 (endothelial cell)eNOS7.0protein was lower in ZOF rats than in lean rats eNOS expression in anti-TNF-alpha- or apocynin-treated ZOF rats was higher than
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7ACh-induced dilation was significantly blunted by 3 days treatment with TNF-alpha (10 10 microg/kg, microg kg n=5 but 3 days treatment
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.70.625 mg/kg, mg kg n=6 protected endothelial dysfunction induced by TNF-alpha in lean control rats
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7mg/kg) mg kg restored the impaired endothelial function induced by TNF-alpha in vessels isolated from lean rats (n=5) n=5 (A) A
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7lean rats vs ZOF rats # P _lt_0.05 lean rats TNF-alpha vs lean rats TNF-alpha anti-TNF- alpha # P _lt_0.05 lean
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7rats # P _lt_0.05 lean rats TNF-alpha vs lean rats TNF-alpha anti-TNF- alpha # P _lt_0.05 lean rats TNF-alpha vs lean
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7lean rats TNF-alpha anti-TNF- alpha # P _lt_0.05 lean rats TNF-alpha vs lean rats TNF-alpha apocynin.
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7alpha # P _lt_0.05 lean rats TNF-alpha vs lean rats TNF-alpha apocynin.
2577CYBAcytochrome b-245, alpha polypeptidep22-phox1.5lean control mRNA expression for NAD(P)H NAD P H oxidase p22-phox and p40-phox is higher in ZOF rats than in lean
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7ZOF rats than in lean control rats and treatment by TNF-alpha (10 10 microg/kg, microg kg 3 days IP significantly increased
2577CYBAcytochrome b-245, alpha polypeptidep22-phox1.5the mRNA expression of NAD(P)H NAD P H oxidase subunits p22-phox and p40-phox in lean rats
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7Cellular Source of TNF-alpha Expression in the Metabolic Syndrome
129ACTA1actin, alpha 1, skeletal musclealpha-actin0.3von Willebrand factor vascular smooth muscle cells (VSMCs) VSMCs ( alpha-actin or macrophages (mouse mouse anti-rat CD68 along with TNF-alpha to
1693CD68CD68 moleculeCD680.3cells (VSMCs) VSMCs ( alpha-actin or macrophages (mouse mouse anti-rat CD68 along with TNF-alpha to establish the cell type expressing the
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7( alpha-actin or macrophages (mouse mouse anti-rat CD68 along with TNF-alpha to establish the cell type expressing the TNF-alpha showed that
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7along with TNF-alpha to establish the cell type expressing the TNF-alpha showed that TNF-alpha in rat heart was localized in endothelial
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7to establish the cell type expressing the TNF-alpha showed that TNF-alpha in rat heart was localized in endothelial cells and vascular
7876NOS3nitric oxide synthase 3 (endothelial cell)eNOS7.0NO Production and Protein Expression of eNOS
7876NOS3nitric oxide synthase 3 (endothelial cell)eNOS7.0Western blotting shows the protein expression of eNOS ( Figure 4 B in isolated coronary arteries of lean
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7Role of TNF-alpha in the Metabolic Syndrome-Induced Vascular Dysfunction and the Expression of
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7We administered TNF-alpha (10 10 microg/kg microg kg per day 3 days IP
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7of microvessels to ACh to show the chronic administration of TNF-alpha in lean rats could mimic the responses of vessels from
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7We investigated whether TNF-alpha treatment increased vascular NAD(P)H NAD P H oxidase activation in
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7NAD P H oxidase activation in lean rats by administering TNF-alpha (10 10 microg/kg microg kg per day to lean rats
2577CYBAcytochrome b-245, alpha polypeptidep22-phox1.5the mRNA expression of NAD(P)H NAD P H oxidase subunits p22-phox p40-phox p47-phox p67-phox and gp-91-phox
7661NCF2neutrophil cytosolic factor 2 (65kDa, chronic granulomatous disease, autosomal 2)p67-phox1.5of NAD(P)H NAD P H oxidase subunits p22-phox p40-phox p47-phox p67-phox and gp-91-phox
2578CYBBcytochrome b-245, beta polypeptide (chronic granulomatous disease)gp-91-phox0.1NAD P H oxidase subunits p22-phox p40-phox p47-phox p67-phox and gp-91-phox
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7The results ( Figure 6 indicate that TNF-alpha plays a critical role in the oxidase stress occurring during
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha.1.7O 2 _amp_#183 production is postulated to be linked to TNF-alpha.
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha1.7Neither apocynin nor neutralizing antibodies to TNF-alpha affected baseline levels of artery fluorescence (not not shown but
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha-induced1.7(not not shown but these 2 agents markedly reduced the TNF-alpha-induced fluorescent signals for O 2 _amp_#183 separately
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0we hypothesized that impairments in coronary endothelial function in the obese condition the prediabetic metabolic syndrome is caused by tnf alpha overexpression.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0superoxide o 2 _amp_#183; generation was elevated in vessels from zof rats compared with lean rats and administration of the o 2 _amp_#183; scavenger tempol nad p h oxidase inhibitor apocynin or anti tnf alpha restored endothelium dependent dilation in the zof rats.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0real time pcr and western blotting revealed that mrna and protein of tnf alpha were higher in zof rats than that in lean rats whereas enos protein levels were reduced in the zof versus lean rats.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0immunostaining showed that tnf alpha in zof rat heart is localized in endothelial cells and vascular smooth muscle cells.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0administration of tnf alpha more than 3 days also induced expression of these nad p h subunits and abrogated endothelium dependent dilation.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0in conclusion the results demonstrate the endothelial dysfunction occurring in the metabolic syndrome is the result of effects of the inflammatory cytokine tnf alpha and subsequent production of o 2 _amp_#183; .
6081INSinsulininsulin1.0e development of the prediabetic metabolic syndrome often referred to as the metabolic syndrome that is a clustering of atherosclerotic cardiovascular risk factors characterized by visceral adiposity insulin resistance low hdl cholesterol and a systemic proinflammatory state.
6081INSinsulininsulin1.0recent evidence suggests that inflammation plays a role in the development of insulin resistance and predicts the development of type 2 diabetes mellitus.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0tumor necrosis factor tnf alpha a proinflammatory cytokine originally defined by its antitumor activity is an important mediator of many cardiovascular diseases such as myocardial ischemia reperfusion injury chronic heart failure a
11892TNFtumor necrosis factor (TNF superfamily, member 2)tumor necrosis factor1.0tumor necrosis factor tnf alpha a proinflammatory cytokine originally defined by its antitumor activity is an important mediator of many cardiovascular diseases such as myocardial ischemia reperfusion injury chronic heart
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0therefore we proposed that tnf alpha may be the inflammatory basis leading from the metabolic syndrome to the atherosclerotic disease.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0to test this we evaluated the endothelium dependent and independent vasodilation the circulating levels of tnf alpha and its expression at the wall of coronary small arteries in zucker lean rats nondiabetic with a normal body mass and zucker obese fatty zof rats.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0we also tested the mechanisms by which tnf alpha induces endothelial dysfunction and the role of o 2 _amp_#183; in small coronary arteries in the metabolic syndrome.
6554LEPRleptin receptorleptin receptor1.0the zof rats were homozygous for a missense mutation of the leptin receptor which normally controls appetite rendering it nonfunctional; thus these rats eat profusely and become obese.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0determination of plasma tnf alpha
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0plasma tnf alpha was measured using bio plex mouse 3 plex assay bio rad laboratories calif .
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0conjugate beads were added to the microplate to assess the level of tnf alpha in plasma.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0tnf alpha concentrations picograms per milliliter were automatically calculated by bio plex manager software using a standard curve derived from a recombinant cytokine standard.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0treatment with tnf alpha apocynin and tnf alpha neutralization
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0we administered tnf alpha 10 microg/kg ip r_amp_d systems to lean rats for 3 days to determine whether tnf alpha can inhibit coronary arterial dilations mediated by no.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0we also tested whether tnf alpha affected mrna expression of nad p h in lean rats.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0or apocynin 100 mg/kg ip for 3 days to lean rats for 3 days to determine whether apocynin can protect the vasodilation induced in zof rats and test whether apocynin affected the protein expression of tnf alpha and enos.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0the neutralizing antibody to tnf alpha anti tnf alpha used in these studies was 2e2 monoclonal antibody 2e2 mab 94021402 nci biological resources branch .
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0at 12 to 16 weeks of age all rats received the neutralizing anti tnf alpha 2e2 mab i.p. 0.625 mg/ml per kilogram per day 3 days ip .
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0the rationale for this dose of antibody was based on our estimates of tnf alpha expression in the low nanogram or picogram range ; the dose of antibody was able to neutralize 10 to 100 fold this amount of tnf alpha.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0 expression in the low nanogram or picogram range ; the dose of antibody was able to neutralize 10 to 100 fold this amount of tnf alpha.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0to determine whether tnf alpha was played a role in endothelial injury in the metabolic syndrome endothelial dependent and independent dilation was assessed in coronary arteries from anti tnf alpha treated rats.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0to determine the role of tnf alpha and o 2 _amp_#183; anion in altered vasoactive responses in the metabolic syndrome the above vasodilatory functions were examined in the presence of the o 2 _amp_#183; scavenger a membrane permeable
12805XDHxanthine dehydrogenasexanthine oxidase1.0the contributions of nad p h oxidase xanthine oxidase and mitochondrial respiratory chain in generating o 2 _amp_#183; were assessed by treating the vessels with the nad p h oxidase inhibitor apocynin 10 micromol/l the xanthine oxidase inhibitor allopur
12805XDHxanthine dehydrogenasexanthine oxidase1.0 and mitochondrial respiratory chain in generating o 2 _amp_#183; were assessed by treating the vessels with the nad p h oxidase inhibitor apocynin 10 micromol/l the xanthine oxidase inhibitor allopurinol 10 micromol/l or the mitochondrial respiratory chain inhibitor rotenone 1 micromol/l for 60 minute incubation separately.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0mrna expression of tnf alpha and nad p h oxidase subunits by real time pcr
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0the primers of tnf alpha and nad p h oxidase subunits p22 phox p40 phox p 47 phox p67 phox and gp 91 phox were designed primer 3 software and synthesized qiagen . cdna was amplified using qrt pcr kit with sybr green life tec
2577CYBAcytochrome b-245, alpha polypeptidep22 phox1.0the primers of tnf alpha and nad p h oxidase subunits p22 phox p40 phox p 47 phox p67 phox and gp 91 phox were designed primer 3 software and synthesized qiagen . cdna was amplified using qrt pcr kit with sybr green life technologies inc .
7661NCF2neutrophil cytosolic factor 2 (65kDa, chronic granulomatous disease, autosomal 2)p67 phox1.0the primers of tnf alpha and nad p h oxidase subunits p22 phox p40 phox p 47 phox p67 phox and gp 91 phox were designed primer 3 software and synthesized qiagen . cdna was amplified using qrt pcr kit with sybr green life technologies inc .
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0data were calculated by 2 method and presented as fold change of transcripts for tnf alpha gene and nad p h oxidase gene in zof rats normalized to gapdh compared with lean control rats defined as 1.0 fold .
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0protein expression of tnf alpha and enos by western blot analyses
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0tnf alpha and enos protein expression were detected by western blot analysis with the use of tnf alpha primary antibodies santa cruz biotechnology and enos primary antibody abcam in 4 groups of lean rats zof rats zof rats treated with anti tnf alpha 0.625 mg/ml per kilogram per day 3 days ip or zof ra
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0 primary antibodies santa cruz biotechnology and enos primary antibody abcam in 4 groups of lean rats zof rats zof rats treated with anti tnf alpha 0.625 mg/ml per kilogram per day 3 days ip or zof rats treated with apocynin 100 mg/kg per day 3 days ip .
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0formalin fixed hearts were incubated with blocking solution bsa 3% in tris buffer then incubated with polyclonal goat antibody against tnf alpha r_amp_d systems and the endothelial cell marker von willebrand factor ab6994 abcam or smooth muscle alpha actin 1a4 calbiochem or macrophages mouse anti rat cd68 serotec and then incubated with a sec
12726VWFvon Willebrand factorvon willebrand factor1.0formalin fixed hearts were incubated with blocking solution bsa 3% in tris buffer then incubated with polyclonal goat antibody against tnf alpha r_amp_d systems and the endothelial cell marker von willebrand factor ab6994 abcam or smooth muscle alpha actin 1a4 calbiochem or macrophages mouse anti rat cd68 serotec and then incubated with a secondary fluorescent antibody alexa fluor 488 and alexa fluor 568 molecu
129ACTA1actin, alpha 1, skeletal musclealpha actin1.0cking solution bsa 3% in tris buffer then incubated with polyclonal goat antibody against tnf alpha r_amp_d systems and the endothelial cell marker von willebrand factor ab6994 abcam or smooth muscle alpha actin 1a4 calbiochem or macrophages mouse anti rat cd68 serotec and then incubated with a secondary fluorescent antibody alexa fluor 488 and alexa fluor 568 molecular probe .
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0dhe fluorescence for o 2 _amp_#183; in both endothelial and smooth muscle layers of vessels was measured in lean and zof rats or zof rats with anti tnf alpha or zof rats with apocynin.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0plasma concentration mrna and protein expression of tnf alpha
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0figure 1 a shows elevations of plasma concentration of tnf alpha.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0figure 1 b real time pcr shows elevations of tnf alpha expression.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0figure 1 c western blotting shows the protein expression of tnf alpha in isolated coronary small arteries of lean control rats zof rats zof rats treated with anti tnf alpha 0.625 mg/kg per day 3 days ip or zof rats treated with apocynin 100 mg/kg per day 3 days ip .
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0our results suggest that overexpression of tnf alpha induces activation of nad p h oxidase and production of o 2 _amp_#183; leading to endothelial dysfunction in the metabolic syndrome.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0importantly our findings support the concept that tnf alpha plays a pivotal role in endothelial dysfunction in the metabolic syndrome based on the following observations.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0antibody neutralization of tnf alpha prevented coronary endothelial dysfunction and reduced o 2 _amp_#183; generation and protein expression of enos in zof rats.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0blockade of nad p h oxidase mimicked the actions of anti tnf alpha on o 2 _amp_#183; production protein expression of tnf alpha and enos and endothelial function in zof rats.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0molecular evidence indicated that the expression of tnf alpha mrna and protein and mrna expression of nad p h oxidase subunits p22 phox and p40 phox were significantly increased but protein expression of enos was diminished in zof rats.
2577CYBAcytochrome b-245, alpha polypeptidep22 phox1.0molecular evidence indicated that the expression of tnf alpha mrna and protein and mrna expression of nad p h oxidase subunits p22 phox and p40 phox were significantly increased but protein expression of enos was diminished in zof rats.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0tnf alpha and the metabolic syndrome
6081INSinsulininsulin1.0tnf alpha is overexpressed in obesity and likely mediates insulin resistance in the major animal models of obesity; neutralization of tnf alpha with soluble tnf alpha receptors results in the restoration of insulin sensitivity and thereby demonstrates that the proi
6081INSinsulininsulin1.0 resistance in the major animal models of obesity; neutralization of tnf alpha with soluble tnf alpha receptors results in the restoration of insulin sensitivity and thereby demonstrates that the proinflammatory cytokine tnf alpha is the mediator of insulin resistance.
6081INSinsulininsulin1.0 sensitivity and thereby demonstrates that the proinflammatory cytokine tnf alpha is the mediator of insulin resistance.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0tnf alpha is overexpressed in obesity and likely mediates insulin resistance in the major animal models of obesity; neutralization of tnf alpha with soluble tnf alpha receptors results in the restoration of insulin sensitivity and thereby demonstrates that the proinflammatory cytokine tnf alpha is the mediator of insulin resistance.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0 receptors results in the restoration of insulin sensitivity and thereby demonstrates that the proinflammatory cytokine tnf alpha is the mediator of insulin resistance.
6018IL6interleukin 6 (interferon, beta 2)interleukin 61.0studies in human show increased tnf alpha interleukin 6 il 6 c reactive protein crp and migration inhibitory factor mif plasma levels indicating metabolic syndrome is an inflammatory state.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0studies in human show increased tnf alpha interleukin 6 il 6 c reactive protein crp and migration inhibitory factor mif plasma levels indicating metabolic syndrome is an inflammatory state.
2367CRPC-reactive protein, pentraxin-relatedc reactive protein1.0studies in human show increased tnf alpha interleukin 6 il 6 c reactive protein crp and migration inhibitory factor mif plasma levels indicating metabolic syndrome is an inflammatory state.
6018IL6interleukin 6 (interferon, beta 2)il 61.0studies in human show increased tnf alpha interleukin 6 il 6 c reactive protein crp and migration inhibitory factor mif plasma levels indicating metabolic syndrome is an inflammatory state.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0we found increased tnf alpha mrna expression 5 fold plasma concentration of tnf alpha 8 fold and protein expression of tnf alpha more than 3 fold in small coronary arteries in zof rats.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0if tnf alpha is as we and others suspect 1 of the initiators of a cytokine cascade then it may also be 1 of the genes that is induced very quickly following perturbation.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0our immunostaining results show tnf alpha in zof rat heart is localized in ecs and vascular smooth muscle cells.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0we believe o 2 _amp_#183; production in vascular endothelial cells and smooth muscle cells by tnf alpha would limit no bioavailability and reduce no dependent dilation.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0finally tnf alpha can be "stored" within cells in a "pre" form and the enzyme tnf alpha converting enzyme can rapidly increase levels of the active cytokine.
195ADAM17ADAM metallopeptidase domain 17 (tumor necrosis factor, alpha, converting enzyme)tnf alpha converting enzyme1.0finally tnf alpha can be "stored" within cells in a "pre" form and the enzyme tnf alpha converting enzyme can rapidly increase levels of the active cytokine.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0there is no previous report on the endogenous role of tnf alpha in this respect and it has been unclear whether tnf alpha plays a direct role in endothelial dysfunction in the metabolic syndrome.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0recent evidence supports the idea that the effect of tnf alpha is no dependent by producing a rapid inhibitory action on no synthase nos in the endothelium via activation of a sphingomyelinase/ceramide signaling pathway; this mechanism is supposed to mediate the
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0ndent by producing a rapid inhibitory action on no synthase nos in the endothelium via activation of a sphingomyelinase/ceramide signaling pathway; this mechanism is supposed to mediate the action of tnf alpha thereby contributing to vascular endothelial dysfunction in coronary circulation under different pathological conditions with increased cytokines.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0in the present study we documented that tnf alpha is critical for the development of endothelial dysfunction in the model of the metabolic syndrome.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0tnf alpha expression was significantly increased in zof rats; anti tnf alpha restored no mediated coronary arterial dilation in zof rats but did not affect the endothelium dependent vasodilation in lean controls.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0furthermore administration of anti tnf alpha protected endothelial dysfunction induced by tnf alpha in isolated vessels from lean control rats confirming that the monoclonal anti tnf alpha was specific.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0impaired endothelium dependent vasodilation was restored in zof rats after the treatment with tnf alpha antibodies for 3 days ip and 3 days treatment with tnf alpha ip mimicked endothelial dysfunction in lean rats both demonstrating the pivotal role of this inflammatory cytokine in the vascular pathology of the metabolic syndrome.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0this result is in agreement with those of previous studies showing that tnf alpha can decrease the release of endothelial no and induce impairment of endothelium dependent relaxation in a variety of vascular beds.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0anti tnf alpha or apocynin attenuated the production of o 2 _amp_#183; in zof rats thereby confirming the critical role of o 2 _amp_#183; in the endothelial dysfunction occurring in the metabolic syndrome.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0the link between tnf alpha overexpression and o 2 _amp_#183; production has been investigated by zhang et al who found that tiron a cell permeable o 2 _amp_#183; scavenger and polyethylene glycol conjugated superoxide dismutas
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0o 2 _amp_#183; production has been investigated by zhang et al who found that tiron a cell permeable o 2 _amp_#183; scavenger and polyethylene glycol conjugated superoxide dismutase peg sod prevented tnf alpha induced impairment of endothelium dependent vasorelaxation in coronary arterioles.
11179SOD1superoxide dismutase 1, soluble (amyotrophic lateral sclerosis 1 (adult))superoxide dismutase1.0k between tnf alpha overexpression and o 2 _amp_#183; production has been investigated by zhang et al who found that tiron a cell permeable o 2 _amp_#183; scavenger and polyethylene glycol conjugated superoxide dismutase peg sod prevented tnf alpha induced impairment of endothelium dependent vasorelaxation in coronary arterioles.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0our results are consistent with these studies and support our hypotheses that tnf alpha and o 2 _amp_#183; are connected in the production of oxidative stress and endothelial dysfunction in the metabolic syndrome.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0effect of enos on tnf alpha induced endothelial dysfunction in the metabolic syndrome
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0the vascular endothelium is a major target for the actions of tnf alpha.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0tnf alpha can decrease the release of endothelial no and induce impairment of endothelium dependent vasodilation in a variety of vascular beds ; however the signaling pathways that couple tnf alpha stimulation to endothelial dysfunction in small coronary arteries remain to be understood.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0zhang et al demonstrated that tnf alpha inhibited no mediated endothelium dependent vasorelaxation in coronary arterioles by activating sphingomyelinase and enhancing o 2 _amp_#183; generation in coronary endothelial cells.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0in the presence of l nmma tnf alpha had no further inhibitory effect on the responses to endothelium dependent vasodilators suggesting that the effect of tnf alpha is no dependent.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0tnf alpha is known to affect enos expression by affecting the half life of its mrna.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0we know that tnf alpha impairs endothelial function by reducing no bioavailability but little information is available in the literature on how tnf alpha affects endothelial nos enos activity in coronary arteries.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0ugh there are multiple intracellular sources for formation of oxygen free radicals eg mitochondria xanthine oxidase nad[p]h oxidase etc our results support the idea that the major enzyme activated by tnf alpha in the metabolic syndrome is nad p h oxidase.
12805XDHxanthine dehydrogenasexanthine oxidase1.0although there are multiple intracellular sources for formation of oxygen free radicals eg mitochondria xanthine oxidase nad[p]h oxidase etc our results support the idea that the major enzyme activated by tnf alpha in the metabolic syndrome is nad p h oxidase.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0our results indicate that the pathway for tnf alpha induced endothelial dysfunction is mediated by activation of nad p h oxidase and the subsequent production of o 2 _amp_#183; .
12805XDHxanthine dehydrogenasexanthine oxidase1.0to the contrary we did not find any improvement in endothelial function after incubation with rotenone and allopurinol suggesting that mitochondria and the xanthine oxidase system are not likely to be the source of o 2 _amp_#183; production.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0our results demonstrate the production of tnf alpha is essential in eliciting this oxidative stress.
7661NCF2neutrophil cytosolic factor 2 (65kDa, chronic granulomatous disease, autosomal 2)p67 phox1.0guzik et al reported that the protein expression of nad p h oxidase subunits p22 p47 and p67 phox are significantly increased in diabetic human tissue versus normal control.
2577CYBAcytochrome b-245, alpha polypeptidep22 phox1.0our real time pcr results indicate that mrna expression of nad p h oxidase subunit p22 phox and p40 phox are increased _amp_2 fold in zof rats versus lean rats.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0most interestingly the tnf alpha treatment also increases the mrna expression of vascular nad p h oxidase subunits p22 phox and p40 phox in the control animals.
2577CYBAcytochrome b-245, alpha polypeptidep22 phox1.0most interestingly the tnf alpha treatment also increases the mrna expression of vascular nad p h oxidase subunits p22 phox and p40 phox in the control animals.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0further studies are needed to determine the mechanism linking tnf alpha receptor activation to nad p h oxidase.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0the present study indicates that the model of the metabolic syndrome increases tnf alpha which stimulates endothelial generation of through activation of nad p h oxidase in the endothelium and contributes to the endothelial dysfunction.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0to our knowledge this is the first functional study to link the mechanism s of the model of the metabolic syndrome_amp_#151;in terms of endothelial dysfunction_amp_#151;to tnf alpha the subsequent activation of nad p h oxidase and thus the production of in coronary artery endothelium.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0taken together these results further support our hypothesis that tnf alpha and o 2 _amp_#183; are connected in the production of oxidative stress and endothelial dysfunction in the metabolic syndrome.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0in conclusion we found that tnf alpha overexpression impairs endothelium dependent vasodilation in coronary arterioles of rats affected by the model of the metabolic syndrome.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0the impaired endothelial function can be restored toward normal by administration of tnf alpha antibodies.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0the mechanism by which tnf alpha affects endothelial function seems to be an increased superoxide production by nad p h oxidases which in turn leads to a reduced no bioactivity by direct scavenging.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0these findings may provide further insight into a novel therapeutic target for cardiovascular diseases associated with elevated levels of tnf alpha.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0a plasma concentration of inflammatory cytokine tnf alpha is significantly increased in zof rats.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0b real time pcr of tnf alpha mrna from left ventricular coronary arteries in lean control and zof rats.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0b shows fold change of tnf alpha mrna expression which was significantly higher in zof rats than in lean controls.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0c western blotting showed the protein expression of tnf alpha normalized to _amp_#223; actin in isolated small coronary arteries in lean control and zof rats.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0bars represent the increased expression of tnf alpha in zof rats as a percentage of control.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0the protein expression of tnf alpha was higher in coronary arteries of zof rats than in lean controls but tnf alpha expression in anti tnf alpha or apocynin treated zof rats was similar to lean control rats.
143ACTC1actin, alpha, cardiac muscle 1smooth muscle actin1.0dual fluorescence combining tnf alpha with markers for macrophages cd68 vascular smooth muscle alpha smooth muscle actin [ alpha sma] or endothelial cells von willebrand factor [vwf] using specific antibodies followed by a fluorescent labeled secondary antibody.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0dual fluorescence combining tnf alpha with markers for macrophages cd68 vascular smooth muscle alpha smooth muscle actin [ alpha sma] or endothelial cells von willebrand factor [vwf] using specific antibodies followed by a fluorescent la
12726VWFvon Willebrand factorvon willebrand factor1.0dual fluorescence combining tnf alpha with markers for macrophages cd68 vascular smooth muscle alpha smooth muscle actin [ alpha sma] or endothelial cells von willebrand factor [vwf] using specific antibodies followed by a fluorescent labeled secondary antibody.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0a through c dual labeling of alpha sma green and tnf alpha red in lean rat heart tissue.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0e through g dual labeling of alpha sma green and tnf alpha red in zof rat heart tissue.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0the insets d and h show a colocalization of tnf alpha red and alpha sma green .
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0i through k dual labeling of endothelial cells red and tnf alpha green in zof rat heart tissues.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0the inset l shows a colocalization of tnf alpha green and vwf factor red in zof rat heart tissues.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0m through o dual labeling of cd68 red and tnf alpha green in zof rat heart tissue; the arrow in o and inset p show a specific macrophage staining and absence of tnf alpha staining.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0the immunostaining results show that tnf alpha in zof rat heart is expressed in vascular smooth muscle and endothelial cells.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0b protein expression of enos in isolated coronary arteries of lean control zof zof rats treated with anti tnf alpha 0.625 mg/kg per day 3 days ip or zof treated with apocynin 100 mg/kg per day 3 days ip . enos protein was lower in zof rats than in lean rats. enos expression in anti tnf alpha or apocynin treated zo
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0 0.625 mg/kg per day 3 days ip or zof treated with apocynin 100 mg/kg per day 3 days ip . enos protein was lower in zof rats than in lean rats. enos expression in anti tnf alpha or apocynin treated zof rats was higher than in zof rats but lower compared with that in lean controls n=5 . * p _lt_0.05 vs lean rats; # p _lt_0.05 vs zof rats.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0ach induced dilation was significantly blunted by 3 days treatment with tnf alpha 10 microg/kg n=5 but 3 days treatment of anti tnf alpha 0.625 mg/kg n=6 protected endothelial dysfunction induced by tnf alpha in lean control rats.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0three days of treatment with the nad p h oxidase inhibitor apocynin 100 mg/kg restored the impaired endothelial function induced by tnf alpha in vessels isolated from lean rats n=5 a .
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0anti tnf alpha restored no mediated coronary arterial dilation in zof rats but did not affect the vasodilation in lean control rats b .
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0flow dependent dilation in zof rats was also decreased relative to lean controls c . * p _lt_0.05 lean rats vs zof rats; # p _lt_0.05 lean rats+tnf alpha vs lean rats+tnf alpha+anti tnf alpha; # p _lt_0.05 lean rats+tnf alpha vs lean rats+tnf alpha+apocynin.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0; # p _lt_0.05 lean rats+tnf alpha vs lean rats+tnf alpha+apocynin.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0esent the increased expression in zof rats as a fold change of lean control. mrna expression for nad p h oxidase p22 phox and p40 phox is higher in zof rats than in lean control rats and treatment by tnf alpha 10 microg/kg 3 days ip significantly increased the mrna expression of nad p h oxidase subunits p22 phox and p40 phox in lean rats.
2577CYBAcytochrome b-245, alpha polypeptidep22 phox1.0bars represent the increased expression in zof rats as a fold change of lean control. mrna expression for nad p h oxidase p22 phox and p40 phox is higher in zof rats than in lean control rats and treatment by tnf alpha 10 microg/kg 3 days ip significantly increased the mrna expression of nad p h oxidase subunits p22 phox and p40
2577CYBAcytochrome b-245, alpha polypeptidep22 phox1.0 and p40 phox is higher in zof rats than in lean control rats and treatment by tnf alpha 10 microg/kg 3 days ip significantly increased the mrna expression of nad p h oxidase subunits p22 phox and p40 phox in lean rats.
12805XDHxanthine dehydrogenasexanthine oxidase1.0incubation of coronary arteries with the o 2 _amp_#183; scavenger tempol 1 mmol/l n=7 a or the nad p h oxidase inhibitor apocynin 10 micromol/l n=8 b restored vasodilation in zof rats but the xanthine oxidase inhibitor allopurinol 10 micromol/l n=5 or oxypurinol 100 micromol/l n=4 or the mitochondrial respiratory chain inhibitor rotenone 1 micromol/l n=4 did not data not shown .
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0both anti tnf alpha and apocynin significantly reduced the fluorescent signals in zof rats.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0however neither apocynin nor anti tnf alpha markedly reduced the fluorescent signals n=4 .
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0administration of anti tnf alpha or apocynin reduced the production of o 2 _amp_#183; to the level observed in the lean controls. n=6 b . * p _lt_0.05 vs lean rats; # p _lt_0.05 vs zof rats.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0cellular source of tnf alpha expression in the metabolic syndrome
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0markers for endothelial cells ecs von willebrand factor vascular smooth muscle cells vsmcs alpha actin or macrophages mouse anti rat cd68 along with tnf alpha to establish the cell type expressing the tnf alpha showed that tnf alpha in rat heart was localized in endothelial cells and vascular smooth muscle cells figure 2 .
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0 to establish the cell type expressing the tnf alpha showed that tnf alpha in rat heart was localized in endothelial cells and vascular smooth muscle cells figure 2 .
12726VWFvon Willebrand factorvon willebrand factor1.0markers for endothelial cells ecs von willebrand factor vascular smooth muscle cells vsmcs alpha actin or macrophages mouse anti rat cd68 along with tnf alpha to establish the cell type expressing the tnf alpha showed that tnf alpha in rat heart was local
129ACTA1actin, alpha 1, skeletal musclealpha actin1.0markers for endothelial cells ecs von willebrand factor vascular smooth muscle cells vsmcs alpha actin or macrophages mouse anti rat cd68 along with tnf alpha to establish the cell type expressing the tnf alpha showed that tnf alpha in rat heart was localized in endothelial cells and vascular smooth m
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0western blotting shows the protein expression of enos figure 4 b in isolated coronary arteries of lean control zof rats zof rats treated with anti tnf alpha 0.625 mg/kg per day 3 days ip or zof rats treated with the nad p h oxidase inhibitor apocynin 100 mg/kg per day 3 days ip .
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0role of tnf alpha in the metabolic syndrome induced vascular dysfunction and the expression of nad p h oxidase
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0we administered tnf alpha 10 microg/kg per day 3 days ip and assessed responses of microvessels to ach to show the chronic administration of tnf alpha in lean rats could mimic the responses of vessels from zof rats figure 5 a .
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0we also found that administration of anti tnf alpha 2e2 monoclonal antibody restored endothelial function in zof rats figure 5 b .
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0we investigated whether tnf alpha treatment increased vascular nad p h oxidase activation in lean rats by administering tnf alpha 10 microg/kg per day to lean rats for 3 days and evaluating the mrna expression of nad p h oxidase subunits p22 phox p40 phox p47 phox p67 phox and gp 91 phox.
2577CYBAcytochrome b-245, alpha polypeptidep22 phox1.0tment increased vascular nad p h oxidase activation in lean rats by administering tnf alpha 10 microg/kg per day to lean rats for 3 days and evaluating the mrna expression of nad p h oxidase subunits p22 phox p40 phox p47 phox p67 phox and gp 91 phox.
7661NCF2neutrophil cytosolic factor 2 (65kDa, chronic granulomatous disease, autosomal 2)p67 phox1.0d p h oxidase activation in lean rats by administering tnf alpha 10 microg/kg per day to lean rats for 3 days and evaluating the mrna expression of nad p h oxidase subunits p22 phox p40 phox p47 phox p67 phox and gp 91 phox.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0the results figure 6 indicate that tnf alpha plays a critical role in the oxidase stress occurring during the metabolic syndrome by inducing expression of nad p h oxidase.
12805XDHxanthine dehydrogenasexanthine oxidase1.0roles of superoxide xanthine oxidase mitochondrial respiratory chain and nad p h oxidase in the metabolic syndrome induced vascular dysfunction
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0o 2 _amp_#183; production is postulated to be linked to tnf alpha.
12805XDHxanthine dehydrogenasexanthine oxidase1.0to establish the pathway for o 2 _amp_#183; production we administered the nad p h oxidase inhibitor apocynin 10 micromol/l the xanthine oxidase inhibitor allopurinol 10 micromol/l or the mitochondrial respiratory chain inhibitor rotenone 1 micromol/l to determine whether vasodilation to ach would be restored in zof rats figure 7 .
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0neither apocynin nor neutralizing antibodies to tnf alpha affected baseline levels of artery fluorescence not shown but these 2 agents markedly reduced the tnf alpha induced fluorescent signals for o 2 _amp_#183; separately.