Document Information


PMID 12874435  (  )
Title ROS generation by nonphagocytic NADPH oxidase: potential relevance in diabetic nephropathy.
Abstract Oxidative stress has emerged as an important pathogenic factor in the development of long-term complications, such as atherosclerosis and nephropathy, in patients with diabetes. Whereas multiple enzymes and processes can contribute to oxidative stress, recent studies indicate that a multicomponent phagocyte-type NADPH oxidase is a major source of reactive oxygen species (ROS) production in many nonphagocytic cells, including fibroblasts, vascular smooth muscle cells, endothelial cells, renal mesangial cells, and tubular cells. Under physiologic conditions, nonphagocytic NADPH oxidases have very low-level constitutive activity. However, enzyme activity can be upregulated both acutely and chronically in response to stimuli such as growth factors, cytokines, high glucose, and hyperlipidemia. ROS production by the oxidase may serve a signaling role or may lead to oxidative damage. This article reviews current knowledge of the nonphagocyte-NADPH oxidases at both structural and biochemical levels and discusses the possible role of these enzymes in the pathophysiology of diabetic nephropathy. King's College London, London, United Kingdom. jian-mei.li@kcl.ac.uk

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Targets by SciMiner Summary

HUGO ID Symbol Target Name #Occur ActualStr
14874NOX5NADPH oxidase, EF-hand calcium binding domain 561nadph oxidase |
7660NCF1neutrophil cytosolic factor 1, (chronic granulomatous disease, autosomal 1)17p47 protein |
333AGTangiotensinogen (serpin peptidase inhibitor, clade A, member 8)14angiotensin ii | ang ii | Ang |
9801RAC1ras-related C3 botulinum toxin substrate 1 (rho family, small GTP binding protein Rac1)11rac1 | rac1-induced |
11892TNFtumor necrosis factor (TNF superfamily, member 2)10TNF-alpha. | tnf alpha |
6871MAPK1mitogen-activated protein kinase 17p40 | MAPK |
7427MT-CYBmitochondrially encoded cytochrome b6cytochrome b |
7891NOX4NADPH oxidase 46Nox4 | Renox |
7889NOX1NADPH oxidase 15mitogenic oxidase | Mox-1 | gp91 2 | Nox1 |
2577CYBAcytochrome b-245, alpha polypeptide5p22 |
7661NCF2neutrophil cytosolic factor 2 (65kDa, chronic granulomatous disease, autosomal 2)3chronic granulomatous disease | p67 |
3415EPOerythropoietin2erythropoietin |
391AKT1v-akt murine thymoma viral oncogene homolog 12rac |
8799PDGFAplatelet-derived growth factor alpha polypeptide2PDGF | PDGF-induced |
2578CYBBcytochrome b-245, beta polypeptide (chronic granulomatous disease)1Nox2 |
6081INSinsulin1insulin |
12680VEGFAvascular endothelial growth factor A1vascular endothelial growth factor |
1516CATcatalase1catalase |
1784CDKN1Acyclin-dependent kinase inhibitor 1A (p21, Cip1)1p21 |
7890NOX3NADPH oxidase 31Nox3 |

 


Targets by SciMiner Full list

HUGO ID Symbol Name ActualStr Score FlankingText
7660NCF1neutrophil cytosolic factor 1, (chronic granulomatous disease, autosomal 1)p471.1one gp91 subunit and at least four cytosolic subunits (p47 p47 p67 p40 and the small GTPase rac 1 or rac
6871MAPK1mitogen-activated protein kinase 1p401.7subunit and at least four cytosolic subunits (p47 p47 p67 p40 and the small GTPase rac 1 or rac 2 (
2577CYBAcytochrome b-245, alpha polypeptidep220.0It comprises a membrane-associated cytochrome b 558 composed of one p22 (where where phox stands for phagocyte oxidase and one gp91
7661NCF2neutrophil cytosolic factor 2 (65kDa, chronic granulomatous disease, autosomal 2)p670.2gp91 subunit and at least four cytosolic subunits (p47 p47 p67 p40 and the small GTPase rac 1 or rac 2
391AKT1v-akt murine thymoma viral oncogene homolog 1rac0.0cytosolic subunits (p47 p47 p67 p40 and the small GTPase rac 1 or rac 2 ( 1
391AKT1v-akt murine thymoma viral oncogene homolog 1rac0.0p47 p67 p40 and the small GTPase rac 1 or rac 2 ( 1
7660NCF1neutrophil cytosolic factor 1, (chronic granulomatous disease, autosomal 1)p471.1For example both types of oxidase express p22 p47 and rac1 subunits
9801RAC1ras-related C3 botulinum toxin substrate 1 (rho family, small GTP binding protein Rac1)rac10.5For example both types of oxidase express p22 p47 and rac1 subunits
2577CYBAcytochrome b-245, alpha polypeptidep220.1For example both types of oxidase express p22 p47 and rac1 subunits
2578CYBBcytochrome b-245, beta polypeptide (chronic granulomatous disease)Nox21.3Using this new terminology Nox2 represents the neutrophil gp91 ( Table 1 gp91 is also
7889NOX1NADPH oxidase 1Nox10.9The first homologue of gp91 namely Nox1 was found to have significant pro-proliferative activity and is also
7889NOX1NADPH oxidase 1Mox-10.9also therefore known by the alternative term mitogenic oxidase or Mox-1
7889NOX1NADPH oxidase 1Nox10.9Nox1 shares 56% sequence homology with neutrophil gp91 ( 2 12
7890NOX3NADPH oxidase 3Nox30.9Nox3 is known only from its genomic sequence ( 11
7891NOX4NADPH oxidase 4Nox42.4A homologue of gp91 termed Nox4 (or or Renox has been cloned in the kidney
7891NOX4NADPH oxidase 4Renox1.9A homologue of gp91 termed Nox4 (or or Renox has been cloned in the kidney
7891NOX4NADPH oxidase 4Nox42.4The predicted Nox4 protein consists of 578 amino acids with 39% homology to
7891NOX4NADPH oxidase 4Nox42.4Nox4 expression was found to be abundant in human distal tubular
7891NOX4NADPH oxidase 4Nox42.4Nox4 was also found abundantly expressed in fetal kidney an organ
2577CYBAcytochrome b-245, alpha polypeptidep220.0it is generally accepted that the majority of the gp91 -p22 heterodimer is located on the plasma membrane whereas other regulatory
7660NCF1neutrophil cytosolic factor 1, (chronic granulomatous disease, autosomal 1)p471.1Upon neutrophil activation the cytosolic components p47 p67 p40 and rac1 translocate to the membrane and associate
6871MAPK1mitogen-activated protein kinase 1p401.7Upon neutrophil activation the cytosolic components p47 p67 p40 and rac1 translocate to the membrane and associate with the
9801RAC1ras-related C3 botulinum toxin substrate 1 (rho family, small GTP binding protein Rac1)rac10.5Upon neutrophil activation the cytosolic components p47 p67 p40 and rac1 translocate to the membrane and associate with the cytochrome to
7661NCF2neutrophil cytosolic factor 2 (65kDa, chronic granulomatous disease, autosomal 2)p670.2Upon neutrophil activation the cytosolic components p47 p67 p40 and rac1 translocate to the membrane and associate with
7660NCF1neutrophil cytosolic factor 1, (chronic granulomatous disease, autosomal 1)p471.1Several studies have shown a crucial role of the p47 subunit in agonist-induced (angiotensin angiotensin II Ang II PMA TNF-alpha
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha0.5p47 subunit in agonist-induced (angiotensin angiotensin II Ang II PMA TNF-alpha growth factors and thrombin vascular cell NADPH oxidase activation (
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha0.5endothelial cells isolated from wild-type mice respond to PMA and TNF-alpha with a significant increase in O 2 generation
7660NCF1neutrophil cytosolic factor 1, (chronic granulomatous disease, autosomal 1)p471.1This response was completely lost in cells isolated from p47 knockout mice
7660NCF1neutrophil cytosolic factor 1, (chronic granulomatous disease, autosomal 1)p471.1Transfection of the full-length p47 cDNA into p47 coronary microvascular endothelial cells (CMEC) CMEC caused
7660NCF1neutrophil cytosolic factor 1, (chronic granulomatous disease, autosomal 1)p471.1Transfection of the full-length p47 cDNA into p47 coronary microvascular endothelial cells (CMEC) CMEC caused expression of p47
7660NCF1neutrophil cytosolic factor 1, (chronic granulomatous disease, autosomal 1)p471.1p47 coronary microvascular endothelial cells (CMEC) CMEC caused expression of p47 protein and restoration of the ROS response to PMA and
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha.0.5protein and restoration of the ROS response to PMA and TNF-alpha.
7660NCF1neutrophil cytosolic factor 1, (chronic granulomatous disease, autosomal 1)p471.1In wild-type CMEC transfection of antisense p47 cDNA substantially reduced p47 expression and caused loss of the
7660NCF1neutrophil cytosolic factor 1, (chronic granulomatous disease, autosomal 1)p471.1In wild-type CMEC transfection of antisense p47 cDNA substantially reduced p47 expression and caused loss of the ROS response to PMA
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha0.5and caused loss of the ROS response to PMA and TNF-alpha ( 18
7660NCF1neutrophil cytosolic factor 1, (chronic granulomatous disease, autosomal 1)p471.1It is widely known that p47 phosphorylation plays a pivotal role in neutrophil NADPH oxidase activation
7660NCF1neutrophil cytosolic factor 1, (chronic granulomatous disease, autosomal 1)p471.1of activation of NADPH oxidase correspond to the kinetics of p47 phosphorylation ( 25 26
7660NCF1neutrophil cytosolic factor 1, (chronic granulomatous disease, autosomal 1)p471.1It is possible that phosphorylation of p47 may also play a role in agonist-induced upregulation of nonphagocytic
9801RAC1ras-related C3 botulinum toxin substrate 1 (rho family, small GTP binding protein Rac1)rac10.5that has been well studied in nonphagocytes is the GTPase rac1 which binds to p67 and activates NADPH oxidase in its
9801RAC1ras-related C3 botulinum toxin substrate 1 (rho family, small GTP binding protein Rac1)rac10.5In endothelial cells dominant-negative rac1 abrogates both basal ( 29 and shear stress-induced NADPH oxidase-dependent
9801RAC1ras-related C3 botulinum toxin substrate 1 (rho family, small GTP binding protein Rac1)rac10.5threshold level of NADPH oxidase-generated ROS which was regulated by rac1
8799PDGFAplatelet-derived growth factor alpha polypeptidePDGF-induced0.3( 32 reported that PDGF-induced cell cycle activation in airway smooth muscle cells was NADPH
9801RAC1ras-related C3 botulinum toxin substrate 1 (rho family, small GTP binding protein Rac1)rac10.5oxidase dependent and was inhibited by a dominant-negative allele of rac1
9801RAC1ras-related C3 botulinum toxin substrate 1 (rho family, small GTP binding protein Rac1)rac10.5aortic endothelial cells was connected to a feedback loop whereby rac1 protein turnover was accelerated via increased degradation of rac1 by
9801RAC1ras-related C3 botulinum toxin substrate 1 (rho family, small GTP binding protein Rac1)rac10.5whereby rac1 protein turnover was accelerated via increased degradation of rac1 by the proteasome and was strongly dependent on the redox
9801RAC1ras-related C3 botulinum toxin substrate 1 (rho family, small GTP binding protein Rac1)rac1-induced0.0( 33 showed that rac1-induced O 2 production in human aortic endothelial cells was connected
9801RAC1ras-related C3 botulinum toxin substrate 1 (rho family, small GTP binding protein Rac1)rac10.5as H 2 O 2 promote the degradation of ubiquitinated rac1 whereas inhibitors of NADPH oxidase such as diphenyleneiodonium block the
9801RAC1ras-related C3 botulinum toxin substrate 1 (rho family, small GTP binding protein Rac1)rac10.5NADPH oxidase such as diphenyleneiodonium block the degradation of ubiquitinated rac1 by the proteasome ( 33
1784CDKN1Acyclin-dependent kinase inhibitor 1A (p21, Cip1)p211.4sensitive including the transcriptional factor NF-kB the small G protein p21 (Ras), Ras and Src ( 8 36 37
8799PDGFAplatelet-derived growth factor alpha polypeptidePDGF0.3transduction in response to several cytokines e.g Ang II thrombin PDGF TNF-alpha.
11892TNFtumor necrosis factor (TNF superfamily, member 2)TNF-alpha.0.5in response to several cytokines e.g Ang II thrombin PDGF TNF-alpha.
6871MAPK1mitogen-activated protein kinase 1MAPK1.7Several members of the mitogen-activated protein kinase (MAPK) MAPK family are redox sensitive
6871MAPK1mitogen-activated protein kinase 1MAPK1.7Ang II-induced MAPK activation in vascular cells requires NADPH oxidase-derived ROS because Ang
6871MAPK1mitogen-activated protein kinase 1MAPK1.7NADPH oxidase-derived ROS because Ang II was unable to activate MAPK in aortas from p47 knockout mice ( 23
7660NCF1neutrophil cytosolic factor 1, (chronic granulomatous disease, autosomal 1)p471.1Ang II was unable to activate MAPK in aortas from p47 knockout mice ( 23
333AGTangiotensinogen (serpin peptidase inhibitor, clade A, member 8)Ang0.1Ang II-induced MAPK activation in vascular cells requires NADPH oxidase-derived ROS
333AGTangiotensinogen (serpin peptidase inhibitor, clade A, member 8)Ang0.1MAPK activation in vascular cells requires NADPH oxidase-derived ROS because Ang II was unable to activate MAPK in aortas from p47
6871MAPK1mitogen-activated protein kinase 1MAPK1.7Similarly in cultured VSMC Ang II-induced MAPK activation could be inhibited by antisense oligonucleotides or an antibody
333AGTangiotensinogen (serpin peptidase inhibitor, clade A, member 8)Ang0.1Similarly in cultured VSMC Ang II-induced MAPK activation could be inhibited by antisense oligonucleotides or
2577CYBAcytochrome b-245, alpha polypeptidep220.0could be inhibited by antisense oligonucleotides or an antibody against p22 implicating a role of NADPH oxidase-derived ROS ( 40
6871MAPK1mitogen-activated protein kinase 1MAPK1.7found a good correlation between NADPH oxidase-derived ROS production and MAPK activation during the development of cardiac hypertrophy ( 41
7660NCF1neutrophil cytosolic factor 1, (chronic granulomatous disease, autosomal 1)p471.1The expression of p22 p47 and p67 has been reported in renal mesangial cells (
7891NOX4NADPH oxidase 4Nox42.4has been reported in renal mesangial cells ( 5 and Nox4 was cloned from the kidney and found highly expressed in
2577CYBAcytochrome b-245, alpha polypeptidep220.1The expression of p22 p47 and p67 has been reported in renal mesangial cells
7660NCF1neutrophil cytosolic factor 1, (chronic granulomatous disease, autosomal 1)p471.1in a rat model of diabetic nephropathy upregulation of the p47 subunit of NADPH oxidase and an increase in ROS production
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0whereas multiple enzymes and processes can contribute to oxidative stress recent studies indicate that a multicomponent phagocyte type nadph oxidase is a major source of reactive oxygen species ros production in many nonphagocytic cells including fibroblasts vascular smooth muscle cells endothelial cells renal mesangial cells and tubular cells.
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0the nadph oxidase was originally discovered in neutrophils where it is a potent source of millimolar quantities of superoxide o 2 during phagocytosis and plays a vital role in nonspecific host defense 1 .
7427MT-CYBmitochondrially encoded cytochrome bcytochrome b1.0it comprises a membrane associated cytochrome b 558 composed of one p22 where phox stands for phagocyte oxidase and one gp91 subunit and at least four cytosolic subunits p47 p67 p40 and the small gtpase rac 1 or rac 2 1 .
7427MT-CYBmitochondrially encoded cytochrome bcytochrome b1.0is normally dormant in resting neutrophils but is rapidly activated upon appropriate stimulation in a process involving the translocation and association of cytosolic subunits with the membrane bound cytochrome b 558 .
7661NCF2neutrophil cytosolic factor 2 (65kDa, chronic granulomatous disease, autosomal 2)chronic granulomatous disease1.0mutations in essential components of the oxidase lead to the condition of chronic granulomatous disease which is characterized by recurrent life threatening infections.
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0nphagocytic cells such as fibroblasts; endothelial cells; vascular smooth muscle cells vsmc ; and renal mesangial tubular and other cells also possess o 2 producing enzymes analogous to the phagocyte nadph oxidase 2 7 .
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0the low amounts of ros produced by nonphagocytic nadph oxidase may function as second messengers to influence redox sensitive signal transduction pathways referred to as redox signaling .
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0potential role of nonphagocytic nadph oxidase in the pathogenesis of diabetic nephropathy.
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0various factors are involved in the activation of nadph oxidase and ros production.
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0gp91 is the beta subunit of cytochrome b 558 and is the key catalytic subunit of the nadph oxidase.
7427MT-CYBmitochondrially encoded cytochrome bcytochrome b1.0gp91 is the beta subunit of cytochrome b 558 and is the key catalytic subunit of the nadph oxidase.
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0several homologues of gp91 termed nox for nadph oxidase have recently been reported to be expressed in nonphagocytic cells 11 .
7889NOX1NADPH oxidase 1mitogenic oxidase1.0the first homologue of gp91 namely nox1 was found to have significant pro proliferative activity and is also therefore known by the alternative term mitogenic oxidase or mox 1.
7889NOX1NADPH oxidase 1gp91 21.0nox1 shares 56% sequence homology with neutrophil gp91 2 12 .
3415EPOerythropoietinerythropoietin1.0nox4 expression was found to be abundant in human distal tubular cells and suggested to function as an oxygen sensor for erythropoietin synthesis 6 13 .
3415EPOerythropoietinerythropoietin1.0nox4 was also found abundantly expressed in fetal kidney an organ that is not considered to produce highly erythropoietin; it might be involved in the regulation of renal cell growth and death 6 .
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0subcellular location and assembly of the nonphagocytic nadph oxidase
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0on the basis of the above information it was assumed that in unstimulated nonphagocytic cells the nadph oxidase would also comprise a predominantly plasma membrane bound cytochrome b 558 with the other units present in the cytosol.
7427MT-CYBmitochondrially encoded cytochrome bcytochrome b1.0on the basis of the above information it was assumed that in unstimulated nonphagocytic cells the nadph oxidase would also comprise a predominantly plasma membrane bound cytochrome b 558 with the other units present in the cytosol.
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0y using a range of complementary methods including confocal microscopy plasma membrane protein biotinylation subcellular fractionation and co immunoprecipitation we showed that 1 the vast majority of nadph oxidase subunit expression and functional activity in endothelial cells is intracellular rather than plasma membrane bound; 2 a significant proportion of the nadph oxidase subunits in unstimulated cells are
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0 subunit expression and functional activity in endothelial cells is intracellular rather than plasma membrane bound; 2 a significant proportion of the nadph oxidase subunits in unstimulated cells are present as fully preassembled and functional ros generating complexes; and 3 the functional oxidase is associated with the intracellular cytoskeleton particularly i
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0because the association of "cytosolic" subunits with cytochrome b 558 is thought to initiate oxidase activity the finding of seemingly preassembled nadph oxidase complexes in endothelial cells is likely to account for the low level ros generating activity observed in unstimulated nonproliferating cells 14 15 .
7427MT-CYBmitochondrially encoded cytochrome bcytochrome b1.0because the association of "cytosolic" subunits with cytochrome b 558 is thought to initiate oxidase activity the finding of seemingly preassembled nadph oxidase complexes in endothelial cells is likely to account for the low level ros generating activity observed
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0the interaction between the cytoskeleton and oxidase components may play an important role in localizing and stabilizing the nadph oxidase complex.
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0although the structure of the nadph oxidase in other nonphagocytic cells has not yet been reported it seems likely that it will be similar.
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0agonist induced nadph oxidase activation
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0one of the particular attributes of the nonphagocyte nadph oxidase is that the oxidase not only is "constitutively" active but also responds to hormones growth factors cytokines and mechanical stress 2 8 16 20 .
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0precise mechanisms underlying agonist induced nonphagocyte nadph oxidase activation are not yet understood but it is clear that both acute protein modification and chronic changes in expression levels may be involved.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0several studies have shown a crucial role of the p47 subunit in agonist induced angiotensin ii [ang ii] pma tnf alpha growth factors and thrombin vascular cell nadph oxidase activation 18 21 23 and in the development of atherosclerotic lesions in apoe / mice 24 .
333AGTangiotensinogen (serpin peptidase inhibitor, clade A, member 8)ang ii1.0several studies have shown a crucial role of the p47 subunit in agonist induced angiotensin ii [ang ii] pma tnf alpha growth factors and thrombin vascular cell nadph oxidase activation 18 21 23 and in the development of atherosclerotic lesions in apoe / mice 24 .
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0several studies have shown a crucial role of the p47 subunit in agonist induced angiotensin ii [ang ii] pma tnf alpha growth factors and thrombin vascular cell nadph oxidase activation 18 21 23 and in the development of atherosclerotic lesions in apoe / mice 24 .
333AGTangiotensinogen (serpin peptidase inhibitor, clade A, member 8)angiotensin ii1.0several studies have shown a crucial role of the p47 subunit in agonist induced angiotensin ii [ang ii] pma tnf alpha growth factors and thrombin vascular cell nadph oxidase activation 18 21 23 and in the development of atherosclerotic lesions in apoe / mice 24 .
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0we also found that coronary microvascular endothelial cells isolated from wild type mice respond to pma and tnf alpha with a significant increase in o 2 generation.
7660NCF1neutrophil cytosolic factor 1, (chronic granulomatous disease, autosomal 1)p47 protein1.0transfection of the full length p47 cdna into p47 coronary microvascular endothelial cells cmec caused expression of p47 protein and restoration of the ros response to pma and tnf alpha.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0transfection of the full length p47 cdna into p47 coronary microvascular endothelial cells cmec caused expression of p47 protein and restoration of the ros response to pma and tnf alpha.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0in wild type cmec transfection of antisense p47 cdna substantially reduced p47 expression and caused loss of the ros response to pma and tnf alpha 18 .
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0it is widely known that p47 phosphorylation plays a pivotal role in neutrophil nadph oxidase activation by providing physical binding domains to cytochrome b 558 and p67 25 .
7427MT-CYBmitochondrially encoded cytochrome bcytochrome b1.0it is widely known that p47 phosphorylation plays a pivotal role in neutrophil nadph oxidase activation by providing physical binding domains to cytochrome b 558 and p67 25 .
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0the kinetics of activation of nadph oxidase correspond to the kinetics of p47 phosphorylation 25 26 .
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0another regulatory subunit that has been well studied in nonphagocytes is the gtpase rac1 which binds to p67 and activates nadph oxidase in its gtp bound state 27 .
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0microinjection of constitutively active h rac1 into hepg2 cells increases nadph oxidase dependent ros generation whereas microinjection of dominant negative mutant h rac1 inhibits nadph oxidase 28 .
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0in endothelial cells dominant negative rac1 abrogates both basal 29 and shear stress induced nadph oxidase dependent ros production 30 .
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0 31 found that human endothelial cell responses to vascular endothelial growth factor required a threshold level of nadph oxidase generated ros which was regulated by rac1.
12680VEGFAvascular endothelial growth factor Avascular endothelial growth factor1.0 31 found that human endothelial cell responses to vascular endothelial growth factor required a threshold level of nadph oxidase generated ros which was regulated by rac1.
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0 32 reported that pdgf induced cell cycle activation in airway smooth muscle cells was nadph oxidase dependent and was inhibited by a dominant negative allele of rac1.
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0redox regulation of nadph oxidase: feedback and feedforward mechanisms
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0another feature of nonphagocyte nadph oxidase from the literature is that enzyme activity may be regulated by its own product ros.
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0ros such as h 2 o 2 promote the degradation of ubiquitinated rac1 whereas inhibitors of nadph oxidase such as diphenyleneiodonium block the degradation of ubiquitinated rac1 by the proteasome 33 .
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0 34 showed a feedforward mechanism such that exogenous exposure of smc or fibroblasts to h 2 o 2 activated nadph oxidase to produce endogenous o 2 thereby amplifying the vascular injury process.
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0the hypothesis is that the self limiting mechanism may be involved mainly in the maintenance of the low output of the nonphagocyte nadph oxidase during physiologic conditions whereas the feedforward mechanism may play a role in nadph oxidase dependent oxidative stress in a variety of diseases including atherosclerosis and inflammation.
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0 during physiologic conditions whereas the feedforward mechanism may play a role in nadph oxidase dependent oxidative stress in a variety of diseases including atherosclerosis and inflammation.
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0the amount of ros produced by nonphagocyte nadph oxidase is normally relatively low even in many pathologic settings and is mainly generated in the intracellular compartment.
11892TNFtumor necrosis factor (TNF superfamily, member 2)tnf alpha1.0it has been clearly demonstrated that ros generated by nadph oxidase are involved in signal transduction in response to several cytokines e.g. ang ii thrombin pdgf tnf alpha.
333AGTangiotensinogen (serpin peptidase inhibitor, clade A, member 8)ang ii1.0it has been clearly demonstrated that ros generated by nadph oxidase are involved in signal transduction in response to several cytokines e.g. ang ii thrombin pdgf tnf alpha.
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0it has been clearly demonstrated that ros generated by nadph oxidase are involved in signal transduction in response to several cytokines e.g. ang ii thrombin pdgf tnf alpha.
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0agonist binding to receptor rapidly activates nadph oxidase followed by elevated intracellular o 2 and h 2 o 2 levels and activation of signaling molecules including protein tyrosine kinases serine/threonine kinases phospholipases and ca dependent pathways.
333AGTangiotensinogen (serpin peptidase inhibitor, clade A, member 8)ang ii1.0in vsmc ang ii dependent rises in intracellular ca can be blocked by inhibitors of nadph oxidase or genetic manipulation of nadph oxidase expression 2 8 29 38 .
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0in vsmc ang ii dependent rises in intracellular ca can be blocked by inhibitors of nadph oxidase or genetic manipulation of nadph oxidase expression 2 8 29 38 .
333AGTangiotensinogen (serpin peptidase inhibitor, clade A, member 8)ang ii1.0in blood vessels ang ii infusion results in an increased expression and activity of nadph oxidase which is partly pkc dependent 39 .
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0in blood vessels ang ii infusion results in an increased expression and activity of nadph oxidase which is partly pkc dependent 39 .
333AGTangiotensinogen (serpin peptidase inhibitor, clade A, member 8)ang ii1.0in the heart ang ii increases o 2 production and cardiac hypertrophy only in wild type animals but not in gp91 knockout mice suggesting a role for nadph oxidase 36 .
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0in the heart ang ii increases o 2 production and cardiac hypertrophy only in wild type animals but not in gp91 knockout mice suggesting a role for nadph oxidase 36 .
333AGTangiotensinogen (serpin peptidase inhibitor, clade A, member 8)ang ii1.0ang ii induced mapk activation in vascular cells requires nadph oxidase derived ros because ang ii was unable to activate mapk in aortas from p47 knockout mice 23 .
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0ang ii induced mapk activation in vascular cells requires nadph oxidase derived ros because ang ii was unable to activate mapk in aortas from p47 knockout mice 23 .
333AGTangiotensinogen (serpin peptidase inhibitor, clade A, member 8)ang ii1.0similarly in cultured vsmc ang ii induced mapk activation could be inhibited by antisense oligonucleotides or an antibody against p22 implicating a role of nadph oxidase derived ros 40 .
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0similarly in cultured vsmc ang ii induced mapk activation could be inhibited by antisense oligonucleotides or an antibody against p22 implicating a role of nadph oxidase derived ros 40 .
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0in the heart we also found a good correlation between nadph oxidase derived ros production and mapk activation during the development of cardiac hypertrophy 41 .
1516CATcatalasecatalase1.0ess antioxidant defense systems that include ros degrading molecules ros scavengers such as uric acid ascorbic acid and sulfhydryl containing molecules e.g glutathione and antioxidant enzymes such as catalase glutathione peroxidase and superoxide dismutases.
333AGTangiotensinogen (serpin peptidase inhibitor, clade A, member 8)ang ii1.0 3 nadph oxidase was regarded as the most important source of o 2 in the vessel wall of experimental hypertension models including ang ii induced hypertension renovascular hypertension and genetic hypertension.
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0 3 nadph oxidase was regarded as the most important source of o 2 in the vessel wall of experimental hypertension models including ang ii induced hypertension renovascular hypertension and genetic hypertension.
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0 42 reported that vessels from patients with coronary heart disease and with identified risk factors had much higher nadph oxidase activity than vessels from control groups; they also found that diabetes and hypercholesterolemia were independently associated with increased nadph oxidase derived ros generation.
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0 activity than vessels from control groups; they also found that diabetes and hypercholesterolemia were independently associated with increased nadph oxidase derived ros generation.
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0in an animal model of pressure overload cardiac hypertrophy and failure enhanced nadph oxidase activity coexisted with cardiac dysfunction 41 43 .
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0impaired endothelium dependent cardiac function as a result of increased nadph oxidase dependent ros generation could be restored by treatment with the antioxidant vitamin c or deferoxamine 43 .
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0targeted inhibition of nadph oxidase protected the liver from ischemia reperfusion injury figure 1 44 .
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0although the role of nadph oxidase in type 1 diabetes is still not clear ros have been found to be among the first damaging species generated in islet cells after streptozotocin administration in rodents and may kill islet cells 45 .
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0 46 showed that incubation of human endothelial cells with red blood cells isolated from patients with type 1 diabetes but not from normal volunteers activated endothelial nadph oxidase and increased endothelial ros generation which was due to the formation of advanced glycation end products on the surface of diabetic red blood cells.
6081INSinsulininsulin1.0in type 2 diabetes a major pathophysiological alteration is insulin resistance and there is a growing body of evidence demonstrating the coexistence of insulin resistance and endothelial dysfunction.
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0endothelial dysfunction characterized by increased nadph oxidase dependent ros generation has been shown in animal models of diabetes 47 48 and in patients with diabetes 42 .
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0although the origin of increased ros generation in renal diseases is multifactorial the kidney is now known to express nadph oxidase and generate ros 6 10 13 .
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0it has been shown that kidneys from adult spontaneously hypertensive rats shr express significantly higher level of nadph oxidase and produce more ros than normal controls 49 .
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0in another study the enzymatic sources of o 2 generation were examined in different regions of the rat kidney and it was reported that a higher nadph oxidase dependent o 2 generation was present in renal cortex and outer medulla than in the papilla 50 .
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0glomerular mesangial cells are target cells of diabetic nephropathy and endowed with a nadph oxidase.
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0the endothelial cell lining of the glomerulus is strategically situated at the interface between the blood and the mesangium and expresses a constitutively active nadph oxidase 49 .
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0exposing mesangial cells as well as endothelial cells to a diabetic environment such as high glucose or free fatty acids activates nadph oxidase and increases ros generation 20 .
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0increased levels of oxidized ldl and hyperlipidemia are also potent activators of nadph oxidase and also recognized as pathogenic factors in long term complications of diabetes 52 53 .
333AGTangiotensinogen (serpin peptidase inhibitor, clade A, member 8)ang ii1.0in addition the intrarenal concentration of ang ii is much higher than in the serum.
333AGTangiotensinogen (serpin peptidase inhibitor, clade A, member 8)ang ii1.0ang ii activates nadph oxidase in both mesangial cells 17 and endothelial cells 39 .
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0ang ii activates nadph oxidase in both mesangial cells 17 and endothelial cells 39 .
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0more direct in a rat model of diabetic nephropathy upregulation of the p47 subunit of nadph oxidase and an increase in ros production has been demonstrated 54 .
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0in summary the nonphagocytic nadph oxidase has emerged as a potentially important target to focus on to explore the mechanisms underlying the pathogenesis of long term complications in patients with diabetes.
14874NOX5NADPH oxidase, EF-hand calcium binding domain 5nadph oxidase1.0possible therapeutic approaches include the use of antioxidants or direct pharmaceutical or genetic manipulation of nadph oxidase expression and activity.