Title : Glomerular angiotensinogen is induced in mesangial cells in diabetic rats via reactive oxygen species--ERK/JNK pathways.

Pub. Date : 2010 Nov

PMID : 20686488






8 Functional Relationships(s)
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1 To confirm this system, primary rat mesangial cells were treated with hydrogen peroxide (H2O2) to clarify the signal transduction pathway for glomerular angiotensinogen expression. Hydrogen Peroxide angiotensinogen Rattus norvegicus
2 To confirm this system, primary rat mesangial cells were treated with hydrogen peroxide (H2O2) to clarify the signal transduction pathway for glomerular angiotensinogen expression. Hydrogen Peroxide angiotensinogen Rattus norvegicus
3 H2O2 induced an increase in angiotensinogen expression in a dose- and time-dependent manner, and the H2O2-induced upregulation of angiotensinogen was suppressed by catalase. Hydrogen Peroxide angiotensinogen Rattus norvegicus
4 H2O2 induced an increase in angiotensinogen expression in a dose- and time-dependent manner, and the H2O2-induced upregulation of angiotensinogen was suppressed by catalase. Hydrogen Peroxide angiotensinogen Rattus norvegicus
5 H2O2 induced an increase in angiotensinogen expression in a dose- and time-dependent manner, and the H2O2-induced upregulation of angiotensinogen was suppressed by catalase. Hydrogen Peroxide angiotensinogen Rattus norvegicus
6 H2O2 induced an increase in angiotensinogen expression in a dose- and time-dependent manner, and the H2O2-induced upregulation of angiotensinogen was suppressed by catalase. Hydrogen Peroxide angiotensinogen Rattus norvegicus
7 Furthermore, the H2O2-induced upregulation of angiotensinogen was inhibited by a mitogen-activated protein kinase (MAPK) kinase (MEK) inhibitor and a c-Jun N-terminal kinase (JNK) inhibitor, but not inhibited by a p38 MAPK inhibitor. Hydrogen Peroxide angiotensinogen Rattus norvegicus
8 These data suggest that the majority of angiotensinogen was induced in mesangial cells in glomeruli under pathological conditions such as diabetic nephropathy, and angiotensinogen expression in mesangial cells was mediated by H2O2 and the subsequent activation of extracellular-regulated kinase (ERK)/JNK pathways. Hydrogen Peroxide angiotensinogen Rattus norvegicus