دورية أكاديمية
Upregulation of NADH/NADPH oxidase 4 by angiotensin II induces podocyte apoptosis
| العنوان: | Upregulation of NADH/NADPH oxidase 4 by angiotensin II induces podocyte apoptosis |
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| المؤلفون: | Tae-Sun Ha, Su-Bin Seong, Dong-Soo Ha, Seung Jung Kim |
| المصدر: | Kidney Research and Clinical Practice, Vol 42, Iss 2, Pp 202-215 (2023) |
| بيانات النشر: | The Korean Society of Nephrology, 2023. |
| سنة النشر: | 2023 |
| المجموعة: | LCC:Internal medicine LCC:Specialties of internal medicine |
| مصطلحات موضوعية: | angiotensin ii, angiotensin type 1 receptor, apoptosis, nadph oxidases, oxidative stress, podocytes, Internal medicine, RC31-1245, Specialties of internal medicine, RC581-951 |
| الوصف: | Background Angiotensin II induces glomerular and podocyte injury via systemic and local vasoconstrictive or non-hemodynamic effects including oxidative stress. The release of reactive oxygen species (ROS) from podocytes may participate in the development of glomerular injury and proteinuria. We studied the role of oxidative stress in angiotensin II-induced podocyte apoptosis. Methods Mouse podocytes were incubated in media containing various concentrations of angiotensin II at different incubation times and were transfected with NADH/NADPH oxidase 4 (Nox4) or angiotensin II type 1 receptor for 24 hours. The changes in intracellular and mitochondrial ROS production and podocyte apoptosis were measured according to the presence of angiotensin II. Results Angiotensin II increased the generation of mitochondrial superoxide anions and ROS levels but suppressed superoxide dismutase activity in a dose- and time-dependent manner that was reversed by probucol, an antioxidant. Angiotensin II increased Nox4 protein and expression by a transcriptional mechanism that was also reversed by probucol. In addition, the suppression of Nox4 by small interfering RNA (siRNA) reduced the oxidative stress induced by angiotensin II. Angiotensin II treatment also upregulated AT1R protein. Furthermore, angiotensin II promoted podocyte apoptosis, which was reduced significantly by probucol and Nox4 siRNA and also recovered by angiotensin II type 1 receptor siRNA. Conclusion Our findings suggest that angiotensin II increases the generation of mitochondrial superoxide anions and ROS levels via the upregulation of Nox4 and angiotensin II type 1 receptor. This can be prevented by Nox4 inhibition and/or antagonizing angiotensin II type 1 receptor as well as use of antioxidants. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English Korean |
| تدمد: | 2211-9132 2211-9140 |
| العلاقة: | http://krcp-ksn.org/upload/pdf/j-krcp-22-198.pdfTest; https://doaj.org/toc/2211-9132Test; https://doaj.org/toc/2211-9140Test |
| DOI: | 10.23876/j.krcp.22.198 |
| الوصول الحر: | https://doaj.org/article/e2550ce7b8d04d2799c533fb6794f883Test |
| رقم الانضمام: | edsdoj.2550ce7b8d04d2799c533fb6794f883 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 22119132 22119140 |
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| DOI: | 10.23876/j.krcp.22.198 |