Studying the Roles of the Renin–Angiotensin System in Accelerating the Disease of High-Fat-Diet-Induced Diabetic Nephropathy in a db/db and ACE2 Double-Gene-Knockout Mouse Model
| Autor: | Cheng-Yi Chen, Meng-Wei Lin, Xing-Yang Xie, Cheng-Han Lin, Chung-Wei Yang, Pei-Ching Wu, Dung-Huan Liu, Chih-Jen Wu, Chih-Sheng Lin |
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| Jazyk: | angličtina |
| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | International Journal of Molecular Sciences, Vol 25, Iss 1, p 329 (2023) |
| Druh dokumentu: | article |
| ISSN: | 1422-0067 1661-6596 74944398 |
| DOI: | 10.3390/ijms25010329 |
| Popis: | Diabetic nephropathy (DN) is a crucial metabolic health problem. The renin–angiotensin system (RAS) is well known to play an important role in DN. Abnormal RAS activity can cause the over-accumulation of angiotensin II (Ang II). Angiotensin-converting enzyme inhibitor (ACEI) administration has been proposed as a therapy, but previous studies have also indicated that chymase, the enzyme that hydrolyzes angiotensin I to Ang II in an ACE-independent pathway, may play an important role in the progression of DN. Therefore, this study established a model of severe DN progression in a db/db and ACE2 KO mouse model (db and ACE2 double-gene-knockout mice) to explore the roles of RAS factors in DNA and changes in their activity after short-term (only 4 weeks) feeding of a high-fat diet (HFD) to 8-week-old mice. The results indicate that FD-fed db/db and ACE2 KO mice fed an HFD represent a good model for investigating the role of RAS in DN. An HFD promotes the activation of MAPK, including p-JNK and p-p38, as well as the RAS signaling pathway, leading to renal damage in mice. Blocking Ang II/AT1R could alleviate the progression of DN after administration of ACEI or chymase inhibitor (CI). Both ACE and chymase are highly involved in Ang II generation in HFD-induced DN; therefore, ACEI and CI are potential treatments for DN. |
| Databáze: | Directory of Open Access Journals |
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