ANGIOTENSIN CONVERTING ENZYME INHIBITORS IMPROVE HEPATIC STEATOSIS BY MODULATING EXPRESSION OF TUMOR NECROSIS FACTOR-Alpha, INTERLEUKIN-6 AND ADIPONECTIN RECEPTOR-2 IN RATS WITH TYPE 2 DIABETES. |
Authors: |
Zhang, X Li, Z Liu, D Xu, X Mei, Z Shen, W
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Citation: |
Zhang X, etal., Clin Exp Pharmacol Physiol. 2008 Nov 28. |
RGD ID: |
2307264 |
Pubmed: |
PMID:19076162 (View Abstract at PubMed) |
DOI: |
DOI:10.1111/j.1440-1681.2008.05129.x (Journal Full-text) |
1. Angiotensin converting enzyme inhibitors (ACEIs) are hypotensive drugs. ACEIs prevent type 2 diabetes (T2D) in high risk individuals. However, in T2D, the effects of ACEIs on hepatic steatosis are unknown. We aimed to examine the effects of ACEIs on changes in liver histology and hepatic mRNA expression of adipokines in rats with T2D. 2. Thirty-six rats were divided into a normal control group, a T2D group and a fosinopril treatment group. After six weeks of treatment with fosinopril, an ACEI, we evaluated changes in liver histology, serum fasting glucose (FG), insulin (INS), triglyceride (TG), total cholersterol (TCHO), alanine aminotransferase (ALT), aspartate aminotransferase (AST), tumor necrosis factor (TNF)-alpha, interleukin (IL)-6, adiponectin and hepatic TNF-alpha, IL-6 and adiponectin receptor-2 (adipoR2) mRNA. 3. The degree of hepatic steatosis and inflammation, serum FG, INS, TG, TCHO, ALT, TNF-alpha and IL-6 concentrations, and hepatic TNF-alpha and IL-6 mRNA expression in rats with T2D were significantly higher compared with normal controls. Serum adiponectin concentration and hepatic adipoR2 mRNA expression in rats with T2D were significantly lower compared with normal controls. Fosinopril significantly reduced the degree of hepatic steatosis, serum FG, INS, ALT, TNF-alpha and IL-6 concentrations, and hepatic TNF-alpha and IL-6 mRNA expression. Fosinopril significantly increased serum adiponectin concentration and hepatic adipoR2 mRNA expression. 4. ACEIs improved insulin sensitivity and hepatic steatosis in rats with T2D by increasing circulating adiponectin and hepatic adipoR2 level, in addition to reducing pro-inflammatory cytokines in the circulation and liver.
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