Suppr超能文献

血管紧张素-(1-7)口服制剂可改善脂代谢,预防高脂饮食诱导的小鼠肝脂肪变性和炎症。

Oral formulation of angiotensin-(1-7) improves lipid metabolism and prevents high-fat diet-induced hepatic steatosis and inflammation in mice.

机构信息

Department of Pharmacology, Universidade Federal de Minas Gerais, Av Antonio Carlos 6627-ICB, 31270-901, Belo Horizonte, MG, Brazil.

出版信息

Hypertension. 2013 Aug;62(2):324-30. doi: 10.1161/HYPERTENSIONAHA.111.00919. Epub 2013 Jun 10.

Abstract

Angiotensin (Ang)-(1-7) has been described as an important tool on treating and preventing metabolic disorders. In this study, we aimed to evaluate the effect of an oral formulation of Ang-(1-7) included in hydroxypropylβ-cyclodextrin (HPβCD/Ang-[1-7]) on hepatic function, steatosis, and on liver inflammatory markers expression in mice treated with a high-fat diet. Male FVB/N mice were divided into 4 groups and fed for 60 days, with each group receiving 1 of the following diets: standard diet+HPβCD, standard diet+Ang-(1-7)/HPβCD, high-fat diet+HPβCD, or high-fat diet+Ang-[1-7]/HPβCD. Body weight, food intake, and blood parameters, such as total cholesterol, triglyceride, alaninetransaminases, and aspartate transaminases, were evaluated. Immunohistochemical analyses were performed for inflammatory markers tumor necrosis factor-α and interleukin-6. Expression of angiotensin converting enzyme, angiotensin-converting enzyme-2, interleukin-1β, tumor necrosis factor-α, interleukin-6, transforming growth factor-β, acetyl-CoA carboxylase, carbohydrate-responsive element-binding protein, peroxisome proliferator-activated receptor-γ, and sterol regulatory element-binding proteins-1c was evaluated by quantitative real-time polymerase chain reaction. The major findings of our study included reduced liver fat mass and weight, decreased plasma total cholesterol, triglyceride, and alaninetransaminase enzyme levels in the oral Ang-(1-7)-treated groups compared with the control groups. These results were accompanied by a significant reduction in tumor necrosis factor-α and interleukin-6 mRNA expression in the liver. Analyses of liver adipogenesis-related genes by quantitative real-time polymerase chain reaction showed that acetyl-CoA carboxylase, peroxisome proliferator-activated receptor-γ, and sterol regulatory element-binding proteins-1c mRNA expression were significantly suppressed. In conclusion, we observed that treatment with Ang-(1-7) improved metabolism and decreased proinflammatory profile and fat deposition in liver of mice.

摘要

血管紧张素(Ang)-(1-7)已被描述为治疗和预防代谢紊乱的重要工具。在这项研究中,我们旨在评估包含在羟丙基-β-环糊精(HPβCD/Ang-[1-7])中的 Ang-(1-7)的口服制剂对接受高脂肪饮食的小鼠的肝功能、脂肪变性以及肝脏炎症标志物表达的影响。雄性 FVB/N 小鼠被分为 4 组,并喂养 60 天,每组接受以下饮食之一:标准饮食+HPβCD、标准饮食+Ang-(1-7)/HPβCD、高脂肪饮食+HPβCD 或高脂肪饮食+Ang-[1-7]/HPβCD。评估体重、食物摄入量以及总胆固醇、甘油三酯、丙氨酸转氨酶和天冬氨酸转氨酶等血液参数。进行了肿瘤坏死因子-α和白细胞介素-6 等炎症标志物的免疫组织化学分析。通过定量实时聚合酶链反应评估血管紧张素转换酶、血管紧张素转换酶-2、白细胞介素-1β、肿瘤坏死因子-α、白细胞介素-6、转化生长因子-β、乙酰辅酶 A 羧化酶、碳水化合物反应元件结合蛋白、过氧化物酶体增殖物激活受体-γ、固醇调节元件结合蛋白-1c 的表达。我们的主要发现包括与对照组相比,口服 Ang-(1-7)治疗组的肝脂肪量和体重减少,血浆总胆固醇、甘油三酯和丙氨酸转氨酶水平降低。这些结果伴随着肝脏中肿瘤坏死因子-α和白细胞介素-6 mRNA 表达的显著减少。通过定量实时聚合酶链反应分析肝脏脂肪生成相关基因显示,乙酰辅酶 A 羧化酶、过氧化物酶体增殖物激活受体-γ 和固醇调节元件结合蛋白-1c mRNA 表达显著受到抑制。总之,我们观察到 Ang-(1-7)治疗改善了代谢,降低了小鼠肝脏的促炎表型和脂肪沉积。

文献AI研究员

20分钟写一篇综述,助力文献阅读效率提升50倍。

立即体验

用中文搜PubMed

大模型驱动的PubMed中文搜索引擎

马上搜索

文档翻译

学术文献翻译模型,支持多种主流文档格式。

立即体验