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利拉鲁肽改善肝硬化肝脏微血管功能障碍:转化研究证据。

Liraglutide improves liver microvascular dysfunction in cirrhosis: Evidence from translational studies.

机构信息

Liver Vascular Biology Research Group, Barcelona Hepatic Hemodynamic Lab, IDIBAPS Biomedical Research Institute - CIBEREHD, Barcelona, Spain.

Laboratório de Biofísica Celular e Inflamação, PUCRS, Porto Alegre, RS, Brazil.

出版信息

Sci Rep. 2017 Jun 12;7(1):3255. doi: 10.1038/s41598-017-02866-y.

Abstract

Hepatic stellate cells (HSC) play a key role in the development of chronic liver disease (CLD). Liraglutide, well-established in type 2 diabetes, showed anti-inflammatory and anti-oxidant properties. We evaluated the effects of liraglutide on HSC phenotype and hepatic microvascular function using diverse pre-clinical models of CLD. Human and rat HSC were in vitro treated with liraglutide, or vehicle, and their phenotype, viability and proliferation were evaluated. In addition, liraglutide or vehicle was administered to rats with CLD. Liver microvascular function, fibrosis, HSC phenotype and sinusoidal endothelial phenotype were determined. Additionally, the effects of liraglutide on HSC phenotype were analysed in human precision-cut liver slices. Liraglutide markedly improved HSC phenotype and diminished cell proliferation. Cirrhotic rats receiving liraglutide exhibited significantly improved liver microvascular function, as evidenced by lower portal pressure, improved intrahepatic vascular resistance, and marked ameliorations in fibrosis, HSC phenotype and endothelial function. The anti-fibrotic effects of liraglutide were confirmed in human liver tissue and, although requiring further investigation, its underlying molecular mechanisms suggested a GLP1-R-independent and NF-κB-Sox9-dependent one. This study demonstrates for the first time that liraglutide improves the liver sinusoidal milieu in pre-clinical models of cirrhosis, encouraging its clinical evaluation in the treatment of chronic liver disease.

摘要

肝星状细胞(HSC)在慢性肝病(CLD)的发展中起着关键作用。利拉鲁肽在 2 型糖尿病中得到了很好的应用,具有抗炎和抗氧化作用。我们使用不同的 CLD 临床前模型评估了利拉鲁肽对 HSC 表型和肝微血管功能的影响。用利拉鲁肽或载体体外处理人源和大鼠源 HSC,并评估其表型、活力和增殖情况。此外,还向 CLD 大鼠给予利拉鲁肽或载体。测定肝微血管功能、纤维化、HSC 表型和窦内皮表型。此外,还在人精准切肝切片中分析了利拉鲁肽对 HSC 表型的影响。利拉鲁肽明显改善了 HSC 表型并减少了细胞增殖。接受利拉鲁肽治疗的肝硬化大鼠表现出明显改善的肝微血管功能,表现为门静脉压力降低、肝内血管阻力改善以及纤维化、HSC 表型和内皮功能显著改善。利拉鲁肽的抗纤维化作用在人肝组织中得到了证实,尽管需要进一步研究,但它的潜在分子机制表明其与 GLP1-R 无关,而是与 NF-κB-Sox9 有关。这项研究首次证明,利拉鲁肽可改善肝硬化临床前模型中的肝窦环境,这鼓励其在慢性肝病治疗中的临床评估。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/37a6/5468330/64304607d68d/41598_2017_2866_Fig1_HTML.jpg

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