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Resistin and visfatin in steatotic and non-steatotic livers in the setting of partial hepatectomy under ischemia-reperfusion

医学 内科学 下调和上调 脂肪细胞 脂肪肝 内分泌学 脂肪变性 抵抗素 胰岛素抵抗 肝切除术 脂肪组织 脂肪因子 化学 胰岛素 外科 生物化学 切除术 基因 疾病
作者
M. Elias-Miró,M. Mendes-Braz,Rubén Cereijo,Francesc Villarroya,Mónica B. Jiménez‐Castro,Jordi Gracia‐Sancho,Sergi Guixé‐Muntet,Marta Massip‐Salcedo,Joan Carles Domingo,Raquel Bermudo,Juan Rodés,Carmen Peralta
出处
期刊:Journal of Hepatology [Elsevier]
卷期号:60 (1): 87-95 被引量:21
标识
DOI:10.1016/j.jhep.2013.07.041
摘要

This study examined whether the regulation of resistin and visfatin could reduce damage and improve regeneration in both steatotic and non-steatotic livers undergoing partial hepatectomy under ischemia-reperfusion, a procedure commonly applied in clinical practice to reduce bleeding.Resistin and visfatin were pharmacologically modulated in lean and obese animals undergoing partial hepatectomy under ischemia-reperfusion.No evident role for these adipocytokines was observed in non-steatotic livers. However, obese animals undergoing liver surgery showed increased resistin in liver and plasma, without changes in adipose tissue, together with visfatin downregulation in liver and increment in plasma and adipose tissue. Endogenous resistin maintains low levels of visfatin in the liver by blocking its hepatic uptake from the circulation, thus regulating the visfatin detrimental effects on hepatic damage and regenerative failure. Indeed, the administration of anti-resistin antibodies increased hepatic accumulation of adipocyte-derived visfatin, exacerbating damage and regenerative failure. Interestingly, treatment with anti-visfatin antibodies protected steatotic livers, and similar results were obtained with the concomitant inhibition of resistin and visfatin. Thus, when visfatin was inhibited, the injurious effects of anti-resistin antibodies disappeared. Herein we show that upregulation of visfatin increased NAD levels in the remnant steatotic liver, whereas visfatin inhibition decreased them. These later observations suggest that visfatin may favour synthesis of NAD instead of DNA and induces alterations in amino acid metabolism-urea cycle and NO production, overall negatively affecting liver viability.Our results indicate the clinical potential of visfatin blocking-based therapies in steatotic livers undergoing partial hepatectomy with ischemia-reperfusion.
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