Liver Int:生长分化因子15预测NAFLD患者进展期肝纤维化

2017-09-20 MedSci MedSci原创

总之,研究表明,GDF15可以作为进展期肝纤维化的一种新的生物标志物。

本研究旨在探究生长分化因子15(GDF15)能否独立于胰岛素抵抗,影响非酒精性脂肪性肝病(NAFLD)组织学严重程度。

在经肝组织活检验证的NAFLD队列,研究者使用酶联免疫吸附方法检测血清GDF15水平。

研究结果表明,在190例患者中(平均年龄为53±14岁,男性为52.1%),72例患者(男性, 65.3%)经肝组织活检确定为非酒精性脂肪性肝病(NAFL)患者,78例(男性, 44.9%)患者经肝组织活检确定为非酒精性脂肪性肝炎(NASH)患者。NASH患者的GDF15水平明显高于对照组(P = 0.010)或NAFL患者(P = 0.001)。进展期肝纤维化患者(≥F3)其血清GDF15水平显著高于其他患者(F0-2,P <0.001)。在NAFLD患者中,在没有纳入NASH风险的情况下,即使调整年龄、性别、体重指数、吸烟状况、高血压糖尿病、天冬氨酸转氨酶、血小板、白蛋白、胰岛素抵抗和低骨骼肌质量等因素(优势比,4.27;95%置信区间,1.04 - 17.63),GDF15水平最高的四分之一仍与进展期肝纤维化显著相关。GDF15水平与肝硬度呈显著正相关(Spearman's rho, 0.525; P < 0.001)。棕榈酸酯治疗显著提高了Kupffer细胞 GDF15 mRNA的表达水平,然而,肝细胞的表达水平并未显著增加。GDF15治疗导致LX-2细胞 a-平滑肌肌动蛋白,I型胶原,磷酸化水平的Smad2和Smad3表达增加。

总之,研究表明,GDF15可以作为进展期肝纤维化的一种新的生物标志物。

原始出处:

Koo B, Um SH, Seo DS, et al. Growth differentiation factor 15 predicts advanced fibrosis in biopsy-proven non-alcoholic fatty liver disease. Liver Int, 2017, Sep 12. doi: 10.1111/liv.13587.

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