EASL 2014:肠道微生态失衡与致酒精性肝病易感性相关

2014-04-14 佚名 dxy

临床上常常可以观察到这样的现象,在很多大量饮酒者中,酒精性肝病的严重程度却并不与酒精摄入量的多少呈正比。这就暗示有其他的因素在影响着酒精性肝病的发生发展。为了揭晓这其中可能起作用的因素,来自法国的Llopis等通过将人的粪便微生物移植到无菌小鼠体内,发现肠道菌群在酒精性肝病的进展中起重要作用。 研究者将严重酒精性肝炎患者及无酒精性肝炎患者的肠道微生物(两者饮酒量相似)分别移植入两组无菌小鼠体内。继

临床上常常可以观察到这样的现象,在很多大量饮酒者中,酒精性肝病的严重程度却并不与酒精摄入量的多少呈正比。这就暗示有其他的因素在影响着酒精性肝病的发生发展。为了揭晓这其中可能起作用的因素,来自法国的Llopis等通过将人的粪便微生物移植到无菌小鼠体内,发现肠道菌群在酒精性肝病的进展中起重要作用。

研究者将严重酒精性肝炎患者及无酒精性肝炎患者的肠道微生物(两者饮酒量相似)分别移植入两组无菌小鼠体内。继而用Lieber-De-Carli酒精饲料喂养小鼠,最终结果的检测包括炎症程度、肠道渗透性评估,并采用时间温度梯度电泳和焦磷酸测序法进行肠道菌群的成分判定。

研究发现,肠道菌群成分鉴定显示粪便移植起效。与移植无酒精性肝炎的患者粪便的小鼠相
比,移植了严重酒精性肝炎患者粪便的小鼠,其肝脏、脂肪组织及肠系膜淋巴结内炎症程度更剧烈,且肠道黏膜的毁坏更严重。酒精性肝病的表型与肠道菌群的丰富程度相关。

细胞水平研究结果显示,有两种梭状芽孢杆菌可以产生酒精,这更是进一步解释了肠道菌群与肝炎相关联的可能机制。

该研究表明,肠道菌群在酒精性肝病的发生发展中起重要作用,肠道微生态失衡可以破坏肠道黏膜,引起肠道渗透性升高,加剧肝脏炎症。这就为酒精性肝病的治疗提供了一种潜在的新的治疗方案,但仍需进一步的研究来证实。

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    2014-04-16 kord1983
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    2014-04-16 lq1771

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