骆驼乳对小鼠酒精性肝损伤的保护作用

被引:9
作者
白路平 [1 ]
乔向宇 [1 ]
吉日木图 [1 ,2 ]
明亮 [1 ,2 ]
机构
[1] 内蒙古农业大学乳品生物技术与工程教育部重点实验室
[2] 内蒙古骆驼研究院
基金
国家重点研发计划;
关键词
骆驼乳; 慢性酒精性肝损伤; 抗氧化; 抗炎作用;
D O I
暂无
中图分类号
TS252.1 [基础科学];
学科分类号
100403 [营养与食品卫生学];
摘要
目的:研究骆驼乳对Lieber-DeCarli液体饲料诱导的小鼠酒精性肝损伤的保护作用。方法:将40只雄性C57BL/6NCr小鼠随机分为对照组(Con)、模型组(Et)、骆驼乳高剂量组(EtCM_H,3 g/kg)、骆驼乳低剂量组(EtCM_L,1.5 g/kg)和阳性对照组(美他多辛,300 mg/kg)。试验8周,前4周仅饲喂专用饲料,不灌胃;后4周饲喂方式不变,灌胃乳或美他多辛,每日灌胃1次。灌胃结束后,按照5 g/kg剂量一次性灌胃31.5%酒精溶液,建立NIAAA模型。测定肝脏抗氧化、抗炎指标、细胞凋亡标志物活性、血清转氨酶活性,HE染色观察肝组织病理学变化,油红O染色观察肝脏脂质蓄积程度,TUNEL染色法检测肝细胞凋亡情况。结果:骆驼乳能显著降低肝损伤小鼠血清谷丙转氨酶和谷草转氨酶活力,降低小鼠肝组织丙二醛、甘油三酯、肿瘤坏死因子-α(TNF-α)、白介素-1β(IL-1β)、白介素-6(IL-6)含量和半胱天冬蛋白酶-3活性,提高小鼠肝组织超氧化物歧化酶活力,提高还原型谷胱甘肽和白介素-10(IL-10)含量,减少肝脏内脂质蓄积,减轻肝细胞水肿,拮抗肝细胞凋亡。结论:骆驼乳对Lieber-DeCarli液体饲料诱导的小鼠酒精性肝损伤具有保护作用,呈现剂量依赖性特点,高剂量优于低剂量。骆驼乳可能通过提高肝细胞抗氧化能力与抗炎因子水平,促进脂肪转运,进而使肝细胞结构和功能逐渐修复来实现这种保护作用。
引用
收藏
页码:140 / 149
页数:10
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