马氏珠母贝肉提取物对小鼠急性酒精性肝损伤的影响Improving Effect of Pinctada martensii Meat Extract on Acute Alcoholic Liver Injury in Mice
王利霞,章超桦,高加龙,郑惠娜,曹文红,秦小明,陈建平
摘要(Abstract):
【目的】探讨马氏珠母贝(Pinctada martensii)肉提取物对小鼠急性酒精性肝损伤(alcoholic liver disease,ALD)的解酒护肝作用。【方法】采用碱溶酸沉法提取贝肉蛋白质,酶解超滤后制备截留分子质量为<3 ku(F-Ⅰ)、3~8 ku(F-Ⅱ)、> 8 ku(F-Ⅲ)的超滤组分,同时采用水提法制备马氏珠母贝肉全脏器水提物。以急性酒精性肝损伤小鼠为模型,以小鼠血清生化指标(谷丙转氨酶ALT、谷草转氨酶AST)、肝脏生化指标(超氧化物歧化酶SOD、谷胱甘肽GSH、甘油三酯TG、丙二醛MDA、乙醇脱氢酶ADH和乙醛脱氢酶ALDH)和肝脏病理切片为指标评价各提取物对急性酒精性肝损伤的改善作用,并对抗肝损伤活性较高组分进行氨基酸含量测定及质谱结构鉴定。【结果】与模型组相比,贝肉蛋白酶解超滤组分和水提物组均能极显著降低小鼠血清中ALT和AST活性(P<0.01),降低肝脏中MDA、TG含量(P <0.05),显著提高小鼠肝脏中SOD、GSH含量(P <0.05)、ADH、ALDH活性(P <0.01),改善肝脏组织的病理状况,缓解细胞坏死、炎症等病理状态。氨基酸检测结果显示,F-Ⅰ组分及水提物中氨基酸组成全面,水提物中牛磺酸含量是F-Ⅰ组分的2倍左右。质谱结果表明F-Ⅰ组分、水提物分别包含15、20种主要肽片段。【结论】马氏珠母贝肉蛋白酶解超滤组分和水提物对急性ALD具备保护作用,其中F-Ⅰ组分、水提物效果更佳,其改善机制与增强机体抗氧化能力、促进乙醇代谢能力有关。
关键词(KeyWords): 马氏珠母贝;酶解液;水提物;急性酒精性肝损伤
基金项目(Foundation): 财政部和农业农村部国家现代农业产业技术体系资助(CARS-49);; 广东普通高等学校水产品高值化加工与利用创新团队项目(GDOU2016030503);; 海洋贝类营养健康食品关键技术及产业化(GDOU2017052606)
作者(Author): 王利霞,章超桦,高加龙,郑惠娜,曹文红,秦小明,陈建平
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