首页> 外文期刊>The Journal of Nutritional Biochemistry >L-carnitine increases liver alpha -tocopherol and lowers liver and plasma triglycerides in aging ovariectomized rats.
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L-carnitine increases liver alpha -tocopherol and lowers liver and plasma triglycerides in aging ovariectomized rats.

机译:左旋肉碱可增加去卵巢大鼠的肝脏中α-生育酚的含量,并降低肝脏和血浆甘油三酯的含量。

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The objective of this study was to determine whether dietary L-carnitine can influence the status of alpha -tocopherol, retinol and selected lipid parameters in aging ovariectomized rats, an animal model for the menopausal state. Fourteen Fisher-344 female rats 18 months old were acclimated for 4 weeks and ovarectomized. Seven rats per treatment were assigned to either a control group fed ad libitum AIN-93M diet or a carnitine group fed the same diet supplemented with L-carnitine. After an 8-week feeding period, blood and selected tissues were taken for analyses. No differences were noted in food intake, body weight, or organ weights due to L-carnitine. Dietary carnitine significantly increased liver alpha -tocopherol and tended to increase plasma alpha -tocopherol (P<.09). No changes in alpha -tocopherol were observed in other tissues including the brain, lungs and retroperitoneal fat. Retinol levels in plasma and tissues were not affected by supplemental L-carnitine. Significant decreases in liver and plasma triglyceride (TG) levels were noted, suggesting increased utilization of fatty acids. No differences were observed in the fatty acid profile of tissues. The results provide evidence that dietary supplementation of L-carnitine enhances the alpha -tocopherol status and improves the utilization of fat leading to lowering of the liver and plasma levels of TG in aging ovariectomized rats. Whether supplemental L-carnitine may be of benefit to postmenopausal women in lowering plasma TG and improving the antioxidant status remains to be studied.
机译:这项研究的目的是确定饮食中的左旋肉碱是否可以影响卵巢切除的衰老大鼠(一种绝经状态的动物模型)中α-生育酚,视黄醇和某些脂质参数的状态。将14只18个月大的Fisher-344雌性大鼠适应4周并进行卵巢切除。每次治疗将7只大鼠分配为随意饲喂AIN-93M饮食的对照组或饲喂相同饮食并补充L-肉碱的肉碱组。喂食8周后,抽取血液和选定的组织进行分析。由于左旋肉碱,在食物摄入,体重或器官重量方面未见差异。饮食中的肉碱会显着增加肝脏α-生育酚含量,并倾向于增加血浆α-生育酚含量(P <.09)。在包括脑,肺和腹膜后脂肪在内的其他组织中未观察到α-生育酚的变化。血浆和组织中的视黄醇水平不受补充左旋肉碱的影响。注意到肝脏和血浆甘油三酯(TG)水平显着下降,表明脂肪酸的利用增加。在组织的脂肪酸谱中未观察到差异。结果提供了证据,饮食中补充左旋肉碱可增强卵巢切除的衰老大鼠的α-生育酚状态并提高脂肪利用率,从而降低肝脏和血浆TG含量。补充左旋肉碱是否可能对绝经后妇女降低血浆TG和改善抗氧化剂状态有益。

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