摘要
目的:观察甘氨酸(Gly)对正常饮食和高脂饮食小鼠体重及血脂代谢的影响。方法:健康成年昆明种小鼠80只,雌雄各半,随机分4组:对照组、高脂饮食组(HF)、Gly组、Gly+HF组,按各组要求分别给予正常饲料和高脂饲料喂养。以Gly等药物定量腹腔注射处理。连续12d,观察体重变化,实验末取血测定血脂4项(TC、TG、HDL-C、LDL),摘取雄性小鼠附睾周围脂肪垫和肾周脂肪垫,摘取雌性鼠腹部脂肪垫和肾周脂肪垫,称重并记录,留取肝脏组织并观察病理变化。结果:HF组体重明显低于对照组,体脂含量无明显差异;Gly组的体重和体脂含量均明显低于对照组;Gly+HF组体重和体脂含量均明显低于HF组;Gly组血清TC和TG的含量显著低于对照组;Gly+HF组血脂4项与HF组相比没有显著差异;光镜下HF组肝组织可见弥漫性脂肪变性,Gly+HF组肝组织脂肪变性少,肝细胞内脂滴小且少。结论:Gly对正常饮食和高脂饮食的小鼠都有降低体重和体脂含量的作用,并能降低血脂,有预防肝脂肪变的作用。
AIM: To study the effect of glycine on body weight and lipid metabolism in mice. METHODS: Mice were randomly divided into four groups, control, high-fat diet group (HF), glycine group (Gly), and glycine treatment group (Gly+HF). The mice were fed with normal diet and high-fat diet for 12 days, respectively, and then were treated with glycine solution by intraperitoneal injection. Finally, the serum was collected to measure serum lipid, epididymal fat-pads, pararenal fat-pads and abdominal fat-pads were taken out to weight. Moreover, pathologic changes in liver were observed. RESULTS: The body weight of HF group was obviously lower than that in control; the body weight and adipose tissue content of Gly group were obviously lower than those in control; the body weight and adipose tissue content of Gly+HF group were obviously lower than those in HF group; the levels of TC and TG in Gly group were obviously lower than those in control; there was no statistical difference in serum lipid between Gly+HF and HF groups. In addition, marked hepatic steatosis in HF group, and slight hepatic steatosis in Gly+HF group were found. CONCLUSION: Gly can decrease the body weight and adipose tissue content and serum lipid in normal diet and high-fat diet mice, and it also can prevent hepatic steatosis.
出处
《中国病理生理杂志》
CAS
CSCD
北大核心
2005年第6期1143-1146,共4页
Chinese Journal of Pathophysiology
基金
广州市科技计划项目(No.2004Z3-E4081)
国家自然科学基金资助项目(No.30470718)
关键词
甘氨酸
膳食脂肪类
体重
脂质代谢
肝脂肪变
Glycine
Dietary fats
Body weight
Lipid metabolism
Hepatic steatosis
