[1]叶 春,房 宇.非酒精性脂肪肝大鼠血清氨基酸谱的改变及分析[J].南京师范大学学报(自然科学版),2016,39(01):90.
 Ye Chun,Fang Yu.Changes and Analysis of Serum Free Aminogram in Non-AlcoholicFatty Liver Disease(NAFLD)Rats[J].Journal of Nanjing Normal University(Natural Science Edition),2016,39(01):90.
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非酒精性脂肪肝大鼠血清氨基酸谱的改变及分析()
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《南京师范大学学报》(自然科学版)[ISSN:1001-4616/CN:32-1239/N]

卷:
第39卷
期数:
2016年01期
页码:
90
栏目:
生命科学
出版日期:
2016-03-31

文章信息/Info

Title:
Changes and Analysis of Serum Free Aminogram in Non-AlcoholicFatty Liver Disease(NAFLD)Rats
作者:
叶 春1房 宇2
(1.南京师范大学体育科学学院,江苏 南京 210023)(2.南京大学医学院附属鼓楼医院急诊科,江苏 南京 210093)
Author(s):
Ye Chun1Fang Yu2
(1.Department of Physical Education,Nanjing Normal University,Nanjing 210023,China)(2.Emergency Center of Gulou Hospital Affiliated to Medical College of Nanjing University,Nanjing 210093,China)
关键词:
非酒精性脂肪肝血清氨基酸
Keywords:
non-alcoholic fatty liver diseaseserumamino-acids
分类号:
G804.5
文献标志码:
A
摘要:
通过分析高脂饲料喂养导致的非酒精性脂肪肝(NAFLD)大鼠血清中氨基酸谱的变化,初步探讨非酒精性脂肪肝对机体氨基酸代谢的影响. 20只大鼠随机分为高脂组和正常组,高脂组大鼠采用高脂饲料喂养. 24周后,两组大鼠取肝脏作病理分析,取血测定血液中ALT、AST、GLU、chol、TG、HDL、LDL、CP,并采用HPLC测定血清中游离氨基酸谱,两组进行对照分析.高脂组大鼠肝脏出现明显的脂肪性病变,其血清中除牛磺酸较正常组显著下降(p<0.01)以外,其余氨基酸均较正常组升高.其中,天冬酰胺、鸟氨酸、酪氨酸、瓜氨酸、色氨酸、苯丙氨酸显著升高(p<0.001);天冬氨酸、丝氨酸、组氨酸、甘氨酸、苏氨酸、精氨酸、谷氨酰胺、丙氨酸、谷氨酸、缬氨酸、蛋氨酸、异亮氨酸、亮氨酸、赖氨酸升高,但没有显著性差异(p>0.05);支链氨基酸和芳香族氨基酸明显增高(p<0.05),Fischer(支/芳)明显下降(p<0.05).非酒精性脂肪肝大鼠血清中氨基酸升高可能与胰岛素抵抗有关,Fischer(支/芳)比值下降与肝细胞损伤有关.而血清中鸟氨酸、瓜氨酸和牛磺酸浓度的变化具有特征性,在临床上对NAFLD的诊断和预后以及进一步研究其机理有潜在的价值.
Abstract:
To elucidate the characteristic changes of serum amino-acid metabolism in NAFLD rats. Twenty SD rats were randomly divided into two groups,standard diet fed group(con)and high fat diet fed group(HF). The whole duration of the study were 24 weeks,the serum concentration of free amino-acids and ALT,AST,Glu,Chol,TG,HDL,LDL,CP,the morphological changes of liver was detected. The HF rats exhibited severe steatohepatitis;the Asn,Cir,Cit,Tyr,Trp and Phe in the serum of HF group were significantly higher than that in the control group(p<0.001),the levels of most other amino acids tended to increased although there was no significant difference compared with control. Thus the Fischer(BCAA/AAA)ratio was reduced(p<0.05).The Tau was significantly lower than that in the control(p<0.001). Our results suggested the increase of HF rats serum free amino acids were related to the insulin resistance and the decreased BACC/AAA was related to the liver cell injury degree. The changed level of serum Cit,Cir and Tau may have more means as potential marker for the early diagnosis of NAFLD and in-depth research.

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备注/Memo

备注/Memo:
收稿日期:2013-04-07. 
基金项目:江苏省高校自然科学研究面上项目(09KJB340001). 
通讯联系人:叶春,博士,讲师,研究方向:运动生化. E-mail:12144@njnu.edu.cn
doi:10.3969/j.issn.1001-4616.2016.01.016
更新日期/Last Update: 2016-03-30