天津医药 ›› 2016, Vol. 44 ›› Issue (11): 1326-1329.doi: 10.11958/20160404

• 内分泌专题 • 上一篇    下一篇

肥胖症患者脂肪组织中的 SIRT1 mRNA 和蛋白 表达水平及临床意义

李莉 1, 赵艳丽 2, 刘传亮 3, 于汪营 4   

  1. 1 河南省平顶山市第二人民医院内分泌科 (邮编 467000); 2 郑州大学第一附属医院内分泌科; 3 河南省平顶山市第二人民医院 普外科, 4 病理科
  • 收稿日期:2016-05-24 修回日期:2016-08-25 出版日期:2016-11-15 发布日期:2016-11-15
  • 通讯作者: 李莉 E-mail:lili160509@sina.com
  • 作者简介:李莉 (1978), 女, 本科, 主治医师, 主要从事内分泌科临床研究

The expression levels and clinical significance of SIRT1 mRNA and protein in adipose tissue of obese patients

LI Li1, ZHAO Yanli2, LIU Chuanliang3, YU Wangying4   

  1. 1 Department of Endocrinology, the Second People’ s Hospital of Pingdingshan City, Pingdingshan 467000, China; 2 Department of Endocrinology, the First Affiliated Hospital of Zhengzhou Universiti, Henan; 3 General Surgery, 4 Department of Pathology, the Second People’ s Hospital of Pingdingshan City
  • Received:2016-05-24 Revised:2016-08-25 Published:2016-11-15 Online:2016-11-15

摘要: 目的 探讨肥胖症患者脂肪组织中的沉默信息调节因子 1 (SIRT1)mRNA 和蛋白表达水平及其在肥胖症 治疗中的临床意义。方法 选取接受肥胖治疗的患者 105 例, 以体质量指数 (BMI) 分为肥胖症组 (BMI≥23 kg/m2) 和 对照组 (18.5 kg/m2≤BMI<23 kg/m2); 取 2 组患者腹膜脂肪组织。采用实时荧光定量 PCR 法检测 2 组患者脂肪组织 SIRT1 mRNA 表达水平; 采用酶联免疫吸附试验(ELISA)检测脂肪组织 SIRT1 的蛋白表达水平。并分析 2 组 SIRT1 蛋白表达水平与 BMI、 总胆固醇(TC)、 三酰甘油(TG)、 空腹血糖(FPG)、 空腹胰岛素(FINS)以及胰岛素抵抗指数 (HOMA-IR) 的相关性。结果 肥胖症组 SIRT1 mRNA 和蛋白表达水平均低于对照组 (P<0.05)。肥胖症组脂肪组织 中 TC、 TG、 FPG、 FINS 及 HOMA-IR 均高于对照组(P<0.05)。SIRT1 的蛋白表达水平与总 TC、 TG、 FPG、 FINS 及 HOMA-IR 呈负相关 (r 分别为-0.391、 -0.941、 -0.184、 -0.215 及-0.990, 均 P<0.05)。结论 肥胖症患者腹膜脂肪组 织中 SIRT1 mRNA 和蛋白表达水平较非肥胖患者均明显下降, 且 SIRT1 蛋白表达水平与肥胖相关指标呈相关性, 对 临床治疗肥胖症具有一定的指导作用。

关键词: 肥胖症, 皮下脂肪, 腹部, 人体质量指数, RNA, 信使, 血脂异常, 血糖, 沉默信息调节因子 1

Abstract: Objective To explore expression levels of SIRT1 mRNA and protein in adipose tissue of obese patients, and its clinical significance in the treatment of obesity. Methods A total of 105 patients in our hospital were selected and divided into obesity group (BMI≥23 kg/m2) and control group (18.5 kg/m2 ≤BMI<23 kg/m2) according to body mass index (BMI). SIRT1 mRNA expression levels in adipose tissue (collected from peritoneum) were detected by quantitative PCR method in two group. SIRT1 protein expression levels of adipose tissue were detected by enzyme- linked immunosorbent (ELISA) in two groups. The relationships of SIRT1 expression, BMI, total cholesterol (TC), triglyceride (TG), fasting plasma glucose (FPG) and insulin resistance (HOMA- IR) were analyzed between two group. Results SIRT1 mRNA and protein levels were significantly lower in obesity group than those of normal group (P<0.05). The values of TC, TG, FPG, FINS and HOMA-IRinadiposetissueweresignificantlyhigherinobesitygroupthanthoseofnormalgroup(P<0.05).Theproteinexpression level of SIRT1 was positively correlated with values of TC, TG, FPG, FINS and HOMA-IR (r=-0.391, -0.941, -0.184, 0.215 and -0.990, P<0.05). Conclusion SIRT1 mRNA and protein expression levels in adipose tissue are significantly reduced in obesity patients than those of control group. There is a close relationship between SIRT1 protein level and obesity index, which has certain guidance for clinical treatment of obesity.

Key words: obesity, subcutaneous fat, abdominal, body mass index, RNA, messenger, dyslipidemias, blood glucose, silent information regulator 1