新诊断2型糖尿病患者血清视黄醇结合蛋白4水平与胰岛素抵抗及胰岛细胞功能的关系

目的探讨2型糖尿病患者血清视黄醇结合蛋白4（RBP4）水平与胰岛素抵抗、胰岛细胞功能之间的相关性。方法选择31例非肥胖2型糖尿病患者、32例肥胖2型糖尿病患者、50例健康对照者[男28例,女22例,年龄（54.27±8.75）岁],用酶联免疫吸附法（ELISA）测定血清RBP4水平,同时测定空腹胰岛素（FINS）浓度、空腹血糖（FPG）、甘油三酯（TG）、总胆固醇（TCH）、糖化血红蛋白（HbA1C）,测量身高、血压、体质量、腰围、腹围,并计算出体质量指数（BMI）和腰臀比（WHR）,并计算出脂肪含量（BF%）胰岛细胞分泌指数（MBCI）,用Homa公式计算胰岛素抵抗指数（HOMA-IR、HOMA-β）并进行相关分析和逐步回归分析。结果肥胖糖尿病组空腹血浆RBP4水平明显高于正常对照组（P〈0.05）;非胖糖尿病组与正常对照组RBP4水平比较差异无统计学意义（P〉0.05）;血清RBP4与BMI、BF%、WHR呈显著正相关,与MBCI、HOMA-IR呈显著正相关。多元逐步回归分析结果显示HOMA-IR是影响RBP4的最主要因素。结论 2型糖尿病患者特别是肥胖者胰岛素抵抗更为显著,RBP4参与胰岛素抵抗,可能是影响体内胰岛素抵抗的重要相关因素,且影响胰岛细胞的分泌功能。     

抵抗素研究的新进展

抵抗素是一种由脂肪细胞和巨噬细胞分泌的多肽类激素,起初作为肥胖和胰岛素抵抗或糖尿病间的关联物质被提出,最新证据提示抵抗素是一种前炎性细胞因子。过去几年,通过对抵抗素在肥胖、胰岛素抵抗、代谢和心血管等相关并发症模型中的结构、表达、分泌、调节和循环水平的分析,试图解释抵抗素在啮齿类动物和人体中的生理功能。本文综述了目前对抵抗素在这些条件下研究的最新进展。     

多囊卵巢综合征青年患者血清脂联素、胰岛素抵抗关系的研究

目的探讨多囊卵巢综合征（PCOS）青年患者血清脂联素（APN）、抵抗素（RST）水平与胰岛素抵抗（1R）的关系。方法PCOS组为38例青年PCOS患者,对照组为27例健康女性,两组中根据体重指数（BMI）分为肥胖组BMI（≥25kg／m^2）和非肥胖组（BMI〈25kg／m^2）。在月经第3～5天晨（PCOS闭经者B超检查无优势卵泡当天）留空腹血。采用酶联免疫吸附法（ELISA）测定血清APN和RST浓度,葡萄糖氧化酶法测定血糖浓度,化学发光法测定胰岛素浓度,根据后两者计算胰岛素敏感指数（ISI）。结果（1）肥胖组与非肥胖组空腹血糖水平比较,差异无统计学意义（P〉0．05）;（2）肥胖组与非肥胖组中,PCOS组的空腹胰岛素水平分别显著高于对照组（P〈0．05）;（3）肥胖组中,PCOS组血清APN和ISI水平显著低于对照组,血清RST水平显著高于对照组（P〈0．05）;（4）非肥胖组中,PCOS组血清APN和ISI水平显著低于对照组,血清RST水平显著高于对照组（P〈0．05）。结论（1）与对照组相比,青年PCOS患者血清中APN水平较低,RST水平较高,其中PCOS肥胖患者尤为明显。（2）青年PCOS患者血清中APN水平的下降和RST水平的升高可能与胰岛素敏感性及IR相关。     

The effect of omentectomy on the blood levels of adipokines in obese patients with endometrial cancer

ObjectiveTo investigate the blood levels of adipokines in obese patients with endometrial cancer who have and have not undergone omentectomy.MethodsBetween September 2017 and September 2019, the study recruited 54 patients with endometrial cancer. Measurements were taken of blood levels of human leptin, perilipin-1, adiponectin, adipolin, resistin, visfatin, and estrone preoperatively and postoperatively before adjuvant therapy or at the end of one month. The serum samples were separated by centrifugation for 10 mins at 3,000 revolutions/min, then stored at ?80 °C until assay.ResultsIn this prospective study, a total of 54 endometrial cancer patients were analyzed in two separate groups according to the omentectomy status. Comprehensive staging surgery with omentectomy and without omentectomy was performed in 26 patients and 28 patients, respectively. The age, body mass index, body fat index, waist circumference, and skin thickness values of the patients with and without omentectomy were found to be similar. No statistically significant difference was determined between the patients with and without omentectomy in respect of the blood level of the adipokines measured preoperatively. A strong statistically significant correlation was determined between the pre and postoperative levels of Human Leptin (p = 0.002), perilipin-1(p = 0.001), adipolin (p < 0.001), adiponectin (p < 0.001), resistin (p = 0.001), visfatin (p < 0.001), and estrone (p = 0.004) (r = ?0.43, ?0.47, 0.75, 0.84, ?0.47, - 0.58, ?0.41, respectively)ConclusionsOmentectomy affected the postoperative blood levels of adipokines in obese patients with endometrial cancer. As omentectomy may have some positive effects on metabolism in these patients, it may be considered during endometrial cancer surgery due to the possible positive metabolic effects.     

妊娠不同时期抵抗素的动态变化与胰岛素抵抗的关系

目的探讨妊娠不同时期抵抗素的动态变化及其与孕妇胰岛素抵抗的关系。方法选择2005年1月-2006年12月在我院门诊行产前检查的正常孕妇63例,其中妊娠早期19例(妊娠早期组),妊娠中期20例(妊娠中期组),妊娠晚期24例(妊娠晚期组);另选同期正常非孕妇女44例为对照组。采用酶联免疫吸附法检测各组妇女血清中抵抗素水平,葡萄糖氧化酶法测定空腹血糖水平、放射免疫法测定空腹胰岛素水平。结果妊娠早、中、晚期组及对照组妇女血清中抵抗素水平分别为(5.586±0.512)μg/L、(6.478±0.341)μg/L、(8.327±0.578)μg/L及(5.675±0.399)μg/L。妊娠早、中期与对照组相比,血清抵抗素浓度无显著性差异(P>0.05);晚孕组血清抵抗素显著高于正常组、早孕组以及中孕组(P<0.01)。孕妇血清抵抗素水平与胰岛素抵抗指数呈正相关,Pearson相关系数为0.69(P<0.05)。结论孕妇血清中抵抗素水平随孕期的增加逐渐升高,上述变化与孕妇的胰岛素抵抗有关。     

阻塞性睡眠呼吸暂停综合征与血清抵抗素的相关性研究

目的了解正常人、阻塞性睡眠呼吸暂停综合征（OSAS）患者血清抵抗素水平，探讨其与空腹血糖、体重指数的相关性．方法所有受试对象精确测量身高、体重，计算体重指数（BMI）．同步检测空腹血糖（FPC）、总胆固醇（TC）、甘油三脂（TG），采用酶联免疫吸附试验（ELISA）检测空腹血清抵抗素浓度．OSAS患者组经多导睡眠检测仪测定其睡眠呼吸暂停通气指数（AHI）及最低血氧饱和度（SaO2）．两组间比较用t检验，用Spearman和Pearson法进行相关分析．结果（1）OSAS患者组血清抵抗素、BMI、TC比正常对照组高，且差异有统计学意义（P〈0．05）；（2）血清抵抗素与BMI、FPG、TC正相关；（3）OSAS患者组BMI与AHI正相关、与SaO2负相关．结论OSAS患者血清抵抗素浓度升高；空腹血清抵抗素浓度与体重指数、空腹血糖、血清总胆固醇正相关，表明抵抗素在OSAS患者的脂、糖代谢中起一定作用．     

糖尿病、糖尿病合并冠状动脉性心脏病患者血清抵抗素水平的变化

目的观察2型糖尿病(Type2 Diabetes Mellitus,T2DM)、T2DM合并冠状动脉性心脏病(Coronary Artery Disease,CAD)患者血清抵抗素水平的变化,探讨抵抗素在上述疾病中的临床意义。方法选取T2DM患者40例,T2DM合并CAD患者38例,健康体检者34例,清晨空腹抽血,分离血清,采用ELISA法检测血清抵抗素含量。结果T2DM合并CAD组血清抵抗素含量([7.02±4.86)ng/ml]明显高于对照组[(2.52±1.88)ng/ml],P=0.0001;T2DM组血清抵抗素含量[(4.96±3.03)ng/ml]高于对照组[(2.52±1.88)ng/ml],P=0.04。T2DM合并CAD组血清抵抗素比单纯T2DM组高(P=0.011)。结论T2DM、T2DM合并CAD患者血清抵抗素明显增高,提示血清抵抗素与T2DM、T2DM合并CAD等具有代谢综合征表现的心血管疾病密切相关,推测抵抗素可能参与了胰岛素抵抗及动脉粥样硬化的进程。     

血清抵抗素与冠状动脉粥样硬化关系研究

目的：探讨人血清抵抗素水平与冠状动脉粥样硬化（AS）病变程度的关系。方法：根据冠状动脉造影结果和临床表现，将82例临床可疑的冠心病患者进行分组，用酶联免疫法检测血清抵抗素水平，同时监测患者血脂、血压、血糖及体重指数（BMI）等相关指标。结果：（1）动脉粥样硬化病变患者血清抵抗素水平[2．09ng／ml（0．38～5．2ng／ml）]与阴性对照[1．43ng／ml（0．34～4．02）ng／ml]相比差异有显著性，P〈0．05。（2）相关分析显示空腹抵抗素水平与腰臀比、体重指数呈显著正相关（分别为r=0．38。P〈0．05；1=0．43，P〈0．01）；而与收缩压、舒张压、总胆周醇、甘油三酯、低密度脂蛋白胆固醇（LDL-C）、血糖无相关性（P〉0．05）。与高密度脂蛋白胆固醇（HDL-C）呈显著负相关（r=-0．33，P〈0．05）。结论：高抵抗素血症可能是动脉粥样硬化发生发展的独立危险因素。     

Serum resistin levels in women taking combined oral contraceptives containing desogestrel or gestodene

Resistin is a hormone secreted by adipose tissue that could be involved in the development of insulin resistance. Previous studies confirmed that endogenous sex steroids may influence serum resistin concentration in women. The aim of our study was to investigate the influence of combined oral contraceptives containing desogestrel or gestodene on circulating levels of resistin. Fifty-three women were enrolled in the study. Thirteen patients received 20 μg ethinylestradiol/150 μg desogestrel, 15 women were treated with 20 μg ethinylestradiol/75 μg gestodene, 11 with 30 μg ethinylestradiol/150 μg desogestrel and 14 with 30 μg ethinylestradiol/75 μg gestodene. Blood samples for estimation of serum resistin and insulin levels were drawn before administration of oral contraceptive and after 6 cycles of therapy. We found that serum resistin level remained unchanged in women receiving ethinylestradiol/desogestrel and was reduced in women treated with formulations containing gestodene. We conclude that ethinylestradiol combined with desogestrel or gestodene is unlikely to induce insulin resistance through resistin pathway.     

维持性血透患者高抵抗素血症及其意义探讨

目的:观察维持性血透患者血浆抵抗素(Resistin)水平,探讨与微炎症状态的关系.方法:选择我院肾内科病情稳定的维持性血透患者73例,健康志愿者20例,ELISA法测研究对象的空腹IL-6、TNF-α、血抵抗素水平与免疫比浊法测定CRP,并测定血脂、白蛋白、空腹血糖及胰岛素水平,采用空腹血糖×胰岛素/22.5计算胰岛素抵抗(IR)值.结果:维持性血透患者血浆抵抗素水平较正常组明显升高,为(40.15±22.46)ug/L vs(11.78±6.29)ug/L(P＜0.01),同时CRP、IL-6、TNF-α也较正常组明显升高,分别为(4.56±1.46)mg/L vs (2.10±0.67)mg/L (P＜0.01),(90.19±32.04)ng/L vs(49.30±28.12)ng/L(P＜0.01),(115.16±90.35)ng/L vs (48.21±36.54)ng/L(P＜0.01),Spearmen相关分析显示抵抗素与TG、CRP呈正相关(r=0.271,0.246,P＜0.05).结论:维持性血透患者抵抗素水平明显升高且与微炎症状态有关,抵抗素可能在ESRD患者心血管损伤中起作用.