多囊卵巢综合征患者的胰岛素抵抗

多囊卵巢综合征（peOS）是女性常见的生殖功能障碍性疾病,主要表现为卵巢的雄激素过多及无排卵,其发生率占生育年龄妇女的5％－10％卜］。此外,PCOS患者也存在糖代谢异常,主要表现为胰岛素抵抗（IR）及代偿性高胰岛素血症,其糖耐量低减的发生率也占生育年龄妇女的10％［'］。现就关于poOS的IR基础及临床方面研究进展作一综述。一、胰岛素作用及IR（一）胰岛素作用的细胞机理胰岛素是人体最重要的代谢激素,也是唯一降糖激素。胰岛素的生物学作用主要是调节糖代谢和脂代谢,还通过调控基因表达和蛋白质合成等进一步影响相应器官的…     

多囊卵巢综合征患者胰岛素抵抗与脂代谢的关系

目的:探讨多囊卵巢综合征(PCOS)患者胰岛素抵抗(IR)、肥胖及血脂代谢的关系。方法:把PCOS病人分成IR组(15例),非IR组(25例),另设正常育龄妇女为对照组(20例)三组,检测空腹血甘油三脂(TG)、总胆固醇(TC)、载脂蛋白A1(ApoA1)、载脂蛋白B(ApoB)、高密度脂蛋白胆固醇(HDL-C)、低密度脂蛋白胆固醇(LDL-C)、葡萄糖耐量试验(OGTT)、胰岛素(INS)释放试验,并计算体重指数(BMI)和腰臀比(WHR)。结果:(1)BMI、WHR三组间差别有显著意义(P<0.05,P0.05),后者三组间差别有显著意义(P<0.05)。结论:PCOS病人的IR与肥胖及脂代谢关系密切,使发生心血管疾病风险增加。     

多囊卵巢综合征胰岛素抵抗患者的临床特征

目的探讨多囊卵巢综合征(polycystic ovary syndrome PCOS)胰岛素抵抗患者的临床表现特征.方法选择诊断为PCOS、及糖负荷后60 min或120 min血胰岛素≥160 mIU/L的患者37例为胰岛素抵抗PCOS Ⅰ组.随机选择胰岛素及糖负荷60 min、120 min血胰岛素正常的PCOS患者37例为对照组PCOSⅡ组.对比两组PCOS患者早卵泡期或闭经状态下各项性激素、卵巢体积、体重指数(body mass index BMI).结果①PCOS Ⅰ组的平均睾酮(testosteroneT)值、雄烯二酮(androstenedione A)值、BMI均显著高于PCOSⅡ组(P＜0.05).②PCOS Ⅰ组中高水平睾酮、特别是高水平雄烯二酮及肥胖患者的构成比显著高于PCOSⅡ组(P＜0.05);而高LH患者则显著低于PCOSⅡ组(P＜0.05).结论在胰岛素抵抗的PCOS患者中,几乎全部伴有雄烯二酮的异常升高,高雄激素血症是其特有的临床特征.胰岛素抵抗并非PCOS共同表现特征,它在一定程度上与体重有一定的依存关系,提示对PCOS伴有肥胖的患者特别要注意胰岛素抵抗的可能.     

胰岛素基因多态性与多囊卵巢综合征的相关性研究

目的:研究胰岛素(INS)基因多态性与多囊卵巢综合征(PCOS)发病间的相关性。方法:PCOS(216例)和非PCOS(192例,正常对照组)患者记录月经周期,计算BMI,检测其血清生殖激素,采用PCR法,分析INS基因多态性。结果:①与其他人种相比,中国人INS中T等位基因频率较低(7.3%)。②PCOS患者INS的A/A,A/T,T/T基因型分布(分别为0.894,0.097,0.009)与非PCOS人群的分布(分别为0.859,0.135,0.005)无显著差异。③PCOS组中,基因型A/T患者总睾酮(T)值显著高于其他2种基因型的T值,而初潮年龄、BMI和其他血清生殖激素值在各基因型间无显著差异。正常对照组中,BMI及生殖激素在各基因型间均无显著差异。结论:INS-23/HphⅠ单核苷酸多态性与中国汉族女性PCOS发病无相关性,但A/T等位基因的表达可能会影响雄激素水平。     

脂质蓄积指数较腰围更好反映多囊卵巢综合征患者的胰岛素抵抗

目的:比较多囊卵巢综合征(PCOS)人群脂质蓄积指数(LAP)和腰围(WC)与胰岛素抵抗(IR)的相关性。方法:纳入121例PCOS患者和115例正常对照,测量人体参数及血液代谢指标,行75 g口服葡萄糖耐量试验,对其中20例对照及90例PCOS患者行高胰岛素-正葡萄糖钳夹术,并计算HOMA2-IR及LAP。结果:PCOS组LAP、WC等较对照组明显增高(P<0.05),胰岛素敏感性明显降低(P<0.05);匹配WC和年龄后,PCOS组LAP仍明显高于对照组(P<0.01),胰岛素敏感性明显低于对照组(P<0.05);与WC相比,LAP与M值(r=-0.66 vs r=-0.68,P<0.01)及HOMA2-IR(r=0.49 vs r=0.55,P<0.01)间关系更密切,校正WC后,LAP仍与M值(r=-0.37,P<0.01)及HOMA2-IR(r=0.26,P<0.01)相关;二项Logistic回归显示,高LAP患者发生IR的风险是正常LAP患者的6.05倍(OR=6.05,95%CI:1.67,21.90,P<0.05)。结论:在PCOS人群中,LAP与胰岛素敏感性相关,较WC更好地反映IR。     

多囊卵巢综合征的胰岛素抵抗

胰岛素抵抗 (ｉｎｓｕｌｉｎｒｅｓｉｓｔｅｎｃｅ ,ＩＲ)是多囊卵巢综合征(ｐｏｌｙｃｙｓｔｉｃｏｖａｒｙｓｙｎｄｒｏｍｅ ,ＰＣＯＳ)患者主要和常见的代谢紊乱。多囊卵巢综合征和胰岛素抵抗是两种复杂的、牵涉广泛病理生理变化的病症。自 1980年 ,Ｂｕｒｇｈｅｎ[1] 等发现ＰＣＯＳ与高胰岛素血症相关后 ,对ＰＣＯＳ的胰岛素抵抗进行了广泛和深入的研究[2～ 4] ,本文对此进行简要的综述。1　胰岛素抵抗的概念1 1　胰岛素抵抗的定义胰岛素抵抗的定义目前仍不完全统一。根据美国糖尿病协会 (ＡｍｅｒｉｃａｎＤｉａｂｅｔｅｓＡｓｓｏｃ…     

PCOS患者卵巢胰岛素抵抗的发生机理探讨

目的:探讨胰岛素抵抗/高胰岛素血症在PCOS生殖功能障碍中的作用。方法:收集行IVF-ET治疗的11例PCOS患者(PCOS组)和15例排卵正常的输卵管性不孕患者(对照组)促排卵后卵巢黄素化颗粒细胞,行体外培养,分别用不同浓度胰岛素处理细胞48h,采用RT-PCR和Westernblot检测黄素化颗粒细胞胰岛素受体底物(IRS)-1和IRS-2mRNA及蛋白的表达。采用放射免疫法检测血清性激素及空腹血清胰岛素(FIN)水平;采用葡萄糖氧化酶法测定空腹血糖(FPG)水平;计算胰岛素抵抗指数(HOMA-IR)。结果:①PCOS患者血清LH、LH/FSH、T、FIN及HOMA-IR均明显高于对照组(P<0.05);②0mU/ml胰岛素时,PCOS组黄素化颗粒细胞IRS-1mRNA及蛋白的表达水平明显高于对照组(P<0.05),而IRS-2mRNA及蛋白的表达水平较对照组明显降低(P<0.05);③10mU/ml胰岛素对二组患者黄素化颗粒细胞IRS-1和IRS-2mRNA及蛋白的表达均无影响(P>0.05);④100mU/ml或1000mU/ml胰岛素作用后,二组患者IRS-1mRNA及蛋白的表达水平均明显增高(P<0.05),而IRS-2mRNA及蛋白的表达水平均明显降低(P<0.05)。结论:PCOS患者胰岛素抵抗/高胰岛素血症通过提高卵巢颗粒细胞IRS-1的表达,降低IRS-2的表达参与患者卵巢生殖功能障碍的发生。     

多囊卵巢综合征胰岛素抵抗与瘦素关系的探讨

目的　探讨多囊卵巢综合征 (PCOS)妇女血清瘦素 (leptin)水平与胰岛素抵抗 (IR)的关系 ,为研究PCOS的发病机制和治疗新途径提供理论依据。方法　 5 1例PCOS患者及 2 3例正常妇女均测定体重指数(BMI)、腰臀比 (WHR)、血清生殖激素及leptin水平 ,同期行口服糖耐量 (OGTT)及胰岛素 (Ins)释放试验 ,OGTT示IR者给予二甲双胍 (1 5 g/d)治疗 3个月后复测上述指标。 结果　PCOS患者血清leptin水平高于相应对照组 ,且IR组显著高于NIR组 ;PCOS患者经二甲双胍治疗后血清Ins水平显著下降 ,胰岛素敏感指数 (ISI)显著上升 ,同时leptin水平下降。相关分析表明 ,PCOS患者血清leptin与BMI、WHR及T显著正相关 ,与ISI负相关 (r=0 6 7,P <0 0 1) ,多元回归显示leptin中有BMI、ISI引入。结论　PCOS患者血清leptin水平升高与胰岛素敏感性相关 ;二甲双胍治疗PCOS患者可提高其胰岛素敏感性 ,降低血清leptin水平。     

多囊卵巢综合征患者组织胰岛素抵抗

多囊卵巢综合征（PCOS）是一种发病多因性、临床表现呈多态性的内分泌综合征。其发病原因至今尚未阐明，近年大量研究表明胰岛素抵抗（IR）与PCOS之间关系密切，胰岛素抵抗可能是PCOS发生发展的主要因素之一。胰岛素作用的经典靶器官是肝脏、脂肪及肌肉。目前，对PCOS患者组织胰岛素抵抗的研究主要有脂肪、肌肉、卵巢及子宫内膜．对其作一综述。     

多囊卵巢综合征患者组织胰岛素抵抗

多囊卵巢综合征(PCOS)是一种发病多因性、临床表现呈多态性的内分泌综合征.其发病原因至今尚未阐明,近年大量研究表明胰岛素抵抗(IR)与PCOS之间关系密切,胰岛素抵抗可能是PCOS发生发展的主要因素之一.胰岛索作用的经典靶器官是肝脏、脂肪及肌肉.目前,对PCOS患者组织胰岛素抵抗的研究主要有脂肪、肌肉、卵巢及子宫内膜,对其作一综述.     

部分卵母细胞浆内单精子注射的临床结局及影响受精率的相关因素分析 #br#

目的分析中国南方多囊卵巢综合征（polycystic ovary syndrome,PCOS）患者中胰岛素抵抗的发生情况及其与代谢综合征（metabolic syndrome,MetS）发生的相关性。方法回顾性分析中山大学孙逸仙纪念医院2004年1月至2008年10月初诊的578例PCOS患者各表征胰岛素抵抗指标的发生率,及其与代谢综合征发生的关系。结果 PCOS患者中,332例（57.4%）稳态模型测定（HOMA-IR）〉75th,133例（23.0%）空腹胰岛素（FIN）〉95th,73例（12.6%）胰岛素释放实验2h胰岛素（2h-INS）〉150mU/L,49例（8.5%）FIN和2h-INS同时超标,157例（27.2%）发生高胰岛素血症（HIN）,FIN和/或2h-INS超标。FIN升高、2h-INS升高、HIN和HOMA-IR超标者,代谢综合征发生率分别为40.6%、41.1%、39.5%和26.8%。与指标正常者比较,其发生代谢综合征的风险明显增加（P〈0.001）。结论应用不同表征胰岛素抵抗的指标得到的PCOS患者胰岛素抵抗的发生率存在差异,但是存在任一胰岛素抵抗指标异常的患者合并代谢综合征的风险显著高于无高胰岛素血症及HOMA-IR正常者。因此,判断和纠正PCOS患者的胰岛素抵抗对于预防代谢综合征的发生有临床意义。     

吡格列酮对多囊卵巢综合征伴胰岛素抵抗患者的疗效观察

目的了解吡格列酮对多囊卵巢综合征伴胰岛素抵抗的疗效。方法选择2003年1月～2005年10月于我院就诊的多囊卵巢综合征伴胰岛素抵抗的患者为研究对象，予吡格列酮口服12周。检测治疗前后BMI、血脂、外周胰岛素敏感度（SI）、FSH、LH、游离睾酮、硫酸脱氢表雄酮（DHEAs）、雄烯二酮、性激素结合球蛋白（sHBG）等指标。结果①BMI治疗前后差异无显著性（P〉0．05），血胆固醇、甘油三酯、低密度脂蛋白于治疗后均降低（P〈0．05），SI于治疗后升高（P〈0．05）；②FSH治疗前后差异无显著性（P〉0．05），LH、游离睾酮、DHEAS、雄烯二酮于治疗后均下降（P〈0．05），SHBG于治疗后升高（P〈0．05）。结论吡格列酮可改善多囊卵巢综合征患者的胰岛素抵抗，进而改善高雄激素症，恢复排卵月经。     

The correlation of plasma homocysteine with insulin resistance in polycystic ovary syndrome

AIM: This study aims to investigate the existence of any relationship between homocysteine levels and insulin resistance in Turkish women with polycystic ovary syndrome. METHODS: A case-controlled, cross-sectional, observational study was undertaken in a total of 94 infertile Turkish women who required professional help in the Department of Infertility of Dr Zekai Tahir Burak Women's Health Research and Education Hospital. The correlation between serum homocysteine with age, body mass index, hormone profile, fasting insulin and glucose concentrations and insulin resistance were examined in patients with polycystic ovary syndrome and the results were compared to those of women with normal ovaries, who served as a control group. RESULTS: The mean serum fasting glucose and insulin levels, thus insulin resistance index of women with polycystic ovary syndrome, were significantly higher than those of the control subjects. The mean serum homocysteine levels were significantly higher in women with polycystic ovary syndrome than those in the control group. A positive correlation was detected between the mean homocysteine, the insulin resistance index determined by homeostasis model assessment and the fasting insulin levels in polycystic ovary syndrome patients. CONCLUSIONS: Serum homocysteine levels are elevated in women with polycystic ovary syndrome, and this elevation is associated with the serum insulin level rather than androgen excess. The intense treatment of hyperhomocysteinemia in women with polycystic ovary syndrome might improve reproductive outcome and contribute to protection from cardiovascular risks.     

Paraoxonase-1 is not affected in polycystic ovary syndrome without metabolic syndrome and insulin resistance,but oxidative stress is altered

Paraoxonase-1 (PON1) activity is decreased in polycystic ovary syndrome (PCOS) having metabolic syndrome (MetS) or insulin resistance (IR). We aimed to assess PON1 activity and oxidative stress in PCOS without MetS or IR. Metabolic and hormonal parameters, high-sensitive C-reactive protein (hs-CRP), oxidative stress parameters (total antioxidant status (TAS), total oxidative stress (TOS), oxidative stress index (OSI), lipid hydroperoxide (LOOH), total free sulfhydryl (?SH) groups), PON and arylesterase were analyzed in 30 normal weighed patients with PCOS without MetS or IR and 20 normal controls. Hs-CRP, PON, arylesterase, and TAS levels of PCOS and control groups were similar. LOOH, TOS, and OSI of PCOS group were higher than in the controls (p?<?0.05; p?<?0.001, and p?<?0.001, respectively). ?SH group levels showed a positive correlation with free testosterone (fT). TOS positively correlated with free androgen index (FAI), body mass index (BMI), waist-to-hip ratio (WHR), LOOH, and OSI. This study showed that oxidative stress is increased in PCOS even in the absence of MetS or IR. PON1 activity appears not to be affected in PCOS without MetS and IR. Several metabolic and antropometric risk factors may aggravate this altered oxidative state in PCOS.     

Relationship between insulin resistance and gonadotropin dissociation in obese and nonobese women with polycystic ovary syndrome

OBJECTIVE: To test the interdependence between insulin resistance (IR) and gonadotropin dissociation (GD) in polycystic ovary syndrome (PCOS). DESIGN: Cross-sectional prospective study. SETTING: Clinical research center. PATIENT(S): Thirty-two PCOS patients aged 19-34 years; 16 obese (BMI > or = 27) and 16 nonobese (BMI < 27). INTERVENTION(S): A 75-g oral glucose tolerance test (OGTT) and a 100-microg i.v. GnRH test were performed on different days. Blood was taken at 0, 30, 60, 90, 120, and 180 minutes in each test. Serum glucose, insulin, LH, and FSH were measured. MAIN OUTCOME MEASURE(S): Area under the curve was calculated for glucose, insulin, and glucose-to-insulin ratio (GIR), and for LH, FSH, and LH-FSH ratio. RESULT(S): Glucose, insulin, and GIR were not modified significantly during the GnRH test, nor LH, FSH and LH-FSH ratio throughout the OGTT. There were no significant differences in GIR response of patients with and without GD, nor in LH-FSH ratio of patients with and without IR, after OGTT and GnRH test. However, obese patients with IR had a significantly larger (P<.04) area under the curve for LH-FSH ratio than those without IR after GnRH test, but not after OGTT test. CONCLUSION(S): Insulin resistance and GD do not appear to be related events in PCOS, suggesting that each one might be determined by different genetic disorders. However, IR can affect GD after chronic stimulation in obese patients.     

肌肉因子鸢尾素与多囊卵巢综合征关系的研究进展

新近发现的肌肉因子鸢尾素(irisin)是由FDNC5剪切修饰形成,鸢尾素/FDNC5的表达受PGC-1α的调控,鸢尾素可以促进白色脂肪向棕色脂肪转化,具有明显地改善胰岛素抵抗的作用。PCOS患血清鸢尾素水平较正常人明显升高,胰岛素增敏药物的干预使其降低。运动会刺激PCOS患者鸢尾素的分泌,不同的运动强度对鸢尾素分泌的调节作用不同。     

Anti-Mullerian hormone and insulin resistance in polycystic ovary syndrome

Introduction: Polycystic ovary syndrome (PCOS) is a prevalent disease affecting women of reproductive age. It may be associated with metabolic disorders such as insulin resistance (IR) and obesity. The anti-Mullerian hormone (AMH) levels seem to be higher in patients with PCOS.

Objective: The present study was designed to evaluate the association between AMH and insulin in women with PCOS with and without IR.

Methods: Cross-sectional study, including 86 patients, selected and divided into three groups: Group A: 26 women with PCOS and IR; Group B: 30 women with PCOS and without IR; and Group C: 30 controls without PCOS.

Results: We found significant difference between serum AMH levels in the group of women with PCOS and without IR when compared to the control group, thus showing that PCOS and IR play an important role in elevating the levels of this hormone. When the groups were compared with each other following adjustment for BMI, serum AMH levels were significantly higher in the group of women with PCOS and IR.

Conclusion: AMH levels are significantly higher in patients with PCOS, particularly in those women with PCOS and IR. Nevertheless, larger samples are required to confirm these findings.