脑梗死合并代谢综合征患者脂联素水平与脑动脉狭窄的相关性

目的探讨脑梗死合并代谢综合征患者脂联素水平与脑动脉狭窄的相关性。方法对74例因急性脑梗死入院的患者,根据国际糖尿病联盟代谢综合征诊断标准,分为代谢综合征组及非代谢综合征组。检测血清脂联素、高密度脂蛋白、低密度脂蛋白、甘油三酯及总胆固醇,借助核磁共振血管成像明确有无颅内外动脉粥样硬化狭窄,计算各组的发生率。结果代谢综合征组血清脂联素水平显著低于非代谢综合征组(2.759 mg/L比3.538 mg/L,P<0.05)。代谢综合征组血管狭窄发生率(85.0%)显著高于非代谢综合征组(64.7%),差异有统计学意义(P=0.039)。单因素Logistic回归分析表明脂联素与脑动脉硬化狭窄无显著相关性(OR=1.272,P>0.05),代谢综合征与动脉粥样硬化狭窄呈正相关(OR=3.09,P<0.05)。结论脂联素水平下降是代谢综合征发病原因之一;代谢综合征与脑动脉粥样硬化狭窄相关;脂联素与脑动脉狭窄无明显相关性。     

血清脂联素水平与老年人代谢综合征的相关性

目的 通过横断面研究,评估血清脂联素水平与老年人代谢综合征的相关性.方法 检测61例代谢综合征患者和140例非代谢综合征老年人血清脂联素、C反应蛋白、血糖、胆固醇、三酰甘油、高密度脂蛋白、低密度脂蛋白等,通过Logistic回归分析评价血清脂联素水平与老年人代谢综合征的关系,并采用等级相关统计方法比较血清脂联素水平. 结果 代谢综合征患者血清脂联素为(7.2±3.6)g/L,低于非代谢综合征组(10.0±3.9)g/L,代谢综合征1级、2级、3级的患者分别为27例(44.3%)、21例(34.4%)和13例(21.3%),脂联素水平分别为(8.5±2.7)g/L、(7.0±2.5)g/L和(4.9±2.4)g/L,随着代谢综合征组分的增多,脂联素的含量呈下降趋势,两两比较呈等级相关(均为P＜0.01).Logistic回归分析显示,在校正了年龄、体质指数和性别比后,高水平脂联素使代谢综合征患病风险降低.脂联素四分法表示中,高脂联素水平组患代谢综合征的风险较其他较低组降低96.0%(OR=0.04,95%可信区间0.023～0.056,P＜0.01).结论 老年人中,高水平脂联素使代谢综合征患病风险降低.     

广东省部分自然人群甘油三酯-葡萄糖指数与脂联素的相关性研究北大核心CSCD

目的 探索甘油三酯-葡萄糖(triglycerides-glucose,TyG)指数与脂联素的相关性。方法 纳入2018年12月至2019年10月在广州及东莞采集的自然人群3680例受试者样本作为研究对象,采用胶乳增强免疫比浊法检测脂联素水平,检测甘油三酯、空腹血糖,利用公式计算甘油三酯-葡萄糖指数。相关性分析采用Pearson相关性分析及多因素校正后的线性回归分析。结果 根据脂联素四分位数间距分组下的组间比较结果显示甘油三酯-葡萄糖指数随脂联素水平增加而减少,相关性分析和多因素线性回归分析结果显示两者呈负性关联,差异具有统计学意义(P<0.001)。此外,亚组分析结果显示,除外瘦人群,两者负性关联在其他亚人群中稳定存在(P<0.001)。结论 甘油三酯-葡萄糖指数与脂联素存在显著的负性关联。然而,在瘦人群中甘油三酯-葡萄糖指数与脂联素负向关联消失,提示在瘦人群中胰岛素抵抗与脂肪代谢的关联与一般人群存在差异。     

非酒精性脂肪性肝病患者血清脂联素和瘦素水平变化

目的研究血清脂联素和瘦素水平与非酒精性脂肪性肝病(NAFLD)的关系。方法应用放射免疫分析法检测56例NAFLD患者和42例健康人血清脂联素、瘦素、总胆固醇、甘油三酯、高密度脂蛋白胆固醇、低密度脂蛋白胆固醇、载脂蛋白ApoA、ApoB、胰岛素、胰岛素抵抗指数、体质量指数。结果对照组和NAFLD患者血清脂联素分别为12.4±3.2mg/L和6.1±1.9mg/L(P<0.01),高密度脂蛋白胆固醇为1.2±0.3mmol/L和1.0±0.3mmol/L(P<0.05),瘦素为5.3±1.4μg/L和9.2±2.1μg/L(P<0.01),胰岛素为9.4±4.2IU/L和18.5±7.8IU/L(P<0.01),甘油三酯为1.0±0.5mmol/L和2.4±1.2mmol/L(P<0.01),低密度脂蛋白胆固醇为2.2±0.6mmol/L和2.8±0.7mmol/L(P<0.05),体质量指数为21.5±2.1kg/m2和28.3±3.2kg/m(2P<0.01),胰岛素抵抗为1.1±0.4IU/mmol和3.8±2.21u/mmo(lP<0.01);脂联素水平与瘦素、体质量指数和胰岛素抵抗呈负相关(r=-0.552,-0.497,-0.513,P均<0.01)。结论 NAFLD患者血清脂联素水平下降,瘦素水平升高,且与胰岛素抵抗相关。     

冠心病患者血浆脂联素水平与代谢综合征的相关性研究

目的 检测冠心病病人血浆脂联素水平,并采用多个代谢综合征（metabolic syndrome,MS）诊断标准判断是否合并MS,探讨脂联素与MS的关系,评价MS标准的敏感性.方法 冠心病60例,分别采用美国国家胆固醇教育计划成人治疗指南Ⅲ（national cholesterol education program adult treatment panel Ⅲ,NCEP ATP Ⅲ）和2005年国际糖尿病联盟（international diabetes federation,IDF）的MS诊断标准判断合并MS者,分析冠心病合并MS与单纯冠心病者之间血浆脂联素水平的差异.结果 符合NCEP ATP Ⅲ标准的MS 16例（占25%）,其血浆脂联素水平（4.7±1.2）mg/L;单纯冠心病病人为（5.1±1.1）mg/L,差异无统计学意义（P＞0.05）.符合IDF标准的MS者30例（占50%）,其血浆脂联素水平为（4.3±1.5）mg/L,较单纯冠心病病人（5.4±2.2）mg/L显著降低（P＜0.05）.结论 冠心病合并MS病人的血浆脂联素水平低于单纯冠心病病人,IDF的MS诊断标准对早期发现MS人群更敏感.     

冠心病患者血浆脂联素水平降低

目的观察冠心病患者血浆脂联素水平,并探讨血浆脂联素水平与冠心病间的关系。方法经冠状动脉造影证实的冠心病患者共219例,对照组187例,采用Adiponectin ELISA试剂盒检测血浆脂联素水平,检测空腹血糖(FPG)、总胆固醇(TC)、三酰甘油(TG)、低密度脂蛋白胆固醇(LDL-C)、高密度脂蛋白胆固醇(HDL-C);计算体质量指数。结果冠心病组患者的脂联素水平(6.3vs12.6mg/L,P<0.01)显著低于对照组;Spearman偏相关分析显示经年龄、性别校正后脂联素水平与FPG、收缩压(SBP)、LDL-C、TG呈负相关,与HDL-C呈正相关;多元logistic回归分析显示脂联素水平与冠心病及其主要危险因子独立相关。结论冠心病患者血浆脂联素水平降低,可能是冠心病的一个新的独立危险因子。     

糖耐量受损和2型糖尿病患者血清C反应蛋白与脂联素的水平及相关性

目的 探讨血清C反应蛋白(CRP)与脂联素在糖耐量受损(IGT)和2型糖尿病(T2DM)患者中的水平及其相关性.方法 选取56例IGT患者、55例T2DM患者及50例健康对照组人群作为研究对象,分别测定血清CRP、脂联素、总胆固醇、甘油三酯、高密度脂蛋白胆固醇和低密度脂蛋白胆固醇、血糖、胰岛素,血压、身高、体重、腰围、臀围,计算体重指数,采用MINIMOD计算机软件包计算胰岛素敏感指数(SI)及急性胰岛素反应(AIR),并进行分析比较.结果 T2DM组、IGT组血清CRP分别为(2.46±0.25 )mg/L、(3.12±0.46 )mg/L,对照组为(0.46±0.21 )mg/L,前者显著高于后者;T2DM组、IGT组血清脂联素分别为(3.49±1.21) mg/L、(4.13±1.54) mg/L,对照组为(7.81±2.65) mg/L,前者显著低于后者.T2DM组和IGT组SI及AIR显著低于对照组,甘油三酯及低密度脂蛋白胆固醇显著高于对照组,差异均有统计学意义(P＜0.05);CRP与脂联素、AIR和SI呈负相关,脂联素与AIR和SI呈正相关(P＜0.05).结论 血清CRP与脂联素在IGT和T2DM患者血清中表达发生异常改变,且与患者胰岛素抵抗密切相关,检测其血清水平对预测疾病预后及指导早期干预意义重大.     

高血压前期与胰岛素抵抗、血清脂联素水平的相关研究

目的探讨人群胰岛素抵抗及血清脂联素水平与高血压前期的关系。方法入选160例体检人群,分为理想血压组（43例）、高血压前期组（79例）、1级高血压组（38例）,分别检测受检者血清脂联素、空腹血清胰岛素水平,采用HOMA-IR法计算胰岛素抵抗指数。对理想血压是否进展为高血压前期进行二分类Lo-gistic回归分析。结果理想血压组、高血压前期组、1级高血压组胰岛素抵抗指数分别为（1.39±0.06）、（1.78±0.06）、（2.49±0.15）,三组间差异有显著统计学意义（P〈0.01）。高血压前期组、1级高血压组血清脂联素水平分别为（17.76±0.99）mg/L、（18.59±1.32）mg/L,两组差异无统计学意义;两组血清联素水平与理想血压组[（22.89±1.25）mg/L]比较,差异均有显著统计学意义（P均〈0.01）。Logistic回归分析表明体质指数、胰岛素抵抗指数为理想血压进展为高血压前期的危险因素而脂联素为保护因素。结论高血压前期人群胰岛素抵抗水平已经升高,并伴随脂联素水平下降。     

冠心病患者血浆脂联素水平降低

目的 观察冠心病患者血浆脂联素水平,并探讨血浆脂联素水平与冠心病间的关系.方法 经冠状动脉造影证实的冠心病患者共219例,对照组187例,采用Adiponectin ELISA试剂盒检测血浆脂联素水平,检测空腹血糖(FPG)、总胆固醇(TC)、三酰甘油(TG)、低密度脂蛋白胆固醇(LDL-C)、高密度脂蛋白胆固醇(HDL-C);计算体质量指数.结果 冠心病组患者的脂联素水平(6.3 vs 12.6 mg/L,P<0.01)显著低于对照组;Spearman偏相关分析显示经年龄、性别校正后脂联素水平与FPG、收缩压(SBP)、LDL-C、TG呈负相关,与HDL-C呈正相关;多元logistic回归分析显示脂联素水平与冠心病及其主要危险因子独立相关.结论 冠心病患者血浆脂联素水平降低,可能是冠心病的一个新的独立危险因子.     

非酒精性脂肪性肝病患者血清瘦素和脂联素与胰岛素抵抗的关系

目的 探讨非酒精性脂肪性肝病(NAFLD)患者血清瘦素、脂联素的变化及其与胰岛素抵抗的关系. 方法 选取NAFLD患者60例,同期门诊体检健康者60名为对照组,ELJSA法测定血清瘦素、脂联素水平,并检测体质量指数、腰臀比、甘油三酯、总胆固醇、高密度脂蛋白胆固醇(HDL-C)、空腹血糖、ALT、AST、γ-谷氨酰转肽酶(GGT),稳态模型评估的胰岛素抵抗指数(HOMA-IR).采用SPSS10.0软件包进行统计学分析,计量资料差异性比较用方差分析和t检验,多因素相关性用Spearman分析和Logistic回归分析. 结果 血清瘦素、脂联素水平NAFLD组分别为(12.37±1.99)μg/L和(12.69±2.83)mg/L,对照组分别为(5.20±1.03)μg/L和(22.83±4.61)mg/L,t值分别为24.661和14.516,P值均<0.01;HOMA-IR,NAFLD组为4.86±0.63,对照组为1.91±0.41,t值为30.451,P<0.01.Logistic多因素回归分析显示瘦素与腰臀围之比、HOMA-IR、空腹血糖呈独立正相关,β值分别为8.175、0.974和0.564,P值均<0.01;脂联素与HOMA-IR、体质量指数呈独立负相关,β值分别为-0.495和-0.314,P值均<0.01.结论 NAFLD患者血清瘦素、脂联素的变化与胰岛素抵抗有关.     

Association of the leptin to high-molecular-weight adiponectin ratio with metabolic syndrome

Recent studies have reported that leptin and adiponectin are associated with metabolic syndrome. The leptin/adiponectin ratio has been suggested as an atherosclerotic index. The objective of this study was to compare the degree of association of metabolic syndrome with adiponectin levels, leptin levels, leptin/adiponectin ratio, and leptin/high-molecular-weight (HMW) adiponectin ratio. The study population included 3272 Koreans (men: 1915, women: 1357; age, 30-84 years), who had visited the Health Examination Center. Adipokines were divided into quartiles, and metabolic syndrome was defined by the National Cholesterol Education Program Adult Treatment Panel-III (NCEP ATP III). A logistic regression model was fitted to establish the association between adipokines and metabolic syndrome. Adipokines, such as adiponectin, HMW adiponectin, and leptin, were found to be statistically related to metabolic syndrome. Compared to the lowest quartile, the leptin/HMW adiponectin ratio in the highest quartile was associated with a 5-fold increase in the probability of prevalent metabolic syndrome, which was independent of age, smoking status, exercise, low-density lipoprotein (LDL) cholesterol, and body mass index. There was a linear increase in the leptin/HMW adiponectin ratio as the number of metabolic syndrome components increased. The leptin/HMW adiponectin ratio had the highest odds ratio in women. In addition, compared to adiponectin or leptin alone, the AUC of the leptin/adiponectin ratio and leptin/HMW adiponectin ratio was higher for metabolic syndrome. We may suggest that the leptin/HMW adiponectin ratio is not superior to other adipokine markers, but is as effective as the leptin/total adiponectin ratio.     

Inverse association between adiponectin and C-reactive protein in substantially healthy Japanese men

OBJECTIVE: An inverse association between adiponectin and C-reactive protein (CRP) has been shown in certain pathological states including obesity, diabetes, and coronary artery disease, which themselves might have confounded this association. This study investigated the association between adiponectin and CRP among substantially healthy subjects. METHODS AND RESULTS: A population of 2347 middle-aged Japanese men with no medical history of cardiovascular disease, cancer, diabetes, hypertension, or hyperlipidemia was evaluated. Those with some metabolic syndrome components from serological and anthropometric tests were excluded, leaving 714 men for analysis. Serum adiponectin and CRP were significantly correlated (r = -0.21, P < 0.001). After categorization into quartiles from the lowest to the highest adiponectin concentration (Q1 to Q4), the CRP level was found to be significantly higher in Q1 than in Q2, Q3 and Q4 (0.41 mg/L versus 0.30, 0.25 and 0.24 mg/L, P = 0.043, P < 0.001 and P < 0.001, respectively). These associations remained significant even after adjustment for covariates. Moreover, multiple linear regression analysis revealed that adiponectin contributed more strongly to CRP than other factors, including the index of insulin resistance. CONCLUSIONS: An inverse and strong association between adiponectin and CRP in substantially healthy subjects implies that decreased serum adiponectin might be fundamentally associated with the early stage of low-grade inflammation.     

Preliminary report: A serious link between adiponectin levels and metabolic syndrome in a Korean nondiabetic population

This large-scale cross-sectional investigation highlights the relationships between adiponectin levels and a number of metabolic syndrome components in a nondiabetic Korean population (N = 6634). In a multivariate logistic regression model, after adjustment for age, homeostasis model assessment of insulin resistance, body mass index, smoking history, C-reactive protein, and low-density lipoprotein cholesterol, adiponectin levels were inversely related with metabolic syndrome in men and women (P < .05). Adiponectin level was found to be a significant contributor to metabolic syndrome. Our findings suggest that adiponectin is an important biomarker even in a nondiabetic population at high risk of metabolic syndrome.     

The association between adiponectin and diabetes in the Korean population

As indicators of obesity, waist circumference (WC), body mass index (BMI), and adiponectin are well-known risk factors for diabetes mellitus. The objectives of this study were to measure the independent association between these obesity indicators and diabetes and to examine the combined effect of these indicators on diabetes in a Korean population. The WC, BMI, and serum adiponectin were measured in 4459 healthy Koreans and were classified into tertile groups for men and women. The independent and combined associations of the obesity indicators with diabetes were measured using logistic regression analyses. Diabetes was defined as fasting serum glucose greater than 126 mg/dL or taking medication. Levels of adiponectin were inversely associated with BMI and WC and directly associated with age and high-density lipoprotein (HDL) cholesterol (P < .001). After adjusting for age, BMI, WC, and other lifestyle factors, low levels of adiponectin were associated with an increased prevalence of diabetes. Further adjustment for HDL cholesterol and triglyceride attenuated this association in women but not men. The combined effects of WC and adiponectin on diabetes progressively increased; however, the interaction of these 2 variables was not statistically significant. The combined effect of BMI and adiponectin on diabetes showed similar results. These results suggest that adiponectin was associated with diabetes. The association was independent of BMI and WC and was partly modified by HDL and triglyceride. There were no effect modifications of adiponectin with WC and BMI on diabetes.     

The synovial fluid adiponectin-leptin ratio predicts pain with knee osteoarthritis

The relationship between adipokines, such as leptin and adiponectin, and cartilage degeneration is being increasingly recognized. We asked what the relationship is between these hormones and patient-reported knee osteoarthritis (OA) pain. We collected demographic data, Short Form McGill Pain scores, Western Ontario and McMaster Universities Arthritis Index (WOMAC) pain scores, and synovial fluid (SF) samples from 60 consecutive patients with severe knee OA at the time of joint replacement surgery. SF samples were analyzed for leptin and adiponectin using specific ELISA. Non-parametric correlations and linear regression modeling were used to identify the relationship between the adipokines and pain levels. The correlations between the individual adipokines and the pain scales were low to moderate and consistently less than that for the corresponding adiponectin/leptin (A/L) ratio. Linear regression modeling showed that the A/L ratio was a significant predictor of a greater level of pain on the MPQ-SF (p = 0.03) but not the WOMAC pain scale (p = 0.77). A greater A/L ratio was associated with less pain with severe knee OA and this metabolic pathway may represent a target for novel therapeutics.     

Adiponectin is independently associated with glycosylated haemoglobin

BACKGROUND: In humans, adiponectin has been demonstrated to circulate in inverse proportion to the degree of insulin resistance. OBJECTIVE: To investigate the association between adiponectin and glycosylated haemoglobin (HbA1c) in a population-based study. DESIGN AND METHODS: Two hundred and ninety-seven individuals aged 30-75 years were enrolled in a cross-sectional study. They included patients with type 2 (non-insulin-dependent) diabetes mellitus and stable, good metabolic control (n=32) and individuals with glucose intolerance (n=54). Adiponectin was measured using a sandwich enzyme-linked immunosorbent assay (intra-assay and interassay coefficients of variation 3.3 and 7.4% respectively). RESULTS: Adiponectin correlated with age (r=0.161; P=0.006), body mass index (r=-0.197; P=0.001), diastolic blood pressure (r=-0.181; P=0.005), fasting glucose and HbA1c (r=-0.251 and r=-0.22 respectively; P<0.0001), high-density lipoprotein cholesterol (r=0.442; P<0.001) and serum triglycerides (r=-362; P<0.001). In multiple regression analysis, sex, age, fasting and post-load glucose, and adiponectin independently contributed to 40% of the variance in HbA1c. Among individuals with normal glucose tolerance, fasting glucose (P=0.0033), post-load glucose (P=0.0015), age (P=0.001) and adiponectin (P=0.0083) independently contributed to 21% of the variance in HbA1c. CONCLUSION: Adiponectin is significantly associated with altered glucose metabolism and independently contributes to the variance of HbA1c in a population-based manner.     

Adiponectinemia in visceral obesity: impact on glucose tolerance and plasma lipoprotein and lipid levels in men

The present study examined the associations between a major adipokine, adiponectin, and adiposity indices as well as metabolic risk variables in a sample of 190 untreated asymptomatic men. Anthropometric measurements and a complete fasting plasma lipoprotein and lipid profile were obtained, and subjects underwent an oral glucose tolerance test. Fasting plasma adiponectin concentrations were determined by an ELISA. Although all adiposity and adipose tissue (AT) distribution indices were negatively correlated with plasma adiponectin levels (-0.14 /=30 kg/m(2)) but who markedly differed in their level of visceral AT (< vs. >/=130 cm(2); n = 15) revealed significant differences in adiponectin levels (7.0 +/- 3.0 vs. 11.1 +/- 4.9 microg/ml; P < 0.02 for men with high vs. low visceral AT, respectively). Finally, when men were stratified into tertiles of visceral AT and further classified on the basis of the 50th percentile of adiponectin levels (8.8 microg/ml), a 3 x 2 ANOVA revealed an independent contribution of adiponectin on the variation of high-density lipoprotein cholesterol levels (P < 0.002) and of the glucose area (P < 0.02). These results support the notion that adiponectin concentration is influenced to a greater extent by visceral than sc obesity. Furthermore, adiponectin predicts glucose tolerance and plasma high-density lipoprotein cholesterol levels in a manner that is partly independent from the contribution of visceral adiposity.     

Significance of leptin and high-molecular weight adiponectin in the general population of Japanese male adolescents

Adipokines play crucial roles in obesity-related insulin resistance in adults, but little is known in the general adolescent population. This study was designed to investigate the relationships between adipokines and metabolic parameters, the insulin resistance index, and proinflammatory cytokines in the general population of Japanese male adolescents. We studied 662 Japanese male high school students aged 16 to 17 years and 282 healthy Japanese male adults aged 30 to 61 years who received annual health checkups. High-molecular weight (HMW) adiponectin levels were significantly lower in adolescents (4.18 +/- 2.24 microg/mL) than in adults (4.84 +/- 3.20 microg/mL), despite body mass index (BMI) being significantly lower in adolescents. The HMW adiponectin levels correlated negatively with BMI and the homeostasis model assessment of insulin resistance index (HOMA-IR) in adults. In adolescents, HMW adiponectin correlated negatively with BMI and waist circumference, but not with HOMA-IR or other metabolic parameters except high-density lipoprotein cholesterol. Leptin levels correlated positively with HOMA-IR, triglycerides, tumor necrosis factor alpha, interleukin 6, and monocyte chemoattractant protein 1 and negatively with high-density lipoprotein cholesterol even after adjustment for BMI. These findings suggest that serum leptin is a more useful biomarker of fat accumulation-related insulin resistance, inflammation, and metabolic abnormalities than HMW adiponectin in the general population of male adolescents. The inverse correlation between adiponectin and insulin resistance may manifest in the later phase of obesity development.     

Low adipocyte-derived plasma protein adiponectin concentrations are associated with the metabolic syndrome and small dense low-density lipoprotein particles: atherosclerosis and insulin resistance study

Circulating plasma adiponectin, an adipocyte-derived protein, has been shown to be decreased in obese subjects as well as in patients with type 2 diabetes and also in subjects who do not have diabetes, but are insulin resistant. We assessed the relationship between plasma levels of adiponectin, the metabolic syndrome and the occurrence of small dense LDL particles (pattern B) in 101 clinically healthy middle-aged subjects recruited from the general population. Low adiponectin levels were associated with the metabolic syndrome and low-density lipoprotein (LDL) particle size (r =.55, P <.001). The relationship between adiponectin and LDL particle size remained in a multiple regression model, in which adiponectin and total body fat explained 30% of the variability in LDL particle size. Furthermore, subjects in the lowest tertile of adiponectin had an increased risk of having pattern B (risk odds ratio [ROR] = 5.6). Because this was a cross-sectional study, no conclusions can be drawn about causality. This is the first population-based study in man demonstrating a relationship between small dense LDL particles and adiponectin.