电针联合步行运动对男性腹型肥胖患者Irisin的影响

目的:探讨电针联合步行运动治疗法对男性腹型肥胖患者的疗效及对Irisin的影响。方法:60名男性腹型肥胖患者分成对照组和电针组每组各30例,2组均利用微信计步,步行运动12周。电针组在步行锻炼基础上加用电针治疗,并比较2组疗效、糖脂代谢及Irisin在实验前后的差异。结果:电针组总有效率(90.00%)高于对照组(63.33%),实验后电针组BMI、WC、TG、TC、FPG、2hPG、HbA1C指标均低于对照组,HDL、Irisin高于对照组差异有统计学意义;2组实验后的BMI、WC、TG、TC、LDL、FPG、2hPG、HbA1C、UA均低于同组实验前水平,Irisin、HDL均高于同组实验前水平。结论:2种实验方式均可提升Irisin、HDL,降低BMI、WC、TG、TC、LDL、FPG、2hPG、HbA1C、UA,加予电针治疗使BMI、WC、TG、TC、FPG、2hPG、HbA1C的下降及Irisin、HDL的上升更为明显。     

Irisin plays an important role in the outcomes of newly diagnosed prediabetes in adults in Guiyang,China

Aims/IntroductionTo explore the potential role of irisin in the outcomes of newly diagnosed prediabetes.Materials and MethodsData were obtained from the Guiyang subcenter of the Risk Evaluation of cAncers in Chinese diabeTic Individuals: a lONgitudinal (REACTION) study. A total of 2,530 participants had newly diagnosed prediabetes at baseline and completed follow up. The nested 1:1 case–control study included 161 participants who developed diabetes mellitus at follow up, and 161 age‐ and sex‐matched controls. The follow‐up study included 86 matched case–control pairs. Fasting serum irisin levels were measured using enzyme‐linked immunosorbent assay.ResultsBaseline serum irisin levels were higher in the cases than in the controls (P = 0.002); high baseline serum irisin levels were an independent risk factor for the development of diabetes (odds ratio 1.235, 95% confidence interval 1.025–1.488). After adjustment for age, sex, body mass index, glycated hemoglobin (HbA1c), smoking, exercise, and family history of diabetes, subjects in the highest quartile of irisin levels had a higher risk of diabetes than those in the lowest quartile (odds ratio 3.065, 95% confidence interval 1.511–6.218). The extent of decrease in irisin levels during follow‐up was greater in the cases than in the controls (P < 0.001). Baseline serum irisin levels were positively correlated with the extent of decrease in irisin during follow‐up (r = 0.773, P < 0.001). After adjustment for confounding factors, subjects with a decrease of irisin above the median had much higher risk for diabetes (odds ratio 5.077, 95% confidence interval 2.112–12.206).ConclusionsIrisin might play an important role in the outcomes of newly diagnosed prediabetes in adults in Guiyang, and can predict the risk for developing diabetes in these individuals.     

Irisin levels are correlated with inflammatory markers in frontotemporal dementia

Irisin is a recently discovered adipomyokine involved in the regulation of glucose and lipid, which also exhibits anti-inflammatory and neuroprotective properties. Here we aimed to compare irisin peripheral levels between individuals with behavioral variant frontotemporal dementia (bvFTD) and cognitively healthy matched controls, in addition to investigating whether there is a correlation between irisin and pro-inflammatory cytokines (IL-6 and TNF) concentrations. Twenty-nine individuals participated in this study, being 18 patients with probable bvFTD and 11 controls. Irisin, IL-6 and TNF levels were measured in EDTA plasma through ELISA. There was no difference of the levels of irisin between the groups (p = 0.964). However, in the bvFTD, but not in control group, the levels of irisin were positively correlated with the concentration of IL-6 (r = 0.637, p = 0.006) and TNF (r = 0.517, p = 0.034). The results suggest that the production of irisin in bvFTD could be related to chronic inflammatory and neurodegenerative states in these patients.     

转录调控脂肪形成——代谢性疾病的新一代治疗

2012年第72届美国糖尿病协会(ADA)年会上,Bruce Soiegelman教授获得Banting科学成就奖.会上Soiegelman作了题为“转录调控脂肪形成——代谢性疾病的新一代治疗”的演讲.他报道了一种新发现的糖代谢关键调节激素——虹神素(Irisin)和第三类型脂肪——米色脂肪组织的脂肪细胞.其研究工作包括:(1 )PR域包含蛋白16(PRDM16)是控制棕色脂肪组织与骨骼肌组织相互转换的开关.(2) PRDM16决定小鼠皮下白色脂肪组织的产热方式.(3)米色脂肪细胞是小鼠和人类一种独特的产热脂肪细胞.(4)米色脂肪组织可用于减肥.(5)过氧化物酶体增殖物活化受体(PPAR)-γ协同刺激因子(PGC)-1α依赖的白色脂肪棕色样改变及产热作用与Irisin有关.     

Irisin调节代谢的研究进展

Irisin是一种调节糖脂代谢的新激素。它是由肌肉分泌的一种肌肉因子,其前体物质为Ⅲ型纤连蛋白结构域5(FNDC5)。运动可以促进骨骼肌表达过氧化物酶体增殖物激活受体γ辅助激活因子1α(PGC-1α),PGC-1α诱导FNDC5表达,FNDC5断裂形成分泌性肌肉因子Irisin,从而诱导白脂肪棕色化,导致能量消耗增多,体质量减轻,改善糖耐量和胰岛素抵抗。Irisin有望成为糖尿病及肥胖症的新一代治疗靶点。     

Maternal serum and fetal cord blood irisin levels in gestational diabetes mellitus

Aim

To investigate the relationship between maternal and cord blood irisin in gestational diabetes mellitus (GDM).

Methods

Twenty women with GDM and 20 pregnant women with uncomplicated pregnancies were recruited for this case–control study. Maternal serum irisin and cord blood irisin levels were measured by enzyme-linked immunosorbent assay kit at the time of birth. The association of maternal serum and cord blood irisin levels with metabolic parameters was analyzed.

Results

Women with GDM had significantly lower mean serum irisin levels compared to control group (258.3 ± 127.9 vs. 393 ± 178.9 ng/ml, p < 0.05). Mean cord blood irisin levels for GDM and control groups were not significantly different (357.2 ± 248.0 vs. 333.2 ± 173.4 ng/ml, p > 0.05). No significant differences were found in terms of maternal age, gestational week at birth, BMI at birth, birth weight, neonatal height, systolic and diastolic blood pressure between the groups as well (p > 0.05). Serum irisin level was negatively correlated with BMI at birth and HOMA-IR (r = −0.401, p = 0.010; r = −0.395, p = 0.012, respectively). No correlations between irisin levels and others parameters were found in both groups.

Conclusions

Maternal serum irisin levels of patients with GDM are significantly lower compared with non-GDM controls. However, no significant difference was found between cord blood irisin levels of patients with GDM and healthy pregnant women.     

糖尿病视网膜病变患者血清Metrnl和鸢尾素水平变化及其临床意义

目的　探讨糖尿病视网膜病变（DR）患者血清Metrnl和鸢尾素（Irisin）水平变化及其临床意义,以期为DR患者的诊治提供新思路。方法　收集2020年3月至2021年9月就诊于济南市第八人民医院的2型糖尿病患者120例,根据是否合并视网膜病变和病变程度分为非DR组（NDR组,n=39）、非增生型DR组（NPDR组,n=43）、增生型DR组（PDR组,n=38）。同期选取健康体检者40人为正常对照组（NC组）。抽取各受试者的静脉血,分离血清,采用酶联免疫吸附试验检测其血清Metrnl和Irisin水平,并测量体重指数（BMI）、空腹血糖（FPG）、甘油三酯（TG）、总胆固醇（TC）、低密度脂蛋白胆固醇（LDL-C）、高密度脂蛋白胆固醇（HDL-C）、糖化血红蛋白（HbA1c）、空腹胰岛素（FINS）、超敏C反应蛋白（hs-CRP）、白细胞介素-6（IL-6）、肿瘤坏死因子-α（TNF-α）、单核细胞趋化蛋白1（MCP-1）、胰岛素抵抗指数（HOMA-IR）等指标。采用Spearman相关分析法分析患者血清Metrnl与Irisin水平、糖尿病病程、BMI、FPG、TG、TC、LDL-C、HDL-C、HbA1c、FINS、hs-CRP、IL-6、TNF-α、MCP-1、HOMA-IR的相关性。采用受试者工作特征（ROC）曲线分析血清Metrnl和Irisin水平对DR的诊断价值,采用多因素logistic回归分析DR发生的影响因素。结果　NDR组、NPDR组和PDR组患者血清Metrnl和Irisin水平均低于NC组（均为P<0.05）。NPDR组和PDR组患者血清Metrnl和Irisin水平均低于NDR组（均为P<0.05）,且PDR组患者血清Metrnl和Irisin水平降低更明显,NPDR组和PDR组患者血清Metrnl和Irisin水平比较差异均有统计学意义（均为P<0.05）。相关性分析显示,患者血清Metrnl水平与Irisin水平呈正相关（r=0.612,P<0.01）,但与DM病程（r=-0.473,P=0.000）、TG（r=-0.286,P=0.021）、HbA1c（r=-0.347,P=0.007）、HOMA-IR（r=-0.179,P=0.034）、TNF-α（r=-0.328,P=0.018）、IL-6（r=-0.196,P=0.030）和MCP-1（r=-0.272,P=0.025）均呈负相关。ROC分析结果显示,血清Metrnl和Irisin诊断DR的ROC曲线下面积分别为0.762和0.674,而两者联合诊断DR的ROC曲线下面积为0.858,灵敏度和特异度均高于血清Metrnl或血清Irisin单独诊断。logistic回归分析结果显示,糖尿病病程、HbA1c、MCP-1、血清Irisin和Metrnl水平均为DR发生的独立影响因素。结论　DR患者血清Metrnl和Irisin水平降低,且与患者病情程度相关,可能在糖脂代谢和炎症反应方面影响DR发生发展,对DR的诊断有一定预测价值。     

穴位按摩辅助甘精胰岛素对老年糖尿病患者血糖及Netrin–1、Irisin水平的影响

目的 探讨穴位按摩辅助甘精胰岛素对老年糖尿病患者血糖及轴突导向因子–1（Netrin–1）、鸢尾素（Irisin）水平的影响。方法 选取2019年6月至2021年6月绍兴文理学院附属医院收治的老年糖尿病患者165例,采用随机数字表法分为对照组83例、联合组82例。对照组予甘精胰岛素治疗,联合组予穴位按摩辅助甘精胰岛素治疗。检测两组患者的血糖相关指标、胰岛素抵抗水平变化,通过黄嘌呤氧化酶法测定超氧化物歧化酶（superoxide dismutase,SOD）水平、硫代巴比妥酸法检测丙二醛（malondialdehyde,MDA）水平;酶联免疫吸附实验法检测白介素细胞–17（interleukin 17,IL–17）、白介素细胞–1β（interleukin–1β,IL–1β）、Irisin水平;全自动生化分析仪检测两组患者的血脂指标;RT–PCR法测定Netrin–1相对表达量。结果 治疗后,与对照组比较,联合组患者糖化血红蛋白（hemoglobin A1c,HbA1c）、空腹血糖（fasting blood glucose,FBG）、餐后2h血糖（2–hour postprandial blood glucose,2hPG）、胰岛素抗生指数（insulin life resistance index,HOMA–IR）、MDA、IL–17、IL–1β、总胆固醇（serum total cholesterol,TC）、三酰甘油（triacylglyceride,TG）、低密度脂蛋白胆固醇（high density lipoprotein cholesterol,LDL–C）水平、Netrin–1表达水平明显降低（P<0.05）,胰岛β细胞功能指数（index of β–cell function in HOMA,HOMA–β）、SOD、高密度脂蛋白胆固醇（high level data link control,HDL–C）水平、Irisin表达升高（P<0.05）。结论 使用穴位按摩辅助甘精胰岛素对老年糖尿病患者进行治疗,患者血糖水平、胰岛素抵抗明显缓解,氧化应激、炎性反应明显减轻,血脂水平得到显著改善,Netrin–1、Irisin表达受到明显调控,治疗效果更显著。     

Higher circulating irisin levels in patients with polycystic ovary syndrome:a meta-analysis

Insulin resistance (IR) has been reported to be highly associated with the pathogenesis of polycystic ovary syndrome (PCOS). Although irisin, a newly identified myokine that may be closely associated with IR, has been implicated in the development of PCOS, the results are still ambiguous. We performed this meta-analysis to compare the circulating irisin levels between PCOS and healthy women and assess the association of irisin with IR. Published works were retrieved from PubMed and Embase databases using combinations of ‘irisin’ and (‘polycystic ovary syndrome’ or ‘PCOS’). Eight studies involving 1918 PCOS patients and 528 controls were included in the meta-analysis. Publication bias was observed using a funnel plot and Egger's regression asymmetry test. The pooled data indicated that the levels of irisin were at least 45.78?ng/ml [95% confidence interval (CI)] (12.45, 79.12, p?=?.007) higher in patients with PCOS than that in the healthy controls. Additionally, we did not observe a significant correlation between circulating irisin levels and IR in study populations, although the results may not be reliable for small sample sizes. The current meta-analysis suggested that irisin might contribute to the development of PCOS independent of IR.