运动对胰岛素抵抗大鼠脂肪组织氧化应激及炎症的影响

目的 观察运动对胰岛素抵抗(Insulin Resistance IR)大鼠脂肪组织SOD活性,MDA及TNF-α含量的影响,探讨运动对IR改善的机制.方法 22只雄性SD大鼠随机分为空白对照组6只(CG)、胰岛素抵抗组(IRG)和胰岛素抵抗运动组(EIRG)各8只,采用高脂饲料诱导IR动物模型,EIRG大鼠进行为期10周游泳训练,测定各组大鼠脂肪组织中SOD活性,MDA及TNF-α含量.结果 采用高脂饲料诱导IR模型成功,运动干预后与CG比较,IRG大鼠脂肪组织MDA和TNF-α水平显著升高(P<0.05);与IRG比较,EIRG脂肪组织SOD活性显著提高(P<0.05),MDA和TNF-α水平显著降低(P<0.05);IR指数与MDA,IR指数与TNF-α,MDA与TNF-α均成正相关(r:0.430,P:0.01;r:0.475,P:0.025;r:0.432.P:0.045).结论 运动对大鼠IR的改善机制可能是通过运动上调脂肪组织抗氧化酶活性,进而降低炎性脂肪因子表达实现的.     

一次急性耐力游泳运动对DIO小鼠脂肪组织巨噬细胞介导的慢性炎症的影响

摘要：目的： 探讨一次急性耐力游泳运动对DIO小鼠脂肪组织巨噬细胞介导的慢性炎症的影响及其分子机制。方法：32只4周龄C57BL/6雄性小鼠随机分为普通饮食组(n=16)和高脂饮食组(n=16),12周高脂饮食结束分为普通饮食对照组(NC)、普通饮食游泳组(NS)、高脂饮食对照组(HC)和高脂饮食游泳组(HS),运动组小鼠进行1次2 h耐力游泳运动,每30 min休息5 min,运动结束8 h处死小鼠,分离附睾脂肪基质血管部分细胞(SVCs),流式细胞术筛分析SVCs中巨噬细胞;罗氏血糖仪检测空腹血糖(FBG)、ELISA法检测血清炎症因子;RT-PCR法检测脂肪基因表达。结果：与NC组相比,HC组小鼠血清TNF-α、IL-1β、FBG浓度显著升高(P﹤0.05),附睾脂肪F4/80+CD11b+巨噬细胞数量、F4/80+CD11b+CD11c+巨噬细胞数量显著升高(P﹤0.05),附睾脂肪TNF-α、IL-1β、IL-6、iNOS、F4/80、CD11c mRNA表达显著升高(P﹤0.05),MGL-1、IL-10、IL-4、IL-13 mRNA表达显著下降(P﹤0.05)。NC组与NS组各项指标之间无显著差异。与HC组相比,HS组小鼠TNF-α、IL-1β、FBG浓度显著下降,附睾脂肪F4/80+CD11b+巨噬细胞数量无显著差异、F4/80+CD11b+CD11c+巨噬细胞数量显著下降(P﹤0.05),附睾脂肪TNF-α、IL-6、IL-1β、CD11c mRNA表达显著降低(P﹤0.05),MGL-1、IL-10、IL-4 mRNA表达显著升高(P﹤0.05)。结论：长期高脂肪膳食诱导小鼠膳食性肥胖,内脏脂肪组织巨噬细胞,尤其M1型巨噬细胞数量增加,促炎症因子基因表达增加;一次急性耐力运动有效改善DIO小鼠脂肪组织炎症,可能与巨噬细胞M1-M2表型转化有关,与巨噬细胞数量无关。     

丙种反应性蛋白(CRP)与心脏疾病关系的研究进展

丙种反应性蛋白(CRP)是一种急性时相蛋白,对于疾病的诊断和预后有着重要意义。但其堆积会对心脏造成伤害。文章综述了影响体内CRP含量的多种因素,以及与心脏疾病关系的研究概况。提出通过控制其含量的方法来治疗心血管疾病在实验上是可行的。     

Non-linear resistance training reduces inflammatory biomarkers in persons living with HIV: A randomized controlled trial

The purpose of this study is to analyse the effect of 12 weeks of non-linear resistance training (NLRT) on anthropometry, muscle strength and inflammatory biomarkers in persons infected with human immunodeficiency virus (PIHIV). Thirty previously sedentary PIHIVs were randomized into the NLRT (n?=?15) and control (CON, n?=?15) groups. NLRT group were submitted to 12 weeks of training, whereas the CON group maintained their daily habits. At baseline and after 12 weeks, both groups underwent anthropometric evaluations and blood sampling for the analysis of inflammatory biomarkers. Analysis of covariance using preintervention values as covariate was performed to determine the effects of exercise on anthropometry, muscle strength, cytokines levels and T cells. Significance was set at p?p?p p?=?.009), blood levels of interleukin (IL)-1β (p?=?.029), IL-6 (p?=?.005), IL-8 (p?=?.010), and tumour necrosis factor (TNF)-α (p?=?.001) and an increase in muscle strength (p?p?=?.030) and CD4⁺ (p?=?.004) and CD8⁺ (p?相似文献   

髓系来源的免疫抑制性细胞免疫调节作用的研究进展

髓系来源的免疫抑制性细胞(Myeloid-derived suppressor cells,MDSC)是一群异质性免疫细胞,在肿瘤发生发展、感染和炎症等疾病进程中扩增,能够明显抑制T细胞的免疫反应。MDSC在机体免疫调节中发挥了独特的作用。本文综述了MDSC的来源、功能和其作为潜在肿瘤免疫治疗靶点的意义。     

葛根素抗炎作用研究进展

葛根素是从葛根（Radix Pueraria）的根部提取的一种异黄酮.它具有改善血管循环、抗氧化应激、治疗骨质疏松以及降血糖等作用.研究表明葛根素对免疫细胞、炎症因子、信号通路以及炎症疾病都有重要的影响.文章着重对葛根素在抑制炎症方面的作用作一简要概述.     

Women in sports: the applicability of common national reference intervals for inflammatory and coagulation biomarkers (HemSter Study)

IntroductionIntensive physical activity causes functional and metabolic changes in the athlete’s organism. The study aimed to verify the common national available reference intervals (RIs) for common inflammatory and screening coagulation tests in a population of healthy young female athletes.Materials and methodsOne hundred and twenty-one female athletes (age range: 16–34), from various sports disciplines (water polo, handball, volleyball, football, basketball), were included in the study. All participants completed the international physical activity short-form questionnaire. Blood samples were collected between 8–10 am, after an overnight fast, before any physical activity. Reference intervals were determined according to Clinical & Laboratory Standards Institute EP28-A3C Guidelines.ResultsCalculated RIs for white blood cell count (WBC), prothrombin time (PT), and activated partial thromboplastin time (APTT) ratio were in accordance with the common national RIs. Calculated RI for C-reactive protein (CRP) was lower (< 2.9 mg/L) than the proposed cut-off for a healthy population (< 5.0 mg/L). Reference interval for fibrinogen was higher (1.9–4.4 g/L), than the available RIs (1.8–3.5 g/L). D-dimer cut-off value was set at 852 µg/L fibrinogen equivalent units (FEU), higher than the proposed 500 µg/L FEU for venous thromboembolism (VTE) exclusion.ConclusionsThe applicability of the available RIs for WBC count, PT, and APTT-ratio was confirmed. However, RIs for CRP and fibrinogen differed significantly than the available common national RIs for the healthy non-athletes’ population. A higher cut-off for D-dimers should be extensively verified before implementation for VTE diagnosis exclusion in a group of healthy young female athletes.     

DOMS和离心收缩导致的肌肉损伤的关系

不习惯的离心运动均可导致延迟性肌肉酸痛（DOMS）。离心运动导致的损伤和炎症反应诱发了DOMS。然而，近来的研究不支持此假说，DOMS起因的观点受到质疑。就近来关于DOMS和肌肉损伤关系的相关文章作一综述并就其争议点提出见解。     

维生素E治疗运动性腰背肌肉筋膜炎的临床观察

维生素E能改善微循环和局部组织营养状况，参与组织细胞的氧代谢；运用维生素E治疗腰背肌肉筋膜炎患者，改善了肌肉组织细胞的氧代谢，有利于对损伤组织的修复，在临床上取得了满意的疗效。