Clinical Nutrition: 补充乳酸菌对超重或肥胖成人血糖和血脂指数的影响

2022-07-04 xxuyihan MedSci原创

肥胖是指一定程度的明显超重与脂肪层过厚,是体内脂肪,尤其是甘油三酯积聚过多而导致的一种状态。由于食物摄入过多或机体代谢的改变而导致体内脂肪积聚过多造成体重过度增长并引起人体病理、生理改变或潜伏。

肥胖通常被定义为“可能损害健康的过度脂肪堆积”,越来越多的证据表明,肥胖在许多非传染性疾病,包括高血压、血脂异常、2型糖尿病,癌症和动脉粥样硬化性心血管疾病 (ASCVD)密切相关。

此外,十多年来70 多个国家的肥胖患病率翻了一番。因此,临床上迫切需要有效的抗肥胖干预措施。肥胖是遗传和环境之间复杂相互作用的结果,肠道微生物群的组成,最近已被证明会影响肥胖的发展,一种可能增强肠道菌群的方法是服用益生菌,乳酸杆菌是最著名的益生菌物种之一,并已被证明有助于防止病原体在肠道定植。维持肠道屏障完整性,改善胰岛素分泌和代谢。因此,这项系统评价和荟萃分析旨在确定补充乳酸菌改善超重或肥胖成人血糖控制、血脂和血压的能力。

研究人员对七个电子数据库和两个试验登记册进行了搜索(文献截至日期是2022年4月),以确定符合条件的 RCT,以评估补充乳酸杆菌对超重或肥胖成年人的影响。使用随机效应模型汇总平均差 (MDs) 或标准化平均差。

研究最后总共纳入了9项符合条件的RCT,共有 598 名参与者。研究人员发现补充乳酸菌可显着降低低密度脂蛋白胆固醇(MD -5.27 mg/dL;95%置信区间 [CI] -8.28,-2.25;P=0.0006)和总胆固醇(MD -4.84 mg/dL;95% CI -8.29,-1.39;P=0.006),特别是当以胶囊、粉末或片剂形式服用12周时。补充12周后,与正常饮食相比,乳酸杆菌对空腹血糖的益处(MD -14.14 mg/dL,95% CI -24.38,-3.91;P=0.007)。但是乳酸杆菌对空腹血浆胰岛素和血压只有短期有益作用,对高密度脂蛋白胆固醇没有显著有益作用。

本项研究证实补充乳酸菌对超重或肥胖的成年人的低密度脂蛋白胆固醇和总胆固醇有有益作用,在某些条件下对空腹血糖和甘油三酯也有有益作用。因此,补充乳酸菌是治疗肥胖相关疾病的一种有前途的方法。

 

原始出处:

XudongQiu. Et al. Effects of Lactobacillus supplementation on glycemic and lipid indices in overweight or obese adults: a systematic review and meta-analysis. Clinical Nutrition.2022.

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