Human metabolism and body composition: prospects for novel studies

背景(考古学) 生物 生理学 肠道菌群 作文(语言) 瘦素 医学 内分泌学 肥胖 生物化学 古生物学 哲学 语言学
作者
André Pontes‐Silva,André Luiz Lopes,Érika da Silva Maciel,Fernando Rodrigues Peixoto Quaresma,Almir Vieira Dibai‐Filho
出处
期刊:Nutrition Reviews [Oxford University Press]
卷期号:82 (1): 5-8
标识
DOI:10.1093/nutrit/nuad040
摘要

Abstract Context Most articles on gut microbiota argue the importance of body composition assessment in patients; however, body composition assessments are fragile (ie, with methodological limitations) in the most recent studies. Objective To present two suggestions for further research using the human body composition assessment. Methods The methods used in this study are based on a Pinto et al article published in Nutrition Reviews. Data extraction On the basis of data obtained from the PubMed, SCOPUS, LILACS, and Web of Science databases, Pinto et al provided a current survey of intermittent fasting protocols and an understanding of the outcomes to date in terms of the profile of the intestinal microbiota in obese organisms. Data analysis Of the 82 original articles identified from the databases, 35 were eliminated because of duplication and 32 were excluded for not meeting the inclusion criteria. Two additional articles found in a new search were added, yielding a total of 17 studies to be included in this review. Among the protocols, alternate-day fasting and time-restricted feeding were the most common, and they were shown to have different mechanisms of metabolic signaling. Time-restricted feeding influences body mass control and biochemical parameters by regulating the circadian system and improving satiety control systems by acting on leptin secretion. In contrast, alternate-day fasting leads to a reduction of ±75% of all energy consumption regardless of dietary composition, in addition to promoting hormonal adjustments that promote body mass control. Furthermore, both protocols could remodel the intestinal microbiota by changing the Firmicutes to Bacteroidetes ratio and increasing the abundance of strains such as Lactobacillus spp. and Akkermansia that have a protective effect on metabolism against the effects of body mass gain. Conclusion Changes in adipose tissue (eg, body mass loss, control, gain) should be interpreted via the sum of skinfolds in absolute values, waist perimeter, and patients' body proportionality, because fat is just a fraction of the adipocyte (lipid).

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