体脂分布、绝经过渡与激素替代疗法

Body fat distribution, the menopause transition, and hormone replacement therapy.

作者信息

Tchernof A, Poehlman E T, Després J P

机构信息

Department of Medicine, University of Vermont, Burlington, VT 05401, USA.

出版信息

Diabetes Metab. 2000 Feb;26(1):12-20.

DOI:
Abstract

Endocrine changes resulting from the menopause transition dramatically modify women's hormonal milieu. The consequences of these changes not only lead to cessation of reproduction and accompanying symptoms in women, but also dramatically impact long-term health. Loss of estrogen has been associated with the development of cardiovascular disease. Central distribution and accumulation of adipose tissue, and the concomitant insulin resistant dyslipidemic state have emerged as important components of a cluster of metabolic abnormalities that are strongly related to coronary heart disease. Thus, estrogen deficiency may affect cardiovascular disease risk by mediating changes in body fat distribution. This article is an update of the literature in the area of menopause, hormone replacement therapy, and body fat distribution. Cross-sectional studies using anthropometric measurements of abdominal fat distribution most often failed to detect an effect of the menopause transition that was independent of advancing age and degree of obesity. The use of radiologic techniques such as DEXA and computed tomography, however, led to the conclusion that the menopause transition accelerates the selective deposition of intra-abdominal fat. Available longitudinal data also support an increase in central body fatness occurring with menopause. Most intervention trials on hormone replacement therapy and body fat distribution showed that the treatment prevented the increase in central adiposity that was noted in postmenopausal women receiving no treatment or placebo. These results are supported by retrospective studies that showed a lower WHR in hormone users vs non-users. Mechanisms potentially explaining the menopause-related acceleration in abdominal fat accumulation include changes in regional adipose tissue metabolism in the face of a positive energy imbalance. As some inconsistencies were found among studies, further investigations using longitudinal and intervention designs, as well as more precise methodologies to measure body fat distribution, are needed to clearly establish the effects of menopause and hormone replacement on abdominal body fat distribution and the concomitant increase in cardiovascular disease risk.

摘要

绝经过渡引起的内分泌变化极大地改变了女性的激素环境。这些变化的后果不仅导致女性生殖功能停止及伴随症状,还对长期健康产生重大影响。雌激素缺乏与心血管疾病的发生有关。脂肪组织的中心分布和堆积,以及随之而来的胰岛素抵抗性血脂异常状态,已成为与冠心病密切相关的一系列代谢异常的重要组成部分。因此,雌激素缺乏可能通过介导身体脂肪分布的变化来影响心血管疾病风险。本文是关于绝经、激素替代疗法和身体脂肪分布领域文献的更新。使用人体测量学方法测量腹部脂肪分布的横断面研究大多未能检测到绝经过渡的独立影响,该影响独立于年龄增长和肥胖程度。然而,使用双能X线吸收法(DEXA)和计算机断层扫描等放射学技术得出的结论是,绝经过渡加速了腹部内脂肪的选择性沉积。现有的纵向数据也支持绝经后中心性肥胖增加。大多数关于激素替代疗法和身体脂肪分布的干预试验表明,该治疗可预防未接受治疗或安慰剂的绝经后女性出现的中心性肥胖增加。这些结果得到了回顾性研究的支持,这些研究表明激素使用者的腰臀比低于非使用者。可能解释与绝经相关的腹部脂肪堆积加速的机制包括在能量正平衡情况下区域脂肪组织代谢的变化。由于研究中发现了一些不一致之处,需要采用纵向和干预设计以及更精确的方法来测量身体脂肪分布进行进一步研究,以明确确定绝经和激素替代对腹部身体脂肪分布的影响以及随之而来的心血管疾病风险增加。

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