Abdominal Fat Is Associated With Lower Bone Formation and Inferior Bone Quality in Healthy Premenopausal Women: A Transiliac Bone Biopsy Study

被引：160

作者：

Cohen, Adi ^{[1
]}

Dempster, David W. ^{[2
]}

Recker, Robert R. ^{[3
]}

Lappe, Joan M. ^{[3
]}

Zhou, Hua ^{[2
]}

Zwahlen, Alexander ^{[4
]}

Mueller, Ralph ^{[4
]}

Zhao, Binsheng ^{[1
]}

Guo, Xiaotao ^{[1
]}

Lang, Thomas ^{[5
]}

Saeed, Isra ^{[5
]}

Liu, X. Sherry ^{[1
]}

Guo, X. Edward ^{[1
]}

Cremers, Serge ^{[1
]}

Rosen, Clifford J. ^{[6
]}

Stein, Emily M. ^{[1
]}

Nickolas, Thomas L. ^{[1
]}

McMahon, Donald J. ^{[1
]}

Young, Polly ^{[1
]}

Shane, Elizabeth ^{[1
]}

机构：

[1] Columbia Univ, New York, NY 10032 USA

[2] Helen Hayes Hosp, W Haverstraw, NY 10993 USA

[3] Creighton Univ, Omaha, NE 68131 USA

[4] ETH, CH-8092 Zurich, Switzerland

[5] Univ Calif San Francisco, San Francisco, CA 94143 USA

[6] Maine Med Ctr, Portland, ME 04102 USA

来源：

JOURNAL OF CLINICAL ENDOCRINOLOGY & METABOLISM | 2013年 / 98卷 / 06期

基金：

美国国家卫生研究院;

关键词：

SUBCUTANEOUS ADIPOSE-TISSUE; BODY-MASS INDEX; PROTON MR SPECTROSCOPY; X-RAY ABSORPTIOMETRY; MINERAL DENSITY; VISCERAL FAT; RISK-FACTORS; POSTMENOPAUSAL WOMEN; COMPUTED-TOMOGRAPHY; MARROW FAT;

D O I：

10.1210/jc.2013-1047

中图分类号：

R5 [内科学];

学科分类号：

1002 ; 100201 ;

摘要：

Context: The conventional view that obesity is beneficial for bone strength has recently been challenged by studies that link obesity, particularly visceral obesity, to low bone mass and fractures. It is controversial whether effects of obesity on bone are mediated by increased bone resorption or decreased bone formation. Objective: The objective of the study was to evaluate bone microarchitecture and remodeling in healthy premenopausal women of varying weights. Design: We measured bone density and trunk fat by dual-energy x-ray absorptiometry in 40 women and by computed tomography in a subset. Bone microarchitecture, stiffness, remodeling, and marrow fat were assessed in labeled transiliac bone biopsies. Results: Body mass index (BMI) ranged from 20.1 to 39.2 kg/m(2). Dual-energy x-ray absorptiometry-trunk fat was directly associated with BMI (r = 0.78, P < .001) and visceral fat by computed tomography (r = 0.79, P < .001). Compared with women in the lowest tertile of trunk fat, those in the highest tertile had inferior bone quality: lower trabecular bone volume (20.4 +/- 5.8 vs 29.1 +/- 6.1%; P < .001) and stiffness (433 +/- 264 vs 782 +/- 349 MPa; P < .01) and higher cortical porosity (8.8 +/- 3.5 vs 6.3 +/- 2.4%; P < .049). Bone formation rate (0.004 +/- 0.002 vs 0.011 +/- 0.008 mm(2)/mm . year; P < .006) was 64% lower in the highest tertile. Trunk fat was inversely associated with trabecular bone volume (r = -0.50; P < .01) and bone formation rate (r = -0.50; P < .001). The relationship between trunk fat and bone volume remained significant after controlling for age and BMI. Conclusions: At the tissue level, premenopausal women with more central adiposity had inferior bone quality and stiffness and markedly lower bone formation. Given the rising levels of obesity, these observations require further investigation.

引用

页码：2562 / 2572

页数：11

共 74 条

[1] DXA surrogates for visceral fat are inversely associated with bone density measures in adolescent athletes with menstrual dysfunction [J].