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Vol. 45, No. 3-5, 1996
Issue release date: 1996
Section title: Hormone Binding Proteins: Physiology and Clinical Implications
Horm Res 1996;45:233–237
(DOI:10.1159/000184794)

Sex Hormone-Binding Protein, Hyperinsulinemia, Insulin Resistance and Noninsulin-Dependent Diabetes

Haffner S.M.
Department of Medicine, University of Texas Health Science Center at San Antonio, Tex., USA

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Article / Publication Details

First-Page Preview
Abstract of Hormone Binding Proteins: Physiology and Clinical Implications

Published online: 12/9/2008
Issue release date: 1996

Number of Print Pages: 5
Number of Figures: 0
Number of Tables: 0

ISSN: 1663-2818 (Print)
eISSN: 1663-2826 (Online)

For additional information: http://www.karger.com/HRP

Abstract

Possible data implicating sex hormones, especially testosterone, in the etiology of cardiovascular disease and noninsulin-dependent diabetes mellitus (NIDDM) comes from the much higher rates of cardiovascular disease in men than in women. Pharmacological administration of anabolic steroids to both men and women increases both glucose and insulin concentrations and also insulin resistance. In vivo assessment of sex hormones and binding proteins in both premenopausal and postmenopausal women has suggested that increased free testosterone and decreased sex hormone-binding globulin (SHBG) is associated with higher glucose and insulin concentrations. In a few studies, increased insulin resistance has been associated with decreased SHBG levels. Some data suggests that visceral fat mediated the associations of sex hormones with insulin in women. Little prospective data is available on the association of sex hormones to the development of NIDDM in women but in two studies, low SHBG concentrations predicted NIDDM in Gothenburg and San Antonio. Recently, attention has focused on the role of sex hormones in relation to insulin in men. Surprisingly, higher levels of testosterone have been associated with improved cardiovascular risk factors (such as high-density lipoprotein cholesterol) and lower glucose and insulin levels. Total testosterone and SHBG have been associated with defects in nonoxidative glucose disposal and upper body adiposity in normoglycemic Finnish men. The latter observation is of interest since specific defects in nonoxidative glucose disposal are observed in normoglycemic relatives of subjects with NIDDM. The temporal relationship between sex hormones and insulin has been controversial. The traditional view of sex hormones increasing insulin resistance has been challenged in women by studies showing that insulin stimulates androgen production in the ovary. Recent data [JCEM 1995;80:654-658] suggests that insulin stimulates testosterone production and suppresses SHBG production in normal and obese men. On the other hand, administration of testosterone to centrally obese hypogonadal middle-aged men has improved insulin sensitivity [Int J Obes 1992;16:991-997].

© 1996 S. Karger AG, Basel


  

Author Contacts

S.M. Haffner, Department of Medicine, University of Texas Health Science Center, at San Antonio, 7703 Floyd Curl Drive, San Antonio, TX 78284-7873 (USA)

  

Article Information

Published online: December 09, 2008
Number of Print Pages : 5

  

Publication Details

Hormone Research (From Developmental Endocrinology to Clinical Research)

Vol. 45, No. 3-5, Year 1996 (Cover Date: 1996)

Journal Editor: Czernichow P. (Paris)
ISSN: 0301-0163 (Print), eISSN: 1423-0046 (Online)

For additional information: http://www.karger.com/HRE


Article / Publication Details

First-Page Preview
Abstract of Hormone Binding Proteins: Physiology and Clinical Implications

Published online: 12/9/2008
Issue release date: 1996

Number of Print Pages: 5
Number of Figures: 0
Number of Tables: 0

ISSN: 1663-2818 (Print)
eISSN: 1663-2826 (Online)

For additional information: http://www.karger.com/HRP


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