Growth hormone and aging: Regulation, signal transduction and replacement therapy.

Trends in Endocrinology and Metabolism : TEM
X Xu, William E Sonntag

Abstract

It is widely accepted that during the aging process a number of alterations occur at the molecular, cellular, and tissue levels, ranging from an alteration in receptor signal transduction and gene expression to structural and morphological changes in various tissues. There is abundant empirical and scientific evidence to support the hypothesis that many of these aging processes are closely related to a decline in hormone concentrations and/or hormone action, but the etiology of these deficiencies remains elusive. GH and insulinlike growth factor-I (IGF-I) are two potent anabolic hormones that decrease with age and appear to contribute to the loss of tissue function that is associated with normal aging. In this review, age-related changes in the regulation of these hormones are detailed as well as relatively new information on mechanisms of tissue resistance to GH. Finally, the potential use of GH as a therapeutic intervention to delay physiological changes associated with age is discussed.

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Citations

Oct 3, 1998·Neuroscience·A L MarkowskaW E Sonntag
Jun 12, 2010·Endocrinología y nutrición : órgano de la Sociedad Española de Endocrinología y Nutrición·Lucinda Cacicedo, Franco Sánchez Franco
Aug 9, 2007·American Journal of Physiology. Endocrinology and Metabolism·Miriam García-San FrutosFranco Sánchez-Franco
Dec 30, 2003·International Journal of Cancer. Journal International Du Cancer·Ching LiaoDebra J Wolgemuth
Feb 26, 1998·Journal of Applied Physiology·R R KraemerV D Castracane
Apr 16, 2003·Drug Metabolism and Disposition : the Biological Fate of Chemicals·Arun K Agrawal, Bernard H Shapiro
Jan 17, 2002·Drug Metabolism and Disposition : the Biological Fate of Chemicals·Ravindra N DhirBernard H Shapiro

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