Journal of Andrology Testis Workshop 2009
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Published-Ahead-of-Print September 18, 2008, DOI:10.2164/jandrol.108.006007
Journal of Andrology, Vol. 30, No. 4, July/August 2009
Copyright © American Society of Andrology
DOI: 10.2164/jandrol.108.006007

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Review

Androgens Play a Pivotal Role in Maintaining Penile Tissue Architecture and Erection: A Review

ABDULMAGED M. TRAISH

From the Departments of Biochemistry and Urology, Boston University School of Medicine, Boston, Massachusetts.

Correspondence to: Dr Abdulmaged M. Traish, Professor of Biochemistry and Urology, Director, Laboratories for Sexual Medicine, Institute for Sexual Medicine, Boston University School of Medicine, Center for Advanced Biomedical Research, 700 Albany St, W607, Boston, MA 02118 (e-mail: atraish{at}bu.edu).



Abstract

Androgens are essential for development, growth, and maintenance of penile structure, and regulate erectile physiology by multiple mechanisms. Here we provide a concise overview of the basic research findings pertaining to androgen modulation of erectile tissue architecture and physiology. A significant body of evidence exists pointing to a critical role of androgens in erectile physiology. Studies in animal models have provided fundamental knowledge on the role of androgens in modulating tissue architecture and cellular, molecular, and physiological mechanisms. Based on data from our laboratory and those reported by others, we believe that androgens play a pivotal role in maintaining the structure and function of the peripheral penile nerve network, the structural integrity of the corpora cavernosa, the tunica albuginea, and the endothelium of the cavernous spaces. Further, androgens play an important role in regulating the differentiation of precursor cells into trabecular smooth muscle. In this review, we will focus our discussion on findings pertaining to the role of androgens in regulating penile tissue architectural elements in modulating penile function. This knowledge has a profound impact on the potential use of androgens in the clinical setting to treat patients with erectile dysfunction.

     Key words: Andropause, erectile dysfunction, hormone, penis, adipogenesis, androgen deficiency, corpus cavernosum, sexual dysfunction, smooth muscle






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