15 de julho de 2008

Beneficial effects of testosterone administration on symptoms of the lower urinary tract in men with late-onset hypogonadism: a pilot study.

Aging Male. 2008 Jun;11(2):57-61.
Kalinchenko S, Vishnevskiy EL, Koval AN, Mskhalaya GJ, Saad F.
Russian Research Center for Endocrinology, Moscow, Russia.
Kalinchenko@list.ru
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INTRODUCTION: Elderly men are bothered by lower urinary tract complaints designated as lower urinary tract symptoms (LUTS). In epidemiological studies LUTS appears strongly associated with erectile dysfunction, and also with metabolic syndrome. LUTS occurs at an age at which plasma testosterone levels decline, in some men to hypogonadal values. Objectives. This pilot study tested whether testosterone administration to elderly men complaining of LUTS and whose plasma testosterone levels are below normal, might alleviate LUTS.
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METHODS: Group 1 (n = 10) received treatment with testosterone gel (50 mg) daily for three months; group 2 (n = 20) received treatment with injections of testosterone undecanoate 1000 mg for 26 weeks.
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RESULTS: Upon these interventions, plasma testosterone increased to the normal range. Symptoms of LUTS, measured by the International Prostate Symptoms Score, improved significantly, and also scores of the Aging Males' Symptoms scale and international index of erectile function improved. There were no untoward effects on the prostate over this period of time of the study.
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CONCLUSION: Testosterone administration improved symptoms of LUTS in men with late-onset hypogonadism. The mechanism of action is as yet not understood, but it may be connected with or parallel with the effects of testosterone on penile tissues in hypogonadal men, such as on nitric oxide and phosphodiesterase.
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