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      Effects of Long-Term Testosterone Administration on Pituitary-Testicular Axis in End-Stage Renal Failure

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          Abstract

          The endocrine effects of long-term testosterone administration were studied in 6 end-stage renal failure patients. During a 3-month control period where no androgens were administered the mean plasma testosterone level (7.3 nmol/l) was depressed while mean plasma follicle-stimulating hormone (FSH), luteinizing hormone (LH), and prolactin (PRL) levels were elevated at 41.2 mU/ml, 105.5 mU/ml, and 63 ng/ml, respectively. These values were repeated during a 6-month study period where each subject was administered testosterone enanthate (400 mg) intramuscularly once a week. Plasma testosterone levels markedly increased in all subjects with a mean elevation of 72.4 nmol/l, while reductions were observed in FSH and LH levels with values of 2.7 and 16.3 mU/ml, respectively. When compared with control period values, these changes were statistically significant (p < 0.05). Although the mean plasma PRL level of 49.0 ng/ml was reduced when compared with the control period values, this reduction was not statistically significant. Our control period findings of low plasma testosterone levels coupled with high plasma LH and FSH are consistent with Leydig cell dysfunction. The significant reductions in plasma FSH and LH noted during the study period indicate a negative feedback effect produced by the pharmacologic doses of testosterone. Long-term testosterone administration, however, did not significantly affect the elevated mean PRL levels observed in these subjects.

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          Author and article information

          Journal
          NEF
          Nephron
          10.1159/issn.1660-8151
          Nephron
          S. Karger AG
          1660-8151
          2235-3186
          1982
          1982
          03 December 2008
          : 31
          : 1
          : 61-64
          Affiliations
          Division of Nephrology, Department of Medicine, University of California, Irvine Medical Center, Orange, Calif.; Renal Section, Long Beach Veterans Administration Medical Center, Long Beach, Calif., USA
          Article
          182618 Nephron 1982;31:61–64
          10.1159/000182618
          6810191
          © 1982 S. Karger AG, Basel

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          Page count
          Pages: 4
          Categories
          Original Paper

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