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      Hyperprolactinemia in Chronic Renal Failure: Impaired Responsiveness to Stimulation and Suppression

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          Abstract

          (PRL) secretion was investigated in 12 undialyzed patients with chronic renal failure (CRF), 30 hemodialyzed patients (HD), 19 renal transplant (RT) recipients and 17 controls. Basal PRL levels in CRF and HD patients were higher than in controls and RT subjects. Plasma PRL values were higher in CRF than in HD patients. In the HD group, plasma PRL concentrations were significantly higher in men with reduced sexual potency than in those in which it was normal. After TRH stimulation in CRF and HD the PRL response was considerably less and the time of peak delayed with respect to the controls. In RT subjects PRL did not return towards baseline after 120 min. After bromocriptine, plasma PRL suppression in CFR and HD patients was lower than in controls and RT subjects. These findings suggest that some factor which accumulates in uremia, is only partially removed by hemodialysis, and might be responsible for the hyperprolactinemia and might also interfere with the binding of TRH and bromocriptine to their respective pituitary receptors. Although a pituitary defect seems to be prevalent, a concomitant hypothalamic disorder cannot be excluded. Hyperprolactinemia seems to play a role in the sexual disturbances showed by some HD men. Whatever the alterations responsible for the impaired PRL regulation in uremia are, they are reversed by successful renal transplant.

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          Author and article information

          Journal
          NEF
          Nephron
          10.1159/issn.1660-8151
          Nephron
          S. Karger AG
          1660-8151
          2235-3186
          1981
          1981
          02 December 2008
          : 28
          : 1
          : 11-16
          Affiliations
          Departments of Nephrology, and Metabolism and Hormones, Fundación Jiménez Díaz, Madrid, Spain
          Article
          182087 Nephron 1981;28:11–16
          10.1159/000182087
          6791043
          © 1981 S. Karger AG, Basel

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          Page count
          Pages: 6
          Categories
          Original Paper

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