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      Pituitary Luteinizing Hormone and Follicle-Stimulating Hormone from Birth to Adulthood in Male Rabbit

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          Abstract

          Pituitary content and concentration of LH and FSH were measured by radioimmunoassay from birth to adulthood. The pituitary contents and concentrations of both gonadotropins increased from birth to 70-90 days, then reaching adult levels. 1 µg/100 g body weight of synthetic LHRH was administered to immature (25 and 55 days of age) and adult male rabbits. LH and FSH were measured in plasma samples taken just before and 30 min after LHRH injection. At all stages studied, LHRH significantly increased circulating LH and FSH. The FSH response at 55 days and at adult age was lower than that of LH. There was a peripubertal increase of the mobilizable pituitary reserve of LH while the FSH reserve slightly but not significantly increased. This change in the pituitary responsiveness to LHRH could play a role in pubertal processes.

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          Author and article information

          Journal
          HRE
          Horm Res Paediatr
          10.1159/issn.1663-2818
          Hormone Research in Paediatrics
          S. Karger AG
          1663-2818
          1663-2826
          1981
          1981
          25 November 2008
          : 15
          : 4
          : 242-251
          Affiliations
          Physiologie Comparée et Endocrinologie, Université de Clermont II, Complexe Scientifique des Cézeaux, Aubière, France
          Article
          179463 Horm Res 1981;15:242–251
          10.1159/000179463
          6821509
          © 1981 S. Karger AG, Basel

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          Page count
          Pages: 10
          Categories
          Original Paper

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