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      Prolactin and Delay of Implantation in Lactating Adrenalectomized Rats

      ,

      Hormone Research in Paediatrics

      S. Karger AG

      Adrenalectomy, Prolactin, Lactation, Embryo implantation

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          Abstract

          Adrenalectomy before pregnancy in rats caused the persistence of high blood levels of prolactin (PRL) throughout the ensuing postpartum lactation. The persistence of hyperprolactinaemia was without effect on the (delayed) timing of blastocyst implantation during lactation. The findings indicate that ovarian cycles and pregnancy may continue normally despite the absence of adrenal hormones. They reveal that the enhanced release of pituitary PRL in response to suckling is not dependent on the removal of the adrenals during early lactation. The normal delay of blastocyst implantation through suckling, in the presence of abnormally high concentrations of PRL in blood, throws doubt on the supposed critical role of PRL in determining the length of the period of delay of implantation during lactation.

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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
          1986
          1986
          28 November 2008
          : 24
          : 1
          : 46-54
          Affiliations
          Department of Endocrinology, Growth and Reproduction, Faculty of Medicine, Erasmus University, Rotterdam, The Netherlands
          Article
          180538 Horm Res 1986;24:46–54
          10.1159/000180538
          3758930
          © 1986 S. Karger AG, Basel

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          Page count
          Pages: 9
          Categories
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