Microvessel density and VEGF expression in pituitaries of pregnant women

Fabio Rotondo, Angelo Rotondo, Mark Jentoft, Bernd W. Scheithauer, Luis V. Syro, Jorge H. Donado, James E. Tarara, Kalman Kovacs

    Research output: Contribution to journalArticle in an indexed scientific journalpeer-review

    2 Scopus citations

    Abstract

    OBJECTIVE: In pregnant women, the pituitary is enlarged and the prolactin (PRL) secreting cells increase in size and number. This PRL cell hyperplasia is associated with hyperprolactinemia. The aim of the present work was to investigate adenohypophysial vascularization and immunoexpression of vascular endothelial growth factor (VEGF) in pituitaries of pregnant and post-partum women and compare the results with age-matched adenohypophyses of nonpregnant women who had no endocrine diseases. DESIGN: Pituitaries (n=18) obtained by autopsy from female patients of reproductive age who had died during pregnancy, after abortion or during post-partum were immunostained for CD-34 and VEGF using the streptavidinbiotin-peroxidase complex method. RESULTS: The results showed that microvessel densities and VEGF immunoexpression in the adenohypophyses of pregnant and post-partum women were similar to those found in the control pituitaries. CONCLUSION: It can be concluded that pituitary enlargement and PRL cell hyperplasia in pregnant women may occur without neovascularization and increased VEGF immunoexpression.

    Original languageEnglish
    Pages (from-to)292-297
    Number of pages6
    JournalHormones
    Volume12
    Issue number2
    DOIs
    StatePublished - 2013

    Keywords

    • Angiogenesis
    • Immunohistochemistry
    • Pituitary
    • Pregnancy
    • Vascular endothelial growth factor

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