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    ARTICLE

    Prolactin-releasing activity of GHRP-5 (Momany peptide) on lactotrophs in vivo and in vitro

    ANA LUCÍA DE PAUL*, MÓNICA BONATERRA*, CLAUDIA GABRIELA PELLIZAS**, AGUSTÍN AOKI*, ALICIA INÉS TORRES*

    BIOCELL, Vol.26, No.1, pp. 49-60, 2002, DOI:10.32604/biocell.2002.26.049

    Abstract In the present study the in vivo and in vitro effects of GHRP-5 on the PRL-releasing activity in correlation with the morphological changes of lactotroph cells and their transcriptional activity were evaluated. The in vitro treatment (12 µg/100g BW/day for 3 days) of male rats with GHRP-5 does not induce any significant changes in serum PRL levels. In contrast, the addition of GHRP-5 to pituitary cell cultures increased significantly the release of PRL. This effect is enhanced in cell cultures of enriched lactotrophs, increasing significantly the secretion of PRL, the concentrations of which were 50% higher than… More >

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