NDLI: Immunohistochemical study on differential distribution of progesterone receptor A and progesterone receptor B within the porcine ovary.

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Immunohistochemical study on differential distribution of progesterone receptor A and progesterone receptor B within the porcine ovary.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Durlej, Malgorzata Tabarowski, Zbigniew Slomczynska, Maria
Description	Country affiliation: Poland Author Affiliation: Durlej M ( Department of Endocrinology & Tissue Culture, Institute of Zoology, Jagiellonian University, Ingardena 6, Krakow, Poland.)
Abstract	Progesterone plays a central role in the regulation of ovarian functions. Progesterone receptor (PGR) is expressed as two isoforms, PGRA and PGRB, which have been shown to have different functional activities. This immunohistochemical study describes the diverse localization of PGRA and PGRB in the porcine ovarian components: small and large antral follicles, early, midluteal and regressing corpora lutea. Ovaries were obtained from 10 cycling sows. PGRs were visualized by immunohistochemistry on paraffin sections using monoclonal antibodies against PGRA (clone 16) or PGRB (clone SAN 27). Moreover, to confirm the specificity of antibodies, Western blot analysis was performed. Nuclear staining for PGRs was observed in cells of granulosa and theca layer, corpora lutea and surface epithelium. Our results revealed that PGRA was the predominant PGR isoform in the pig ovary. In small antral follicles its expression was restricted to theca interna cells, but in large preovulatory follicles, both granulosa and theca layers stained for PGRA. In contrast, immunoreaction for PGRB isoform was limited to granulosa cells of large antral porcine follicles, while their theca layers were devoid of PGRB. The number of both PGRA and PGRB stained cells within the corpora lutea declined significantly during the luteal phase, which might be explained by the decreasing level of locally produced progesterone. The differential distribution and variations in the scores for PGRA and PGRB in various pig ovarian cell types during the cycle may reflect diverse functions for PGRA and PGRB as well as suggest a cell-specific influence of progesterone.
File Format	HTM / HTML
ISSN	03784320
Issue Number	1-2
Volume Number	121
e-ISSN	18732232
Journal	Animal Reproduction Science
Language	English
Publisher	Elsevier
Publisher Date	2010-08-01
Publisher Place	Netherlands
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Discipline Animal science Discipline Reproductive Medicine Discipline Veterinary Medicine Discipline Zoology Ovary Metabolism Receptors, Progesterone Swine Animals Female Immunohistochemistry Menstrual Cycle Physiology Organ Specificity Tissue Distribution Journal Article Research Support, Non-u.s. Gov't
Content Type	Text
Resource Type	Article
Subject	Medicine Animal Science and Zoology Endocrinology Food Animals

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