Immunolocalization of Gastrin-Releasing Peptide in the Bovine Uterus and Placenta

Journal of Veterinary Medical Science

Emmanuel T. BALTAZAR²  Teguh BUDIPITOJO²  Eiichi HONDO³  Shigenori MATSUZAKI¹  Maria Bella C. CRUZANA²  Nobuo KITAMURA²  Sumiyati SUNARYO⁴  Junzo YAMADA² 

[1] Hokkaido Livestock Improvement Association Inc.;Department of Veterinary Anatomy, Obihiro University of Agriculture and Veterinary Medicine;Department of Veterinary Anatomy, Faculty of Agriculture, Yamaguchi University;Department of Veterinary Anatomy, Faculty of Veterinary Medicine, Gadjah Mada University

关键词: bovine;    GRP;    immunohistochemistry;    placenta;    uterus;   

DOI  :  10.1292/jvms.63.11

学科分类：兽医学

来源: Japanese Society of Veterinary Science

【 摘 要 】

References(19)Cited-By(8)Gastrin-releasing peptide (GRP), a mammalian homologue of amphibian bombesin, has been suggested to be a novel regulatory peptide in the reproductive tract during pregnancy. In this study, the localization of GRP in the bovine uterus and placenta was demonstrated by immunohistochemistry. Uterine and placental samples were collected from nonpregnant and pregnant specimens, respectively. Tissue sampling was done from the caruncle and intercaruncle of the uterus, and from the placentome (caruncle and cotyledon) and intercotyledon of the placenta. In all the tissues examined, GRP was detected although its immunoreactivity was observed at various degrees. In the uterus, moderate immunoreactivity for GRP was observed in the uterine gland epithelial cells. In the placenta, strong immunoreactivity for GRP was demonstrated in the uterine gland epithelial cells; moderate in superficial epithelial cells; and weak in the trophoblasts, trophoblastic giant cells and cryptal epithelial hybrid cells. In both nonpregnant and pregnant animals, GRP was immunolocalized in the uterine gland secretions and was found predominantly in the supranuclear region of the uterine gland epithelial cells. These findings may suggest that GRP is secreted into the uterine lumen and regulates the intrauterine environment of both the nonpregnant and pregnant bovine by exocrine, autocrine and/or paracrine manner.

【 授权许可】

Unknown