Work

Immunohistochemical co-localization of placental lactogen II and relaxin in the golden hamster (Mesocricetus auratus).

Year: 1990

Type: article

Abstract: Two hormones with lactogenic activity are produced by the hamster placenta during the second half of pregnancy. One of these hormones, hamster placental lactogen II (haPL-II), has been well characterized; however, its cellular source is not known. In the present study, haPL-II was localized in placental tissues using a specific antibody and the avidin-biotin-peroxidase immunohistochemical technique. Because relaxin has been localized in the hamster placenta, it was of interest to determine if haPL-II and relaxin are localized in the same cells. haPL-II immunoactivity was observed in primary and secondary giant trophoblast cells of the placenta on Days 12, 14, and 15 of pregnancy. On Day 15 positive staining was also observed in large cells located within mesometrial arteries and in eosinophilic bodies associated with degenerating sheathed arteries of the decidua basalis. haPL-II-positive staining was not observed in placentae from Days 8 or 10 of pregnancy. On Day 14, haPL-II was colocalized with relaxin in 75% of the giant trophoblast cells observed. Therefore, it is probable that these hormones are synthesized and secreted by the same cell.

Source: Journal of Histochemistry & Cytochemistry

DOI: 10.1177/38.7.2355175

Authors: R H Renegar, J N Southard, F Talamantes

Institution: East Carolina University

Language: English

Topic: Pregnancy-related medical research

Subfield: Public Health, Environmental and Occupational Health

Field: Medicine

Domain: Health Sciences

SDG: Good health and well-being

Open Access status: bronze

Funders: National Institutes of Health, Eunice Kennedy Shriver National Institute of Child Health and Human Development