title: Prolactin role in the bovine uterus during adenomyosis.
abstract: Adenomyosis is uterine dysfunction defined as the presence of endometrial glands within the myometrium. It is suggested that adenomyosis is estrogen-dependent pathology, and prolactin (PRL) also affects its development. In the uterus of ruminants, PRL stimulates gland proliferation and function. We hypothesized that in the bovine uterus, the expression of PRL and its receptors (PRLRs) during adenomyosis is disturbed and modulated by estradiol (E2). Uterine tissues were collected postmortem from cows; epithelial, stromal, and myometrial cells were isolated; and cultured and treated with E2. Material was divided into 2 groups: control (nonadenomyotic) and uteri with adenomyosis. In adenomyotic uterine tissue, PRL and its long-form receptor protein were increased, as determined by Western blotting. Immunohistostaining showed that during adenomyosis, PRL and its receptors are highly expressed in adenomyotic lesions. In cultured myometrial cells, protein expression of PRL and its receptors was increased during adenomyosis. Estradiol decreased PRLRs protein expression in nonadenomyotic stromal cells and in adenomyotic myometrial cells, and increased PRL secretion by adenomyotic myometrial cells. Moreover, PRL secretion was increased in untreated epithelial and stromal cells during adenomyosis. On the other hand, in stromal cells, PRLRs messenger RNA and protein expression was decreased, as determined by real-time PCR and Western blotting, respectively. Obtained results show that significant changes in PRL and PRLRs expression are observed in uterine tissue and cells during adenomyosis, which were also affected by E2. These data suggest involvement of PRL in adenomyosis development and the link between PRL and E2actions during the dysfunction in cows.
authors: Department of Reproductive Immunology and Pathology, Institute of Animal Reproduction and Food Research of Polish Academy of Sciences, 10-748 Olsztyn, Poland.
authors: M
authors: M
authors: Łupicka
authors: Department of Reproductive Immunology and Pathology, Institute of Animal Reproduction and Food Research of Polish Academy of Sciences, 10-748 Olsztyn, Poland.
authors: B M
authors: BM
authors: Socha
authors: Department of Reproductive Immunology and Pathology, Institute of Animal Reproduction and Food Research of Polish Academy of Sciences, 10-748 Olsztyn, Poland.
authors: A A
authors: AA
authors: Szczepańska
authors: Department of Reproductive Immunology and Pathology, Institute of Animal Reproduction and Food Research of Polish Academy of Sciences, 10-748 Olsztyn, Poland. Electronic address: a.korzekwa@pan.olsztyn.pl.
authors: A J
authors: AJ
authors: Korzekwa
mesh_terms: D062788:Adenomyosis / Q000503:physiopathology / Q000662:veterinary*; D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000473:pathology / Q000503:physiopathology*; D002478:Cells, Cultured; D004847:Epithelial Cells / Q000737:chemistry / Q000378:metabolism; D004958:Estradiol / Q000494:pharmacology; D005260:Female; D015870:Gene Expression / Q000187:drug effects; D009215:Myometrium / Q000737:chemistry / Q000378:metabolism; D011388:Prolactin / Q000032:analysis / Q000235:genetics / Q000502:physiology*; D012333:RNA, Messenger / Q000032:analysis; D060888:Real-Time Polymerase Chain Reaction / Q000662:veterinary; D011981:Receptors, Prolactin / Q000032:analysis / Q000235:genetics; D017154:Stromal Cells / Q000737:chemistry / Q000378:metabolism; D014599:Uterus / Q000737:chemistry / Q000187:drug effects / Q000503:physiopathology*
chemical_list: D012333:RNA, Messenger; D011981:Receptors, Prolactin; D004958:Estradiol; D011388:Prolactin
keywords: Adenomyosis; Cow; Estradiol; Prolactin; Uterus