کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8366820 | 1542697 | 2016 | 27 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Relevance of pituitary aromatase and estradiol on the maintenance of the population of prolactin-positive cells in male mice
ترجمه فارسی عنوان
ارتباط آروماتاز و استرادیول هیپوفیز بر نگهداری جمعیت سلول های مثبت پرولاکتین در موش های نر
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کلمات کلیدی
aromatase knockout micePCNAIgGimmunoglobuline GTBSAIB1PAPNIHABCArKO - ARKOaromatase - آروماتازProliferating Cell Nuclear Antigen - آنتیژن هسته ای تکثیر سلولیEstradiol - استرادیولImmunocytochemistry - ایمونوسیتوشیمیEnzyme-linked immunosorbent assay - تست الیزاELISA - تست الیزاCell proliferation - تکثیر سلولیPituitary - غدهٔ زیرمغزی یا هیپوفیزluteinizing hormone - هورمون جسم زردProlactin - پرولاکتین
موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
زیست شیمی
چکیده انگلیسی
In previous studies we demonstrated the expression of aromatase in pituitary cells. This expression is gender related, and is also associated with the presence of prolactinomas. To ascertain the relevance of aromatase in modulating the populations of prolactin-positive pituitary cells an immunocytochemical and morphometric study of prolactin-positive pituitary cells was carried out using the pituitary glands of adult male and female aromatase-knockout (ArKO) mice. Additionally has been determined if pituitary aromatase is involved in a gender-linked differentiated regulation of the prolactin-producing pituitary cells. Compared to wild-type mice, the knockout animals of both genders showed a significant decrease (p < 0.01) in the cellular and nuclear areas of their prolactin cells, as well as in the percentages of the prolactin-positive cells and the proliferating prolactin cells. Our results suggest that estradiol is responsible for the maintenance of the population of prolactin cell in males and, so as not to disturb the endocrine reproductive environment, estradiol is synthesized inside the pituitary by circulating testosterone via means of aromatase P450, which acts in paracrine way. This new role for pituitary aromatase may well explain the previous findings establishing that the pituitary expression of aromatase is higher in males than in females, and the association between the development of prolactinomas and the increased expression of aromatase in tumours.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Steroids - Volume 111, July 2016, Pages 121-126
Journal: Steroids - Volume 111, July 2016, Pages 121-126
نویسندگان
MarÃa José GarcÃa-Barrado, Enrique J. Blanco, Leonardo Catalano-Iniesta, Virginia Sanchez-Robledo, MarÃa Carmen Iglesias-Osma, Marta Carretero-Hernández, Javier RodrÃguez-Cobos, Deborah Jane Burks, José Carretero,