نتایج جستجو برای: erα

تعداد نتایج: 2287  

ابدی, علیرضا, طالبان, فروغ اعظم, عطری, مرتضی, مهدیپور, پروین, پیروزپناه, سعید,

سابقه و هدف: بیان ژنتیکی گیرنده استروژن-آلفا (α,ERα (Estrogen receptor-در سلول‌های تومور پستان اهمیت درمانی دارد و بیان این ژن می‌تواند به واسطه هیپرمتیلاسیون در اگزون 1 مهار شود. هدف از انجام این پژوهش، بررسی ارتباط بین مقادیر فولات، ویتامین B12 و هموسیستئین تام پلاسما با وضعیت هیپرمتیلاسیون ERα در مبتلایان به سرطان پستان برای اولین بار بود. مواد و روش‌ها: جامعه مورد بررسی 137بیمار مبتلا به س...

Journal: :Endocrine Practice 2023

Endometriosis is an estrogen-dependent gynecologic disease, which characterized by the elevated ratio of ERβ/ERα expression. Retrograde menstruation leads to ectopic erythrocytes deposition and iron overload at pelvic cavity in endometriosis. Lipocalin 2 (LCN2) a secretory protein that plays important role during transport metabolism. To date, relationship estrogen homeostasis not well studied ...

Journal: :Biochemical and Biophysical Research Communications 2021

Estrogen-responsive endometrial cancer (EC) is prevalent in uterine cancer. Its precise molecular mechanisms remain to be elucidated partly because of limited availability estrogen-sensitive EC models recapitulating clinical pathophysiology. We previously established patient-derived cell (EC-PDC) spheroid culture with high expression estrogen receptor α (ERα). Using this EC-PDC, we study the tr...

2017
Juyeon Jeong Sodam Park Hyoung-Tae An Minsoo Kang Jesang Ko

The nuclear transcription factor estrogen receptor α (ERα) plays a critical role in breast cancer progression. ERα acts as an important growth stimulatory protein in breast cancer and the expression level of ERα is tightly related to the prognosis and treatment of patients. Small leucine zipper protein (sLZIP) functions as a transcriptional cofactor by binding to various nuclear receptors, incl...

2012
Emily Powell Erin Shanle Ashley Brinkman Jun Li Sunduz Keles Kari B. Wisinski Wei Huang Wei Xu

Estrogens play essential roles in the progression of mammary and prostatic diseases. The transcriptional effects of estrogens are transduced by two estrogen receptors, ERα and ERβ, which elicit opposing roles in regulating proliferation: ERα is proliferative while ERβ is anti-proliferative. Exogenous expression of ERβ in ERα-positive cancer cell lines inhibits cell proliferation in response to ...

Journal: :American journal of physiology. Regulatory, integrative and comparative physiology 2015
Baojian Xue Zhongming Zhang Terry G Beltz Fang Guo Meredith Hay Alan Kim Johnson

The present study tested the hypotheses that 1) ERα in the brain plays a key role in the estrogen-protective effects against ANG II-induced hypertension, and 2) that the subfornical organ (SFO) is a key site where ERα mediates these protective actions. In this study, a "floxed" ERα transgenic mouse line (ERα(flox)) was used to create models in which ERα was knocked down in the brain or just in ...

Journal: :American journal of physiology. Endocrinology and metabolism 2014
Petra Henning Claes Ohlsson Cecilia Engdahl Helen Farman Sara H Windahl Hans Carlsten Marie K Lagerquist

The effects of estrogen on bone are mediated mainly via estrogen receptor (ER)α. ERα in osteoclasts (hematopoietic origin) is involved in the trabecular bone-sparing effects of estrogen, but conflicting data are reported on the role of ERα in osteoblast lineage cells (nonhematopoietic origin) for bone metabolism. Because Cre-mediated cell-specific gene inactivation used in previous studies migh...

2015
Ying Liu Xiang Ao Zhaojun Jia Xiao-Yan Bai Zhaowei Xu Gaolei Hu Xiao Jiang Min Chen Huijian Wu

Estrogen receptors (ERs) are critical regulators of breast cancer development. Identification of molecules that regulate the function of ERs may facilitate the development of more effective breast cancer treatment strategies. In this study, we showed that the forkhead transcription factor FOXK2 interacted with ERα, and inhibited ERα-regulated transcriptional activities by enhancing the ubiquiti...

2017
Yuan Gao Zhaowei Wang Qiang Hao Weina Li Yujin Xu Juliang Zhang Wangqian Zhang Shuning Wang Shuo Liu Meng Li Xiaochang Xue Wei Zhang Cun Zhang Yingqi Zhang

Oestrogen receptor alpha (ERα) is a well-known target of endocrine therapy for ERα-positive breast cancer. ERα-negative cells, which are enriched during endocrine therapy, are associated with metastatic relapse. Here we determine that loss of ERα in the invasive front and in lymph node metastasis in human breast cancer is significantly correlated with lymphatic metastasis. Using in vivo and in ...

2012
Yung-Song Wang Wen-Wen Chou Ku-Chung Chen Hsin-Yun Cheng Ruey-Tay Lin Suh-Hang Hank Juo

BACKGROUND Estrogen receptor α (ERα) has been shown to protect against atherosclerosis. Methylation of the ERα gene can reduce ERα expression leading to a higher risk for cardiovascular disease. Recently, microRNAs have been found to regulate DNA methyltransferases (DNMTs) and thus control methylation status in several genes. We first searched for microRNAs involved in DNMT-associated DNA methy...

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