objective: although much is known about estrogen and progesterone, their toxicity or protective effects on hepatocytes are yet to be fully understood. this study investigated the probable oxidant or antioxidant effects of estrogen and progesterone on hepg2 cell line in the presence or absence of h2o2. methods: hepg2 cells were cultured with two concentrations of estrogen and progesterone (10pm ...

estrogen replacement therapy (ert) in postmenopausal women may decrease the risk of coronary artery diseases (cad). we hypothesized that nitric oxide (no) releasing due to ert may be the essential factor by which endothelial permeability decreases. four groups of ovariectomized rabbits were under investigation for five weeks. groups 1 & 4 received high cholesterol diet and other two groups (2 &...

objectives we undertook this study to compare the results of hormone receptor assessment in cnb and surgical samples on our patients. patients and methods hormone receptor status was determined in cnb and surgical samples in breast cancer patients whose cnb and operation had been performed in this institute from 2009 to 2011 and had not undergone neoadjuvant chemotherapy. results about 350 pati...

Phytoestrogens are polyphenolic non-steroidal plant compounds with estrogen like activity exerted through estrogen receptors. These receptors are distributed in several tissues such as male and female reproductive systems, bones, cardiovascular and central nervous systems. These natural phenolic compounds include isoflavonoids, flavonoids, lignans and stilbenes. Isoflavonoids are the most studi...

Introduction. Sex differences in the course and outcomes of disease were found during COVID- 19 pandemic. Aim. To summarize knowledge about mechanisms underlying sex COVID-19, with a focus on role estrogen. Materials methods. We conducted study using various databases until September 2022 for keywords “estrogen” “COVID-19”. All articles published English. Results. The review discusses involveme...

Endometrial cancer is one of the most common gynaecological malignancies worldwide. Histologically, two types endometrial with morphological and molecular differences also therapeutic implications have been identified. Type I has an endometrioid morphology estrogen-dependent, while II appears non-endometrioid differentiation follows estrogen-unrelated pathway. Understanding biology genetics cru...

Background: The role of estrogen and progesterone in stroke is suggested in previous studies, but yet is controversial. Objectives: Comparing the plasma levels of estrogen and progesterone and their ratio in ischemic stroke patients and healthy population. Materials and Methods: This cross-sectional comparative study was conducted from March to September of 2013. Sixty-six female patients older...

in a double blind, parallel-group, clinical trial we compared the effects of conjugated estrogen with estrogen plus methyltestosterone in surgically menopausal women. in this study, 251 women were randomly assigned to one of the two regimens: 1-conjugated estrogen 0.625 mg/day +placebo. 2-conjungated estrogen 0.625 mg/day+methyltestosterone 1.25 mg/day (e+a group). study parameters were psychol...

background: effects of estrogen on bone metabolism and its protective role on prevention of osteoporosis are well   documented. however, the efficacy of estrogen treatment on bone healing is not well investigated. the drug can be delivered both systemically or locally to the bone with differences in concentrations and side effects. the aim of this study was to investigate the effect of local an...