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https://www.readbyqxmd.com/read/28938710/hormone-therapy-use-and-risk-of-chronic-disease-in-the-nurses-health-study-a-comparative-analysis-with-the-women-s-health-initiative
#1
Shilpa N Bhupathiraju, Francine Grodstein, Bernard A Rosner, Meir J Stampfer, Frank B Hu, Walter C Willett, JoAnn E Manson
Observational studies and randomized controlled trials of menopausal hormone therapy (HT) and chronic disease risk appear to have divergent results for cardiovascular disease. However, differences may be related to a modifying effect of age, time since menopause, and HT formulation. In the Nurses' Health Study (NHS) (enrolling during 1980-1994 and following participants until 2002), we investigated associations between the use of oral conjugated equine estrogens (CEE) (0.625 mg/day) plus medroxyprogesterone acetate (MPA) (<10 mg/day) or oral CEE alone and cardiovascular disease, cancer, all-cause mortality, and other major endpoints among postmenopausal women, aged 50-79 years at HT initiation...
September 15, 2017: American Journal of Epidemiology
https://www.readbyqxmd.com/read/28938674/network-meta-analysis-of-the-efficacy-and-adverse-effects-of-several-treatments-for-advanced-metastatic-prostate-cancer
#2
Jing Wu, Wei-Kang Chen, Wei Zhang, Jin-Song Zhang, Jian-He Liu, Yong-Ming Jiang, Ke-Wei Fang
This network meta-analysis was conducted to compare the efficacy and adverse effects of several treatments for advanced/metastatic prostate cancer (PC). The PubMed and Cochrane Library databases were searched for randomized controlled trials of treatments for advanced/metastatic PC. Eighteen studies covering 6,340 patients were included in this analysis. The calculated were odds ratios, 95% confidence intervals, and the surface under the cumulative ranking (SUCRA) curve. Pairwise meta-analysis showed that overall survival rates achieved with radiotherapy or endocrine therapy were lower than obtained with radiotherapy + endocrine therapy...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938610/ghrelin-produces-antidepressant-like-effect-in-the-estrogen-deficient-mice
#3
Jie Fan, Bing Jin Li, Xue Feng Wang, Li Li Zhong, Ran Ji Cui
Recent evidence shows that ghrelin plays an important role in depression. However, it was little known whether ghrelin produces antidepressant-like effect in the ovariectomized mice. The present study was aimed to investigate the antidepressant-like effects of the ghrelin in ovariectomized mice. In the forced swim test, ghrelin significantly decreased immobility time, reversing the "depressive-like" effect observed in ovariectomized mice, and this effect was reversed by the tamoxifen. In addition, immunohistochemical study indicated that ghrelin treatment reversed the reductions in c-Fos expression induced by ovariectomy...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938480/dysregulation-of-the-anti-m%C3%A3-llerian-hormone-system-by-steroids-in-women-with-polycystic-ovary-syndrome
#4
Alice Pierre, Joëlle Taieb, Frank Giton, Michaël Grynberg, Salma Touleimat, Hady El Hachem, Renato Fanchin, Danielle Monniaux, Joëlle Cohen-Tannoudji, Nathalie di Clemente, Chrystèle Racine
Context: Anti-Müllerian hormone (AMH) and AMH type II receptor (AMHR2) are overexpressed in granulosa cells (GCs) from women with polycystic ovary syndrome (PCOS), the most common cause of female infertility. Objective: The aim of the study was to compare the regulation of the AMH/AMHR2 system by 5α-dihydrotestosterone (5α-DHT) and estradiol (E2) in GCs from control and PCOS women. Design, Setting, Patients: Experiments were performed on follicular fluids (FF) and GCs from women undergoing in vitro fertilization...
August 16, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28938464/sex-differences-in-steroid-receptor-co-expression-and-circadian-timed-activation-of-kisspeptin-and-rfrp-3-neurons-may-contribute-to-the-sexually-dimorphic-basis-of-the-lh-surge
#5
Matthew C Poling, Elena Y Luo, Alexander S Kauffman
In rodents, the ovulation-inducing LH surge is sexually dimorphic, occurring only in females, but the reasons for this sex difference are unclear. Two neuropeptides, kisspeptin and RFRP-3, are hypothesized to regulate the GnRH/LH surge. In females, both these systems show circadian changes coincident with the LH surge, but whether males show similar temporal changes under comparable hormonal conditions is unknown. Here, we evaluated circadian time (CT)-dependent changes in gene expression and neuronal activation of Kiss1 and Rfrp neurons of female and male mice given identical LH surge-inducing estrogen regimens...
August 9, 2017: Endocrinology
https://www.readbyqxmd.com/read/28938457/the-association-of-estrogen-receptor-%C3%AE-gene-variation-with-salt-sensitive-blood-pressure
#6
Worapaka Manosroi, Jia Wei Tan, Chevon M Rariy, Bei Sun, Mark O Goodarzi, Aditi R Saxena, Jonathan S Williams, Luminita H Pojoga, Jessica Lasky-Su, Jinrui Cui, Xiuqing Guo, Kent D Taylor, Yii-Der I Chen, Anny H Xiang, Willa A Hsueh, Leslie J Raffel, Thomas A Buchanan, Jerome I Rotter, Gordon H Williams, Ellen W Seely
Context: Hypertension in young women is uncommon compared to young men and older women. Estrogen appears to protect most women against hypertension with incidence increasing after menopause. Since some premenopausal women develop hypertension, estrogen may play a different role in these women. Genetic variations in the estrogen receptor (ER) are associated with cardiovascular disease. ER-β, encoded by ESR2, is the ER predominantly expressed in vascular smooth muscle. Objective: To determine an association of single nucleotide polymorphisms (SNPs) in ESR2 with salt-sensitivity of blood pressure (SSBP) and estrogen status in women...
September 5, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28938423/igfbp4-is-required-for-adipogenesis-and-influences-the-distribution-of-adipose-depots
#7
David E Maridas, Victoria E DeMambro, Phuong T Le, Subburaman Mohan, Clifford J Rosen
Insulin-like Growth Factor I (IGF-I) induces adipogenesis in vitro. IGF Binding Protein 4 (IGFBP4) is highly expressed in adipocytes and osteoblasts and is inhibitory of IGFs in vitro. We previously reported that Igfbp4 null mice (Igfbp4-/-) had decreased fat proportions at 8 and 16 weeks of age. However, the mechanism leading to the reduced adiposity remains unknown. The purpose of this study was to elucidate how IGFBP4 mediates adipose tissue development in vivo. Our results showed that inguinal (iWAT) and gonadal (gWAT) white adipose tissues from Igfbp4-/- mice had decreased weights and Pparγ expression...
July 27, 2017: Endocrinology
https://www.readbyqxmd.com/read/28938414/sex-and-tissue-specific-role-of-estrogen-sulfotransferase-in-energy-homeostasis-and-insulin-sensitivity
#8
Wojciech G Garbacz, Mengxi Jiang, Meishu Xu, Jun Yamauchi, H Henry Dong, Wen Xie
Estrogen Sulfotransferase (EST) catalyzes the sulfoconjugation and deactivation of estrogens. Previously we showed that loss of Est in male ob/ob mice, but not in female ob/ob mice, exacerbated the diabetic phenotype, but the underlying mechanism was unclear. Here we show that transgenic reconstitution of Est in the adipose tissue, but not in the liver, attenuated diabetic phenotype in Est deficient ob/ob mice (obe). Mechanistically, adipose reconstitution of Est in obe mice (oae) resulted in reduced local and systemic inflammation, improved insulin sensitivity, and increased energy expenditure...
September 5, 2017: Endocrinology
https://www.readbyqxmd.com/read/28938404/the-transcriptome-of-estrogen-independent-mammary-growth-in-female-mice-reveals-that-not-all-mammary-glands-are-created-equally
#9
Grace E Berryhill, Danielle G Lemay, Josephine F Trott, Lucila Aimo, Adam L Lock, Russell C Hovey
Allometric growth of ducts in the mammary glands (MG) is widely-held to be estrogen (E)-dependent. We previously discovered that the dietary fatty acid trans-10, cis-12 conjugated linoleic acid (CLA) stimulates E-independent allometric growth and TEB formation in ovariectomized mice. Given the similar phenotype induced by E and CLA, we investigated the shared and/or divergent mechanisms underlying these changes. We confirmed MG growth induced by CLA is temporally distinct from that elicited by E, then used RNA-Sequencing to compare the transcriptome of the MG during similar proliferative and morphological states...
July 27, 2017: Endocrinology
https://www.readbyqxmd.com/read/28938149/the-genetic-influence-in-fluorosis
#10
REVIEW
Sreemanta Pramanik, Depanwita Saha
Fluorosis, caused by ingestion of excess fluoride, is endemic in at least 25 countries across the globe, China and India being the worst affected among them. Dental, skeletal and non-skeletal are the major types of fluorosis affecting millions of people in these countries. A number of genetic epidemiological studies carried out by investigators have shown the evidence for association between genetic polymorphisms in candidate genes and differences in the susceptibility pattern of different types of fluorosis among individuals living in the same community and having the same environmental exposure...
September 15, 2017: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/28937850/environmental-transport-of-endogenous-dairy-manure-estrogens
#11
Inna E Popova, Matthew J Morra
Although estrogens originating from dairy manure applied to agricultural soils as a fertilizer can potentially contaminate surface water and groundwater, the variables that control transport are poorly understood. Our objective was to assess the potential for off-site movement of endogenous dairy cattle estrogens when manure is applied on fields at agronomically relevant fertilization rates. Estrone (E1), 17α-estradiol (α-E2), and 17β-estradiol (β-E2) were used in laboratory sorption, desorption, and transformation incubations with both manure and an agriculturally relevant soil...
September 22, 2017: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/28937296/comparison-of-e-cadherin-with-stat3-and-apoptosis-regulators-bak-and-bcl-xl-in-endometrioid-adenocarcinomas-of-different-er-alpha-immunoprofile
#12
Urszula Sulkowska, Andrzej Wincewicz, Luiza Kanczuga-Koda, Mariusz Koda, Stanislaw Sulkowski
E-cadherin is a factor of good prognosis in endometrioid adenocarcinomas, while STAT3 is an oncogenic driver of carcinogenesis. E-cadherin, Bak, Bcl-xL and STAT3 were immunohistochemically detected in 78 human endometrioid adenocarcinomas. E-cadherin correlated with STAT3 (p <. 001, r = 0.537) as well as Bak (p = .005, r = 0.314) and Bcl-xL (p = .002, r = 0.340) in the whole study group. In G2 tumors, E-cadherin associated with Bak (p = .021, r = 0.319), Bcl-xL (p = .026, r = 0...
September 22, 2017: Gynecological Endocrinology
https://www.readbyqxmd.com/read/28937041/evaluation-of-circulating-endometrial-cells-as-a-biomarker-for-endometriosis
#13
Ying Chen, Hong-Lan Zhu, Zhe-Wen Tang, Kuang Hong Neoh, Dong-Fang Ouyang, Heng Cui, Hong-Yan Cheng, Rui-Qiong Ma, Xue Ye, Ray Ps Han, Xiao-Hong Chang
BACKGROUND: Circulating endometrial cells (CECs) have been reported to be present in the peripheral blood of women with endometriosis (EM), providing clear and specific evidence of the presence of ectopic lesions. In this study, we established a method with a high detection rate of CECs, assessed the diagnostic value of CECs for EM and compared with serum CA125, and proposed a hypothesis for the pathogenesis of EM from the new perspective of CECs. METHODS: The participants were enrolled prospectively from October 2015 to July 2016...
October 5, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28936609/a-hierarchical-testing-strategy-for-micropollutants-in-drinking-water-regarding-their-potential-endocrine-disrupting-effects-towards-health-related-indicator-values
#14
Jochen Kuckelkorn, Regine Redelstein, Timon Heide, Jennifer Kunze, Sibylle Maletz, Petra Waldmann, Tamara Grummt, Thomas-Benjamin Seiler, Henner Hollert
In Germany, micropollutants that (may) occur in drinking water are assessed by means of the health-related indicator value (HRIV concept), developed by the German Federal Environment Agency. This concept offers five threshold values (≤ 0.01 to ≤ 3 μg l(-1)) depending on availability and completeness of data regarding genotoxicity, neurotoxicity, and germ cell-damaging potential. However, the HRIV concept is yet lacking integration of endocrine disruptors as one of the most prominent toxicological concerns in water bodies, including drinking water...
September 21, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28936482/menopause-and-ischemic-stroke-a-brief-review
#15
Shashank Shekhar, Olivia K Travis, Xiaochen He, Richard J Roman, Fan Fan
Ischemic stroke is one of the leading causes of morbidity and mortality worldwide. Females are protected against stroke before the onset of menopause. Menopause results in increased incidence of stroke when compared to men. The mechanisms of these differences remain to be elucidated. Considering that there is a postmenopausal phenomenon and females in general, are living longer sex hormone-dependent mechanisms have been postulated to be the primary factors responsible for the premenopausal protection from stroke and later to be responsible for the higher incidence and increased the severity of stroke after menopause...
2017: MOJ Toxicol
https://www.readbyqxmd.com/read/28936432/severity-of-premenstrual-symptoms-predicted-by-second-to-fourth-digit-ratio
#16
Yoshiki Kaneoke, Tomohiro Donishi, Akihiko Iwahara, Toshio Shimokawa
Women of reproductive age often experience a variety of unpleasant symptoms prior to the onset of menstruation. While genetics may influence the variability of these symptoms and their severity among women, the exact causes remain unknown. We hypothesized that symptom variability originates from differences in the embryonic environment and thus development caused by variation in exposure to sex hormones. We measured the second to fourth digit ratios (2D:4D) in 402 young women and investigated the potential relationships of this ratio premenstrual symptoms using a generalized linear model...
2017: Frontiers in Medicine
https://www.readbyqxmd.com/read/28936374/helical-tomotherapy-for-postmastectomy-radiotherapy-after-immediate-left-breast-reconstruction-a-case-study
#17
Dominique Mathieu, Nazanin Shahvary, Nicolas Côté, Kerianne Boulva, Léamarie Meloche-Dumas, Toni Vu, Erica Patocskai, Christina Bernier, David Roberge, Israel Fortin
A 43-year-old premenopausal female presented with a multicentric infiltrating lobular carcinoma of the left breast with axillary nodes metastasis. She underwent modified radical mastectomy with axillary lymph node dissection (level I and II) followed by a mixed autologous latissimus dorsi flap reconstruction with the addition of prosthesis. The final pathological analysis revealed a 6 cm invasive lobular carcinoma pT3N2aM0, grade III/III, estrogen and progesterone positive, human epidermal growth factor receptor 2 (HER2) negative, with 5/16 positive lymph nodes...
July 12, 2017: Curēus
https://www.readbyqxmd.com/read/28936333/kinetic-resolution-of-racemic-2-substituted-1-2-dihydroquinolines-via-asymmetric-cu-catalyzed-borylation
#18
Duanyang Kong, Suna Han, Rui Wang, Meina Li, Guofu Zi, Guohua Hou
A highly efficient kinetic resolution of racemic 2-substituted 1,2-dihydroquinolines via asymmetric Cu-catalyzed borylation has been realized for the first time. Under mild conditions, a variety of chiral 3-boryl-1,2,3,4-tetrahydroquinolines containing two vicinal stereogenic centers as well as the recovered 2-substituted 1,2-dihydroquinolines were afforded after 30 minutes in high yields with up to 99% ee (dr > 99 : 1) and over 98% ee values, respectively, corresponding to kinetic selectivity factors of up to 569...
June 1, 2017: Chemical Science
https://www.readbyqxmd.com/read/28935720/suppression-of-store-operated-ca-2-entry-by-activation-of-gper-contribution-to-a-clamping-effect-on-endothelial-ca-2-signaling
#19
Lara E Terry, Mark VerMeer, Jennifer Giles, Quang-Kim Tran
The G Protein-coupled Estrogen Receptor 1 (GPER, formerly a.k.a. GPR30) modulates many Ca(2+)-dependent activities in endothelial cells. However, the underlying mechanisms are poorly understood. We recently reported that GPER acts to prolong cytoplasmic Ca(2+) signals by interacting with and promoting inhibitory phosphorylation of the plasma membrane Ca(2+)-ATPase. In this study, we examined the role of GPER activation in modulating store-operated Ca(2+) entry (SOCE) via effects on the Stromal Interaction Molecule 1 (STIM1)...
September 21, 2017: Biochemical Journal
https://www.readbyqxmd.com/read/28935589/early-postnatal-exposure-to-endosulfan-interferes-with-the-normal-development-of-the-male-rat-mammary-gland
#20
Gabriela A Altamirano, Melisa B Delconte, Ayelen L Gomez, Ramiro Alarcón, Verónica L Bosquiazzo, Enrique H Luque, Mónica Muñoz-de-Toro, Laura Kass
Our aim was to evaluate whether postnatal exposure to endosulfan (ENDO) modifies mammary gland (MG) development in pre- and post-pubertal male rats. From postnatal day 1 (PND1) to PND7, male rats were injected subcutaneously every 48h with either corn oil (vehicle) or 600μg ENDO/kg.bw. On PND21 and PND60, MG and blood samples were collected. Estradiol (E2) and testosterone (T) serum levels, MG histology, collagen fiber organization, proliferation index, and estrogen (ESR1) and androgen receptor (AR) expressions were evaluated...
September 18, 2017: Toxicology Letters
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