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Estrogen replacement

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https://www.readbyqxmd.com/read/27919438/does-an-increased-body-mass-index-affect-endometrial-gene-expression-patterns-in-infertile-patients-a%C3%A2-functional-genomics-analysis
#1
Ioanna A Comstock, Patricia Diaz-Gimeno, Sergio Cabanillas, Jose Bellver, Patricia Sebastian-Leon, Meera Shah, Amy Schutt, Cecilia T Valdes, Maria Ruiz-Alonso, Diana Valbuena, Carlos Simon, Ruth B Lathi
OBJECTIVE: To analyze the transcriptomic profile of endometrial gene alterations during the window of implantation in infertile obese patients. DESIGN: Multicenter, prospective, case-control study. SETTING: Three academic medical centers for reproductive medicine. PATIENT(S): Infertile patients, stratified into body mass index (BMI) categories according to the World Health Organization guidelines, were included in the study...
December 2, 2016: Fertility and Sterility
https://www.readbyqxmd.com/read/27917104/thirty-eight-year-follow-up-of-two-sibling-lipoid-congenital-adrenal-hyperplasia-patients-due-to-homozygous-steroidogenic-acute-regulatory-stard1-protein-mutation-molecular-structure-and-modeling-of-the-stard1-l275p-mutation
#2
Khalil Khoury, Elie Barbar, Youssef Ainmelk, Annie Ouellet, Pierre Lavigne, Jean-Guy LeHoux
Objective: Review the impact of StAR (STARD1) mutations on steroidogenesis and fertility in LCAH patients. Examine the endocrine mechanisms underlying the pathology of the disorder and the appropriate therapy for promoting fertility and pregnancies. Design: Published data in the literature and a detailed 38-year follow-up of two sibling LCAH patients. Molecular structure and modeling of the STARD1 L275P mutation. Setting: University hospital. Patients: Patient A (46,XY female phenotype) and patient B (46,XX female) with LCAH bearing the L275P mutation in STARD1...
2016: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/27916781/gradually-increasing-ethinyl-estradiol-for-turner-syndrome-may-produce-good-final-height-but-not-ideal-bmd
#3
Yukihiro Hasegawa, Daisuke Ariyasu, Masako Izawa, Junko Igaki-Miyamoto, Mami Fukuma, Megumi Hatano, Hiroko Yagi, Masahiro Goto
Estrogen replacement therapy in Turner syndrome should theoretically mimic the physiology of healthy girls. The objective of this study was to describe final height and bone mineral density (BMD) in a group of 17 Turner syndrome patients (group E) who started their ethinyl estradiol therapy with an ultra-low dosage (1-5 ng/kg/day) from 9.8˜13.7 years. The subjects in group E had been treated with GH 0.35 mg/kg/week since the average age of 7.4 years. The 30 subjects in group L, one of the historical groups, were given comparable doses of GH, and conjugated estrogen 0...
December 2, 2016: Endocrine Journal
https://www.readbyqxmd.com/read/27914563/differential-effects-of-testosterone-and-estradiol-on-clitoral-function-an-experimental-study-in-rats
#4
Paolo Comeglio, Ilaria Cellai, Sandra Filippi, Chiara Corno, Francesca Corcetto, Annamaria Morelli, Elena Maneschi, Elisa Maseroli, Edoardo Mannucci, Massimiliano Fambrini, Mario Maggi, Linda Vignozzi
INTRODUCTION: Female sexual response is a complex phenomenon in which psychological, neurologic, and vascular mechanisms and hormonal factors interact. During the arousal phase, they cooperate to increase genital blood flow, thus inducing engorgement of the clitoris and lubrication of the vagina. Regulation of vascular and non-vascular smooth muscle tone is the crucial event in the erectile process. Preclinical studies have suggested that nitric oxide (NO) is the main vasodilator neurotransmitter modulating, through the second messenger cyclic guanosine monophosphate (cGMP), clitoral flow vessels...
December 2016: Journal of Sexual Medicine
https://www.readbyqxmd.com/read/27911148/effects-of-chronic-estrogen-administration-in-the-ventromedial-nucleus-of-the-hypothalamus-vmh-on-fat-and-bone-metabolism-in-ovariectomized-rats
#5
Z Zhang, J Liu, A G Veldhuis-Vlug, Y Su, E Foppen, B C J van der Eerden, M Koedam, N Bravenboer, A Kalsbeek, A Boelen, E Fliers, P H Bisschop
Estrogen deficiency after ovariectomy (OVX) results in increased adiposity and bone loss, which can be prevented by systemic 17-β estradiol (E2) replacement. Studies in transgenic mice suggested that in addition to direct actions of estrogen in peripheral tissues, also estrogen signaling in the hypothalamus regulates fat distribution and bone metabolism. We hypothesized that the protective effect of systemic E2 on fat and bone metabolism in the OVX model is partly mediated through the ventromedial nucleus of the hypothalamus (VMH)...
December 2016: Endocrinology
https://www.readbyqxmd.com/read/27909901/obesity-and-breast-cancer
#6
Renée T Fortner, Verena Katzke, Tilman Kühn, Rudolf Kaaks
The relationship between adiposity and breast cancer risk and prognosis is complex, with associations that differ depending on when body size is assessed (e.g., pre- vs. postmenopausal obesity) and when breast cancer is diagnosed (i.e., pre- vs. postmenopausal disease). Further, the impact of obesity on risk differs by tumor hormone receptor status (e.g., estrogen (ER) and progesterone (PR) receptor) and, among postmenopausal women, use of exogenous hormones (i.e., hormone replacement therapy (HRT)). In the context of these complexities, this review focuses on associations between childhood and adolescent adiposity, general adiposity, weight changes (i...
2016: Recent Results in Cancer Research
https://www.readbyqxmd.com/read/27906970/poor-compliance-to-hormone-therapy-and-decreased-bone-mineral-density-in-women-with-premature-ovarian-insufficiency
#7
Anne Bachelot, Carole Nicolas, Solenne Gricourt, Jérôme Dulon, Monique Leban, Jean Louis Golmard, Philippe Touraine
Premature ovarian insufficiency leads to through infertility and estrogen deficiency. Optimal management encompasses estrogen replacement therapy. Long-term outcome of women with POI is not known. We design a study to evaluate the medical care, hormone replacement therapy compliance and bone mineral density (BMD) in POI women with at least a five-year follow-up after the first evaluation. One hundred and sixty-two patients (37.3±8.0 years) were evaluated (follow-up 7.9±2.8 years). Sixty-nine patients (42...
2016: PloS One
https://www.readbyqxmd.com/read/27905115/treatment-for-hereditary-angioedema-with-normal-c1-inh-and-specific-mutations-in-the-f12-gene-hae-fxii
#8
K Bork, K Wulff, G Witzke, J Hardt
Hereditary angioedema with normal C1 esterase inhibitor and mutations in the F12 gene (HAE-FXII) is associated with skin swellings, abdominal pain attacks, and the risk of asphyxiation due to upper airway obstruction. It occurs nearly exclusively in women. We report our experience treating HAE-FXII with discontinuation of potential trigger factors and drug therapies. The study included 72 patients with HAE-FXII. Potential triggers included estrogen-containing oral contraceptives (eOC), hormonal replacement therapy, or angiotensin-converting enzyme inhibitors...
November 6, 2016: Allergy
https://www.readbyqxmd.com/read/27892794/effects-of-repeated-9-and-30-day-exposure-to-extremely-low-frequency-electromagnetic-fields-on-social-recognition-behavior-and-estrogen-receptors-expression-in-olfactory-bulb-of-wistar-female-rats
#9
C Bernal-Mondragón, V Arriaga-Avila, E Martínez-Abundis, B Barrera-Mera, O Mercado-Gómez, R Guevara-Guzmán
OBJECTIVE: We investigated the short- and long-term effects of extremely low-frequency electromagnetic fields (EMF) on social recognition behavior and expression of α- and β-estrogen receptors (ER). METHODS: Rats were exposed to 60-Hz electromagnetic fields for 9 or 30 days and tested for social recognition behavior. Immunohistochemistry and western blot assays were performed to evaluate α- and β-ER expression in the olfactory bulb of intact, ovariectomized (OVX), and ovariectomized+estradiol (E2) replacement (OVX+E2)...
November 28, 2016: Neurological Research
https://www.readbyqxmd.com/read/27889857/accurate-control-of-17%C3%AE-estradiol-long-term-release-increases-reliability-and-reproducibility-of-preclinical-animal-studies
#10
Céline Gérard, Anne Gallez, Charline Dubois, Pierre Drion, Philippe Delahaut, Etienne Quertemont, Agnès Noël, Christel Pequeux
Estrogens are the subject of intensive researches aiming to elucidate their mechanism of action on the various tissues they target and especially on mammary gland and breast cancer. The use of ready-to-use slow releasing devices to administer steroids, especially estrogens, to small experimental animals remains the method of choice in terms of animal well-being and of safety for both the researcher and the animal. In this study, we evaluated and compared, in vitro and in vivo, the release kinetic of estradiol (E2) over sixty days from two different slow-releasing systems: the matrix pellet (MP) and the reservoir implant (RI)...
November 26, 2016: Journal of Mammary Gland Biology and Neoplasia
https://www.readbyqxmd.com/read/27866938/ovulation-induction-in-polycystic-ovary-syndrome-current-options
#11
REVIEW
Richard S Legro
There are a variety of effective treatment options to induce ovulation in women with polycystic ovary syndrome (PCOS). The most effective treatments are primarily reproductive and target the hypothalamic-pituitary-ovarian (HPO) axis. Letrozole, an aromatase inhibitor, is headed toward replacing clomiphene, a selective estrogen receptor modulator, as the first-choice option. Metabolic treatments likely work indirectly through the HPO axis. Many metabolic treatments have shown initial promise and later failed (troglitozone or d-chiro-inositol) or disappointed (metformin); further studies are needed of newer agents to treat type 2 diabetes...
September 21, 2016: Best Practice & Research. Clinical Obstetrics & Gynaecology
https://www.readbyqxmd.com/read/27831918/17%C3%AE-estradiol-suppresses-visceral-adipogenesis-and-activates-brown-adipose-tissue-specific-gene-expression
#12
Saad Misfer Al-Qahtani, Galyna Bryzgalova, Ismael Valladolid-Acebes, Marion Korach-André, Karin Dahlman-Wright, Suad Efendić, Per-Olof Berggren, Neil Portwood
Both functional ovaries and estrogen replacement therapy (ERT) reduce the risk of type 2 diabetes (T2D). Understanding the mechanisms underlying the antidiabetic effects of 17β-estradiol (E2) may permit the development of a molecular targeting strategy for the treatment of metabolic disease. This study examines how the promotion of insulin sensitivity and weight loss by E2 treatment in high-fat-diet (HFD)-fed mice involve several anti-adipogenic processes in the visceral adipose tissue. Magnetic resonance imaging (MRI) revealed specific reductions in visceral adipose tissue volume in HFD+E2 mice, compared with HFD mice...
November 10, 2016: Hormone Molecular Biology and Clinical Investigation
https://www.readbyqxmd.com/read/27831658/postmenopausal-vulvovaginal-atrophy-vva-is-positively-improved-by-topical-hyaluronic-acid-application-a-prospective-observational-study
#13
M Origoni, C Cimmino, G Carminati, E Iachini, C Stefani, S Girardelli, S Salvatore, M Candiani
OBJECTIVE: To evaluate the effectiveness of a topical vaginal preparation containing hyaluronic acid in controlling signs and symptoms correlated with postmenopausal vulvovaginal atrophy (VVA). PATIENTS AND METHODS: A prospective, observational study has been performed at the Obstetrics and Gynecology Department of the Vita Salute San Raffaele University of Milan, Italy. Forty-six (46) consecutive postmenopausal women complaining of genital discomfort due to postmenopausal estrogen lack have been enrolled...
October 2016: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/27829580/inhibitory-effect-of-ethinylestradiol-on-coagulation-factors-in-rats
#14
Yanira Franco-Murillo, Ruth Jaimez
Epidemiological and experimental data have indicated the beneficial and adverse effects of estrogenic replacement therapy. In the present study, we explored the effect of ethinylestradiol (EE) and 17β-estradiol (E2) on screening tests, prothrombin time (PT) and activated partial thromboplastin time (APTT), as well as the activity of coagulation factors (FVII, FX, FXI, and FXII) in male Wistar rats. Animals were injected subcutaneously during three consecutive days with EE or E2 (1, 3, 10, and 30 mg/kg) and propylene glycol (0...
November 9, 2016: Experimental Animals
https://www.readbyqxmd.com/read/27823753/alzheimer-s-disease-apolipoprotein-e-and-hormone-replacement-therapy
#15
REVIEW
H Depypere, A Vierin, S Weyers, A Sieben
Alzheimer's disease is the most frequent cause of dementia in older patients. The prevalence is higher in women than in men. This may be the result of both the higher life expectancy of women and the loss of neuroprotective estrogen after menopause. Earlier age at menopause (spontaneous or surgical) is associated with an enhanced risk of developing Alzheimer's disease. Therefore, it is postulated that estrogen could be protective against it. If so, increasing exposure to estrogen through the use of postmenopausal hormone replacement could also be protective against Alzheimer's disease...
December 2016: Maturitas
https://www.readbyqxmd.com/read/27817132/inhibitory-effect-of-estrogen-receptor-beta-on-p2x3-receptors-during-inflammation-in-rats
#16
Qian Jiang, Wen-Xin Li, Jia-Run Sun, Tian-Tian Zhu, Juan Fan, Li-Hua Yu, Geoffrey Burnstock, Hua Yang, Bei Ma
Estrogen receptor beta (ERβ) has been shown to play a therapeutic role in inflammatory bowel disease (IBD). However, the mechanism underlying how ERβ exerts therapeutic effects and its relationship with P2X3 receptors (P2X3R) in rats with inflammation is not known. In our study, animal behavior tests, visceromotor reflex recording, and Western blotting were used to determine whether the therapeutic effect of ERβ in rats with inflammation was related with P2X3R. In complete Freund adjuvant (CFA)-induced chronic inflammation in rats, paw withdrawal threshold was significantly decreased which were then reversed by systemic injection of ERβ agonists, DPN or ERB-041...
November 5, 2016: Purinergic Signalling
https://www.readbyqxmd.com/read/27814578/lipid-raft-er-signalosome-malfunctions-in-menopause-and-alzheimer-s-disease
#17
Ana Canerina-Amaro, Luis G Hernandez-Abad, Isidre Ferrer, David Quinto-Alemany, Fatima Mesa-Herrera, Carla Ferri, Ricardo A Puertas-Avendano, Mario Diaz, Raquel Marin
The increase in the incidence of Alzheimer's disease (AD) in old women may be attributable to estrogen deficiency, and estrogen replacement therapy may be useful in preventing or delaying the onset of this disease. In neuronal membranes, 17 beta-estradiol interacts with estrogen receptors (mERs) located in lipid raft signalosomes which trigger neuroprotective responses by anchoring to scaffolding caveolin-1 complexed with other proteins. We suggest that mER-signalosome malfunctions in AD and by menopause due to development of aberrations in these microstructures...
January 1, 2017: Frontiers in Bioscience (Scholar Edition)
https://www.readbyqxmd.com/read/27805259/hormone-replacement-therapy-with-estrogens-may-reduce-lamotrigine-serum-concentrations-a-matched-case-control-study
#18
Arne Reimers
Lamotrigine (LTG) is an antiepileptic drug that is metabolized via glucuronidation. Since the glucuronidizing enzyme is inducible by estrogens, LTG serum concentrations may fall by 50-60% when combined with hormonal contraceptives that contain ethinyl estradiol (EE). Little is known about a possible interaction between estrogens used for hormone replacement therapy (HRT) and LTG, and the few available data are conflicting. Data from serum samples analyzed for LTG were therefore retrieved from a routine therapeutic drug monitoring database...
November 2, 2016: Epilepsia
https://www.readbyqxmd.com/read/27793381/hormone-replacement-therapy-in-young-women-with-surgical-primary-ovarian-insufficiency
#19
REVIEW
Philip M Sarrel, Shannon D Sullivan, Lawrence M Nelson
Bilateral oophorectomy performed in women before they are menopausal induces surgical primary ovarian insufficiency, an acute and chronic deficiency of the hormones normally produced by the ovaries. Without hormone replacement therapy (HRT) most of these women develop severe symptoms of estrogen (E) deficiency and are at increased risk for osteoporosis, cardiovascular disease, cognitive decline, dementia, and the associated increases in morbidity and mortality. In cases in which a hysterectomy has been performed at the time of bilateral oophorectomy transdermal or transvaginal E2 replacement therapy without cyclic progestin replacement is the optimum hormonal management for these women...
December 2016: Fertility and Sterility
https://www.readbyqxmd.com/read/27757385/the-effect-of-pueraria-lobata-rehmannia-glutinosa-and-exercise-on-fatty-acid-transporters-expression-in-ovariectomized-rats-skeletal-muscles
#20
Hye Jin Kim, Hae Min Yoon, Oran Kwon, Won Jun Lee
PURPOSE: Pueraria lobata/rehmannia glutinosa (PR) and exercise have been receiving a lot of attention from postmenopausal women, as a result of the side effects of estrogen replacement therapy. However, the effects of PR and exercise on fatty acid transporters (FATPs), which play essential role in fatty acid transport, have not been studied. In this study, we evaluated the effects of PR and aerobic exercise on FATP1, FABPpm and FAT/CD36 expression in ovariectomized rat skeletal muscles...
September 2016: Journal of Exercise Nutrition & Biochemistry
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