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Estrogen Reduction

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https://www.readbyqxmd.com/read/28531779/overweight-postmenopausal-women-with-different-plasma-estradiol-concentrations-present-with-a-similar-pattern-of-energy-expenditure-and-substrate-oxidation-rate-before-and-after-a-fatty-meal-challenge
#1
Roberta de Souza Santos, Andressa Feijó da Silva Santos, Deborah J Clegg, Odilon Iannetta, Julio Sérgio Marchini, Vivian Marques Miguel Suen
Menopause-related withdrawal of ovarian estrogens is associated with reduced energy metabolism and overall impairment of substrate oxidation. Estradiol's withdrawal after menopause is associated with a reduction in energy metabolism and impaired substrate oxidation, which contributes to weight gain and visceral fat accumulation. Here we aimed to investigate the association between plasma estradiol concentrations and energy expenditure (EE)/substrate oxidation in a group of overweight postmenopausal women before and after a fatty meal challenge...
October 2016: Clinical Nutrition ESPEN
https://www.readbyqxmd.com/read/28527083/shared-mechanisms-of-epilepsy-migraine-and-affective-disorders
#2
Davide Zarcone, Simona Corbetta
Since the nineteenth century several clinical features have been observed in common between migraine and epilepsy (such as episodic attacks, triggering factors, presence of aura, frequent familiarity), but only in recent years researchers have really engaged in finding a common pathogenic mechanism. From studies of disease incidence, we understand how either migraine among patients with epilepsy or epilepsy among migraine patients are more frequent than in the general population. This association may result from a direct causality, by the same environmental risk factors and/or by a common genetic susceptibility...
May 2017: Neurological Sciences
https://www.readbyqxmd.com/read/28525302/treatment-of-endometriosis-associated-pain-with-elagolix-an-oral-gnrh-antagonist
#3
Hugh S Taylor, Linda C Giudice, Bruce A Lessey, Mauricio S Abrao, Jan Kotarski, David F Archer, Michael P Diamond, Eric Surrey, Neil P Johnson, Nelson B Watts, J Chris Gallagher, James A Simon, Bruce Carr, W Paul Dmowski, Nicholas Leyland, Jean P Rowan, W Rachel Duan, Juki Ng, Brittany Schwefel, James W Thomas, Rita I Jain, Kristof Chwalisz
Background Endometriosis is a chronic, estrogen-dependent condition that causes dysmenorrhea and pelvic pain. Elagolix, an oral, nonpeptide, gonadotropin-releasing hormone (GnRH) antagonist, produced partial to nearly full estrogen suppression in previous studies. Methods We performed two similar, double-blind, randomized, 6-month phase 3 trials (Elaris Endometriosis I and II [EM-I and EM-II]) to evaluate the effects of two doses of elagolix - 150 mg once daily (lower-dose group) and 200 mg twice daily (higher-dose group) - as compared with placebo in women with surgically diagnosed endometriosis and moderate or severe endometriosis-associated pain...
May 19, 2017: New England Journal of Medicine
https://www.readbyqxmd.com/read/28502486/jcl-roundtable-cardiovascular-disease-risk-reduction-in-menopausal-women
#4
REVIEW
William Virgil Brown, Martha Gulati, Gina P Lundberg
Ovarian failure occurs in most women during the late fifth decade or early sixth decade of life. This causes a number of changes in physiology as estrogen and progestin concentrations decline. These involve lipoprotein metabolism and the vasculature. The risk factors for large vessel disease increase, and dysfunction of the small resistance vessels responds with changes in blood flow to the skin causing unpleasant symptoms. These and other changes result in visits to the physician. A reassessment of risk factors and symptoms is needed to develop a new plan for effective management, both short term and long term...
March 2017: Journal of Clinical Lipidology
https://www.readbyqxmd.com/read/28501655/changes-of-auditory-event-related-potentials-in-ovariectomized-rats-injected-with-d-galactose-protective-role-of-rosmarinic-acid
#5
Deniz Kantar Gok, Enis Hidisoglu, Hakan Er, Alev Duygu Acun, Yusuf Olgar, Piraye Yargıcoglu
Rosmarinic acid (RA), which has multiple bioactive properties, might be a useful agent for protecting central nervous system against age related alterations. In this context, the purpose of the present study was to investigate possible protective effects of RA on mismatch negativity (MMN) component of auditory event-related potentials (AERPs) as an indicator of auditory discrimination and echoic memory in the ovariectomized (OVX) rats injected with D-galactose combined with neurochemical and histological analyses...
May 10, 2017: Neurotoxicology
https://www.readbyqxmd.com/read/28494696/oxidative-injuries-induced-by-maternal-low-protein-diet-in-female-brainstem
#6
Shirley Maria de Sousa, Glauber Rudá F Braz, Cristiane de Moura Freitas, David Filipe de Santana, Donald F Sellitti, Mariana P Fernandes, Claudia J Lagranha
Many studies have shown that a maternal low-protein diet increases the susceptibility of offspring to cardiovascular disease in later-life. Moreover, a lower incidence of cardiovascular disease in females than in males is understood to be largely due to the protective effect of high levels of estrogens throughout a woman's reproductive life. However, to our knowledge, the role of estradiol in moderating the later-life susceptibility of offspring of nutrient-deprived mothers to cardiovascular disease is not fully understood...
May 11, 2017: Nutritional Neuroscience
https://www.readbyqxmd.com/read/28490933/prognostic-and-predictive-value-of-low-estrogen-receptor-expression-in-breast-cancer
#7
A Bouchard-Fortier, L Provencher, C Blanchette, C Diorio
PURPOSE: Anti-hormonal therapy (tamoxifen) is recommended for estrogen receptor (er)-positive breast cancer (bca); however, its effect on low-receptor cancers is unclear. We retrospectively evaluated the effect of adjuvant tamoxifen in patients with weakly er-positive bca. METHODS: We identified 2221 bca patients who had been er-tested by ligand-based assay (lba) during 1976-1995 and who had been treated and followed until 2008. Cox proportional hazards models adjusted for age, body mass index, tumour size, nodal status, surgery, and chemotherapy were used to assess the effect of er level on bca survival in patients who received tamoxifen...
April 2017: Current Oncology
https://www.readbyqxmd.com/read/28489425/tissue-specific-effects-of-estrogen-on-glycerol-channel-aquaporin-7-expression-in-an-ovariectomized-mouse-model-of-menopause
#8
B Jin, X Chen, L Xing, W Xu, X Fu, J Zhu, X Mou, Z Wang, J Shu
OBJECTIVE: Elevated fat mass and redistribution of body fat are commonly observed in postmenopausal women. Aquaporin 7 (AQP7), a unique glycerol permeable integral membrane protein, has been associated with the onset of obesity. We hypothesized that estrogen supplementation could counteract this fat accumulation and redistribution through tissue-specific modulation of AQP7. METHODS: We measured fat depot weight, adipocyte size, and the expression of AQP7 and glycerol kinase (GK) in visceral and subcutaneous fat tissues of ovariectomized mice supplemented with or without 17β-estradiol...
May 10, 2017: Climacteric: the Journal of the International Menopause Society
https://www.readbyqxmd.com/read/28487444/the-longitudinal-transcriptional-response-to-neoadjuvant-chemotherapy-with-and-without-bevacizumab-in-breast-cancer
#9
Laxmi Silwal-Pandit, Silje Nord, Hedda von der Lippe Gythfeldt, Elen K Møller, Thomas Fleischer, Einar Rødland, Marit Krohn, Elin Borgen, Øystein Garred, Tone Olsen, Phuong Vu, Helle Skjerven, Anne Fangberget, Marit M Holmen, Ellen Schlichting, Elisabeth Wille, Mette Nordberg Stokke, Hans Kristian Moen Vollan, Vessela N Kristensen, Anita Langerød, Steinar Lundgren, Erik A Wist, Bjørn Naume, Ole Christian Lingjerde, Anne-Lise Borresen-Dale, Olav Engebraaten
Chemotherapy induced alterations to gene expression are due to transcriptional reprogramming of tumor cells or subclonal adaptations to treatment. The effect on whole-transcriptome mRNA expression was investigated in a randomized phase II clinical trial to assess the effect of neoadjuvant chemotherapy with the addition of bevacizumab. <br />Experimental Design: Tumor biopsies and whole-transcriptome mRNA profiles were obtained at three fixed time points with 66 patients in each arm.  Altogether, 358 specimens from 132 patients were available, representing the transcriptional state before treatment start, at 12 weeks and after treatment (25 weeks)...
May 9, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28480526/profile-of-cell-proliferation-and-apoptosis-activated-by-the-intrinsic-and-extrinsic-pathways-in-the-prostate-of-aging-rats
#10
Amanda C R Gonzaga, Gabriel H Campolina-Silva, Hipácia Werneck-Gomes, Júnia D Moura-Cordeiro, Letícia C Santos, Germán A B Mahecha, Mônica Morais-Santos, Cleida A Oliveira
BACKGROUND: Estrogens acting through the receptors ERα and ERβ participate in prostate normal growth and cancer. ERβ is highly expressed in the prostate epithelium, playing pro-apoptotic, anti-proliferative, and pro-differentiation roles. Apoptosis is activated by the intrinsic pathway after castration and by the extrinsic pathway after ERβ agonist treatment. This differential activation of apoptotic pathways is important since a major problem in the treatment of prostate cancer is the recurrence of tumors after androgen withdrawal...
June 2017: Prostate
https://www.readbyqxmd.com/read/28472669/the-role-of-estrogen-g-protein-coupled-receptor-30-gpr30-and-sexual-experience-in-sexual-incentive-motivation-in-male-rats
#11
W R Hawley, C Battista, S R Divack, N B Morales Núñez
Male rats exhibit reductions in sexual motivation following systemic administration of drugs that inhibit the conversion of testosterone to estrogen, which indicates that estrogen signaling plays a role in male rat sexual motivation. Given that estrogen G-protein coupled receptor 30 (GPR30) is expressed in brain areas that are important for male sexual behaviors and endocrine function, the primary aim of the current study was to examine the role that GPR30 plays in sexual motivation in both sexually naïve and sexually experienced male rats...
May 1, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28472101/estradiol-mediated-improvements-in-adipose-tissue-insulin-sensitivity-are-related-to-the-balance-of-adipose-tissue-estrogen-receptor-%C3%AE-and-%C3%AE-in-postmenopausal-women
#12
Young-Min Park, Rocio I Pereira, Christopher B Erickson, Tracy A Swibas, Kimberly A Cox-York, Rachael E Van Pelt
We recently demonstrated that short-term estradiol (E2) treatment improved insulin-mediated suppression of lipolysis in postmenopausal women, but to a greater extent in those who were late compared to early postmenopausal. In this follow-up study we tested whether subcutaneous adipose tissue (SAT) expression of estrogen receptors (ER) α and β differs between early and late postmenopausal women. We further tested whether the balance of ERα to ERβ in SAT determined the effect of E2 on SAT insulin sensitivity...
2017: PloS One
https://www.readbyqxmd.com/read/28467804/androgen-receptor-status-predicts-development-of-brain-metastases-in-ovarian-cancers
#13
Gloria Mittica, Rebecca Senetta, Giulia Scotto, Massimo Aglietta, Furio Maggiorotto, Eleonora Ghisoni, Sofia Genta, Renzo Boldorini, Claudia Manini, Isabella Morra, Roberta Buosi, Anna Sapino, Paola Cassoni, Giorgio Valabrega
Brain metastases are uncommon localizations in epithelial ovarian cancer (EOC), their reported incidence is increasing and no predictive biomarkers have been identified yet. Goals of this study were: i) to define a possible association between Estrogen Receptor (ER), Progesterone Receptor (PR), Androgen Receptor (AR),human EGF receptor 2 (HER2) and brain progression in EOC patients, and ii) to identify differences in ER, PR, AR and HER2 protein expression from primary EOC and its matched resected brain metastasis...
April 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/28467729/long-term-follow-up-of-the-intergroup-exemestane-study
#14
James P Morden, Isabel Alvarez, Gianfilippo Bertelli, Alan S Coates, Robert Coleman, Lesley Fallowfield, Jacek Jassem, Stephen Jones, Lucy Kilburn, Per E Lønning, Olaf Ortmann, Claire Snowdon, Cornelis van de Velde, Jørn Andersen, Lucia Del Mastro, David Dodwell, Stig Holmberg, Hanna Nicholas, Robert Paridaens, Judith M Bliss, R Charles Coombes
Purpose The Intergroup Exemestane Study, an investigator-led study of 4,724 postmenopausal patients with early breast cancer (clinical trial information: ISRCTN11883920), has previously demonstrated that a switch from adjuvant endocrine therapy after 2 to 3 years of tamoxifen to exemestane was associated with clinically relevant improvements in efficacy. Here, we report the final efficacy analyses of this cohort. Patients and Methods Patients who remained disease free after 2 to 3 years of adjuvant tamoxifen were randomly assigned to continue tamoxifen or switch to exemestane to complete a total of 5 years of adjuvant endocrine therapy...
May 3, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28466123/the-role-of-quantitative-estrogen-receptor-status-in-predicting-tumor-response-at-surgery-in-breast-cancer-patients-treated-with-neoadjuvant-chemotherapy
#15
REVIEW
Jacques Raphael, Sonal Gandhi, Nim Li, Fang-I Lu, Maureen Trudeau
PURPOSE: Estrogen receptor (ER) negative (-) breast cancer (BC) patients have better tumor response rates than ER-positive (+) patients after neoadjuvant chemotherapy (NCT). We conducted a retrospective review using the institutional database "Biomatrix" to assess the value of quantitative ER status in predicting tumor response at surgery and to identify potential predictors of survival outcomes. METHODS: Univariate followed by multivariable regression analyses were conducted to assess the association between quantitative ER and tumor response assessed as tumor size reduction and pathologic complete response (pCR)...
May 2, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28463874/time-to-transient-and-stable-reductions-in-hot-flush-frequency-in-postmenopausal-women-using-conjugated-estrogens-bazedoxifene
#16
JoAnn V Pinkerton, Andrew G Bushmakin, Lucy Abraham, Barry S Komm, Joel Bobula
OBJECTIVE: This post hoc analysis estimates time to transient and stable reductions in hot flush frequency in postmenopausal women using conjugated estrogens/bazedoxifene. METHODS: In the 12-week Selective Estrogens, Menopause, and Response to Therapy (SMART)-2 trial of conjugated estrogens/bazedoxifene 0.45 mg/20 mg and 0.625 mg/20 mg, women with at least seven moderate/severe hot flushes per day or 50 per week at screening recorded frequency of moderate/severe hot flushes in diaries...
May 1, 2017: Menopause: the Journal of the North American Menopause Society
https://www.readbyqxmd.com/read/28460643/regular-and-low-dose-aspirin-other-non-steroidal-anti-inflammatory-medications-and-prospective-risk-of-her2-defined-breast-cancer-the-california-teachers-study
#17
Christina A Clarke, Alison J Canchola, Lisa M Moy, Susan L Neuhausen, Nadia T Chung, James V Lacey, Leslie Bernstein
BACKGROUND: Regular users of aspirin may have reduced risk of breast cancer. Few studies have addressed whether risk reduction pertains to specific breast cancer subtypes defined jointly by hormone receptor (estrogen and progesterone receptor) and human epidermal growth factor receptor 2 (HER2) expression. This study assessed the prospective risk of breast cancer (overall and by subtype) according to use of aspirin and other non-steroidal anti-inflammatory medications (NSAIDs) in a cohort of female public school professionals in California...
May 1, 2017: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/28459512/lichong-decoction-reduces-matrix-metalloproteinases-2-expression-but-increases-tissue-inhibitors-of-matrix-metalloproteinases-2-expression-in-a-rat-model-of-uterine-leiomyoma
#18
Yasong Wang, Donghua Li, Xin Xu, Ruiya Qian, Yalan Zhang, Yuhua Huang, Jianguo Geng, Xiaoli Zou, Hongjuan Han, Wufang Zhang
OBJECTIVE: To study the effect of Lichong decoction (LD) on expression of matrix metalloproteinase- 2 (MMP-2) and metalloproteinase-2 (TIMP-2) in a rat model of uterine leiomyoma (UL). METHODS: UL was induced in rats using exogenous estrogen and progesterone. LD was administered (p.o.) for 4 weeks, and mifepristone (RU-486) used as a control. To observe the effect of LD on the uterine coefficient and uterine transverse diameter, a radioimmunoassay method was used to detect serum levels of sex hormones...
August 2016: Journal of Traditional Chinese Medicine, Chung i Tsa Chih Ying Wen Pan
https://www.readbyqxmd.com/read/28440733/morphological-and-morphometric-analysis-of-the-effects-of-intralesional-tamoxifen-on-keloids
#19
Lauro R Soares-Lopes, Ione M Soares-Lopes, Lauro Ll Filho, Airlane P Alencar, Benedito B da Silva
The aim of this study was to evaluate the effect of intralesional tamoxifen on keloids, particularly on the concentration of fibroblasts, dermal inflammatory infiltrate, and collagen degeneration. A prospective study was carried out to evaluate keloids in 13 patients of both genders pre- and post-treatment with intralesional tamoxifen. Two samples of keloid lesions were obtained by 4-mm punch biopsies during the study: the first at the time of diagnostic confirmation of keloid and the other eight weeks later at the end of intralesional tamoxifen treatment...
May 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28440394/g-protein-coupled-receptor-30-mediates-the-effects-of-estrogen-on-endothelial-cell-tube-formation-in%C3%A2-vitro
#20
Liyuan Zhou, Hong Chen, Xun Mao, Hongbo Qi, Philip N Baker, Hua Zhang
The placenta is the exchange organ between the mother and the fetus. The inadequate function of this organ is associated with a number of pregnancy disorders. Hypoxia and oxidative stress during placental development may induce endothelial dysfunction, resulting in the reduction in the perfusion of the placenta. During pregnancy, the levels of estrogen are increased. Decreased estrogen levels have been reported in women with preeclampsia. However, whether estrogen is involved in placental angiogenesis remains unclear...
June 2017: International Journal of Molecular Medicine
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