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https://www.readbyqxmd.com/read/28093732/long-term-hormone-therapy-for-perimenopausal-and-postmenopausal-women
#1
REVIEW
Jane Marjoribanks, Cindy Farquhar, Helen Roberts, Anne Lethaby, Jasmine Lee
BACKGROUND: Hormone therapy (HT) is widely provided for control of menopausal symptoms and has been used for the management and prevention of cardiovascular disease, osteoporosis and dementia in older women. This is an updated version of a Cochrane review first published in 2005. OBJECTIVES: To assess effects of long-term HT (at least 1 year's duration) on mortality, cardiovascular outcomes, cancer, gallbladder disease, fracture and cognition in perimenopausal and postmenopausal women during and after cessation of treatment...
January 17, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28093550/experience-dependent-homeostasis-of-noise-at-inhibitory-synapses-preserves-information-coding-in-adult-visual-cortex
#2
Ming Gao, Jessica L Whitt, Shiyong Huang, Angela Lee, Stefan Mihalas, Alfredo Kirkwood, Hey-Kyoung Lee
Synapses are intrinsically 'noisy' in that neurotransmitter is occasionally released in the absence of an action potential. At inhibitory synapses, the frequency of action potential-independent release is orders of magnitude higher than that at excitatory synapses raising speculations that it may serve a function. Here we report that the frequency of action potential-independent inhibitory synaptic 'noise' (i.e. miniature inhibitory postsynaptic currents, mIPSCs) is highly regulated by sensory experience in visual cortex...
March 5, 2017: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/28091359/phyto-oestrogens-and-colorectal-cancer-risk-a-systematic-review-and-dose-response-meta-analysis-of-observational-studies
#3
Ruijingfang Jiang, Akke Botma, Anja Rudolph, Anika Hüsing, Jenny Chang-Claude
Epidemiological studies suggest that soya consumption as a source of phyto-oestrogens and isoflavones may be associated with a reduced risk of colorectal cancer. However, findings have not yet been synthesised for all groups of phyto-oestrogens. A meta-analysis was conducted to quantify the association between phyto-oestrogens and colorectal cancer risk. Relevant observational studies published up to June 2016 were identified by searching MEDLINE, EMBASE and Cochrane Library databases. Study-specific relative risks (RR) were pooled in both categorical and dose-response meta-analyses...
December 2016: British Journal of Nutrition
https://www.readbyqxmd.com/read/28090705/osteogenic-differentiation-potential-of-adipose-derived-stem-cells-from-ovariectomized-mice
#4
Lei Wang, Chenglong Huang, Qing Li, Xiaomei Xu, Lin Liu, Kui Huang, Xiaoxiao Cai, Jingang Xiao
OBJECTIVES: Osteoporosis (OP) is a systemic disease caused by imbalance between bone resorption and bone formation, commonly resulting from post-menopausal oestrogen deficiency. Although osteogenic differentiation potential of adipose-derived stem cells (ASCs) has been demonstrated, the effect of OP on osteogenic differentiation of ASCs remains unclear. Here, our work has been designed to compare proliferative capacity and osteogenic differentiation ability of ASCs obtained from osteoporotic mice and normal control mice...
January 16, 2017: Cell Proliferation
https://www.readbyqxmd.com/read/28087099/prognostic-and-predictive-indicators-in-early-stage-breast-cancer-and-the-role-of-genomic-profiling-focus-on-the-oncotype-dx-%C3%A2-breast-recurrence-score-assay
#5
E Curtit, L Mansi, Y Maisonnette-Escot, J-L Sautière, X Pivot
Although useful prognostic and predictive insights can be gained from patient and tumour characteristics in early-stage breast cancer, it is not always straightforward to predict the likely risk of recurrence for each individual patient following breast surgery. One of the most difficult challenges faced by clinicians is identifying patients who may benefit most from adjuvant chemotherapy, and distinguishing these cases from those where endocrine therapy may be sufficient for cure. Genomic tests such as the Oncotype DX(®) Breast Recurrence Score(®) Assay have been developed to provide a robust and clinically validated assessment of a patient's individual tumour signature...
December 14, 2016: European Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28081544/nomogram-to-predict-pathologic-complete-response-in-her2-positive-breast-cancer-treated-with-neoadjuvant-systemic-therapy
#6
Takeo Fujii, Takahiro Kogawa, Jimin Wu, Aysegul A Sahin, Dian D Liu, Mariana Chavez-MacGregor, Sharon H Giordano, Akshara Raghavendra, Rushmy K Murthy, Debu Tripathy, Yu Shen, Jose-Miguel Yamal, Naoto T Ueno
BACKGROUND: Pathologic complete response (pCR) is associated with improved survival outcomes in patients with HER2-positive primary breast cancer. We developed a nomogram to predict the probability of pCR rates by using oestrogen receptor (ER) expression, progesterone receptor (PR) expression and HER2/CEP17 ratio as continuous variables. METHODS: We retrospectively reviewed patients with stages I-III HER2-positive invasive breast cancer who had definitive surgery in 1999-2015 and received neoadjuvant systemic therapy (NST)...
January 12, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28081447/hepatic-transcriptional-responses-to-copper-in-the-three-spined-stickleback-are-affected-by-their-pollution-exposure-history
#7
Tamsyn M Uren Webster, Tim D Williams, Ioanna Katsiadaki, Anke Lange, Ceri Lewis, Janice A Shears, Charles R Tyler, Eduarda M Santos
Some fish populations inhabiting contaminated environments show evidence of increased chemical tolerance, however the mechanisms contributing to this tolerance, and whether this is heritable, are poorly understood. We investigated the responses of two populations of wild three-spined stickleback (Gasterosteus aculeatus) with different histories of contaminant exposure to an oestrogen and copper, two widespread aquatic pollutants. Male stickleback originating from two sites, the River Aire, with a history of complex pollution discharges, and Siblyback Lake, with a history of metal contamination, were depurated and then exposed to copper (46μg/L) and the synthetic oestrogen ethinyloestradiol (22ng/L)...
December 31, 2016: Aquatic Toxicology
https://www.readbyqxmd.com/read/28076660/influenza-a-virus-ns1-protein-induced-jnk-activation-and-apoptosis-are-not-functionally-linked
#8
Wolfgang Nacken, Viktor Wixler, Christina Ehrhardt, Stephan Ludwig
Expression of the influenza A virus (IAV) non-structural protein NS1 results in the activation of c-Jun N-terminal kinase (JNK). Both NS1 and JNK are involved in apoptosis induction. To investigate their interrelationship, we stably expressed a tamoxifen inducible NS1 oestrogen receptor fusion-protein (NS1ERT) in mammalian cells. Upon tamoxifen stimulation, NS1ERT expressing cells partially rescued the attenuated replication of NS1-deficient IAVs and also inhibited interferon up-regulation, confirming the functional competence of NS1ERT...
January 11, 2017: Cellular Microbiology
https://www.readbyqxmd.com/read/28072767/cyp3a7-1c-allele-is-associated-with-reduced-levels-of-2-hydroxylation-pathway-oestrogen-metabolites
#9
Deepti Sood, Nichola Johnson, Pooja Jain, Alexandros P Siskos, Mark Bennett, Clare Gilham, Marta Cecilia Busana, Julian Peto, Isabel Dos-Santos-Silva, Hector C Keun, Olivia Fletcher
BACKGROUND: Endogenous sex hormones are well-established risk factors for breast cancer; the contribution of specific oestrogen metabolites (EMs) and/or ratios of specific EMs is less clear. We have previously identified a CYP3A7*1C allele that is associated with lower urinary oestrone (E1) levels in premenopausal women. The purpose of this analysis was to determine whether this allele was associated with specific pathway EMs. METHODS: We measured successfully 12 EMs in mid-follicular phase urine samples from 30 CYP3A7*1C carriers and 30 non-carriers using HPLC-MS/MS...
January 10, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28068668/the-hippo-kinases-lats1-and-2-control-human-breast-cell-fate-via-crosstalk-with-er%C3%AE
#10
Adrian Britschgi, Stephan Duss, Sungeun Kim, Joana Pinto Couto, Heike Brinkhaus, Shany Koren, Duvini De Silva, Kirsten D Mertz, Daniela Kaup, Zsuzsanna Varga, Hans Voshol, Alexandra Vissieres, Cedric Leroy, Tim Roloff, Michael B Stadler, Christina H Scheel, Loren J Miraglia, Anthony P Orth, Ghislain M C Bonamy, Venkateshwar A Reddy, Mohamed Bentires-Alj
Cell fate perturbations underlie many human diseases, including breast cancer. Unfortunately, the mechanisms by which breast cell fate are regulated are largely unknown. The mammary gland epithelium consists of differentiated luminal epithelial and basal myoepithelial cells, as well as undifferentiated stem cells and more restricted progenitors. Breast cancer originates from this epithelium, but the molecular mechanisms that underlie breast epithelial hierarchy remain ill-defined. Here, we use a high-content confocal image-based short hairpin RNA screen to identify tumour suppressors that regulate breast cell fate in primary human breast epithelial cells...
January 9, 2017: Nature
https://www.readbyqxmd.com/read/28067781/gestational-zearalenone-exposure-causes-reproductive-and-developmental-toxicity-in-pregnant-rats-and-female-offspring
#11
Xin Gao, Lvhui Sun, Niya Zhang, Chong Li, Jiacai Zhang, Zhuohui Xiao, Desheng Qi
Zearalenone (ZEN) is an oestrogenic mycotoxin commonly found in food and feed products and can affect reproduction and development in both humans and animals. This study aimed to determine the toxic effects of ZEN on maternal SD rats and the F1 female offspring. Sixty-four pregnant rats were divided into 4 groups and exposed to feed contaminated with ZEN (0, 5, 10, and 20 mg/kg feed) on gestational days (GDs) 0-21. Compared with the controls, the groups exposed to 10 and 20 mg/kg ZEN showed significantly decreased feed intake and body weight of pregnant rats and/or female offspring...
January 5, 2017: Toxins
https://www.readbyqxmd.com/read/28063695/ipsilateral-axillary-recurrence-after-breast-conservative-surgery-the-protective-effect-of-whole-breast-radiotherapy
#12
Oreste Gentilini, Edoardo Botteri, Maria Cristina Leonardi, Nicole Rotmensz, Jose Vila, Nickolas Peradze, Maria Virginia Thomazini, Barbara Alicja Jereczek, Viviana Galimberti, Alberto Luini, Paolo Veronesi, Roberto Orecchia
BACKGROUND AND PURPOSE: Whole breast radiotherapy (WBRT) is one of the possible reasons for the low rate of axillary recurrence after breast-conserving surgery (BCS). PATIENTS AND METHODS: We retrospectively collected data from 4,129 consecutive patients with breast cancer ⩽2cm and negative sentinel lymph node who underwent BCS between 1997 and 2007. We compared the risk of axillary lymph node recurrence between patients treated by WBRT (n=2939) and patients who received partial breast irradiation (PBI; n=1,190) performed by a single dose of electron intraoperative radiotherapy...
January 4, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28054434/in-vitro-phase-i-metabolism-of-selective-estrogen-receptor-modulators-in-horse-using-ultra-high-performance-liquid-chromatography-high-resolution-mass-spectrometry
#13
Karen Y Kwok, George H M Chan, Wai Him Kwok, Jenny K Y Wong, Terence S M Wan
Selective estrogen receptor modulators (SERMs) are chemicals that possess the anti-oestrogenic activities that are banned "in" and "out" of competition by the World Anti-Doping Agency (WADA) in human sports, and by the International Federation of Horseracing Authorities (IFHA) in horseracing. SERMs can be used as performance enhancing drugs to boost the level of androgens or to compensate for the adverse effects as a result of extensive use of androgenic anabolic steroids (AASs). SERMs have indeed been abused in human sports; hence, a similar threat can be envisaged in horseracing...
January 5, 2017: Drug Testing and Analysis
https://www.readbyqxmd.com/read/28053223/oestrogens-and-ageing-from-the-skeletal-prospective
#14
EDITORIAL
Michael Pazianas
No abstract text is available yet for this article.
January 4, 2017: Postgraduate Medical Journal
https://www.readbyqxmd.com/read/28050758/effect-of-the-anti-retroviral-drugs-efavirenz-tenofovir-and-emtricitabine-on-endothelial-cell-function-role-of-parp
#15
Mary Faltz, Hild Bergin, Elly Pilavachi, Guy Grimwade, Jon G Mabley
Highly active anti-retroviral therapy has proved successful in reducing morbidity and mortality associated with HIV infection though it has been linked to increased risk of cardiovascular disease. To date, the direct effects of the anti-retroviral drugs Efavirenz, Tenofovir and Emtricitabine on the vasculature relaxant response have not been elucidated, which impaired may predispose individuals to cardiovascular disease. Increased cellular oxidative stress and overactivation of the DNA repair enzyme poly (ADP-ribose) polymerase (PARP) have been identified as central mediators of vascular dysfunction...
January 3, 2017: Cardiovascular Toxicology
https://www.readbyqxmd.com/read/28043647/the-morphological-spectrum-of-salivary-gland-type-tumours-of-the-breast
#16
REVIEW
Maria P Foschini, Luca Morandi, Sofia Asioli, Gianluca Giove, Angelo G Corradini, Vincenzo Eusebi
Salivary gland like tumours of the breast constitute a wide spectrum of entities each one showing peculiar features and clinical behaviour. They can be subdivided as follows: (1) tumours showing pure myoepithelial cell differentiation, such as pure benign and malignant myoepitheliomas; (2) tumours with mixed epithelial and myoepithelial cell differentiation, such as pleomorphic adenoma, adenomyoepithelioma and adenoid cystic carcinoma; and (3) tumours with pure epithelial cell differentiation, such as acinic cell carcinoma, oncocytic carcinoma, mucoepidermoid carcinoma and polymorphous adenocarcinoma...
December 30, 2016: Pathology
https://www.readbyqxmd.com/read/28043088/fulvestrant-for-hormone-sensitive-metastatic-breast-cancer
#17
REVIEW
Clara I Lee, Annabel Goodwin, Nicholas Wilcken
BACKGROUND: Fulvestrant is a selective oestrogen receptor down-regulator (SERD), which by blocking proliferation of breast cancer cells, is an effective endocrine treatment for women with hormone-sensitive advanced breast cancer. The goal of such systemic therapy in this setting is to reduce symptoms, improve quality of life, and increase survival time. OBJECTIVES: To assess the efficacy and safety of fulvestrant for hormone-sensitive locally advanced or metastatic breast cancer in postmenopausal women, as compared to other standard endocrine agents...
January 3, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28031315/pooled-analysis-of-active-cigarette-smoking-and-invasive-breast-cancer-risk-in-14-cohort-studies
#18
Mia M Gaudet, Brian D Carter, Louise A Brinton, Roni T Falk, Inger T Gram, Juhua Luo, Roger L Milne, Sarah J Nyante, Elisabete Weiderpass, Laura E Beane Freeman, Dale P Sandler, Kim Robien, Kristin E Anderson, Graham G Giles, Wendy Y Chen, Diane Feskanich, Tonje Braaten, Claudine Isaacs, Lesley M Butler, Woon-Puay Koh, Alicja Wolk, Hans-Olov Adami, Emily White, Karen L Margolis, Michael J Thun, Susan M Gapstur
BACKGROUND: The 2014 US Surgeon General's report noted research gaps necessary to determine a causal relationship between active cigarette smoking and invasive breast cancer risk, including the role of alcohol consumption, timing of exposure, modification by menopausal status and heterogeneity by oestrogen receptor (ER) status. METHODS: To address these issues, we pooled data from 14 cohort studies contributing 934 681 participants (36 060 invasive breast cancer cases)...
December 28, 2016: International Journal of Epidemiology
https://www.readbyqxmd.com/read/28029147/snp-variants-at-the-map3k1-setd9-locus-5q11-2-associate-with-somatic-pik3ca-variants-in-breast-cancers
#19
Roberto Puzone, Ulrich Pfeffer
Genome-wide association studies have revealed many breast cancer (BC) risk-associated genetic variants that might functionally interact with other molecular determinants of BC. We analysed the association of 21 known risk-associated single-nucleotide variants (SNVs) with recurrent somatic variants in two cohorts of 77 and 754 oestrogen receptor α-positive BCs. Four SNVs located at 5q11.2 were found to be associated with the somatic PIK3CA variant status in the pilot cohort of 77 cases with odds ratio (OR) up to 6...
December 28, 2016: European Journal of Human Genetics: EJHG
https://www.readbyqxmd.com/read/28029083/psychopathological-behaviour-and-cognition-in-morbid-obesity
#20
Alba Calderone, Pasquale Fabio Calabrò, Chita Lippi, Roberta Jaccheri, Jacopo Vitti, Ferruccio Santini
BACKGROUND: Obesity is a chronic condition with high prevalence and multifaceted aetiology, accompanied by an increased risk of morbidity and mortality. Obesity has several negative effects on the psychological status, and the severity of psychological disorders correlates with the degree of obesity. OBJECTIVE: Aim of this review is to provide an overview of the literature concerning the psychological distress associated with severe obesity, which contributes to deterioration of the quality of life of affected patients...
December 26, 2016: Recent Patents on Endocrine, Metabolic & Immune Drug Discovery
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