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https://www.readbyqxmd.com/read/28345661/stepwise-analysis-of-mir9-loci-identifies-mir-9-5p-to-be-involved-in-oestrogen-regulated-pathways-in-breast-cancer-patients
#1
Raffaela Barbano, Barbara Pasculli, Michelina Rendina, Andrea Fontana, Caterina Fusilli, Massimiliano Copetti, Stefano Castellana, Vanna Maria Valori, Maria Morritti, Paolo Graziano, Ciuffreda Luigi, Michelina Coco, Francesco Picardo, Tommaso Mazza, Ella Evron, Roberto Murgo, Evaristo Maiello, Manel Esteller, Vito Michele Fazio, Paola Parrella
miR-9 was initially identified as an epigenetically regulated miRNA in tumours, but inconsistent findings have been reported so far. We analysed the expression of miR-9-5p, miR-9-3p, pri-miRs and MIR9 promoters methylation status in 131 breast cancer cases and 12 normal breast tissues (NBTs). The expression of both mature miRs was increased in tumours as compared to NBTs (P < 0.001) and negatively correlated with ER protein expression (P = 0.005 and P = 0.003, for miR-9-3p and miR-9-5p respectively)...
March 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28341657/effect-of-fixation-time-on-breast-biomarker-expression-a-controlled-study-using-cell-line-derived-xenografted-cdx-tumours
#2
K R Kao, T Hasan, A Baptista, T Truong, L Gai, A C Smith, S Li, P Gonzales, K Voisey, P Eriwvo, J Power, N Denic
AIMS: Altering the length of time specimens are placed in fixative without compromising analytical testing accuracy is a continuous challenge in the anatomical pathology lab. The aim of this study was to determine under controlled conditions the effects of variable fixation time on breast biomarker expression in human breast cancer cell line-derived xenografted (CDX) tumours. METHODS: CDX tumours using strong oestrogen receptor (ER)-positive, Her2-negative (MCF7) and weak ER-positive, Her2 equivocal (T47D) breast cancer cell lines were fixed for various times ranging from 1 to 336 hours in 10% neutral buffered formalin...
March 23, 2017: Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28341464/reproductive-effects-of-oestrogenic-endocrine-disrupting-chemicals-in-astyanax-rivularis-inhabiting-headwaters-of-the-velhas-river-brazil
#3
André Alberto Weber, Davidson Peruci Moreira, Rafael Magno Costa Melo, Augusto Bicalho Cruz Vieira, Paula Suzanna Prado, Mirra Angelina Neres da Silva, Nilo Bazzoli, Elizete Rizzo
The Velhas River is the most polluted river in the state of Minas Gerais, south-eastern Brazil. Due to its historical and environmental relevance, the aim of this study was to evaluate the effects of oestrogenic endocrine disruptors on the reproduction of the lambari Astyanax rivularis, a small-sized species found in headwaters of the São Francisco River basin. Quarterly field samplings were carried out during a reproductive cycle in three streams of the upper Velhas River: S1 (reference site) and S2 and S3 (sites contaminated by untreated sewage)...
March 21, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28341031/surveillance-of-women-with-a-personal-history-of-breast-cancer-by-tumour-subtype
#4
A P Benveniste, M J Dryden, I Bedrosian, P K Morrow, R L Bassett, W Yang
AIM: To determine if the rate and timing of a second breast cancer event (SBCE) in women with a personal history of breast cancer varies by disease subtype or breast imaging method. MATERIALS AND METHODS: A retrospective review was performed of women with a SBCE from January 2006 to December 2010 at a single institution. Data analysed included oestrogen receptor (ER), progesterone receptor (PR), human epidermal growth factor receptor 2 (HER2) status of the primary and second breast cancers; mammographic and ultrasound (US) features from SBCE; and the time interval between both events...
March 2017: Clinical Radiology
https://www.readbyqxmd.com/read/28333356/the-safety-and-efficacy-of-controlled-ovarian-hyperstimulation-for-fertility-preservation-in-women-with-early-breast-cancer-a-systematic-review
#5
Rachael J Rodgers, Geoffrey D Reid, Juliette Koch, Rebecca Deans, William L Ledger, Michael Friedlander, Robert B Gilchrist, Kirsty A Walters, Jason A Abbott
STUDY QUESTION: Can controlled ovarian hyperstimulation (COH) for fertility preservation be effectively conducted in women with breast cancer without worsening their prognosis? SUMMARY ANSWER: COH with co-administration of letrozole suppresses oestradiol levels without significantly impacting oocyte yield or decreasing disease-free survival rates. WHAT IS KNOWN ALREADY: Oestradiol has the capacity to stimulate the proliferation of breast cancer cells...
February 27, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28328155/does-dynorphin-play-a-role-in-the-onset-of-puberty-in-female-sheep
#6
J A Lopez, M N Bedenbaugh, R B McCosh, P W Weems, L J Meadows, B Wisman, L M Coolen, R L Goodman, S M Hileman
Puberty onset involves increased gonadotrophin-release (GnRH) release as a result of decreased sensitivity to oestrogen (E2 )-negative feedback. Because GnRH neurones lack E2 receptor α, this pathway must contain interneurones. One likely candidate is KNDy neurones (kisspeptin, neurokinin B, dynorphin). The overarching hypothesis of the present study was that the prepubertal hiatus in luteinising hormone (LH) release involves reduced kisspeptin and/or heightened dynorphin input. We first tested the specific hypothesis that E2 would reduce kisspeptin-immunopositive cell numbers and increase dynorphin-immunopositive cell numbers...
December 2016: Journal of Neuroendocrinology
https://www.readbyqxmd.com/read/28325747/brief-fixation-enables-same-day-breast-cancer-diagnosis-with-reliable-assessment-of-hormone-receptors-e-cadherin-and-her2-neu
#7
Altuna Halilovic, Joris Bulte, Yvonne Jacobs, Hanneke Braam, Patricia van Cleef, Margrethe Schlooz-Vries, Annelies Werner, Oliver Boelens, Iris Nagtegaal, Hans de Wilt, Peter Bult
AIMS: Preoperative core needle biopsy (CNB) is commonly used to confirm the diagnosis of breast cancer. For treatment purposes and for determining histological type, especially in case of neoadjuvant therapy, oestrogen receptor (ER), progesterone receptor (PR), human epidermal growth factor receptor 2 (HER2) status and E-cadherin assessments are crucial. Considering the increasing demand for same-day diagnosis of breast lesions, an accelerated method of CNB processing was developed, in which the tissue fixation time is radically reduced...
March 21, 2017: Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28321922/retrospective-evaluation-of-venous-thromboembolism-vte-are-all-transient-provoking-events-the-same
#8
Chong Chyn Chua, Hui Yin Lim, Mark Tacey, Harshal Nandurkar, Prahlad Ho
OBJECTIVES: Venous thromboembolism (VTE) provoked by transient risk factors has traditionally been classified as a single entity with lower risk of recurrence. We evaluated the association between different categories of transient provoking factors and the relative risk of recurrence. METHODS: Retrospective evaluation of VTE events in non-cancer patients from July 2011 to December 2012 at two tertiary institutions in Australia with a minimum follow up of 24 months...
March 21, 2017: European Journal of Haematology
https://www.readbyqxmd.com/read/28321284/gynaecomastia-in-two-men-on-stable-antiretroviral-therapy-who-commenced-treatment-for-tuberculosis
#9
Jeremy D Kratz, Ahmad Y El-Shazly, Santos G Mambuque, Elpidio Demetria, Peter Veldkamp, Timothy S Anderson
Gynaecomastia is a common clinical presentation that varies from benign presentations in stages of human development to hormonal pathology, mainly due to hepatic dysfunction, malignancy, and adverse pharmacologic effects. We describe the development of significant bilateral gynaecomastia after starting treatment for pulmonary tuberculosis (TB) in two males with WHO stage III Human Immunodeficiency Virus (HIV) infection on stable antiretroviral regimens. Emerging reports suggest that distinct hepatic impairment in efavirenz metabolism modulates oestrogenic activity, which may be potentiated by anti-tuberculosis therapy...
December 2016: Malawi Medical Journal: the Journal of Medical Association of Malawi
https://www.readbyqxmd.com/read/28319428/two-cases-of-first-onset-intrahepatic-cholestasis-of-pregnancy-associated-with-moderate-ovarian-hyperstimulation-syndrome-after-ivf-treatment-and-review-of-the-literature
#10
Mehmet Firat Mutlu, Koray Aslan, Ismail Guler, Ilknur Mutlu, Mehmet Erdem, Nuray Bozkurt, Ahmet Erdem
Intrahepatic cholestasis of pregnancy (ICP) is an uncommon disorder, which generally occurs in the second and third trimester of pregnancy with symptoms of pruritus. The cause of ICP is unknown but genetic, hormonal and environmental factors contribute to its pathogenesis. The aetiology of ICP is unclear but elevation in oestrogen levels thought to cause ICP is typically seen in the third trimester of pregnancy, and for this reason it is not usually considered in the differential diagnosis of pruritus and liver function disorders in the first trimester of the pregnancy...
March 20, 2017: Journal of Obstetrics and Gynaecology: the Journal of the Institute of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/28317410/sex-hormone-binding-globulin-and-antithrombin-iii-activity-in-women-with-oral-ultra-low-dose-estradiol
#11
Sumika Matsui, Toshiyuki Yasui, Kana Kasai, Kaoru Keyama, Kanako Yoshida, Takeshi Kato, Hirokazu Uemura, Akira Kuwahara, Toshiya Matsuzaki, Minoru Irahara
Oral oestrogen increases the risk of venous thromboembolism (VTE) and increases production of sex hormone-binding globulin (SHBG) in a dose-dependent manner. SHBG has been suggested to be involved in venous thromboembolism. We examined the effects of oral ultra-low-dose oestradiol on circulating levels of SHBG and coagulation parameters, and we compared the effects to those of transdermal oestradiol. Twenty women received oral oestradiol (500 μg) every day (oral ultra-low-dose group) and 20 women received a transdermal patch (50 μg) as a transdermal group...
March 20, 2017: Journal of Obstetrics and Gynaecology: the Journal of the Institute of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/28315349/diethylstilbestrol-induces-oxidative-dna-damage-resulting-in-apoptosis-of-spermatogonial-stem-cells-in-vitro
#12
Khaled Habas, Martin H Brinkworth, Diana Anderson
The spermatogonial stem cells (SSCs) are the only germline stem cells in adults that are responsible for the transmission of genetic information from mammals to the next generation. SSCs play a very important role in the maintenance of progression of spermatogenesis and help provide an understanding of the reproductive biology of future gametes and a strategy for diagnosis and treatment of infertility and male reproductive toxicity. Androgens/oestrogens are very important for the suitable maintenance of male germ cells...
March 14, 2017: Toxicology
https://www.readbyqxmd.com/read/28304393/the-effects-of-oestrogens-and-their-receptors-on-cardiometabolic-health
#13
REVIEW
Eugenia Morselli, Roberta S Santos, Alfredo Criollo, Michael D Nelson, Biff F Palmer, Deborah J Clegg
Cardiovascular disease (CVD) is one of the leading causes of mortality in developed countries. The incidence of CVD is sexually dimorphic, and research has focused on the contribution of sex steroids to the development and progression of the cardiometabolic syndrome, which is defined as a clustering of interrelated risk factors that promote the development of atherosclerosis (which can lead to CVD) and type 2 diabetes mellitus. Data are inconclusive as to how sex steroids and their respective receptors increase or suppress the risk of developing the cardiometabolic syndrome and thus CVD...
March 17, 2017: Nature Reviews. Endocrinology
https://www.readbyqxmd.com/read/28302915/sex-differences-in-ischaemic-stroke-potential-cellular-mechanisms
#14
REVIEW
Anjali Chauhan, Hope Moser, Louise D McCullough
Stroke remains a leading cause of mortality and disability worldwide. More women than men have strokes each year, in part because women live longer. Women have poorer functional outcomes, are more likely to need nursing home care and have higher rates of recurrent stroke compared with men. Despite continued advancements in primary prevention, innovative acute therapies and ongoing developments in neurorehabilitation, stroke incidence and mortality continue to increase due to the aging of the U.S. POPULATION: Sex chromosomes (XX compared with XY), sex hormones (oestrogen and androgen), epigenetic regulation and environmental factors all contribute to sex differences...
April 1, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28300438/a-rare-case-of-oestrogen-dermatitis
#15
Emilie Bourgeault, Janie Bujold, Marie-Eve Doucet
BACKGROUND: Oestrogen dermatitis is a rare disorder characterised by cyclical eruptions in association with a woman's menstrual cycle. METHODS: A 43-year-old woman with an 8-year history of cyclical inguinal dermatitis, with a negative patch test, was tested with intradermal progesterone and oestrogen. RESULTS: Intradermal testing was positive for oestrogen only. CONCLUSION: In a female patient with cyclical dermatitis, it is important to consider oestrogen or progesterone dermatitis in the differential diagnosis...
December 1, 2016: Journal of Cutaneous Medicine and Surgery
https://www.readbyqxmd.com/read/28296530/early-post-haemorrhagic-stroke-testosterone-and-oestradiol-levels-and-long-term-risk-of-death
#16
Jing Cai, Jingbo Li, Shuda Chen, Jing Meng, Reng Ren, Min Li
OBJECTIVE: The influence of oestrogen and testosterone replacement on stroke risk has been examined, as well as mechanisms by which oestrogen may protect from post-stroke damage. However, whether testosterone levels in the early time period after haemorrhagic stroke influence long-term mortality has not previously been investigated. We examined whether these concentrations were predictive of risk of death. SETTING: University hospital. DESIGN: Prospective study...
2017: Brain Injury: [BI]
https://www.readbyqxmd.com/read/28295702/effect-of-steroid-hormones-on-the-innate-immune-response-induced-by-staphylococcus-aureus-in-the-goat-mammary-gland
#17
K Kuwahara, Y Yoshimura, N Isobe
The objective of this study was to compare the dynamics of innate immune components after intramammary infusion of Staphylococcus aureus (SA) under conditions of high oestrogen and high progesterone in goats. In one group ("E-group"), controlled internal drug release (CIDR) devices were inserted intravaginally from days -11 to -4. Prostaglandin F2α was administered immediately after removal of the CIDR device at day -3, and then oestradiol benzoate (E) was injected intramuscularly once a day from days -2 to 3...
March 12, 2017: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/28293781/greb1-genetic-variants-are-associated-with-bone-mineral-density-in-caucasians
#18
Kevin G Hegarty, Frances J Drummond, Mary Daly, Fergus Shanahan, Michael G Molloy
Gaining an understanding of factors contributing to bone quality is key to the development of effective preventative treatments for osteoporosis and reduction in osteoporotic fractures. Oestrogen is a strong regulator of bone remodelling which maintains skeletal structural integrity. The growth regulation by oestrogen in breast cancer 1 (GREB1) gene, with an as yet undefined function, is an early response gene in the oestrogen-regulated pathway. Suggestive evidence of linkage with bone mineral density (BMD) variation has been reported with D2S168, located telomeric of GREB1...
March 14, 2017: Journal of Bone and Mineral Metabolism
https://www.readbyqxmd.com/read/28290259/synergistic-attenuation-of-ovariectomy-induced-bone-loss-by-combined-use-of-fish-oil-and-17%C3%AE-oestradiol
#19
Youri Jin, Myoungsook Lee, Yongsoon Park
Oestrogen and n-3 PUFA, especially EPA and DHA, have been reported to have beneficial effects on bone loss. Thus, the purpose of the present study was to investigate the synergistic bone-protective mechanism of combined treatments of EPA+DHA supplementation and oestrogen injection in ovariectomised rats. Rats were fed a modified American Institute of Nutrition-93G diet with 0 %, 1 % or 2 % n-3 PUFA (EPA+DHA) relative to the total energy intake for 12 weeks. Rats were surgically ovariectomised at week 8, and after a 1-week recovery period rats were injected with either 17β-oestradiol-3-benzoate (E2) or maize oil for the last 3 weeks...
March 14, 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/28289899/role-of-bmi-and-hormone-therapy-in-melanoma-risk-a-case-control-study
#20
Vincenzo De Giorgi, Alessia Gori, Imma Savarese, Antonietta D'Errico, Federica Scarfì, Federica Papi, Vincenza Maio, Piero Covarelli, Daniela Massi, Sara Gandini
BACKGROUND: Currently, the association between body mass index (BMI) and hormone therapies and Cutaneous Melanoma (CM) development is strongly debated. This study was carried out to assess the association between BMI, hormone therapies, and CM risk. METHODS: The present study is a hospital-based case-control study with 605 consecutive CM patients and 592 controls treated for non-neoplastic conditions at the Department of Dermatology in Florence. The associations of melanoma risk with BMI and hormone therapies were assessed performing unconditional logistic regression to estimate odds ratios (OR) and their 95% confidence intervals, adjusting for potential confounders...
March 13, 2017: Journal of Cancer Research and Clinical Oncology
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