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https://www.readbyqxmd.com/read/28728571/the-prevalence-and-risk-factors-of-preterm-small-for-gestational-age-infants-a-population-based-retrospective-cohort-study-in-rural-chinese-population
#1
Shi Chen, Rong Zhu, Huijuan Zhu, Hongbo Yang, Fengying Gong, Linjie Wang, Yu Jiang, Bill Q Lian, Chengsheng Yan, Jianqiang Li, Qing Wang, Shi-Kun Zhang, Hui Pan
BACKGROUND: Preterm birth and small for gestational age (SGA) are strong indicators of neonatal adverse outcomes. With the growing importance of preterm SGA infants, we aim to evaluate the prevalence and risk factors for preterm SGA in China. METHOD: We analyzed the data of parents and infants from a population-based cohort research of the free National Pre-pregnancy Checkups Project (NPCP) in rural China. Only singleton live births that occurred between 24 weeks +0 days and 36 weeks +6 days of pregnancy were included in this study...
July 20, 2017: BMC Pregnancy and Childbirth
https://www.readbyqxmd.com/read/28715852/treatment-of-premenstrual-dysphoria-with-continuous-versus-intermittent-dosing-of-oral-contraceptives-results-of-a-three-arm-randomized-controlled-trial
#2
Tory A Eisenlohr-Moul, Susan S Girdler, Jacqueline L Johnson, Peter J Schmidt, David R Rubinow
BACKGROUND: Although traditionally dosed combined oral contraceptives (COCs) (21 days of active pills, 7 days of inactive pills) have not been demonstrated as superior to placebo for the treatment of premenstrual dysphoria (PMD), some randomized controlled trials (RCTs) indicate that oral contraceptives administered with a shortened or eliminated hormone-free interval are superior to placebo. However, results of such trials are mixed, and no existing studies have directly compared continuous and intermittent dosing schedules of the same oral contraceptive...
July 17, 2017: Depression and Anxiety
https://www.readbyqxmd.com/read/28715060/the-complex-interaction-between-polycystic-ovary-syndrome-and-hereditary-angioedema-case-reports-and-review-of-the-literature
#3
Marina Iahn-Aun, Marcelo Vivolo Aun, Antonio Abílio Motta, Jorge Kalil, Pedro Giavina-Bianchi, Sylvia Asaka Hayashida, Edmund Chada Baracat, Gustavo Arantes Maciel
Importance: Hereditary angioedema (HAE) is a rare but severe disease, with high risk of death, and attacks have been associated to high estrogen levels. Polycystic ovary syndrome (PCOS) is a common hyperandrogenic condition, which is frequently treated with combined oral contraceptives. Objective: The aim of this study was to describe 2 clinical cases of young women diagnosed as having PCOS who developed HAE attacks after the introduction of combined estrogen-progestin pills to treat PCOS symptoms...
July 2017: Obstetrical & Gynecological Survey
https://www.readbyqxmd.com/read/28712591/normalizing-ovulation-rate-by-preferential-reduction-of-hepato-visceral-fat-in-adolescent-girls-with-polycystic-ovary-syndrome
#4
Lourdes Ibáñez, Luis Del Río, Marta Díaz, Giorgia Sebastiani, Óscar J Pozo, Abel López-Bermejo, Francis de Zegher
PURPOSE: Polycystic ovary syndrome (PCOS) is an increasingly prevalent disorder in adolescent girls, commonly presenting with hirsutism/oligomenorrhea, commonly treated with an oral contraceptive (OC), and commonly followed by oligoanovulatory subfertility. We tested whether an intervention targeting the reduction of hepato-visceral adiposity is followed by a higher ovulation rate than OC treatment. METHODS: This randomized, open-label, single-center, pilot proof-of-concept study (12 months on treatment, then 12 months off) was performed in adolescent girls with hirsutism and oligomenorrhea (PCOS by National Institutes of Health; no sexual activity; N = 36; mean age 16 years, body mass index 23...
July 13, 2017: Journal of Adolescent Health: Official Publication of the Society for Adolescent Medicine
https://www.readbyqxmd.com/read/28712325/pharmacodynamics-of-combined-estrogen-progestin-oral-contraceptives-2-effects-on-hemostasis
#5
Manuela Farris, Carlo Bastianelli, Elena Rosato, Ivo Brosens, Giuseppe Benagiano
The pharmacodynamic effects of various combined oral estrogen-progestin combinations (COC) are examined for their components alone or in the various combined formulations. Special emphasis is given to products containing natural estrogens. Areas covered: Recent information on the effect of androgens, estrogens, progestins, as well as various COC combinations on the coagulation cascade will be reviewed aiming at providing an updated picture. The present article reviews hemostatic changes occurring during use of classic and modern combinations of estrogens (ethinyl estradiol, estradiol, estradiol valerate and estetrol) and new progestins (desogestrel, gestodene, dienogest, drospirenone, nomegestrol acetate), compared to classic compounds, such as levonorgestrel...
July 17, 2017: Expert Review of Clinical Pharmacology
https://www.readbyqxmd.com/read/28712125/oral-contraceptive-pill-alters-acute-dietary-protein-induced-thermogenesis-in-young-women
#6
Maharani Retna Duhita, Yves Schutz, Jean-Pierre Montani, Abdul G Dulloo, Jennifer L Miles-Chan
OBJECTIVE: There is much interest in the role of dietary protein for weight control. However, there remains a need to characterize individual determinants of the thermogenic effects of protein. This study aimed to investigate the influence of menstrual cycle phase and the combined, monophasic oral contraceptive pill on the thermogenic response to a standardized high-protein (HP) versus normal-protein (NP) meal. METHODS: Following an overnight fast, resting energy expenditure (EE) was measured in 16 healthy young women (8 taking and 8 not taking the pill) and 8 men for 30 minutes pre ingestion and 3 hours post ingestion of a NP (11%) or HP (24%) meal...
July 16, 2017: Obesity
https://www.readbyqxmd.com/read/28710636/biotransformation-of-dhea-into-7%C3%AE-15%C3%AE-dioh-dhea
#7
Hui Li, Jin Sun, Zhenghong Xu
3β,7α,15α-Trihydroxy-5-androsten-17-one (7α,15α-diOH-DHEA) is a key intermediate of the novel oral contraceptive "Yasmin" (widely used in birth control pills and postmenopausal hormone replacement therapy pills; the active ingredient is drospirenone). It can be synthesized from dehydroepiandrosterone (DHEA) by microbial dihydroxylation at the C7 and C15 positions. Here we describe the method of bioconversion from DHEA into 7α,15α-diOH-DHEA by Colletotrichum lini. Using 6 g/L DHEA as a substrate, the DHEA conversion and the 7α,15α-diOH-DHEA molar yield were 72...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28710631/bioconversion-of-phytosterols-into-androstadienedione-by-mycobacterium-smegmatis-cect-8331
#8
Julia García-Fernández, Igor Martínez, Lorena Fernández-Cabezón, Carmen Felpeto-Santero, José-Luis García, Beatriz Galán
The C19 steroid 1,4-androstadiene-3,17-dione (androstadienedione, ADD) is an added value product used as a synthon in the pharmaceutical industry for the commercial production of corticosteroids, mineralocorticoids, oral contraceptives, and other pharmaceutical steroids. Phytosterol biotransformation catalyzed by microbial whole cells is actually a very well-established research area in white biotechnology. The protocol below provides detailed information on ADD production by the mutant CECT 8331 of Mycobacterium smegmatis mc(2)155 using phytosterols as raw material in a lab scale...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28710506/obese-versus-normal-weight-late-adolescent-females-have-inferior-trabecular-bone-microarchitecture-a-pilot-case-control-study
#9
Joseph M Kindler, Norman K Pollock, Hannah L Ross, Christopher M Modlesky, Harshvardhan Singh, Emma M Laing, Richard D Lewis
Though still a topic of debate, the position that skeletal health is compromised with obesity has received support in the pediatric and adult literature. The limited data relating specifically to trabecular bone microarchitecture, however, have been relatively inconsistent. The aim of this pilot cross-sectional case-control study was to compare trabecular bone microarchitecture between obese (OB) and normal-weight (NW) late-adolescent females. A secondary aim was to compare diaphyseal cortical bone outcomes between these two groups...
July 14, 2017: Calcified Tissue International
https://www.readbyqxmd.com/read/28709512/correlates-of-sleep-quality-and-sleep-duration-in-a-sample-of-urban-dwelling-elderly-nigerian-women
#10
Michael B Fawale, Isiaka Alani Ismaila, Adekunle F Mustapha, Morenikeji A Komolafe, Olanrewaju Ibigbami
OBJECTIVES: Aging, female sex, and urbanization increase the risk of sleep impairment. Sleep in urban-dwelling elderly African women has been sparsely studied. We studied the characteristics and correlates of sleep quality and habitual sleep duration in a primary care population of urban-living Nigerian women. METHODS: Sleep quality and sleep duration over the previous 1 month were estimated using the Pittsburgh Sleep Quality Index (PSQI). Excessive daytime sleepiness, risk of obstructive sleep apnea (OSA), and depressive symptoms were also assessed...
August 2017: Sleep Health
https://www.readbyqxmd.com/read/28706519/estrogens-promote-the-production-of-natural-neutralizing-antibodies-in-fish-through-g-protein-coupled-estrogen-receptor-1
#11
María C Rodenas, Isabel Cabas, Nuria E Gómez-González, Marta Arizcun, José Meseguer, Victoriano Mulero, Alfonsa García-Ayala
Natural antibodies play crucial roles in pathogen elimination, B-cell survival and homeostasis, and inflammatory and autoimmune diseases. Although estrogens are able to regulate both innate and adaptive immune responses, their role in the production of natural antibodies is unknown. Here, we show that the dietary intake of the synthetic estradiol analog, 17α-ethinylestradiol (EE2), one of the most potent pharmaceutical estrogens and intensively used in human therapeutics as a component of most oral contraceptives, regulates the abundance and proliferation of T and IgM(+) B lymphocytes in the teleost fish gilthead seabream (Sparus aurata L...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28706369/improving-the-knowledge-and-attitude-on-standard-days-method-of-family-planning-through-a-promotional-program-among-indian-postgraduate-students
#12
Philby Babu Menachery, Judith Angelitta Noronha, Sweety Fernanades
INTRODUCTION: The 'Standard Days Method' is a fertility awareness-based method of family planning that identifies day 8 through day 19 of the menstrual cycle as fertile days during which a woman is likely to conceive with unprotected intercourse. OBJECTIVE: The study was aimed to determine the effectiveness of a promotional program on the 'Standard Days Method' in terms of improving the knowledge scores and attitude scores. DESIGN: A pre-experimental one-group pretest-posttest research design was adopted...
August 2017: Journal of Obstetrics and Gynaecology of India
https://www.readbyqxmd.com/read/28705605/age-of-menarche-is-associated-with-knee-joint-replacement-due-to-primary-osteoarthritis-the-hunt-study-and-the-norwegian-arthroplasty-register
#13
A I Hellevik, L Nordsletten, M B Johnsen, A M Fenstad, O Furnes, K Storheim, J A Zwart, G Flugsrud, A Langhammer
OBJECTIVE: To investigate whether parity, age at menarche, menopausal status, age at menopause, use of oral contraceptives (OC) or use of hormone replacement therapy (HRT) were associated with total knee replacement (TKR) or total hip replacement (THR) due to primary osteoarthritis. METHOD: In a prospective cohort study of 30,289 women from the second and third surveys of the Nord-Trøndelag Health Study, data were linked to the Norwegian Arthroplasty Register (NAR) in order to identify TKR or THR due to primary osteoarthritis...
July 10, 2017: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/28704597/are-incident-gallstones-associated-to-sex-dependent-changes-with-age-a-cohort-study
#14
D M Shabanzadeh, S A Holmboe, L T Sørensen, A Linneberg, A-M Andersson, T Jørgensen
Age and female sex have repeatedly been identified as gallstone determinants but the underlying mechanisms are not clarified. The objectives of this study were to determine if changes with age in physiology, lifestyle, or reproductive hormones were associated with incident gallstones. A cohort study of a general population random sample (N = 2366) aged 30-60 years was performed. Participants were ultrasound screened for gallstones in 1982-84 and again in 1993-94. Lifestyle data and blood samples were obtained and re-analyzed in 2004...
July 13, 2017: Andrology
https://www.readbyqxmd.com/read/28704413/association-of-insulin-resistance-with-near-peak-bone-mass-in-the-femur-and-lumbar-spine-of-korean-adults-aged-25-35-the-korean-national-health-and-nutrition-examination-survey-2008-2010
#15
Min Soo Choo, Se Rin Choi, Jun Hyun Han, Seong Ho Lee, Young Suk Shim
OBJECTIVE: This study aimed to evaluate the relationship between insulin resistance and the bone mineral density (BMD) of femur and lumbar spine in Korean adults who are expected to exhibit near peak bone mass. METHODS: Data from the Korean National Health and Nutrition Examination Survey 2008-2010 were analyzed. A total of 2,750 participants aged 25-35 years were included. Insulin resistance was assessed using a homeostatic model assessment of insulin resistance (HOMA-IR) and serum fasting insulin...
2017: PloS One
https://www.readbyqxmd.com/read/28694212/role-of-rs13117307-single-nuclear-polymorphism-in-the-risk-of-uterine-cervical-cancer-from-polish-population-and-its-impact-on-exocyst-complex-component-1-expression
#16
Sebastian Łaźniak, Andrzej Roszak, Adam Balcerek, Żaneta Wareńczak-Florczk, Edyta Prokop, Anna Sowińska, Emianka Sotiri, Alexander Tsibulski, Stefan Sajdak, Pawel P Jagodziński
We evaluated the role of NM_001024924.1:c.1330+1646C>T (rs13117307) single nucleotide polymorphism (SNP), situated in the intronic region of exocyst complex component 1 (EXCO1), in the development and spreading of cervical squamous cell carcinoma (SCC). Utilizing high resolution melting curve analysis, we analyzed this polymorphism in patients with cervical SCC (n=485) and controls (n=509) in the Polish Caucasian population. Logistic regression analysis was used to adjust for age, parity, oral contraceptive use, tobacco smoking, and menopausal status...
July 7, 2017: Gene
https://www.readbyqxmd.com/read/28694152/drug-interactions-between-non-rifamycin-antibiotics-and-hormonal-contraception-a-systematic-review
#17
REVIEW
Katharine B Simmons, Lisa B Haddad, Kavita Nanda, Kathryn M Curtis
OBJECTIVE: To determine whether interactions between non-rifamycin antibiotics and hormonal contraceptives result in decreased effectiveness or increased toxicity of either therapy. DATA SOURCES: We searched MEDLINE, Embase, clinicaltrials.gov and Cochrane libraries from database inception through June, 2016. STUDY ELIGIBILITY CRITERIA: We included trials, cohort, case-control, and pharmacokinetic (PK) studies in any language addressing pregnancy rates, pharmacodynamics or PK outcomes when any hormonal contraceptive and non-rifamycin antibiotic were administered together versus apart...
July 7, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28687643/cancer-incidence-attributable-to-lifestyle-and-environmental-factors-in-alberta-in-2012-summary-of-results
#18
Anne Grundy, Abbey E Poirier, Farah Khandwala, Xin Grevers, Christine M Friedenreich, Darren R Brenner
BACKGROUND: Estimates of the proportion of cancer cases that can be attributed to modifiable risk factors are not available for Canada and, more specifically, Alberta. The purpose of this study was to estimate the total proportion of cancer cases in Alberta in 2012 that could be attributed to a set of 24 modifiable lifestyle and environmental risk factors. METHODS: We estimated summary population attributable risk estimates for 24 risk factors (smoking [both passive and active], overweight and obesity, inadequate physical activity, diet [inadequate fruit and vegetable consumption, inadequate fibre intake, excess red and processed meat consumption, salt consumption, inadequate calcium and vitamin D intake], alcohol, hormones [oral contraceptives and hormone therapy], infections [Epstein-Barr virus, hepatitis B and C viruses, human papillomavirus, Helicobacter pylori], air pollution, natural and artificial ultraviolet radiation, radon and water disinfection by-products) by combining population attributable risk estimates for each of the 24 factors that had been previously estimated...
July 7, 2017: CMAJ Open
https://www.readbyqxmd.com/read/28685096/oral-contraceptives-cause-evolutionarily-novel-increases-in-hormone-exposure-a-risk-factor-for-breast-cancer
#19
Jennie L Lovett, Margo A Chima, Juliana K Wexler, Kendall J Arslanian, Andrea B Friedman, Chantal B Yousif, Beverly I Strassmann
Background and objectives: In the evolutionary past, women spent most of their reproductive lives either pregnant or in lactational amenorrhea, and rarely menstruated. The current pattern of frequent menses, and the associated increase in endogenous hormonal exposure, has been implicated in the current breast cancer epidemic. It is not known, however, whether oral contraceptives further increase, or actually decrease, hormonal exposure over one menstrual cycle. Here, we examined variation in hormonal exposure across seven oral contraceptive (OC) formulations, and produced the first quantitative comparison of exogenous versus endogenous hormone exposure...
2017: Evolution, Medicine, and Public Health
https://www.readbyqxmd.com/read/28685080/association-between-oral-contraceptive-use-as-a-risk-factor-and-triple-negative-breast-cancer-a-systematic-review-and-meta-analysis
#20
Li Li, Yahua Zhong, Hongyan Zhang, Haijun Yu, Yong Huang, Zheng Li, Gaili Chen, Xinying Hua
Triple-negative breast cancer (TNBC), a unique subtype of breast cancer, which is resistant to endocrine and targeted therapy, usually relapses early, progresses rapidly and is associated with a poor prognosis. Epidemiological investigations focusing on the association between risk factors and the onset of TNBC demonstrated that the incidence of TNBC exhibits a significant correlation with anthropometric, geographical and demographic parameters. The aim of the present systematic review and meta-analysis was to evaluate the strength of the association between the use of oral contraceptives (OCs) and TNBC...
July 2017: Molecular and Clinical Oncology
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