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Age at menarche

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https://www.readbyqxmd.com/read/28930233/dietary-isoflavones-and-breast-cancer-risk
#1
REVIEW
Samira Ziaei, Reginald Halaby
Breast cancer is the deadliest neoplasm in women globally, resulting in a significant health burden. In many cases, breast cancer becomes resistant to chemotherapy, radiation, and hormonal therapies. It is believed that genetics is not the major cause of breast cancer. Other contributing risk factors include age at first childbirth, age at menarche, age at menopause, use of oral contraceptives, race and ethnicity, and diet. Diet has been shown to influence breast cancer incidence, recurrence, and prognosis...
April 7, 2017: Medicines (Basel, Switzerland)
https://www.readbyqxmd.com/read/28928717/egg-quality-during-the-pubertal-transition-is-youth-all-it-s-cracked-up-to-be
#2
Francesca E Duncan
Although it is well accepted that egg quality decreases with advanced maternal age, we do not know how it is affected at the earliest ages during the pubertal transition-likely because this young population is not typically reproducing. However, in the setting of fertility preservation, more childhood cancer patients are surviving their diagnosis due to medical advances, forcing patients and their families to consider their future fertility at a very young age. Ex vivo in vitro maturation, in which cumulus oocyte complexes harvested from ovarian tissue are cultured to obtain mature gametes, is gaining traction as a fertility preservation method that is coupled to ovarian tissue cryopreservation...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28923182/association-between-age-at-menarche-and-cardiovascular-disease-a-systematic-review-on-risk-and-potential-mechanisms
#3
REVIEW
Janneke Luijken, Yvonne T van der Schouw, Daniëlle Mensink, N Charlotte Onland-Moret
Age at menarche (AAM) has been reported to be associated with the risk of cardiovascular disease (CVD), but the shape of and the mechanisms behind this association remain unclear. We reviewed the data on the association between AAM and different subtypes of CVD, and used shared genetic loci to identify possible mechanisms underlying this association using shared genetic association. We searched the databases of PubMed, Web of Science and Embase through to April 2017. We included articles with any clinically manifest CVD endpoint and for any ethnicity...
October 2017: Maturitas
https://www.readbyqxmd.com/read/28911201/gene-expression-profiling-of-puberty-associated-genes-reveals-abundant-tissue-and-sex-specific-changes-across-postnatal-development
#4
Huayun Hou, Liis Uusküla-Reimand, Maisam Makarem, Christina Corre, Shems Saleh, Ariane Metcalf, Anna Goldenberg, Mark R Palmert, And Michael D Wilson
The timing of human puberty is highly variable, sexually dimorphic, and associated with adverse health outcomes. Over 20 genes carrying rare mutations have been identified in known pubertal disorders, many of which encode critical components of the hypothalamic-pituitary-gonadal (HPG) axis. Recent genome-wide association studies (GWAS) have identified more than 100 candidate genes at loci associated with age at menarche or voice breaking in males. We know little about the spatial, temporal or postnatal expression patterns of the majority of these puberty-associated genes...
September 15, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28899828/borderline-ovarian-tumor-in-the-pediatric-and-adolescent-population-a-case-series-and-literature-review
#5
Krista J Childress, Ninad Mohan Patil, Jodi A Muscal, Jennifer E Dietrich, Rajkumar Venkatramani
STUDY OBJECTIVE: To determine the diagnosis, management, and outcome for children and adolescents with borderline ovarian tumor (BOT), To provide a review of the literature on BOT in children and adolescents. DESIGN: A retrospective cohort study of females under age 21 diagnosed with BOT between January 2001 and May 2016. SETTING: Texas Children's Hospital, Houston, Texas PARTICIPANTS: Fourteen patients (ages 12 to 18) diagnosed with BOT. MAIN OUTCOME MEASURES: Clinical presentation, pre-operative characteristics, surgical technique, cancer stage, histology, treatment, recurrence...
September 9, 2017: Journal of Pediatric and Adolescent Gynecology
https://www.readbyqxmd.com/read/28894854/the-relationship-between-breast-cancer-and-risk-factors-a-single-center-study
#6
Arzu Ozsoy, Nurdan Barca, Betul Akdal Dolek, Hafize Aktaş, Eda Elverici, Levent Araz, Ozlen Ozkaraoğlu
OBJECTIVE: To determine the relationship between breast cancer and known risk factors in patients who had mammography (MG) for breast cancer screening or ultrasonography and/or MG for diagnostic purposes. MATERIALS AND METHODS: In the period of January-December, 2011, a questionnaire composed of 17 questions was applied to 2862 female patients and MG and/or US examination was performed afterwards. Chi-square and Kruskal-Wallis tests were used for statistical analysis...
July 2017: Eur J Breast Health
https://www.readbyqxmd.com/read/28894516/menstrual-and-reproductive-factors-and-risk-of-pancreatic-cancer-in-women
#7
Sahar Masoudi, Zahra Momayez Sanat, Altun Mahmud Saleh, Neda Nozari, Neda Ghamarzad, Akram Pourshams
BACKGROUND Pancreatic cancer (PC) is a deadly disease with a 5-year survival of less than 5%. Worldwide PC incidence rates are lower among women than men. While this suggests a protective role for steroid hormones in PC risk, results from epidemiological studies are not consistent. METHODS 153 new incident PC cases and 202 controls were recruited from a prospective case-control study, running in a referral center for endoscopic ultrasonography during 2011-2017. A structured valid and reliable questionnaire was used for data collection by a few trained interviewers...
July 2017: Middle East Journal of Digestive Diseases
https://www.readbyqxmd.com/read/28872525/thumb-ossification-composite-index-toci-for-predicting-peripubertal-skeletal-maturity-and-peak-height-velocity-in-idiopathic-scoliosis-a-validation-study-of-premenarchal-girls-with-adolescent-idiopathic-scoliosis-followed-longitudinally-until-skeletal-maturity
#8
Alec L H Hung, W W Chau, B Shi, Simon K Chow, Fiona Y P Yu, T P Lam, Bobby K W Ng, Y Qiu, Jack C Y Cheng
BACKGROUND: Accurate skeletal maturity assessment is important to guide clinical evaluation of idiopathic scoliosis, but commonly used methods are inadequate or too complex for rapid clinical use. The objective of the study was to propose a new simplified staging method, called the thumb ossification composite index (TOCI), based on the ossification pattern of the 2 thumb epiphyses and the adductor sesamoid bone; to determine its accuracy in predicting skeletal maturation when compared with the Sanders simplified skeletal maturity system (SSMS); and to validate its interrater and intrarater reliability...
September 6, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28872224/birth-weight-early-life-weight-gain-and-age-at-menarche-a-systematic-review-of-longitudinal-studies
#9
REVIEW
F Juul, V W Chang, P Brar, N Parekh
BACKGROUND AND OBJECTIVE: Adiposity in pre- and postnatal life may influence menarcheal age. Existing evidence is primarily cross-sectional, failing to address temporality, for which the role of adiposity in early life remains unclear. The current study sought to systematically review longitudinal studies evaluating the associations between birth weight and infant/childhood weight status/weight gain in relation to menarcheal age. METHODS: PubMed, EMBASE, Web of Science, Global Health (Ovid) and CINAHL were systematically searched...
September 4, 2017: Obesity Reviews: An Official Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28871235/increase-of-reproductive-life-span-delays-age-of-onset-of-parkinson-s-disease
#10
Dominik Frentzel, Grigorij Judanin, Olga Borozdina, Jochen Klucken, Jürgen Winkler, Johannes C M Schlachetzki
One striking observation in Parkinson's disease (PD) is the remarkable gender difference in incidence and prevalence of the disease. Data on gender differences with regard to disease onset, motor and non-motor symptoms, and dopaminergic medication are limited. Furthermore, whether estrogen status affects disease onset and progression of PD is controversially discussed. In this retrospective single center study, we extracted clinical data of 226 ambulatory PD patients and compared age of disease onset, disease stage, motor impairment, non-motor symptoms, and dopaminergic medication between genders...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28854720/combined-androgen-excess-and-western-style-diet-accelerates-adipose-tissue-dysfunction-in-young-adult-female-nonhuman-primates
#11
Oleg Varlamov, Cecily V Bishop, Mithila Handu, Diana Takahashi, Sathya Srinivasan, Ashley White, Charles T Roberts
STUDY QUESTION: What are the separate and combined effects of mild hyperandrogenemia and consumption of a high-fat Western-style diet (WSD) on white adipose tissue (WAT) morphology and function in young adult female nonhuman primates? SUMMARY ANSWER: Combined exposure to mild hyperandrogenemia and WSD induces visceral omental (OM-WAT) but not subcutaneous (SC-WAT) adipocyte hypertrophy that is associated with increased uptake and reduced mobilization of free fatty acids...
September 1, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28845597/pubertal-growth-and-adult-height-in-relation-to-breast-cancer-risk-in-african-american-women
#12
Kimberly A Bertrand, Hanna Gerlovin, Traci N Bethea, Julie R Palmer
Adult height has been positively associated with breast cancer risk. The timing of pubertal growth - as measured by age at menarche and age at attained height - may also influence risk. We evaluated associations of adult height, age at attained height, and age at menarche with incidence of invasive breast cancer in 55,687 African American women in the prospective Black Women's Health Study. Over 20 years, 1,826 invasive breast cancers [1,015 estrogen receptor (ER) positive; 542 ER negative] accrued. We used multivariable Cox proportional hazards regression to estimate hazards ratios (HRs) and 95% confidence intervals (CIs) for associations with breast cancer overall and by ER status, mutually adjusted for the three factors of interest...
August 28, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28835472/dissecting-causal-pathways-using-mendelian-randomization-with-summarized-genetic-data-application-to-age-at-menarche-and-risk-of-breast-cancer
#13
Stephen Burgess, Deborah J Thompson, Jessica M B Rees, Felix R Day, John R Perry, Ken K Ong
Mendelian randomization is the use of genetic variants as instrumental variables to estimate causal effects of risk factors on outcomes. The total causal effect of a risk factor is the change in the outcome resulting from intervening on the risk factor. This total causal effect may potentially encompass multiple mediating mechanisms. For a proposed mediator, the direct effect of the risk factor is the change in the outcome resulting from a change in the risk factor keeping the mediator constant. A difference between the total effect and the direct effect indicates that the causal pathway from the risk factor to the outcome acts at least in part via the mediator (an indirect effect)...
August 23, 2017: Genetics
https://www.readbyqxmd.com/read/28833893/nomenclature-of-primary-amenorrhea-a-proposal-document-of-the-japan-society-of-obstetrics-and-gynecology-committee-for-the-redefinition-of-primary-amenorrhea
#14
Makio Shozu, Hiroshi Ishikawa, Reiko Horikawa, Hideya Sakakibara, Shun-Ichiro Izumi, Takashi Ohba, Yasushi Hirota, Tsutomu Ogata, Yutaka Osuga, Koji Kugu
AIM: The aim of this study was to provide medical terms to describe the condition of a girl who should be evaluated for primary amenorrhea in order to facilitate intervention at an appropriate time. METHODS: We performed a literature and clinical guidelines search for recent practices with regard to menarche and discussed relevant cases that had been experienced by committee members. Additionally, we theoretically reviewed medical terms defined in the Glossary Book of Obstetrics and Gynecology in Japan (Japan Society of Obstetrics and Gynecology, 3rd edition)...
August 17, 2017: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/28833784/menstruation-objectification-and-health-related-quality-of-life-a-questionnaire-study
#15
Herdís Sveinsdóttir
AIM: To explore young women's health-related quality of life (HRQOL) and investigate if menstrual and menarche experiences and objectification predict mental and physical health components of HRQOL. BACKGROUND: Menstruation plays a fundamental role in female biology, in women's relationship to their bodies and consequently in women's health and their HRQOL. DESIGN: Cross-sectional explorative survey design. METHOD: A questionnaire that included the SF-36v2, the Self-Objectification Questionnaire, the Body Surveillance and Body Shame subscales of the Objectified Body Consciousness Scale, the Belief and Attitudes Towards Menstruation Questionnaire (4 subscales), and questions on menarche and menstruation was administered at the end of 2013 to 319 Icelandic women who represented the population by age...
August 22, 2017: Journal of Clinical Nursing
https://www.readbyqxmd.com/read/28831686/food-versus-pharmacy-assessment-of-nutritional-and-pharmacological-strategies-to-improve-bone-health-in-energy-deficient-exercising-women
#16
REVIEW
Emily A Southmayd, Adelaide C Hellmers, Mary Jane De Souza
PURPOSE OF REVIEW: The review aims to summarize our current knowledge surrounding treatment strategies aimed at recovery of bone mass in energy-deficient women suffering from the Female Athlete Triad. RECENT FINDINGS: The independent and interactive contributions of energy status versus estrogen status on bone density, geometry, and strength have recently been reported, highlighting the importance of addressing both energy and estrogen in treatment strategies for bone health...
August 22, 2017: Current Osteoporosis Reports
https://www.readbyqxmd.com/read/28830397/the-reproducibility-of-self-reported-age-at-menarche-the-troms%C3%A3-study
#17
Marie Wasmuth Lundblad, Bjarne K Jacobsen
BACKGROUND: Previous studies of the reproducibility of self-reported age at menarche have been limited because of small study samples, short follow-up and the limited age span of the women included. METHODS: The present study assessed the reproducibility of age at menarche in 6731 women with a wide variation of age when giving the information about age at menarche. The women reported age at menarche in a self-administered questionnaire, both in 1986-1987 and 1994-1995...
August 22, 2017: BMC Women's Health
https://www.readbyqxmd.com/read/28828095/the-physique-of-elite-female-artistic-gymnasts-a-systematic-review
#18
Sarita Bacciotti, Adam Baxter-Jones, Adroaldo Gaya, José Maia
It has been suggested that successful young gymnasts are a highly select group in terms of the physique. This review summarizes the available literature on elite female gymnasts' anthropometric characteristics, somatotype, body composition and biological maturation. The main aims were to identify: (i) a common physique and (ii) the differences, if any, among competitive/performance levels. A systematic search was conducted online using five different databases. Of 407 putative papers, 17 fulfilled all criteria and were included in the review...
September 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28827837/timing-and-rate-of-spheno-occipital-synchondrosis-closure-and-its-relationship-to-puberty
#19
Anwar Alhazmi, Eduardo Vargas, J Martin Palomo, Mark Hans, Bruce Latimer, Scott Simpson
OBJECTIVES: This study examines the relationship between spheno-occipital synchondrosis (SOS) closure and puberty onset in a modern American population. It also investigates the timing and the rate of SOS closure in males and females. MATERIALS AND METHODS: The sample includes cross-sectional and longitudinal 3D Cone Beam Computed Tomography (CBCT) scans of 741 individuals (361 males and 380 females) aged 6-20 years. Each CBCT scan is visualized in the mid-sagittal plane, and the spheno-occipital synchondrosis (SOS) is scored as completely open, partially fused, mostly fused, and completely fused...
2017: PloS One
https://www.readbyqxmd.com/read/28805605/relationship-between-alcohol-consumption-and-age-at-menopause-the-korea-national-health-and-nutrition-examination-survey
#20
Jeong In Choi, Kyung-do Han, Dae Woo Lee, Min Jeong Kim, Yeon Joo Shin, Hae Nam Lee
OBJECTIVE: We used data from the 2011-2014 Korean National Health and Nutrition Examination Surveys (KNHANES) to investigate whether the age at menopause is related to alcohol consumption in South Korean women. MATERIALS AND METHODS: This was a cross-sectional study of the data for 940 women who became menopausal within the 3 years preceding the KNHANES. RESULTS: The numbers of nondrinkers, mild to moderate drinkers, and heavy drinkers in this group were 345 (34...
August 2017: Taiwanese Journal of Obstetrics & Gynecology
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