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Age at menarche

Raffaele Nuzzi, Simona Scalabrin, Alice Becco, Giancarlo Panzica
Aim: Gonadal hormones are essential for reproductive function, but can act on neural and other organ systems, and are probably the cause of the large majority of known sex differences in function and disease. The aim of this review is to provide evidence for this hypothesis in relation to eye disorders and to retinopathies in particular. Methods: Epidemiological studies and research articles were reviewed. Results: Analysis of the biological basis for a relationship between eye diseases and hormones showed that estrogen, androgen, and progesterone receptors are present throughout the eye and that these steroids are locally produced in ocular tissues...
2018: Frontiers in Endocrinology
Gül Yücel, Mustafa Kendirci, Ülkü Gül
STUDY OBJECTIVE: To determine the cross-sectional characteristics of menstruating girls, dysmenorrhea and the frequencies of related problems. DESIGN: Descripitive, cross-sectional study. SETTING: Randomly selected primary, junior and high schools in the city center of Kayseri. PARTICIPANTS: 2000 female adolescents of ages between 9 and 18 years. MAIN OUTCOME MEASURE: We used a questionnaire addressing the epidemiological characteristics of menstruation, such as age at menarche, duration of menstrual intervals, average days of bleeding, and any menstrual problems and their frequencies...
March 14, 2018: Journal of Pediatric and Adolescent Gynecology
Dipender Gill, Christopher F Brewer, Fabiola Del Greco M, Prasanthi Sivakumaran, Jack Bowden, Nuala A Sheehan, Cosetta Minelli
BACKGROUND: Pubertal timing has psychological and physical sequelae. While observational studies have demonstrated an association between age at menarche and adult body mass index (BMI), confounding makes it difficult to infer causality. METHODS: The Mendelian randomization (MR) technique is not limited by traditional confounding and was used to investigate the presence of a causal effect of age at menarche on adult BMI. MR uses genetic variants as instruments under the assumption that they act on BMI only through age at menarche (no pleiotropy)...
February 26, 2018: International Journal of Obesity: Journal of the International Association for the Study of Obesity
Joachim Woelfle, Anders Lindberg, Ferah Aydin, Ken K Ong, Cecilia Camacho-Hubner, Bettina Gohlke
Background: Whether children with chromosomal disorders of growth and puberty are affected by secular trends (STs) as observed in the general population remains unanswered, but this question has relevance for expectations of spontaneous development and treatment responses. Objectives: The aim of the study was to evaluate STs in birth parameters, growth, and pubertal development in girls with Turner syndrome (TS). Study design: Retrospective analysis of KIGS data (Pfizer International Growth Database)...
2018: Frontiers in Endocrinology
Sumeya A Kheiri, Abdelillah Kunna, Ali Yousif Babiker, Sultan A Alsuhaibani, Rami Yousif Ahmed, Mohamed Alkhatim Alsammani
INTRODUCTION: Ovarian cancer is the cause of a high case-fatality ratio, and most of the cases are diagnosed in late stages. OBJECTIVES: To determine the histopathological types, age distribution, and ovarian tumour stages among diagnosed with ovarian cancer at Al - Amal Tower a multi-referral polyclinic of Radiology & Isotope Center Khartoum (RICK), Sudan. METHODS: All histopathology reports patients' case from January to June 2015 were reviewed...
February 15, 2018: Open Access Macedonian Journal of Medical Sciences
Sultana Monira Hussain, Yuanyuan Wang, Graham G Giles, Stephen Graves, Anita E Wluka, Flavia M Cicuttini
OBJECTIVES: To examine the associations of female reproductive and hormonal factors with incidence of total knee arthroplasty (TKA) for osteoarthritis, and whether the associations differ according to overweight/obesity status. DESIGN: This study included 22,289 women in the Melbourne Collaborative Cohort Study. Data on age at menarche, pregnancy, parity, years of menstruation, oral contraceptive pill (OCP), menopausal status and hormone replacement therapy (HRT) were collected in 1990-1994...
March 7, 2018: Arthritis & Rheumatology
Bernd Lenz, Polyxeni Bouna-Pyrrou, Christiane Mühle, Johannes Kornhuber
BACKGROUND: Alcohol binge drinking behavior is an important public health issue. Causal rodent and human associational studies show that reinforcement of prenatal androgen signaling increases alcohol consumption in adulthood. However, the effects of prenatal androgen exposure on adult binge drinking patterns have not been investigated yet. METHOD: We analyzed data from 2225 participants of an online survey (conducted 06-07/2016) to evaluate biomarkers for prenatal androgen exposure (second-to-fourth finger length ratio [2D:4D], age at spermarche or menarche as hallmark for pubertal onset) in binge drinking (≥1 episode of 15+, 10+, and/or 5+ standard drinks of ~12 g of alcohol within 2 h during the 24 month- and 2 week-recall periods)...
February 27, 2018: Progress in Neuro-psychopharmacology & Biological Psychiatry
Martin J Prince, Daisy Acosta, Mariella Guerra, Yueqin Huang, Ivonne Z Jimenez-Velazquez, Juan J Llibre Rodriguez, Aquiles Salas, Ana Luisa Sosa, Kia-Chong Chua, Michael E Dewey, Zhaorui Liu, Rosie Mayston, Adolfo Valhuerdi
BACKGROUND: Exposure to endogenous estrogen may protect against dementia, but evidence remains equivocal. Such effects may be assessed more precisely in settings where exogenous estrogen administration is rare. We aimed to determine whether reproductive period (menarche to menopause), and other indicators of endogenous estrogen exposure are inversely associated with dementia incidence. METHODS: Population-based cohort studies of women aged 65 years and over in urban sites in Cuba, Dominican Republic, Puerto Rico and Venezuela, and rural and urban sites in Peru, Mexico and China...
2018: PloS One
G A Shilovsky, T S Putyatina, V V Ashapkin, O S Luchkina, A V Markov
Measurements of variation are of great importance for studying the stability of pathological phenomena and processes. For the biology of aging, it is very important not only to determine average mortality, but also to study its stability in time and the size of fluctuations that are indicated by the variation coefficient of lifespan (CVLS ). It is believed that a relatively small (~20%) value of CVLS in humans, comparable to the coefficients of variation of other events programmed in ontogenesis (for example, menarche and menopause), indicates a relatively rigid determinism (N...
December 2017: Biochemistry. Biokhimii︠a︡
Lauren C Houghton, Mandy Goldberg, Ying Wei, Piera M Cirillo, Barbara A Cohn, Karin B Michels, Mary Beth Terry
PURPOSE: Studies suggests that intrauterine exposure to maternal smoking both accelerates or delays age at menarche. We hypothesize that these opposing findings relate to different infant and childhood growth patterns across cohorts. METHODS: Using data from an adult follow-up study of the Child Health and Development Studies and the National Collaborative Perinatal Project, we examined, using generalized estimating linear regression models, whether intrauterine exposure to maternal smoking was associated with age at menarche in 1090 daughters before and after accounting for growth in weight...
March 2018: Annals of Epidemiology
Rebecca Troisi, Tone Bjørge, Mika Gissler, Tom Grotmol, Cari M Kitahara, Solbjørg Makalani Myrtveit Saether, Anne Gulbech Ording, Camilla Sköld, Henrik Toft Sørensen, Britton Trabert, Ingrid Glimelius
An understanding of the origin of cancer is critical for cancer prevention and treatment. Complex biological mechanisms promote carcinogenesis, and there is increasing evidence that pregnancy-related exposures influence fetal growth cell division and organ functioning and may have a long-lasting impact on health and disease susceptibility in the mothers and offspring. Nulliparity is an established risk factor for breast, ovarian, endometrial, and possibly pancreatic cancer, while the risk of kidney cancer is elevated in parous compared with nulliparous women...
February 24, 2018: Journal of Internal Medicine
Antonio Carrascosa, Diego Yeste, Antonio Moreno-Galdó, Miquel Gussinyé, Ángel Ferrández, María Clemente, Mónica Fernández-Cancio
INTRODUCTION: Pubertal growth pattern differs according to age at pubertal growth spurt onset which occurs over a five years period (girls: 8-13 years, boys: 10-15 years). The need for more than one pubertal reference pattern has been proposed. We aimed to obtain five 1-year-age-interval pubertal patterns. SUBJECTS AND METHODS: Longitudinal (6 years of age-adult height) growth study of 1,453 healthy children to evaluate height-for-age, growth velocity-for-age and weight-for-age values...
February 20, 2018: Anales de Pediatría: Publicación Oficial de la Asociación Española de Pediatría (A.E.P.)
Aneta Monika Gawlik, Magdalena Hankus, Kamila Szeliga, Aleksandra Antosz, Tomasz Gawlik, Kamil Soltysik, Agnieszka Drosdzol-Cop, Krzysztof Wilk, Grzegorz Kudela, Tomasz Koszutski, Ewa Malecka-Tendera
Objective: Estrogen replacement therapy (ERT) for Turner syndrome (TS) is a widely discussed topic; however, the optimal model of ERT for patients with delayed diagnosis and/or initiation of therapy is still unclear, mainly due to insufficient data. We present the results of a prospective observational single-center study in which the efficacy of late-onset puberty induction by one-regimen transdermal ERT in TS girls was evaluated. Methods: The analysis encompassed 49 TS girls (63...
2018: Frontiers in Endocrinology
Iris Yaish, Foad Azem, Orit Gutfeld, Zmira Silman, Merav Serebro, Orli Sharon, Gabi Shefer, Rona Limor, Naftali Stern, Karen M Tordjman
BACKGROUND: Women of reproductive age with differentiated thyroid cancer (DTC) often need to receive radioactive iodine (RAI) treatment after surgery. In contrast to the well documented effect of RAI on testicular function, the potential negative effects of this treatment on ovarian reserve have been largely dismissed. The objective of this pilot study was to examine the possibility that RAI treatment is deleterious to the ovarian reserve by prospectively measuring the concentration of anti-Müllerian hormone (AMH) after this treatment...
February 21, 2018: Thyroid: Official Journal of the American Thyroid Association
Pınar Kocaay, Zeynep Siklar, Sema Buyukfirat, Merih Berberoglu
STUDY OBJECTIVE: Polycystic ovarian syndrome (PCOS) is a common endocrine disorder characterized by hyperandrogenism and chronic anovulation, which affects 5-10% of reproductive age females. Diagnosis of adult patients with PCOS is made easily with clinical and laboratory methods and the antimullerian hormone (AMH) level are accepted as a good indicator. However, there is still no complete consensus on the diagnosis of PCOS in adolescents. DESIGN: and Settings: Prospective cohort study, December 2013 to November 2014 PARTICIPANTS: The study was conducted on adolescent girls with oligomenorrhea, with at least two years since menarche...
February 17, 2018: Journal of Pediatric and Adolescent Gynecology
Hee Kyung Park, Sindana Ilango, Christina M Charriez, Harvey Checkoway, David Riley, David G Standaert, Yvette Bordelon, David R Shprecher, Stephen G Reich, Deborah Hall, Benzi Kluger, Connie Marras, Joseph Jankovic, Richard Dubinsky, Irene Litvan
BACKGROUND: Studies suggesting a protective effect of estrogen in neurodegenerative diseases prompted us to investigate this relationship in progressive supranuclear palsy (PSP). METHODS: This case-control study evaluated the self-reported reproductive characteristics and estrogen of 150 women with PSP and 150 age-matched female controls who participated in the Environmental Genetic-PSP study. Conditional logistic regression models were generated to examine associations of PSP with estrogen...
February 20, 2018: Movement Disorders: Official Journal of the Movement Disorder Society
Bruna Lucas Briskiewicz, Sandhi Maria Barreto, Joana Ferreira do Amaral, Maria de Fátima Haueisen Sander Diniz, Maria Del Carmen Bisi Molina, Sheila Maria Alvim Matos, Letícia de Oliveira Cardoso, Gustavo Velasquez-Melendez, Maria Inês Schmidt, Luana Giatti
OBJECTIVE: In the present study we investigated gender-specific associations of low birth weight (LBW) and shorter relative leg length with metabolic syndrome (MetS) after adjusting for sociodemographic characteristics and health-related behaviours. We also investigated whether these associations are independent of age at menarche and BMI at 20 years old. DESIGN: Cross-sectional analysis. SUBJECTS: Baseline data from 12 602 participants (35-74 years) of the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil), 2008-2010...
February 19, 2018: Public Health Nutrition
Jet van der Kemp, Yvonne T van der Schouw, Folkert W Asselbergs, N Charlotte Onland-Moret
Heart failure is a complex disease, which is presented differently by men and women. Several studies have shown that reproductive factors, such as age at natural menopause, parity and polycystic ovarian syndrome (PCOS), may play a role in the development of heart failure. Shared genetics may provide clues to underlying mechanisms; however, this has never been examined. Therefore, the aim of the current study was to explore whether any reproductive factor is potentially related to heart failure in women, based on genetic similarities...
March 2018: Maturitas
A Z Pollack, K Rivers, K A Ahrens
STUDY QUESTION: Is telomere length related to parity among a nationally representative sample of US reproductive age women? SUMMARY ANSWER: History of live birth was associated with shorter telomere length. WHAT IS KNOWN ALREADY: Shorter telomeres have been linked with a range of chronic health conditions and mortality and parity has been associated with health indicators. However, there is a lack of research on how parity relates to telomere length...
February 14, 2018: Human Reproduction
Maria C Magnus, Debbie A Lawlor, Stamatina Iliodromiti, Sandosh Padmanabhan, Scott M Nelson, Abigail Fraser
BACKGROUND: Previous studies of age at menarche and cardiometabolic health report conflicting findings, and only a few could account for childhood characteristics. We aimed to estimate the associations of age at menarche with cardiovascular risk factors in unrelated women and within sister groups, under the assumption that within-sibship estimates will be better adjusted for shared genetics and early life environment. METHODS AND RESULTS: Our study included 7770 women, from 5984 sibships, participating in the GS:SFHS (Generation Scotland: Scottish Family Health Study)...
February 10, 2018: Journal of the American Heart Association
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