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Age at menarche

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https://www.readbyqxmd.com/read/27923781/population-attributable-risk-of-modifiable-and-nonmodifiable-breast-cancer-risk-factors-in-postmenopausal-breast-cancer
#1
Rulla M Tamimi, Donna Spiegelman, Stephanie A Smith-Warner, Molin Wang, Mathew Pazaris, Walter C Willett, A Heather Eliassen, David J Hunter
We examined the proportions of multiple types of breast cancers in the population that were attributable to established risk factors, focusing on behaviors that are modifiable at menopause. We estimated the full and partial population attributable risk percentages (PAR%) by combining the relative risks and the observed prevalence rates of the risk factors of interest. A total of 8,421 cases of invasive breast cancer developed in postmenopausal women (n = 121,700) in the Nurses' Health Study from 1980-2010...
December 6, 2016: American Journal of Epidemiology
https://www.readbyqxmd.com/read/27919437/fertile-lifespan-characteristics-and-all-cause-and-cause-specific-mortality-among-postmenopausal-women-the-rotterdam-study
#2
Loes Jaspers, Maryam Kavousi, Nicole S Erler, Albert Hofman, Joop S E Laven, Oscar H Franco
OBJECTIVE: To characterize the relation between established and previously unexplored characteristics of the fertile life with all-cause and cause-specific mortality. DESIGN: Prospective cohort study. SETTING: Not applicable. PATIENT(S): A total of 4,076 postmenopausal women. INTERVENTION(S): Women's fertile lifespan (age at menarche to menopause), number of children, maternal age at first and last child, maternal lifespan (interval between maternal age at first and last child), postmaternal fertile lifespan (interval between age at last child and menopause), lifetime cumulative number of menstrual cycles, and unopposed cumulative endogenous estrogen (E) exposure...
December 2, 2016: Fertility and Sterility
https://www.readbyqxmd.com/read/27919016/age-at-menarche-and-risk-of-developing-migraine-or-non-migraine-headaches-by-young-adulthood-a-prospective-cohort-study
#3
Nasim Maleki, Tobias Kurth, Alison E Field
IMPORTANCE: Migraine is a highly prevalent and disabling primary headache disorder that is two to three times more prevalent in young women. Among females, there is a steep increase in incidence from puberty to young adulthood, but the mechanisms for the increase are unknown. OBJECTIVE: To determine if age of menarche is a risk factor for developing migraine headache vs. non-migraine headache by young adulthood. DESIGN: A prospective cohort study, The Growing Up Today Study (GUTS), of adolescents who have been followed since 1996, when they were nine, to 14 years of age...
November 8, 2016: Cephalalgia: An International Journal of Headache
https://www.readbyqxmd.com/read/27917104/thirty-eight-year-follow-up-of-two-sibling-lipoid-congenital-adrenal-hyperplasia-patients-due-to-homozygous-steroidogenic-acute-regulatory-stard1-protein-mutation-molecular-structure-and-modeling-of-the-stard1-l275p-mutation
#4
Khalil Khoury, Elie Barbar, Youssef Ainmelk, Annie Ouellet, Pierre Lavigne, Jean-Guy LeHoux
Objective: Review the impact of StAR (STARD1) mutations on steroidogenesis and fertility in LCAH patients. Examine the endocrine mechanisms underlying the pathology of the disorder and the appropriate therapy for promoting fertility and pregnancies. Design: Published data in the literature and a detailed 38-year follow-up of two sibling LCAH patients. Molecular structure and modeling of the STARD1 L275P mutation. Setting: University hospital. Patients: Patient A (46,XY female phenotype) and patient B (46,XX female) with LCAH bearing the L275P mutation in STARD1...
2016: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/27916781/gradually-increasing-ethinyl-estradiol-for-turner-syndrome-may-produce-good-final-height-but-not-ideal-bmd
#5
Yukihiro Hasegawa, Daisuke Ariyasu, Masako Izawa, Junko Igaki-Miyamoto, Mami Fukuma, Megumi Hatano, Hiroko Yagi, Masahiro Goto
Estrogen replacement therapy in Turner syndrome should theoretically mimic the physiology of healthy girls. The objective of this study was to describe final height and bone mineral density (BMD) in a group of 17 Turner syndrome patients (group E) who started their ethinyl estradiol therapy with an ultra-low dosage (1-5 ng/kg/day) from 9.8˜13.7 years. The subjects in group E had been treated with GH 0.35 mg/kg/week since the average age of 7.4 years. The 30 subjects in group L, one of the historical groups, were given comparable doses of GH, and conjugated estrogen 0...
December 2, 2016: Endocrine Journal
https://www.readbyqxmd.com/read/27910901/risk-factors-for-endometrial-cancer-results-from-a-hospital-based-case-control-study
#6
Maryam Ghanbari Andarieh, Mouloud Agajani Delavar, Dariush Moslemi, Sedighe Esmaeilzadeh
Objectives: The purpose of this investigation was to examine the association between endometrial cancer and possible etiological agents. Methods: A case-control study was conducted in Iran between March 2012 and May 2016. The demographic and reproductive factors of 205 women with endometrial cancer were compared, and 590 healthy cases were participated in the control group. For each endometrial cancer case, there were three controls, who were matched in terms of age and residence. The data were considered significant at p ≤0...
January 10, 2016: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/27909133/the-use-of-the-distal-radius-and-ulna-classification-for-the-prediction-of-growth-peak-growth-spurt-and-growth-cessation
#7
J P Y Cheung, P W H Cheung, D Samartzis, K M C Cheung, K D K Luk
AIMS: We report the use of the distal radius and ulna (DRU) classification for the prediction of peak growth (PG) and growth cessation (GC) in 777 patients with idiopathic scoliosis. We compare this classification with other commonly used parameters of maturity. PATIENTS AND METHODS: The following data were extracted from the patients' records and radiographs: chronological age, body height (BH), arm span (AS), date of menarche, Risser sign, DRU grade and status of the phalangeal and metacarpal physes...
December 2016: Bone & Joint Journal
https://www.readbyqxmd.com/read/27905645/-morbidity-profile-among-adolescents-with-down-syndrome
#8
Antonia Cárdenas, María A Paul, Catalina Correa, Sebastián Valderrama, Jaime Cerda, Macarena Lizama
BACKGROUND: There is a paucity of information about morbidity and mortality of adolescents with Down syndrome (DS). AIM: To describe morbidity and mortality of a cohort of Chilean adolescents with DS. MATERIAL AND METHODS: Review of electronic clinical records of 67 ambulatory patients with DS aged 10 to 20 years (37 women), seen between the years 2007 and 2014 in outpatient clinics of a University hospital. RESULTS: The mean age at the last consultation was 13 ± 3 years...
August 2016: Revista Médica de Chile
https://www.readbyqxmd.com/read/27903360/-update-on-pubertal-development-among-primary-school-students-in-shanghai-2014
#9
Y Chen, Y T Zhang, C Chen, Y R Jiang, Y J Song, S J Liu, F Jiang
Objective: To investigate the current prevalence of pubertal development in healthy Shanghai schoolchildren. Methods: This study was a cross-sectional investigation focused on current pubertal development conducted in healthy Shanghai schoolchildren by multi-stage cluster sampling. The sample included 17 571 children in grades 1-5 investigated in June 2014. The data were weighted by inverse probability weighting (IPW) to make them more representative. At examination, stages of breast and pubic hair development were rated according to the Tanner method...
November 6, 2016: Zhonghua Yu Fang Yi Xue za Zhi [Chinese Journal of Preventive Medicine]
https://www.readbyqxmd.com/read/27899085/oestradiol-levels-and-superoxide-dismutase-activity-in-age-related-cataract-a-case-control-study
#10
Dragana Škiljić, Staffan Nilsson, Anne Petersen, Jan-Olof Karlsson, Anders Behndig, Lada Kalaboukhova, Madeleine Zetterberg
BACKGROUND: It has been suggested that the higher prevalence of cataract in women is caused by a withdrawal effect of oestrogen at menopause. In vitro studies have demonstrated protection of serum oestradiol (E2) against oxidative stress through upregulation of antioxidant enzymes, including superoxide dismutase (SOD). The purpose of the present study was to investigate E2 levels and SOD erythrocyte activity in patients with age-related cataract. METHODS: The studied subjects consisted of 103 patients with age-related cataract and 22 controls...
November 29, 2016: BMC Ophthalmology
https://www.readbyqxmd.com/read/27894860/pediatric-ovarian-torsion-and-its-recurrence-a-multicentric-study
#11
Mirko Bertozzi, Ciro Esposito, Claudio Vella, Vito Briganti, Nicola Zampieri, Daniela Codrich, Michele Ubertazzi, Alessandro Trucchi, Elisa Magrini, Sonia Battaglia, Vittorio Bini, Maria Luisa Conighi, Caterina Gulia, Alessandra Farina, Francesco Saverio Camoglio, Waifro Rigamonti, Piergiorgio Gamba, Giovanna Riccipetitoni, Salvatore Fabio Chiarenza, Alessandro Inserra, Antonino Appignani
STUDY OBJECTIVE: to report results of a retrospective multicentric Italian survey concerning the management of pediatric ovarian torsion (OT) and its recurrence. DESIGN: Multicentric retrospective cohort study. SETTING: Italian Units of Pediatric Surgery. PARTECIPANTS: Females 1<years-old<14 with surgically diagnosed OT between 2004-2014 . INTERVENTIONS: Adnexal detorsion, adnexectomy, mass excision by laparoscopy or laparotomy...
November 25, 2016: Journal of Pediatric and Adolescent Gynecology
https://www.readbyqxmd.com/read/27886570/menarche-menstrual-problems-and-suicidal-behavior-in-chinese-adolescents
#12
Hua Chen, Xin-Ting Wang, Qi-Gui Bo, Dao-Ming Zhang, Zhen-Biao Qi, Xianchen Liu, Cun-Xian Jia
BACKGROUND: Menarche is the first menstrual cycle. Menstrual problems, such as dysmenorrheal menorrhagia, oligomenorrhea, and irregular cycle are common in female adolescents. This research aims to examine the associations between age at menarche and menstrual problems and suicidal behavior among Chinese female adolescents. METHODS: An epidemiological survey of 5831 female adolescents from eight high schools of three counties of Shandong province, China, was conducted...
November 20, 2016: Journal of Affective Disorders
https://www.readbyqxmd.com/read/27884590/physical-activity-induced-protection-against-breast-cancer-risk-associated-with-delayed-parity
#13
Kathleen M Sturgeon, Aaron Schweitzer, John J Leonard, Deirdre K Tobias, Ying Liu, Elizabeth Cespedes Feliciano, Vasanti S Malik, Amit Joshi, Bernard Rosner, Bart C De Jonghe
Epidemiological evidence indicates that physical activity between menarche and first pregnancy is associated with a lower risk of breast cancer among women with at least 20years between these reproductive events. The mechanism by which physical activity during this interval confers protection is unknown. This study used a novel animal model to assess potentially protective effects of physical activity on tumor development in delayed parity. Thirty-six female Sprague Dawley rats received an i.p. injection of 50mg/kg N-methyl-N-nitrosourea (MNU) at 5weeks of age...
November 21, 2016: Physiology & Behavior
https://www.readbyqxmd.com/read/27880720/the-impact-of-reproductive-life-on-breast-cancer-risk-in-women-with-family-history-or-brca-mutation
#14
Angela Toss, Giovanni Grandi, Angelo Cagnacci, Luigi Marcheselli, Silvia Pavesi, Elisabetta De Matteis, Elisabetta Razzaboni, Chiara Tomasello, Stefano Cascinu, Laura Cortesi
Reproductive history and exogenous hormonal exposures are acknowledged risk factors for breast cancer in the general population. In women at increased breast cancer risk for genetic predisposition or positive family history, data regarding these risk factors are limited or conflicting, and recommendations for these categories are unclear. We evaluated the characteristics of reproductive life in 2522 women at increased genetic or familial breast cancer risk attending our Family Cancer Center. Breast cancers in BRCA mutation carriers were more likely to be hormone receptor negative, diagnosed at 35 years or before and multiple during the lifetime than tumors in women at increased familial risk, while the distribution of invasive cancers and HER2 positive tumors was similar in the different risk groups...
November 17, 2016: Oncotarget
https://www.readbyqxmd.com/read/27878860/the-role-of-menstruation-in-women-s-objectification-a-questionnaire-study
#15
Herdís Sveinsdóttir
AIM: To investigate the concepts of objectification and self-objectification among young women in the context of attitudes towards menstruation, menstrual suppression, menstrual and menarche experiences, disorder eating and exercise habits and to detect predictors of objectification and self-objectification. BACKGROUND: The negative effects of objectification are well founded. Considering the central role menstruation plays in female biology, it comes as quite a surprise that so little attention is given to the subject in the research on objectification...
November 23, 2016: Journal of Advanced Nursing
https://www.readbyqxmd.com/read/27876139/conversations-between-insulin-and-bone-potential-mechanism-of-high-bone-density-in-patients-with-berardinelli-seip-congenital-lipodystrophy
#16
Josivan Gomes Lima, Natalia Nobrega Lima, Lucia Helena C Nobrega, Selma Maria B Jeronimo
Berardinelli-Seip Congenital Lipodystrophy (BSCL) is a rare autosomal recessive syndrome characterized by a difficulty storing lipid in adipocytes, low body fat, hypertriglyceridemia, and fat liver. The serum leptin is usually very low, and serum insulin, as well as HOMAIR (homeostasis model assessment), is very high and correlated positively with bone mineral density (BMD). Despite deficiency/insufficiency of vitamin D, low body mass index, low daily calcium intake, physical inactivity, and menarche at a later age, BSCL patients usually have normal or even high BMD...
December 2016: Medical Hypotheses
https://www.readbyqxmd.com/read/27875544/extensive-association-of-common-disease-variants-with-regulatory-sequence
#17
Michal Mokry, Magdalena Harakalova, Folkert W Asselbergs, Paul I W de Bakker, Edward E S Nieuwenhuis
Overlap between non-coding DNA regulatory sequences and common variant associations can help to identify specific cell and tissue types that are relevant for particular diseases. In a systematic manner, we analyzed variants from 94 genome-wide association studies (reporting at least 12 loci at p<5x10-8) by projecting them onto 466 epigenetic datasets (characterizing DNase I hypersensitive sites; DHSs) derived from various adult and fetal tissue samples and cell lines including many biological replicates...
2016: PloS One
https://www.readbyqxmd.com/read/27865559/analysis-of-sexual-function-of-patients-with-dermatomyositis-and-polymyositis-through-self-administered-questionnaires-a-cross-sectional-study
#18
Fernando Henrique Carlos de Souza, Daniel Brito de Araújo, Clovis Artur Silva, Renata Miossi, Carmita Helena Najjar Abdo, Eloisa Bonfá, Samuel Katsuyuki Shinjo
INTRODUCTION: To date, there are no descriptions in the literature on gynecologic and sexual function evaluation in female patients with dermatomyositis (DM) and polymyositis (PM). OBJECTIVE: To assess sexual function in female patients with DM/PM. PATIENTS AND METHODS: This is a monocentric, cross-sectional study in which 23 patients (16 DM and 7 PM), with ages between 18 and 40 years, were compared to 23 healthy women of the same age group...
November 1, 2016: Revista Brasileira de Reumatologia
https://www.readbyqxmd.com/read/27845421/rs2735383-located-at-a-microrna-binding-site-in-the-3-utr-of-nbs1-is-not-associated-with-breast-cancer-risk
#19
Jingjing Liu, Ivona Lončar, J Margriet Collée, Manjeet K Bolla, Joe Dennis, Kyriaki Michailidou, Qin Wang, Irene L Andrulis, Monica Barile, Matthias W Beckmann, Sabine Behrens, Javier Benitez, Carl Blomqvist, Bram Boeckx, Natalia V Bogdanova, Stig E Bojesen, Hiltrud Brauch, Paul Brennan, Hermann Brenner, Annegien Broeks, Barbara Burwinkel, Jenny Chang-Claude, Shou-Tung Chen, Georgia Chenevix-Trench, Ching Y Cheng, Ji-Yeob Choi, Fergus J Couch, Angela Cox, Simon S Cross, Katarina Cuk, Kamila Czene, Thilo Dörk, Isabel Dos-Santos-Silva, Peter A Fasching, Jonine Figueroa, Henrik Flyger, Montserrat García-Closas, Graham G Giles, Gord Glendon, Mark S Goldberg, Anna González-Neira, Pascal Guénel, Christopher A Haiman, Ute Hamann, Steven N Hart, Mikael Hartman, Sigrid Hatse, John L Hopper, Hidemi Ito, Anna Jakubowska, Maria Kabisch, Daehee Kang, Veli-Matti Kosma, Vessela N Kristensen, Loic Le Marchand, Eunjung Lee, Jingmei Li, Artitaya Lophatananon, Jan Lubinski, Arto Mannermaa, Keitaro Matsuo, Roger L Milne, Susan L Neuhausen, Heli Nevanlinna, Nick Orr, Jose I A Perez, Julian Peto, Thomas C Putti, Katri Pylkäs, Paolo Radice, Suleeporn Sangrajrang, Elinor J Sawyer, Marjanka K Schmidt, Andreas Schneeweiss, Chen-Yang Shen, Martha J Shrubsole, Xiao-Ou Shu, Jacques Simard, Melissa C Southey, Anthony Swerdlow, Soo H Teo, Daniel C Tessier, Somchai Thanasitthichai, Ian Tomlinson, Diana Torres, Thérèse Truong, Chiu-Chen Tseng, Celine Vachon, Robert Winqvist, Anna H Wu, Drakoulis Yannoukakos, Wei Zheng, Per Hall, Alison M Dunning, Douglas F Easton, Maartje J Hooning, Ans M W van den Ouweland, John W M Martens, Antoinette Hollestelle
NBS1, also known as NBN, plays an important role in maintaining genomic stability. Interestingly, rs2735383 G > C, located in a microRNA binding site in the 3'-untranslated region (UTR) of NBS1, was shown to be associated with increased susceptibility to lung and colorectal cancer. However, the relation between rs2735383 and susceptibility to breast cancer is not yet clear. Therefore, we genotyped rs2735383 in 1,170 familial non-BRCA1/2 breast cancer cases and 1,077 controls using PCR-based restriction fragment length polymorphism (RFLP-PCR) analysis, but found no association between rs2735383CC and breast cancer risk (OR = 1...
November 15, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27836305/age-at-menarche-and-risk-of-major-cardiovascular-diseases-evidence-of-birth-cohort-effects-from-a-prospective-study-of-300-000-chinese-women
#20
Ling Yang, Liming Li, Iona Y Millwood, Sanne A E Peters, Yiping Chen, Yu Guo, Zheng Bian, Xiaofang Chen, Lingli Chen, Shixian Feng, Silu Lv, Zhigang Pang, Mark Woodward, Zhengming Chen
BACKGROUND: Previous studies of mostly Western women have reported inconsistent findings on the association between age at menarche and risk of cardiovascular disease (CVD). Little is known about the association in China where there has been a large intergenerational decrease in women's mean age at menarche. METHODS: The China Kadoorie Biobank recruited 302,632 women aged 30-79 (mean 50.5)years in 2004-8 from 10 diverse regional sites across China. During 7years follow-up, 14,111 incident cases of stroke, 14,093 of coronary heart disease (CHD), and 3200 CVD deaths were reported among 281,491 women who had no prior history of CVD at baseline...
November 4, 2016: International Journal of Cardiology
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