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https://www.readbyqxmd.com/read/29667360/menstrual-and-reproductive-factors-and-type-2-diabetes-risk-the-japan-public-health-center-based-prospective-study
#1
Akiko Nanri, Tetsuya Mizoue, Mitsuhiko Noda, Atsushi Goto, Norie Sawada, Shoichiro Tsugane
AIMS/INTRODUCTION: Menstrual and reproductive factors, including age at menarche, parity, and breastfeeding, have been linked to type 2 diabetes risk. We prospectively investigated the association between these factors and type 2 diabetes risk in a large Japanese cohort. MATERIALS AND METHODS: Participants were 37,511 women aged 45-75 years who participated in the baseline (1990-1993), second (1995-1998), and third surveys (2000-2003) of the Japan Public Health Center-based Prospective Study and who had no history of diabetes at the second survey...
April 18, 2018: Journal of Diabetes Investigation
https://www.readbyqxmd.com/read/29662858/reference-values-for-serum-ferritin-and-percentage-of-transferrin-saturation-in-korean-children-and-adolescents
#2
Hea Lin Oh, Jun Ah Lee, Dong Ho Kim, Jung Sub Lim
Background: Ferritin reference values vary by age, gender, and ethnicity. We aimed to determine reference values of serum ferritin (SF) and the percentage of transferrin saturation (TSAT) for Korean children and adolescents. Methods: We analyzed data from 2,487 participants (1,311 males and 1,176 females) aged 10-20 years from the Korea National Health and Nutrition Examination Survey (2010-2012). We calculated age- and gender-stratified means and percentile values for SF and TSAT...
March 2018: Blood Research
https://www.readbyqxmd.com/read/29655530/lifetime-endogenous-estrogen-exposure-and-disease-severity-in-female-patients-with-facioscapulohumeral-muscular-dystrophy
#3
Karlien Mul, Corinne G C Horlings, Nicol C Voermans, Tim H A Schreuder, Baziel G M van Engelen
Facioscapulohumeral muscular dystrophy (FSHD) is characterized by large variability in disease severity, that is only partly explained by (epi)genetic factors. Clinical observations and recent in vitro work suggest a protective effect of estrogens in FSHD. The aims of this study were to assess whether the lifetime endogenous estrogen exposure contributes to the variability in disease severity in female patients, and whether female patients experience changes in disease progression during periods of hormonal changes...
March 8, 2018: Neuromuscular Disorders: NMD
https://www.readbyqxmd.com/read/29653063/functional-evaluation-of-znf350-missense-genetic-variants-associated-with-breast-cancer-susceptibility
#4
Nasha Zhang, Youhua Lu, Xijun Liu, Dianke Yu, Zheng Lv, Ming Yang
ZNF350, a BRCA1-interacting protein, could mediate BRCA1-induced sequence-specific transcriptional repression of several genes, including GADD45α. As a potential breast cancer susceptibility gene, single nucleotide polymorphisms (SNPs), especially missense SNPs, may influence the transcriptional repression of its target tumor suppressor genes and individuals' breast cancer risk. Using the gene-based haplotype-tagging SNPs strategy, we evaluated the association between six ZNF350 polymorphisms and breast cancer risk in a case-control set from a northern Chinese population...
April 13, 2018: DNA and Cell Biology
https://www.readbyqxmd.com/read/29652213/ovarian-reserve-in-young-juvenile-idiopathic-arthritis-patients
#5
Gabriela R V Ferreira, Renato B Tomioka, Nadia E Aikawa, Elaine P Leon, Gustavo A R Maciel, Paulo C Serafini, Edmund C Baracat, Claudia Goldenstein-Schainberg, Rosa M R Pereira, Eloisa Bonfá, Clovis A Silva
OBJECTIVES: Juvenile idiopathic arthritis (JIA) occurs during reproductive age, however, there are not systematic data regarding ovarian function in this disease. METHODS: Twenty-eight post-pubertal JIA patients and age-matched 28 healthy controls were studied. Complete ovarian function was assessed during the early follicular phase of the menstrual cycle including anti-Müllerian hormone (AMH), estradiol, luteinizing hormone (LH), follicle stimulating hormone (FSH) and antral follicle count (AFC) by ovarian ultrasound, and anti-corpus lutheum antibodies (anti-CoL)...
April 13, 2018: Modern Rheumatology
https://www.readbyqxmd.com/read/29629053/effective-factors-on-menstrual-health-among-female-students-in-bam-city-a-qualitative-study
#6
Mohammad Ali Morowatisharifabad, Aliakbar Vaezi, Neda Mohammadinia
Background: Menarche is an independent puberty event in a girl's life, and is associated with physical growth, ability in marriage and fertility. Therefore, poor menstrual health can be a major determinant of morbidity, as well as physical, mental and social problems in this age group. Objective: The aim of this study was to explore the effective factors on menstrual health among female students in Bam city. Methods: The qualitative study was conducted using content analysis approach in 2017...
February 2018: Electronic Physician
https://www.readbyqxmd.com/read/29627127/the-action-of-estrogens-and-progestogens-in-the-young-female-breast
#7
Irene Zolfaroli, Juan J Tarín, Antonio Cano
Evidence from different sources sustains a pro-oncogenic role of hormones, estrogens and progestogens, on the breast. The issue is of interest for young women, who are exposed to the hormonal changes imposed by the ovarian cycle and, often, take hormones with contraceptive purposes. Experimental and clinical studies show that both estrogens and progesterone are involved in mammary development during puberty and lactation, the changes being observed across mammalian species, including humans. Estrogen receptors, and more particularly the alpha isoform, participate in molecular processes of stem cells differentiation and epithelial proliferation through paracrine actions implicating growth factors...
March 28, 2018: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/29626450/female-specific-association-between-variants-on-chromosome-9-and-self-reported-diagnosis-of-irritable-bowel-syndrome
#8
Ferdinando Bonfiglio, Tenghao Zheng, Koldo Garcia-Etxebarria, Fatemeh Hadizadeh, Luis Bujanda, Francesca Bresso, Lars Agreus, Anna Andreasson, Aldona Dlugosz, Greger Lindberg, Peter T Schmidt, Pontus Karling, Bodil Ohlsson, Magnus Simren, Susanna Walter, Gerardo Nardone, Rosario Cuomo, Paolo Usai-Satta, Francesca Galeazzi, Matteo Neri, Piero Portincasa, Massimo Bellini, Giovanni Barbara, Anna Latiano, Matthias Hübenthal, Vincent Thijs, Mihai G Netea, Daisy Jonkers, Lin Chang, Emeran A Mayer, Mira M Wouters, Guy Boeckxstaens, Michael Camilleri, Andre Franke, Alexandra Zhernakova, Mauro D'Amato
BACKGROUND & AIMS: Genetic factors are believed to affect risk for irritable bowel syndrome (IBS), but there have been no sufficiently powered and adequately sized studies. To identify DNA variants associated with IBS risk, we performed a genome-wide association study (GWAS) of the large UK Biobank population-based cohort, which includes genotype and health data from 500,000 participants. METHODS: We studied 7,287,191 high-quality single-nucleotide polymorphisms in individuals who self-reported a doctor's diagnosis of IBS (cases; m=9576) compared to the remainder of the cohort (controls; n=336,499) (mean age of study subjects, 40-69 years)...
April 4, 2018: Gastroenterology
https://www.readbyqxmd.com/read/29624940/exploring-the-causes-of-change-in-adolescent-girls-sexual-behaviour-in-begoro-ghana
#9
Sylvia E Gyan
There is a changing trend in adolescent girls' sexual and reproductive behaviour in Ghana. However, contemporary perspectives on adolescent girls' sexual behaviours are largely missing hence this study. Thematic analysis of data collected through in-depth interviews with adolescent girls and community members as well as focus group discussions with adolescent boys identified several factors accounting for the changes in adolescent girls' sexual and reproductive behaviour. These factors include changes in girls' attitudes to traditional practices, diversity in the agents of socialization as well as the age at menarche...
June 2017: African Journal of Reproductive Health
https://www.readbyqxmd.com/read/29623657/a-case-of-primary-familial-congenital-polycythemia-with-a-novel-epor-mutation-possible-spontaneous-remission-alleviation-by-menstrual-bleeding
#10
Naohisa Toriumi, Makoto Kaneda, Naoki Hatakeyama, Hiromi Manabe, Kazuki Okajima, Yukari Sakurai, Masayo Yamamoto, Takeo Sarashina, Katsuya Ikuta, Hiroshi Azuma
A 10-year-old girl with persistent erythrocytosis and ruddy complexion was diagnosed with primary familial congenital polycythemia (PFCP) involving a novel heterozygous mutation of c.1220C>A, p.Ser407X in exon 8 of the erythropoietin receptor gene (EPOR). This mutation causes truncation of EPOR, resulting in loss of the cytoplasmic region, which is necessary for negative regulation of erythropoietin signal transmission. Genetic analysis showed that the mutated EPOR was inherited from her mother. Her mother had polycythemia and had undergone venesection several times when she was young, but her polycythemic state appeared to have resolved...
April 5, 2018: International Journal of Hematology
https://www.readbyqxmd.com/read/29617818/fshb-211-g-t-is-a-major-genetic-modulator-of-reproductive-physiology-and-health-in-childbearing-age-women
#11
Kristiina Rull, Marina Grigorova, Aivar Ehrenberg, Pille Vaas, Aire Sekavin, Diana Nõmmemees, Mart Adler, Ele Hanson, Peeter Juhanson, Maris Laan
STUDY QUESTION: Are the genetic variants FSHB -211 G>T (rs10835638), FSHR c.2039 A>G (Asn680Ser, rs6166) and FSHR -29 G>A (rs1394205) associated with serum FSH, LH and anti-Müllerian hormone (AMH) levels in reproductive age women, their menstrual cycle parameters and risk of infertility? SUMMARY ANSWER: Only the FSHB -211 G>T variant was a major genetic determinant of serum gonadotropin levels in both, eumenorrheic healthy women and female infertility patients, and the T-allele carrier status was enriched among idiopathic infertility cases...
March 30, 2018: Human Reproduction
https://www.readbyqxmd.com/read/29615064/childhood-and-adolescent-phenol-and-phthalate-exposure-and-the-age-of-menarche-in-latina-girls
#12
Alexandra M Binder, Camila Corvalan, Antonia M Calafat, Xiaoyun Ye, Verónica Mericq, Ana Pereira, Karin B Michels
BACKGROUND: The age of menarche has been associated with metabolic and cardiovascular disease, as well as cancer risk. The decline in menarcheal age over the past century may be partially attributable to increased exposure to endocrine disrupting chemicals (EDCs). METHODS: We assessed the influence of 26 phenol and phthalate biomarkers on the timing of menarche in a longitudinal cohort of Chilean girls. These EDCs were quantified in urine collected prior to the onset of breast development (Tanner 1; B1), and during adolescence (Tanner 4; B4)...
April 3, 2018: Environmental Health: a Global Access Science Source
https://www.readbyqxmd.com/read/29614272/sun-protection-behaviour-pubertal-development-and-menarche-factors-influencing-the-melanocytic-nevi-development-the-results-of-a-observational-study-on-1512-children
#13
Vincenzo De Giorgi, Alessia Gori, Antonella Greco, Imma Savarese, Barbara Alfaioli, Marta Grazzini, Susanna Rossari, Federica Papi, Federica Scarfì, Agata Janowska, Antonietta D'Errico, Lorenzo Salvati, Piero Covarelli, Sara Gandini
Observational studies consistently show that melanocytic nevus prevalence increases with age and that phenotypic traits are significantly associated with nevus count in children. An observational study of 1512 children and adolescents from 2010 to 2013 was conducted. Study dermatologists counted the full body, arm, and facial nevi of each participant. Children and their parents were asked to complete a survey to gather data on personal characteristics, pubertal development and early-life sun exposure. The main aim of the study was to establish pediatric nevus prevalence and its relationship to age, phenotype, sex, menarche, early-life sun exposure, and sun-protection behaviors...
March 31, 2018: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/29608810/menstruation-related-headache-in-adolescents-point-prevalence-and-associated-factors
#14
K B Carman, D Arslantas, A Unsal, E Atay, E E Ocal, Z Demirtas, R Saglan, M Dinleyici, C Yarar
BACKGROUND: To study the prevalence of menstruation-related headache and the impact of associated factors in adolescents. METHODS: This cross-sectional study was conducted in seven randomly selected high schools, and 3,886 girls attending those schools were invited. After the consent of the school principals, a final total of 2,485 girls (63.9%) were involved in the study. A specific questionnaire was distributed to adolescent girls (14-19 years old). The first part of the survey investigated the features of menstruation (age of first menstruation, duration of period, pad fully soaked per day)...
April 2, 2018: Pediatrics International: Official Journal of the Japan Pediatric Society
https://www.readbyqxmd.com/read/29605402/the-prevalence-of-migraines-in-adolescents-with-endometriosis
#15
Jerri A Miller, Stacey A Missmer, Allison F Vitonis, Vishnudas Sarda, Marc R Laufer, Amy D DiVasta
OBJECTIVE: To determine the prevalence and experience of migraines in adolescents with surgically confirmed endometriosis compared with those without endometriosis. DESIGN: Cross-sectional study conducted within The Women's Health Study: From Adolescence to Adulthood-an ongoing longitudinal cohort. SETTING: Boston Center for Endometriosis. PATIENT(S): Adolescent females enrolled November 2012 through November 2016. The case group included adolescents surgically diagnosed with endometriosis...
March 28, 2018: Fertility and Sterility
https://www.readbyqxmd.com/read/29580044/alcohol-consumption-as-a-risk-factor-for-breast-cancer-development-a-case-control-study-in-brazil
#16
Roberto Vieira, Juan Sebastián Sánchez Tobar, Rita Dardes, Luiz Claudio, Santos Thuler
Background: Alcohol consumption is a well-established risk factor for breast cancer, but the evidence is mostly from developed countries. Brazil is going through a rapid demographic expansion, and studies of this relationship are also needed in such unexplored settings. Methods: We assessed the relationship between alcohol consumption and breast cancer risk among 1,506 Brazilian women (406 cases and 1,100 controls). Regression models were used to calculate odds ratios (OR) and 95% confidence intervals (CI)...
March 27, 2018: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/29575815/impact-of-age-at-menarche-on-obesity-and-glycemic-control-in-japanese-patients-with-type-2-diabetes-fukuoka-diabetes-registry
#17
Akiko Sumi, Masanori Iwase, Udai Nakamura, Hiroki Fujii, Toshiaki Ohkuma, Hitoshi Ide, Tamaki Jodai-Kitamura, Yuji Komorita, Masahito Yoshinari, Takanari Kitazono
AIMS/INTRODUCTION: A younger age at menarche is associated with obesity and type 2 diabetes in adult life. The impact of early onset menarche on obesity and glycemic control in type 2 diabetes has not been investigated. This study examined the relationship between age at menarche and obesity and glycemic control in type 2 diabetes. MATERIALS AND METHODS: A total of 2,133 patients with type 2 diabetes aged ≥20 years were divided into groups according to age at menarche (≤11 years, 12 years, 13 years, 14 years, and ≥15 years)...
March 25, 2018: Journal of Diabetes Investigation
https://www.readbyqxmd.com/read/29573011/is-age-of-menarche-among-school-girls-related-to-breastfeeding-during-infancy
#18
Radhia Al-Mathkoori, Ahmed Albatineh, Maryam Al-Shatti, Abdullah Al-Taiar
OBJECTIVES: Breastfeeding has been linked to various disease conditions in adulthood. Age of menarche has been proposed to be an intermediary factor on the life-course path to these disease conditions, but the link between breastfeeding and age of menarche remains under debate. This study aimed to investigate the association between age of menarche and breastfeeding during infancy. METHODS: A cross-sectional study was conducted in which 775 female high school students were randomly selected from private and public high schools in all provinces in Kuwait...
March 23, 2018: American Journal of Human Biology: the Official Journal of the Human Biology Council
https://www.readbyqxmd.com/read/29569713/adiposity-and-breast-cancer-risk-in-postmenopausal-women-results-from-the-uk-biobank-prospective-cohort
#19
Wenji Guo, Timothy J Key, Gillian K Reeves
Body size is an important modifiable risk factor for postmenopausal breast cancer. However, it remains unclear whether direct measures of fat mass are better indicators of risk than anthropometric measures, or whether central adiposity may contribute to risk beyond overall adiposity. We analyzed data from 162,691 postmenopausal women in UK Biobank followed from 2006-2014. Body size was measured by trained technicians. Multivariable-adjusted Cox regression was used to estimate relative risks. Analyses were stratified by age at recruitment, region, and socioeconomic status, and adjusted for family history of breast cancer, age at menarche, age at first birth, parity, age at menopause, previous hormone replacement therapy use, smoking, alcohol intake, height, physical activity, and ethnicity...
March 23, 2018: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/29558518/risk-factors-for-type-2-diabetes-mellitus-an-exposure-wide-umbrella-review-of-meta-analyses
#20
Vanesa Bellou, Lazaros Belbasis, Ioanna Tzoulaki, Evangelos Evangelou
BACKGROUND: Type 2 diabetes mellitus (T2DM) is a global epidemic associated with increased health expenditure, and low quality of life. Many non-genetic risk factors have been suggested, but their overall epidemiological credibility has not been assessed. METHODS: We searched PubMed to capture all meta-analyses and Mendelian randomization studies for risk factors of T2DM. For each association, we estimated the summary effect size, its 95% confidence and prediction interval, and the I2 metric...
2018: PloS One
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