نتایج جستجو برای: maternal age

تعداد نتایج: 837061  

Journal: :PLoS Genetics 2008
Tiffany Renee Oliver Eleanor Feingold Kai Yu Vivian Cheung Stuart Tinker Maneesha Yadav-Shah Nirupama Masse Stephanie L. Sherman

Nondisjunction of chromosome 21 is the leading cause of Down syndrome. Two risk factors for maternal nondisjunction of chromosome 21 are increased maternal age and altered recombination. In order to provide further insight on mechanisms underlying nondisjunction, we examined the association between these two well established risk factors for chromosome 21 nondisjunction. In our approach, short ...

Journal: :تولیدات دامی 0
فاطمه جعفری دانشجوی کارشناسی ارشد، گروه علوم دامی، دانشکدۀ علوم دامی و صنایع غذایی، دانشگاه کشاورزی و منابع طبیعی رامین، رامین، خوزستان ـ ایران محمد تقی بیگی نصیری استاد، گروه علوم دامی، دانشکدۀ علوم دامی و صنایع غذایی، دانشگاه کشاورزی و منابع طبیعی رامین، رامین، خوزستان ـ ایران جمال فیاضی دانشیار، گروه علوم دامی، دانشکدۀ علوم دامی و صنایع غذایی، دانشگاه کشاورزی و منابع طبیعی رامین، رامین، خوزستان ـ ایران محمد علی لغوی کارشناسی ارشد، بخش امور دام، سازمان جهاد کشاورزی استان فارس، شیرازـ ایران

genetic parameters direct and maternal in fars native flows using the bayesian statistical approach, was estimation with consider body weight at a day of age (bw1), body weight at eight weeks of age (bw8), body weight at 12 weeks of age (bw12), age at sexual maturity (asm), egg number (egp) and mean egg weight during 28th, 30th and 32nd week ages (av283032) fars native flows. genetic parameters...

Journal: :Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology 2013
A Khalil A Syngelaki N Maiz Y Zinevich K H Nicolaides

OBJECTIVE To examine the association between maternal age and a wide range of adverse pregnancy outcomes after adjustment for confounding factors in obstetric history and maternal characteristics. METHODS This was a retrospective study in women with singleton pregnancies attending the first routine hospital visit at 11 + 0 to 13 + 6 weeks' gestation. Data on maternal characteristics, and medi...

2013
Saifon Chawanpaiboon Pattaya Hengrasmee

Objective: To study the adverse outcome in pregnant women ≤ 16 and ≥ 40 years. Study Design: A total of 1100 cases, 1061 cases of pregnant women ≤ 16 years, 20 29 and ≥ 40 years with completed charts between 1st January, 2006 to 31st December, 2010, were enrolled in this study. The patient data includeing demographic data, hospital course, maternal laboratory investigations, maternal complicati...

2017
Jude S. Morton Alison S. Care Raven Kirschenman Christy-Lynn Cooke Sandra T. Davidge

The age at which women experience their first pregnancy has increased throughout the decades. Pregnancy has an important influence on maternal short- and long-term cardiovascular outcomes. Pregnancy at an advanced maternal age increases maternal risk of gestational diabetes, preeclampsia, placenta previa and caesarian delivery; complications which predict worsened cardiovascular health in later...

2015
Reeta Lamminpää REETA LAMMINPÄÄ Veli-Matti Kosma Katri Vehviläinen-Julkunen

Maternal age of 35 years and over has increased in Western countries as well as in Finland during the last decades. The purpose of this retrospective register-based study was to explore the risks and complications related to pregnancy and birth of women aged 35 years or older, when comparing them to younger women aged less than 35 years old. Pregnancy outcomes and complications were observed in...

1987
S.K. Subbegowda H.S. Narayanan T.S. Padmashree B.S. Sridhara Rama Rao

Details of clinical, genetic and karyotyping investigations carried out on thirty patients with Down's syndrome are described. All the patients showed Trisomy - 21,The information relating to the maternal age revealed that women in the age group of 15-35 also had cases of Down's syndrome which is in contrast to the findings made in western countries.

Journal: :Cell 2005
William D. Gilliland R. Scott Hawley

During meiosis in human oocytes, chromosome nondisjunction increases with maternal age, leading to disorders such as Down's syndrome. In a recent study in Nature Genetics, Hodges et al. (2005) show that mice with a mutation in the meiosis-specific cohesin protein SMC1beta exhibit age-dependent defects in meiosis. These defects are similar to those observed in oocytes of older human mothers. The...

Journal: :Obstetrics and gynecology 2004
Bo Jacobsson Lars Ladfors Ian Milsom

OBJECTIVE The aim of this study was to investigate the influence of maternal age on perinatal and obstetric outcome in women aged 40-44 years and those 45 years or older and to estimate whether adverse outcome was related to intercurrent illness and pregnancy complications. METHODS National prospective, population-based, cohort study in women aged 40-44 years and those 45 years or older and i...

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