Is Delayed Childbearing Changing Gene Frequencies in Western Populations?

Human Biology;  August 1, 2005 ;     700+ words ......1 diabetes. We reason that advanced maternal age may influence intrauterine selection...have investigated the relationship of maternal age to HP genotype and PGM1-Rh area (chromosome...the HP 2,2 phenotype increases with maternal age. The proportion of phenotypes carrying...

Trisomy accounted for 41% of miscarriages: chromosomal abnormalities...

OB GYN News;  September 1, 2004 ;     536 words ......British Columbia, Vancouver. Whereas maternal age is considered the leading risk factor...this fact that trisomy increases with maternal age, but we can't find a lot that's associated...improved detection rates and increasing maternal age likely plays a large role in the increase...

New blood test improves antenatal screening for Down's syndrome.(Research)

Reproductive Health Matters;  November 1, 2003 ;     285 words ......indicators can be used in assessing that risk; maternal age is a key determinant along with ultrasound...false positives. So, for example, if using maternal age alone is compared with using maternal age plus AFP/ HCG/uE3, the detection rate increases...

Maternal age and risk of fetal death in singleton gestations: USA,...

Journal of Maternal - Fetal & Neonatal Medicine;  March 1, 2004 ;     700+ words ......singleton pregnancies in relation to maternal age, and to compare the risks with other...small-for-gestational age (SGA). The association between maternal age and fetal deaths was derived after adjusting...32 weeks were seen with increasing maternal age. The RR for fetal death at ...

Midtrimester ultrasound for identifying risk of trisomy 21.(Tips from...

American Family Physician;  April 1, 1997 ;     337 words ...Although advanced maternal age is the foremost indication for genetic...syndrome below that based solely on maternal age and other forms of biometry. The...estimated in women with advanced maternal age. This information is useful in counseling...

Maternal Age Tied to Fetal Loss.

Family Practice News;  January 1, 2001 ;     183 words ......stillbirth rises steeply with increasing maternal age, regardless of the woman's reproductive...the risk of fetal loss according to maternal age at the time of conception followed a...miscarriage rose from a nadir of 8.7% at the maternal age of 22 to a peak of 84% at age 48 and...

The impact of maternal age, body mass index and maternal weight gain on...

Journal of Maternal - Fetal & Neonatal Medicine;  March 1, 2007 ;     700+ words ......this study was to determine whether maternal age, prepregnancy and mid-trimester body...multivariate logistic regression. Results. Maternal age and prepregnancy and mid-trimester BMI...maternal BMI of ≥30 kg/m^sup 2^ and maternal age ≥32 years are the optimal predictors...

Most birth defects don't rise with age. (age of mother)

Science News;  March 9, 1991 ;     407 words ......nonchromosomal birth defects increase with maternal age. The team, led by Patricia A. Baird...they say, provide reliable data on maternal age and defects observed at birth. In order...between birth defect rates and advancing maternal age. Of the 43 types of birth defects studied...

Fetal Loss Rises With Increasing Maternal Age.

OB GYN News;  September 15, 2000 ;     201 words ......stillbirth rises steeply with increasing maternal age, regardless of the woman's reproductive...The risk of fetal loss according to maternal age at the time of conception followed a...miscarriage rose from a nadir of 8.7% at the maternal age of 22 to a peak of 84% at age 48 and...

Screening for Down's syndrome study

Community Practitioner;  April 1, 2000 ;     340 words ......identify pregnancies at high risk was maternal age, but more recently biochemical markers...antenatal screening for Down's syndrome by maternal age and routine mid-pregnancy ultrasound...years. Screening was based primarily on maternal age, with amniocentesis offered to women...

Determinants of birth interval in a rural mediterranean population (La...

Human Biology;  October 1, 2000 ;     700+ words ......intervals depend on an exponential effect of maternal age, especially significant after the age...TRANSITION, INFANT MORTALITY, BIRTH ORDER, MATERNAL AGE, FAMILY SIZE, REPLACEMENT BEHAVIOR...al. 1994; Gray 1994; Ronsmans 1996), maternal age (Mineau and Trussell 1982; Goldman and...

Maternal age and risk of placenta previa. (Tips from Other Journals)

American Family Physician;  June 1, 1993 ;     205 words ......until 30 years of age or older. Older maternal age, among other factors, may be associated...study to determine whether advancing maternal age is an independent risk factor for placenta...This risk increased with advancing maternal age and was not limited to women older than...

INDICATIONS FOR FETAL KARYOTYPING - ANALYSIS OF 3916 CASES

Journal of Maternal - Fetal & Neonatal Medicine;  May 1, 2006 ;     352 words ......performed from 2000 to 2005. The mean maternal age was 35.4 years (St. Dev. 4.35 years...frequent karyotyping indications were maternal age >35 years (2832/3916, 72.32%), positive...59 trisomy 21 fetuses were increased maternal age (45.83%), increased nuchal fold in 2nd...

Trends in childbearing and stillbirth risk: Heterogeneity among Italian...

Human Biology;  April 1, 2002 ;     700+ words ......beginning of the 1980s by a decrease in maternal age at delivery. Since then, age at marriage...fertility rate (1.22) and of high mean maternal age at delivery (29.7). For the period between...identified five U-shaped patterns in maternal age at delivery corresponding to five ...

Rise in maternal age in Europe and increase in Down's syndrome.(ROUND UP:...

Reproductive Health Matters;  November 1, 2006 ;     211 words ...The rise in average maternal age in Europe has brought with it an increase in the number of pregnancies...and termination of pregnancy has counteracted the effect of maternal age in its effect on live birth prevalence of the syndrome. (1...