Navigation Links
War between the sexes begins before twins' birth, TAU researchers say
Date:4/7/2008

The battle of the sexes may begin in the womb, researchers from Tel Aviv University believe. And it may have troubling consequences a male twin can compromise the health of his twin sister before she is born.

In a new study recently published in the journal Pediatrics, the researchers analyzed the incidence of complications, such as respiratory distress syndrome, found in pre-term twins. When born premature, girls who share the womb with a boy twin lost the respiratory health advantage normally seen in premature girl infants, they discovered.

The male disadvantage, the study suggests, seems to be transferred from the boy to the girl in utero, says Prof. Brian Reichman, a lecturer in pediatrics at Tel Aviv Universitys Sackler School of Medicine.

Girl Twins Lose Their Advantage

Compared to premature twin boys, premature twin girls had a 60 percent advantage. The premature twin girls tended not to develop respiratory distress syndrome and chronic lung diseases sometimes found in premature infants. This advantage was lost in infant girls with a male twin.

This new study is expected to help pediatricians better understand the health risks and outcome of premature babies.

Prof. Reichman helped analyze the data collected by the Israel Neonatal Network comprising 8,858 very low birth weight infants ( 1 to 3 pounds) born prematurely at 24 to 34 weeks' gestation. The study data covered infants born between 1995 and 2003 and included singletons, same-sex and mixed-sex pre-term twins.

Beginning in the Womb

The TAU study is somewhat unusual. Twin studies tend to focus on what happens after birth, when complicated environmental and learned behavioral factors come into play. The effects are occurring already in the uterus, says Prof. Reichman, citing studies showing that females with male twins may be more masculinized later in life.

A Pediatrics commentary on the research, Beware of the Weaker Sex: Don't Get Too Close to Your Twin Brother, by Dr. David K. Stevenson, Department of Pediatrics, Stanford University; and Dr. Jon E. Tyson, Department of Pediatrics, University of Texas Medical School, sums up the findings. For the time being, there remains some biological truth to the old nursery rhyme that boys are made of snakes, snails and puppy dogs tails, and girls are made of sugar and spice and everything nice.

Perhaps nature knows something we do not, Drs. Stevenson and Tyson write.


'/>"/>

Contact: George Hunka
ghunka@aftau.org
212-742-9070
American Friends of Tel Aviv University
Source:Eurekalert

Related biology news :

1. Study shows link between alcohol consumption and hiv disease progression
2. St. Jude influenza survey uncovers key differences between bird flu and human flu
3. Hidden interactions between predators and prey: evolution causes cryptic dynamics in ecology
4. Groundbreaking Canada-US study proves link between emissions and mercury pollution in fish
5. Research explains link between cholesterol and heart disease
6. Groundbreaking Canada-US study proves link between emissions and mercury pollution in fish
7. Weight gain between first and second pregnancies associated with increased odds of male second child
8. Evidence of a relationship between swimming babies and infections
9. Of mice and men: similarities between skeletons of both
10. Analysis of breast and colon cancer genes finds many areas of differences between tumors
11. Fossilized cashew nuts reveal Europe was important route between Africa and South America
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/10/2016)... , February 10, 2016 ... According to 2016 iris recognition market ... iris recognition is more widely accepted for ... with both fingerprint and iris recognition technology ... user to avoid purchasing two individual biometrics ...
(Date:2/9/2016)... AWRE ), a leading supplier of biometrics software and services, ... December 31, 2015.  --> --> ... an increase of 61% compared to $4.3 million in the same ... was $2.6 million compared to $0.2 million in the fourth quarter ... Higher revenue and operating income in the fourth quarter of this ...
(Date:2/9/2016)... -- Vigilant Solutions announces today that an agency used its ... lead in a difficult homicide case. The agency then used ... suspect vehicle. Due to the ongoing investigation, the agency name ... the agency,s request. --> --> ... found deceased at an intersection here in the City. He ...
Breaking Biology News(10 mins):
(Date:2/10/2016)... ... February 09, 2016 , ... Creation Technologies, leading global ... Highest Overall Customer Rating Award from Circuits Assembly , today announced its milestone ... USA, Canada, Mexico and China. , The EMS provider, known in the EMS ...
(Date:2/9/2016)... ... February 09, 2016 , ... With a presidential election in November and the ... will bring together over 500 top healthcare leaders for a night and day of ... organized by MBA students of the University of Pennsylvania’s Wharton School, will be held ...
(Date:2/9/2016)... LITTLE FALLS, N.J. , Feb. 9, 2016 ... ), a biotechnology company specializing in the development ... the health of damaged tissues and organs, recently ... milestones for the first quarter of 2016. ... Regenicin began the new 2015 fiscal year in ...
(Date:2/9/2016)... ... February 08, 2016 , ... ... Location: Baruch S. Blumberg Institute at the Pennsylvania Biotechnology Center of Bucks County, ... and The Commonwealth Medical College (TCMC) will hold an open house for participants ...
Breaking Biology Technology: