HOME >> BIOLOGY >> NEWS
Women pregnant with girls experience more severe asthma symptoms

Women with asthma who are carrying a female fetus are more likely to experience worse asthma symptoms than asthmatic women carrying a male fetus, researchers at Yale School of Medicine report in the February issue of American Journal of Epidemiology.

"This is one of the first and largest studies to investigate the effect of fetal sex on the severity of the mother's asthma, and one of the largest to investigate the effect of fetal sex on any disease of the mother," said senior author Michael B. Bracken, Susan Dwight Bliss Professor of Epidemiology in the Department of Epidemiology and Public Health at Yale School of Medicine.

The researchers monitored 702 pregnant women throughout southern New England who were trained to assess their lung function for 10-day intervals at selected points in pregnancy. Lung function and a large number of other factors that might influence severity of the mother's asthma were recorded automatically.

Asthma worsened in mothers with either male or female fetuses until about 30 weeks gestation, after which there was an improvement in lung function. However, throughout pregnancy, mothers with a male fetus had 10 percent better lung function.

"This difference due to sex is potentially important but needs to be placed in the context of other factors which have a greater impact on the severity of mother's asthma, including inadequate medical management of asthma symptoms, and whether the mother was a smoker or not," said Bracken, who also co-directs the Yale Center for Perinatal, Pediatric and Environmental Epidemiology.

The authors speculate that testosterone, secreted by the male fetuses, may relax the mother's bronchial tissue and inhibit response to histamines. Other sex-specific factors excreted by female fetuses may aggravate inflammation in mothers. Bracken said more research is needed to test these hypotheses.

Asthma is one of the most common diseases associated with pregnancy. An up
'"/>

Contact: Karen N. Peart
karen.peart@yale.edu
203-432-1326
Yale University
2-Feb-2006


Page: 1 2

Related biology news :

1. Women up to age 30 at risk for bone loss, study finds
2. MBL scientist Julie Huber receives 2007 LOral USA Fellowship for Women in Science
3. Brandeis and Brigham and Womens Hospital license technology for Gauchers to Amicus Therapeutics
4. Women in polluted areas at higher risk of cardiovascular disease
5. Womens skin tone influences perception of beauty, health and age
6. Womens math performance affected by theories on sex differences: UBC researchers
7. Womens Bioethics Project unveils The Scientist & the Ethicist podcast series
8. Weizmann Women & Science Award presented to Dr. Mary-Claire King
9. Mary-Claire King to receive the 2006 Weizmann Women & Science Award
10. Womens health findings presented at national conference
11. Womens bioethics project receives grant from Ford Foundation

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Women pregnant with girls experience more severe asthma symptoms

(Date:7/27/2015)...   Zynx Health ™, the market leader ... today announced that its ZynxCarebook ™ mobile ... smartphones and tablets. With this expansion, care team ... ZynxCarebook to securely exchange messages and share assessments ... to other care settings, and improve clinical outcomes ...
(Date:7/23/2015)... 23, 2015 Research and Markets ( ... "Global Outlook of the Biometrics Industry 2015 ... The global biometrics market is likely to ... applications owing to the uptake of multiple technologies ... that enhances the growth of biometrics in existing ...
(Date:7/21/2015)... 2015  NXT-ID, Inc. (NASDAQ: NXTD ) ... focused on the growing mobile commerce market and ... it has filed provisional patent 62/192218 for ... This invention highlights next generation payment technology ... but also the user using unique personal identifiers ...
Breaking Biology News(10 mins):Zynx Health Adds Android Device Support to ZynxCarebook Solution 2Zynx Health Adds Android Device Support to ZynxCarebook Solution 3Global Outlook of the Biometrics Industry 2015 2Global Outlook of the Biometrics Industry 2015 3NXT-ID Patents Personalized Tokenized Payments for Next Generation Secure Payment Technology 2NXT-ID Patents Personalized Tokenized Payments for Next Generation Secure Payment Technology 3NXT-ID Patents Personalized Tokenized Payments for Next Generation Secure Payment Technology 4
(Date:7/29/2015)... CER / 20% of sales) led the regional performance in the second quarter ... as solid contributions from Korea, India and ... / Africa (Q2 2015: +3% CER / ... Turkey and the United Kingdom . The Americas ... sales, on demand across all customer classes. The top seven emerging markets (Q2 ...
(Date:7/29/2015)... - BioAmber Inc. (NYSE: BIOA ) today announced that ... has resigned.  The Company has hired Andrew Ashworth ... December 2014, as full time interim CFO and has ... Andy Ashworth began his employment today, to ... Andy was the Company,s CFO from September 2011 to ...
(Date:7/29/2015)... July 29, 2015  HealthSouth Corporation (NYSE: ... providers of post-acute healthcare services, offering both facility-based ... of operations for the second quarter ended June 30, ... characterized by strong volume growth in both segments ... said Jay Grinney, President and Chief Executive Officer ...
(Date:7/29/2015)... , July 29, 2015  AsureQuality and ... molecular testing for applications in food and primary ... battery powered real-time PCR device, the Freedom4. ... right through to the supermarket shelf for producers, ... includes involvement in animal disease control and pest ...
Breaking Biology Technology:QIAGEN Reports Results for Second Quarter and First Half of 2015 2QIAGEN Reports Results for Second Quarter and First Half of 2015 3QIAGEN Reports Results for Second Quarter and First Half of 2015 4QIAGEN Reports Results for Second Quarter and First Half of 2015 5QIAGEN Reports Results for Second Quarter and First Half of 2015 6QIAGEN Reports Results for Second Quarter and First Half of 2015 7QIAGEN Reports Results for Second Quarter and First Half of 2015 8QIAGEN Reports Results for Second Quarter and First Half of 2015 9QIAGEN Reports Results for Second Quarter and First Half of 2015 10BioAmber Announces Change in Chief Financial Officer 2BioAmber Announces Change in Chief Financial Officer 3HealthSouth Reports Results for Second Quarter 2015 2HealthSouth Reports Results for Second Quarter 2015 3HealthSouth Reports Results for Second Quarter 2015 4HealthSouth Reports Results for Second Quarter 2015 5HealthSouth Reports Results for Second Quarter 2015 6HealthSouth Reports Results for Second Quarter 2015 7HealthSouth Reports Results for Second Quarter 2015 8HealthSouth Reports Results for Second Quarter 2015 9HealthSouth Reports Results for Second Quarter 2015 10HealthSouth Reports Results for Second Quarter 2015 11HealthSouth Reports Results for Second Quarter 2015 12HealthSouth Reports Results for Second Quarter 2015 13HealthSouth Reports Results for Second Quarter 2015 14HealthSouth Reports Results for Second Quarter 2015 15HealthSouth Reports Results for Second Quarter 2015 16HealthSouth Reports Results for Second Quarter 2015 17HealthSouth Reports Results for Second Quarter 2015 18HealthSouth Reports Results for Second Quarter 2015 19HealthSouth Reports Results for Second Quarter 2015 20HealthSouth Reports Results for Second Quarter 2015 21HealthSouth Reports Results for Second Quarter 2015 22HealthSouth Reports Results for Second Quarter 2015 23HealthSouth Reports Results for Second Quarter 2015 24HealthSouth Reports Results for Second Quarter 2015 25
Cached News: