Navigation Links
Grandmother's cigarette habit could be the cause of grandchild's asthma
Date:3/4/2013

LOS ANGELES (March. 4, 2013) Grandmother's cigarette smoking could be responsible for her grandchild's asthma, and the recent discovery of this multi-generational transmission of disease suggests the environmental factors experienced today could determine the health of family members for generations to come, two Los Angeles Biomedical Research Institute (LA BioMed) lead researchers write in the March edition of Review of Obstetrics & Gynecology.

The researchers, John S. Torday, PhD, and Virender K. Rehan, MD, wrote an editorial citing recent studies by Dr. Rehan that found pregnant rats given nicotine produced asthmatic pups that went on to produce their own asthmatic pups, despite the absence of nicotine exposure in the third generation.

The findings suggest nicotine can leave heritable epigenetic marks on the genome, which make future offspring more susceptible to respiratory conditions.

The researchers also cited the Children's Health Study from Southern California, which reported that grandmaternal smoking during pregnancy increases the risk of asthma in grandchildren regardless of whether the mother smoked or not.

Based on those findings, the researchers conclude that environmental factors experienced during pregnancy will affect not only the child in utero but also future generations of the same family. They say this multi-generational transmission could explain why 98% of inherited human diseases are unaccounted for by the prevailing view of genetic trait transmission, known as Mendelian genetics.

The researchers concluded that the cause of the second generation's asthma was epigenetic modification (an environmental factor causing a genetic change). Nicotine was affecting both the lung cells and the sex cells in ways that caused the lungs that developed from those cells to develop abnormally, causing asthma.

"These studies break new ground in validating and further explaining the mechanisms involved in the transmission of epigenetic human diseases," Dr. Torday said. "The transmission of the asthma to the second generation and its prevention by a specifically-targeted molecular intervention are the first unequivocal demonstrations of multi-generational transmission of an epigenetically-mediated effect on the offspring."

Dr. Rehan, who has conducted multiple studies on nicotine's effects, noted that asthma rates are growing in the U.S. and around the world. World-wide, approximately 250,000,000 women smoke daily. Twelve percent of women in the U.S. continue to smoke during pregnancy, resulting in the birth of at least 400,000 smoke-exposed infants per year in the U.S. alone

"Asthma is the most common chronic disease of childhood, resulting in a significant impact on the lives of children and driving up medical costs for all," Dr. Rehan said. "While many factors contribute to asthma, smoking during pregnancy is a well-established one and one that can be avoided. Eliminating smoking during pregnancy would significantly reduce the prevalence of childhood asthma for this generation and for future generations."


'/>"/>

Contact: Laura Mecoy
lmecoy@labiomed.org
310-546-5860
Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center (LA BioMed)
Source:Eurekalert

Related medicine news :

1. One in Five U.S. Smokers Has Tried an E-Cigarette
2. UIC researchers to study how young adults use e-cigarettes, snus
3. Many Americans Back Nicotine Restrictions in Cigarettes: Survey
4. Pictures Speak Louder Than Words on Cigarette Labeling
5. Graphic warnings on cigarettes effective across demographic groups
6. Pricey Cigarettes, Strict Schools Help Curb Teen Smoking
7. Putting electronic cigarettes to the test
8. Heavy Smokers Cut Back the Most When Cigarette Taxes Rise: Study
9. Gruesome Cigarette Pack Images Sway Smokers, Study Finds
10. Pictures effective in warning against cigarette smoking
11. Researchers find why nicotine in cigarettes may relieve anxiety in smokers
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/25/2016)... ... June 25, 2016 , ... First Choice Emergency Room , the ... Ogunleye, as the Medical Director of its new Mesquite-Samuell Farm facility. , “We ... new Mesquite location,” said Dr. James M. Muzzarelli, Executive Medical Director of First Choice ...
(Date:6/25/2016)... ... , ... On Friday, June 10, Van Mitchell, Secretary of the Maryland Department ... in recognition of their exemplary accomplishments in worksite health promotion. , The Wellness at ... Wellness Symposium at the BWI Marriott in Linthicum Heights. iHire was one of 42 ...
(Date:6/24/2016)... ... , ... Those who have experienced traumatic events may suffer from a complex ... as drug or alcohol abuse, as a coping mechanism. To avoid this pain and ... a traumatic event. , Trauma sufferers tend to feel a range of emotions, from ...
(Date:6/24/2016)... ... June 24, 2016 , ... The Pulmonary Hypertension ... that it will receive two significant new grants to support its work to ... its 25th anniversary by recognizing patients, medical professionals and scientists for their work ...
(Date:6/24/2016)... ... June 24, 2016 , ... Comfort Keepers® of San Diego, CA is ... Road To Recovery® program to drive cancer patients to and from their cancer treatments. ... the highest quality of life and ongoing independence. Getting to and from medical ...
Breaking Medicine News(10 mins):
(Date:6/24/2016)... Mass. , June 24, 2016   Pulmatrix, ... pharmaceutical company developing innovative inhaled drugs, announced today that ... Russell Investments reconstituted its comprehensive set of ... "This is an important milestone for Pulmatrix," ... will increase shareholder awareness of our progress in developing ...
(Date:6/24/2016)... 24, 2016  Arkis BioSciences, a leading innovator ... more durable cerebrospinal fluid treatments, today announced it ... funding is led by Innova Memphis, followed by ... private investors.  Arkis, new financing will accelerate the ... market release of its in-licensed Endexo® technology. ...
(Date:6/23/2016)... June 23, 2016 Research and Markets ... Market - Forecast to 2022" report to their offering. ... method for the patients with kidney failure, it replaces the ... from the patient,s blood and thus the treatment helps to ... chloride in balance. Increasing number of ESRD ...
Breaking Medicine Technology: