Navigation Links
Penn study reveals genetics impact risk of early menopause among some female smokers
Date:2/5/2014

PHILADELPHA - New research is lighting up yet another reason for women to quit smoking. In a study published online in the journal Menopause, researchers from the Perelman School of Medicine at the University of Pennsylvania report the first evidence showing that smoking causes earlier signs of menopause in the case of heavy smokers, up to nine years earlier than average in white women with certain genetic variations.

Though previous studies have shown that smoking hastens menopause by approximately one to two years regardless of race or genetic background, this study is the first of its kind to demonstrate that genetic background is significantly associated with a further increased risk of menopause in some white women who smoke. No statistically significant relationships between smoking, the gene variants under investigation and earlier menopause were observed in African American women.

While symptoms of menopause such as hot flashes, anxiety and insomnia can result in discomfort, embarrassment, and irritability, the onset of menopause is also associated with risks of coronary artery disease, osteoporosis, and death from all causes. On average, women enter menopause at around 50 years of age. However, the research team now reports that menopause may begin at an earlier age in white female smokers who are carriers of two different gene variants. While the genes themselves do not result in early onset menopause, variations of the genes CYP3A4*1B and CYP1B1*3 were found to increase the risk of entering menopause at an earlier age in white smokers. The genetic variants were present in seven and 62 percent of white women in the study population, respectively.

"This study could shed new light on how we think about the reproductive risks of smoking in women. We already know that smoking causes early menopause in women of all races, but these new results show that if you are a white smoker with these specific genetic variants, your risk of entering menopause at any given time increases dramatically," said the study's lead author Samantha F. Butts, MD, MSCE, assistant professor of Obstetrics and Gynecology at Penn Medicine.

Results of the study, which enrolled over 400 women aged 35 to 47 from the Penn Ovarian Aging Study, found that in carriers of the CYP3A4*1B variation, the average time-to-menopause after entering the study in heavy smokers, light smokers, and nonsmokers was 5.09 years, 11.36 years, and 13.91 years, respectively. This means that for heavily smoking white females with this genetic background, the average time-to-menopause was approximately nine years earlier than in nonsmoking carriers.

In white carriers of the CYP1B1*3 variation, the average time-to-menopause in heavy smokers, light smokers, and nonsmokers was 10.41 years, 10.42 years, and 11.08 years, respectively -- a statistically significant difference although not as stark as the findings for the CYP3A4*1B variant.

The Penn study did not examine why no statistically significant relationships between smoking, the gene variants under investigation, and earlier menopause were observed in African Americans.

"It is possible that uniform relationships among white and African American women were not found due to other factors associated with race that modify the interaction between smoking and genes," said Butts. "It is well known that race affects multiple features of menopause, and this could be another. Further investigation is needed to clarify this question."


'/>"/>

Contact: Katie Delach
katie.delach@uphs.upenn.edu
215-349-5964
University of Pennsylvania School of Medicine
Source:Eurekalert

Related medicine news :

1. Study Suggests Vaccine May Help Kids With Brain Cancer
2. Study reveals how cancer drug causes diabetic-like state
3. Coffee Drinking in Pregnancy Wont Lead to Sleepless Baby: Study
4. Lower GI problems plague many with rheumatoid arthritis, Mayo Clinic study finds
5. Veggies Like Broccoli, Cabbage May Help Fight Breast Cancer: Study
6. No Added Cancer Risk From Hip Replacement Materials: Study
7. Reported Decline in U.S. Pneumonia Deaths May Be False: Study
8. Early Study Finds Some Promise for Lung Cancer Vaccine
9. Narcissists Often Ace Job Interviews, Study Finds
10. Sexual objectification of female artists in music videos exists regardless of race, MU study finds
11. Soy may alleviate hot flashes in menopause, large-scale study finds
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/2/2016)... ... December 02, 2016 , ... ‘Tis the season for giving! Today, 20 creative ... National Family Partnership and the Drug Enforcement Administration as part of the National Red ... 10 winning schools who decorated their campuses with this year’s Red Ribbon Week theme: ...
(Date:11/30/2016)... , ... November 30, 2016 , ... ... they now offer a comprehensive in-house dental plan for all patients. Understanding that ... a plan that gives patients a number of perks, including discounts on many ...
(Date:11/30/2016)... ... November 30, 2016 , ... ... Deloitte Wisconsin 75, an annual ranking and recognition of the largest closely held ... list, having ranked from 2008-2016. In addition, Standard Process was awarded the Talent ...
(Date:11/30/2016)... ... November 30, 2016 , ... Center For ... announced the opening of a new residential mental health treatment program in Chino ... issues such as severe anxiety, depression, bi-polar disorder, and other related issues. , ...
(Date:11/30/2016)... ... November 30, 2016 , ... ... and stylish design wanted by today’s consumers at an affordable price, is now ... says the new watch is “a game changer” when it comes to the ...
Breaking Medicine News(10 mins):
(Date:12/2/2016)... bioLytical Laboratories, ein Weltführer bei schnellen Tests für ... Apothekenbundes von Kenia eingeführt. Continue Reading ... ... Test! (PRNewsFoto/bioLytical Laboratories) ... http://photos.prnewswire.com/prnh/20161201/444905 ) bioLytical wurde durch die ...
(Date:12/2/2016)... , December 2, 2016 Orthopedic Implants ... Support) is Expected to Gain a Significant Market Share Owing ... Ailments  ... According to a new ... Medical Implants Sterile Packaging: Clamshell Product Type Segment Projected to ...
(Date:12/2/2016)... December 2, 2016 On Thursday, the ... in red, while the Dow Jones Industrial Average managed to ... of US markets, which prompted Stock-callers this morning to look ... (NASDAQ: NUVA ), Smith & Nephew PLC (NYSE: ... NXTM ), and Cesca Therapeutics Inc. (NASDAQ: KOOL ...
Breaking Medicine Technology: