Featured Research

from universities, journals, and other organizations

Dad's alcohol consumption before conception could influence sons' drinking

Date:
June 4, 2014
Source:
University of Pittsburgh Schools of the Health Sciences
Summary:
Even before conception, a son's vulnerability for alcohol use disorders could be shaped by a father who chronically drinks to excess, according to a new study. The findings show male mice that were chronically exposed to alcohol before breeding had male offspring that were less likely to consume alcohol and more sensitive to its effects, providing new insight into inheritance and development of drinking behaviors.

Even before conception, a son's vulnerability for alcohol use disorders could be shaped by a father who chronically drinks to excess, according to a new animal study from the University of Pittsburgh School of Medicine. The findings, published online Wednesday in PLOS ONE, show male mice that were chronically exposed to alcohol before breeding had male offspring that were less likely to consume alcohol and were more sensitive to its effects, providing new insight into inheritance and development of drinking behaviors.

Previous human studies indicate that alcoholism can run in families, particularly father to son, but to date only a few gene variants have been associated with Alcohol Use Disorder and they account for only a small fraction of the risk of inheriting the problem, said senior investigator Gregg E. Homanics, Ph.D., professor of anesthesiology and pharmacology & chemical biology, Pitt School of Medicine.

"We examined whether a father's exposure to alcohol could alter expression of the genes he passed down to his children," Dr. Homanics said. "Rather than mutation of the genetic sequence, environmental factors might lead to changes that modify the activity of a gene, which is called epigenetics. Our mouse study shows that it is possible for alcohol to modify the dad's otherwise normal genes and influence consumption in his sons, but surprisingly not his daughters."

In the study, he and lead author Andrey Finegersh, M.D./Ph.D. student in the Department of Pharmacology & Chemical Biology graduate program, chronically exposed male mice over five weeks to intermittent ethanol vapor, leading to blood alcohol levels slightly higher than the legal limit for human drivers. Then, they mated them to females who had not been exposed to alcohol.

Compared to those of ethanol-free sires, adult male offspring of ethanol-exposed mice consumed less alcohol when it was made available and were less likely to choose to drink it over water. Also, they were more susceptible to alcohol effects on motor control and reduction of anxiety.

"We suspected that the offspring of alcohol exposed sires would have an enhanced taste for alcohol, which seems to be the pattern for humans," Mr. Finegersh said. "Whether the unexpected reduction in alcohol drinking that was observed is due to differences between species or the specific drinking model that was tested is unclear."

The researchers plan to examine other drinking models such as binge drinking, identify how alcohol modifies the genes, and explore why female offspring appear unaffected.

The project was funded by grants AA10422 and AA021632 from the National Institute on Alcohol Abuse and Alcoholism, part of the National Institutes of Health.


Story Source:

The above story is based on materials provided by University of Pittsburgh Schools of the Health Sciences. Note: Materials may be edited for content and length.


Journal Reference:

  1. Andrey Finegersh, Gregg E. Homanics. Paternal Alcohol Exposure Reduces Alcohol Drinking and Increases Behavioral Sensitivity to Alcohol Selectively in Male Offspring. PLoS ONE, 2014; 9 (6): e99078 DOI: 10.1371/journal.pone.0099078

Cite This Page:

University of Pittsburgh Schools of the Health Sciences. "Dad's alcohol consumption before conception could influence sons' drinking." ScienceDaily. ScienceDaily, 4 June 2014. <www.sciencedaily.com/releases/2014/06/140604203151.htm>.
University of Pittsburgh Schools of the Health Sciences. (2014, June 4). Dad's alcohol consumption before conception could influence sons' drinking. ScienceDaily. Retrieved September 2, 2014 from www.sciencedaily.com/releases/2014/06/140604203151.htm
University of Pittsburgh Schools of the Health Sciences. "Dad's alcohol consumption before conception could influence sons' drinking." ScienceDaily. www.sciencedaily.com/releases/2014/06/140604203151.htm (accessed September 2, 2014).

Share This




More Mind & Brain News

Tuesday, September 2, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Can You Train Your Brain To Eat Healthy?

Can You Train Your Brain To Eat Healthy?

Newsy (Sep. 1, 2014) — New research says if you condition yourself to eat healthy foods, eventually you'll crave them instead of junk food. Video provided by Newsy
Powered by NewsLook.com
Coffee Then Napping: The (New) Key To Alertness

Coffee Then Napping: The (New) Key To Alertness

Newsy (Aug. 30, 2014) — Researchers say having a cup of coffee then taking a nap is more effective than a nap or coffee alone. Video provided by Newsy
Powered by NewsLook.com
Young Entrepreneurs Get $100,000, If They Quit School

Young Entrepreneurs Get $100,000, If They Quit School

AFP (Aug. 29, 2014) — Twenty college-age students are getting 100,000 dollars from a Silicon Valley leader and a chance to live in San Francisco in order to work on the start-up project of their dreams, but they have to quit school first. Duration: 02:20 Video provided by AFP
Powered by NewsLook.com
Baby Babbling Might Lead To Faster Language Development

Baby Babbling Might Lead To Faster Language Development

Newsy (Aug. 29, 2014) — A new study suggests babies develop language skills more quickly if their parents imitate the babies' sounds and expressions and talk to them often. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins