Navigation Links
Does the desire to consume alcohol and tobacco come from our genetic makeup?
Date:8/13/2007

Austin, TX Alcohol and smoking can be harmful, if not deadly. While the desire for these substances can be due to environmental cues, genomic factors also play an important role. The etiology of these desires is multifactorial and a result of complex interactions with the environment. Adoption and twin studies have shown that the use of these substances is likely to be inherited. Such studies have provided evidence that ones sex can influence the genetic factors for alcohol and tobacco use.

In an attempt to find the genomic determinants underlying alcohol and tobacco use, researchers examined 120 families (approximately 900 individuals). The researchers identified an area relating to alcohol and tobacco use on chromosome 1. They found another area relating to alcohol on chromosome 3. On chromosome 4, they uncovered an area relating to smoking and found sex-specific loci inside some of these areas.

The results are based on the study entitled, Genome-wide Scan for Genomic Determinants of Alcohol and Tobacco Use in French Canadian Families. It was conducted by Majid Nikpay, O. Seda, Johanne Tremblay and Pavel Hamet, of the Research Centre CHUM, University of Montreal; Ettore Merlo, cole Polytechnique de Montr al, Montral; D. Gaudet, Department of Medicine, University of Montreal Community Genomic Medicine Center and Lipid Clinic, Chicoutimi, CN; and Theodore Kotchen and Alan Cowley, of the Department of Physiology, Medical College of Wisconsin, Milwaukee. Mr. Nikpay will discuss his teams work at the conference, Sex and Gender in Cardiovascular-Renal Physiology and Pathophysiology. The meeting, sponsored by the American Physiological Society (APS; www.The-APS.org), is being held August 9-12, 2007 at the Hyatt Regency Austin on Town Lake, Austin, TX.

The Study

The researchers investigated the genomic factors underlying alcohol and tobacco use in a cohort of 120 families with at least one sibling pair was affected by hypertension (high blood pressure) and dyslipidemia (high lipids levels in the blood). (These variables were important because the excessive use of alcohol and tobacco may cause cardiovascular disorders like hypertension, so finding the genomic determinants behind alcohol and tobacco use may point to novel mechanisms for blood pressure modification by these substances.) The volunteers were from the Saguenay-Lac-St. Jean region of Quebec, Canada. The locale, which is relatively isolated, somewhat genetically homogenous, and has kept genealogical records of its citizens since the 17th-century, makes the study of complex genomic traits like these easier.

Phenotyping for alcohol and tobacco use was conducted using questionnaires. The researchers used a dense map (three haplotypes per cM; r2>0.4), generated by merging 58000 SNPs (single nucleotide polymorphisms) and 437 microsatellite markers, to identify sex-specific and non-specific linked and associated areas.

Summary of Results

The researchers reported the following results:

  • using the information from the questionnaires, the researchers found sex differences in prevalence of alcohol (17.3% in females and 38.3% in males) and tobacco (22.2% in females and 28% in males) use

  • a common locus (an identifiable location on a chromosome) for alcohol and tobacco was found on chromosome (chr) 1. Also on chr 1, in an area believed to be involved with diastolic blood pressure (DBP), they found a locus for smoking.

  • on chr 3, in the area identified as being involved with pre-math stress DBP, they found a locus for alcohol

  • on chr 4, inside gene GRID2, researchers found linked and associated SNPs for smoking moreover they found associated SNPs inside these gene for alcohol in males

  • female-specific candidate SNPs were found inside the HTR2C gene for smoking.

Conclusions

According to Mr. Nikpay, the lead author of the research, We have found evidence of linkage and association for several genomic regions harboring genes with potential pathophysiological functions relating to alcohol and smoking. Our sex specific findings may also play a role in the sex differences related to alcohol and tobacco use.


'/>"/>

Contact: Donna Krupa
DKrupa@The-APS.org
301-624-7209
American Physiological Society
Source:Eurekalert

Related biology news :

1. FDA Warns Consumers Not to Use Home-Use Diagnostic Kits Marketed by Globus Media
2. Controversial drug shown to act on brain protein to cut alcohol use
3. Alcohols effects on gene expression in the central nervous system
4. VCU Researchers Identify Networks Of Genes Responding To Alcohol In The Brain
5. Owl genomics presents a HEPATOCHIP for diagnosis of non-alcoholic steatohepatitis
6. Alcohol consumption disrupts breastfeeding hormones
7. Investigating brain shrinkage in alcoholics
8. Russian surrogate alcohols are a killer
9. Looking for the genes that affect a persons level of response to alcohol
10. Mapping alcohol brain damage
11. Alcoholism, smoking and genetics among Plains American Indians
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/6/2017)... March 6, 2017 Mintigo , ... today announced Predictive Sales Coach TM , its ... sales intelligence into Salesforce. This unique AI application ... sales organizations with deep knowledge of their customers ... intelligent engagement. Predictive Sales Coach extends Mintigo,s existing ...
(Date:3/2/2017)... 2, 2017 Who risk to be deprived ... the full report: https://www.reportbuyer.com/product/4313699/ WILL APPLE ... FIELD? Fingerprint sensors using capacitive technology represent a ... vendor Idex forecasts an increase of 360% of the ... of the fingerprint sensor market between 2014 and 2017 ...
(Date:2/28/2017)... --  Acuant , a leading provider of data capture ... new and core technologies building upon the acquisition of ... desktop Acuant FRM TM facial recognition and match ... manual review of identity documents by accredited professionals. ... most accurate capture software to streamline workflows by securely ...
Breaking Biology News(10 mins):
(Date:3/28/2017)... 28, 2017 Biostage, Inc. (Nasdaq: ... bioengineered organ implants to treat cancers and other life-threatening ... that Jim McGorry, CEO of Biostage, will ... panel at the MassBio 2017 Annual Meeting ... in Cambrige, Massachussetts. The 3D Printing and BioEngineering ...
(Date:3/28/2017)... March 28, 2017 Focus ... unpredictable sector due to the scientifically intensive operations ... medical, agricultural, environmental, and industrial. In today,s pre-market research, ... Pharmaceuticals Inc. (NASDAQ: PTLA), OvaScience Inc. (NASDAQ: OVAS), ... Inc. (NASDAQ: OCUL ). Learn more ...
(Date:3/28/2017)... (PRWEB) , ... March 28, 2017 , ... ... in the development of a new orally administered treatment for Alzheimer’s disease (AD), ... CEO John Didsbury states, “As we seek to uniquely treat the metabolic dysfunctions ...
(Date:3/27/2017)... (PRWEB) , ... March 27, 2017 , ... ... to accelerating the fight against cancer, autoimmune disease and more through a single-cell ... single-cell metabolomics and proteomics analysis platform developed in the laboratory of Dr. ...
Breaking Biology Technology: