Genetic Epidemiology, Translational Neurogenomics, Psychiatric Genetics and Statistical Genetics Laboratories investigate the pattern of disease in families, particularly identical and non-identical twins, to assess the relative importance of genes and environment in a variety of important health problems.
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PMID
16277631
TITLE
Correlates of regular cigarette smoking in a population-based sample of Australian twins.
ABSTRACT
AIMS NlmCategory: OBJECTIVE
To investigate the role of measured risk factors and the influence of genetic and environmental factors on regular cigarette smoking. Design Members of monozygotic and dizygotic, including unlike-sex twin pairs (n = 6257) from a young adult cohort from the Australian Twin Registry.
METHODS NlmCategory: METHODS
Cox proportional hazards models were used to determine whether putative risk factors were significantly associated with regular cigarette smoking. Risk factors were classified into four tiers: tier 1 (parental history, including parental education, alcoholism and cigarette smoking), tier 2 (early home and family influences), tier 3 (early life events, e.g. trauma) and tier 4 (psychiatric symptoms/disorders with onset prior to 14 years), after controlling for gender, zygosity and their interactions. Genetic models were fitted to examine the heritability of smoking behavior before and after controlling for significant covariates from the four tiers.
FINDINGS NlmCategory: RESULTS
Parental history of cigarette smoking and alcoholism, parental closeness and home environment, as well as incidence of childhood sexual abuse or other trauma, a history of early onset panic attacks and conduct problems were associated with regular cigarette smoking. Important age interactions were found, particularly for family background risk factors. Regular cigarette smoking was moderately heritable, even after accounting for significant covariates.
CONCLUSIONS NlmCategory: CONCLUSIONS
Several measured risk factors are associated with regular smoking. While some of the genetic influences on regular smoking may be shared with these risk factors, a significant proportion of the genetic vulnerability to regular smoking is phenotype-specific.
DATE PUBLISHED
2005 Nov
HISTORY
PUBSTATUS PUBSTATUSDATE
pubmed 2005/11/10 09:00
medline 2006/04/11 09:00
entrez 2005/11/10 09:00
AUTHORS
NAME COLLECTIVENAME LASTNAME FORENAME INITIALS AFFILIATION AFFILIATIONINFO
Agrawal A Agrawal Arpana A Washington University School of Medicine, St Louis, MO 63108, USA. arpana@matlock.wustl.edu
Madden PA Madden Pamela A F PA
Heath AC Heath Andrew C AC
Lynskey MT Lynskey Michael T MT
Bucholz KK Bucholz Kathleen K KK
Martin NG Martin Nicholas G NG
INVESTIGATORS
JOURNAL
VOLUME: 100
ISSUE: 11
TITLE: Addiction (Abingdon, England)
ISOABBREVIATION: Addiction
YEAR: 2005
MONTH: Nov
DAY:
MEDLINEDATE:
SEASON:
CITEDMEDIUM: Print
ISSN: 0965-2140
ISSNTYPE: Print
MEDLINE JOURNAL
MEDLINETA: Addiction
COUNTRY: England
ISSNLINKING: 0965-2140
NLMUNIQUEID: 9304118
PUBLICATION TYPE
PUBLICATIONTYPE TEXT
Journal Article
Research Support, N.I.H., Extramural
Twin Study
COMMENTS AND CORRECTIONS
GRANTS
GRANTID AGENCY COUNTRY
AA07728 NIAAA NIH HHS United States
AA13221 NIAAA NIH HHS United States
DA12854 NIDA NIH HHS United States
GENERAL NOTE
KEYWORDS
MESH HEADINGS
DESCRIPTORNAME QUALIFIERNAME
Adolescent
Adult
Age of Onset
Alcoholism genetics
Australia epidemiology
Educational Status epidemiology
Epidemiologic Methods epidemiology
Family Health epidemiology
Family Relations epidemiology
Female epidemiology
Humans epidemiology
Male epidemiology
Mental Disorders psychology
Models, Genetic psychology
Smoking genetics
Twins psychology
SUPPLEMENTARY MESH
GENE SYMBOLS
CHEMICALS
OTHER ID's