Is Brain-Derived Neurotrophic Factor Associated With Smoking Initiation? Replication Using a Large Finnish Population Sample : Replication Using a Large Finnish Population Sample

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Korhonen , T , Loukola , A , Hällfors , J , Salomaa , M-M , Salomaa , V & Kaprio , J 2020 , ' Is Brain-Derived Neurotrophic Factor Associated With Smoking Initiation? Replication Using a Large Finnish Population Sample : Replication Using a Large Finnish Population Sample ' , Nicotine & Tobacco Research , vol. 22 , no. 2 , pp. 293-296 . https://doi.org/10.1093/ntr/nty218

Title: Is Brain-Derived Neurotrophic Factor Associated With Smoking Initiation? Replication Using a Large Finnish Population Sample : Replication Using a Large Finnish Population Sample
Author: Korhonen, Tellervo; Loukola, Anu; Hällfors, Jenni; Salomaa, Minna-Maija; Salomaa, Veikko; Kaprio, Jaakko
Contributor organization: Institute for Molecular Medicine Finland
Department of Public Health
University of Helsinki
HUSLAB
Operations Management Unit
Date: 2020-02-06
Language: eng
Number of pages: 4
Belongs to series: Nicotine & Tobacco Research
ISSN: 1462-2203
DOI: https://doi.org/10.1093/ntr/nty218
URI: http://hdl.handle.net/10138/321651
Abstract: Introduction: Brain-derived neurotrophic factor (BDNF) is a growth factor in the central nervous system. There is evidence for the involvement of BDNF in addictions and mental disorders. We aimed to replicate the earlier reported association of a functional genetic variant of BDNF with smoking initiation (SI) using a large population-based sample and to test whether the association is independent of depression. Methods: Our sample was drawn from the Finnish population-based FINRISK surveys conducted in 1992, 1997, 2002, and 2007. We had nonmissing data on the genotype BDNF Val66Met (G/A) variant (rs6265) and self-reported never (n = 10 619) versus ever (n = 16 028) smoking among 26 647 adults aged 25-74 years. The association between BDNF Val66Met and SI was modeled using logistic regression adjusted for age and sex, and in secondary analyses also for depression. Depression was defined as self-reported depression diagnosed or treated by physician during the past year. Results:The sex- and age-adjusted analysis confirmed that the major (Val) allele increased the risk of being a lifetime ever smoker (per allele odds ratio [OR] = 1.07; 95% CI = 1.01 to 1.12; p =.01). When depression, which itself was significantly associated with SI (OR = 1.58; 95% CI = 1.37 to 1.82; p Conclusions: In a Finnish population sample, we replicated the earlier reported association of BDNF Val66Met with SI. Our data further suggest that this association is independent of depression.
Subject: 3142 Public health care science, environmental and occupational health
FACTOR BDNF
DEPRESSION
BEHAVIOR
Peer reviewed: Yes
Usage restriction: openAccess
Self-archived version: acceptedVersion


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