Title : CHRNA5-A3-B4 genetic variants alter nicotine intake and interact with tobacco use to influence body weight in Alaska Native tobacco users.

Pub. Date : 2013 Oct

PMID : 23692359






5 Functional Relationships(s)
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1 CHRNA5-A3-B4 genetic variants alter nicotine intake and interact with tobacco use to influence body weight in Alaska Native tobacco users. Nicotine cholinergic receptor nicotinic alpha 5 subunit Homo sapiens
2 We investigated CHRNA5-A3-B4 haplotype structure and its association with nicotine intake and obesity in Alaska Native people. Nicotine cholinergic receptor nicotinic alpha 5 subunit Homo sapiens
3 In 290 Alaska Native tobacco users the "G" allele of rs578776, which tagged a 30 kb haplotype in CHRNA5-A3-B4, was prevalent (16%) and associated significantly with nicotine intake (20% higher plasma cotinine, P < 0.001, 16% higher TNE, P = 0.076), while rs16969968 was not associated with nicotine intake. Nicotine cholinergic receptor nicotinic alpha 5 subunit Homo sapiens
4 In 290 Alaska Native tobacco users the "G" allele of rs578776, which tagged a 30 kb haplotype in CHRNA5-A3-B4, was prevalent (16%) and associated significantly with nicotine intake (20% higher plasma cotinine, P < 0.001, 16% higher TNE, P = 0.076), while rs16969968 was not associated with nicotine intake. Nicotine cholinergic receptor nicotinic alpha 5 subunit Homo sapiens
5 CONCLUSIONS: Genetic variants in CHRNA5-A3-B4 alter nicotine intake and body mass index in a population of Alaska Native people, who have a distinct haplotype structure, smoking behaviors and prevalence of obesity. Nicotine cholinergic receptor nicotinic alpha 5 subunit Homo sapiens