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Bennet, A.M. et al.

Bennet, van Maarle, Hallqvist, Morgenstern, Frostegård, Wiman, Prince, de Faire,

Association of TNF-alpha serum levels and TNFA promoter polymorphisms with risk of myocardial infarction.

Elevated levels of tumor necrosis factor-alpha (TNF-alpha), and presence of polymorphisms of the TNFA gene have been implicated in cardiovascular disease pathogenesis. We explored the relationship between polymorphisms in the TNFA gene (-1031C/T, -863C/A -857T/C, -308G/A, -238G/A), protein levels of TNF-alpha and their association to myocardial infarction (MI) using a sample of 1213 post-MI patients and 1561 healthy controls. MI risk was higher among men with elevated TNF-alpha levels, with the highest compared to the lowest TNF-alpha quartile giving a 70% risk increase (OR [95% CI]: 1.7 [1.1; 2.6]). Obese subjects who also had elevated TNF-alpha levels were at even higher risk for MI (OR [95% CI]: 3.4 [2.1; 5.6]). Higher TNF-alpha levels were seen among smokers (but not among non-smokers) carrying the -857T allele. Furthermore, a rare haplotype occurred more frequently among the cases than the controls. Elevated TNF-alpha levels are associated with increased MI risk. Obese subjects with elevated TNF-a levels, and carriers of polymorphisms in or near TNFA are particularly susceptible to the hazards of smoking, results which may have implications for cardiovascular preventive measures.[1]

References

Association of TNF-alpha serum levels and TNFA promoter polymorphisms with risk of myocardial infarction. Bennet, A.M., van Maarle, M.C., Hallqvist, J., Morgenstern, R., Frostegård, J., Wiman, B., Prince, J.A., de Faire, U. Atherosclerosis (2006) [Pubmed]

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