the polymorphism of the serotonin-2a receptor t102c is associated with age
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2008
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Abstract
Epidemiological investigations suggest that T102C polymorphism of gene 5-HT2A may be associated with mean life span because diseases and behaviors related to this polymorphism, such as schizophrenia, suicide, aggression, and addiction, may potentially shorten mean life span. A sample of 687 individuals without previous neuropsychiatric disease was genotyped and separated into 3 groups according to their gender and age: 14-45 years old, 46-64 years old and 65-100 years old. Molecular genotyping was performed using the technique of polymerase chain reaction followed by restriction fragment length polymorphism using HpaII restriction enzyme. 5-HT2A genotype frequencies were: TT = 21.5% (148), CC = 16.6% (114) and TC = 61.9% (425) and allele frequencies were T = 52.5% and C = 46.5%. Significant differences were found between mean age of the TT genotype carriers (60.27 ± 12.60 years) and TC genotype carriers (56.80 ± 13.18 years) of T102C polymorphism of gene 5-HT2A (P = 0.026) as well as the age groups (P = 0.012). Carriers of genotype TT were older than the other two genotypes, whereas carriers of genotype CC had an intermediate age compared with TT and CC subjects. The present results demonstrate an association between T102C polymorphism of gene 5-HT2A and age. Our results suggest that T102C polymorphism of gene 5-HT2A is associated with mean life span, and thus this gene becomes a possible candidate for the group of adaptive genes to meat consumption proposed in the literature. Further studies should be conducted in order to elucidate this association.
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| Authors | ;P.F.C. Jobim;P.A.S. Prado-Lima;C.H.A. Schwanke;R. Giugliani;I.B.M. Cruz |
| Journal | Free radical biology & medicine |
| Year | 2008 |
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