PMID- 16901635 OWN - NLM STAT- MEDLINE DCOM- 20061103 LR - 20221207 IS - 0304-3940 (Print) IS - 0304-3940 (Linking) VI - 406 IP - 1-2 DP - 2006 Oct 2 TI - The 196G/A (val66met) polymorphism of the BDNF gene is significantly associated with binge eating behavior in women with bulimia nervosa or binge eating disorder. PG - 133-7 AB - The brain-derived neurotrophic factor (BDNF) is involved not only in promoting neuronal outgrowth and differentiation, synaptic connectivity and neuronal repair, but also in modulating eating behavior. Since genetic factors likely contribute to the biological vulnerability to bulimia nervosa (BN) and binge eating disorder (BED), we investigated whether the functional 196G/A single nucleotide polymorphism (SNP) of the BDNF gene was associated to BN and/or BED or to some phenotypic aspects of the disordered eating. Two hundred and ten Caucasian women (126 with BN, 84 with BED and 121 healthy controls) participated into the study. No significant differences were found in the frequencies of the 196G/A variants of the BDNF gene among patients with BN or BED and healthy controls. In both BN and BED groups, subjects carrying the 196A/A genotype exhibited a weekly frequency of bingeing and a severity of binge eating (as assessed by the Bulimia Investigation Test Edinburgh) significantly higher than those with the 196A/G and 196G/G genotypes. These results suggest that the 196G/A SNP of the human BDNF gene does not contribute to the genetic susceptibility to BN and BED, but may predispose those patients to a more severe binge eating behavior. FAU - Monteleone, Palmiero AU - Monteleone P AD - Department of Psychiatry, University of Naples SUN, Italy. monteri@tin.it FAU - Zanardini, Roberta AU - Zanardini R FAU - Tortorella, Alfonso AU - Tortorella A FAU - Gennarelli, Massimo AU - Gennarelli M FAU - Castaldo, Eloisa AU - Castaldo E FAU - Canestrelli, Benedetta AU - Canestrelli B FAU - Maj, Mario AU - Maj M LA - eng PT - Journal Article DEP - 20060809 PL - Ireland TA - Neurosci Lett JT - Neuroscience letters JID - 7600130 RN - 0 (Brain-Derived Neurotrophic Factor) RN - AE28F7PNPL (Methionine) RN - HG18B9YRS7 (Valine) SB - IM MH - Amino Acid Substitution/genetics MH - Brain/*metabolism/physiopathology MH - Brain Chemistry/genetics MH - Brain-Derived Neurotrophic Factor/*genetics MH - Bulimia Nervosa/*genetics/*metabolism/physiopathology MH - DNA Mutational Analysis MH - Female MH - Genetic Predisposition to Disease/*genetics MH - Genetic Testing MH - Genotype MH - Humans MH - Methionine/metabolism MH - Mutation/genetics MH - Polymorphism, Genetic/*genetics MH - Valine/metabolism MH - White People/genetics EDAT- 2006/08/12 09:00 MHDA- 2006/11/04 09:00 CRDT- 2006/08/12 09:00 PHST- 2006/06/08 00:00 [received] PHST- 2006/07/08 00:00 [revised] PHST- 2006/07/17 00:00 [accepted] PHST- 2006/08/12 09:00 [pubmed] PHST- 2006/11/04 09:00 [medline] PHST- 2006/08/12 09:00 [entrez] AID - S0304-3940(06)00738-5 [pii] AID - 10.1016/j.neulet.2006.07.040 [doi] PST - ppublish SO - Neurosci Lett. 2006 Oct 2;406(1-2):133-7. doi: 10.1016/j.neulet.2006.07.040. Epub 2006 Aug 9.