PMID- 18408624 OWN - NLM STAT- MEDLINE DCOM- 20080813 LR - 20221207 IS - 1744-6872 (Print) IS - 1744-6872 (Linking) VI - 18 IP - 6 DP - 2008 Jun TI - BDNF gene is a genetic risk factor for schizophrenia and is related to the chlorpromazine-induced extrapyramidal syndrome in the Chinese population. PG - 449-57 LID - 10.1097/FPC.0b013e3282f85e26 [doi] AB - BACKGROUND: Brain-derived neurotrophic factor (BDNF) belongs to a family of the neurotrophin, which plays important roles in the neurodevelopment of dopaminergic-related systems and interacts with meso-limbic dopaminergic systems involved in the therapeutic response to antipsychotics. Functional experiments have suggested that BDNF may be involved in the etiology of schizophrenia. METHODS AND RESULTS: In this study, we genotyped two important functional polymorphisms in the BDNF gene using a sample of Han Chinese patients consisting of 340 schizophrenic patients and 343 healthy controls. We found a statistical difference in the 232-bp allele distribution of the BDNF gene (GT)n dinucleotide repeat polymorphism between the schizophrenic patients and controls. In early onset patients, the 234-bp allele had a risk role. For the chlorpromazine-induced extrapyramidal syndrome, the 230-bp allele and the 234-bp allele acted in opposite directions, that is, patients with the 230-bp allele of the (GT)n polymorphism exhibited a lower degree of induced extrapyramidal syndrome. Haplotype-based analysis also revealed a very important risk haplotype (P=0.0000226546). CONCLUSION: These findings suggest that BDNF plays an important role in the susceptibility to schizophrenia and that the (GT)n repeat polymorphism of the BDNF gene may be an independent contributor to the chlorpromazine treatment-sensitive form of schizophrenia. FAU - Xu, Ming-Qing AU - Xu MQ AD - Bio-X Life Science Research Centre, Shanghai Jiao Tong University, PR China. mingqingxu@gmail.com FAU - St Clair, David AU - St Clair D FAU - Feng, Guo-Yin AU - Feng GY FAU - Lin, Zhi-Guang AU - Lin ZG FAU - He, Guang AU - He G FAU - Li, Xingwang AU - Li X FAU - He, Lin AU - He L LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Pharmacogenet Genomics JT - Pharmacogenetics and genomics JID - 101231005 RN - 0 (Antipsychotic Agents) RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (DNA Primers) RN - U42B7VYA4P (Chlorpromazine) SB - IM MH - Adult MH - Alleles MH - Antipsychotic Agents/*adverse effects MH - Asian People/*genetics MH - Basal Ganglia Diseases/*chemically induced/*genetics MH - Base Sequence MH - Brain-Derived Neurotrophic Factor/*genetics MH - Case-Control Studies MH - China MH - Chlorpromazine/*adverse effects MH - DNA Primers/genetics MH - Dinucleotide Repeats MH - Female MH - Gene Frequency MH - Genetic Predisposition to Disease MH - Haplotypes MH - Humans MH - Male MH - Middle Aged MH - Pharmacogenetics MH - Polymorphism, Single Nucleotide MH - Risk Factors MH - Schizophrenia/*drug therapy/*genetics MH - Syndrome EDAT- 2008/04/15 09:00 MHDA- 2008/08/14 09:00 CRDT- 2008/04/15 09:00 PHST- 2008/04/15 09:00 [pubmed] PHST- 2008/08/14 09:00 [medline] PHST- 2008/04/15 09:00 [entrez] AID - 10.1097/FPC.0b013e3282f85e26 [doi] PST - ppublish SO - Pharmacogenet Genomics. 2008 Jun;18(6):449-57. doi: 10.1097/FPC.0b013e3282f85e26.