PMID- 23609403 OWN - NLM STAT- MEDLINE DCOM- 20131107 LR - 20221207 IS - 1533-712X (Electronic) IS - 0271-0749 (Linking) VI - 33 IP - 3 DP - 2013 Jun TI - Association of brain serotonin transporter availability and brain-derived neurotrophic factor in models of serotonin transporter genotypes in healthy subjects. PG - 432-5 LID - 10.1097/JCP.0b013e3182904a80 [doi] AB - The S-allele of functional polymorphisms of the serotonin transporter (SERT) gene has been demonstrated to have lower transcriptional activity compared with the L-allele, which shows low expression of SERT in the brain. However, this finding cannot be consistently replicated in vivo. The aim of this study was to determine the availability of SERT based on SERT genotype. We also examined the relationship between brain-derived neurotrophic factor (BDNF) and the availability of SERT. Sixty-two healthy subjects were recruited. Each subject underwent single-photon emission computed tomography with I-ADAM (I-labeled 2-([2-(dimethylaminomethyl)phenyl]thio)-5-iodophenylamine) for imaging SERT in the brain. The specific uptake ratio was measured, and venous blood was drawn when the subject underwent single-photon emission computed tomography to evaluate BDNF levels and SERT genotype. All subjects expressed SERT genotypes that were consistent with a biallelic model, and 26 subjects had SERT genotypes that were consistent with a triallelic model. No differences in specific uptake ratio were detected in the midbrain, putamen, caudate, and thalamus based on the SERT genotype using the biallelic and triallelic models. Interestingly, The Pearson correlation coefficient revealed a positive correlation between BDNF and SERT availability. In particular, this relationship was observed in homozygous S-allele expression and a genotype with low functional expression (SaSa/SaLg) in the biallelic and triallelic models of SERT genotypes, respectively. This finding might explain why the SS genotype of SERT did not increase the risk of major depressive disorder in Asian populations and implicate an important role of BDNF in the patients, who has the SS genotype of the SERT gene. FAU - Chou, Yuan-Hwa AU - Chou YH AD - Department of Psychiatry, Taipei Veterans General Hospital & National Yang Ming University, Taipei, Taiwan. FAU - Chen, Chih-Ken AU - Chen CK FAU - Wang, Shyh-Jen AU - Wang SJ FAU - Tsai, Shih-Jen AU - Tsai SJ FAU - Lirng, Jiing-Feng AU - Lirng JF FAU - Liou, Ying-Jay AU - Liou YJ FAU - Lin, Chun-Lung AU - Lin CL FAU - Yang, Kai-Chun AU - Yang KC FAU - Lin, Ming-Wei AU - Lin MW FAU - Lo, Whai-Chin AU - Lo WC FAU - Liao, Mei-Hsiu AU - Liao MH FAU - Chen, Chia-Chieh AU - Chen CC LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - J Clin Psychopharmacol JT - Journal of clinical psychopharmacology JID - 8109496 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Serotonin Plasma Membrane Transport Proteins) RN - 333DO1RDJY (Serotonin) SB - IM MH - Adult MH - Alleles MH - Asian People/genetics MH - Brain/*metabolism MH - Brain-Derived Neurotrophic Factor/*genetics MH - Female MH - Genotype MH - Humans MH - Male MH - Middle Aged MH - *Models, Genetic MH - Serotonin/metabolism MH - Serotonin Plasma Membrane Transport Proteins/*genetics MH - Tomography, Emission-Computed, Single-Photon MH - Young Adult EDAT- 2013/04/24 06:00 MHDA- 2013/11/08 06:00 CRDT- 2013/04/24 06:00 PHST- 2013/04/24 06:00 [entrez] PHST- 2013/04/24 06:00 [pubmed] PHST- 2013/11/08 06:00 [medline] AID - 10.1097/JCP.0b013e3182904a80 [doi] PST - ppublish SO - J Clin Psychopharmacol. 2013 Jun;33(3):432-5. doi: 10.1097/JCP.0b013e3182904a80.