PMID- 17459549 OWN - NLM STAT- MEDLINE DCOM- 20070828 LR - 20220310 IS - 0278-5846 (Print) IS - 0278-5846 (Linking) VI - 31 IP - 5 DP - 2007 Jun 30 TI - Treatment with risperidone for 4 weeks increased plasma 3-methoxy-4-hydroxypnenylglycol (MHPG) levels, but did not alter plasma brain-derived neurotrophic factor (BDNF) levels in schizophrenic patients. PG - 1072-7 AB - In the present study, we investigated the effects of risperidone treatment for 4 weeks on plasma levels of 3-methoxy-4-hydroxyphenylglycol (MHPG) and brain-derived neurotrophic factor (BDNF) in 89 schizophrenic patients. We also compared the plasma levels of BDNF and MHPG between the schizophrenic group and 103 sex-and age-matched normal controls. In addition, we investigated the effects of two SNPs of the noradrenaline transporter (NAT) gene on plasma levels of MHPG, BDNF, and clinical improvement. The mean dose of risperidone was 3.8+/-1.4 mg/day. We demonstrated that treatment with risperidone increased plasma MHPG levels, and this increase was associated with an improvement of the negative symptoms of schizophrenia. In contrast, plasma BDNF did not change after 4 weeks of risperidone treatment, and the two SNPs in NAT did not influence the response to risperidone treatment or plasma MHPG and BDNF levels. These results suggest that the enhancement of noradrenergic neurons by risperidone, which occurs independently of the two SNPs of NAT, plays a role in the clinical efficacy of the drug. FAU - Yoshimura, Reiji AU - Yoshimura R AD - Department of Psychiatry, University of Occupational and Environmental Health 1-1Iseigaoka, Yahatanishiku, Kitakyushu, Japan. yoshi621@med.uoeh-u.ac.jp FAU - Hori, Hikaru AU - Hori H FAU - Sugita, Atsuko AU - Sugita A FAU - Ueda, Nobuhisa AU - Ueda N FAU - Kakihara, Shingo AU - Kakihara S FAU - Umene, Wakako AU - Umene W FAU - Nakano, Yuichiro AU - Nakano Y FAU - Shinkai, Koji AU - Shinkai K FAU - Mitoma, Masae AU - Mitoma M FAU - Ohta, Makiko AU - Ohta M FAU - Shinkai, Takahiro AU - Shinkai T FAU - Nakamura, Jun AU - Nakamura J LA - eng PT - Journal Article DEP - 20070324 PL - England TA - Prog Neuropsychopharmacol Biol Psychiatry JT - Progress in neuro-psychopharmacology & biological psychiatry JID - 8211617 RN - 0 (Antipsychotic Agents) RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Catecholamines) RN - 0 (Isoxazoles) RN - 0 (Norepinephrine Plasma Membrane Transport Proteins) RN - 0 (Pyrimidines) RN - 534-82-7 (Methoxyhydroxyphenylglycol) RN - L6UH7ZF8HC (Risperidone) RN - R8P8USM8FR (Paliperidone Palmitate) SB - IM MH - Adolescent MH - Adult MH - Aged MH - Antipsychotic Agents/blood/*therapeutic use MH - Brain-Derived Neurotrophic Factor/*blood MH - Catecholamines/metabolism MH - Chromatography, High Pressure Liquid MH - Female MH - Genotype MH - Humans MH - Immunoenzyme Techniques MH - Isoxazoles/blood MH - Male MH - Methoxyhydroxyphenylglycol/*blood MH - Middle Aged MH - Norepinephrine Plasma Membrane Transport Proteins/blood MH - Paliperidone Palmitate MH - Polymorphism, Genetic MH - Pyrimidines/blood MH - Risperidone/blood/*therapeutic use MH - Schizophrenia/*blood/*drug therapy EDAT- 2007/04/27 09:00 MHDA- 2007/08/29 09:00 CRDT- 2007/04/27 09:00 PHST- 2006/12/21 00:00 [received] PHST- 2007/03/15 00:00 [revised] PHST- 2007/03/15 00:00 [accepted] PHST- 2007/04/27 09:00 [pubmed] PHST- 2007/08/29 09:00 [medline] PHST- 2007/04/27 09:00 [entrez] AID - S0278-5846(07)00104-2 [pii] AID - 10.1016/j.pnpbp.2007.03.010 [doi] PST - ppublish SO - Prog Neuropsychopharmacol Biol Psychiatry. 2007 Jun 30;31(5):1072-7. doi: 10.1016/j.pnpbp.2007.03.010. Epub 2007 Mar 24.