RESUMO
Objective To explore the association of methylenetetrahydrofolate reductase (MTHFR)gene C677T polymorphism with weight gain induced by risperidone.Methods 356 patients with schizophrenia according to the DSM-IV criteria in this study.The height and body weight of the patients were measured before starting risperidone treatment and 8-week later.The MTHFRC677T polymorphism was genotyped using direct DNA sequencing method.Results A significant association was found between MTHFR gene C677T and body weight mass index (BMI) change after 8-week risperidone treatment.CC-carriers experienced higher BMI gain than CT/TT-carriers (CC (4.47 ± 1.09),CT (4.54 ± 1.27),TT (2.31 ± 0.75),F =5.634,P＜0.01).The frequency of allele C in bodyweight gain (＞7％) was higher than that in non-bodyweight gain groups (48.4％ vs 32.4％,x2=11.342,P＜0.01).Conclusion MTHFRC677T polymorphism is associated with risperidone induced weight gain in Chinese Han population.
RESUMO
Objective To explore the association of methylenetetrahydrofolate reductase (MTHFR)gene C677T polymorphism with weight gain induced by risperidone.Methods 356 patients with schizophrenia according to the DSM-IV criteria in this study.The height and body weight of the patients were measured before starting risperidone treatment and 8-week later.The MTHFRC677T polymorphism was genotyped using direct DNA sequencing method.Results A significant association was found between MTHFR gene C677T and body weight mass index (BMI) change after 8-week risperidone treatment.CC-carriers experienced higher BMI gain than CT/TT-carriers (CC (4.47 ± 1.09),CT (4.54 ± 1.27),TT (2.31 ± 0.75),F =5.634,P＜0.01).The frequency of allele C in bodyweight gain (＞7％) was higher than that in non-bodyweight gain groups (48.4％ vs 32.4％,x2=11.342,P＜0.01).Conclusion MTHFRC677T polymorphism is associated with risperidone induced weight gain in Chinese Han population.