Comparison of Serum Homocysteine, Folate and Vitamin B12 Level in Korean Schizophrenics

한국 정신분열병 환자에서의 혈중 Homocysteine, 엽산, Vitamin B12 농도 비교연구

  • Kim, Tae Ho (Department of Psychiatry, Han-Yang University, College of Medicine) ;
  • Lee, Young Sik (Department of Psychiatry, Chung-Ang University, College of Medicine) ;
  • Song, Seong Yong (Department of Psychiatry, Chung-Ang University, College of Medicine) ;
  • Min, Kyung Joon (Department of Psychiatry, Chung-Ang University, College of Medicine) ;
  • Kee, Baik Seok (Department of Psychiatry, Chung-Ang University, College of Medicine) ;
  • Na, Chul (Department of Psychiatry, Chung-Ang University, College of Medicine) ;
  • Chae, Seok Lae (Department of Laboratory Medicine, Chung-Ang University, College of Medicine)
  • 김태호 (한양대학교 의과대학 신경정신과학교실) ;
  • 이영식 (중앙대학교 의과대학 신경정신과학교실) ;
  • 송성용 (중앙대학교 의과대학 신경정신과학교실) ;
  • 민경준 (중앙대학교 의과대학 신경정신과학교실) ;
  • 기백석 (중앙대학교 의과대학 신경정신과학교실) ;
  • 나철 (중앙대학교 의과대학 신경정신과학교실) ;
  • 채석래 (중앙대학교 의과대학 진단검사의학교실)
  • Published : 2004.11.30

Abstract

Objective:There have been a kind of transmethylation theory that high homocysteine serum concentration affects schizophrenia by neurotoxic mechanism and clinical reports that some schizophrenic patients with high homocysteine were improved by high folate ingestion. This study was done to confirm previous research results and find the clinical characteristics of schizophrenia showing high serum homocysteine and low folate. Method:We compared the serum levels of homocysteine, folate and vitamin B12 level between 234 schizophrenic patients(male 99, female 135) group and 234 normal controls(male 99, female 135) group. The subjects of two groups were age and sex matched. The evaluated clinical characteristics items were sex, age, onset of disease, hereditary loading, disease course, hallucination and subtype of schizophrenia. Results:1) Homocysteine level of the schizophrenia group was significantly higher than the normal control group and folate level of the schizophrenia group was significantly lower than the normal control group. Homocysteine level was more negatively correlated with folate level in the schizophrenia group than the normal control group. 2) The percentage of high homocysteine(above 12.46umol/L;90 percentile of normal control) was 33.8% of schizophrenia patients and 51.5% of male schizophrenia. The percentage of low folate(below 3.8nM/L;bottom tertile of normal control) was 66.2% of schizophrenia. 3) In low folate group and not-low folate group, schizophrenia showed significantly higher homocysteine level than normal control. Especially, low folate schizophrenia group showed significantly higher homocysteine level than low folate normal control group. Conclusions:Some schizophrenia patients with high serum homocysteine may be genetic defector and having low folate serum level. In that case, folate ingestion could be a good management for clinical improvement.

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