Jan Willem Muntjewerff

Summary

Affiliation: GGz Nijmegen
Country: The Netherlands

Publications

  1. ncbi request reprint Homocysteine metabolism and B-vitamins in schizophrenic patients: low plasma folate as a possible independent risk factor for schizophrenia
    Jan Willem Muntjewerff
    GGz Nijmegen, Mental Health Institute, P O Box 7049, 6503 GM Nijmegen, The Netherlands
    Psychiatry Res 121:1-9. 2003
  2. ncbi request reprint Hyperhomocysteinemia, methylenetetrahydrofolate reductase 677TT genotype, and the risk for schizophrenia: a Dutch population based case-control study
    Jan Willem Muntjewerff
    GGz Nijmegen, Mental Health Institute, Nijmegen, The Netherlands
    Am J Med Genet B Neuropsychiatr Genet 135:69-72. 2005
  3. ncbi request reprint Aberrant folate status in schizophrenic patients: what is the evidence?
    Jan Willem Muntjewerff
    GGz Nijmegen, Mental Health Institute Nijmegen, P O Box 7049, 6503 GM Nijmegen, The Netherlands
    Prog Neuropsychopharmacol Biol Psychiatry 29:1133-9. 2005
  4. ncbi request reprint Homocysteine, methylenetetrahydrofolate reductase and risk of schizophrenia: a meta-analysis
    J W Muntjewerff
    GGz Nijmegen, Mental Health Institute Nijmegen, Nijmegen, and Department of Psychiatry, University Medical Center, Utrecht, The Netherlands
    Mol Psychiatry 11:143-9. 2006
  5. ncbi request reprint No evidence for a preferential transmission of the methylenetetrahydrofolate reductase 677T allele in families with schizophrenia offspring
    Jan Willem Muntjewerff
    GGz Nijmegen, Mental Health Institute, 6503 GM Nijmegen, The Netherlands
    Am J Med Genet B Neuropsychiatr Genet 144:891-4. 2007
  6. ncbi request reprint Polymorphisms in catechol-O-methyltransferase and methylenetetrahydrofolate reductase in relation to the risk of schizophrenia
    Jan Willem Muntjewerff
    GGz Nijmegen, Mental Health Institute, PO Box 7049, 6503 GM Nijmegen, The Netherlands
    Eur Neuropsychopharmacol 18:99-106. 2008
  7. ncbi request reprint Catechol-O-methyltransferase genotype is associated with plasma total homocysteine levels and may increase venous thrombosis risk
    Henkjan Gellekink
    Laboratory of Pediatrics and Neurology, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
    Thromb Haemost 98:1226-31. 2007
  8. pmc Genome-wide analysis shows increased frequency of copy number variation deletions in Dutch schizophrenia patients
    Jacobine E Buizer-Voskamp
    Rudolf Magnus Institute of Neuroscience, University Medical Center Utrecht, Utrecht, The Netherlands
    Biol Psychiatry 70:655-62. 2011

Collaborators

Detail Information

Publications8

  1. ncbi request reprint Homocysteine metabolism and B-vitamins in schizophrenic patients: low plasma folate as a possible independent risk factor for schizophrenia
    Jan Willem Muntjewerff
    GGz Nijmegen, Mental Health Institute, P O Box 7049, 6503 GM Nijmegen, The Netherlands
    Psychiatry Res 121:1-9. 2003
    ..Evidence is presented suggesting that folate metabolism is disturbed in schizophrenic patients, independently of Hcy...
  2. ncbi request reprint Hyperhomocysteinemia, methylenetetrahydrofolate reductase 677TT genotype, and the risk for schizophrenia: a Dutch population based case-control study
    Jan Willem Muntjewerff
    GGz Nijmegen, Mental Health Institute, Nijmegen, The Netherlands
    Am J Med Genet B Neuropsychiatr Genet 135:69-72. 2005
    ..91-1.8]. Elevated homocysteine levels and the MTHFR 677TT genotype are associated with an increased risk for schizophrenia. These observations support a causal relation between disturbed homocysteine metabolism and schizophrenia...
  3. ncbi request reprint Aberrant folate status in schizophrenic patients: what is the evidence?
    Jan Willem Muntjewerff
    GGz Nijmegen, Mental Health Institute Nijmegen, P O Box 7049, 6503 GM Nijmegen, The Netherlands
    Prog Neuropsychopharmacol Biol Psychiatry 29:1133-9. 2005
    ..In addition, research should also focus on polymorphisms of genes related to folate metabolism...
  4. ncbi request reprint Homocysteine, methylenetetrahydrofolate reductase and risk of schizophrenia: a meta-analysis
    J W Muntjewerff
    GGz Nijmegen, Mental Health Institute Nijmegen, Nijmegen, and Department of Psychiatry, University Medical Center, Utrecht, The Netherlands
    Mol Psychiatry 11:143-9. 2006
    ..The elevated risk of schizophrenia associated with the homozygous genotype of the MTHFR 677C>T polymorphism provides support for causality between a disturbed homocysteine metabolism and risk of schizophrenia...
  5. ncbi request reprint No evidence for a preferential transmission of the methylenetetrahydrofolate reductase 677T allele in families with schizophrenia offspring
    Jan Willem Muntjewerff
    GGz Nijmegen, Mental Health Institute, 6503 GM Nijmegen, The Netherlands
    Am J Med Genet B Neuropsychiatr Genet 144:891-4. 2007
    ..In addition, we found no evidence that the maternal genotype influences the risk of having schizophrenia offspring substantially...
  6. ncbi request reprint Polymorphisms in catechol-O-methyltransferase and methylenetetrahydrofolate reductase in relation to the risk of schizophrenia
    Jan Willem Muntjewerff
    GGz Nijmegen, Mental Health Institute, PO Box 7049, 6503 GM Nijmegen, The Netherlands
    Eur Neuropsychopharmacol 18:99-106. 2008
    ..Evidence is emerging for the association of aberrant homocysteine-methylation cycle and increased risk of schizophrenia...
  7. ncbi request reprint Catechol-O-methyltransferase genotype is associated with plasma total homocysteine levels and may increase venous thrombosis risk
    Henkjan Gellekink
    Laboratory of Pediatrics and Neurology, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
    Thromb Haemost 98:1226-31. 2007
    ..61 [95% CI 0.97 to 2.65], p = 0.06) compared to control subjects. We show that the COMT rs4680 variant modulates tHcy, and might be associated with venous thrombosis risk as well...
  8. pmc Genome-wide analysis shows increased frequency of copy number variation deletions in Dutch schizophrenia patients
    Jacobine E Buizer-Voskamp
    Rudolf Magnus Institute of Neuroscience, University Medical Center Utrecht, Utrecht, The Netherlands
    Biol Psychiatry 70:655-62. 2011
    ....