Homocysteine and cognition in first-episode psychosis patients

  • Rosa Ayesa-Arriola
  • Rocío Pérez-Iglesias
  • José Manuel Rodríguez-Sánchez
  • Ignacio Mata
  • Elsa Gómez-Ruiz
  • Maite García-Unzueta
  • Obdulia Martínez-García
  • Rafael Tabares-Seisdedos
  • Jose L. Vázquez-Barquero
  • Benedicto Crespo-Facorro
Original Paper

Abstract

In the last years, there has been growing evidence linking elevated homocysteine levels with cognitive dysfunction in several neurological and neuropsychiatric diseases. The aim of the present study was to investigate the potential relationship between elevated homocysteine levels and cognitive deficits in first-episode psychosis patients. Plasma levels and cognitive performance of 139 patients and 99 healthy volunteers were compared. Patients were classified as elevated homocysteine (>90 percentile for controls) and normal and compared on 22 cognitive outcome measures grouped into cognitive domains known to be impaired in schizophrenia. Patients had a statistically significant increase in plasmatic homocysteine levels. In addition, they presented with significantly increased cognitive deficits. However, no relationship between homocysteine levels and cognitive impairment was detected. These results suggest the need for further studies to clarify the role of homocysteine in the etiology and prognosis of psychosis.

Keywords

Homocysteine Cognition Psychosis Schizophrenia 

Supplementary material

406_2012_302_MOESM1_ESM.docx (21 kb)
Supplementary material 1 (DOCX 20 kb)

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Copyright information

© Springer-Verlag 2012

Authors and Affiliations

  • Rosa Ayesa-Arriola
    • 1
    • 2
  • Rocío Pérez-Iglesias
    • 1
    • 2
  • José Manuel Rodríguez-Sánchez
    • 1
    • 2
  • Ignacio Mata
    • 1
    • 2
  • Elsa Gómez-Ruiz
    • 1
  • Maite García-Unzueta
    • 3
  • Obdulia Martínez-García
    • 1
  • Rafael Tabares-Seisdedos
    • 2
    • 4
  • Jose L. Vázquez-Barquero
    • 1
    • 2
  • Benedicto Crespo-Facorro
    • 1
    • 2
  1. 1.Department of Psychiatry, Marqués de Valdecilla University Hospital, IFIMAV, School of MedicineUniversity of CantabriaSantanderSpain
  2. 2.CIBERSAM, Centro Investigación Biomédica en Red Salud MentalMadridSpain
  3. 3.Department of Endocrinology, Marqués de Valdecilla University HospitalUniversity of CantabriaSantanderSpain
  4. 4.Department of MedicineUniversity of ValenciaValenciaSpain

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