Oxidative stress and brain glutamate-mediated excitability in depressed patients

Carlo Salustri, Rosanna Squitti, Filippo Zappasodi, Mariacarla Ventriglia, Maria Gabriela Bevacqua, Mauro Fontana, Franca Tecchio

Research output: Contribution to journalArticle

Abstract

Background: Several neuropsychiatric pathologies have been recently linked to oxidative stress. In this study, we investigated the relationship between depression, markers of oxidative stress and neurotransmission, as expressed by sensory cortex excitability. Methods: Serum levels of oxidative stress markers and somatosensory magnetic fields, evoked by external galvanic stimulation, were measured in 13 depressed patients and 13 controls. Results: Depressives had higher levels of total and free copper than controls and lower levels of transferrin. They also showed lower sensory cortex excitability, which correlated with copper levels in controls, but not in patients. Transferrin correlated with sensory cortex excitability in both patients and controls, although in opposite ways. Copper level results associated with the patients' clinical status. Limitations: Small sample size and possible sampling bias in patient selection. Conclusions: Pro-oxidant agents appear to affect neuronal excitability and clinical state of depressed patients, as free copper excess alters their cortical glutamatergic neurotransmission.

Original languageEnglish
Pages (from-to)321-325
Number of pages5
JournalJournal of Affective Disorders
Volume127
Issue number1-3
DOIs
Publication statusPublished - Dec 2010

Keywords

  • Cortical excitability
  • Depression
  • Glutamate
  • Magnetoencephalography
  • Oxidative stress

ASJC Scopus subject areas

  • Psychiatry and Mental health
  • Clinical Psychology

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    Salustri, C., Squitti, R., Zappasodi, F., Ventriglia, M., Bevacqua, M. G., Fontana, M., & Tecchio, F. (2010). Oxidative stress and brain glutamate-mediated excitability in depressed patients. Journal of Affective Disorders, 127(1-3), 321-325. https://doi.org/10.1016/j.jad.2010.05.012