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Magnesium Research

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Magnesium, C-reactive protein, and cortisol in drug-naïve patients with short illness-duration, first episode major depressive disorder: possible immunomodulatory role for magnesium Volume 29, numéro 4, December 2016

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Auteurs
1 Department of Psychiatry, Medical University of Gdańsk, Gdańsk, Poland
2 Department of Toxicology, Medical University of Gdańsk, Gdańsk, Poland
3 Radiometer Sp. z o.o., Warsaw, Poland
* Correspondence: Wiesław Jerzy Cubała MD, PhD. Department of Psychiatry, Medical University of Gdańsk, Dębinki St. 7 build. 25, 80-952 Gdańsk, Poland
  • Mots-clés : magnesium, cortisol, C-reactive protein, major depressive disorder, drug-naïve individuals
  • DOI : 10.1684/mrh.2016.0413
  • Page(s) : 169-74
  • Année de parution : 2016

Plasma magnesium concentration alterations, hypercortisolaemia, and systemic inflammation are observed in major depressive disorder (MDD). This exploratory study examined whether, and to what extent, plasma magnesium is related to C-reactive protein (CRP) levels and cortisolaemia in MDD. The concentrations of plasma magnesium, salivary CRP, and baseline plasma cortisol were studied in 20, treatment-naïve MDD patients with short-illness-duration, first affective episodes and 20 matched controls. Depressed patients showed a basal score higher than 20 on the Hamilton Rating Scale for Depression (HAMD-17). Significantly higher magnesium (p = 0.016) and baseline cortisol (p = 0.01) concentrations were observed in MDD as compared to controls. No significant difference in CRP concentrations between the MDD and control groups was observed. A significant negative correlation was seen between magnesium and CRP in MDD (p<0.01), whereas no correlation was found in controls. A significant positive correlation was found between cortisol and CRP, both in MDD subjects (p = 0.008) and controls (p = 0.004). No significant correlations were observed between magnesium and cortisol levels. The study supports data for hypercortisolaemia in MDD, but provides no evidence of primary hypomagnesaemia or elevated CRP levels in drug-naïve MDD patients with short-illness-duration. The study supports the hypothesis linking hypercortisolaemia to systemic inflammation, with hypermagnesaemia exerting an immunomodulatory action at early stages of the disease.