PMID: 22580537May 15, 2012Paper

Influence of the phosphodiesterase type 5 inhibitor, sildenafil, on antidepressant-like activity of magnesium in the forced swim test in mice

Pharmacological Reports : PR
Katarzyna SocałaPiotr Wlaź

Abstract

Magnesium, which acts as an antagonist of N-methyl-D-aspartate (NMDA) subtype of glutamate receptors, exerts antidepressant-like activity in animal models of depression. The present study was undertaken to elucidate the influence of sildenafil, a phosphodiesterase type 5 inhibitor, on the anti-immobility action of magnesium in the forced swim test in mice. Swim sessions were conducted by placing mice in glass cylinders filled with water for 6 min and the duration of the behavioral immobility during the last 4 min of the test was evaluated. Locomotor activity was measured with photoresistor actimeters. Serum and brain magnesium levels were assayed spectrophotometrically. Magnesium at a dose of 30 mg/kg, i.p. significantly decreased the immobility time while sildenafil (5, 10 and 20 mg/kg, i.p.) in a dose-dependent manner reduced the antidepressant-like activity of magnesium. The co-administration of magnesium with sildenafil at the highest dose entirely abolished the antidepressant-like effect of magnesium and caused a statistically significant increase in immobility duration as compared to the control group. Combination of magnesium with sildenafil resulted in a potent reduction (80%) of locomotor activity and pharmacokinetic s...Continue Reading

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Citations

Aug 21, 2013·Pharmacological Reports : PR·Anna SerefkoEwa Poleszak
Sep 18, 2014·Journal of Nephrology·Jürgen Floege

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