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Andrologia

Assay of total glutathione and glutathione disulphide in seminal plasma of male partners of couples presenting for a fertility evaluation.


PMID 24124871

Abstract

A method is described here for the determination of total glutathione (TGSH) and glutathione disulphide (GSSG) in the seminal plasma of the male partners of couples requesting a fertility evaluation. A suitable sample preparation procedure prior to high-performance liquid chromatography analysis is discussed. After adequate sample preparation, the samples were derivatised with ortho-phthaldialdehyde to form a stable, highly fluorescent tricyclic derivative. Reversed-phase column chromatography was used for the separation, and the effluent was monitored with a fluorescence detector at an excitation wavelength of 350xa0nm and an emission wavelength of 420xa0nm. The analytical performance of this method was satisfactory. The intra-assay and inter-assay coefficients of variation were below 10%. The recoveries were as follows: 94.1% (CV 2.3%) for TGSH and 93.2% (CV 4.0%) for GSSG. No significant differences were found in either TGSH or GSSG concentration between the smokers and nonsmokers (2.07xa0±xa01.28xa0μm versus 1.56xa0±xa01.20xa0μm, Pxa0=xa00.431 and 95xa0±xa056xa0nm versus 112xa0±xa0138xa0nm, Pxa0=xa00.825).