Oxidative Stress In Semen And Male Infertility

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"Full semen analysis according to WHO semen laboratory manual 5th edition will be done pre and 3 months post-treatment.~After complete liquefaction, each sample was evaluated for both macroscopic parameters such as color, pH, ejaculate volume, age of the sample and viscosity. An aliquot of the sample was examined for sperm concentration, total sperm count, total and progressive motility and sperm morphology using the WHO fifth edition guidelines (WHO, 2010). Semen analysis was done manually using a hemocytometer. Sperm motility was assessed and categorized as progressive or non-progressive. Morphology was assessed by a single experienced technician using the Diff-Quik staining protocol. Kruger's strict criteria were used for morphology assessment with 4% normal morphology as a cut-off (WHO, 2010)."

Sperm DNA fragmentation was evaluated using the Halosperm kit from Halotech DNA, S.L. (Madrid, Spain) as per manufacturer instructions. The method is based on the sperm chromatin dispersion test (Fernández et al., 2003). A minimum of 500 spermatozoa were scored and reported as percentage of sperm with spermatozoa with fragmented DNA. Normal value is measure at a cut-off value of more than 30%

Oxidative stress was assessed by measuring the static oxidation-reduction potential (sORP) of neat liquefied semen samples using the MiOXSYSTM System (Aytu Bioscience, Inc., Englewood, USA). This is a galvanostatic measure of the electron transfer from reductants (antioxidants) to oxidants under a steady low voltage reducing current. Thus, providing an aggregate measure of all current oxidant activity and antioxidant activity in a sample. Higher sORP values (millivolts, mV) indicate a higher oxidant activity relative to the antioxidant activity and therefore greater state of oxidative stress.