Browsing by Author "Moronkeji, Muyiwa Adeleye"
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Item Alteration of neutral-alpha glucosidase in seminal plasma and correlation with sperm motility among men investigated for infertility Nigeria: a cross-sectional study(Fertility Science and Research, 2020-06-30) Moronkeji, Muyiwa Adeleye; Emokpae, Mathias AbiodunIntroduction: Proteomic studies are becoming popular lately among reproductive biologists in the diagnosis and management of several diseases including male infertility. Objective: To evaluate the level of Neutral-alpha Glucosidase (NAG) in the seminal plasma of men being investigated for infertility in and to correlate its activity with sperm motility. Materials and Methods: Four hundred men age range 23–60 years were consecutively recruited in the study. After physical and clinical evaluation, the semen was collected by self or assisted masturbation and analysis was done according to the World Health Organization guidelines. The semen was then centrifuged and seminal plasma separated for the assay of NAG activity by ELISA technique using reagents supplied by Melson Medical Co, Shangai, China within one week of collection. The participants were categorized in to normozoospermia (191), oligozoospermia (98), severe oligozoospermia (70) and azoospermia (41) based on sperm count. Results: The mean levels of NAG activity decreased with decreasing levels of sperm count with values lowest among azoospermia and highest among normozoospermic subjects. The comparison of NAG activity between the various categories and control subjects was significantly different (P<0.001) except for normozoospermia which was not significantly different (P>0.05) when compared with controls. The mean NAG activity level was significantly lower among the asthenozoospermia (P<0.001) compared with normozoospermia. The NAG activity correlated positively with percentage sperm motility (r=0.126; P<0.02) and percentage sperm count (r=0.107; P<0.05). Conclusion: The findings indicate that NAG can be used for the assessment of semen quality as an adjunct to traditional semen analysis.Item Association of Copper-to Zinc Ratio with Sperm Concentration among Males Investigated for Infertility(Journal of Infertility and Reproductive Biology, 2020-09-20) Abiodun Emokpae, Mathias; Moronkeji, Muyiwa AdeleyeBackground: The importance of copper and zinc in the fertility potential of males are well understood. The close relationship and the antagonistic interactions between copper and zinc requires further investigation especially because of conflicting reports in literature on the association of the trace elements with sperm quantity and quality. This study evaluates seminal plasma copper and zinc concentrations, copper-to-zinc ratio and their associations with sperm concentration in infertile males. Methods: This is a cross-sectional study of 400 males investigated for infertility and 100 male control subjects. Seminal plasma copper and zinc were determined using atomic absorption spectrophotometry technique (Buck Scientific Model VGP-210, Germany). The subjects were grouped based on sperm count; normozoospermia (>15 x 106 cells/mL), oligozoospermia (<15 x 106 cells/mL) and azoospermia (no sperm cell). The levels of copper, zinc and Cu/Zn ratio were compared using unpaired Students-t-test and analysis of variance while Pearson correlation coefficient was used to assess the correlation between measured variables and sperm count. Results: Seminal plasma zinc was significantly lower ((p<0.001) while copper and Cu/Zn ratio were significantly higher (p<0.001) among infertile males than controls. Seminal plasma levels of copper and Cu/Zn ratio increased with decreasing concentrations of sperm cells while zinc levels increase with increasing concentration of sperm cells. Conclusion: Copper-to-zinc ratio correlated with sperm concentration in infertile males. The interaction between copper and zinc may be routinely considered in the clinical evaluation of the infertile men