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Volume 11, Issue 6 (November 2009) 11, 695–702; 10.1038/aja.2009.55
The in vitro effects of superoxide, some commercially available antioxidants and red palm oil on sperm motility
Yapo Guillaume Aboua1, Stefan Stephanus du Plessis2, Patricia Reichgelt2, Nicole Brooks1
1 Department of Biomedical Sciences, Faculty of Health and Wellness Sciences, Cape Peninsula University of Technology, Bellville 7535, South Africa
2 Division of Medical Physiology, Faculty of Health Sciences, Stellenbosch University, Tygerberg 7505, South Africa
Correspondence: Dr Stefan Stephanus du Plessis,ssdp@sun.ac.za
Received 26 February 2009; Revised 28 July 2009; Accepted 10 August 2009; Published online 5 October 2009.
| Abstract |
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In this study, two commercially available superoxide scavengers, tetrakis (1-methyl-4-pyridyl) porphyrin (Mn[III]TMPyP) and superoxide dismutase (SOD), as well as red palm oil (RPO), a natural vegetable oil, had been used to investigate their possible in vitro effects against the toxic effects of superoxide (O2.) on human sperm motility. Semen samples were obtained from 12 normozoospermic healthy volunteer donors aged between 19 and 23 years. The O2. donor 2,3-dimetoxyl-1,4-naphthoquinone (DMNQ) (2.5 μmol L-1–100 μmol L-1) was added to normozoospermic post-swim-up sperm in the presence or absence of Mn(III)TMPyP (50 μmol L-1), SOD (50 IU) or RPO (0.1% or 0.5%). Computer-assisted semen analysis was used to analyze various motility parameters. The parameters of interest were percentage of motile cells, progressive motility, rapid cells and static cells. Concentrations of higher than 25 μmol L-1 DMNQ were detrimental to sperm motility. Mn(III)TMPyP was able to attenuate the effect of O2. on the motility parameters. In vitro addition of SOD and RPO showed harmful effects on sperm motility.
Keywords: antioxidants, motility, red palm oil, superoxide
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