منابع مشابه
The effect of antioxidant supplementation in semen extenders on semen quality and lipid peroxidation of chilled bull spermatozoa
The aim of this study was to determine the effects of the antioxidants superoxide dismutase (SOD),glutathione peroxidase (GPx) and butylated hydroxytoluene (BHT) on microscopic semen parameters andlipid peroxidation following the freeze-thawing of bull semen. Ejaculates were collected from five Holsteinbulls and pooled at 37°C. The semen samples were diluted with a CEY extender containing addit...
متن کاملActivity of antioxidant enzymes in seminal plasma and their relationship with lipid peroxidation of spermatozoa.
PURPOSE To determine the activity of seminal plasma catalase (CAT), superoxide dismutase (SOD) and glutathione peroxidase (GPX) and their relationship with malondialdehyde (MDA), as a marker of lipid peroxidation, content of spermatozoa and seminal plasma in normozoospermic and asthenozoospermic males. MATERIALS AND METHODS Semen samples were obtained from 15 normozoospermic and 30 asthenozoo...
متن کاملLipid Peroxidation and Nitric Oxide Levels in Male Smokers' Spermatozoa and their Relation with Sperm Motility
BACKGROUND Nitric oxide (NO) is synthesized from L-arginine by a family of enzymes known as nitric oxide synthases. Low concentrations of NO is essential in biology and physiology of spermatozoa, but high amounts of NO is toxic and has negative effects on sperm functions. Moreover, sperm membrane contains high concentrations of polyunsaturated fatty acids that are highly susceptible to oxidativ...
متن کاملLipid Peroxidation
Södergren, E. 2000. Lipid peroxidation in vivo. Evaluation and application of methods for measurement. Acta Universitatis Upsaliensis. Comprehensive Summaries of Uppsala Dissertations from the Faculty of Medicine 949. 78 pp. Uppsala. ISBN 91-554-4791-0. Lipid peroxidation is thought to be an important factor in the pathophysiology of a number of diseases and in the process of ageing, but its me...
متن کاملIntracellular free Ca2+ concentration in fowl spermatozoa and its relationship to motility and respiration in spermatozoa.
The ability of fowl spermatozoa to accumulate and de-esterify the intracellular fluorescent Ca2+ indicator fura-2 was established. The cytosolic Ca2+ concentrations, measured by this technique, did not change after the addition of 1 mmol EGTA l-1. Subsequently, addition of the calcium ionophore A23187 caused a reduction in cytosolic Ca2+ concentrations, presumably by efflux of Ca2+ from the spe...
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ژورنال
عنوان ژورنال: Poultry Science
سال: 1978
ISSN: 0032-5791
DOI: 10.3382/ps.0571766