The role of calcium in human sperm in relation to the antioxidant syste
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Śląski Uniwersytet Medyczny w Katowicach Wydział Lekarski z Oddziałem Lekarsko-Dentystycznym w Zabrzu Zakład Biochemii Ogólnej Katedry Biochemii w Zabrzu. Kierownik Katedry i Zakładu: prof. dr hab. n. med. E. Birkner
Śląski Uniwersytet Medyczny w Katowicach Wydział Lekarski z Oddziałem Lekarsko-Dentystycznym w Zabrzu Katedra i Oddział Kliniczny Ginekologii, Położnictwa i Ginekologii Onkologicznej w Bytomiu Śląski Uniwersytet Medyczny w Katowicach. Kierownik Katedry: prof. dr hab. n. med. A. Olejek
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Aleksandra Kasperczyk   

Śląski Uniwersytet Medyczny w Katowicach Wydział Lekarski z Oddziałem Lekarsko-Dentystycznym w Zabrzu Zakład Biochemii Ogólnej Katedry Biochemii w Zabrzu ul. Jordana 19, 41-808 Zabrze tel. (32) 272 32 18
Med Srod. 2014;17(1):34-50
The human ejaculate consists of sperm and seminal plasma consisting of organic and inorganic compounds including micronutrients. Calcium is essential in the process of cell hyperactivation and sperm capacitation. Both these processes result in the generation of reactive oxygen species resulting in the induction of antioxidant system.

Material and Methods:
Semen samples were collected from 61 men of an average age of 33 years with no sperm pathology. The study population was divided into two groups with low and high concentrations of calcium in the seminal plasma. Analysis of the collected samples included: sperm morphology, superoxide dismutase, catalase, glutathione reductase, sulphydryl groups, malonaldialdehyde, lipofuscin, vitamin A and E, bilirubin, uric acid, albumin, and total oxidant status.

In individuals with high level of calcium in the seminal plasma (mean 38.3 mg/dl) were found significant increased nonlinear motility, higher activity of mangane isoenzyme superoxide dismutase, glutathione reductase, concentration of vitamin A and E, bilirubin and albumin in comparison with individuals with lower level of calcium(mean 22.0 mg/dl). Nonlinear motility, the activity of enzymes, and concentration of antioxidants, as mentioned above, positively correlated (p*0,05) with calcium level (R40.26–0.64). Lower concentration of lipofuscin was observed in group with high level of calcium and negative correlation between Ca2& and lipofuscin (R410.36, p*0.05).

The present study showed calcium beneficial effect on motility of spermatozoa in physiological semen and stimulation of antioxidant systems by high concentrations of this element in sperm plasma in men with normal spermiogram.

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