The aim of this study is to evaluate the effects of pineal gland functional state on the prooxydant processes and antioxidant system in the gingival tissues. Male rats were assigned into one of the following groups in accordance with the duration of photoperiod: 1) control--natural daylight; 2) permanent darkness for 14 days; 3) permanent light for 14 days. The following parameters were measured in gingival tissues and the blood serum: 1) prooxidant factors (dieneconjugates--DC and malonic dialdehyde--MD); 2) antioxidant enzymes (superoxide dismutase--SOD and catalase).
View Article and Find Full Text PDFThe effect of hypobaric hypoxia (6 hours everyday 7 days) under different duration of the photoperiod on oxidative (malonic aldehide and dienal conjugates) and antioxidative (catalase and superoxide dismutase activity) systems in the blood plasma of adult and infantile albino male rats were investigated. It is concluded that there is an age-dependent reaction of oxidative and antioxidative systems to the combined action of hypobaric hypoxia and different duration of the photoperiod. Reactions of pro- and antioxidative systems of adult and infantile rats were approximately the same under the conditions of a long-term darkness-and hypoxia but in the infants they were less manifested under the combined action of hypoxia and natural light or long-term lightening.
View Article and Find Full Text PDFRecent studies have shown that a significant proportion of men with severe infertility had microdeletions of the Y-chromosome. It has thus become important to screen men with a high risk of the Y-chromosome microdeletions, as this will determine if counseling is needed prior to starting infertility treatment. The current state of knowledge about the nature of genes responsible for spermatogenesis and significance of microdeletions of the Y-chromosome for male infertility are analyzed in the review.
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