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ISSN 2522-9028 (Print)
ISSN 2522-9036 (Online)
DOI: https://doi.org/10.15407/fz

Fiziologichnyi Zhurnal

is a scientific journal issued by the

Bogomoletz Institute of Physiology
National Academy of Sciences of Ukraine

Editor-in-chief: V.F. Sagach

The journal was founded in 1955 as
1955 – 1977 "Fiziolohichnyi zhurnal" (ISSN 0015 – 3311)
1978 – 1993 "Fiziologicheskii zhurnal" (ISSN 0201 – 8489)
1994 – 2016 "Fiziolohichnyi zhurnal" (ISSN 0201 – 8489)
2017 – "Fiziolohichnyi zhurnal" (ISSN 2522-9028)

Fiziol. Zh. 2013; 59(6): 57-62


The role of retinal-hypotalamic-pineal system in pro- and antioxidant processes in the gingival tissues of adult male albino rats

Khodorovs'kyĭ HI, Dmytrenko RR, Iasins'ka OV

    Bukovinian State Medical University, Chernivtsi, Ukraine
DOI: https://doi.org/10.15407/fz59.06.057

Abstract

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). The present findings indicate that the gingival tissue of rats reacts to the changes in the duration of photoperiod by peroxidation and activity of antioxidant enzymes. The antioxidant-prooxidant index under dark conditions (high function of the pineal gland) was lower than under condition of permanent light ("physiological" pinealectomy). Different durations of photoperiod change the intensity of free radical oxidation and the activity of antioxidant enzymes at the systemic level (blood serum) and much more at the organ level (tissues of gingiva). Our data suggest that the gingival tissues possess rather powerful protective antioxidant system, which depends on the functional state of the pineal gland.

Keywords: prooxidant processes, antioxidant enzymes, gingival tissues, photoperiod.

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