FEATURES OF LIPID PEROXIDATION IN THE BLOOD AND HOMOGENATES OF RAT TISSUES IN CASE OF COMBINED INFLUENCE ОF STRESS FACTORS
DOI:
https://doi.org/10.11603/bmbr.2706-6290.2019.2.10692Keywords:
stress factors, combination, TBA-active products, experimentAbstract
The aim of the work. To analyze the level of active products of thiobarbituric acid in blood and homogenate of rat tissues under the condition of stress factors and their combination..
Materials and Methods. The experiments were conducted on 54 white non-linear male rats weighing 200–220 g. Animals were divided into 5 groups: 1 – control group (n = 6), 2 – chronic exposure to tobacco smoke (n = 12), 3 – chronic black leaf tea intoxication (n = 12), 4 – chronic immobilization stress (n = 12), 5 – combined influence of stress factors (n = 12). The principle of determining the content of TBA-active products (TBA-AP) is based on the fact that at high temperature in acidic medium malonic dialdehyde reacts with thiobarbituric acid, forming a trimethin complex.
Results and Discussion. Chronic exposure to tobacco smoke is accompanied by activation of lipid peroxidation, in particular, the maximum changes in the content of TBA-AP are observed in the lung homogenate (3.5 times), in chronic intoxication with black tea – in the myocardial homogenate (3.5 times), with immobility – in the stomach homogenate (2.9 times) relative to the control group. With the combined effect of stressors, more pronounced changes are observed relative to the isolated effect of each factor: in the heart (6.9 times), in the lungs (6.3 times), in the stomach (6.6 times) and in periodontium (in 5.1 times) relative to the control group.
Conclusions. The combined effect of stressors causes the activation of free radical oxidation processes, which is characterized by changes in TBA reactants, in particular, more pronounced changes are observed relative to the isolated effect of each factor relative to the control group.
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