ION CHANGES IN BLOOD DURING OPISTHORCHIASIS IN EXPERIMENT
Changes in the ionic composition of blood in opisthorchiasis, in the long-term inva-sion, is a current little-studied aspect. The experiment was conducted on rodents (rabbits), of puberty, male. Infection was carried out by oral administration of the metacercariae Opistorchis felineus at the rate of 50 larvae per individual (n = 10), defined in the observation group. The control group consisted of clinically healthy animals (n = 10). After 18 months, a biochemical blood test was performed to de-termine the quantitative indicators of potassium and sodium. Plasma isolation was performed by centrifuging venous blood, then incubated at room temperature for an hour, and the indicators were calculated using an automated hematology analyzer. Statistical data processing was performed using the software package Microsoft Of-fice Exel by calculating the arithmetic average with standard error of the mean. The analysis of intergroup data was carried out using the non-parametric Mann-Whitney U-test for unrelated aggregates with an abnormal distribution, with p ≤ 0.05.It is established that the content of potassium sharply exceeds the normal numerical criteria, the average amount of this ion is 6.932±0.772. When compared with the control, the differences are statistically significant (U = 0, p > 0.05). The amount of sodium in the observation group was 141.4±6.888, which falls within the range of normal values. When compared with the control, the differences are not statistically significant (U = 36, p > 0.05).Thus, when opisthorchiasis in the long-term invasion in rabbits in the experiment, an ionic imbalance is observed, with a predominance of potassium, with normal so-dium content. The established changes can be associated with impaired renal func-tion, angiopathy, general intoxication, provoked by the disease.