MORPHOMETRIC, INSTRUMENTAL AND LABORATORY PARAMETERS OF FEMALE RATS WITH EXPERIMENTAL METABOLIC SYNDROME

Abstract

The aim of the study – to learn the dynamics of changes of morphometric, instrumental and laboratory parameters in mature females rats with experimental metabolic syndrome.
 Material and Methods. 20 females of white, mature laboratory rats, aged 18–20 months were divided into 2 groups. The first one is an experimental group: 13 female rats with experimental metabolic syndrome; the second one – control group: 7 intact rats, with standard food and water regime. When working with animals, the standards of the Council of Europe Bioethics Convention 1997, the European Convention for the Protection of Vertebrate Animals were observed. Instruments used during scientific research were subject to metrological control.
 The simulation of the metabolic syndrome occurred during 60 days. The females supported a special high-calorie diet (grain with margarine 82 % milk fat, corn and sunflower seeds). The water regime included a 20 % solution of fructose and regular water ad libitum, with change every other day. Also, during the first and the fourth weeks of the experiment, the female daily subcutaneously administered Dexamethasone solution at a dosage of 0.1 mg/kg.
 Results. Since the beginning of the experiment, female rats who received a special high-calorie diet showed a statistically significant increase in all morphometric and instrumental indexes compared to similar rats in the control group. An increase in body weight in the experimental group was found to be 28.93 % higher than the original weight, was observed arterial hypertension (141/85±5) mmHg, dyslipidemia: elevated total cholesterol (5.37±0.33) mmol/L and TG (2.55±0.24) mmol/L; elevated level glucose (8.52±0.17) mmol/L. The above indicators are criteria indicating the presence of metabolic syndrome in animals under study.
 Conclusions. The proposed model of experimental metabolic syndrome, which includes subcutaneous administration of Dexamethasone solution at a dosage of 0.1 mg/kg in the first and the fourth weeks of experiment, with a special high calorie diet and a 20 % solution of fructose, is an effective way to reproduce the metabolic syndrome in small rodents.