According to the research that was conducted by the World Health Organization, millions of animals are used for scientific and commercial testing. Research on living animals has been started in ancient times. Descriptions of the dissection of live animals have been found in ancient Greek writings from as early as circa 500 BC. Physician-scientists such as Aristotle, Herophilus, and Erasistratus performed the experiments to discover the functions of living organisms. Furthermore, some of the experimentation conducted on animals today is required by law.
This article is devoted to the preclinical study of the anti- atherosclerotic drug firutas on pathomorphological changes in animal organs during prolonged administration. Preclinical study of the general toxicology of the drug "Firutas" showed that it belongs to the IV class of low-toxic compounds. The drug "Firutas" does not have a cumulative and locally irritating effect. With repeated intramuscular administration to mice and rats, it does not affect the behavior and weight dynamics of animals, does not have a toxic effect on the composition of peripheral blood, kidney and liver function, as well as on the pathomorphology of animal organs and tissues. All the above data allow us to conclude that the drug does not have a toxic effect on the body of animals
The purpose of the study was to determine and evaluate the features of morphological changes in the liver parenchyma of 5-month-old white outbred rats under the influence of anti inflammatory drugs under conditions of polypharmacy.
The object of study for experimental studies was taken 250 white male rats weighing 200-250 g.
The scientific novelty of the research is as follows: polypharmacy of anti-inflammatory drugs negatively affects all parameters of liver structures. Under the influence of polypharmacy, there is a decrease in the absolute mass of the liver, volume and morphological parameters of the liver parenchyma. The decrease in morphometric parameters depends on the number of drugs in polypharmacy; under conditions of polypharmacy, the state of the hepatic capillaries and internal bile ducts, as well as biological membranes, was studied, as a result of which the structural structure of the liver, the development of destruction of the hepatic tissue were studied, and the morphofunctional foundations of this condition were shown.
Implementation of the research results. Based on the obtained scientific results, the morphofunctional characteristics of the liver of rats in the norm and under the influence of polypharmacy were determined:
Approved methodological recommendations: "Methodology for determining the morphometric parameters of the liver during polypharmacy of anti-inflammatory drugs" (Conclusion No. 8n-r / 265 dated 14.03.2022 of the Ministry of Health of the Republic of Uzbekistan) and "Methodology for determining the morphometric parameters of the liver during polypharmacy of anti-inflammatory drugs" (Uzbekistan, Conclusion of the Ministry of Health of the Republic of Uzbekistan No. 8 n-z 180 of 2022), electronic program No. DGU 1038 "Program for studying the comparative characteristics of morphological changes caused by polypharmacy in the liver."
The scientific results obtained in the study of morphological and functional properties and morphometric changes in the structure of the liver under the influence of polypharmacy have been introduced into the practice of the Samarkand branch of the Republican Specialized Oncological and Radiological Scientific and Practical Medical Center of the Samarkand City Medical Association (Order of the Ministry of Health of the Republic of Uzbekistan dated March 14, 2022, 8n-r / 265-No. and conclusion No. 8 n-z 180 of 2022). The implementation of the obtained research data allows developing methods for early diagnosis, treatment and prediction of organopathology by morphological parameters, improving the quality of life and reducing the number of complications.
The structure and scope of the dissertation. The structure of the dissertation consists of an introduction, three chapters, a conclusion and a list of references. The volume of the dissertation was 103 pages.
A pre-clinical study of the general toxicity of the medication “Fitin-S” has shown that it is referred to class IV of low toxic compounds. The medication “Fitin-S” does not have aaccumulative and local irritant action. At multiple intramuscular administration to rats and rabbits it does not influence the behavior and the dynamics of animals growth, does not cause a toxic effect on the composition of peripheral blood, kidneys’ and liver’s function as well as on the pathomorphology of animals organs and tissues. There is a slowdown in the process of blood coagulation in rabbits at doses of 16 and 32 mg/kg during the whole study period. In 1 month of a recovery period all the indicators have been changing within physiological norm. All the aforementioned data allows us to make a conclusion that the medication does not cause a toxic effect on the organism of animals.
The experiments were carried out on male white rats weighing 150-170 g. The first experimental group of animals was daily intragastrically injected with Mauric (2.8 mg / kg) for 30 days. The second experimental group of animals received heliotrin (5 mg / kg) according to the scheme. The control group of animals was injected with sterile saline. The spleen and mesenteric lymph nodes were examined using morphometric and electron microscopic methods.In the dynamics of chronic intoxication, a suppressive effect of xenobiotics (heliotrin and fosalon) on the T-dependent zones of the organs of immunogenesis was noted, which manifests itself as an increase in destructive processes with a decrease in the pool of proliferating cells.
Chronic intoxication leads to disturbances in the processes of immunogenesis in the body, one of the manifestations of which is structural and functional changes in the T- dependent zones of the peripheral organs of immunity.