Comparative assessment of different methods of studying skin toxicity of powder for wounds

Abstract

The article provides data on the comparative assessment of the study of acute and subacute dermal toxicity of powder for wounds made based on iodoform by various methods. The research was conducted using the classic method and according to the methodology of the Organization for Economic Cooperation and Development (OECD No. 410). When studying acute skin toxicity using the traditional method, it was established that the drug under study belongs to the IV toxicity class (low-toxic substances) and, when determined by the way according to the UGS (GHS) – to category 5. During long-term dermal application of powder for wounds, no significant changes in hemoglobin concentration, hematocrit value, the average concentration of hemoglobin in erythrocytes (MCHC), the average volume of erythrocytes (MCV), the average content of hemoglobin in erythrocytes (MCH) and several platelets were established by the classical method. In addition, a slight increase in creatinine, urea, and the activity of ALT and AST was established against a slight decrease in the total protein content. When studying the acute toxicity of powder for wounds following the OECD method No. 410, it was confirmed that long-term dermal application of the investigated agent caused a slight increase in the weight coefficients of the liver, heart, and spleen and a probable increase in the weight coefficients of the kidneys against the background of a decrease in the body weight of animals. Also, in animals of all experimental groups, the number of erythrocytes increased by 0.6 %, 5.1 %, and 10.5 % (Р < 0.05), respectively, and the number of leukocytes decreased by 15.9 % (Р < 0.05), 21.8 % (Р < 0.05), 23.4 % (Р < 0.05), mean erythrocyte volume (MCV) by 2.4 %, 4.2 %, 9.2 % (Р < 0,05). When determining the biochemical indicators of blood serum, it was established that using the research product for 28 days caused a slight decrease in the total protein content in animals of the I, II, and III research groups. In addition, the animals of all experimental groups showed an increase in the level of creatinine, respectively, by – 10.6 % (Р < 0.05), 13.3 % (Р < 0.05), 15.4 % (Р < 0.05), urea at – 3.3 %, 7.3 % (Р < 0.05), 12.6 % (Р < 0.05).