МІКРОСКОПІЧНІ ЗМІНИ В ЛЕГЕНЯХ І СЕРЦІ СОБАК, ЩО ЗАГИНУЛИ ЗА ДИРОФІЛЯРІОЗУ, СПРИЧИНЕНОГО DIROFILARIA IMMITIS

Dirofilariosis – invasive parasitic disease which can be fatal. Specific course of the disease is the lack of visible signs of the disease at an early stage and make the complexity of diagnosing the disease is especially dangerous, as pet owners may not be aware of what their favorite animal is ill. Until now, according to statistics, dirofilariosis diagnosed by chance during examination before surgery, or carrying out tests for reasons far from suspected dirofilariosis.Dirofilariosis registered in Africa, Asia and Southern Europe. In the United States established endemic areas where there have been outbreaks of helminthiasis annually. The cases were registered in the UK, Sweden, the Netherlands, Austria, Hungary, Bulgaria, Romania, Germany, Poland, Russia, Kazakhstan, the republics of the North Caucasus. Now dirofilariosis observed in Kiev, Odessa, Kharkiv, Kyiv, Chernihiv, Sumy, Poltava, Kharkiv and other areas. Today dirofilariosis carnivores and man registered on the territory of 37 states.Numerous published data indicate that most dirofilariosis in the countries of the former Soviet Union caused by two pathogen – Dirofilaria immitis and Dirofilaria repens.D. repens parasite in the subcutaneous tissue. Another kind of – D. immitis – in the heart, the lungs, the pulmonary artery and other vessels carnivores. Sometimes these nematodes parasitize in unusual places (the brain, the bronchioles, the abdominal cavity, eyes).Dirofilariosis problem for Ukraine is very urgent, because, firstly, the disease among dogs acquires the character of enzootic, secondly, the increase in the number of different types of vectors of infection, in the third, increasing the area of distribution – from the tropics to temperate regions, in the fourth, the difficulties in diagnosis disease and, fifthly, there is lack of training and educational and propaganda work among the population.The aim of our research was to a deeper and more complete definition of the features of microscopic changes in dog heartworm.We used the results of histological examination of samples of pathological material taken from 6 different breeds of dogs that suffered from heartworm. Autopsy was performed by the method of partial evisceration. Microscopic studies were carried out according to conventional techniques.In carrying out investigations following changes were microscopically established: in the lungs – seen interstitial pneumonia, venous hyperemia, hemorrhage, and also discovered microfilariae in the lumen of blood vessels and interstitial tissue. In the myocardium – granular and fatty degeneration, necrosis and destruction of cardiomyocytes in blood vessels – single microfilariae.