The data on histological studies of organs of suckling piglets that died from Aujeszky's disease presented in the article. To study of the microscopic changes, organ and tissue samples were taken from 5 suckling pigs (aged 4 to 6 days old). In all piglets, the diagnosis was confirmed by polymerase chain reaction. For histological studies, tissue samples were taken from the following organs: lungs, stomach, intestines, liver, pancreas, kidneys, thymus, lymph nodes, spleen, brain and spinal cord. The studies established that as a result of the Aujeszky’s disease virus impact on various organs and tissues, in dead pigs, significant pathomorphological changes are observed in most parenchymal organs. As a result of the histological studies of the internal organs of the pigs, died due to Aujeszky's disease the presence of significant microscopic changes in all morphological formations of these organs were found. It was described a number of micromorphological signs of piglets pathological changes and a set of criteria that can be used to substantiate a postmortem diagnosis of this disease was identified.
Представлено результати гістологічних досліджень печінки котів, які загинули від каліцивірусної інфекції. Встановлено виразні запальні зміни, що характеризувалися розширенням і переповненням кров’ю кровоносних судин, запальним набряком паренхіми органа та її інфільтрацією клітинами запалення. Такі зміни супроводжувалися дистрофією й некрозом частини гепатоцитів. Під капсулою печінки реєструвались осередки некрозу гепатоцитів, які не мали чітких меж. Некроз печінкових клітин характеризувався каріолізисом. The results of histological studies of liver of cats that died from kalitsyvirusnoyi infection. Found distinct inflammatory changes characterized by expansion and overflow with blood blood vessels, inflammation of the parenchyma of organs and infiltration of inflammatory cells. These changes were accompanied by degeneration and necrosis of hepatocytes. In the liver capsule registered cell necrosis of hepatocytes, which did not have clear boundaries. Necrosis of liver cellscharacterized kariolisis.
The article presents data on histopathological studies of the kidneys of cows, which either recovered or died from leptospirosis. Fragments of seven kidneys from slaughtered cows, positive for Leptospira antibodies in the microscopic agglutination test (MAT) (titres of 50 and higher) were used in the study. The MAT was conducted with eight serological groups of Leptospira: Canicola, Grippotyphosa, Hebdomadis, Icterohaemorrhagiae, Pomona, Sejroe, Tarassovi, and Australis. Microscopic changes in all morphological structures of the kidneys were presented. Micromorphological criteria, which can be used for post-mortem diagnosis of leptospirosis were established. They included: serous glomerulonephritis with granular dystrophy of podocytes, necrosis and collapse of the inner layer of Bowman's capsule, partial destruction of capsule and vascular glomeruli, granular and vacuolar degeneration and destruction of tubular epithelial cells, foci of interstitial oedema, and infiltrations predominantly with monocytes and isolated neutrophils. Microscopic changes in the kidneys suggest that the cows died from leptospirosis as a result of toxic shock syndrome.
Представлено результати гістологічних дослі-джень нирок і міокарду курей, які загинули від інфек-ційного ларинготрахеїту. Встановлено, що в нирках реєструються розлади кровообігу в вигляді розши-рення та переповнення кров’ю кровоносних судин строми органа, екстракапілярний серозний гломеру-лонефрит і дистрофічні зміни та руйнування епіте-лію канальців. У міокарді провідною патологією була зерниста дистрофія м’язових клітин. Окрім того реєструвалися фрагментація та дезорієнтація м’язових волокон. У епікарді та ендокарді мікроско-пічних змін не було. The results of histological studies of kidneys and myocardium of chickens that died of infectious laryngotracheitis have been shown. It was found that circulatory disorders in the form of expansion and overflow of blood with blood vessels of body stroma, extra serosal capillary glomerulonephritis and degenerative changes and destruction of epithelial tubules are registered in the kidneys. In the myocardium the leading pathology was granular dystrophy of muscle cells. In addition, fragmentation and disorientation of muscle fibers was registered. In the epicardium and endocardium there were no microscopic changes.
Б. В. БОРИСЕВИЧ, доктор ветеринарних наук, професор Національний університет біоресурсів і природокористування України В. Г. СПИРИДОНОВ, доктор сільськогосподарських наук, старший науковий співробітник Інститут ветеринарної медицини НААН
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