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A clinical case of a mixed testicular tumour with cryptorchidism in a dog of the Yorkshire Terrier breed
(2023) Канівець, Наталія Сергіївна; Коломак, Ігор Олегович; Кравченко, Сергій Олександрович; Дмитренко, Надія Іванівна; Бурда, Тетяна Леонідівна; Kanivets, N. S.; Kolomak, I. O.; Kravchenko, S. O.; Dmytrenko, N. I.; Burda, T. L.
Histological examination of testicular tumours in cryptorchid males allows determining the nature of neoplasia, prognosis of long-term consequences in the form of metastases, and defining the optimal method of treatment of the animal, which determines the relevance of research in this area. The aim of the work is to determine the pathohistological structure of neoplasia of the left, cryptorchid, and morphology of the contralateral testes in a Yorkshire Terrier male with unilateral cryptorchidism. General clinical, ultrasonographic, radiological and histological methods were used in the examination of the animal. The article presents data on a mixed tumour of the intraperitoneal left testis of a 6-year-old Yorkshire Terrier, which is an atypical clinical case. It was found that the characteristic ultrasonographic features of the cryptorchid left testis tumour were numerous isoechoic foci of different diameters (from 4 to 26 mm), hyperechoic septa, and tuberous contours with a hyperechoic capsule. At laparotomy, the altered testis had an uneven surface saturated with blood vessels. The section showed milky-white neoplastic areas separated by fibrous bands that did not correspond to the normal structure of the organ. Histological examination of the parenchyma revealed areas of similar rounded cells in the form of a group of shapeless masses separated by a fibrous barrier. Neoplastic tubules had a developed fibrovascular stroma with an eosinophilic necrotic area. The protein membrane also had numerous fibrous formations. The layers of multifaceted cells were located perpendicular to the basal lamina, often with central necrosis, and the testicular mass contained multifocal haemorrhages. Such signs are characteristic of the lesion of Sertoli cells and interstitial Leydig cells, which indicated a mixed type of tumour of the left extraperitoneal testis of the Yorkshire Terrier. The contralateral right testis was unchanged and corresponded to the natural morphological and histological structure. The prostate was normal on macroscopic and histological examination, which has not been previously reported. Six-month follow-up of the dog showed no signs of metastatic process. The practical significance of the work is to obtain new scientific knowledge about the development of mixed tumours of the testis in cryptorchid males and the prospects for the treatment of diseased animals
DESCRIPTION OF THE NEMATODE DIROFILARIA REPENS (NEMATODA, ONCHOCERCIDAE) PARASITIC IN DOGS IN UKRAINE
(2023) Євстаф’єва, Валентина Олександрівна; Yevstafieva, V. O.; Мельничук, Віталій Васильович; Melnychuk, V. V.; Кравченко, Сергій Олександрович; Kravchenko, S. O.; Киричко, Олена Борисівна; Kyrychko, O. B.; Дмитренко, Надія Іванівна; Dmytrenko, N. I.; Сизоненко, Наталія Миколаївна; Syzonenko, N. M.; Опара, Надія Миколаївна; Opara, N. M.
Dirofi lariasis is a zoonotic disease of domestic and wild carnivorous animals and humans. Subcutaneous migration of the parasite Dirofi laria repens Railliet & Henry, 1911 can lead to the local swellings with changeable localization. In humans, this parasite can cause the damage of lungs, male genitalia, and eyes. Th e range of D. repens is constantly spreading to new areas, and, considering the zoonotic potential of this parasite, it is important to widen the existing data concerning the morphology of D. repens. Present study provides the morphometric description of nematodes D. repens, obtained from subcutaneous tissue of dogs in Ukraine. Th e aim of this study was to make an accent on the key features for performing the identifi cation of parasites of this species. For males, 27 morphometric traits were identifi ed, characterising the total size of the body and the esophagus, the thickness of the cuticle in the region of the mouth opening, the localisation of the nerve ring and the cloaca, the morphological structure and metric parameters of the spicules, and the length of the tail. For females, 18 morphometric traits were identifi ed that, in addition to the common parameters, characterise cuticle thickness in the region of the vulva, localisation of the vulva and anus, body width in the regions of the anus and vulva, and tail length. Th is report widens the existing data on the morphological and metric characteristics of nematodes D. repens
Morphological Characteristics of Parasitic Nematodes Trichuris sylvilagi (Nematoda, Trichuridae)
(2022-06) Yevstafieva, V. O.; Євстаф’єва, Валентина Олександрівна ; Стибель, В.; Melnychuk, V. V.; Мельничук, Віталій Васильович ; Нагорна, Л.; Dmytrenko, N. I.; Дмитренко, Надія Іванівна ; Titarenko, O. V.; Тітаренко, Олена Вікторівна ; Дубова, О.; Makarets, S.; Макарець, Світлана Володимирівна ; Filonenko, S. V.; Філоненко, Сергій Васильович; Pishchalenko, M. A.; Піщаленко, Марина Анатоліївна; Kone, M. S.; Коне, Мохамед Сумана ; Ilchenko, A.; Ільченко, Алла Михайлівна
Pathogenesis and pathomorphology of distraction trauma in the framework of pre-trial investigations of cruelty to animals
(2023) Skrypka, M.; Panikar, I.; Boyko, Yu.; Dmytrenko, N. I.; Kurales, O.; Дмитренко, Надія Іванівна
The importance of identification and differential diagnosis of spinal injuries, in the case of polytrauma, the ability to distinguish the pathogenesis of various injuries are important and relevant both during clinical and during pathological examination of the animal’s body. The purpose of research is to provide veterinary practitioners and lawyers with strategies for identifying the cause (mechanism) of spinal cord injury and to assist triers of fact (decision-makers) in arriving at plausible and reasoned veterinary forensic conclusions. The research was performed using pathological and anatomical dissection and histological studies. It was established that damage to the cervical spinal cord due to traumatic bending of the neck was accompanied by partial or complete rupture of the intervertebral disc and destruction of the ligaments of the vertebrae. It was found that the hyperemia of the vessels of the meninges of the brain is the result of blood circulation disorders in the occipital artery and the caudal artery of the meninges, and mechanical damage to the integrity of the intervertebral discs or the destruction of the ligaments of the neck vertebrae led to various disorders of the innervation of various organs and systems of the body and ended the death of animals. It was proved that the distraction injury of the cervical spine led to the swelling of the medulla of the brain, haemorrhages of the caudalventral part of the brain substance. It was found that irritation of nervus vagus led to hyperemia of vessels of large (aorta and trunk of pulmonary artery) caliber, cranial mesenteric artery) caudal mesenteric artery and, accordingly, hyperemia of thoracic and abdominal organs. Application of research results will help in differentiation of various types of mechanical injuries of the spine (including differentiation from other pathological conditions of the body), determination of the area of the applied force vector
Pathomorphological changes in the large intestine of rabbits parasitised by Passalurus ambiguus (Nematoda, Oxyuridae). Regulatory Mechanisms in Biosystems
(2019) Михайлютенко, Світлана Миколаївна; Kruchynenko, O. V.; Klymenko, O. S.; Serdioucov, J. K.; Dmytrenko, N. I.; Tkachenko, V. V.; Кручиненко, Олег Вікторович; Mykhailiutenko, S. M.; Дмитренко, Надія Іванівна

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