Навчально-науковий медичний інститут (НН МІ)
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Item The features of p53 and Ki-67 expression during Gleason's grade increase in prostate cancer(Springer, 2019) Линдін, Микола Сергійович; Лындин, Николай Сергеевич; Lyndin, Mykola Serhiiovych; Піддубний, Артем Михайлович; Поддубный, Артем Михайлович; Piddubnyi, Artem Mykhailovych; Сікора, Владислав Володимирович; Сикора, Владислав Владимирович; Sikora, Vladyslav Volodymyrovych; Романюк, Оксана Костянтинівна; Романюк, Оксана Константиновна; Romaniuk, Oksana Kostiantynivna; Kravtsova, Olha Ivanivna; Романюк, Анатолій Миколайович; Романюк, Анатолий Николаевич; Romaniuk, Anatolii Mykolaiovych; Кравцова, Ольга Іванівна; Кравцова, Ольга ИвановнаBackground & Objectives: Prostate cancer is the most common malignant tumour of the male reproductive organs. Its course depends on the histological and immunohistochemical characteristics of neoplasias. In view of this, the purpose of study was to investigate the influences of prostate cancer differentiation on peculiarities of Ki-67 and p53 expression.Item Prostate cancer leads to a change in the composition of tissue carbohydrates(Springer, 2019) Романюк, Анатолій Миколайович; Романюк, Анатолий Николаевич; Romaniuk, Anatolii Mykolaiovych; Піддубний, Артем Михайлович; Поддубный, Артем Михайлович; Piddubnyi, Artem Mykhailovych; Линдін, Микола Сергійович; Лындин, Николай Сергеевич; Lyndin, Mykola Serhiiovych; Сікора, Владислав Володимирович; Сикора, Владислав Владимирович; Sikora, Vladyslav Volodymyrovych; Гирявенко, Наталія Іванівна; Гирявенко, Наталья Ивановна; Hyriavenko, Nataliia Ivanivna; Москаленко, Роман Андрійович; Москаленко, Роман Андреевич; Moskalenko, Roman AndriiovychThe objective of the investigation is following - to study the changes in the composition of the carbohydrate components of prostate cancer tissue (PCa). Methods: 60 PCa samples (30 samples of PCa with intraluminal inclusions (prostatic calculi and corpora amylacea) and 30 without them) were used for study. 20 samples of benign prostatic hyperplasia tissue were used as control. All samples were examined by hematoxylin-eosin staining and by histochemistry (PAS reaction, alcian blue staining at pH 2.5). Results: Positive PAS staining was found both in the tissue of the prostate gland and in the secret. Strongest intensity of the signal was found in glands filled by secret. Corpora amylacea and the secret of the PCa glands were PAS-negative. BPH tissue had a weak alcian blue staining intensity. The secret of PCa glands was very positive for alcian blue staining. We indicate the presence of higher amount of acid mucopolysaccharides in the connective tissue component of PCa. Conclusion: Changes in the carbohydrate composition of the prostate tissue during carcinogenesis were found. It manifests in reduced amount of glycosaminoglycans and increased amount of acid mucopolysaccharides in both the secret of the glands and the tumour tissue.Item Osteonectin overexpression in the case of prostate cancer with intraluminal inclusions(Virchows Archiv, 2018) Піддубний, Артем Михайлович; Поддубный, Артем Михайлович; Piddubnyi, Artem Mykhailovych; Москаленко, Роман Андрійович; Москаленко, Роман Андреевич; Moskalenko, Roman Andriiovych; Radomychelski, I.-M.; Линдін, Микола Сергійович; Лындин, Николай Сергеевич; Lyndin, Mykola Serhiiovych; Сікора, Владислав Володимирович; Сикора, Владислав Владимирович; Sikora, Vladyslav Volodymyrovych; Романюк, Анатолій Миколайович; Романюк, Анатолий Николаевич; Romaniuk, Anatolii MykolaiovychOsteonectin (OSN) is secreted by osteoblasts during bone formation, initiating mineralization and promoting mineral crystal formation at sites of ectopic calcification. Also OSN was found in many types of human malignant tumours. The aim is to study the OSN expression in patients with prostate cancer (PC) and the presence of intraluminal inclusions (prostatolithes and amyloid cells). Method: OSN expression was investigated in tumours and in the adjacent prostatic tissue of 30 PCs with intraluminal inclusions and 30 PCs without them by immunohistochemistry. In each group 15 samples refer to moderately differentiated G2 and low-differentiated G3 tumours. Samples were fixed, embedded in paraffin, and analized for OSN accumulation using the anti-OSN antibody, followed by DAB detection substrate and counterstained with Mayer’s haematoxylin. Results: OSN expression was increased in PC tissues with pathological inclusions in comparison to those without them (p<0.001, Student test). Osteonectin was mostly localized in tumour cells cytoplasm, its expression was not observed in tumour microangiourea cells and in stroma. It was found that the OSN expression by tumour cells reduced during reduction of the malignant tumour differentiation (comparison of subgroups G2 and G3) (p<0.001 and p<0.01 respectively for groups I and II). Conclusion: OSN overexpression in tumours and in the adjacent prostatic tissue of PCs with intraluminal inclusions may be regarded as a prospective role for the osteosteogenic phenotype development of tumour cells and for the bone metastasis promotion.