Перегляд за Автор "Vynnyk, Nataliia I."
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Документ Mineralization of teeth enamel after eruption(ALUNA Publishing House, 2021) Kostyrenko, Oleksij P.; Vynnyk, Nataliia I.; Koptev, Mykhailo M.; Hasiuk, Petro A.; Skrypnyk, Maksym I.; Bilous, Alevtyna M.; Proskurnya, Serhii A.; Костиренко, Олексій Петрович; Винник, Наталія Іванівна; Коптев, Михайло Миколайович; Гасюк, Петро Анатолійович; Скрипник, Максим Ігорович; Білоус, Алевтина Миколаївна; Проскурня, Сергій АнатолійовичThe aim: The paper was aimed at the study of the processes of mineralization of the enamel of the permanent tooth after its eruption. Materials and methods: To study the structure of the enamel of permanent teeth has been carried out using light and electron microscopy. The study of the process of the development of the primordia of the permanent teeth involved 10 culled puppies of 30-40 days of age. Microscopic, electron microscopic, immunohistochemical methods of research have been used to study the processes of histogenesis. Results: The studies show that in the postnatal period, the formation of the crown, externally covered with cuticular epithelium, marks the formation of the primordium of the permanent tooth at the follicle stage. After eruption of a tooth, different parts of its crown have three individual structural and functional barriers to enamel biomineralization. The frst one is provided by the cuticular epithelium of the pitted areas of the crown, which ensures fltering of the salivary fluid from the protein deposit in the form of a pellicle. The second barrier is defned on the lateral and cuspidate surfaces of the enamel, where the cuticle is erased or poorly expressed. The third structural and functional barrier of enamel biomineralization is located in the cervical portion of teeth of different classes. Conclusions: Different areas of the enamel in the tooth crown have specifc fltration barriers, which can be distinguished as follows: pit-and-fssure-and-groove, cuspidateand-approximal, and cervical barriers. The cuticle is poorly expressed or totally absent on the cusps of the tooth crowns in contrast to pitted areas.Документ The Degree of Pineal Gland Calcification in the Aged People is Associated with Changes in the Internal Structure(Ectodermal Dysplasia Group Turkey, 2021-07) Starchenko, Ivan I.; Grinko, Ruslana M.; Shkodina, Anastasiia D.; Filenko, Borys M.; Vynnyk, Nataliia I.; Roiko, Nataliia V.; Proskurnya, Serhiy A.; Sovhyria, Svitlana M.; Cherniak, Valentyna V.; Babenko, Victoriia I.; Старченко, Іван Іванович; Грінько, Руслана Миколаївна; Шкодіна, Анастасія Дмитрівна; Филенко, Борис Миколайович; Винник, Наталія Іванівна; Ройко, Наталія Віталіївна; Проскурня, Сергій Анатолійович; Совгиря, Світлана Миколаївна; Черняк, Валентина Володимирівна; Бабенко, Вікторія ІгорівнаThe question of the staged accumulation of brain sand in different parts of the pineal gland and the associated changes in cell composition and blood vessels in the elderly and senile people is not definitively studied. Our pilot study included 16 samples of the human pineal glands of the elderly and senile that were divided according to the degree of calcification into 2 groups. In order to objectify the data obtained on micropreparations in each group the morphometric parameters were determined. The degree of calcification of the pineal gland in the elderly and senile is associated with the topography of the inclusions of the brain sand and changes in blood vessels. Increased degree of calcification is accompanied by changes in internal structure of pineal gland which indicate involutional processes.Документ The use of immunohistochemical methods in the study of morphofunctional features of the human paranasal sinuses: literature review(AlunaPublishing House, 2018) Koptev, Mykhailo M.; Vynnyk, Nataliia I.; Kokovska, Oksana V.; Pronina, Olena М.; Bilash, Serhii М.; Коптев, Михайло Миколайович; Винник, Наталія Іванівна; Коковська, Оксана Валеріївна; Проніна, Олена Миколаївна; Білаш, Сергій МихайловичIntroduction:Chronic inflammatory diseases of the mucous membrane of the nose, paranasal sinuses, and pharynx are the most widespread pathology of the upper airways. The thorough study of the features of the organization of local immune protection of the mucous membrane of the paranasal sinuses is crucial for the deep understanding of the causes of the onset and development of this and other pathologies of the paranasal sinuses, the choice of methods of diagnostics and treatment. Consequently, immunohistochemical studies are of great potential and have become preferable for great number of researchers.