Наше дослідження стосується тривалого впливу налбуфіну (опіоїду) на стан ендотеліоцитів судин гемомікроциркуляторного русла ободової кишки на субмікроскопічному рівні. Результати експериментального дослідження свідчать, що тривалий вплив опіоїду призводить до дезорганізації ендотеліоцитів на субмікроскопічному рівні вже через 2 тижні експерименту і наростають впродовж наступних термінів дослідження. Зокрема, виявляли збільшені, неправильної форми ядра ендотеліоцитів, набряк цитоплазми з пошкодженими органелами, базальна мембрана була потовщена, що є підгрунтям для погіршення кровопостачання досліджуваного органу та розвитку кишкової патології.
Ключові слова: ендотеліоцити, ультраструктура, ободова кишка, налбуфін, експеримент.
Abstract. The research is about the prolonged exposure to the nalbuphine (opioid) on the endotheliоcytes of the vessels of the haemomicrocirculatory bed of colon at the submicroscopic level. The results of the investigation show that the prolonged opioids exposure leads to disorganization of endotheliocytes at the submicroscopic level already after 2 weeks of the experiment and grew over the next periods of the investigation. Specifically, we observed enlarged, irregularly shaped of endotheliocytes nuclei, their cytoplasm swollen and organelles are damaged in it, the basement membrane thickened, that plays an important role in the interruption of the blood supply to examined organ and development of intestinal pathology.
Key words: endotheliocytes, ultrastructure, colon, nalbuphine, experiment.

Invitation to take part in "Global", "International", and "Worldwide" conferences seem attractive and prestigious and often with affiliation in Europe, USA, Japan or other well-developed Asia countries. Moreover, the possibility of sharing a stage with a "top speaker" and/or eligibility for reduced registration and accommodation fees and being listed in the abstract book on the "international" level might be a hook not only for young researchers but even for experienced ones. A broad range of submissions, low processing fees, increasing authors' citations, high "local" impact factor, an invitation to write an article for money, "gift-authorship”, suboptimal author guidelines or special offers.

The article investigates the historical significance of Lviv, a longstanding intellectual center in Eastern Europe, particularly as the former capital of the Kingdom of Galicia and Lodomeria. Despite its academic prominence, especially in anatomical sciences, there is a notable gap in international research concerning the University of Lviv and figures like Henryk Karol Klemens Kadyi (1851–1912), a key anatomist and university rector (1898–1899). The study provides an overview of Lviv University’s history and explores Kadyi’s academic impact, emphasizing his crucial role in re-establishing the Medical Faculty in 1894. Kadyi’s contributions to anatomical sciences and his role in shaping Lviv’s medical education are highlighted. Despite his significance, Kadyi remains understudied in international historical research, prompting the authors to initiate a collaborative international project to delve into various aspects of his professional life and his influence on the medical field in the Habsburg Monarchy between the late 19th and early 20th century.