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Экспрессия LYVE-1 в эндотелии вновь образованных сосудов атеросклеротической бляшки каротидного синуса

LYVE-1 expression in the endothelium of newly formed vessels of carotid atherosclerotic plaque
Authors: Tatiana S. Gulevskaya; N Evdokimenko Anna; S Gulevskaya Tatiana; N Kulichenkova Ksenia; Ksenia N. Kulichenkova; A N Evdokimenko;

Экспрессия LYVE-1 в эндотелии вновь образованных сосудов атеросклеротической бляшки каротидного синуса

Abstract

Введение. С открытием специфических маркеров лимфатического эндотелия, одним из которых является LYVE-1, значительно улучшилось представление о структуре и функции лимфатической системы. Установлено, что при атеросклерозе она регулирует иммунные ответы, обратный транспорт холестерина и воспаление. LYVE-1 играет немаловажную роль в реализации функции лимфатической системы, а также является одним из первых маркеров начала лимфангиогенеза. Морфологические исследования лимфатических сосудов в атеросклеротических бляшках (АСБ) человека немногочисленны, а полученные данные противоречивы. Цель — охарактеризовать экспрессию рецептора LYVE-1 в эндотелии вновь образованных сосудов АСБ каротидного синуса (КС) и оценить ее взаимосвязь со структурой бляшки. Материалы и методы. Проведено гистологическое и иммуногистохимическое исследование 34 АСБ КС, полученных при каротидной эндартерэктомии. Оценивали плотность расположения LYVE-1+-сосудов в 1 см2 АСБ, сочетанную экспрессию LYVE-1 и CD34, объемную долю атероматоза и кальцификатов, а также степень выраженности пылевидного обызвествления, кровоизлияний, общей макрофагальной реакции (CD68+) и инфильтрации АСБ М2-фракцией макрофагов (CD206+). Результаты. LYVE-1+-сосуды выявлены в 32 АСБ КС, их количество составило 5,7–1698 (37,4 [15,3; 76]) в 1 см2 бляшки. Экспрессия маркера была неоднородна: наблюдалась во всех или только в отдельных эндотелиоцитах вновь образованного сосуда, интенсивность экспрессии варьировала от слабой до выраженной. Отмечены сосуды фенотипа как CD34+LYVE-1+, так и CD34+LYVE-1–. Взаимосвязи экспрессии LYVE-1 в эндотелии со структурой или типом бляшки не выявлено, за исключением макрофагальной реакции. Плотность расположения LYVE-1+- сосудов в АСБ коррелировала слабо с общей макрофагальной реакцией (r = 0,37; р = 0,03), более значимо — с количеством противовоспалительных М2-макрофагов (r = 0,47; р = 0,005), в особенности это касалось сосудов с умеренной и выраженной интенсивностью экспрессии маркера (r = 0,56; р = 0,0006). Заключение. Впервые продемонстрирована сочетанная экспрессия LYVE-1 и CD34 в эндотелии сосудов АСБ, а также показана возможная связь экспрессии LYVE-1 в эндотелии вновь образованных сосудов с репаративными процессами в АСБ. Introduction. The discovery of specific markers of lymphatic endothelium, including LYVE-1, has led to a much better understanding of the structure and function of the lymphatic system. It has been shown that lymphatic system regulates immune responses, reverse cholesterol transport, and inflammation in atherosclerosis. LYVE-1 plays an important role in activating the function of the lymphatic system and is also one of the first markers of lymphangiogenesis. There are few morphological studies of lymphatic vessels in atherosclerotic plaques, and the obtained data are contradictory. The aim of the study was to characterize the LYVE-1 receptor expression in the endothelium of newly formed vessels in carotid atherosclerotic plaques and to evaluate its relationship with the plaque structure. Materials and methods. 34 carotid atherosclerotic plaques obtained during carotid endarterectomies were investigated using histological and immunohistochemical techniques. The density of LYVE-1+ vessels per 1 cm2 of plaque, combined expression of LYVE-1 and CD34, proportion of atheromatosis and calcifications, as well as severity of dust-like calcification, haemorrhage, overall macrophage response (CD68+), and plaque infiltration by M2 macrophage (CD206+) were evaluated. Results. LYVE-1+ vessels were detected in 32 carotid atherosclerotic plaques, with a range of 5.7–1698 per 1 cm2 of the plaque (37.4 [15.3; 76]). Marker expression was heterogeneous: it was observed in all or only some endothelial cells of the newly formed vessel, and the expression intensity varied from weak to strong. Both CD34+LYVE-1+ and CD34+LYVE-1– vessel phenotypes were identified. A relationship between endothelial LYVE-1 expression and the structure or type of plaque was not established, except for the macrophage response. The density of LYVE-1+ vessels in atherosclerotic plaques correlated weakly with the overall macrophage response (r = 0.37; p = 0.03), more significantly with the number of anti-inflammatory M2 macrophages (r = 0.47; p = 0.005), especially for vessels with moderate and strong marker expression (r = 0.56; p = 0.0006). Conclusion. The combined expression of LYVE-1 and CD34 in the endothelium of plaque neovessels was demonstrated for the first time, and a possible association between endothelial LYVE-1 expression in newly formed vessels and the reparative processes in atherosclerotic plaques was shown. «ANNALS OF CLINICAL AND EXPERIMENTAL NEUROLOGY», Том 14, № 3 (2020)

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Keywords

лимфангиогенез, cd206, неоваскуляризация, Neurosciences. Biological psychiatry. Neuropsychiatry, lyve-1, lymphangiogenesis, m2 macrophages, CD206, М2-макрофаги, carotid atherosclerotic plaque, M2 macrophages, атеросклеротическая бляшка каротидного синуса, neovascularization, LYVE-1, RC321-571

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
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