Human retinal photoreceptor cells in glaucoma: destructive changes of mithochondria and mitophagy

Poster (download) Natalia Obanina1, Nataliya Bgatova2, Valerii Chernykh3, Aleksandr Trunov4, Alena Eremina5, Vladimir Konenkov61Laboratory of ultrastructural research, Research Institute of Clinical and Experimental Lymphology – Branch of the Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences; Section of cytology and genetics, Department of Natural Sciences, Novosibirsk State University, n.obanina@g.nsu.ru2Laboratory of ultrastructural research, Research Institute of Clinical and Experimental Lymphology – Branch of the Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, n_bgatova@ngs.ru3The academician S.N. Fyodorov Federal State Institution “Intersectoral Research and Technology Complex “Eye Microsurgery”, Ministry of Healthcare of Russian Federation, Novosibirsk Branch, rimma@mntk.nsk.ru4The academician S.N. Fyodorov Federal State Institution “Intersectoral Research and Technology Complex “Eye Microsurgery”, Ministry of Healthcare of Russian Federation, Novosibirsk Branch, trunov1963@yandex.ru5The academician S.N. Fyodorov Federal State Institution “Intersectoral Research and Technology Complex “Eye Microsurgery”, Ministry of Healthcare of Russian Federation, sci@mntk.nsk.ru6Research Institute of Clinical and Experimental Lymphology – Branch of the Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, vikonenkov@gmail.com The leading place in the development of low vision and blindness worldwide is occupied by glaucoma. This disease is non-infectious in nature, accompanied by an increase in intraocular pressure and degeneration of neurons of the retina, optic nerve, as well as its spread in the central part of the visual analyzer. The aim of the study was to identify the characteristics of the ultrastructure of human retinal photoreceptor cells in glaucoma. The study was carried out using transmission electron microscopy and morphometry. The volume densities (VV) of mitochondria and autophagosomes containing mitochondria were determined. Disorders of orientation and swelling of the membrane discs of rod neurons in the outer segments were revealed. It is shown that sticks are more prone to destructive changes than cones.

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