Pathology of mitochondria in MELAS syndrome: an ultrastructural study
| Autor: | Paulina Felczak, Eliza Lewandowska, Iwona Stępniak, Monika Ołdak, Agnieszka Pollak, Urszula Lechowicz, Elżbieta Pasennik, Tomasz Stępień, Teresa Wierzba-Bobrowicz |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: | |
| Zdroj: | Polish Journal of Pathology, Vol 68, Iss 2, Pp 173-181 (2017) |
| Druh dokumentu: | article |
| ISSN: | 1233-9687 2084-9869 |
| DOI: | 10.5114/pjp.2017.65021 |
| Popis: | Ultrastructural changes in skeletal muscle biopsy in a 24-year-old female patient with clinically suspected mitochondrial encephalomyopathy lactic acidosis and stroke-like episodes (MELAS) syndrome are presented. We observed proliferation and/or pleomorphism of mitochondria in skeletal muscle and smooth muscle cells of arterioles, as well as in pericytes of capillaries. Paracrystalline inclusions were found only in damaged mitochondria of skeletal muscle. Genetic testing revealed a point mutation in A3243G tRNALeu(UUR) typical for MELAS syndrome. We conclude that differentiated pathological changes of mitochondria in the studied types of cells may be associated with the different energy requirements of these cells. |
| Databáze: | Directory of Open Access Journals |
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