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- W4322003079 abstract "Gliomas are the most common malignant brain tumors with poor prognosis. The WHO’s classification recognizes isocitrate dehydrogenase 1 (IDH1) mutant astrocytoma and IDH1-wildtype glioblastoma (GBM). The IDH1 mutation confers a survival advantage over the wildtype. There are several explanations for the metabolic advantage of the IDH1 mutation, some involve mitochondrial implications. Since an ultrastructural comparison of both tumor genotypes is still lacking, we surveyed the ultrastructural effects of the IDH1 mutation on the mitochondria of the IDH1-mutant astrocytoma (n = 15) and IDH1-wildtype glioblastoma (n = 15) tumors. Our results show that both IDH1 genotypes have degenerate and uncoupled mitochondria; this has not been reported before. The presence of ample lipid inclusions and lipid droplets in the cytoplasm of both genotypes support our conclusion of dysfunctional uncoupled mitochondria. Thus, the IDH1 mutation may have no ultrastructural consequences on the mitochondria, and the aberrant mitochondria in both genotypes may be the result of other unknown mutations. The status of the mitochondria in these genotypes portends a clinical challenge since tumor cells with uncoupled mitochondria are more primitive, aggressive, and considerably treatment resistant." @default.
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- W4322003079 date "2023-02-25" @default.
- W4322003079 modified "2023-09-26" @default.
- W4322003079 title "Comparative survey of mitochondrial ultrastructure in <i>IDH1</i>-mutant astrocytoma and <i>IDH1</i>-wildtype glioblastoma (GBM)" @default.
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- W4322003079 doi "https://doi.org/10.1080/01913123.2023.2175942" @default.
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