1999
DOI: 10.1016/s0006-8993(99)01845-4
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Evaluation of lipid peroxidation, cathepsin L and acid phosphatase activities in experimental brain ischemia–reperfusion

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Cited by 29 publications
(16 citation statements)
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“…This enzyme liberates the unsaturated fatty acid arachidonic acid and thus initiates the formation of free radicals via the cyclooxygenase and lipoxygenase pathways, causing lipid peroxidation of subcellular membranes [10] . lekel H et al observed that severe ischemia reperfusion caused lipid peroxidation in cellular membranes and disruption of lysosomal membranes [11] . It has been proposed that the rise of intracellular calcium during ischemia activates μ-calpain located at the lysosomal membranes which breaks down lysosomal membranes releasing cathepsin B and L into the cytoplasm, causing degradation of cellular components [12] .…”
Section: Mechanism Of Lysosomal Leakagementioning
confidence: 99%
“…This enzyme liberates the unsaturated fatty acid arachidonic acid and thus initiates the formation of free radicals via the cyclooxygenase and lipoxygenase pathways, causing lipid peroxidation of subcellular membranes [10] . lekel H et al observed that severe ischemia reperfusion caused lipid peroxidation in cellular membranes and disruption of lysosomal membranes [11] . It has been proposed that the rise of intracellular calcium during ischemia activates μ-calpain located at the lysosomal membranes which breaks down lysosomal membranes releasing cathepsin B and L into the cytoplasm, causing degradation of cellular components [12] .…”
Section: Mechanism Of Lysosomal Leakagementioning
confidence: 99%
“…ROS causes oxidation of membrane lipids, essential cellular proteins, and DNA leading to release of proteolytic lysosomal enzymes and mitochondrial matrix enzymes into the cytoplasm ending finally in cellular damage [34].…”
Section: Discussionmentioning
confidence: 99%
“…Em outro estudo, MacMillan também não verificou diferença nas dosagens de MDA em ratos submetidos à cauterização das artérias vertebrais e pinçamento temporário das artérias carótidas (4VO) 32 . Da mesma forma, Islekel e col. 30 ao realizarem isquemia 4VO incompleta, como em nosso experimento, não observaram diferenças na dosagem de MDA entre os grupos simulados e os com isquemia e reperfusão, creditando esse resultado à possível presença de circulação colateral advinda das artérias subclávias 30 . Em estudo realizado em ratos Wistar submetidos à técnica de 4VO, não houve aumento de MDA em períodos de uma ou duas horas de reperfusão, mas quando foi prolongado esse período para além de oito horas verificou-se aumento significativo da dosagem de MDA, principalmente, nas regiões do córtex parietal e do neocórtex 33 .…”
Section: Discussionunclassified