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- W2023652532 abstract "We assessed the validity of monitoring changes in mitochondrial membrane potential (ΔΨ) with a fluorescent probe, JC-1 (5,5',6,6'-tetrachloro-1,1',3,3'-tetraethyl benzimidazolo-carbocyanine iodide), for the quantitative evaluation of neonatal hypoxic-ischemic brain injury. Seven-day-old rat pups were subjected to 2h of 8% oxygen following unilateral carotid artery ligation. Brain tissue was obtained for JC-1 staining at 24h after hypoxia ischemia (HI), and the results were compared with those of other simultaneous measurements such as flow cytometry with fluoresceinated annexin V/propidium iodide (PI), terminal deoxynucleotidyltransferase-mediated dUTP nick end-labeling (TUNEL) staining, triphenyl tetrazolium chloride (TTC) infarct area and western blot for cytosolic cytochrome c. Flow cytograms of JC-1 showed two distinct sub-populations with different ΔΨ, red with high ΔΨ and green with low ΔΨ, at 24h after HI. This shift of JC-1 fluorescence from red to green indicated a collapse of ΔΨ. The increased percentage of low ΔΨ with JC-1 showed a significant positive correlation with a simultaneous increase in annexin V(+)/PI(+) necrotic cells, TUNEL-positive cells, TTC infarct area and western blot of cytosolic cytochrome c, and negative correlation with annexin V(-)/PI(-) live cells. In summary, low ΔΨ measured with JC-1 was significantly correlated with results from other methods used to assess the extent of brain damage after HI. Therefore, fluorocytometric analysis of ΔΨ with JC-1 might be a sensitive and reliable technique in the quantitative evaluation of neonatal brain injury." @default.
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- W2023652532 date "2010-11-01" @default.
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- W2023652532 title "Comparative evaluation of hypoxic–ischemic brain injury by flow cytometric analysis of mitochondrial membrane potential with JC-1 in neonatal rats" @default.
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- W2023652532 doi "https://doi.org/10.1016/j.jneumeth.2010.08.020" @default.
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