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• W1988484993 abstract "We evaluated color-coded pulsed Doppler ultrasound imaging for the assessment of intracranial blood flow in two models of cerebral ischemia in 7-day-old (P7) rats. Blood-flow velocities (BFVs) were measured in the internal carotid arteries and basilar trunk upstream from the circle of Willis, and in the posterior cerebral arteries downstream (1) before, (2) during left middle cerebral artery electrocoagulation and 50 min-transient either one (I/R-1) or both (I/R-2) common carotid (CCA) arteries occlusion, and (3) after release of CCA(s) occlusion. At 48 h after ischemia 41–48% (I/R-1 model) and 24% (I/R-2 model) of rats did not present a lesion. Those rats displayed increased mean BFV in both right internal carotid artery and basilar trunk in I/R-1 model, and increased mean BFV in the basilar trunk (BT) in I/R-2 model. In contrast, no significant changes in mean BFV were observed in lesioned rats. Furthermore, mean BFV in the BT was inversely correlated to the size of the lesion (r2 = 0.75, p < 0.0001) in the I/R-2 model. Thus, we demonstrated the protective role of collateral support in P7 rodents. Ultrasound imaging can evidence the establishment or not of the cerebral collateral recruitment, leading to the presence or absence of a lesion. This novel approach should greatly help preclinical studies to reduce animal variability." @default.
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• W1988484993 date "2011-05-01" @default.
• W1988484993 modified "2023-10-18" @default.
• W1988484993 title "Impact of intracranial blood-flow redistribution on stroke size during ischemia–reperfusion in 7-day-old rats" @default.
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• W1988484993 doi "https://doi.org/10.1016/j.jneumeth.2011.02.030" @default.
• W1988484993 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/21420433" @default.
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