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Journal ArticleDOI

Collateral blood vessels in acute ischaemic stroke: a potential therapeutic target

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TLDR
Imaging of the brain and vessels has shown that collateral flow can sustain brain tissue for hours after the occlusion of major arteries to the brain, and the augmentation or maintenance of collateral flow is therefore a potential therapeutic target.
Abstract
Summary Ischaemic stroke results from acute arterial occlusion leading to focal hypoperfusion. Thrombolysis is the only proven treatment. Advanced neuroimaging techniques allow a detailed assessment of the cerebral circulation in patients with acute stroke, and provide information about the status of collateral vessels and collateral blood flow, which could attenuate the effects of arterial occlusion. Imaging of the brain and vessels has shown that collateral flow can sustain brain tissue for hours after the occlusion of major arteries to the brain, and the augmentation or maintenance of collateral flow is therefore a potential therapeutic target. Several interventions that might augment collateral blood flow are being investigated.

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Citations
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Journal ArticleDOI

Pathogenic mechanisms following ischemic stroke

TL;DR: The underlying pathophysiology of ischemic stroke is reviewed and the intertwined pathways that are promising therapeutic targets are revealed, leading to the development of numerous agents that target various injury pathways.
Journal ArticleDOI

Hemorrhagic Transformation after Ischemic Stroke in Animals and Humans

TL;DR: Though remarkable advances in understanding of HT have been made, additional efforts are needed to translate these discoveries to the clinic and reduce the impact of HT on patients with ischemic stroke.
Journal ArticleDOI

Vascular remodeling after ischemic stroke: mechanisms and therapeutic potentials.

TL;DR: In this paper, the early phase of cerebral blood volume (CBV) increase is likely due to the improvement in collateral flow, also known as arteriogenesis, whereas the late phase of CBV increase is attributed to the surge of angiogenesis.
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Blood Flow Distribution in Cerebral Arteries

TL;DR: A new method is described to outline the flow profile of the cerebral vascular tree, including reference values, and should be used for grading the collateral flow system.
References
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Journal ArticleDOI

The Physiological Significance of the Time-to-Maximum (Tmax) Parameter in Perfusion MRI

TL;DR: It is shown that its physiological interpretation is complex and affected by experimental conditions, and special care should be taken when setting-up Tmax thresholds for data acquired with different protocols because various factors can influence the measured Tmax.
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Effect of stimulation of the sphenopalatine ganglion on cortical blood flow in the rat.

TL;DR: It is concluded that the cholinergic (and vasoactive intestinal polypeptidergic) innervation of the cerebral blood vessels, arising from the sphenopalatine ganglion has significant vasomotor potential and that this system may be of functional importance.
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Vascular Endothelial Growth Factor-A Specifies Formation of Native Collaterals and Regulates Collateral Growth in Ischemia

TL;DR: The findings indicate VEGF and VEGFR-1 are determinants of arteriogenesis and describe the first signaling molecule, V EGF-A, that specifies formation of native collaterals in healthy tissues.
Journal ArticleDOI

Hypervolemic hemodilution treatment of acute stroke. Results of a randomized multicenter trial using pentastarch. The Hemodilution in Stroke Study Group.

Lippincott Williams Wilkins
- 01 Mar 1989 - 
TL;DR: Patients with acute ischemic stroke were randomized less than 24 hours after onset to standard (S) therapy or to hypervolemic hemodilution (HH) with pentastarch, and the following subgroups of HH patients showed better overall improvement in neurologic scores: patients entered within 12 hours after stroke onset, Patients with a 15% decrease in hematocrit, and patients with a 10% increase in cardiac output.
Journal ArticleDOI

Regulation of cerebral blood flow in mammals during chronic hypoxia: a matter of balance.

TL;DR: The extent and mechanisms by which hypoxia regulates cerebral blood flow (CBF) are examined are examined, with particular focus on the marked influence of Hypoxia associated with exposure to high altitude and chronic lung disease.
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