The DOI matches its Crossref record; 91 of the 91 references it cites were found in a registry or an index.
Astrocyte Regulation of Blood Flow in the Brain
Open accessAbstract
Neuronal activity results in increased blood flow in the brain, a response named functional hyperemia. Astrocytes play an important role in mediating this response. Neurotransmitters released from active neurons evoke Ca(2+) increases in astrocytes, leading to the release of vasoactive metabolites of arachidonic acid from astrocyte endfeet onto blood vessels. Synthesis of prostaglandin E2 (PGE2) and epoxyeicosatrienoic acids (EETs) dilate blood vessels, whereas 20-hydroxyeicosatetraenoic acid (20-HETE) constricts vessels. The release of K(+) from astrocyte endfeet may also contribute to vasodilation. Oxygen modulates astrocyte regulation of blood flow. Under normoxic conditions, astrocytic Ca(2+) signaling results in vasodilation, whereas under hyperoxic conditions, vasoconstriction is favored. Astrocytes also contribute to the generation of vascular tone. Tonic release of both 20-HETE and ATP from astrocytes constricts vascular smooth muscle cells, generating vessel tone. Under pathological conditions, including Alzheimer's disease and diabetic retinopathy, disruption of normal astrocyte physiology can compromise the regulation of blood flow.
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Cites
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Cerebral blood flow regulation and neurovascular dysfunction in Alzheimer disease
Kisler, K., Nelson, A. R., Montagne, A., & Zlokovic, B. V. (2017) · Nature Reviews Neuroscience · doi:10.1038/nrn.2017.48 · Cited by 1,243
Pericytes of the neurovascular unit: key functions and signaling pathways
Sweeney, M. D., Ayyadurai, S., & Zlokovic, B. V. (2016) · Nature Neuroscience · doi:10.1038/nn.4288 · Cited by 1,125
Astrocyte Reactivity: Subtypes, States, and Functions in CNS Innate Immunity
Sofroniew, M. V. (2020) · Trends in Immunology · doi:10.1016/j.it.2020.07.004 · Cited by 721
Microglia-Astrocyte Crosstalk: An Intimate Molecular Conversation
Jha, M. K., Jo, M., Kim, J.-H., & Suk, K. (2019) · The Neuroscientist · doi:10.1177/1073858418783959 · Cited by 579
Pericyte degeneration leads to neurovascular uncoupling and limits oxygen supply to brain
Kisler, K., Nelson, A. R., Rege, S. V., Ramanathan, A., Wang, Y., Ahuja, A., Lazic, D., Tsai, P. S., Zhao, Z., Zhou, Y., et al. (2017) · Nature Neuroscience · doi:10.1038/nn.4489 · Cited by 497
Metadata
- Authors
- MacVicar, B. A., & Newman, E. A.
- Venue
- Cold Spring Harbor Perspectives in Biology
- Publisher
- Cold Spring Harbor Laboratory
- Published
- 2015-03-27
- Volume
- 7
- Issue
- 5
- Pages
- a020388
- ISSN
- 1943-0264 (ISSN-L)
- OpenAlex
- W2104281661
- Cited by
- 420
- References
- 91
- Type
- posted content
- Language
- en
- Open access
- bronze
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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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