Cited by 314Barrier Structure and Function StudiesTraumatic Brain Injury and Neurovascular DisturbancesMigraine and Headache Studies

SEROTONIN IN THE REGULATION OF BRAIN MICROCIRCULATION

COHEN, ZVI, BONVENTO, GILLES, LACOMBE, PIERRE, HAMEL, EDITH·1996·Progress in Neurobiology

Abstract

Manipulation of brainstem serotonin (5-HT) raphe neurons induces significant alterations in local cerebral metabolism and perfusion. The vascular consequences of intracerebrally released 5-HT point to a major vasoconstrictor role, resulting in cerebral blood flow (CBF) decreases in several brain regions such as the neocortex. However, vasodilatations, as well as changes in blood-brain barrier (BBB) permeability, which are blocked by 5-HT receptor antagonists also can be observed. A lack of relationship between the changes in flow and metabolism indicates uncoupling between the two variables and is suggestive of a direct neurogenic control by brain intrinsic 5-HT neurons on the microvascular bed. In line with these functional data are the close associations that exist between 5-HT neurons and the microarterioles, capillaries and perivascular astrocytes of various regions but more intimately and/or more frequently so in those where CBF is altered significantly following manipulation of 5-HT neurons. The ability of the microvascular bed to respond directly to intracerebrally released 5-HT is underscored by the expression of distinct 5-HT receptors in the various cellular compartments of the microvascular bed. Thus, it appears that while some 5-HT-mediated microvascular functions involve directly the blood vessel wall, others would be relayed through the perivascular astrocyte. The strategic localization of perivascular astrocytes and the different 5-HT receptors that they harbor strongly emphasize their putative pivotal role in transmitting information between 5-HT neurons and microvessels. It is concluded that the cerebral circulation has full capacity to adequately and locally adapt brain perfusion to changes in central 5-HT neurotransmission either directly or indirectly via the neuronal-astrocytic-vascular tripartite functional unit. Dysfunctions in these neurovascular interactions might result in perfusion deficits and might be involved in specific pathological conditions.

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Crossref · 10.1016/s0301-0082(96)00033-0

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165 of 165 references verified0 citation errors · 0 not checkable

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  • Because serotonin is involved in vasoconstriction, prior or recent MDMA exposure might have affected BOLD responses.

    “Moreover, due to involvement of serotonin in vasoconstriction (Cohen et al. 1996), it is possible that prior or recent MDMA exposure might have affected BOLD responses.”

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Authors
COHEN, Z., BONVENTO, G., LACOMBE, P., & HAMEL, E.
Affiliations
  • Montreal Neurological Institute and Hospital (CA)
  • Centre National de la Recherche Scientifique (FR)
Venue
Progress in Neurobiology
Publisher
Elsevier BV
Published
1996-11
Volume
50
Issue
4
Pages
335-362
ISSN
0301-0082 (ISSN-L)
OpenAlex
W2050297923
Cited by
314
References
165
Citations by year
2026: 4 · 2025: 12 · 2024: 5 · 2023: 8 · 2022: 6 · 2021: 13 · 2020: 5 · 2019: 5 · 2018: 7 · 2017: 14 · 2016: 13 · 2015: 11 · 2014: 16 · 2013: 22 · 2012: 18
FWCI
5.03
Type
journal article
Language
en
Open access
closed
Locations
  • Progress in Neurobiology (publishedVersion)
  • PubMed (publishedVersion)
Funders
Centre National de la Recherche Scientifique
Topics
  • Life Sciences › Neuroscience › Neurology › Barrier Structure and Function Studies
  • Health Sciences › Medicine › Neurology › Traumatic Brain Injury and Neurovascular Disturbances
  • Health Sciences › Medicine › Psychiatry and Mental health › Migraine and Headache Studies
Keywords
serotonin, cerebral microcirculation, cerebral blood flow, vasoconstriction, vasodilation, blood-brain barrier permeability, serotonin receptors, perivascular astrocytes, microvascular bed, neurovascular coupling
MeSH terms
Animals, Brain, Cerebrovascular Circulation, Humans, Microcirculation, Serotonin

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