ArticleThe Journal of neuroscience : the official journal of the Society for Neuroscience2015
Astrocyte contributions to flow/pressure-evoked parenchymal arteriole vasoconstriction.
Article in The Journal of neuroscience : the official journal of the Society for Neuroscience, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 64 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
64 citing papers in PubMed, 95 citations in OpenAlex.
- Astrocytes Coordinate Neurovascular Coupling During Prolonged Sensory Demand via AQP4/TRPA1/BEST1/D-Serine Signaling.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
- Prolonged systemic inflammation worsens impairments to astrocyte CaAlzheimer's & dementia : the journal of the Alzheimer's Association · 2026Article
- Astrocyte-Neuron Crosstalk in Hypertension: Mechanisms and Therapeutic Significance.Reviews in cardiovascular medicine · 2026Review
- Astrocytes: Orchestrators of brain gas exchange and oxygen homeostasis.The Journal of physiology · 2026Review
- Brief mechanical pulses induce sustained intracellular L-lactate production in astrocytes.Frontiers in cellular neuroscience · 2026Article
- Prolonged systemic inflammation worsens impairments to astrocyte CabioRxiv : the preprint server for biology · 2025Article
- Disrupted Calcium Dynamics in Reactive Astrocytes Occur with End Feet-Arteriole Decoupling in an Amyloid Mouse Model of Alzheimer's Disease.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025Article
- Cerebrovascular-mediated dynamic alterations in neurovascular coupling: a key pathological mechanism of depression.Cell & bioscience · 2025Review
- The Cells of the Vasculature: Advances in the Regulation of Vascular Tone in the Brain and Periphery.Basic & clinical pharmacology & toxicology · 2025Review
- The Unexpected Role of the Endothelial Nitric Oxide Synthase at the Neurovascular Unit: Beyond the Regulation of Cerebral Blood Flow.International journal of molecular sciences · 2024Review
- Mechanobiological insight into brain diseases based on mechanosensitive channels: Common mechanisms and clinical potential.CNS neuroscience & therapeutics · 2024Review
- Astrocyte Regulation of Cerebral Blood Flow in Health and Disease.Cold Spring Harbor perspectives in biology · 2024Review
- Analysis of potassium ion diffusion from neurons to capillaries: Effects of astrocyte endfeet geometry.The European journal of neuroscience · 2024Article
- Astrocyte regulation of extracellular space parameters across the sleep-wake cycle.Frontiers in cellular neuroscience · 2024Review
- The phase coherence of the neurovascular unit is reduced in Huntington's disease.Brain communications · 2024Article
- Astrocytic TRPV4 Channels and Their Role in Brain Ischemia.International journal of molecular sciences · 2023Review
- Intraluminal pressure elevates intracellular calcium and contracts CNS pericytes: Role of voltage-dependent calcium channels.Proceedings of the National Academy of Sciences of the United States of America · 2023Article
- A quantitative model for human neurovascular coupling with translated mechanisms from animals.PLoS computational biology · 2023Article
- Association of cerebral microvascular dysfunction and white matter injury in Alzheimer's disease.GeroScience · 2022Article
- Toolbox for studying neurovascular couplingNeurophotonics · 2022Review
4 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors at 2 institutions in 1 country.
Funding
Abstract
Basal and activity-dependent cerebral blood flow changes are coordinated by the action of critical processes, including cerebral autoregulation, endothelial-mediated signaling, and neurovascular coupling. The goal of our study was to determine whether astrocytes contribute to the regulation of parenchymal arteriole (PA) tone in response to hemodynamic stimuli (pressure/flow). Cortical PA vascular responses and astrocytic Ca(2+) dynamics were measured using an in vitro rat/mouse brain slice model of perfused/pressurized PAs; studies were supplemented with in vivo astrocytic Ca(2+) imaging. In vitro, astrocytes responded to PA flow/pressure increases with an increase in intracellular Ca(2+). Astrocytic Ca(2+) responses were corroborated in vivo, where acute systemic phenylephrine-induced increases in blood pressure evoked a significant increase in astrocytic Ca(2+). In vitro, flow/pressure-evoked vasoconstriction was blunted when the astrocytic syncytium was loaded with BAPTA (chelating intracellular Ca(2+)) and enhanced when high Ca(2+) or ATP were introduced to the astrocytic syncytium. Bath application of either the TRPV4 channel blocker HC067047 or purinergic receptor antagonist suramin blunted flow/pressure-evoked vasoconstriction, whereas K(+) and 20-HETE signaling blockade showed no effect. Importantly, we found TRPV4 channel expression to be restricted to astrocytes and not the endothelium of PA. We present evidence for a novel role of astrocytes in PA flow/pressure-evoked vasoconstriction. Our data suggest that astrocytic TRPV4 channels are key molecular sensors of hemodynamic stimuli and that a purinergic, glial-derived signal contributes to flow/pressure-induced adjustments in PA tone. Together our results support bidirectional signaling within the neurovascular unit and astrocytes as key modulators of PA tone.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.