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Astrocyte calcium signaling: the third wave [PDF]
Nature Neuroscience, 2016 The discovery that transient elevations of calcium concentration occur in astrocytes, and release 'gliotransmitters' which act on neurons and vascular smooth muscle, led to the idea that astrocytes are powerful regulators of neuronal spiking, synaptic ...
David Attwell
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Astrocyte Calcium Signaling Shifts the Polarity of Presynaptic Plasticity
Neuroscience, 2023 Astrocytes have been increasingly acknowledged to play active roles in regulating synaptic transmission and plasticity. Through a variety of metabotropic and ionotropic receptors expressed on their surface, astrocytes detect extracellular neurotransmitters, and in turn, release gliotransmitters to modify synaptic strength, while they can also alter ...
Yukiko Goda, Mathieu Letellier
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Cold Spring Harbor Perspectives in Biology
Astrocytes are predominant glial cells that tile the central nervous system and participate in well-established functional and morphological interactions with neurons, blood vessels, and other glia. These ubiquitous cells display rich intracellular Ca2+ signaling, which has now been studied for over 30 years.
Baljit Khakh +2 more
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Astrocytes are predominant glial cells that tile the central nervous system and participate in well-established functional and morphological interactions with neurons, blood vessels, and other glia. These ubiquitous cells display rich intracellular Ca2+ signaling, which has now been studied for over 30 years.
Baljit Khakh +2 more
exaly +3 more sources
Dynamical patterns of calcium signaling in a functional model of neuron–astrocyte networks
Journal of Biological Physics, 2009 We propose a functional mathematical model for neuron-astrocyte networks. The model incorporates elements of the tripartite synapse and the spatial branching structure of coupled astrocytes.
Alexey Brazhe +2 more
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Glutamate‐induced calcium signaling in astrocytes
Glia, 1994AbstractAstrocytes respond to the excitatory neurotransmitter glutamate with dynamic spatio‐temporal changes in intracellular calcium [Ca2+]i. Although they share a common wave‐like appearance, the different [Ca2+]i changes‐‐an initial spike, sustained elevation, oscillatory intracellular waves, and regenerative intercellular waves‐‐are actually ...
W T, Kim, M G, Rioult, A H, Cornell-Bell
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Synaptic regulation of the astrocyte calcium signal
Journal of Neural Transmission, 2004During the last years, a great amount of evidence demonstrates the existence of bidirectional communication between astrocytes and neurons, which has revealed an important active role of astrocytes in the physiology of the nervous system. As a consequence of this evidence, a new concept of the synaptic physiology--"the tripartite synapse"--has been ...
Perea, Gertrudis, Araque, Alfonso
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Calcium signalling in astrocytes and modulation of neural activity
Biosystems, 2007Starting from the experimental data on ATP evoked calcium responses in astrocytes, a biophysical model describing these phenomena was built. The simulations showed, in agreement with the experimental findings, that the intracellular calcium fluxes mediated by the P2X and P2Y purinoreceptors are responsible for the biphasic ATP evoked calcium response ...
Di Garbo A +4 more
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Optimizing Measures of Information Encoding in Astrocytic Calcium Signals
2022While most models of brain information encoding focus on neurons, recent studies have shown that calcium dynamics of astrocytes, the major class of non-neural cells in the brain, can add information about key cognitive variables that is not found in the activity of nearby neurons. This raises the question of what could be the contribution of astrocytes
Jacopo Bonato +3 more
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