astrocyte


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Related to astrocyte: microglia, neuroglia, protoplasmic astrocyte, astrocytoma, Glial cells, PubMed, Oligodendrocytes

astrocyte

 [as´tro-sīt]
a neuroglial cell of ectodermal origin, characterized by fibrous or protoplasmic processes; collectively called astroglia or macroglia.
 Astrocyte in association with a blood vessel. From Dorland's, 2000.

as·tro·cyte

(as'trō-sīt),
One of the large neuroglia cells of nervous tissue.
See also: neuroglia.
[G. astron, star, + kytos, hollow (cell)]

astrocyte

/as·tro·cyte/ (as´tro-sīt) a neuroglial cell of ectodermal origin, characterized by fibrous, protoplasmic, or plasmatofibrous processes. Collectively called astroglia.
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Astrocyte in association with a blood vessel.

astrocyte

(ăs′trə-sīt′)
n.
A star-shaped cell, especially a neuroglial cell of nervous tissue.

as′tro·cyt′ic (-sĭt′ĭk) adj.

astrocyte

[as′trōsīt′]
Etymology: Gk, aster + kytos, cell
a large, star-shaped neuroglial cell with many branches, found in certain tissues of the nervous system.
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Astrocyte

as·tro·cyte

(as'trō-sīt, astrŏ-sīt)
One of the large neuroglia cells of nervous tissue.
See also: neuroglia
Synonym(s): astroglia, macroglia.
[G. astēr, star, + kytos, chamber, cell]
Enlarge picture
ASTROCYTES

astrocyte

(as'tro-sit?) [ astro- + -cyte, cell]
A common, asterisk-shaped glial cell with many radiating cell processes. Astrocytes are neuroectodermal cells that begin as radial glia that later mature into multipolar cells. Astrocytes are spread homogeneously throughout the central nervous system and each astocyte occupies its own compartment of neuropil. The cell processes of an astrocyte are covered with "leaflets" of cytoplasm that contact axons, synaptic structures, blood vessels, and neighboring glia. Touching astrocytes are electrically coupled and can propagate calcium potentials and within its microdomain of neuropil, each astrocyte regulates the extracellular concentration of certain molecules, including neurotransmitters. In areas of injury, astrocytes can proliferate.
Synonym: astroglial cell See: illustrationastrocytic (as?tro-sit'ik), adjective

Cajal,

Santiago, Spanish histologist and Nobel laureate, 1852-1934.
Cajal astrocyte stain - a method for demonstrating astrocytes by impregnation in a solution containing gold chloride and mercuric chloride.
Cajal cell - Synonym(s): horizontal cell of Cajal
Cajal formol ammonium bromide solution
Cajal gold-sublimate method
Cajal uranium silver method
horizontal cell of Cajal - a small fusiform cell found in the superficial layer of the cerebral cortex with its long axis placed horizontally. Synonym(s): astrocyte; Cajal cell
interstitial nucleus of Cajal - a group of neurons believed to be involved in the integration of head and eye movements. Synonym(s): interstitial nucleus

Deiters,

Otto F.K., German anatomist, 1834-1863.
Deiters cells - the supporting cells of the organ of Corti; one of the large neuroglia cells of nervous tissue. Synonym(s): astrocyte; phalangeal cell
Deiters nucleus - lateral vestibular nucleus.
Deiters terminal frames - platelike structures in the organ of Corti uniting the outer phalangeal cells with Hensen cells.

neuroglia

non-neuronal cells located within the central and peripheral nervous systems

as·tro·cyte

(as'trō-sīt, astrŏ-sīt)
One of the large neuroglial cells of neural tissue.
See: neuroglia
[G. astēr, star, + kytos, chamber, cell]

astrocyte

a neuroglial cell of ectodermal origin, characterized by fibrous or protoplasmic processes; collectively called astroglia or macroglia.

gemistocytic astrocyte
a plump astrocyte which results from injury to nervous tissue. Usually an extensive area is involved.
References in periodicals archive ?
Smith and his colleagues dribbled glutamate--a chemical messenger commonly used by neurons--into a dish containing astrocytes modified to glow when calcium levels go up.
Aquaporin 4 was present in high amounts in astrocytes and ependymocytes and in low amounts in the choroidal plexus epithelia and leptomeningeal cells.
In primary cortical astrocyte cells, LPNS reduced [H.
Generation of an immortalized astrocyte cell line from H-2Kb-tsA58 mice to study the role of astrocytes in brain metastasis.
Vimentin was also present in astrocyte processes and/or capillary wall (arrowheads) (D).
This allows the gliotransmitterto escape out of the vesicle, through the membrane of the astrocyte and outside the astrocyte.
So omega-3 fatty acid will be used to see if there is a possibility that it will help to protect the astrocytes in the presence of MPTP, by altering the membrane making them capable to clean up the toxins.
Results: A statistically significant difference between the levels of IL-6 in cortical astrocytes in the left and right hemispheres of culture supernatants was observed (P<0.
Each astrocyte seems to be intimately associated with a single neuron or a small number of neurons, Sur says.
These alterations in gene expression may account for some of the changes in neurotransmitter activity and astrocyte structure observed in HE patients.
Here, we will focus on how modulations of synaptic transmission by astrocytes could favor the emergence of synchronized neuronal, leveraging the predictions of our theoretical approach in the perspective of brain disorders, and epilepsy in particular.
Baljit Khakh, a professor of physiology and neurobiology, said that astrocytes appear in the brain in equal numbers to neurons, which enable neurons to signal each other by maintaining an optimal chemical environment outside the cell.