astrocyte

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Related to astrocytic: protoplasmic astrocyte

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

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

as′tro·cyt′ic (-sĭt′ĭk) adj.

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]
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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.

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]
References in periodicals archive ?
Ikegaya, "Large-scale calcium waves traveling through astrocytic networks in vivo," The Journal of Neuroscience, vol.
Sugiura et al., "Endothelial microsomal prostaglandin e synthase-1 facilitates neurotoxicity by elevating astrocytic [Ca.sup.2+] levels," Neurochemistry International, vol.
Table I.- Astrocytic parameters in the visual area V2 of the young and old cats (means +- SEM).
Our most significant findings were (1) disruption and fragmentation of myelin, (2) demyelination with axon sparing, (3) phagocytosis of myelin debris and other degenerating elements by reactive microglia, and (4) proliferation of fibrous astrocytic processes.
Several studies have investigated the potential role of S100B as a peripheral biochemical marker of neural injury, including reactive gliosis, astrocytic death, and/or blood-brain barrier dysfunction (2).
mRNA EXPRESSION OF AGGRECAN IN NEURONAL AND ASTROCYTIC CULTURES IN CHICK BRAIN
Lawrence Eng (Palo Alto, Calif.) is attempting to suppress the formation of astrocytic scars (believed to form a physical barrier that prevents axonal regeneration) in contused rat spinal cord, using DNA and RNA to inhibit expression of a critical astrocyte protein that is involved with scar formation.
Population-based studies on incidence, survival rates and genetic alterations in astrocytic and oligodendroglial gliomas.
In the study, 52,4 % presented low expression in astrocytic glial cell nuclei, with a survival mean of 14.2 months in comparison to 10.2 months in the high expression group (p=0.33).
NPT520-34 is a clinical stage orally bioavailable small molecule that reduces astrocytic and microglial markers of neuroinflammation with robust beneficial effects on neuropathology and motor function in animal models of Parkinson's disease.
As constitute 10%-11% of glial tumors and it is known through the new classification that the genetic alterations that differentiate grade II-III astrocytic tumors from oligodendrogliomas are p53 and alpha thalassemia/mental retardation syndrome (ATRX) mutations (4).