astrocytes


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Related to astrocytes: microglia, Oligodendrocytes

astrocytes

Star-shaped connective tissue cells of the nervous system that link nerve cells to blood vessels and, by wrapping round brain capillaries, help to form the BLOOD-BRAIN BARRIER. Neurological connective tissue (neuroglial) cells.

astrocytes 

Neuroglial cells with many processes found in the central nervous system, the retina (especially the ganglion cells, the inner plexiform layers and the nerve fibre layer) and the optic nerve. Their function is believed to be nutritional and structural and to be involved in the clearance of neurotransmitters from within the synaptic cleft. Syn. Cajal's cells.

astrocytes (as´trōsī´ts),

n a large, star-shaped cell found in certain tissues of the nervous system. A mass of astrocytes is called astroglia. See also astrocytoma.
References in periodicals archive ?
Astrocytes were isolated and cultured from the cortex of 1-2 day old Sprague-Dawley rats using a modified version of the procedures previously described (McCarthy and de Vellis, 1980).
Astrocytes play a critical role in maintaining cerebral homeostasis by providing support to the blood-brain barrier (64), regulating the CNS response to inflammation (65), modulating synaptic transmission (66), and serving as an intermediary in neuronal regulation of blood flow (67).
We have observed in the dromedary SO, the presence of positive astrocytes between MCN.
Astrocytes release chemical transmitters called gliotransmitters.
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.
This is the first time that astrocytes have been shown to have the capacity to start a process that leads to the generation of new nerve cells after a stroke," says Zaal Kokaia, Professor of Experimental Medical Research at Lund University.
It showed that astrocytes cultured in medium plus DHA had a more physiological n-3 status, grew better, and retained their astrocyte phenotype.
School of Medicine), and almost 60 co- contributors offer a comprehensive description of the physiological functions astrocytes have in regulating neuronal activity and their critical role in pathophysiological nervous system states.
Methods: Two groups of astrocytes cultured in vitro from the two cerebral cortices of the neonatal BALB/ c mice were selected and experimental group was treated with LPS (10 [micro]g/ml) for 24 h.
Two groups of researchers--one at MIT, the other at Harvard--have shown that astrocytes get the blood pumping to parts of the brain that are thinking hard.
Star-shaped astrocytes are the most abundant cells in the central nervous system.