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Topic: Ependymal cell

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	Glial cell - Wikipedia, the free encyclopedia
		Oligodendrocytes are cells that coat axons in the central nervous system (CNS) with their cell membrane, called myelin, producing the so-called myelin sheath.
		Ependymal cells, also named ependymocytes, line the cavities of the CNS and beat their cilia to help circulate the cerebrospinal fluid.
		In the retina, the radial Müller cell is the principal glial cell, and participates in a bidirectional communication with neurons.
	en.wikipedia.org /wiki/Ependymal_cell (1353 words)

	4. The Adult Stem Cell [Stem Cell Information]
		The bone marrow-derived cells are sometimes sorted—using a panel of surface markers—into populations of hematopoietic stem cells or bone marrow stromal cells [46, 54, 71].
		Adjacent to the ependymal cell layer, in a region sometimes designated as the subependymal or subventricular zone, is a mixed cell population that consists of neuroblasts (immature neurons) that migrate to the olfactory bulb, precursor cells, and astrocytes.
		Neural stem cells in the mammalian fetal brain are concentrated in seven major areas: olfactory bulb, ependymal (ventricular) zone of the lateral ventricles (which lie in the forebrain), subventricular zone (next to the ependymal zone), hippocampus, spinal cord, cerebellum (part of the hindbrain), and the cerebral cortex.
	stemcells.nih.gov /info/scireport/chapter4.asp (11899 words)

	Endogenous Light Theory of Consciousness
		The innermost layer of cells is primarily ciliated ependymal cells.
		Cell cytoskeletal fibers have been observed extending to mitochondria and cell nuclei, to desmosomes joining adjacent cells, to other hemidesmosomes where cells attach to collagen fibers in the basement membrane, and to ciliary "rootlets" which extend inward from the centrioles at ciliary bases.
		Cells are known to emit light, there is abundant historical reference to our spiritual nature being associated with light, and there are physiological structures and functions in the brain that could organize endogenous light into resonant interference patterns.
	light.simanonok.com (5098 words)

	UBEP 2002 Ninth Annual Undergraduate Research Poster Symposium (Site not responding. Last check: 2007-10-30)
		Ependymal cells form the epithelial lining surrounding the ventricles of the brain.
		In addition, we have found that cell proliferation in the adult amphibian brain is intense in the dorsomedial hypothalamus, including the ependymal layer lining the third ventricle.
		These studies are consistent with recent findings that the ependymal layer and subventricular region in adult mice contain neural stem cells, and that spinal cord ependyma play a crucial role in salamander tail regeneration.
	lifesciences.asu.edu /ubep2002/participants/buenau (269 words)

	Genetic programs and responses of neural stem/progenitor cells during demyelination: potential insights into repair ...
		dentate gyrus, and the ependymal layer of the spinal cord (77).
		SVZ neuronal progenitor cells, and ependymal cells (149, 175),
		of cells from the SVZ, migration to the corpus callosum, and
	physiolgenomics.physiology.org /cgi/content/full/14/3/171 (8731 words)

	Streptococcus pneumoniae-Induced Inhibition of Rat Ependymal Cilia Is Attenuated by Antipneumolysin Antibody -- Hirst ...
		Inhibition of the ependymal CBF by intact wild-type pneumococci (A) or intact pneumolysin-negative pneumococci (B).
		cytolytic and irreversibly inhibits the ependymal cilia (16).
		Ultrastructure and movement of the ependymal and tracheal cilia in congenitally hydrocephalic WIC-Hyd rats.
	iai.asm.org /cgi/content/full/72/11/6694 (2391 words)

	[No title] (Site not responding. Last check: 2007-10-30)
		These cells respond to injury by changes in their expression of cytoskeletal proteins, producing extracellular matrix degrading enzymes and converting from an epithelium (coherent cell sheet) to a mesenchyme (loosely associated mass of cells) and migrating into the lesion site.
		A complete tissue culture system will permit us to manipulate the cells in a controlled manner to determine the materials produced directly by the ependymal cells that assist in cord regeneration and the cues and signaling systems that trigger the ependymal response in the first place.
		The SAC98 project will involve setting up salamander ependymal cell cultures, obtaining re-epithelialization, then treating the cells with agonists and antagonists of calcium transport to determine which, if any calcium transport mechanisms are involved in the onset of the ependymal cell response.
	www.science.iupui.edu /sac98/team1.htm (306 words)

	WebWire® \| Johns Hopkins Scientists Map Brain Area That May Aid Hunt For Human Brain Stem Cells
		The ependymal layer is a layer of cells that make up the outer wall of these tubes.
		Because the potential existence of human brain stem cells could have an enormous impact in understanding and subsequently developing treatments for brain diseases and injury, Quinones says his team set out to learn more about how new cells are formed in this critical area in the adult human brain.
		But if we can achieve a better understanding of why these cells are there and how they function and/or migrate, this could help us treat brain tumors such as ependynomas or even gliomas as well as help us treat neurodegenerative diseases and brain trauma,” he says.
	www.webwire.com /ViewPressRel.asp?aId=9716 (567 words)

	[No title]
		Progenitor cells may prove to be more or less pluripotent in the lab, but if they don't succeed on a local level in the body, they won't cure anything.
		Bonner-Weir's own work involves expanding human pancreatic duct cells in vitro, then turning them into insulin-producing islet cells.15 She calls the duct cells, which are differentiated, "functional stem cells" because they undergo scores of doublings in culture and help to regrow pancreas after a portion is removed.
		This putative stem cell in the embryoid body has been harder to find, he says, because it "appears to be more immature than the one in adult bone marrow." His approach is to transplant candidate stem cells into mice with drug-damaged hematopoietic systems and then to observe whether blood-cell re-population occurs.
	www.mult-sclerosis.org /news/Dec2000/StemCellDebatePartII.html (3052 words)

	Hunt For Human Brain Stem Cells Continues As Johns Hopkins Scientists Map Brain Area Containing Astrocytes
		A study led by a Johns Hopkins neurosurgeon has provided the first comprehensive map of a part of the adult human brain containing astrocytes, cells known to produce growth factors critical to the regeneration of damaged neural tissue and that potentially serve as brain stem cells.
		The subventricle zone refers to tissue and cells that lie next to the ventricles or tubes located in the center of the brain that act as conduits for the cerebral spinal fluid that bathes the entire brain.
		The study also revealed that there were displaced ependymal cells in the SVZ that should not be there, according to Quinones.
	www.medicalnewstoday.com /medicalnews.php?newsid=37912 (600 words)

	Dysregulation of protein modification by ISG15 results in brain cell injury -- Ritchie et al. 16 (17): 2207 -- Genes ...
		of CSF from the choroid plexus epithelial cells that are the principal
		In contrast to the ependymal cells of the wild-type (a), lateral ventricle ependymal cells of UBP43
		Cells that have undergone necrosis are indicated with arrows.
	www.genesdev.org /cgi/content/full/16/17/2207 (4172 words)

	Specialized Membrane Domains for Water Transport in Glial Cells: High-Resolution Immunogold Cytochemistry of ...
		Polarized expression and membrane topology of AQP4 in glial cells.
		Glial and ependymal expression of AQP4 in the subfornical organ.
		Walz W (1989) Role of glial cells in the regulation of the brain microenvironment.
	www.jneurosci.org /cgi/content/full/17/1/171 (5133 words)

	Central Nervous System - tumor PRINTER FRIENDLY VERSION
		Epithelioid cells: xanthogranuloma or gitter cells, oligodendroglioma, choroid plexus tumor, medulloepithelioma, meningioma, chordoma, paraganglioma, pituitary adenoma, endodermal sinus tumor, embryonal carcinoma, hemangioblastoma, craniopharyngioma, metastatic carcinoma, melanoma
		Micro: bipolar neoplastic cells with elongated hairlike processes that are arranged in parallel bundles and resemble mats of hair; Rosenthal fibers, often associated with eosinophilic protein droplets (resembling foamy macrophages); may have microscopically infiltrative margin; mural nodule may be highly vascular; often calcifications
		Tanyctes are common progenitor cells of both ependymal cells and astrocytes; are elongated, unipolar or bipolar, extend from ventricular lumen to surface of nervous system
	www.pathologyoutlines.com /Cnstumorpf.html (4844 words)

	Effect of Pneumolysin on Rat Brain Ciliary Function: Comparison of Brain Slices with Cultured Ependymal Cells -- HIRST ... (Site not responding. Last check: 2007-10-30)
		The adherent ependymal cells were fed by the replacement
		15 min) to ependymal cells in culture, we observed that the
		cells in culture are advantageous in that the proportion of
	intl.pedresearch.org /cgi/content/full/47/3/381 (2157 words)

	[No title] (Site not responding. Last check: 2007-10-30)
		Q7: Cells responsible for peripheral nerve saltatory conduction are the:
		Q30: Renewal of schwann cell plasma membrane proteins occurs at:
		Q31: Saltatory conduction occurs as a consequence of electrical depolarization of the neuronal cell membrane at:
	www-personal.umich.edu /~shelden/N.html (206 words)

	Dysfunction of axonemal dynein heavy chain Mdnah5 inhibits ependymal flow and reveals a novel mechanism for ...
		Transmission electron microscopy of ependymal cilia of the fourth brain ventricle show that (A) eight ODAs (arrows) are visible in the control, whereas different transverse sections of ependymal cilia from the same Mdnah5-deficient mouse show (B) total and (C) partial absence of ODAs.
		Ependymal flow produced by ciliary activity in wild-type mouse brain ventricles is absent in Mdnah5-deficient mice.
		caused by bacterial toxins in meningitis) ependymal cilia
	hmg.oxfordjournals.org /cgi/content/full/13/18/2133 (3871 words)

	eMedicine - Ependymoma : Article by Jeffrey N Bruce, MD
		Background: Ependymomas are glial tumors that arise from ependymal cells within the CNS.
		Myxopapillary ependymomas are considered a biologically and morphologically distinct variant of ependymoma, occurring almost exclusively in the region of the cauda equina and behaving in a more benign fashion than grade II ependymoma.
		Myxopapillary ependymoma histology consists of a papillary arrangement of cuboidal or columnar tumor cells surrounding a vascularized core of hyalinized and poorly cellular connective tissue.
	www.emedicine.com /med/topic700.htm (6525 words)

	MEDNEPAL.com :: Hunt For Human Brain Stem Cells Continues As Johns Hopkins Scientists Map Brain Area Containing Astr, ...
		MEDNEPAL.com :: Hunt For Human Brain Stem Cells Continues As Johns Hopkins Scientists Map Brain Area Containing Astr, News Details.
		Hunt For Human Brain Stem Cells Continues As Johns Hopkins Scientists Map Brain Area Containing Astr
		Regeneration of damaged neural tissue and that potentially serve as brain stem cells
	www.mednepal.com /news/news_details.php?id=153 (618 words)

	Brain & Nervous System > Scientists Map Brain Area That May Aid for Human Brain Stem Cells
		Scientists Map Brain Area That May Aid for Human Brain Stem Cells
		Researchers Identify Brain Cells Used To Categorize Images
		"We do not think that ependymal cells are stem cells," he says.
	www.emaxhealth.com /85/4831.html (612 words)

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