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Topic: Microvilli



  
 Cellular target of weak magnetic fields: ionic conduction along actin filaments of microvilli -- Gartzke and Lange 283 ...
microvilli and the external medium is one of the consequences
Moreover, a recent study (96) has demonstrated that EMFs severely affect the structural organization of microvilli.
concept of regulation of ion and substrate pathways through microvilli
http://ajpcell.physiology.org/cgi/content/full/283/5/C1333   (6999 words)

  
 RedOrbit - Science - A Two-Photon FRAP Analysis of the Cytoskeleton Dynamics in the Microvilli of Intestinal Cells
This method was applied to two-photon FRAP experiments to study the dynamics of the brush border at the apical surface of enterocytes.
A Two-Photon FRAP Analysis of the Cytoskeleton Dynamics in the Microvilli of Intestinal Cells
Our earlier work provided the first example of this kind of approach in a study of the dynamics of ezrin in the microvilli of renal epithelial cells (Coscoy et al., 2002).
http://www.rednova.com/news/display?id=130595   (7773 words)

  
 A hydrodynamic mechanosensory hypothesis for brush border microvilli -- Guo et al. 279 (4): 698 -- AJP - Renal ...
The analysis in the present study indicates that from both a hydrodynamic and structural standpoint, the microvilli are ideally
the microvilli all needed to sense the flow at the edge of the
flow rate, if the microvilli geometry did not change with flow
http://ajprenal.physiology.org/cgi/content/full/279/4/F698   (6795 words)

  
 Role of microvillar cell surfaces in the regulation of glucose uptake and organization of energy metabolism -- Lange ...
Dimensions are taken from microvilli of rat hepatocytes (Fig.
Similarly, omission of serum is a widely used condition
This technique is based on gentle shearing forces exerted on the
http://ajpcell.physiology.org/cgi/content/full/282/1/C1   (8858 words)

  
 Dynamic assembly of surface structures in living cells -- Gorelik et al. 100 (10): 5819 -- Proceedings of the National ...
The large specialized microvilli in the intestine and inner ear
In our experiments, microvilli after formation were in a steady
structures, like the intestinal brush border microvilli or the
http://www.pnas.org/cgi/content/full/100/10/5819   (2437 words)

  
 Regulation of Oocyte Microvilli Development in the Baboon Fetal Ovary by Estrogen -- Zachos et al. 145 (2): 959 -- ...
the number and length of microvilli in rat pituitary lactotrophs
In contrast, in animals treated with CGS 20267, oocyte
Moreover, these changes in oocyte structure were correlated
http://endo.endojournals.org/cgi/content/full/145/2/959   (4135 words)

  
 Neisseria gonorrhoeae Coordinately Uses Pili and Opa To Activate HEC-1-B Cell Microvilli, Which Causes Engulfment of ...
TEM was used to confirm that microvilli contributed to the internalization of piliated Opa
Microvillus adherence is clearly separate from bacterium-pilus interactions.
(B) The interaction between microvilli and the P
http://iai.asm.org/cgi/content/full/67/7/3469   (5917 words)

  
 Chemokine stimulation of human peripheral blood T lymphocytes induces rapid dephosphorylation of ERM proteins, which ...
Because the breakdown of microvilli in several cell types correlates
such as microvilli and filopodia is consistently observed in
FERM construct of ezrin, which results in ablation of lymphocyte
http://www.bloodjournal.org/cgi/content/full/102/12/3890   (6404 words)

  
 Dynamic Contact Forces on Leukocyte Microvilli and Their Penetration of the Endothelial Glycocalyx -- Zhao et al. 80 ...
the static forces on the microvilli during pauses in tethered
we shall treat the microvilli as being rigid, and the more important
to explore the free-rolling interaction of leukocyte microvilli
http://www.biophysj.org/cgi/content/full/80/3/1124   (8809 words)

  
 Proteomic Characterization of Isolated Retinal Pigment Epithelium Microvilli -- Bonilha et al. 3 (11): 1119 -- ...
channel 6 (55) in the RPE apical microvilli.
When the isolated microvilli were subjected to fractionation
microvilli, which vary in structure according to the specific
http://www.mcponline.org/cgi/content/full/3/11/1119   (4677 words)

  
 Expression of myosin VI within the early endocytic pathway in adult and developing proximal tubules -- Biemesderfer et ...
the base of microvilli in the intestine and at the base of stereocilia
in the core of microvilli supporting the immunofluorescence staining
(such as microvilli or stereocilia) into actin meshworks, or in
http://ajprenal.physiology.org/cgi/content/full/282/5/F785   (5735 words)

  
 Lymphocyte microvilli are dynamic, actin-dependent structures that do not require Wiskott-Aldrich syndrome protein ...
Upon LatA washout, microvilli recover on a slower timescale
In contrast to previous reports suggesting lymphocyte microvillar
Lymphocytes from human severe WAS patients have normal microvilli.
http://www.bloodjournal.org/cgi/content/full/104/5/1396   (4093 words)

  
 Dartmouth Medical School - Probing the Surface of White Blood Cells to Enhance Immune System Medicine
The study represents the first quantitative characterization of lymphocyte microvilli, according to Higgs, and indicates that microvilli are dynamic structures that rapidly alternate between states of assembly and disassembly.
This means that if researchers could biochemically dissect mechanisms by which microvilli assemble and segregate, they would be able to develop immunosuppressive or anti-metastatic agents to enhance treatment of cancer and other diseases.
The researchers hope to identify the proteins that assemble lymphocyte microvilli to provide a specific target for drug therapy.
http://dms.dartmouth.edu/news/2004_h2/30aug2004_higgs.shtml   (721 words)

  
 p56Lck anchors CD4 to distinct microdomains on microvilli -- Foti et al. 99 (4): 2008 -- Proceedings of the National ...
with microvilli and DRMs in the same experimental conditions (time
Microvilli are characterized by a dense cytoskeleton core made of a bundle of actin and its associated proteins (26).
Data are means ± SE from two to three separate experiments totaling 900-1,200 autoradiographic grains for each time point.
http://www.pnas.org/cgi/content/full/99/4/2008   (4400 words)

  
 Images with Microvilli
Irregularly shaped and oriented microvilli; some basal bodies ()
Choroid plexus; microvilli that are NOT organized into a tight ()
Choroid plexus; numerous irregularly oriented microvilli at the ()
http://www.med.uiuc.edu/histo/medium/atlas/objects/357.htm   (37 words)

  
 Research Projects
1) structural and functional studies of microvilli on mammalian lymphocytes.
We can separate microvilli from the rest of the cell by simply passing cells through a hypodermic needle!
The consequences of these topological features for lymphocyte function have hardly been studied at all.
http://dms.dartmouth.edu/higgs/research   (921 words)

  
 Ezrin-dependent regulation of the actin cytoskeleton by {beta}-dystroglycan -- Spence et al. 13 (15): 1657 -- Human ...
The association of dystroglycan with ezrin in the microvilli
ß-dystroglycan and ezrin colocalize especially at the base of microvilli.
to microvilli structures in a number of cell types where it
http://hmg.oxfordjournals.org/cgi/content/full/13/15/1657   (5685 words)

  
 New Page 0
The comparison of apical membrane of all groups showed that the microvilli were present in the all groups although the number of these structures had some changes but on the hyperstimulated and progesterone injected groups, the microvilli disappeared and other projections were seen without any glycocalyx on their surfaces.
Also our results showed that the glycocalyx developed on the surface of the control and the hyperstimulated groups at the implantation time and there were no carbohydrates in the progesterone injected groups.
Both of these surfaces undergo specific morphological and ultrastructural changes, which are mediated by ovarian hormones (1, 2).
http://royaninstitute.org/yakhteh/ya1607fp.htm   (2128 words)

  
 Introduction to the Choanoflagellata
Choanoflagellate-like cells are also found in other animal phyla; in organisms such as flatworms and rotifers, for instance, choanoflagellate-like cells are found in flame bulbs that act as excretory organs.
The flagellum may push the cell forward, in the case of free-swimming choanoflagellates; many species, however, are attached to a substrate by a thin stalk for part or all of their life cycles.
Choanoflagellates are almost identical in shape and function with the choanocytes, or collar cells, of sponges; these cells generate a current that draws water and food particles through the body of a sponge, and they filter out food particles with their microvilli.
http://www.ucmp.berkeley.edu/protista/choanos.html   (352 words)

  
 An Electron microscopic view of membranes
Typically microvilli are found in absorptive cells, whenever there is a need for an increase in surface area.
The figures to the right show views of microvilli cut transversely.
It is also covered by a glycocalyx which are peripheral glycoproteins that attach themselves to the membrane.
http://cellbio.utmb.edu/cellbio/membran3.htm   (898 words)

  
 Espin cross-links cause the elongation of microvillus-type parallel actin bundles in vivo -- Loomis et al. 163 (5): ...
of microvilli on control cells necessitated that the FRAP analysis
GFP-villin was expressed at an average level that was 30% of
individual cells expressing more GFP-espin had longer microvilli.
http://www.jcb.org/cgi/content/full/163/5/1045   (7119 words)

  
 Cell membrane -- Facts, Info, and Encyclopedia article
The finger-like projections, called "microvilli", increase cell surface area and facilitate the absorption of molecules from the outside.
Returning to the example of epithelial cells in the gut, the apical surfaces of many such cells are dense with involutions, all similar in size.
http://www.absoluteastronomy.com/encyclopedia/c/ce/cell_membrane.htm   (995 words)

  
 Does Ca2+ Reach Millimolar Concentrations after Single Photon Absorption in Drosophila Photoreceptor Microvilli? -- ...
Calmodulin might be free to diffuse in the microvilli; however, in smooth muscle cells, diffusional freedom of calmodulin
we investigate the changes of ion concentrations in the microvilli
inside these microvilli peaks at 0.7 mM under these conditions.
http://www.biophysj.org/cgi/content/full/77/4/1811   (5845 words)

  
 Microvilli
Microvilli: Cytoplasmic projection from epithelial cells, usually containing microtubules; microvilli greatly increase the surface area of the small intestine.
http://bioweb.cs.earlham.edu/9-12/cellstructure/HTML/miv.html   (19 words)

  
 Role of Specialized Microvilli and the Fertilization Envelope in the Spatial Positioning of Blastomeres in Early ...
into the cytoplasm from the bases of the microvilli in unfertilized
Microvilli were lengthening with the elevation of the fertilization envelope, thereby transforming themselves into the fixing processes.
method, bundles of fibers could be identified within microvilli
http://www.biolbull.org/cgi/content/full/202/3/213   (4287 words)

  
 Microvilli - definition of Microvilli in Encyclopedia
A microvillus (usually not occurring alone, so usually referred to as the plural microvilli) is a small (5 µm) hairlike structure on the surface of absorptive and secretory epithelial cells to increase their surface area.
Embed a dictionary search in your own web page
http://encyclopedia.laborlawtalk.com/Microvilli   (71 words)

  
 microvilli - General Practice Notebook
Microvilli are most frequently found on the apical surface of cells.
Hence, microvilli are particularly numerous on the luminal side of the small intestinal epithelium - the layer of microvilli is termed the brush border.
The number and density of microvilli bears direct relation to the absorptive role of the cell, as they increase surface area of the membrane.
http://www.gpnotebook.co.uk/simplepage.cfm?ID=1986723899   (244 words)

  
 Epithelia Study Guide
Stereocilia look like thin irregularly distributed microvilli, however, because of their length, they were initially mistaken for cilia.
The micrograph below shows the actin filaments in the core of the microvilli.
The following photograph shows the difference between cilia and microvilli at the EM level.
http://cellbio.utmb.edu/microanatomy/epithelia/epith_lec.htm   (1779 words)

  
 SCD Autism Summary
But when the microvilli are damaged, the last stage of digestion cannot take place.
At this point only monosaccharides can be absorbed because of their single molecule structure.
Bacterial growth in the small intestine destroys enzymes on the intestinal cell surface, which prevents carbohydrate digestion and absorption.
http://www.geocities.com/momtobandj/SCD-autism-summary.html   (2450 words)

  
 Microvilli structures on B lymphocytes: inducible functional domains? -- Greicius et al. 16 (2): 353 -- International ...
Microvilli structures on B lymphocytes: inducible functional domains?
together, our results indicate that microvilli represent distinct
We previously found that these factors induce formation of microvilli
http://intimm.oxfordjournals.org/cgi/content/abstract/16/2/353   (254 words)

  
 Cytoplasmic Organelles [Page 3/10]
These microvilli are typical of the microvilli in the normal enterocyte.
Each microvillus is associated with a central, dense core of actin filaments.
Microvilli are found in the lumina of neoplastic and benign glands.
http://zappa.ultrakohl.com/EmOrganelle/organ3.htm   (82 words)

  
 Biotechnologisches Zentrum der TU Dresden
Prominin: A story of cholesterol, plasma membrane protrusions and human pathology.
Retention of prominin in microvilli reveals distinct cholesterol-based lipid microdomain within the apical membrane of epithelial cells.
A potential role of the lipid bilayer in the retention of prominin in microvilli.
http://www.biotec.tu-dresden.de/corbeil/publications_html   (755 words)

  
 Menu
This figure shows microvilli in an intestinal epithelial cell.
The components of the microvillus are shown below:
These form a "terminal web" and are connected by spectrin molecules.
http://www.cytochemistry.net/Cell-biology/actin_filaments.htm   (2155 words)

  
 microvilli Dr.Jastrow's EM-Atlas
Usually microvilli are closely stretching parallel to each other in so called brush seams of resorbing epithelial cells.
Microvilli strongly increase the cell surface area and thus raise resorption significantly (about 300 times).
Lots of different proteins often connected to enzymes are located in the outer cell membrane of microvilli of the epithelial cell of the gut.
http://www.uni-mainz.de/FB/Medizin/Anatomie/workshop/EM/EMMvilliE.html   (225 words)

  
 Human Microvilli TEM
Transmission electron microscope image of a thin section cut through a human jejunum(segment of small intestine) epithelial cell.
Image shows apical end of absorptive cell with some of the densely packed microvilli that make up the striated border.
http://remf.dartmouth.edu/images/humanMicrovilliTEM/source/1.html   (55 words)

  
 Microvilli
The microvilli are small hair-like projections on the surface of cells lining the small intestine.
They form a brushlike border that traps nutrient particles and helps transport them into cells.
http://www.earlham.edu/~henryia/nutrition/mvilli.html   (30 words)

  
 Holistic Health Encyclopedia - M
The morphology of macrophages varies among different tissues and between normal and pathologic states, and not all macrophages can be identified by morphology alone.
Among the cells now recognized as macrophages are histiocytes, Kupffer cells, osteoclasts, microglial cells, synovial type A cells, interdigitating cells, and Langerhans cells (in normal tissues) and epithelioid cells and Langerhans-type and foreign-body-type multinucleated giant cells (in inflamed tissues).
However, most macrophages are large cells with a round or indented nucleus, a well-developed Golgi apparatus, abundant endocytotic vacuoles, lysosomes, and phagolysosomes, and a plasma membrane covered with ruffles or microvilli.
http://www.findhealer.com/glossary/M.php3   (6171 words)

  
 Science - Education
Topics in Science Volume 3 uses graphics and animations to visualize and to provide insights into the following topics: Protein formation Cell membrane diffusion Immune system Chromosome, Hemoglobin, Sperm, Nerve Cell, Microvilli The content of this title is a subset of 'The Cell' program.
Size: 3167 KB topics in science V3
http://www.sharewareconnection.com/education-science-2.htm   (904 words)

  
 Temple's TangleWave Art Gallery: Microvilli
Microvilli, prismacolor, acrylic and oil on black board, 23"x17 1/2" © 1999
http://www.tanglewave.com/microvilli.html   (12 words)

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