Tag: "vessel" at biology news
Growth Factor Contributes To Angiogenesis
...es and controls the process of angiogenesis (blood vessel
growth). A University of Michigan teamhas found t...utes to angiogenesis not only by stimulating blood vessel
growth,but also by prolonging the survival of blood vessel
cells. This finding has important...
Experimental Drug Derived From Snake Venom Shows Promise In Reversing Effects Of Stroke
...rhagic strokes, caused by a burst or leaking blood vessel
in thebrain." There are sharp contrasts between the treatments, however, says Sherman. TPA is administered in a single-dose, hour-long injection and resultscan be seen soon thereafter. ANCROD is given intravenously through a catheter...
Bone Marrow Transplants May Be Improved Thanks To Discovery Of Mechanism Underlying Human Stem Cell Migration
...r" which guides human stem cells through the blood vessel
walls into the marrow cavities. "We discovered that human stem cells are sort of like sailboats," Lapidot says."A sailboat will pick up the wind only if its sail is put up on the mast;similarly, stem cells will migrate to the bone marrow only if they...
UD Valentine Science: Cell "Dating" Habits May Promise Healthier Hearts
...hat form aframework for blood clots. When a blood vessel
is injured, biochemical catalysts (agonists) such asthrombin send signals into platelets, changing the shape of a receptor or"integrin" protruding from the cell's surface. A sticky, fibrous protein in thebloodstream, fibrinogen takes the hint, latchi...
Gene Influences Heart Disease And Stroke Risk Factors
...ong with fats and cholesterol,collect in the blood vessel
to form plaques. The plaques can block blood flowto the heart or brain, triggering a heart attack or stroke.Participants had no prior signs of heart disease and had not suffered a stroke. All participants were under 60 years of age. To detect early...
Researchers Find Fas Ligand Is Important In Blinding Disease
...FasL, the gldmouse, the investigators observed new vessel
growth 55 percent of the time. "When Fas l...grew around the laser spot. The amount ofnew blood vessel
growth was incredibly large." In addition to the observations in humans and mice, the invest...
UB Researchers Identify Specific Oral Bacteria Most Likely To Increase Risk Of Heart Disease
...rounddamaged tissue, such as a lesion in the blood vessel
or a replaced heart valve,which also can narrow blood vessels and cause clots, and 3) inducing plateletsto aggregate, which increases the chances of clots forming. "We've known for some time that oral bacteria can precipitate thesekinds of reactions,...
Hold The Salt: Gene May Explain African Americans' Extra Sensitivity To Salt, Leading To High Blood Pressure
... much, raising the pressure of blood flow on blood vessel
walls and,consequently, increasing the risk of high blood pressure. The researchers examined the influence of the ACE gene variant on blood pressureresponse to sodium intake in 81 African-American men and women who had normalblood pressure readings (...
New Protein-Like Polymer Shows Promise For Blood Vessel Replacement
...h of endothelial cells and could be used for blood vessel
replacement hasbeendesigned by researchers at the ...ged veins or arteries is donebyusing another blood vessel
from elsewhere in the person's body, generally asaphenousvein from the legs or the internal mammary ...
Risks For Heart Disease Associated With Size Of LDL Particles
... particles may more easily become trapped in blood vessel
walls thanlarger ones, possibly increasing risk for atherosclerosis. LDL particle size isdetermined using a technique called gradient gel electrophoresis that separatesLDL particles obtained from blood samples by their diameter and shape. ...
Coffee Without Addiction, Possible New Treatment For Osteoporosis, Wrinkle-Free Cotton, And More
...th of endothelialcells and could be used for blood vessel
replacements. Often, patients withhardening of the arteries cannot supply their own replacement blood vessels fromelsewhere in the body due to widespread atherosclerosis, making a polymer optionmore attractive. Environmental Contaminant Shown to Di...
Scientists Discover Important Molecular Link That Allows Cells To Form Blood Vessels
...hook up with each other and meet an existing blood vessel
to which theyconnect. Dr. Thomas O. Daniel, Catherine McLaughlin Hakim Professor of Medicine, likensthe process to someone driving a car down a street looking for a specificaddress. The driver reads the addresses one by one, recognizes the targetedad...
Seeking Life At Its Limits Leads To Antarctica
... trip toAntarctica aboard an ice-breaking research vessel
to study microorganisms andretrieve samples to analyze back in their laboratories. The National ScienceFoundation's "Life in Extreme Environments" (LExEn) program funded the work. "The data we gathered, plus the DNA samples and the live cultures we ...
Drug stops blinding blood vessel growth in mice
...day be able to pop apill to prevent blinding blood vessel
growth. Vessels that grow abnormally inthe eyes c...t ignites a chain reaction culminating in newblood vessel
growth. The switch is the VEGF receptor, a protein that isactivated by VEGF after which it activate...
Under the hood of a cellular transport machine
...mages of alien space ships locking into the mother vessel
(seevideo). The new insights come from combining an overall view of a barrel-shaped clathrinlattice, obtained using cryo-electron microscopy by Barbara Pearse andcolleagues at the MRC Laboratory for Molecular Biology in England, with the muchmore det...
Protein in eyes may be potential treatment for leading causes of blindness
...althy retina has beenshown to halt excessive blood vessel
growth in the eye and may one day be usedas a trea...turallyoccurring inhibitors that prevent new blood vessel
growth. Disruption of thiscontrol results in excessive growth of new vessels that plays a major role...
Mayo Clinic study shows dietary supplement may help fight heart disease
... lining of blood vessels (endothelium)to relax the vessel
wall and may inhibit the build-up of platelets and plaques. "These findings are exciting," Dr. Lerman says, "but we want to cautionpatients to discuss the use of L-arginine -- as the use of any supplement --with their physicians."...
Blocking VEGF can enhance radiation therapy
...the researchers exposedhuman tumor cells and blood vessel
cells in the test tube to VEGF, anti-VEGF andradia...fected tumor cells, but adding VEGFprotected blood vessel
cells from radiation and adding anti-VEGF made bloodvessel cells more susceptible to radiation. "The...
Young rats challenged as model for blood vessel response in older people
...rchers currently use young, healthy rats for blood vessel
research becausethey are more readily available, c...eutrophils do, in fact, accumulate and trigger the vessel
leakage that leads toinflammation and swelling, but in 2-year-old rats, no such accumulation occurs....
Mechanical forces found to exert larger role in blood vessel health and disease
...n laboratory tests with both human and bovineblood vessel
tissue. VEGF is multifunctional and, in addition t...he effects of fluid flow as it passes across blood vessel
walls.This transmural flow is six orders of magnitude or a million times slower thanblood flow and a...
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