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Tag: "vessel" at biology news

University of Pittsburgh School of Medicine researchers develop 'off-the-shelf' vascular grafts

...demonstrate the use of the tissue-engineered blood vessel in a larger animal model, such as a pig, which has a coagulation system more similar to that in humans. The advantage of our approach is that the graft could utilize the patient’s own stem cells and be ready for implantation almost immediately or, at...

Antarctic icebergs -- Hotspots of ocean life

...il. Then they sailed aboard the Antarctic research vessel Laurence M. Gould to reach their targets in the remote Weddell Sea, an arm of the Southern Atlantic Ocean that cuts into the Antarctic continent southeast of Cape Horn. The icebergs in the study were up to a dozen miles long and more than 120 feet hi...

Targeting sugar on blood vessels may inhibit cancer growth

...Medicine have targeted a sugar that supports blood vessel growth in the tumor. Their findings will be published in the May 7 on-line issue of Journal of Cell Biology. Lung cancer is the most common cause of cancer death and an area where novel therapies to block metastasis are desperately needed, accord...

Students invent protective pouch to enhance cell therapy

...d within the nylon mesh. Blood flowing through the vessel should nourish the encapsulated cells and circulate the proteins, such as insulin, produced by these cells. The project is important because it could lead to better results from cellular therapy, in which live cells are injected to repair or repla...

From the deep -- Researchers find new species of sea anemone

...onterey Bay Aquarium Research Institute's research vessel the Western Flyer. Pearse is a research associate at the Institute of Marine Sciences at the University of Santa Cruz. It's customary to name a newly discovered plant or animal species after the person who found it, or after the place where it was...

Nanotextured implant materials: blending in, not fighting back

...ntly only about 30 percent of small diameter blood vessel grafts (less than 6 mm diameter) last more than fi...PLGA, a biodegradable polymer often used for blood vessel grafts, so they came out completely covered with bumps that were 100, 200 or 500 nanometers in diame...

Researchers identify ovarian cancer biomarkers

...and Italy, used a laser technique to isolate blood vessel cells from 21 ovarian tumors and four normal ovari... normal reproductive tissues that experience blood vessel growth, such as the placenta or endometrium. This suggests that the markers are specific to tumors a...

A genetic 'gang of 4' drives spread of breast cancer

...rowth and spread." Microscopic analysis of blood vessel structure in the tumors revealed that knocking down all four genes greatly reduced growth of the tangle of blood vessels typically seen in tumors. Further experiments revealed that the tumor blood vessels that did form allowed fewer cancer cells to e...

Scientists discover how body fights to control spread of cancer

...vents the cancer cells from attaching to the blood vessel wall which causes secondary tumours. We have disc...f the cell allow the cancer to attach to the blood vessel wall. The cancer cells then eventually penetrate the blood wall to form tumours at secondary sites....

Blame the brain for high blood pressure

...rapy for hypertension with drugs that reduce blood vessel inflammation and increase blood flow within the brain. The future challenge will be to understand the type of inflammation within the vessels in the brain, so that we know what drug to use, and how to target them. JAM-1 could provide us with new clue...

UW launches study testing adult stem cells for heart damage repair

...owth factors, genes or stem cells to promote blood vessel or tissue growth," explains Amish Raval, head of cardiovascular regenerative medicine at UW Health. The goal with this approach, he says, is to promote either angiogenesis, which is the growth of new capillaries; arteriogenesis, or the maturation a...

White blood cells in lung produce histamine seen in allergies

...In both, we observe inflammation –?swelling, blood vessel leak, and muscle contraction that narrows the airway." The study appears in the January 2007 issue of the Journal of Experimental Medicine. Caughey was investigating the well-known fact that upper respiratory infections often trigger acute asthm...

Flavanols in cocoa may offer benefits to the brain

...utrient abundant in fresh cocoa, may improve blood vessel function. Now, scientists believe the potential b...hat the same mechanism resulting in improved blood vessel function that he and others have observed following consumption of Mars?special cocoa could also be ...

Tiny clue reveals new path toward heart disease

...f atherosclerosis in human aortas, the large blood vessel that brings blood from the heart to all parts of the body. Kalirin contains the hereditary information for the production of a protein that is involved in the migration of cells from one spot to another within smooth muscle. According to the resea...

DNA layer reduces risk of reserve parts being rejected

... for example, be adapted to promote bone and blood vessel formation. The good research results led to the patenting of DNA coatings for implants. A biomedical company is currently investigating whether they can take over the patent. Layer-by-Layer deposition technique. With this technique, ultra-thin DN...

Engineering the heart piece by piece

...The growing of heart muscle, heart valve and blood vessel tissue in the lab also requires careful control of conditions such as temperature, oxygen and carbon dioxide levels, nutrients and pH level. This can then encourage the cells to begin producing the kinds of molecules needed to signal to and connect w...

New measure of sexual arousal found for both men and women

...ndly. This may be the first test to diagnose blood vessel blockage as a cause of sexual dysfunction in women, and may help identify those patients who may be helped by vasoactive drugs similar to those prescribed for men with erectile dysfunction from narrowed blood vessels." ...

Nanoparticles can track cells deep within living organisms

... investigation in therapies that enhance new blood vessel growth to improve the blood supply to diabetic patients' limbs or to repair blood vessels after a heart attack or bypass surgery. Tracking nanoparticle-labeled cells used in such treatments by MRI imaging would allow physicians to monitor the treatme...

Anti-fungal drug stops blood vessel growth

...nesis drug. In mice induced to have excess blood vessel growth, treatment with itraconazole reduced blood vessel growth by 67 percent compared to placebo. “We were surprised, to say the least, that itraconazole po...

Cancer cells forming blood vessels send their copper to the edge

...t against cancer. One element critical to blood vessel growth is copper, a vital nutrient that plays important roles in many life processes. Compounds that reduce copper in the body without disrupting the body's normal functions can inhibit the growth of blood vessels ?and some of these compounds are eve...

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