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Tag: "tissue" at biology news

Stem cells engage in dialogue with the cells that regulate their futures

... your stem cells can replenish themselves and your tissue cells throughout your lifetime. Problems in the niches can lead to diseases in the body. For example, if cell multiplication in a niche gets out of hand, cancer might form. A decline in cell production might contribute to the frailty of old age. ...

The effects of smoking on fractures and ligament injuries

...fections and smoking has been shown to impair soft tissue wound healing. Two new studies, funded by the Nati...atrix, the material outside of cells that provides tissue support. The results showed for the first time that cellular density in mice increased between 3 and...

MRSA toxin acquitted: Study clears suspected key to severe bacterial illness

... CA-MRSA infections are localized to skin and soft tissue and usually can be treated effectively. CA-MRSA strains have enhanced virulence, meaning they can infect otherwise healthy people. One of the biggest problems with CA-MRSA skin infections is that they spread rapidly and have the potential to cause il...

German researchers develop first non-invasive test to measure skin aging

... of the imaging techniques had only been tested on tissue extracted from live patients. Last year, Sung-Jan ...k of a patient's dermis need to remove a sample of tissue and analyze it in the lab, under a microscope or by other methods. In particular, it is impossible t...

Math model predicts cancer behavior

...." A tumor that does not penetrate the surrounding tissue can often be surgically removed with curative succ...ent concentrations and the landscape of connective tissue that surrounds the cells. They were surprised to find that the microenvironment around the tumor det...

New way of tracking muscle damage from radiation

...uscles before and after radiation therapy for soft tissue sarcoma and Ewing sarcoma are related not only to ...ention to prevent late damage," Krasin said. Soft tissue sarcomas are cancers that arise in muscles, fat, blood vessels and other soft tissues. Ewing sarcoma...

Molecular 'marker' on stem cells aids research, perhaps therapies

...onsideration, for example, in applications such as tissue engineering, where only bone-generating cells are ...based scaffolding, with the goal of producing soft tissue for reconstruction or augmentation, or to shore up bones left fragile by age or disease. “With a ...

Smashing the time it takes to repair our bones

...ones. "This device is about trying to grow bone tissue in the same environment our body grows bones. I ha...stimulants to extract a beneficial environment for tissue growth," he said. Dr Hannay's research has advanced the understanding of how bone cells can be st...

Bones at the nanoscale

...patite. These com-ponents make this biomineralized tissue highly strong and tough. at the same time, In orde...gid unit at the next level and so on, enabling the tissue to sustain large strains. This is why the brittle apatite remains shielded from excessive loads and ...

Vanishing beetle horns have surprise function

.... They do, the scientists say, but the nubile horn tissue is reabsorbed before the beetles' emergence as adu... had a function, the scientists destroyed the horn tissue of beetle larvae using electrosurgery: minute voltage arcs that permit precise destruction of target...

Peering into the shadow world of RNA

...tical processes as embryonic development, cell and tissue differentiation, and cancer formation. A review of current research in this still-developing area of biology, authored by Kazuko Nishikura, Ph.D., a professor in the Gene Expression and Regulation Program at The Wistar Institute, appears in the De...

Scientists show drug can counteract muscular dystrophy in mice

...ge, the muscles of the MD mice showed much fibrous tissue and infiltration of inflammatory cells. Unlike healthy mice, the mice with MD were unable to either run on a treadmill or swim. MD mice given TSA daily for two to three months, however, were virtually indistinguishable from healthy mice, and biophys...

Newts which regrow their hearts

...tely after a heart attack and the destroyed muscle tissue scars over instead, following damage, a newt’s h...is could be a reason why the regeneration of heart tissue does not require a blastema." The researchers in Bad Nauheim found no indication that stem cells wer...

Discovery of the first resistance gene to rice yellow mottle virus

...aracterized by the appearance of mottling and then tissue death on the leaves. The fertility and development of seeds are affected, which causes considerable yield losses at harvest. Transmission of RYMV occurs by way of insect vectors or by straightforward contact between plants. Prevention measures, lik...

HIV-1 kills immune cells in the gut that may never bounce back

...o four weeks after contracting HIV-1, the lymphoid tissue layer in the mucous membrane of a patient's gastrointestinal (GI) tract can lose up to 60 percent of its CD4 memory T cells -- immune cells responsible for recognizing invaders and priming other cells for attack. Intrigued, Martin Markowitz, an Aaron...

Fantastic Voyage: A new nanoscale view of the biological world

...A, sugar and fatty acids at a subcellular level in tissue sections or cells. "Using MIMS, we can image and quantify the fate of these molecules when they go into cells, where they go, and how quickly they are replaced," says Lechene. The method does not need staining or use of radioactive labelling. Inst...

Natural anti-viral enzyme helps keep cancer cells alive, researchers find

... immune system fights cancer and also helps create tissue environments permissive to cancer, Dr. White said, but a cancer-promoting role for the host defense response has not been previously seen. It's a straightforward matter to block the action of TBK-1, so this might be a promising avenue for new cance...

PET imaging shows young smokers quick benefit of quitting

...etabolic activity and generates images of organ or tissue function?will continue to provide insight into coronary risk analysis and risk management (such as smoking cessation and lowering one's cholesterol)," he added. In the Hokkaido University study, researchers examined the effects of smoking cessatio...

Environmental toxins may cause body's defenses to worsen lung disease

... to attack stressed (damaged) lung tissue. "When tissue is exposed to a pathogen (disease-causing agent), ...tely wants to destroy the damaged cells so healthy tissue can take over," explains Borchers, assistant research professor of environment health at UC and prin...

Hopkins scientists link immune response to 'ghost' parasites and severely congested sinuses

...ericans suffer from persistent inflammation of the tissue that lines the nasal and sinus cavities, according... from coming back. They also had nasal polyps, or tissue outgrowths resulting from the inflammation, which, Lane says, are particularly hard to treat. In...

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