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Tag: "become" at biology news

Why doesn't the immune system attack the small intestine?

...'s obvious that T cells must be able to ignore ?or become 'tolerized' to ?normal intestinal tissue," states Turley, who is also an assistant professor of pathology at Harvard Medical School. "But it has been unclear how dendritic cells, which are extremely sensitive to microbial agents such as bacteria, tea...

Vasectomy may put men at risk for type of dementia

...ose interest in their hobbies, family life and may become idle. As PPA progresses over a number of years, h...ly gambling, misspending large amounts of money or become sexually demanding. The most common form of dementia caused by brain deterioration in individual...

How badger culling creates conditions for spread of bovine TB

...e in the incidence of TB in cattle. Indeed, it has become apparent that the various strategies may actually have been a contributory factor to the increase in disease through perturbation. The results presented in this paper lend weight to this argument." "The development of successful strategies for the...

UW launches study testing adult stem cells for heart damage repair

... that supply oxygen-rich blood to the heart muscle become narrowed or blocked by plaque deposits and blood c... restored. CMI develops when the coronary arteries become so diseased that they limit the flow of blood to the heart and send small blood clots downstream, bl...

Scientists discover stage at which an embryonic cell is fated to become a stem cell

...ter cells towards the inside of the embryo. These become the inner cell mass of stem cells. Previously, it...ady apparent at the 4-cell-stage, before the cells become partitioned between the inside or outside of the embryo. And those differences depend on the orient...

New cell type identified in cancer development

...ncerous stem cell that can either remain benign or become malignant, depending upon environmental cues. The...m their immediate environment that directs them to become benign or malignant. Second, it seems clear that they can be detected and eliminated by a robust imm...

Scientists sequence genome of parasite responsible for common sexually transmitted infection

...vealing potential clues as to why the parasite has become increasingly drug resistant and suggesting possibl...e usually cure trichomoniasis, drug resistance has become an increasing concern. T. vaginalis is pear-shaped with thread-like flagella that propel its move...

Elucidation of the genome for diabetics with DNA chips

...he children of diabetic parents. These individuals become hyperglycaemic when they put on weight and are resistant to the insulin they produce. The team of Philippe Froguel was the first to identify a gene associated with DT2 ?that encoding glucokinase ?in 1992. Several other such genes have since been disc...

Scientists find potential 'off-switch' for HIV virus

...sions, however, a virus will infect the T cell and become dormant. Why this individual viral infection would not begin to replicate when others do remains a mystery. "It's somewhat like the unpopped kernels of corn left in the bottom of the bag when you take it out of the microwave," Weinberger said. "T...

20-year study shows significant rise in childhood obesity, especially among girls

...ity levels, young children, especially girls, have become much more overweight or obese in the last 20 years... the University of Chicago, USA. "As societies become more technological, various aspects of everyday life demand less and less physical activity and this...

Researchers from the UGR use a bacterium to obtain biopreservatives from food

...pes of protein exotoxins, and bacteriocins. It has become increasingly more necessary to find new antimicrobial agents because of the stronger resistance acquired by bacteria. Researcher Sánchez Hidalgo points out that natural antimicrobial cationic peptides such as bacteriocins "represent a good alternativ...

Large size crucial for Amazon forest reserves

... others because they don't colonize new sites that become available. The two processes may also act in combination, but different species follow different ways. The detailed treatment of the dynamics of 55 bird species allowed an unprecedented test of classical scientific hypotheses about the effects of r...

Post oak grasshoppers emerging

...to other chemicals. Once this has occurred, stains become very difficult to remove. The post oak grasshoppers become adults in late April, and from early May to mid-June the females lay their eggs in the soil. A femal...

DNA ends: Common tool, different job

...t chromosome ends, ensuring that these tips do not become targets for DNA repair." ...

OHSU lab finds meth receptor that could lead to therapy

...sity study found. The signaling system could soon become a target for therapies aiming to reverse meth’s adverse health effects as well as reduce the craving that drives its abuse. Working in the recently opened Program in Chemical Biology in the OHSU School of Medicine's Department of Physiology and Ph...

Are journal rankings distorting science?

...s developed as a simple measure of quality and has become a proxy for the importance of a journal to its field. But a report by the BMJ this week warns that the popularity of this ranking is distorting the fundamental character of journals, forcing them to focus more and more on citations and less on rea...

Elderly spinal cord injuries increase five-fold in 30 years, Jefferson neurosurgeons find

...inal cord rehabilitation centers as these patients become a larger proportion of the spinal cord injury (SCI) population. The findings were just presented by Jefferson neurological surgeons at a meeting in Phoenix, Ariz. of the Joint Section on Disorders of the Spine and Peripheral Nerves of the American As...

Antivirals effectively curb influenza virus

...81 percent the chance that an exposed person would become ill with influenza. The researchers' analysis found a significant reduction in infectiousness, as defined by reductions in influenza illnesses in household contacts, when oseltamivir was used for treatment of ill persons, but not when zanamivir was...

Intravenous nanoparticle gene therapy shows activity in stage IV lung cancer

...er cells but is frequently lost when normal cells become cancerous. Lu presented a poster on the study on April 17 at the late-breaking abstract session of the American Association for Cancer Research annual meeting in Los Angeles. Other attempts at gene therapy have employed an adenovirus to deli...

Stem cell transplants explored at Stanford as a possible treatment for hearing loss

...esearching the inner ear 12 years ago, and it has become more plausible as a result of his lab's successes in the field of stem cell research during the past seven years. Heller gained international attention in 2003 for identifying stem cells that reside within the inner ear. Since then, his research...

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