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Tag: "die" at biology news

Virus has 'catastrophic' affect on red squirrels, research shows

...s on their face, feet and thighs, and they usually die within two weeks. The research team - Newcastle University, Queen Mary, University of London, and other partners* - makes its recommendations for grey squirrel management in two academic journals, Epidemiology and Infection and Biological Conservat...

Life and death in the hippocampus: what young neurons need to survive

...hether newborn nerve cells in adult brains live or die depends on whether they can muscle their way into networks occupied by mature neurons. Neuroscientists at the Salk Institute for Biological Studies pin-pointed the molecular survival gear required for a young neuron to successfully jump into the fray...

Researchers find cause of frontotemporal dementia

...other types of brain diseases in which brain cells die off ?such as Alzheimer's disease and Parkinson's d...ects the frontal lobe, causing the brain tissue to die off. The frontal lobe is the foremost part of the brain and accounts for about 30% of the brain's ma...

A protein complex that untangles DNA

...onsists of about 50,000 billion cells, 1% of which die and are replaced by cell division every day. In order to ensure cell survival and controlled growth of these new cells, the genetic information, stored in DNA molecules, must first be correctly copied and then accurately distributed during cell divis...

Bedsores and bald hides: Novel roles revealed for a 'scaffolding' protein

...s out that without K17, cells in the hair follicle die too soon, which results in a thin coat of fragile hair, a condition resembling alopecia or thinning, balding hair. That the hair is fragile is not surprising given that K17 is a keratin protein, known to provide structure and strength, says Coulombe....

Finding paves way for better treatment of autoimmune disease

... that if you block this enzyme, almost all T cells die after three days but the regulatory T cells can survive," says Dr. Makio Iwashima, MCG immunologist and the study's corresponding author. "After three days, we give them some food to grow and, in one week, you get about 90 percent pure regulatory cel...

Genetic snooze button governs timing of spring flowers

...e second year, the plants flower in the spring and die back in the fall. That biennial strategy, Amasino explains, arose as flowering plants, which first evolved some 100 million years ago during the age of the dinosaurs, spread to fill the niches of nature. Spring blooming confers numerous advantages,...

Scientists identify protein with a crucial role in cell death

...go with it, are largely attributable to cells that die off in a controlled manner. Therefore, gaining bet... Controlled cell death During our lifetime, cells die off in a controlled manner ?a process called apoptosis. In addition to supplying energy, mitochondri...

New flood-tolerant rice offers relief for world's poorest farmers

... thrives in standing water, like all crops it will die ifcompletely submerged for more than a few days. T...hstand submergence atall, most rice varieties will die if fully submerged for too long.When the plant is covered with water, its oxygen and carbon dioxides...

Salk and Stanford teams join forces to reveal two paths of neurodegeneration

...ed or seriously injured by disease in adults, they die and are removed by degeneration. Scientists have speculated that the same molecular shears used to trim axon branches in injured adult axons also do so during normal developmental pruning. In a forthcoming issue of Neuron, teams at the Salk Institu...

Gene therapy injected into the brains' of mice with Huntington's disease

...ngthen and protect brain cells that would normally die in this disease. The other neural nutrient is called neurturin (NTN). GDNF and NTN also increase production of the chemical neurotransmitter dopamine, which sends signals in the brain that enable people to move smoothly and normally. Ceregene, Inc, ...

Researchers unveil strategy for creating actively-programmed anti-cancer molecules

...year and that more than 40,000 of these women will die of the disease-usually the end result of metastasis. The therapeutic use of monoclonal antibodies has expanded rapidly over the last several years precisely because of their long half-life, combined with their overall lack of toxicity and the fact ...

UCSD researchers develop 'smart petri dish'

...ver cells are much more discriminating and quickly die when removed from the body. But by designing a porous silicon chip with miniature wells similar to those in muffin tins, the UCSD researchers were able to mimic the extracellular matrix of the liver and keep the liver cells alive. On this chip, ind...

New research promising for improving brain cell survival after brain injury

...actors' that cause surrounding, healthy neurons to die en masse. "This treatment to prevent brain damage has wide application and could be given to car accident and assault victims, people undergoing radiotherapy for brain tumours, premature babies that need to be induced, and stroke patients. "Whi...

Hope I die before I get old?

... rock star Pete Townshend wrote the line "I hope I die before I get old" into a song, "My Generation" that launched his band, the Who, onto the rock 'n' roll scene. But a unique new study suggests that Townshend may have fallen victim to a common, and mistaken, belief: That the happiest days of people'...

Immune system police learn early and sometimes badly

...s. It's a brutal process ?95 percent of the cells die in the thymus primarily because they recognize body tissue ?that winds down after puberty. All T cells wear their receptors for life, like signature hats. "We decided to compare receptors on the regulatory cells in the periphery with those in the t...

How bad is malaria anemia? It may depend on your genes

... almost half of the 2 million people worldwide who die each year of malaria. The culprit is a protein cells make in response to inflammation called MIF, which appears to suppress red blood cell production in people whose red blood cells already are infected by malaria parasites. The parasite that caus...

Mechanism for neurodenegerative diseases linked to transport proteins

... through a pattern in which the neuron's terminals die before the cell body. PolyQ genes are expressed in... polyQ diseases that explains why only nerve cells die and why the terminals die before the cell body. The link to the activation of the JNK enzyme suggest...

Gene discovery opens door to tackling disease

... in Australian women, and about 2500 women and men die each year from breast and prostate cancer. ...

Higher levels of obesity associated with greater health risks

...Overall, extremely obese women were more likely to die over the average 7.0 years of follow-up than were women in other examined weight categories. Modeling analyses adjusted for age, smoking status, educational achievement, U.S. region, and physical activity level showed that weight-related risk for all...

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