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Tag: "causes" at biology news

Fungus Effective Against Winged Termites

...orm of the termite. The invasive Formosan termite causes hundreds of millions of dollars in damage and control costs each year. Emerging in late April through June, the winged adults fly briefly before they drop to the ground, shed their wings and find a mate with which to start a new colony that may grow ...

Researchers Identify Cause of Early Bird Sleep Disorder

...ues had discovered an entirely different gene that causes a similar clock-shift. Both arise because of so-ca...periments with the second gene suggests the change causes a protein -- an enzyme called a kinase that is made by the gene - to be less active than normal. Th...

Shark attack worries? Driving to the beach is more deadly

...McEachran says shark attacks are far less frequent causes of injury than driving, boating and diving accidents. He says when most attacks occur, they happen in 3 to 4 feet of water. "But often, that can mean you're several hundred feet away from the beach," he notes. "Also, most attacks occur in water that...

New HIV drug candidate developed in Sweden

...McEachran says shark attacks are far less frequent causes of injury than driving, boating and diving accidents. He says when most attacks occur, they happen in 3 to 4 feet of water. "But often, that can mean you're several hundred feet away from the beach," he notes. "Also, most attacks occur in water that...

Agilent Technologies introduces advanced zebrafish, mouse microarrays for stem cell and developmental biology research

...McEachran says shark attacks are far less frequent causes of injury than driving, boating and diving accidents. He says when most attacks occur, they happen in 3 to 4 feet of water. "But often, that can mean you're several hundred feet away from the beach," he notes. "Also, most attacks occur in water that...

Whole genome promoter mapping - Human Genome Project v2.0?

...understanding is vital for determining the genetic causes of, and possible genomic solutions for, diseases such as cancer. "Medicine is increasingly turning towards the idea of using genetic markers for diagnosis and prognosis, or determining personalized therapies, so-called pharmacogenetics, but we don't ...

$5.1 billion would save 6 million children

...reviously shown to reduce mortality from the major causes of death in children younger than age 5 years. The...earchers also ensured that treatment for the major causes of child death were available to all children who needed them. Universal coverage levels from 2000 f...

Chronic Sinus Infection Thought To Be Tissue Issue, Mayo Clinic Scientists Show It's Snot

... mucus into account when trying to understand what causes chronic sinus infections and probably other airway diseases." The findings could significantly change the way chronic sinus infection is treated, according to Dr. Ponikau. "This has far-reaching implications," says Dr. Ponikau. "This suggests a ben...

Understanding how bacteria communicate may help scientists prevent disease

...e is initiated in the receptor protein, which then causes a series of further changes within each bacterium....group is working on V. fischeri, the bacteria that causes luminescence and whose genome has recently been sequenced ("Complete genome sequence of Vibrio fisch...

U of T researchers map role of Epstein-Barr virus in cancer

...d in the Epstein-Barr virus immortalizes cells and causes them to continuously grow, thereby predisposing pe...o cause cancer, like the human papillomavirus that causes cervical cancer for example, have been shown to work through this p53 protein, but up until now, no ...

Cancer drug slows poxvirus in mice

...gators because mutation of one family member, Abl, causes a rare form of cancer known as chronic myelogenous leukemia (CML). Gleevec inhibits Abl-family tyrosine kinases and has proved very useful in treating CML. To learn whether Gleevec could prevent or lessen vaccinia's ability to spread in a living org...

Malaria mechanism revealed

...in the July 29 issue of the journal Cell. Malaria causes approximately 400 million clinical cases and 2 million deaths annually, with more than 80% of deaths occurring among children. The disease is caused by mosquito-borne parasites of the genus Plasmodium (primarily Plasmodium falciparum). Following the ...

Studies reveal how plague disables immune system, and how to exploit the process to make a vaccine

...cell. It also suppresses the immune response. LcrV causes affected cells to release 40 times the normal leve...ts secretion of tumor necrosis factor (TNF), which causes inflammation. "LcrV is secreted in massive amounts via the type-III pathway during an infection," S...

Immune system's distress signal tells bacteria when to strike back

...olecular weapons known as PA-I and Pyocyanin. PA-I causes the barrier cells that line the host's bowel to become more permeable, which renders them more susceptible to the microbe's toxins. Pyocyanin enhances the germ's ability to pass through the weakened bowel wall, enter the bloodstream and invade tissue...

Enzyme's newly discovered role may make it target for arthritis treatment

...rincipal type of treatment for HIV, the virus that causes AIDS, inhibits proteases, so scientists who try to block cathepsin G's role in inflammation will already have an extensive body of research results to refer to. Pham's lab uses mouse models of arthritis to study the contributions of proteases and ot...

Study finds adult stem cells can replicate

...rincipal type of treatment for HIV, the virus that causes AIDS, inhibits proteases, so scientists who try to block cathepsin G's role in inflammation will already have an extensive body of research results to refer to. Pham's lab uses mouse models of arthritis to study the contributions of proteases and ot...

The making and breaking of microtubules

... GTP is bound to tubulin molecules. If GDP somehow causes protofilaments to curl up tightly, GTP does the opposite, causing protofilaments to straighten and assemble themselves into microtubules. But because GTP can rapidly hydrolyze into GDP, capturing transitional states of GTP-bound tubulin directly was ...

Researchers make headway in mystery of migraines

... the MUHC have made progress in understanding what causes migraines. The research, published in the new issue of the Proceedings of National Academy of Sciences (PNAS), reveals how gene mutations known to cause a form of inherited migraine--the kind that cause debilitating headaches and light flashes known ...

Mosaic mouse technique offers a powerful new tool to study diseases and genetics

...Before cell division is complete, a special enzyme causes the exchange, or recombination, of the two engineered chromosomes. If one of those chromosomes contains a bad copy (mutation) of a gene, the recombination event could cause an offspring to inherit two bad copies of the gene, which would result in a m...

Any exposure to tobacco smoke during pregnancy is risky

...lysis shows not only that smoking during pregnancy causes genetic damage in the developing fetus that can be...rth, but also that passive ?or secondary ?exposure causes just as much damage as active smoking, and it is the same kind of damage," said Dr. Grant, whose pri...

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