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Tag: "affecting" at biology news

Drugs from the deep blue

...ling microbes, stopping growth of cancer cells, or affecting the flow of calcium in and out of cells. Marine natural products are an eclectic mix of chemical types, drawing on all the pathways of metabolism, Molinski said. Some are related to fats and proteins; others include elements such as bromine, sometim...

Mosquitoes are more attracted to individuals infected with malaria

...ng problem in Africa and understanding the factors affecting its transmission remains a crucial part of the effort to combat the disease. A new study published in the premier open access journal PLoS Biology conducted in Western Kenya by Jacob Koella and colleagues now reveals that mosquitoes are more attracte...

Promising therapies for haemophilia & heart disease

...emophilia is a hereditary blood disease, primarily affecting males, where the blood fails to clot causing potentially life-threatening 'bleeds'. About one in 6000 Australian males is born with haemophilia in severe, moderate or mild form. People with haemophilia rely on intravenous infusion of recombinant Fact...

Researchers Discover Gene That Determines Asthma Susceptibility By Regulating Inflammation

...bled in the past two decades in the United States, affecting 20 million Americans. Controlling inflammation is a focus of asthma therapy. Inflammation occurs when certain cells migrate into the airways. These “inflammatory?cells release reactive oxygen species (ROS), causing the airway lining to swell and rest...

Virus uses tiny RNA to evade the immune system

...sion promote escape from antiviral T cells without affecting virus growth. "Viruses can use the host RNA inference machinery, which is often speculated to have evolved as an antiviral mechanism, to generate small RNAs that serve their own purposes -- the latest chapter in the long cat-and-mouse game known to ...

High carbon dioxide levels spur Southern pines to grow more needles

.... McCarthy's findings showed that the factor most affecting needle volumes was the amount of nitrogen present in the soils. Since much of the forested area was once overused farmland, local soils tend to be nitrogen deficient. Her results showed that needle enhancements in CO2-treated trees were insignifican...

Life's origins were easier than was thought

... the replication process of ribozymes without this affecting its functioning, is higher than was previously calculated. In practice, this means that the first riboorganisms (protocells in which RNA is responsible for genetic information and metabolic reactions) could have a much bigger genome than was previous...

Stressed cells spark DNA repair missteps and speed evolution

...ase mutations, most of the errors are neutral, not affecting cells at all. Many are deleterious, resulting in cell death. But a small percentage is advantageous, allowing the cells to survive in an adverse environment. The fact that the changes in the rate of mutation occur only in a certain physical space a...

Protein amplification in melanoma is possible drug target

...so predispose people to autoimmunity, particularly affecting the thyroid gland and resulting in thyroid hormone insufficiency. Finally, people with CVID are susceptible to B-cell lymphomas. The researchers, led by Raif Geha, MD, and Emanuela Castigli, PhD, in the Division of Immunology at Children's Hospital ...

Progress on HIV/AIDS significant but insufficient

...he pandemic had also grown disturbingly worldwide, affecting new countries and new populations within countries, particularly women and girls, and 95 per cent of those infected were in low- and medium-income countries. Given the quantum worsening in the epidemic's trajectory, Joint United Nations Programme on...

Gene for immune deficiency syndromes found

...so predispose people to autoimmunity, particularly affecting the thyroid gland and resulting in thyroid hormone insufficiency. Finally, people with CVID are susceptible to B-cell lymphomas. The researchers, led by Raif Geha, MD, and Emanuela Castigli, PhD, in the Division of Immunology at Children's Hospital ...

Targeting a key enzyme with gene therapy reversed course of Alzheimer's disease in mouse models

...f dementia among the elderly in the United States, affecting 4.5-5 million adults - 10 times more than those affected by Parkinson's disease. Starting with mild memory problems and ending with severe brain damage, Alzheimer's usually begins after the age of 60, the risk increasing with age. ...

Vineyard weeds found to host Pierce's disease of grapes

...grapes, one of the most destructive plant diseases affecting grapes. Pierce's disease is caused by Xylella fastidiosa, a bacterium transmitted by sharpshooters and spittlebugs. In response to outbreaks of Pierce's disease in central California, plant pathologists studied 29 weed species commonly found in Cali...

Naturally occurring asbestos linked to lung cancer

...isk factor for mesothelioma, a rare form of cancer affecting the lining of the lung. But in the new study, researchers found a consistent and dose-dependent association between mesothelioma and residential proximity to ultramafic rock, the predominant source of naturally occurring asbestos. "Our findings indi...

Industrial contaminants spread by seabirds in High Arctic, new Canadian study shows

...an, where we generally assumed they were no longer affecting terrestrial ecosystems. Our study shows that sea b...ontaminants in coastal areas to levels that can be affecting those ecosystems." ...

South Africa still debating how to tackle HIV/AIDS when 5 million are infected

...g part in a US-funded programme to see how AIDS is affecting its combat-readiness, and this includes giving anti-retroviral drugs (ARVs) to some 1,000 soldiers. ...

President Bush's cut to AIDS prevention in Africa would be devastating

...er the logging ended. "We know land-use change is affecting wildlife species," Gillespie said. "We know that t...eally looked at how parasites and disease might be affecting this relationship. We were surprised to find dramatic patterns across the board, where the species o...

Affymetrix and ParAllele Launch Industry's Most Comprehensive Product Line for Targeted Genotyping

...er the logging ended. "We know land-use change is affecting wildlife species," Gillespie said. "We know that t...eally looked at how parasites and disease might be affecting this relationship. We were surprised to find dramatic patterns across the board, where the species o...

Logging changed ecological balance for monkeys, damaged health

...er the logging ended. "We know land-use change is affecting wildlife species," Gillespie said. "We know that t...eally looked at how parasites and disease might be affecting this relationship. We were surprised to find dramatic patterns across the board, where the species o...

Investigating 'brain shrinkage' in alcoholics

...y ensue along with neural systems damage, commonly affecting frontal lobe based systems and their functions, which include decision making, inhibition, problem solving, and judgment. This is part of the dynamic course of alcoholism that likely contributes to its maintenance. In the symposium, [we presented] da...

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