Popular Articles

Blood-Borne Molecule Helps Regulate Blood-Vessel Integrity
Although maintaining the integrity of blood vessel walls is essential for life, well-controlled temporary leakage of blood contents through the walls of blood vessels into the tissues is a hallmark of inflammation. Although the molecule S1P is known to act on the cells that line blood vessels (endothelial cells) to regulate the permeability of blood vessel walls, the in vivo of SIP in this process remains unknown, and whether it has a role in inflammation has not been determined. In a new study, Shaun Coughlin and colleagues, at UCSF, San Francisco, have shed light on these issues, revealing that mice that lack S1P selectively in plasma (the liquid component of blood) have increased leakage from the blood vessels in response to a variety of stimuli, including inflammatory ones. As the leakage was reversed by treatment with either S1P-containing red blood cells or an agonist for the protein to which SIP binds, the authors conclude that S1P in the blood regulates blood-vessel integrity and prevents potentially lethal decreases in blood volume after exposure to leak-inducing stimuli.

Expert Discusses HIV-Related Kidney Disease, Susceptibility Among Blacks
The New York Daily News profiled Paul Klotman, chair of the Samuel F. Bronfman Department of Medicine at Mount Sinai, who is "one of the world"s leading experts on the kidney diseases associated with HIV." In the article, Klotman discussed the clinical details of HIV-associated nephropathy (HIVAN), including treatment, causes and symptoms. According to the Daily News, doctors estimate that two million to four million people of African heritage have HIVAN, including between 4 percent and 12 percent of blacks with HIV in the U.S. The article continues, "In recent years, doctors have made tremendous advances in their understanding of both HIV and its associated kidney disease." Klotman said, "In thinking about a cure, we know now that we have to clean out the brain and the kidney. Those are things we have to know if we can ever achieve a cure for AIDS" (Charles, 7/22).
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New Figures Reveal Ethnic Minorities Are Not Aware Of Their Cancer Risk
Despite growing evidence that cancer is becoming more prevalent amongst ethnic minority groups, news figures out today at the start of Ethnic Minority Cancer Awareness Week show that cancer awareness levels are critically low amongst this cohort.
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A Group Of Proteins Highly Effective At Killing Bacteria And Which Could Hold The Key To Developing New Types Of Antibiotics To Be Studied

Researchers from the Universities of York and Leeds have been awarded ÷£3.3m from the Biotechnology and Biological Sciences Research Council (BBSRC) to find out how a family of proteins known as colicins force their way into bacterial cells before destroying them. The team, led by Professor Colin Kleanthous, from the University of York"s Department of Biology, will develop earlier research that suggests colicins use decoys to mimic key parts of the cells" own protein machinery to evade their defences. Professor Kleanthous said: "Colicins are the weapon used in the biological warfare that takes place between competing bacteria. Understanding how this group of proteins work could help scientists develop new drug delivery methods to target the bacteria that cause diseases in people." "It"s as though the colicins are carrying the equivalent of hand grenades which they can deploy without harming themselves," said Professor Sheena Radford of the University of Leeds" Faculty of Biological Sciences. The five year programme of research aims to discover how colicins specifically penetrate Gram-negative bacteria which are protected by two membrane barriers. It will involve collaboration between six groups of scientists from the Departments of Biology and Chemistry at the University of York and the Astbury Centre for Structural and Molecular Biology, Faculty of Biological Sciences, at the University of Leeds. James Reed University of York


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