Nitric Oxide May Hold Key To First Treatment For Deadly Form Of Malaria, Duke Scientists Report
...tancein acute health care. When bacteria invade the body, the immune system floods the bacterialcell with noxious oxygen and nitrogen-free radicals. The researchers found that when NO enters a bacterium, the NO attachesto a particular place on proteins called a thiol, a protein subunit th...Nitric Oxide Found To Control Cells By Turning On Genes; Suggests New Role In Health And Disease
...tancein acute health care. When bacteria invade the body, the immune system floods the bacterialcell with noxious oxygen and nitrogen-free radicals. The researchers found that when NO enters a bacterium, the NO attachesto a particular place on proteins called a thiol, a protein subunit th...New Vaccine Blocks Viral Entry In Cattle, May Have Implications For Human Vaccines
...ne system? It fights off bacteria and viruses that invade our bodies. How about a new type of vaccine -- one that stops dangerous viruses from even entering the body? Geoffrey Letchworth, a virologist in the Department of Animal Health and Biomedical Sciences, has developed such an experimental vaccine fo...Gene Shears In Cutting Edge Anti-Aids Trial
... HIV beingproduced by infected cells before it can invade healthy cells. The clinical trial uses a harmless virus as a "taxi" to insertthe ribozyme into the target CD4+ cells. The ribozyme acts by slicing upthe messenger RNA which instructs the HIV-infected cell how to make newinfectious HIV particles. T...Low Oxygen, Key To Fetal Development, Also Offers Cancer Clues
... cells eventually evolve intotumor-like cells that invade the mother's uterus and establishblood flow to the...weeks ofpregnancy, the cells proliferate but don't invade the uterus.Later in pregnancy, when oxygen levels increase, the cells stopdividing and instead invad......nteractions take place that signal the bacteria to invade and infect the plant.In their study, Colorado State researchers found that plants that are notspecific hosts for these gram-positive bacteria display a much differentreaction known as a suicide response. Like an internal quarantine, the plantprotects...Careful Honeybee Breeding Combats Tracheal Mite Pests
...nue to spread because healthy bees from otherhives invade these weakened colonies to steal honey, and they carry trachealmites back with them.” Since the 1980s, bees in the United States have begun to develop theirown resistance -- slowly. Cobey said the process normally takes decades. ...Condom Use In Thailand Dramatically Cuts HIV Infection
...ks in the skin in the genitalarea, allowing HIV to invade the body more easily, and increase the number ofimmune system cells called macrophages and T cells, which are the preferredtargets of HIV. T cells serve as "factories" that produce more of the virus. The Hopkins study followed two groups of ...Virulent Fungus Devastating Potato Crops
...rage. Bacteria that cause soft-rot diseases often invade potato tubers infected with late blight, literally resulting in a "meltdown" of stored potatoes. Under severe infection, entire storages have to be discarded. Scientists began noticing late blight's resistance to metalaxl as long ago as 1980, Fry sa...Research Indicates Molecule Sabotage May Slow Brain Cancer
...dvances our basic understanding of howglioma cells invade healthy brain tissue and provides a new animal model thatcan be used to evaluate future therapies," says Lois Lampson, PhD, an expert onbrain tumor biology and an associate neurology professor at Brigham and Women'sHospital and Harvard Medical Schoo...New Look At How Cells Move Could Shed Light On Tumor Growth
... Huttenlocher said. "A tumor should notbe able to invade and metastasize if the individual cells can't move awayfrom each other." In addition to gaining the ability to stop cell migration, understandingthe basic mechanisms could be used, for example, to make desirable cellsget into wounds to promote heali...USGS Scientists Find New Invasive Fish Species In Florida
... with all the attributes necessary to successfully invade and colonize the Everglades and other southeastern...ished in Florida. Although few non-native fishes invade natural wetlands -- instead being primarily found in disturbed habitats such as canals and drainage ...Pharmacologists Discover Linkage Of Key Cell Switches
...nkedswitches to kill cancer cells or bacteria that invade the body, or to exerttherapeutic control over cells. In the May 22 issue of Science, the researchers reported discoveringthat the linkage of an enzyme called a kinase -- which turns on cell processesby chemically adding a phosphate to another......a thin tube formed by the fungus to grow and to invade plant material) has completely penetrated the cell wall and formed intracellular structures, increased motion of cell contents (cytoplasm) towards the penetration site can be detected in plant cells, with the nucleus moving towards this s...University Of Kentucky Researcher Awarded MERIT Extension For Study Of Third World Killer
...ce that we feel is responsible for the parasite to invade the body andsurvive with impunity." Leishmania's cell surface contains a complex molecule made up of sugar,fat and phosphate, called a lipophosphoglycan, that is used for defensivepurposes. The molecule prevents the host animal's white cells....... Researchers speculate that aspredators gradually invade the islands, they feed on eggs and young, causingnest success to decline. Researchers conducted this study of snowy plover breeding habitats on fiveislands created in 1995-1996 at Batiquitos Lagoon, near San Diego, to mitigatewetland loss caused by d...Clues To Molecular Cancer Switches Probed
... could be a factor in the ability oftumor cells to invade other tissues and migrate. The enzymes require metals and are also known as matrix metalloproteinases. Themost ubiquitous of these is matrix metalloproteinase-1 (MMP-1), also calledcollagenase-1. Too much of the emzyme is associated with irreversi...New Worlds Of Order, Argentine Ants Succeed By Outnumbering The Competition
...edators. Theyhave also been known to occasionally invade beehives and interrupt beekeeper'spractices and procedures. Their ability to out-compete native species may alsobe affecting the feeding habits of lizards and small mammals.......ing other receptors that helpviruses, such as HIV, invade cells and could open up new areas of research into...s first has to attach to the receptorbefore it can invade the cell. If we can block that part of the process we couldpotentially prevent entry of the virus." ...Multicomponent Malaria Vaccine Shows Promise in Laboratory Tests
...e are thenreleased into the bloodstream where they invade red blood cells, ultimatelydestroying them. In their recent paper, a research team directed by Altaf A.Lal, Ph.D., of the U.S. Centers for Disease Control and Prevention (CDC),describes a new candidate vaccine that targets the malaria parasite at se...