Tag: "pathogen" at biology news

Virginia Tech inventions, creations can improve lives

...fe to handle and manufacture, does not revert to a pathogen or mutate, and does not retain resistance to antibiotics used in the treatment of brucellosis. The patent also provides methods for diagnosis of Brucellae infection, a diagnostic kit for use in detecting the presence of Brucellae in mammalian tissue ...

UW researchers find second anthrax toxin receptor

...ncommon, says Young, citing HIV as an example of a pathogen that employs two major co-receptors to enter cells. The existence of the two anthrax toxin receptors should interest cancer researchers, as both receptors are turned on when new blood vessels are forming - a process called angiogenesis, Scobie says. ...

Genome analysis sheds light on drug-resistant pathogen

...of E. faecalis V583, a strain of the opportunistic pathogen that is resistant to the antibiotic vancomycin. That strain was first isolated at a St. Louis hospital in 1987. The results of this work, supported by the National Institute of Allergy and Infectious Diseases (NIAID), are published in a paper in this...

Alcohol abuse may increase susceptibility to HIV infection

... the blood. When a body becomes infected with a pathogen or virus, explained Bagby, certain cells in the immune system become activated and start dividing or proliferating. "The cell cycle marker Ki67 increases in cells that are proliferating," said Bagby, "so an increase in this protein indicates that th...

Promising new tool shows how dividing cells finish what they start

...g immune cells that are trying to kill an invading pathogen and nerve cells seeking to make the proper connections in the developing brain. Straight and his colleagues discovered more details about when and where the action of myosin is required in cytokinesis, the final stage of cell division. In one of two ...

New strategies against disease revealed as scientists probe genes' tasks

...genes in the tuberculosis bacterium that allow the pathogen to adapt to conditions in its human host. There, holed up inside cells called macrophages, the bacterium can rest in a latent stage for years, before it transforms to its active, disease-causing state. Drugs that targeted these adaptation-related ge...

Symposium explores microbial forensics and the investigation of biocrimes

...tify patterns in a disease outbreak, determine the pathogen involved, control its spread and trace the microorganism to its source--the perpetrator(s). Microbial forensics investigations require and use traditional investigative methodology, established molecular techniques and new, advanced methods that stil...

Forensics bringing bacteria into the courtroom

...ng for the forensic identification of a particular pathogen strain. But the recent anthrax attacks on the U.S. mail system raise a number of questions. If an individual were charged with the attacks, would the court be willing to convict him or her, using as evidence a variation in a genome sequence? Salyers...

Discovery of iron-acquisition pathway suggests new treatments for drug-resistant Staph. infections

...lia burgdorferi, the cause of Lyme disease), every pathogen must scavenge iron from its host in order to survive, grow and cause disease. Body fluids from humans and other mammals contain very little free iron, one of the most important defenses against infections. So bacteria have evolved specialized mecha...

Invading weeds escaped old enemies, brought immunity

...t control," Mitchell says. "The natural process of pathogen infection is helping to prevent invasive plants from becoming worse pests to humanity -- without any subsidy from humans."...

Scientists discover how to grow cells that suppress immune responses

...ess the action of nearby immune cells and help the pathogen survive, says Kemper. We can investigate such questions because we can now grow these cells in the laboratory....

Growing human antibodies in algae

...eign pathogens. After a bacterium, virus, or other pathogen enters the bloodstream, antibodies target antigens--proteins, carbohydrate molecules, and other pieces of the pathogen--specific to that foreign invader. These antibodies then alert the immune system to the presence of the invaders and attract lethal...

Cat parasite killing otters; Michigan's perch pressured; HACCP for medicine

...e taking cues from the sea otters study, measuring pathogen levels in bivalves near outfalls of human and agri...ntify which animal species are the main sources of pathogen pollution. Wildlife, cattle, pets and people can spread Cryptosporidium. Contact: Patricia Conrad, ...

Ulcer-causing pathogen uses hydrogen for energy

...t professor of microbiology at NC State. The human pathogen Helicobacter pylori does not. "No one has ever suspected hydrogen to be an energy source for pathogens," Olson said. "Now we have a whole new target for antibiotics for this particular bacteria." The research is described in a paper published in th...

U.S.-German research consortium sequences genome of versatile soil microbe

...as genus P. aeruginosa, which is an opportunistic pathogen and the leading cause of death for cystic fibrosis patients. TIGR evolutionary biologist Jonathan Eisen said, "Such comparisons among closely related species with different biological properties are invaluable in learning about the biology of each sp...

New UGA study demonstrates bacterial pathogens use hydrogen as energy source in animals

... with the gastric bacterium Helicobacter pylori, a pathogen that colonizes the mucosal surfaces of the human s...ums each year seeking relief. No one knows how the pathogen is spread, and whether it is through food or water or physical contact remains speculative. Nor do s...

The growing Staphylococcus aureus arsenal

Staphylococcus aureus is an opportunistic pathogen with a diverse battery ofvirulence factors, each of which can act alone or in concert in thedevelopment of persistent and sometimes lethal infections such as sepsis,toxic shock syndrome, food poisoning and severe skin diseases. Staphylococcal infecti...

JCI Table of Contents, November 18, 2002

...arsenal Staphylococcus aureus is an opportunistic pathogen with a diverse battery ofvirulence factors, each of which can act alone or in concert in thedevelopment of persistent and sometimes lethal infections such as sepsis,toxic shock syndrome, food poisoning and severe skin diseases.Staphylococcal infectio...

LSUHSC research shows drug blocks enzyme that activates bacterial and viral toxins

...ate. Pseudomonas aeruginosa is an opportunistic pathogen causing urinary tract infections, respiratory system infections, dermatitis, soft tissue infections, bacteremia and a variety of systemic infections, especially in those with immunosuppression related to cancer, HIV and severe burns. P. aeruginosa i...

Ozone produced by antibodies during bacterial killing and in inflammation

...eign pathogens. After a bacterium, virus, or other pathogen enters the bloodstream, antibodies target antigens--proteins, fat molecules, and other pieces of the pathogen--specific to that foreign invader. These antibodies then alert the immune system to the presence of the invaders and attract lethal "effecto...

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