Stanford gut check shows diversity of intestinal ecosystem
...lo Alto Heath Care System specializes in microbial pathogen discovery and human microbial ecology, and in appreciating the roles played by microbes in human health and disease. The paper by Eckburg and Relman is intended as the first of several studies looking at how microbial communities vary according to ho...Discovery of a 'molecular switch' could lead to new ways of treating infection, including MRSA
...zyme, compared to normal mice, when exposed to the pathogen Streptococcus. In the mice without IKK, they found significantly increased killing of bacteria in sepsis and pneumonia, but found that inflammation was higher than the normal mice. This result led the team to believe that IKK was a stop signal to lim...Mailman School shares new virus identification technologies
...g that as many labs as possible have access to new pathogen identification technologies as they are developed....tforms, which significantly reduce time needed for pathogen identification, at a week-long workshop they are hosting for scientists from around the globe whose ...Scalpel-free surgery could reduce risk of HIV and hepatitis exposure for health care workers
... 17 percent of infections. In addition, bloodborne pathogen infection was found in up to 65 percent of patients with a history of intravenous drug use and in as many as 71 percent of patients undergoing a soft-tissue abscess procedure or lymph-node biopsy. While the patients in this study tend toward low ...Leprosy genome tells story of human migrations, French researchers report in Science
...bacteria has revealed some surprises about how the pathogen evolved and how it was spread across the continent... region, allowing the researchers to trace how the pathogen had spread from its original source....Scientists observe infectious prion proteins invade and move within brain cells
...ell," says Dr. Baron. "I wanted to know how such a pathogen binds to the host cell, and how it enters, replica...ficult from a technical aspect because the scrapie pathogen is largely a corrupted form of a host cell protein," Dr. Baron said. "It can be hard to detect the c...JAMA study finds whooping cough vaccine effective, safe for teens and adults
...oy and "remember" it. When harmful versions of the pathogen later arrived, the immune system would be prepared. Reacting to a Japanese outbreak in the 1980s, pharmaceutical companies there (e.g. Takeda) designed pertussis vaccines that were based not on entire cell bodies, but instead on a few key proteins ...Endocarditis infection commonly related to health care factors, increasingly due to staph
...esearchers found that S aureus was the most common pathogen among the 1779 cases (558 patients, 31.4 percent). Health care-associated infection was the most common form of S aureus IE (218 patients, 39.1 percent), accounting for 25.9 percent (Australia/New Zealand) to 54.2 percent (Brazil) of cases. Most pati...... Experimental Medicine, focused on the major human pathogen Staphylococcus aureus and the characteristic yellow-orange color for which it is named ("aureus" is Latin for "golden"). Among the deadliest of all disease-causing organisms, "Staph" is the leading cause of human infections in the skin and soft tis...Emory researchers offer new approach for testing potential HIV vaccines in animals
... then "challenged" (or infected) with the virus or pathogen against which the vaccine should give protection. In simian models of HIV infection, Simian Immunodeficiency Virus (SIV), closely related to HIV, is used to challenge macaques. The trials are usually conducted with very high challenge doses of the vi...A new understanding of how immune system targets disease
...T cells become armed and capable of destroying the pathogen in question. Sant's study provides the first proof that it is something about the invader epitope itself that drives and focuses T cell response, and not some action of enzymes inside the dendritic cell as once thought. The quality determining immuno...Mayo Clinic boosts immune system
... T cells. Yet in order to effectively respond to a pathogen you haven't seen before, you really need those new T cells produced by the thymus. So that's why as people get older they become more susceptible to particular viruses."...Notch signaling molecule important in type 2 immunity
...e lacking Notch failed to control infection with a pathogen requiring a Th2 response, demonstrating that Notch is a critical regulator of this response," adds co-author David Artis, PhD, Assistant Professor at Penn's School of Veterinary Medicine. "The ability of these same animals to mount strong Th1 respons...Breath test offers hope for early detection of lung-bacteria growth in cystic fibrosis
...eria appears as the most prevalent cystic fibrosis pathogen and is strongly associated with respiratory deterioration and mortality. Over time, the bacteria transforms into treatment-resistant variants, and early detection is seen as key for aggressive antibiotic treatments to delay its growth. In the study, ...Research unveils new, reliable approach to drug delivery for cancer patients
...f the program wants to create a super-binder for a pathogen assay, the technology and the results will be directly applicable." In addition to Noy and Sulchek, Livermore scientists Raymond Friddle, Kevin Langry, Edmond Lau, Timothy Ratto and Michael Colvin (who now works at UC Merced) collaborated with UC D...Bacterium present in eyes with 'wet' age-related macular degeneration
... of C. pneumoniae and also determined whether this pathogen can change the function of eye cells in ways that can cause wet AMD. They found C. pneumoniae in the eyes of five out of the nine patients with wet AMD. They also tested tissue from more than 20 people who did not have AMD and did not find C. pneumon...Sydney researchers explain how stress can make you sick
...stances and control invaders. When we encounter a pathogen (bacteria and viruses), the immune 'sentry' cells that are on guard duty retain and interrogate the suspects. Their activation is made possible by NPY. These cells then return to the lymph nodes, which are found all over the body, with information ...Study sheds new light on causes of common STD
...nital contact may be an important mechanism of NGU pathogen transmission. Additionally, NGU was associated wit...tion, oral sex was associated with NGU in which no pathogen was detected, indicating that there are causes of NGU that have yet to be identified. The study also...Common bacteria pirate natural mechanism to get inside cells
...in. This is not only applicable to this particular pathogen but for many more." Dr. Daaka, who studies receptor signaling, likens receptors to television antennae that control relay of signals from outside the cell to inside by turning on or off. Although there are no known receptors that have the job of trig......um known as Pseudomonas aeruginosa is an important pathogen that is most resistant to therapy when it undergoes a process known as mucoid conversion, forming a biofilm along the airways in cystic fibrosis (CF) patients. In addition, its presence in the lungs of CF patients correlates with markedly reduced lun...