Body

A team led by Thomas B. Nutman, M.D., of the National Institute of Allergy and Infectious Diseases (NIAID), part of the National Institutes of Health, has completed a large-scale analysis of most of the proteins produced by Brugia malayi, one kind of parasitic worm that causes lymphatic filariasis, or elephantiasis. The greatly swollen lower limbs that can result from chronic infection with this mosquito-borne parasite can be severely disabling.

Using bacteria to generate energy is a signifiant step closer following a breakthrough discovery by scientists at the University of East Anglia (UEA).

Published today by the leading scientific journal Proceedings of the National Academy of Sciences (PNAS), the research demonstrates for the first time the exact molecular structure of the proteins which enable bacterial cells to transfer electrical charge.

Their device can be contained on a single chip and is simple and inexpensive to manufacture. "The idea would be that doctors could take a tiny drop of blood from patients and be able to run diagnostic tests on it right there in their office, instead of sending it away to a lab where testing can take days and is expensive," said Weihua Guan, a Yale engineering graduate student who led the project.

Researchers from Virginia Tech and Oxford University have proposed a novel molecular mechanism for the living cell's remarkable ability to detect the alignment of replicated chromosomes on the mitotic spindle in the final phase of the cell division cycle. This checkpoint mechanism prevents mistakes in the cell division process that could damage dividing cells and the organism they inhabit.

In a study to be published online this week in the Proceedings of the National Academy of Sciences, researchers report the discovery of a novel hepatitis C-like virus in dogs. The identification and characterization of this virus gives scientists new insights into how hepatitis C in humans may have evolved and provides scientists renewed hope to develop a model system to study how it causes disease.

Researchers at the Peter Munk Cardiac Centre discovered a protein switch which can trigger a cascade of events leading to heart failure, pointing to a new direction for drug development.

“Our research suggests that PINK1 is an important switch that sets off acascade of events affecting heart cell metabolism,” says Dr. Phyllis Billia,principal author, clinician‑scientist and heart failure specialist at thePeter Munk Cardiac Centre. “This could be one of the inciting events in thedevelopment of heart failure.”

(Santa Barbara, Calif.) –– Laboratory studies by chemical engineers at UC Santa Barbara may lead to new experimental methods for early detection and diagnosis –– and to possible treatments –– for pathological tissues that are precursors to multiple sclerosis and similar diseases.

HOUSTON — An antibody packaged with a potent chemotherapy drug to selectively destroy acute lymphoblastic leukemia (ALL) cells eradicated or greatly reduced the disease for 61 percent of 46 patients in a phase II study. It will be presented at the 47th annual meeting of the American Society of Clinical Oncology in Chicago June 3-7.

Patients enrolled in the trial led by investigators at The University of Texas MD Anderson Cancer Center had ALL that resisted other therapies or recurred after treatment.

The popular, formerly caffeinated, fruity alcoholic beverage, Four Loko, has been blamed for the spike in alcohol-related hospitalizations, especially throughout college campuses.

Initially, caffeine was deemed the culprit and the Food and Drug Administration ordered all traces of caffeine to be removed from Four Loko and all other similar beverages. However, according to an upcoming evaluation in Perspectives on Psychological Science, a journal of the Association for Psychological Science, caffeine might not be the primary cause of the spike in hospitalizations.

NEW ORLEANS, LA – May 23, 2011 -- People with severe asthma are more likely to have antibodies against the disease-causing bacteria Chlamydia pneumoniae than the general population and in some cases antibiotic treatment can greatly improve symptoms according to research presented today at the 111th General Meeting of the American Society for Microbiology.

Many people tout the beneficial effects of probiotics in preventing and/or treating several intestinal diseases, including ulcerative colitis. Although there have been few, if any, good clinical studies evaluating the clinical efficacy of probiotics, preclinical data suggest that probiotics and approaches utilizing probiotic-derived products could be effective therapies for acute and chronic gastrointestinal disorders.

TEMPE, Ariz. – The International Institute for Species Exploration at Arizona State University and a committee of taxonomists from around the world – scientists responsible for species exploration and classification – announced their picks for the top 10 new species described in 2010. The May 23 announcement coincided with the anniversary of the birth of Carolus Linnaeus, the Swedish botanist who was responsible for the modern system of plant and animal names and classifications.

A protein isolated from beneficial bacteria found in yogurt and dairy products could offer a new, oral therapeutic option for inflammatory bowel disorders (IBD), suggests a study led by Vanderbilt University Medical Center researcher Fang Yan, M.D., Ph.D.

OAK BROOK, Ill. – May 23, 2011 – Researchers from China report that in patients with peptic ulcer bleeding in whom endoscopy failed to control the bleeding, transarterial embolization is a safe procedure which reduces the need for surgery without increasing overall mortality and is associated with few complications. The study appears in the May issue of GIE: Gastrointestinal Endoscopy, the monthly peer-reviewed scientific journal of the American Society for Gastrointestinal Endoscopy (ASGE).

A shave biopsy is a reasonably safe and accurate method for the initial diagnosis of melanoma, according to a study published in the April issue of the Journal of the American College of Surgeons. In the past, some physicians have criticized shave biopsies for not providing accurate T (tumor) stage information, thereby complicating treatment planning.