Body

Scientists find resistance mechanism that could impact antibiotic drug development

JUPITER, FL, February 20, 2014 – The use of antibiotics is often considered among the most important advances in the treatment of human disease. Unfortunately, though, bacteria are finding ways to make a comeback. According to the Centers for Disease Control, more than two million people come down with antibiotic-resistant infections annually, and at least 23,000 die because their treatment can't stop the infection. In addition, the pipeline for new antibiotics has grown dangerously thin.

Chemical chaperones have helped proteins do their jobs for billions of years

ANN ARBOR—An ancient chemical, present for billions of years, appears to have helped proteins function properly since time immemorial.

Proteins are the body's workhorses, and like horses they often work in teams. There exists a modern day team of multiple chaperone proteins that help other proteins fold into the complex 3D shapes they must achieve to function. This is necessary to avert many serious diseases caused when proteins misbehave.

Scientists discover 11 new genes affecting blood pressure

New research from Queen Mary University of London has discovered 11 new DNA sequence variants in genes influencing high blood pressure and heart disease.

Identifying the new genes contributes to our growing understanding of the biology of blood pressure and, researchers believe, will eventually influence the development of new treatments. More immediately the study highlights opportunities to investigate the use of existing drugs for cardiovascular diseases.

A changing view of bone marrow cells

In the battle against infection, immune cells are the body's offense and defense—some cells go on the attack while others block invading pathogens. It has long been known that a population of blood stem cells that resides in the bone marrow generates all of these immune cells. But most scientists have believed that blood stem cells participate in battles against infection in a delayed way, replenishing immune cells on the front line only after they become depleted.

Compound improves cardiac function in mice with genetic heart defect, MU study finds

COLUMBIA, Mo. — Congenital heart disease is the most common form of birth defect, affecting one out of every 125 babies, according to the National Institutes of Health. Researchers from the University of Missouri recently found success using a drug to treat laboratory mice with one form of congenital heart disease, hypertrophic cardiomyopathy — a weakening of the heart caused by abnormally thick muscle. By suppressing a faulty protein, the researchers reduced the thickness of the mice's heart muscles and improved their cardiac functioning.

MD Anderson researcher uncovers some of the ancient mysteries of leprosy

Research at The University of Texas MD Anderson Cancer Center is finally unearthing some of the ancient mysteries behind leprosy, also known as Hansen's disease, which has plagued mankind throughout history. The new research findings appear in the current edition of journal PLOS Neglected Tropical Diseases. According to this new hypothesis, the disease might be the oldest human-specific infection, with roots that likely stem back millions of years.

Better broccoli, enhanced anti-cancer benefits with longer shelf life

URBANA, Ill. – While researching methods to increase the already well-recognized anti-cancer properties of broccoli, researchers at the University of Illinois also found a way to prolong the vegetable's shelf life.

And, according to the recently published study, the method is a natural and inexpensive way to produce broccoli that has even more health benefits and won't spoil so quickly on your refrigerator shelf.

Color vision problems become more common with age, reports Optometry and Vision Science

Philadelphia, Pa. (February 20, 2014) - Abnormal color vision increases significantly with aging—affecting one-half or more of people in the oldest age groups, reports a study in Optometry and Vision Science, official journal of the American Academy of Optometry.

Roots to shoots: Hormone transport in plants deciphered

Plant growth is orchestrated by a spectrum of signals from hormones within a plant. A major group of plant hormones called cytokinins originate in the roots of plants, and their journey to growth areas on the stem and in leaves stimulates plant development. Though these phytohormones have been identified in the past, the molecular mechanism responsible for their transportation within plants was previously poorly understood.

Crop species may be more vulnerable to climate change than we thought

A new study by a Wits University scientist has overturned a long-standing hypothesis about plant speciation (the formation of new and distinct species in the course of evolution), suggesting that agricultural crops could be more vulnerable to climate change than was previously thought.

Surprising culprit found in cell recycling defect

To remain healthy, the body's cells must properly manage their waste recycling centers. Problems with these compartments, known as lysosomes, lead to a number of debilitating and sometimes lethal conditions.

Meet your match: Using algorithms to spark collaboration between scientists

Speed dating, in which potential lovers size each other up in brief 10 minute encounters before moving on to the next person, can be an awkward and time-wasting affair. Finding the perfect research partnership is often just as tough. Speed dating-style techniques are increasingly used at academics conferences, but can be equally frustrating - with busy academics being pushed into too many pointless encounters.

Why are some children more resilient to post-traumatic stress?

New Rochelle, NY, February 20, 2014—Children exhibit a range of responses to traumatic events such as natural disasters, with some suffering acute traumatic reactions that resolve over time and others experiencing long-term symptoms of post-traumatic stress.

Recurrent mouth and throat cancers less deadly when caused by virus, study shows

People with late-stage cancer at the back of the mouth or throat that recurs after chemotherapy and radiation treatment are twice as likely to be alive two years later if their cancer is caused by the human papillomavirus (HPV), new research led by a Johns Hopkins scientist suggests.

Previous studies have found that people with so-called HPV-positive oropharyngeal cancers are more likely to survive than those whose cancers are related to smoking or whose origins are unknown.

Feasible, safe to limit radiation to major salivary glands in head and neck cancer patients

Scottsdale, Ariz., February 20, 2014—Avoiding the contralateral submandibular gland during radiation therapy is feasible and safe with advanced stage, node positive head and neck cancers and base of tongue lesions, according to research presented today at the 2014 Multidisciplinary Head and Neck Cancer Symposium.