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Study shows superantigens produced by staph bacteria cause infective endocarditis and sepsis

University of Iowa researchers have discovered what causes the lethal effects of staphylococcal infective endocarditis - a serious bacterial infection of heart valves that kills approximately 20,000 Americans each year.

20 Aug 2013

Physical-activity adviser motivates old Latino adults to participate in exercise program

When it comes to getting motivated to exercise and do things that are good for our health, sometimes all it takes is a little help from our friends.

20 Aug 2013

Researchers study connections between brain network damage and Alzheimer's disease

In patients with early Alzheimer's disease, disruptions in brain networks emerge about the same time as chemical markers of the disease appear in the spinal fluid, researchers at Washington University School of Medicine in St. Louis have shown.

20 Aug 2013

Study shows complement activation plays an important role in inherited macular degeneration

In a study published on line this week in the journal Human Molecular Genetics, Drs. Donita Garland, Rosario Fernandez-Godino, and Eric Pierce of the Ocular Genomics Institute at the Massachusetts Eye and Ear, Harvard Medical School, along with their colleagues, reported the unexpected finding that in mice genetically engineered to have an inherited form of macular degeneration, turning off the animals' complement system, a part of the immune system, prevented the disease.

20 Aug 2013

Researchers create mouse models to advance the study of unusual deadly diseases

By directly manipulating a portion of the prion protein-coding gene, Whitehead Institute researchers have created mouse models of two neurodegenerative diseases that are fatal in humans. The highly accurate reproduction of disease pathology seen with these models should advance the study of these unusual but deadly diseases.

20 Aug 2013

Scientists study how oxidative stress in cells impacts sarcopenia in all humans as they age

Although muscle cells did not reduce in size or number in mice lacking a protective antioxidant protein, they were weaker than normal muscle cells, researchers from the Barshop Institute for Longevity and Aging Studies at The University of Texas Health Science Center San Antonio found.

20 Aug 2013

Caltech biologists identify mechanism by which beneficial bacteria reside, thrive in gastrointestinal tract

The human body is full of tiny microorganisms-hundreds to thousands of species of bacteria collectively called the microbiome, which are believed to contribute to a healthy existence. The gastrointestinal (GI) tract-and the colon in particular-is home to the largest concentration and highest diversity of bacterial species.

20 Aug 2013

New research sheds light on two distinct brain processes that underlie prospective memory

You plan on shopping for groceries later and you tell yourself that you have to remember to take the grocery bags with you when you leave the house. Lo and behold, you reach the check-out counter and you realize you've forgotten the bags.

20 Aug 2013

Copper enhances progression of Alzheimer's disease

Copper appears to be one of the main environmental factors that trigger the onset and enhance the progression of Alzheimer's disease by preventing the clearance and accelerating the accumulation of toxic proteins in the brain. That is the conclusion of a study appearing today in the journal Proceedings of the National Academy of Sciences.

20 Aug 2013

IBN researchers one step closer to viable tissue replacements

Researchers at the Institute of Bioengineering and Nanotechnology have developed a simple method of organizing cells and their microenvironments in hydrogel fibers. Their unique technology provides a feasible template for assembling complex structures, such as liver and fat tissues, as described in their recent publication in Nature Communications.

19 Aug 2013

Powerful mechanism helps viruses evade body's immune response

Researchers at the Salk Institute for Biological Studies have discovered a powerful mechanism by which viruses such as influenza, West Nile and Dengue evade the body's immune response and infect humans with these potentially deadly diseases. The findings may provide scientists with an attractive target for novel antiviral therapies.

19 Aug 2013

Scientists reveal how females select 'right' sperm to fertilize their eggs

University of East Anglia scientists have revealed how females select the 'right' sperm to fertilize their eggs when faced with the risk of being fertilized by wrong sperm from a different species.

19 Aug 2013

Study: Gene that controls ageing process linked to cancer

A gene that helps control the ageing process by acting as a cell's internal clock has been linked to cancer by a major new study.

19 Aug 2013

Boehringer signs agreement with Brigham to conduct long-term study program on oral anticoagulants

Boehringer Ingelheim, a research-based, global pharmaceutical company, today announced a multi-year agreement with Brigham and Women's Hospital, an internationally recognized teaching affiliate of Harvard Medical School known for its excellence in patient care, medical research and training of outstanding young health professionals.

17 Aug 2013

Interactions between sympathetic neurons and pancreatic cells have implications for organ development

The human body is a complicated system of blood vessels, nerves, organs, tissue and cells each with a specific job to do. When all are working together, it's a symphony of form and function as each instrument plays its intended roles.

17 Aug 2013

Calcium and vitamin D supplements have no effect on joint symptoms in postmenopausal women

A team of investigators systematically analyzed the effect of calcium and vitamin D supplementation on joint symptoms in a rigorous and controlled study of postmenopausal women. They found that supplementation did not reduce the severity of joint symptoms reported by the participants.

17 Aug 2013

Computing system in helmets protect construction workers from CO poisoning

Research calling for the use of a wearable computing system installed in a helmet to protect construction workers from carbon monoxide poisoning, a serious lethal threat in this industry, has garnered the Virginia Tech investigators a Best Paper Award from a prestigious scientific and engineering community.

17 Aug 2013

Scientists identify new therapeutic targets to inhibit progression of Alzheimer's disease

To stop the progression of Alzheimer's disease in the early stage, it is necessary to identify new therapeutic targets. Prof. Yunpeng Cao and team from the First Affiliated Hospital of China Medical University examined striatal-enriched phosphatase 61 expression in the brain tissues of Alzheimer's disease rats using in vivo and in vitro models, and analyzed the molecular mechanism by which striatal-enriched phosphatase 61 regulates N-methyl-D- aspartate receptor 2B transport.

17 Aug 2013

Researchers study demographic, socioeconomic factors that buffer effects of video game violence

In November 2010, an online gaming company called ActiVision released Call of Duty: Black Ops, a violent, first-person shooter game compatible with a variety of gaming devices. The video game sold 5.6 million copies within 24 hours of its release, and it earned a record-breaking $650 million in its first five days. Six weeks later, the game had exceeded $1 billion in sales.

17 Aug 2013

Increased caffeine intake may reduce fatty liver in people with NAFLD

Surprise! Your morning cup of tea or coffee may be doing more than just perking you up before work. An international team of researchers led by Duke-NUS Graduate Medical School (Duke-NUS) and the Duke University School of Medicine suggest that increased caffeine intake may reduce fatty liver in people with non-alcoholic fatty liver disease (NAFLD).

17 Aug 2013

Medical Science News

Study shows superantigens produced by staph bacteria cause infective endocarditis and sepsis

Physical-activity adviser motivates old Latino adults to participate in exercise program

Researchers study connections between brain network damage and Alzheimer's disease

Study shows complement activation plays an important role in inherited macular degeneration

Researchers create mouse models to advance the study of unusual deadly diseases

Scientists study how oxidative stress in cells impacts sarcopenia in all humans as they age

Caltech biologists identify mechanism by which beneficial bacteria reside, thrive in gastrointestinal tract

New research sheds light on two distinct brain processes that underlie prospective memory

Copper enhances progression of Alzheimer's disease

IBN researchers one step closer to viable tissue replacements

Powerful mechanism helps viruses evade body's immune response

Scientists reveal how females select 'right' sperm to fertilize their eggs

Study: Gene that controls ageing process linked to cancer

Boehringer signs agreement with Brigham to conduct long-term study program on oral anticoagulants

Interactions between sympathetic neurons and pancreatic cells have implications for organ development

Calcium and vitamin D supplements have no effect on joint symptoms in postmenopausal women

Computing system in helmets protect construction workers from CO poisoning

Scientists identify new therapeutic targets to inhibit progression of Alzheimer's disease

Researchers study demographic, socioeconomic factors that buffer effects of video game violence

Increased caffeine intake may reduce fatty liver in people with NAFLD

Real-time Raman monitoring for pharmaceutical hot melt extrusion

Synthetic Psychedelics: A Growing Public Health Concern

How the Vutara VXL simplifies single-molecule imaging

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