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Researchers report how sildenafil can alleviate heart problems

How sildenafil, the active ingredient in Viagra, can alleviate heart problems is reported by Bochum's researchers in cooperation with colleagues from the Mayo Clinic in Rochester (Minnesota) in the journal Circulation.

26 Dec 2011

Genetic analysis revises treatment recommendations related to thyroid cancer

Cleveland Clinic researchers have discovered three genes that increase the risk of thyroid cancer, which is has the largest incidence increase in cancers among both men and women.

23 Dec 2011

Tyrosine kinases play greater role in mitochondria than previously recognized

Cancer cells tend to take up more glucose than healthy cells, and researchers are increasingly interested in exploiting this tendency with drugs that target cancer cells' altered metabolism.

From Cell Signaling Technology 23 Dec 2011

Scientific journal retracts study that linked mouse virus to human chronic fatigue syndrome

Editors at the journal Science have retracted a study that linked a virus in mice to chronic fatigue syndrome in humans after the Cleveland Clinic said some data came from a contaminated lab.

23 Dec 2011

Potential new strategy against bacteria with multi-drug resistant organisms

Vaccines with broader reach might be made by stimulating specialized immune cells to recognize foreign cell membrane proteins that are shared across bacterial species, say researchers from Children's Hospital of Pittsburgh of UPMC and the University of Pittsburgh School of Medicine in a report published online today in Immunity.

23 Dec 2011

Researchers discover key interaction at heart of promising new treatment for Fabry disease

A research team led by biochemist Scott Garman at the University of Massachusetts Amherst has discovered a key interaction at the heart of a promising new treatment for a rare childhood metabolic disorder known as Fabry disease.

23 Dec 2011

Reverse spectroscopy eliminates background noise and cleans up images

Optical techniques enable us to examine single molecules, but do we really understand what we are seeing? After all, the fuzziness caused by effects such as light interference makes these images very difficult to interpret.

23 Dec 2011

Radiology researchers discover that MS affects thalamus of the brain

Radiology researchers at The University of Texas Health Science Center at Houston (UTHealth) have found evidence that multiple sclerosis affects an area of the brain that controls cognitive, sensory and motor functioning apart from the disabling damage caused by the disease's visible lesions.

23 Dec 2011

UTA chemist to develop simple, paper-based test for drug-resistant TB

Developing a simple, paper-based test for drug-resistant tuberculosis (TB) is the goal of a University of Texas at Austin chemist, whose project just received a $1.6 million point-of-care diagnostics grant through Grand Challenges in Global Health, an initiative created by the Bill & Melinda Gates Foundation.

23 Dec 2011

Anti-cancer drugs may also fight antibiotic resistance

Drugs used to overcome cancer may also combat antibiotic resistance, finds a new study led by Gerry Wright, scientific director of the Michael G. DeGroote Institute for Infectious Disease Research at McMaster University.

23 Dec 2011

LincRNAs play key roles during embryonic brain development

Whitehead Institute scientists have identified conserved, long intervening non-coding RNAs (lincRNAs) that play key roles during embryonic brain development in zebrafish. They also show that the human versions of the lincRNAs can substitute for the zebrafish versions, which implies that the functions of these non-coding RNAs have been retained in humans as well as fish.

23 Dec 2011

UCF scientists pioneer new source of stem cell generation

A process that prompts a single gene to generate millions of supercharged stem cells, which can then turn into any kind of cell a body needs to repair itself, has been patented at the University of Central Florida.

23 Dec 2011

Researchers reveal what cells respond to anesthesia in C. elegans

Physicians use inhalation anesthetics in a way that is incredibly safe for patients, but very little is known about the intricacies of how these drugs actually work in children and adults. Now, researchers have uncovered what cells respond to anesthesia in an organism known as the C. elegans, according to a new study from the Seattle Children's Research Institute. C. elegans is a transparent roundworm used often in research.

23 Dec 2011

Researchers successfully treat severe congenital disorder in mouse model

Using a mouse model, Heidelberg University Hospital researchers have for the first time successfully treated a severe congenital disorder in which sugar metabolism is disturbed.

23 Dec 2011

Scientists discover how DNA mismatch repair proteins work

In eukaryotes - the group of organisms that include humans - a key to survival is the ability of certain proteins to quickly and accurately repair genetic errors that occur when DNA is replicated to make new cells.

23 Dec 2011

Researchers evaluate role of Mediterranean diet ingredients in prevention of cell damage

The researchers evaluated the role of Mediterranean diet ingredients in the prevention and mitigation of cell damage.

23 Dec 2011

Faulty lipid metabolism may cause MS, says forensic anthropologist

An article to be published in the December 2011 issue of The Quarterly Review of Biology argues that multiple sclerosis, long viewed as primarily an autoimmune disease, is not actually a disease of the immune system.

23 Dec 2011

Fluoride has dramatic effects on bacteria inside the mouth

Regular use of fluoride-containing toothpaste and mouthwash has long been known to strengthen the enamel on teeth. But new research by Howard Hughes Medical Institute (HHMI) scientists finds that fluoride also has dramatic effects on bacteria inside the mouth -- including those that form plaque and can cause cavities.

23 Dec 2011

Scientists discover mechanism by which TNFα stimulates tumor formation

An inflammation-promoting protein triggers deactivation of a tumor-suppressor that usually blocks cancer formation via the NOTCH signaling pathway, a team of researchers led by scientists at The University of Texas MD Anderson Cancer Center reports today in Molecular Cell.

23 Dec 2011

Changes in social structure, cultural practices can contribute to human evolution

Changes in social structure and cultural practices can also contribute to human evolution, according to a study that has recently been published in the journal Proceedings of the National Academy of Sciences (PNAS), contributed to by the lecturer Mireia Esparza and assistant Neus Martínez-Abadías, from the Anthropology Unit of the UB's Department of Animal Biology.

23 Dec 2011