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Researchers identify mechanism by which cannabis affects working memory

A deterioration of working memory is observed in people who consume drugs containing cannabinoid compounds found in cannabis leaves and buds. A team led by Giovanni Marsicano in collaboration with a team led by Xia Zhang, has recently identified the mechanism by which these substances affect working memory.

3 Mar 2012

New breakthrough in early mammalian embryo development

Pioneering work by a leading University of Nottingham scientist has helped reveal for the first time a vital process in the development of the early mammalian embryo.

3 Mar 2012

WUSTL scientists to decode DNA of 99 patients with rare diseases

Rare genetic diseases, long overlooked because they affect relatively few people, are getting new attention. Scientists at Washington University School of Medicine in St. Louis are reaching out to patient advocacy groups and offering to decode the DNA of 99 patients with rare diseases to help find the genetic alterations responsible for their illnesses.

3 Mar 2012

Union County Commission honors KF scientist with Women of Excellence Award

Helen Genova, PhD, research scientist at Kessler Foundation, received a Women of Excellence Award in Health Sciences from the Union County Commission on the Status of Women. In the Foundation's Neuropsychology and Neuroscience Laboratory, she investigates the effects of multiple sclerosis (MS) and traumatic brain injury on cognitive function with grant funding.

3 Mar 2012

Negative effects of environmental toxicants can pass across generations

A Washington State University researcher has demonstrated that a variety of environmental toxicants can have negative effects on not just an exposed animal but the next three generations of its offspring.

3 Mar 2012

Polymer-based medical implants can produce harmful free radicals

A polymer is a mesh of chains, which slowly break over time due to the pressure from ordinary wear and tear. When a polymer is squeezed, the pressure breaks chemical bonds and produces free radicals: ions with unpaired electrons, full of untapped energy. These molecules are responsible for aging, DNA damage and cancer in the human body.

3 Mar 2012

REST molecule acts as an adapter in stem cells, times neuronal development

Upon fertilisation, a single cell is formed when egg and sperm fuse. Our entire body, with more than 200 specialised cell types and billions of cells are formed from this single cell. It is a scientific mystery how the early stem cells know what cell type to become, but a precise timing of the process is crucial for correct development and function of our body.

3 Mar 2012

Scientists to develop new carbon-based biointerfaces

In the future, neural implants could replace destroyed sensory cells in the eye or ear - a dream come true for humanity. One of the greatest challenges yet to be addressed is designing the interface between medical technology and human tissue. In order to overcome the limitations of existing models, scientists from Forschungszentrum Juelich and eleven other institutions involved in the NeuroCare project, which kicked off on 1 March 2012, will develop novel biointerfaces made of carbon.

3 Mar 2012

Critical new details about structure of enterovirus 71

Researchers have discovered critical new details about the structure of a virus that causes potentially fatal brain swelling and paralysis in children, pointing toward designs for antiviral drugs to treat the disease.

3 Mar 2012

CLR01 blocks toxic aggregations of proteins in mouse model of Parkinson's

Millions of people suffer from Parkinson's disease, a disorder of the nervous system that affects movement and worsens over time. As the world's population ages, it's estimated that the number of people with the disease will rise sharply. Yet despite several effective therapies that treat Parkinson's symptoms, nothing slows its progression.

2 Mar 2012

New way to culture stem cells in 3D environment

Stem cells are the body's mechanics, repairing damaged tissues and organs. Because these cells are able to grow into any type of cell in the body, scientists believe they hold the key to groundbreaking new therapies. To help further this research, scientists from the University of Victoria have found a new way to culture cells in 3D- a significant step forward for regenerative medicine.

2 Mar 2012

Bacteria may be talking to each other with a contact-dependent language

What if bacteria could talk to each other? What if they had a sense of touch? A new study by researchers at UC Santa Barbara suggests both, and theorizes that such cells may, in fact, need to communicate in order to perform certain functions. The findings appear today in the journal Genes & Development.

2 Mar 2012

External cues affect cell's ability to migrate

In a paper published today in the journal, Cell, a team from the University of North Carolina at Chapel Hill has explained for the first time how a long-studied protein complex affects cell migration and how external cues affect cell's ability to migrate.

2 Mar 2012

Combination of implanted DCs and EBRT effective in creating sarcoma tumor immune response

A team of 18 researchers at Moffitt Cancer Center in Tampa, Fla., have found that treating high-risk, soft tissue sarcoma patients with a combination of implanted dendritic cells (immune system cells) and fractionated external beam radiation (EBRT) provided more than 50 percent of their trial patients with tumor-specific immune responses lasting from 11 to 42 weeks.

2 Mar 2012

Desflurane may be safer anesthetic option for patients with AD

In a study that will appear in Annals of Neurology and has received early online release, Massachusetts General Hospital (MGH) researchers report that administration of isoflurane impaired the performance of mice on a standard test of learning and memory - a result not seen when another anesthetic, desflurane, was administered.

2 Mar 2012

Scientists determine chemical features of DHPS enzyme's active site

More than 70 years after the first sulfa drugs helped to revolutionize medical care and save millions of lives, St. Jude Children's Research Hospital scientists have determined at an atomic level the mechanism these medications use to kill bacteria. The discovery provides the basis for a new generation of antibiotics that would likely be harder for bacteria to resist and cause fewer side effects.

2 Mar 2012

Combining two common cancer-fighting strategies may have 'tremendous synergy'

Researchers at the University of Illinois at Chicago College of Medicine have found that a molecule found at elevated levels in cancer cells seems to protect them from the "cell-suicide" that is usually triggered by chemotherapy or radiation.

2 Mar 2012

Poor sleep alters immune system response to stress in older adults

Older adults who sleep poorly have an altered immune system response to stress that may increase risk for mental and physical health problems, according to a study led by a University of Rochester Medical Center researcher.

2 Mar 2012

Researchers confirm how food poisoning bacteria hijack cell's sense of direction

Working in the emerging field of systems biology, UT Southwestern Medical Center researchers mathematically predicted how bacteria that cause food poisoning hijack a cell's sense of direction and then confirmed those predictions in living cells.

2 Mar 2012

F-DOPA PET/CT imaging alters management plans for patients with brain cancer

Imaging amino acid transporters with positron emission tomography/computed tomography (PET/CT) has been shown to significantly alter intended management plans for patients with brain tumors, according to research in the March issue of The Journal of Nuclear Medicine.

2 Mar 2012