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Researchers take a step toward neuronal replacement therapy

A new study has revealed that immature neurons taken from healthy mouse embryos can repair damaged brain circuitry and partially normalize metabolism when transplanted into adult mice that have grown morbidly obese due to a genetic deficiency.

24 Nov 2011

Scientists decode how Machado-Joseph disease arises

Neurodegenerative diseases represent one of the greatest challenges of our aging society. However, investigation into these diseases is made particularly difficult due to the limited availability of human brain tissue. Scientists from the Life & Brain Research Center and Neurology Clinic of Bonn University have now taken a roundabout path: They reprogrammed skin cells from patients with a hereditary movement disorder into so-called induced pluripotent stem cells (iPS cells) and obtained functional nerve cells from them.

24 Nov 2011

Ribosomes spontaneously change their form during protein production

Ribosomes, the construction sites for proteins, are far more complex than previously assumed. During the production of proteins they constantly and spontaneously change their form. This performance of eukaryotic ribosomes has now been demonstrated for the first time by scientists at Charité - Universitätsmedizin Berlin, the Max-Planck-Institut für Molekulare Genetik in Berlin, and Cornell University in New York, with the aid of special electron microscopic and biophysical methods.

24 Nov 2011

Dantrolene reduces severity of walking and balance problems linked with HD

Huntington's disease (HD) is characterized by ongoing destruction of specific neurons within the brain. It affects a person's ability to walk, talk, and think - leading to involuntary movement and loss of muscle co-ordination. New research published in BioMed Central's open access journal Molecular Neurodegeneration shows that the RyanR inhibitor Dantrolene is able to reduce the severity of walking and balance problems in a mouse model of HD.

24 Nov 2011

B-type lamins are necessary for proper organ development

Scientists have long held theories about the importance of proteins called B-type lamins in the process of embryonic stem cells replicating and differentiating into different varieties of cells. New research from a team led by Carnegie's Yixian Zheng indicates that, counter to expectations, these B-type lamins are not necessary for stem cells to renew and develop, but are necessary for proper organ development.

24 Nov 2011

Carefully selected young, healthy neurons can repair brain circuitry

Neuron transplants have repaired brain circuitry and substantially normalized function in mice with a brain disorder, an advance indicating that key areas of the mammalian brain are more reparable than was widely believed.

24 Nov 2011

ABCC9 gene also influences duration of sleep in humans

A collaborative European study led by LMU researchers has shown that ABCC9, a known genetic factor in heart disease and diabetes, also influences the duration of sleep in humans.

24 Nov 2011

NIH-led study advances HIV vaccine research

HIV is coated in sugars that usually hide the virus from the immune system. Newly published research reveals how one broadly neutralizing HIV antibody actually uses part of the sugary cloak to help bind to the virus. The antibody binding site, called the V1/V2 region, represents a suitable HIV vaccine target, according to the scientists who conducted the study. In addition, their research reveals the detailed structure of the V1/V2 region, the last part of the virus surface to be visualized at the atomic level.

24 Nov 2011

Scientists discover genetic mechanism behind finger malformation

Scientists from the EPFL and the University of Geneva have discovered a genetic mechanism that defines the shape of our members in which, surprisingly, genes play only a secondary role. The research published in Cell, online the 23rd of November, shows the mechanism is found in a DNA sequence that was thought, incorrectly, to play no role.

24 Nov 2011

Study looks at effects of antipsychotic drugs on two brain receptors linked to schizophrenia

Researchers from Mount Sinai School of Medicine, have identified the pattern of cell signaling induced by antipsychotic drugs in a complex composed of two brain receptors linked to schizophrenia.

24 Nov 2011

MC3R gene plays an important role in maintaining steady weight

Against the backdrop of the growing epidemic of obesity in the United States, scientists from the Florida campus of The Scripps Research Institute have made an important new discovery regarding a specific gene that plays an important role in keeping a steady balance between our food intake and energy expenditure. The study may help scientists better understand the keys to fighting obesity and related disorders such as diabetes.

24 Nov 2011

High-tech information innovations sparking sharing of research

A unique scientific competition is seeking centenarians from around the globe who are willing to donate their DNA. The Archon Genomics X Prize will award $10 million to the first team that can sequence human genomes of 100 centenarians accurately and economically in a 30-day competition that begins in January. The goal is to develop a "medical-grade" genome standard that can be used for broad clinical applications to improve patient diagnosis and treatment.

24 Nov 2011

Uncommon genetic deletions associated with short stature

New research sifts through the entire genome of thousands of human subjects to look for genetic variation associated with height. The results of the study, published by Cell Press in the December issue of the American Journal of Human Genetics, suggest that uncommon genetic deletions are associated with short stature.

24 Nov 2011

Knocking out one copy of IGF1 receptor fails to increase life span of male mice

Scientists studying longevity thought it might be good to lack a copy of a gene, called IGF1 receptor, that is important in insulin signaling. Previous studies showed invertebrates that lacked the copy lived longer, even if their bodies were less responsive to insulin, the hormone that lowers blood sugar.

24 Nov 2011

Two-drug combination may alleviate radiation sickness in people

A combination of two drugs may alleviate radiation sickness in people who have been exposed to high levels of radiation, even when the therapy is given a day after the exposure occurred, according to a study led by scientists from Dana-Farber Cancer Institute and Children's Hospital Boston.

24 Nov 2011

Stress chemicals shut down and brain processes emotional experiences during REM sleep

They say time heals all wounds, and new research from the University of California, Berkeley, indicates that time spent in dream sleep can help. UC Berkeley researchers have found that during the dream phase of sleep, also known as REM sleep, our stress chemistry shuts down and the brain processes emotional experiences and takes the painful edge off difficult memories.

24 Nov 2011

Metformin prevents growth of breast cancer cells in human cultures

An inexpensive drug that treats Type-2 diabetes has been shown to prevent a number of natural and man-made chemicals from stimulating the growth of breast cancer cells, according to a newly published study by a Michigan State University researcher.

24 Nov 2011

Cell-penetrating or antimicrobial peptides could treat atopic eczema

Scientists have found that a strain of yeast implicated in inflammatory skin conditions, including eczema, can be killed by certain peptides and could potentially provide a new treatment for these debilitating skin conditions.

24 Nov 2011

NIH grant to support Cedars-Sinai's Department of Neurology research

The National Institutes of Health has awarded a four-year, $1.4 million grant to Cedars-Sinai's Department of Neurology to study an unexpected recent discovery: After ischemic stroke - the type caused by a clogged artery but with no bleeding into the brain - a normal protein that plays a positive role in blood clotting escapes intact arteries and damages healthy brain cells.

24 Nov 2011

Scientists identify MEGF10 defective gene responsible for muscle weakness

An international team of researchers from England and the Charité - Universitätsmedizin Berlin has presented new findings regarding the function of muscle stem cells, which are published in the current issue of the journal Nature Genetics.

23 Nov 2011