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Critical considerations for adenovirus-based HIV vaccine trials

A clinical trial testing a candidate HIV vaccine known as the STEP study was halted in September 2007 after interim analysis indicated that the vaccine did not work. Moreover, subsequent analyses indicated that the vaccine made some individuals more susceptible to HIV, in particular individuals who had pre-existing immune effectors (antibodies) that recognized a component of the vaccine (adenovirus serotype 5 [Ad5]).

28 Dec 2011

Obesity associated with hypothalamic injury

The number of people who suffer from one or more of the adverse complications of obesity, including type 2 diabetes and heart disease is rapidly increasing. Thus far, drugs designed to treat obesity have shown limited efficacy and have been associated with serious side effects.

28 Dec 2011

DNA stays too tightly wound in brain cells of patients with schizophrenia

Scientists at The Scripps Research Institute have discovered that DNA stays too tightly wound in certain brain cells of schizophrenic subjects. The findings suggest that drugs already in development for other diseases might eventually offer hope as a treatment for schizophrenia and related conditions in the elderly.

28 Dec 2011

IL-1 gene inactivation may reduce severe clinical complications of atherosclerosis

Atherosclerosis is a disease of the major arterial blood vessels. It is one of the major causes of heart attack and stroke. The proinflammatory molecule IL-1 has been linked to atherosclerosis and a clinical trial has been launched in which an antibody specific for IL-1-beta is being studied for its effects on the severe clinical complications of atherosclerosis.

28 Dec 2011

Researchers decode and characterize DNA repair mechanism

Oxidative stress is the cause of many serious diseases such as cancer, Alzheimer's, arteriosclerosis and diabetes. It occurs when the body is exposed to excessive amounts of electrically charged, aggressive oxygen compounds. These are normally produced during breathing and other metabolic processes, but also in the case of ongoing stress, exposure to UV light or X-rays. If the oxidative stress is too high, it overwhelms the body's natural defences. The aggressive oxygen compounds destroy genetic material, resulting in what are referred to as harmful 8-oxo-guanine base mutations in the DNA.

28 Dec 2011

Current scientific understanding of left and right-handedness

Left-handedness is sometimes the expression of a genetic defect or an early developmental disturbance. In this issue of Deutsches Ärzteblatt International, Stefan Gutwinski and coauthors present the current scientific understanding of left- and right-handedness.

28 Dec 2011

New approach may prevent septic shock

Researchers of VIB and UGent have discovered a new approach to preventing septic shock, an often fatal extreme inflammatory reaction of the body. It is the most frequent cause of death at intensive care departments in hospitals.

28 Dec 2011

Tbx3 dysfunction may cause acquired and spontaneous arrhythmias

In a study published in the Dec. 26, 2011, Proceedings of the National Academy of Sciences early edition, researchers led by the University of Utah showed the CCS is extremely sensitive to levels of Tbx3. Mouse embryos with Tbx3 levels below a critical threshold suffered arrhythmia and couldn't survive. As the levels of Tbx3 were increased, mice survived to birth, but as adults they developed arrhythmias or had sudden death.

27 Dec 2011

FDA clears Meridian Bioscience's new Clostridium difficile assay

Meridian Bioscience, Inc., Cincinnati, Ohio today announced it has received FDA clearance for a new Clostridium difficile assay, ImmunoCard C. difficile GDH.

27 Dec 2011

Synthetic drugs treat Crohn's disease in mice

A team of Weizmann Institute scientists has turned the tables on an autoimmune disease. In such diseases, including Crohn's and rheumatoid arthritis, the immune system mistakenly attacks the body's tissues. But the scientists managed to trick the immune systems of mice into targeting one of the body's players in autoimmune processes, an enzyme known as MMP9.

26 Dec 2011

Researchers discover that neutrophils exist in the spleen

For the first time, it has been discovered that neutrophils exist in the spleen without there being an infection.

26 Dec 2011

Pfizer, Karo Bio partner to develop RORgamma modulators for autoimmune diseases

Karo Bio AB has entered into a research collaboration agreement with Pfizer Inc., to discover and develop novel small molecule RORgamma modulators for the treatment of autoimmune diseases.

26 Dec 2011

Cleveland Clinic scientists named AAAS Fellows

Cleveland Clinic researchers Bruce Lamb, Ph.D., and Xiaoxia Li, Ph.D., were recently named Fellows of the American Association for the Advancement of Science.

26 Dec 2011

AAA announces recipients of Young Investigator Awards

The American Association of Anatomist's (AAA) Young Investigator Awards combine three long-standing AAA awards-Bensley, Herrick, and Mossman-with the recently established Morphological Sciences Award, all recognizing investigators in the early stages of their careers who have made important contributions to biomedical science through their research in cell/molecular biology, developmental biology, comparative neuroanatomy, or the morphological sciences.

26 Dec 2011

Science journal selects Mayo Clinic discovery among top 10 achievements of 2011

The editors of the journal Science have selected a Mayo Clinic discovery as one of their top 10 "groundbreaking scientific achievements of 2011." The Mayo study --the first to eliminate the effects of aging in mice -- received worldwide attention when it was published in Nature in November.

26 Dec 2011

Glycol chitosan-coated MRI agent safer, more effective in detecting breast cancer

Many imaging technologies and their contrast agents - chemicals used during scans to help detect tumors and other problems - involve exposure to radiation or heavy metals, which present potential health risks to patients and limit the ways they can be applied.

26 Dec 2011

Neuroscientists discover gene responsible for HDLS

A global team of neuroscientists, led by researchers at Mayo Clinic in Florida, have found the gene responsible for a brain disorder that may be much more common than once believed. In the Dec. 25 online issue of Nature Genetics, the researchers say they identified 14 different mutations in the gene CSF1R that lead to development of hereditary diffuse leukoencephalopathy with spheroids.

26 Dec 2011

Biologists develop radar to track ADAR's RNA editing activity in neurons

To track what they can't see, pilots look to the green glow of the radar screen. Now biologists monitoring gene expression, individual variation, and disease have a glowing green indicator of their own: Brown University biologists have developed a "radar" for tracking ADAR, a crucial enzyme for editing RNA in the nervous system.

26 Dec 2011

UCSF professor receives 2012 Paul Ehrlich and Ludwig Darmstaedter Prize

Peter Walter, PhD, a professor in the Biochemistry and Biophysics Department within the School of Medicine at the University of California, San Francisco has been awarded the 2012 Paul Ehrlich and Ludwig Darmstaedter Prize for his "outstanding research achievements in the field of cell biology."

26 Dec 2011

PMC receives $100,000 donation for new mesothelioma research laboratory

Pacific Meso Center (PMC) at the Pacific Heart, Lung & Blood Institute (PHLBI) announces a generous donation of $100,000 from Roger and Ann Worthington.

26 Dec 2011