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New genomic test can personalize breast cancer treatment

A set of 50 genes can be used to reliably identify the four known types of breast cancer, according to research conducted at Washington University School of Medicine in St. Louis and collaborating institutions.

9 Feb 2009

New understanding of how leukemia develops

In a collaborative study published Feb. 9, 2009, in the Proceedings of the National Academy of Sciences (PNAS), scientists performed a genome-wide expression analysis comparing highly enriched normal blood stem cells and leukemic stem cells, and identified several new pathways that have a key role in cancer development.

9 Feb 2009

Body's defenses may worsen chronic obstructive pulmonary disorder

Although the immune system is designed to protect the body from harm, it may actually worsen one of the most difficult-to-treat respiratory diseases: chronic obstructive pulmonary disorder (COPD), according to new University of Cincinnati (UC) research.

9 Feb 2009

Atorvastatin and lovastatin found to be ineffective for breast cancer prevention

Laboratory work in animals showed limited activity when statins were given to prevent breast cancer, according to a report in the February issue of Cancer Prevention Research , a journal of the American Association for Cancer Research.

8 Feb 2009

Chemical mediator in blood found to also control breakdown of bone

A new study demonstrates that a chemical mediator in the blood that influences immune cell migration also plays a key role in maintaining the balance between the build-up and breakdown of bones in the body.

8 Feb 2009

Long-sought protein structure may help reveal how 'gene switch' works

The bacterium behind one of mankind's deadliest scourges, tuberculosis, is helping researchers at the Commerce Department's National Institute of Standards and Technology (NIST) and the Department of Energy's Brookhaven National Laboratory (BNL) move closer to answering the decades-old question of what controls the switching on and off of genes that carry out all of life's functions.

8 Feb 2009

Sangamo BioSciences starts trial of CCR5-ZFP therapeutic to treat HIV/AIDS

Sangamo BioSciences, Inc. has announced that its collaborators at the University of Pennsylvania have opened a Phase 1 clinical trial to evaluate SB-728-T for the treatment of HIV/AIDS.

5 Feb 2009

Neural mapping paints a haphazard picture of odor receptors

Despite the striking aromatic differences between coffee, peppermint, and pine, a new mapping of the nose's neural circuitry suggests a haphazard patchwork where the receptors for such disparate scents are as likely as not to be neighbors.

3 Feb 2009

New clues to pancreatic cells' destruction in diabetes

Researchers have found what appears to be a major culprit behind the loss of insulin-producing beta cells from the pancreases of people with diabetes, a critical event in the progression of the disease.

3 Feb 2009

Genetics may predict risk for relapse among alcohol-dependent patients

In Poland, alcohol dependence (AD) affects about four percent of the population, causing about 10,000 deaths per year.

3 Feb 2009

Peptide loaded gold nanospheres find, penetrate, then fuel burning of melanoma

Hollow gold nanospheres equipped with a targeting peptide find melanoma cells, penetrate them deeply, and then cook the tumor when bathed with near-infrared light, a research team led by scientists at The University of Texas M. D. Anderson Cancer Center reported in the Feb. 1 issue of Clinical Cancer Research.

2 Feb 2009

Stat3 signaling tips the balance of immunity in favor of cancer

New research reveals how a cancer-associated protein enables tumor cells to evade the immune system by both suppressing antitumor influences and promoting tumor-enhancing conditions, in essence turning the immune system to the dark side of the force.

2 Feb 2009

Sedative dexmedetomidine may offer advantages over agents often used for sedation in ICU

Use of the sedative dexmedetomidine for critically ill patients resulted in less time on a ventilator and less delirium compared to patients administered a more commonly used drug, according to a study in the February 4 issue of JAMA, the Journal of the American Medical Association.

2 Feb 2009

Study identifies potential 'safe period' for hormone replacement use

A new study makes important new findings on the role of hormone use on the risk of breast cancer, confirming that the use of estrogen plus progesterone increases the risk of both ductal and lobular breast cancer far more than estrogen-only; suggesting a two-year 'safe' period for the use of estrogen and progesterone; and finding that the increased risk for ductal cancers observed in long-term past users of hormone replacement therapy drops off substantially two years after hormone use is stopped.

2 Feb 2009

Brain cells called astrocytes, not neurons, lull the brain to sleep

Brain cells called astrocytes help to cause the urge to sleep that comes with prolonged wakefulness, according to a study in mice, funded by the National Institutes of Health.

2 Feb 2009

Orexin - natural brain substance - blocks weight gain in mice

Mice with increased levels of a natural brain chemical don't gain weight when fed a high-fat diet, researchers at UT Southwestern Medical Center have found.

29 Jan 2009

Discovery of brain's memory 'buffer' in single cells

Individual nerve cells in the front part of the brain can hold traces of memories on their own for as long as a minute and possibly longer, researchers at UT Southwestern Medical Center have found.

27 Jan 2009

Researchers identify risk factors for breast cancer in the opposite breast

A preventive procedure to remove the unaffected breast in breast cancer patients with disease in one breast may only be necessary in patients who have high-risk features as assessed by examining the patient's medical history and pathology of the breast cancer, according to researchers at The University of Texas M. D. Anderson Cancer Center.

27 Jan 2009

Opposite approach to asthma treatment may be in order

Just when the Food and Drug Administration is reconsidering the use of stimulants to treat asthma, a new research study offers further evidence to support a University of Houston professor's theory that an opposite approach to asthma treatment may be in order.

27 Jan 2009

Gene therapy for rheumatoid arthritis: promising results

Researchers have reported the first clinical evidence that gene therapy reduces symptoms in patients with rheumatoid arthritis, an important milestone for this promising treatment which has endured a sometimes turbulent past.

27 Jan 2009