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Separating chromosomes improves genetic test results

A new process that helps unmask genetic mutations by separating chromosomes so they can be studied individually may improve the diagnostic yield of some genetic tests, according to findings of a Colon Cancer Family Registry study published today in the Journal of the American Medical Association.

16 Feb 2005

Private health covering more older Australians

Australian Medical Association President, Dr Bill Glasson, said today that the AMA was encouraged that older Australians are taking up private health insurance in greater numbers.

16 Feb 2005

Blood tests improve within two weeks of quitting smoking

Long-term smokers who quit may benefit from almost immediate improvements in blood platelet function, which could potentially reduce their risk of heart attacks or strokes caused by blood clots, according to a new study in the Feb. 15, 2005 issue of the Journal of the American College of Cardiology.

16 Feb 2005

Heart repair linked to migraine relief

Migraine headache patients reported the painful attacks eased or even vanished after they underwent procedures to close abnormalities that allow blood to flow between the atria of their hearts, according to the results of two new studies in the current issue of the Journal of the American College of Cardiology.

16 Feb 2005

Midwives urge payment equity under Medicare

Legislation introduced into Congress today would provide for long overdue adjustments to Medicare reimbursement rates for services provided by certified nurse-midwives, according to the American College of Nurse-Midwives (ACNM).

16 Feb 2005

Immediate access to antibiotics stems spread of sexually transmitted diseases

In an editorial to be published in The New England Journal of Medicine, researchers at Johns Hopkins offer their support for a study which shows that providing faster, more direct access to antibiotics for partners of newly infected patients reduces re-infection rates and spread of sexually transmitted diseases, such as gonorrhea and Chlamydia, compared to standard practice.

16 Feb 2005

Programmed cell death may provide clues to cancer and autoimmune diseases therapies

Dartmouth Medical School geneticists have found links in the cell death machinery of worms and mammals, opening new avenues for studying and targeting a process vital to development and implicated in cancer and autoimmune diseases.

16 Feb 2005

Young blood revives aging muscles

Any older person can attest that aging muscles don't heal like young ones. But it turns out that's not the muscle's fault. A study in the Feb. 17 issue of Nature shows that it's old blood that keeps the muscles down.

16 Feb 2005

IVF process may lack natural growth factors in fluid

The lack of natural growth factors in the fluid in which IVF embryos are grown could have lifelong effects on people conceived this way. That is the implication of a study on mice by Australian researchers, who say preliminary studies of human embryos back their claims.

16 Feb 2005

Clinical trial of newest technology to treat thoracic aortic aneurysms

A clinical trial is underway at the Hospital of the University of Pennsylvania (HUP) to study the safety and effectiveness of an endovascular medical device to treat life-threatening thoracic aortic aneurysms. Ronald Fairman, MD, Chief of Vascular Surgery at HUP, is leading the study at Penn and is one of 35 principal investigators in North America to participate in this landmark trial.

16 Feb 2005

Single gene variant may increase a man's risk of prostate cancer by 50%

In 2001, Mount Sinai researchers published a study in Science that showed that a gene, known as KLF6, fails to function properly in at least 50 to 60 percent of all prostate cancers. This was the first single gene shown to be responsible for the majority of cases of this disease, which affects approximately 200,000 men each year.

16 Feb 2005

Protein may provide a powerful new therapeutic tool for fighting kidney failure

Kidney failure is a significant risk for patients undergoing cardiopulmonary bypass surgery, radiologic testing, antibiotic therapy or in patients suffering from severe infections. More than 80 percent of patients with postoperative acute renal failure die.

16 Feb 2005

Antigens produced by the Epstein Barr virus may provide an ideal target for cancer therapy

A typically innocuous virus found in 90 percent of people worldwide is the key to a new treatment for a cancer particularly common in North Africa and Southeast Asia.

16 Feb 2005

Changing chemistry helps explain estrogen threat to the heart

A piece of the topical puzzle of how estrogen goes from protecting women from heart disease to apparently increasing their risk later in life may have been found.

16 Feb 2005

Early epidurals do not increase risk of Cesarean delivery

A study published in this week's New England Journal of Medicine by researchers at Northwestern Memorial Hospital refutes the popular belief that getting an epidural early in labor increases a woman's risk of cesarean delivery.

16 Feb 2005

Merck issues statement on Vioxx lawsuits

The federal Judicial Panel on Multidistrict Litigation today granted motions by several parties, including Merck, to transfer all Vioxx product liability lawsuits pending in federal courts nationwide into one consolidated Multidistrict Litigation (MDL) for coordinated pre-trial proceedings.

16 Feb 2005

Nanoscale mechanism to externally control the function and action of a protein

"We can switch a protein on and off, and while we have controlled a specific protein, we believe our approach will work with virtually any protein," said Giovanni Zocchi, assistant professor of physics at UCLA, member of the California NanoSystems Institute and leader of the research effort. "This research has the potential to start a new approach to protein engineering."

16 Feb 2005

Schizophrenia may arise from a single genetic defect

Researchers have long puzzled over the apparently multiple causes of complex developmental disorders such as schizophrenia. Individuals seem to be predisposed to the disease by a tragic, mysterious combination of genetics, prenatal trauma, viral infection, and early experience.

16 Feb 2005

Research shows that individual NAc neurons play a role in Pavlovian learning

While the brain center called the nucleus accumbens (NAc) has been called a key component of the brain's "reward" pathways, researchers' experiments with rats have now shown that the center processes not only rewarding stimuli, but also aversive stimuli.

16 Feb 2005

New findings challenge one of the established views of how nerve cells communicate with one another

Every time we move, feel emotions, think or remember, the nerve cells, or neurons, in our body transmit messages to one another via chemical signals called neurotransmitters. Within neurons are tiny organelles called synaptic vesicles that sequester neurotransmitters and release them when needed into the synapse, or space between nerve cells, where the chemical signal is transmitted to other neurons.

16 Feb 2005