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Study shows why some immune systems control HIV
Scientists are beginning to change their thinking about why the immune systems of most people infected with HIV cannot control the spread of the virus while the immune systems of a rare group of individuals, called long-term nonprogressors, can. For some time, scientists thought that people who could not control HIV had too few HIV-fighting white blood cells called CD8+ T cells. However, a new study suggests the difference is not the number but the quality of these cells: both nonprogressors and others have about the same number of HIV-fighting CD8+ T cells, but the cells of nonprogressors function better.
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Most definitive study of its kind shows that sleeping on the stomach increases infant SIDS risk
Researchers have conducted the most definitive study of its kind to show that sleeping on the stomach increases the risk of U.S. infants for Sudden Infant Death Syndrome (SIDS). Previously, researchers had relied largely on overseas studies for making the recommendation that infants be placed on the back to sleep in order to reduce their risk for SIDS. more
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Combining two types of radiation therapy better for treating brain cancer
Adding stereotactic radiosurgery after whole brain radiation therapy helps certain patients with cancer that has spread to the brain live longer, says a new study. more
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New breast cancer gene discovered
Scientists at Cold Spring Harbor Laboratory and the University of Washington have discovered a new tumor suppressor gene that is missing or inactive in as many as 60% of breast cancers, and is also altered in lung cancer. more
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Cholesterol fighting drugs may also have protective effects against multiple sclerosis
A group of cholesterol-lowering drugs may also effectively interfere with the progression of multiple sclerosis (MS). These drugs, known as statins, greatly reduce hardening of the arteries (atherosclerosis) and heart disease, mainly by their cholesterol and low-density lipoprotein-lowering properties. more
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