Nathan Seppa
Biomedical Writer (retired September 2015)
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All Stories by Nathan Seppa
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Health & MedicineInterferon delays multiple sclerosis
In some people who show early-warning signs of multiple sclerosis, the drug interferon-beta-1a seems to delay or even prevent the disease from becoming full-blown.
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Health & MedicinePill boosts cancer risk in some women
Women who took oral contraceptives before 1975, and whose mother or sister had breast cancer between 1944 and 1952, have triple the likelihood of getting breast cancer as compared with similar women who didn't take the pill.
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Health & MedicineAIDS Vaccine Tests Well in Monkeys
An experimental AIDS vaccine bolstered with two immune proteins protects rhesus monkeys from the disease even when they are exposed to a combination of simian and human immunodeficiency virus.
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Health & MedicineBacteria Provide a Frontline Defense
Bacteria genetically engineered to secrete microbe-killing compounds can fight disease in mice and rats.
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Health & MedicineSome psychoactive drugs ease harsh PMS
Drugs such as widely prescribed Prozac can relieve a severe form of premenstrual syndrome.
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Health & MedicineGene Tied to Heightened Diabetes Risk
People with three particular variations within the gene that encodes the protein calpain-10 face triple the risk of getting type II diabetes.
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Health & MedicineNerves in heart show damage in Parkinson’s
Some patients with Parkinson's disease also have destruction of nerve terminals in the heart that affects blood pressure.
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Health & MedicineStem-cell transplant works on lupus
Severe lupus can be reversed with a transplant of the patient's own bone marrow stem cells, after they're allowed to mature outside the body, and medication that neutralizes self-attacking immune cells.
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Health & MedicineOld polio vaccine free of HIV, SIV
Three laboratories analyzing remaining samples of polio vaccine used in the late 1950s find that none contains any human or simian immunodeficiency virus, or chimpanzee DNA—making polio vaccine unlikely to be the cause of the initial HIV outbreak in central Africa.
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Health & MedicineBlood-cell transplants slow kidney cancer
A new transplant technique that uses blood transfusions from a sibling combined with decreasing doses of immune-suppressing drugs enables some patients to fight off advanced kidney cancer.
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Health & MedicineCan poliovirus fix spinal cord damage?
Scientists have devised a version of the poliovirus that can deliver genes to motor neurons without harming them, a step toward a gene therapy that reawakens idle neurons in people with spinal cord damage.
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Health & MedicineCarotid surgery stands test of time
Surgery to remove blockages from the carotid artery in the neck has lasting effects against stroke over several years and even provides some benefit when it's delayed.