Nathan Seppa

Biomedical Writer (retired September 2015)

All Stories by Nathan Seppa

  1. Health & Medicine

    Interferon 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.

  2. Health & Medicine

    Pill 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.

  3. Health & Medicine

    AIDS 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.

  4. Health & Medicine

    Bacteria Provide a Frontline Defense

    Bacteria genetically engineered to secrete microbe-killing compounds can fight disease in mice and rats.

  5. Health & Medicine

    Some psychoactive drugs ease harsh PMS

    Drugs such as widely prescribed Prozac can relieve a severe form of premenstrual syndrome.

  6. Health & Medicine

    Gene 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.

  7. Health & Medicine

    Nerves 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.

  8. Health & Medicine

    Stem-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.

  9. Health & Medicine

    Old 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.

  10. Health & Medicine

    Blood-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.

  11. Health & Medicine

    Can 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.

  12. Health & Medicine

    Carotid 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.