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E.g., 08/19/2019
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Your search has returned 4343 articles:
  • News

    Alzheimer’s targets brain cells that help people stay awake

    Alzheimer’s disease destroys command centers in the brain that keep people awake. That finding could explain why the disease often brings daytime drowsiness.

    Sleep problems can precede dementias, including Alzheimer’s, sometimes by decades. But the new result, described online August 12 in Alzheimer’s & Dementia, suggests that disordered sleeping isn’t just an early harbinger of...

    08/16/2019 - 11:30 Health, Biomedicine, Neuroscience
  • News in Brief

    A new FDA-approved drug takes aim at a deadly form of tuberculosis

    An especially dangerous type of tuberculosis may have met its match.

    The U.S. Food and Drug Administration announced August 14 that it has approved the antibiotic pretomanid to help tackle what’s called extensively drug-resistant tuberculosis. This form of the disease is resistant to at least four of the main TB drugs, and treatment often fails: Only around 34 percent of infected...

    08/16/2019 - 06:00 Health, Biomedicine
  • News

    The first chlamydia vaccine has passed a major test

    The first vaccine against chlamydia has passed its first test in humans.

    About three dozen healthy women were randomly assigned one of two versions of a chlamydia vaccine or a placebo treatment in a clinical trial. Both vaccine versions were shown to be safe, and both produced an immune response not seen in the placebo group, researchers report online August 12 in the Lancet Infectious...

    08/15/2019 - 06:00 Health, Biomedicine
  • News

    CRISPR enters its first human clinical trials

    Since its debut in 2012, CRISPR gene editing has held the promise of curing most of the over 6,000 known genetic diseases. Now it’s being put to the test.

    In the first spate of clinical trials, scientists are using CRISPR/Cas9 to combat cancer and blood disorders in people. In these tests, researchers remove some of a person’s cells, edit the DNA and then inject the cells back in, now...

    08/14/2019 - 08:00 Genetics, Biomedicine, Science & Society
  • News in Brief

    Why people with celiac disease suffer so soon after eating gluten

    Researchers finally know why people with celiac disease get nauseous within hours of eating gluten.

    Some immune cells dump stomach-churning levels of immune chemicals called cytokines into the blood soon after the cells encounter gluten, triggering symptoms, scientists report August 7 in Science Advances.

    “When patients ate gluten, symptoms and cytokines went up at the same time,”...

    08/07/2019 - 14:00 Immune Science, Cells, Biomedicine
  • Feature

    How pieces of live human brain are helping scientists map nerve cells

    The golf ball–sized chunk of brain is not cooperating. It’s thicker than usual, and bloodier. One side has a swath of tissue that looks, to my untrained eye, like gristle.

    Nick Dee, the neuroscientist charged with quickly cutting the chunk into neat pieces, confers with his colleagues. “We can trim off that ugliness on the side,” he says. The “ugliness” is the brain’s connective tissue...

    08/07/2019 - 06:00 Health, Biomedicine
  • Letters to the Editor

    Readers respond to Lyme disease, fossil teeth and a Tesseract look-alike

    Lyme light

    Lyme disease is hard to detect, but scientists are investigating new diagnostic approaches that could help people get treated for the tickborne illness sooner, Laura Beil reported in “New approaches may help solve the Lyme disease diagnosis dilemma” (SN: 6/22/19, p. 22).

    “I found the info in a recent issue about better ways to detect Lyme disease to be very interesting,”...

    08/06/2019 - 05:15 Biomedicine, Anthropology
  • Letters to the Editor

    Readers inquire about measles, vaccine hesitancy and more

    Tough choices

    Discussing shared health goals with vaccine-hesitant parents may help doctors get those parents on board, Aimee Cunningham reported in “Finding common ground can reduce parents’ hesitation about vaccines” (SN: 6/8/19, p. 16).

    Reader Dona Chilcoat objected to a photo in the story that showed a crying baby getting a shot. She thought the image might help reinforce anti-­...

    07/28/2019 - 06:15 Health, Biomedicine, Anthropology
  • News

    Boosting a gut bacterium helps mice fight an ALS-like disease

    A friendly gut bacterium can help lessen ALS symptoms, a study of mice suggests.

    Mice that develop a degenerative nerve disease similar to amyotrophic lateral sclerosis (ALS), or Lou Gehrig’s disease, fared better when bacteria making vitamin B3 were living in their intestines, researchers report July 22 in Nature. Those results suggest that gut microbes may make molecules that can slow...

    07/22/2019 - 11:00 Neuroscience, Cells, Biomedicine
  • 50 years ago, lambs survived but didn’t thrive inside artificial wombs

    Watching the unborn —

    An artificial womb has been used to keep some 35 fetal lambs alive for up to 55 hours … researchers [still] have to show that a fetus can actually grow, not just survive, in their man-made womb…. Eventually, it might be possible to place extremely premature infants into such a womb … to support them until they can survive on their own. — Science News, July 5,...

    07/18/2019 - 07:00 Biomedicine, Technology