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  • developing fetus illsutration
  • mice
  • Massospora cicadina
Your search has returned 461 articles:
  • News

    A new study challenges the idea that the placenta has a microbiome

    Contrary to earlier reports, the human placenta is largely free of microbes, a study finds. The new result follows years of debate over whether the organ that nourishes and protects a growing fetus also holds bacteria.   

    Dueling evidence has been accumulating both for and against the presence of microbes in placentas. Amid the back-and-forth, molecular biologist Stephen Charnock-Jones...

    07/31/2019 - 13:00 Health, Human Development, Microbiology
  • News

    Immune system defects seem to contribute to obesity in mice

    Subtle defects in the immune system may lead to obesity and type 2 diabetes, a study of mice suggests.

    Mice gained weight and developed health problems when they carried a genetic defect that dampens some immune functions, researchers report in the July 26 Science. The immune problems were linked to shifts in the gut microbiome — the collection of friendly bacteria and other microbes...

    07/25/2019 - 14:00 Microbiology, Immune Science, Physiology
  • News in Brief

    These fungi drug cicadas with psilocybin or amphetamine to make them mate nonstop

    SAN FRANCISCO — A cicada-infecting fungus produces drugs that make the insects literally mate their butts off.

    Massospora fungi make either a drug found in hallucinogenic mushrooms or an amphetamine found in khat leaves, plant pathologist Matthew Kasson of West Virginia University in Morgantown reported June 22 at the ASM Microbe 2019 meeting.

    The fungi may use psilocybin, which...

    06/25/2019 - 14:42 Microbiology, Animals
  • News in Brief

    Dried Earth microbes could grow on Mars with just a little humidity

    SAN FRANCISCO — Salt-loving microbes can dry out and come back to life with just a little humidity, researchers have demonstrated for the first time.

    Scientists have suspected that microbes in arid places may get their moisture from humidity alone, but no one has shown that dried-out microbes can revive with water sucked from the air. Dessicated Halomonas bacteria from Washington’s Hot...

    06/25/2019 - 06:00 Microbiology
  • News

    Gut microbes might help elite athletes boost their physical performance

    One difference between elite athletes and the rest of us might be in what hangs out in their guts.

    Microbes that flourished in the guts of some runners after a marathon boosted the time that lab mice ran on a treadmill, researchers report June 24 in Nature Medicine. These particular microbes seem to take lactate, pumped out by muscles during exercise, and turn it into a compound that may...

    06/24/2019 - 11:00 Microbes, Biomedicine, Microbiology
  • News

    Norovirus close-ups might help fight stomach flu

    Knowing your enemy is an important principle of competition, and scientists may just have become more familiar with one nasty stomach virus.

    Closeup looks at several strains of norovirus reveal that the vomit- and diarrhea-inducing virus can come in a variety of sizes, researchers report online June 10 in the Proceedings of the National Academy of Sciences. Knobs studding the virus’s...

    06/17/2019 - 10:00 Microbiology, Microbes, Health
  • News

    Gut bacteria may change the way many drugs work in the body

    Prescribing the best medication may require going with a patient’s gut — or at least, the bacteria that live there.

    Anecdotal reports have revealed that some gut-dwelling microbes chemically alter oral medications, affecting how well those drugs work (SN Online: 7/19/13). But the scope of this problem has remained unclear. Now, a sweeping survey of these interactions suggests that gut...

    06/03/2019 - 11:00 Microbiology, Biomedicine, Health
  • News

    How bacteria nearly killed by antibiotics can recover — and gain resistance

    Mostly dead bacteria can sometimes be resurrected as antibiotic-resistant cells.

    A protein that pumps toxic chemicals out of E. coli bacterial cells can buy time for even nearly dead microbes to become antibiotic resistant. The protein, known as the AcrAB-TolC multidrug efflux pump, doesn’t work well enough to defeat antibiotics on its own. But it can move enough antibiotic molecules out...

    05/28/2019 - 06:00 Microbiology, Genetics, Biomedicine
  • News

    A gut bacteria transplant may not help you lose weight

    Changing your gut microbes may not help you lose belly fat.

    In a preliminary study, obese people got either capsules containing gut microbes from a lean person or placebo pills. Microbes from the lean donor took hold in the guts of the obese recipients. But early results suggest that the bacteria didn’t change the volunteers’ weight or levels of a hormone that helps signal fullness,...

    05/09/2019 - 00:05 Microbiology, Health, Clinical Trials
  • 50 years ago, scientists were unlocking the secrets of bacteria-infecting viruses

    Unusual virus is valuable tool —

    Viruses, which cannot reproduce on their own, infect cells and usurp their genetic machinery for use in making new viruses.... But just how viruses use the cell machinery is unknown.… Some answers may come from work with an unusual virus, called M13, that has a particularly compatible relationship with ... [E. coli] bacteria. — Science News, April 5...

    04/05/2019 - 06:00 Microbiology