Feeding the microbes within. 1,100 Words on Duke Research. Sept. 27, 2018. To digest his leafy diet, this lemur gets a little help from the trillions of bacteria that inhabit his gut.
Category Archives: bacteria
Deadly molecules in motion
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Deadly molecules in motion. 1,100 Words on Duke Research, August 22, 2018. To some, this may look like a disco ball. But to one research team, it represents the elusive dance of a shape-shifting protein, SpA , which helps the bacterium Staphylococcus aureus evade its host’s defenses.
Lemur research gets a gut check
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Lemur research gets a gut check. Duke Research blog, June 19, 2017. Researchers have tracked changes in lemur gut microbiomes during and after infection with a widespread intestinal parasite called Cryptosporidium. The diarrheal illness caused by the parasite wipes out much of the animals’ gut flora, the researchers found, but fecal transplants can help them recover. The team says their findings could help develop probiotic treatments for captive primates, as well as humans battling similar diarrheal diseases.
Disentangling the plant microbiome
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Disentangling the plant microbiome. Duke Today, July 12, 2016. With the human population expected to climb from 7.4 billion to more than 11 billion people by 2100, some scientists hope that manipulating the microbial communities in, on and around plants, the plant microbiome, could open up new ways to meet the growing demand for food. But breeding a better microbiome may be easier in some plant tissues and growing conditions than others, finds a study led by researchers at Duke University.
Why bearcats smell like buttered popcorn
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Why bearcats smell like buttered popcorn. Duke Today, April 13, 2016. The bearcat. The binturong. Whatever you call this shy, shaggy-haired creature from Southeast Asia, many people who have met one notice the same thing: it smells like a movie theater snack bar. Most describe it as hot buttered popcorn. And for good reason — the chemical compound that gives freshly made popcorn its mouthwatering smell is also the major aroma emitted by binturong pee, finds a new study. Picked up by Huffington Post, Scientific American, Discovery News, National Geographic, NPR in Boston, New York Magazine, the Daily Mail, Science News and Popular Science.
New way to detect human-animal diseases tested in lemurs
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New way to detect human-animal diseases tested in lemurs. Duke Today, Jan. 27, 2016. RNA sequencing is uncovering emerging diseases in wildlife that other diagnostic tests cannot detect. Researchers used a technique called transcriptome sequencing to screen for blood-borne diseases in Madagascar’s lemurs, distant primate cousins to humans. The animals were found to be carrying several previously unknown parasites similar to those that cause Lyme disease in humans. The approach could pave the way for earlier, more accurate detection of disease outbreaks that move between animals and people.
Gregarious chimps harbor richer gut microbiomes
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Gregarious chimps harbor richer gut microbiomes. Duke Today, Jan. 15, 2016. Spending time in close contact with others means risking catching germs and getting sick. But being sociable may also help transmit “good” microbes, finds a new study. Researchers monitored changes in the gut microbiomes and social behavior of chimpanzees over eight years in Tanzania. The number of bacterial species in a chimp’s GI tract increased when the chimps were more gregarious. The results help scientists understand the factors that maintain a healthy gut microbiome. Picked up by Quartz, Pacific Standard, Smithsonian, The Atlantic, Scientific American, Futurity, The Scientist, Daily Mail, PBS News Hour and Popular Science.
Pinpointing the cause of coughs and sneezes
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Pinpointing the cause of coughs and sneezes. Duke Research blog, July 30, 2015. Duke University students are trying to help doctors find a faster way to pinpoint the cause of their patients’ coughs, sore throats and sniffles. Undergraduates have teamed up with researchers at Duke Medicine to identify blood markers that could be used to tell whether what’s making someone sick is a bacteria, or a virus. The goal is to better determine if and when to give antibiotics in order to stem the rise of drug-resistant superbugs. Picked up by Nature.
Plant light sensors came from ancient algae
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Plant light sensors came from ancient algae. Duke Today, July 28, 2015. The light-sensing molecules that tell plants whether to germinate, when to flower and which direction to grow were inherited millions of years ago from ancient algae, finds a new study. The findings are some of the strongest evidence yet against the prevailing idea that the ancestors of early plants got the red light sensors that helped them move from water to land by engulfing bacteria, the researchers say.
Gut worms protect babies’ brains from inflammation
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Gut worms protect babies’ brains from inflammation. Duke Today, July 20, 2015. A study in rats finds that gut worms can protect babies’ brains from inflammation and long-term learning and memory problems caused by bacterial infections in newborns. Expectant mother rats with tapeworms even passed the protective benefits on to their worm-free pups, the researchers found. The findings could point to new ways to prevent or treat the chronic brain inflammation linked to cognitive disorders like Alzheimer’s disease, autism and depression. Picked up by Science Magazine and the Philadelphia Inquirer.
Baboon friends swap gut germs
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Baboon friends swap gut germs. Duke Today, March 16, 2015. The warm soft folds of the intestines are teeming with thousands of species of bacteria that help break down food, synthesize vitamins, regulate weight and resist infection. If they’re so key to health, what factors shape an individual’s gut microbial makeup? Previous studies have pointed to the food we eat, the drugs we take, genetics, even house dust. Now, a new study in baboons suggests that relationships may play a role, too. Picked up by The Scientist.
Predicting superbugs’ countermoves to new drugs
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Predicting superbugs’ countermoves to new drugs. Duke Today, Jan. 5, 2015. With drug-resistant bacteria on the rise, even common infections that were easily controlled for decades are proving trickier to treat with standard antibiotics. New drugs are desperately needed, but so are ways to maximize the effective lifespan of these drugs. To accomplish that, Duke University researchers used software they developed to predict a constantly-evolving infectious bacterium’s countermoves to one of these new drugs ahead of time, before the drug is even tested on patients. Picked up by the Duke Chronicle, The Scientist and Time Magazine.
Genes from undersea creature may help crops prosper
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Genes from undersea creature may help crops prosper. Raleigh News and Observer, April 16, 2012. The bottles of amber liquid perched on the bench in Dr. Amy Grunden’s research lab at N.C. State University don’t look like much. But floating within are billions of sea-dwelling microbes – too small to see with the naked eye – that researchers hope will one day help plants survive in space, or produce hardier crops and better biofuels in stressful environments here on Earth.
Deadly bird parasite evolves at exceptionally fast rate
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Deadly bird parasite evolves at exceptionally fast rate. National Evolutionary Synthesis Center, February 9, 2012. A new study of a devastating bird disease that spread from poultry to house finches in the mid-1990s reveals that the bacteria responsible for the disease evolves at an exceptionally fast rate. What’s more, the fast-evolving microbe has lost a key chunk of its genome since jumping to its new host, scientists were surprised to find. Picked up by MSNBC.
Microbe-managing your life
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Microbe-managing your life. Raleigh News and Observer, September 19, 2011. Can gut parasites be good for you? It may sound far-fetched. But for those with off-kilter immune systems, scientists are finding hope in some unlikely allies.
New study pinpoints why some microbial genes are more promiscuous than others
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New study pinpoints why some microbial genes are more promiscuous than others. National Evolutionary Synthesis Center, March 16, 2011. A new study of more than three dozen species — including the microbes responsible for pneumonia, ulcers and plague — settles a longstanding debate about why bacteria are more likely to steal some genes than others.