University of Arizona researchers have identified a network of neurons that coordinate with other brain regions to influence eating behaviors. These findings could help those suffering from disease-induced appetite loss or over-eating.
For the first time, scientists exposed pregnant and lactating mice to sucralose and acesulfame-K -- a common combination in soda, sports supplements and other sweetened products -- and found their pups developed harmful metabolic and gut bacteria changes. Published in Frontiers in Microbiology, the study reinforces an emerging consensus: artificial sweeteners may be safe when used in moderation by adults, but they are not a 'magic bullet' alternative to sugar.
Around half of patients admitted to hospital in Vietnam are carriers of multiresistant intestinal bacteria, which are resistant to carbapenems, a group of broad-spectrum antibiotics. This is the conclusion of a study by Swedish and Vietnamese scientists led by Linköping University, published in the Journal of Infection.
Stem cells are not only key players in tissue regeneration, they are also capable of taking direct action against bacteria. This is the finding of a study conducted by researchers from Charité - Universitätsmedizin Berlin, which describes what happens during a Helicobacter pylori infection of the human stomach. By actively fighting the colonizing bacteria, gastric stem cells protect themselves against damage that can lead to cancer. Results from this study have been published in Nature Cell Biology.
Kentron, a bacterial symbiont of ciliates, turns cellular waste products into biomass. It is the first known sulfur-oxidizing symbiont to be entirely heterotrophic. Researchers from the Max Planck Institute for Marine Microbiology now report about this unexpected bacterium that turns waste into food.
In a new study, published on June 25, 2019, in the journal eLife, the researchers report that higher levels of doublets -- long dismissed as technical artifacts -- can be found in people with severe cases of tuberculosis or dengue fever.
Florida State researchers working in the Democratic Republic of the Congo found a link between the churning of deep soils during deforestation and the release of carbon dioxide through streams and rivers.
A collaborative team of Harvard researchers pinpointed one specific group of bacteria, called Veillonella, that they found was enriched in the gut microbiome of Boston Marathon runners after after completing the 26.2 race and in an independent group of 87 elite and Olympic athletes after competitions. Veillonella bacteria isolated from marathon athletes and given to mice increased the animals' performances in laboratory treadmill tests by 13% compared to control bacteria.
A team of investigators has developed a cancer vaccine technology using live, attenuated pathogens as vectors. A feature of the vaccine causes these bacteria to self-destruct once they've done their job, making it safe for use in humans.
Long ago, during the European Renaissance, Leonardo da Vinci wrote that we humans 'know more about the movement of celestial bodies than about the soil underfoot.' Five hundred years and innumerable technological and scientific advances later, his sentiment still holds true. But that could soon change. A new study in Nature Communications details how an improved method for studying microbes in the soil will help scientists understand both fine-grained details and large-scale cycles of the environment.