In 2020, NASA and European-Russian missions will look for evidence of past life on Mars. But while volcanic, igneous rock predominates on the Red Planet, virtually the entire Earth fossil record comes from sedimentary rocks. Addressing the problem in Frontiers in Earth Science, Swedish scientists have begun compiling evidence of fossilized microbes in underexplored igneous rock environments on Earth, to help guide where to search for a Martian fossil record - and what to look for.
A multidisciplinary team has provided new insight into underlying mechanisms controlling the precise size of cells. The researchers found that 'the adder,' a function that guides cells to grow by a fixed size from birth to division, is controlled by specific proteins that accumulate to a threshold.
Researchers have mapped the molecular structure and dynamics of an aggressive protein modification that spurs on Alzheimer's disease. A new study in the Proceedings of the National Academy of Sciences offers greater understanding of the microscopic, toxic protein fragments, called beta amyloids (Aβ), that cause rapid acceleration of Alzheimer's disease.
Evolution and dietary habits interact and determine the composition of bacteria in the digestive tract. Many microorganisms in the intestine seem to have developed in sync with their host animals over millions of years.
Researchers at The University of Chicago have demonstrated that the type of bacteria living in the gut can influence the development of Alzheimer's disease symptoms in mice. The study, which will be published May 16, 2019 in the Journal of Experimental Medicine, shows that, by altering the gut microbiome, long-term antibiotic treatment reduces inflammation and slows the growth of amyloid plaques in the brains of male mice, though the same treatment has no effect on female animals.
Changes to alpine streams fed by glaciers and snowfields due to a warming climate threaten to dramatically alter the types of bacteria and other microbes in those streams, according to new research. But streams that are fed by underground ice insulated by rock -- called 'icy seeps' -- offer some hope that the impact of climate change will be less severe in some areas.
In a new hypothesis, a CRC 1182 research team suggests that inflammatory diseases are caused by an over-supply of food, and the associated disturbance of the intestine's natural bacterial colonisation.
When people fall ill from bacterial infection, the first priority is to treat the disease. An international team led by Matthias Horn from the Centre for Microbiology and Environmental Systems Science at the University of Vienna has tackled the question where do these pathogens come from using an important bacterial pathogen that causes lung disease. The results of their study have been published recently in the scientific journal mBio.
For the first time researchers of BacBio Laboratory of the University of Malaga have evidenced that the combination of 'Bacillus subtilis' and 'Pseudomonas' bacteria can improve plants' health.
The existence of certain microorganisms in your gut may bolster the immune system's ability to fend off a herpes viral attack that can cause fatal brain inflammation. Researchers say the findings are the first to suggest that an envelope molecule from a bacterium called Bacteroides fragilis (B. fragilis) might be useful against viral inflammatory diseases. Called capsular polysaccharide A (PSA), the envelope molecule appears to promote protective, anti-inflammatory responses during a viral infection.