Do bacteria age?
Any organism that lives, grows and reproduces must also age. People often think of aging in the physical sense—gray hair, slowed movements and wrinkles—but aging fundamentally occurs on a molecular level, inside of cells......»»
Urban humans have lost much of their ability to digest plants
Rural populations still have lots of the gut bacteria that break down cellulose. Enlarge (credit: Nathan Devery) Cellulose is the primary component of the cell walls of plants, making it the most common polymer on Earth......»»
Alzheimer"s drug fermented with help from AI and bacteria moves closer to reality
Galantamine is a common medication used by people with Alzheimer's disease and other forms of dementia around the world to treat their symptoms. Unfortunately, synthesizing the active compounds in a lab at the scale needed isn't commercially viable......»»
Why eukaryotes, not bacteria, evolved complex multicellularity
Prokaryotic single-celled organisms, the ancestors of modern-day bacteria and archaea, are the most ancient form of life on our planet, first appearing roughly 3.5 billion years ago. The first eukaryotic cells appeared around 1–1.5 billion years la.....»»
Sugar-coated gold nanoparticles can quickly eliminate bacterial infections, no antibiotics required
If left to their own devices, bacteria on our teeth or wounded skin can encase themselves in a slimy scaffolding, turning into what is called biofilm. These bacteria wreak havoc on our tissue and, being shielded from antibiotic medication by the slim.....»»
Exploring the transferability of extracytoplasmic function switches across bacterial species
Extracytoplasmic function sigma factors (ECFs) have been successfully used for constructing predictable artificial gene circuits in bacteria like Escherichia coli, but their transferability between species within the same phylum remained unknown......»»
Researchers connect declining atmospheric sulfur dioxide levels to rise in Legionnaires" disease
Declining atmospheric sulfur dioxide levels might be related to the global rise in Legionnaires' disease—a severe form of pneumonia caused by inhaling the pathogenic bacteria Legionella. So reports a new University at Albany study, published today.....»»
Our bacteria are more personal than we thought, new study shows
The trillions of bacteria that call your body home—collectively known as the microbiome—appear to be unique to you, like a fingerprint. That's one conclusion of a detailed study of the gut, mouth, nose and skin microbiomes of 86 people. Over the.....»»
Scientists find that micronuclei are not the primary trigger of the cGAS/STING pathway
Cells possess an innate immune system that defends against invasive pathogens such as bacteria and viruses. Previous studies have mapped out the cytoplasmic cGAS-STING pathway in the cytoplasm, known for responding to foreign nucleic acids, such as d.....»»
Exploring the bactericidal activity of T1-spanin against drug-resistant bacteria
Given the worldwide prevalence of drug-resistant bacteria, the research community is on the lookout for alternative bactericidal treatment approaches. In a recent study, Japanese researchers have now compared bacteriophage-derived enzymes for combati.....»»
Early experiments show Ebola-fighting potential of engineered bacteria
Since its 1976 emergence in Africa, the Ebola virus has proven an especially lethal contagion, killing roughly 50% of the people who contract it. The 2019 FDA approval of a vaccine, combined with the subsequent development of two antibody-based drugs.....»»
Researchers reveal how a virus hijacks insect sperm: May help control disease vectors and pests
A widespread bacteria called Wolbachia and a virus that it carries can cause sterility in male insects by hijacking their sperm, preventing them from fertilizing eggs of females that do not have the same combination of bacteria and virus......»»
A consortium of algae and bacteria boosts the production of green hydrogen and biomass while cleaning water
The mutual relationship between algae and three bacteria studied by a team at the University of Cordoba presents the highest hydrogen production obtained so far by this type of consortium.....»»
Possible "Trojan Horse" found for treating stubborn bacterial infections
Bacteria can be tricked into sending death signals to stop the growth of their slimy, protective homes that lead to deadly infections, a new study demonstrates......»»
Researchers demonstrate control of living cells with electronics
E. coli bacteria and an electronic device might seem to have little in common, but in a recent experiment, University of Maryland researchers linked them into the first closed-loop system able to communicate across the technological–biological divi.....»»
Emerging Salmonella variety in dairy cows found to worsen antimicrobial resistance
A study of more than 5,000 Salmonella bacteria isolated over 15 years from dairy cattle samples in the Northeast reveals a significant increase in resistance to the antimicrobial medications ampicillin, florfenicol and ceftiofur......»»
Scientists and government agencies are targeting mosquitoes with bacteria
Dengue fever is one of the most common tropical diseases in the world, affecting several million people every year......»»
Radio waves can tune up bacteria to become life-saving medicines
Scientists from Australia and the United States have found a new way to alter the DNA of bacterial cells—a process used to make many vital medicines including insulin—much more efficiently than standard industry techniques......»»
Scientists discover 18 new species of gut microbes in search for origins of antibiotic resistance
In a paper published February 28 in Proceedings of the National Academy of Sciences (PNAS), a research team describes the discovery of 18 never-before-seen species of bacteria of the Enterococcus type that contain hundreds of new genes—findings tha.....»»
Microbial comics: RNA as a common language, presented in extracellular speech-bubbles
Single-celled organisms, such as bacteria and archaea, have developed many ways to communicate with each other. For example, they might use tiny so-called extracellular vesicles (EVs)—membrane-enveloped packages smaller than 200 nm in diameter (0.0.....»»
Scientists develop technology to reduce pathogens in intact eggs
The CDC estimates Salmonella bacteria causes about 1.35 million infections, 26,500 hospitalizations, and 420 deaths in the United States every year. Despite their appearance in everyday meals and snacks, the truth is that raw eggs and egg products ca.....»»