Articles tagged with Bacterial Strains
Researchers discovered that soybean plants penalize rhizobia that don't fix nitrogen by decreasing oxygen supply, favoring cooperation and evolution of beneficial strains. This mechanism helps maintain ancient symbiotic relationships between legumes and soil bacteria.
Researchers have discovered a complex system of communication in bacteria, known as quorum sensing, which allows them to sense the size of their colony and produce toxins. This system has significant potential for rapid pathogen sensing and novel antibiotic strategies.
Antibiotic prescriptions decreased for common cold and respiratory infections, but broad-spectrum use increased, posing a threat to public health. The misuse of broad-spectrum antibiotics contributes to the creation of resistant bacteria strains.
A 2002 conjunctivitis outbreak at Dartmouth College revealed bacterial pinkeye caused by a strain of Streptococcus pneumoniae lacking protective capsule. Effective collaboration between doctors, health officials, and the CDC helped contain the outbreak through rapid communication and basic hygiene measures.
Researchers have successfully determined the structure of a biological clock protein called KaiC in blue-green algae, shedding light on internal clock mechanisms. The protein's ring-like hexagonal structure suggests it interacts directly with DNA, potentially regulating gene expression and controlling the wake-sleep cycle.
A study has identified specific combinations of H. pylori bacterial strain and host genetic variations that increase the risk of stomach cancer in infected individuals. These findings suggest that personalized genotyping can help identify high-risk individuals, who may benefit from targeted H. pylori eradication treatment.
Resistant strains of Staphylococcus aureus, also known as hospital staph, have become increasingly prevalent worldwide. Researchers have identified key differences in the structure of penicillin-binding protein 2A (PBP2a), which enables it to resist beta-lactam antibiotics.
The laser technique, called LIBS, can detect various explosives and identify close relatives of anthrax in instant detection. A portable LIBS system could continuously monitor air for signs of chemical or biological agents, alerting officials to potentially hazardous substances.
A new study published in the New England Journal of Medicine found that specific bacterial strains are associated with flare-ups of chronic lung disease. The researchers discovered that it is not the volume of bacteria, but rather the particular strain within a species, that contributes to exacerbations.
Scientists at The Wistar Institute identified key segments of an insect-derived antimicrobial peptide that kill bacteria and prevent mammalian cell entry. The research team confirmed the peptide's binding site on a bacterial protein target, opening up possibilities for novel antibiotic design and universal drug delivery.
Researchers identified unique genes in a virulent GAS strain that were imported from bacteriophages, contributing to its high infectivity. The study provides new insights into the evolution of bacterial virulence and potential targets for novel treatments.
Scientists have sequenced the whole genome of Bacillus anthracis, revealing areas of genetic variability between different isolates. The study suggests that a Florida anthrax strain is derived from the Ames strain and has not been genetically modified.
A new DNA-based technology detects bacteria in water and food in just one to three hours, outperforming current methods. The system uses unique 'fingerprints' from bacterial DNA sequences to identify strains, enabling accurate comparison and protection against terrorist contamination.
Researchers have identified genes unique to group A Streptococcus bacteria that cause acute rheumatic fever, a leading cause of childhood heart disease. The study also reveals that genetic material from different strains can be swapped, enabling the spread of the disease.
Researchers found that a specific strain of Staphylococcus aureus is linked to severe pneumonia in children, particularly those with influenza-like illness. The study highlights the need for vigilance in monitoring and treating these cases, as younger patients are at higher risk of death.
Biologists at Princeton University discovered a protein that initiates biofilm formation in E. coli bacteria, using a 'touch sensor' mechanism to sense solid surfaces. This finding suggests disrupting this sensing mechanism could be an effective strategy for developing new antibacterial agents targeting biofilms.
Infants and adults are susceptible to bacterial meningitis-induced CNS cell death, leading to severe neurological outcomes. Researchers investigated the underlying mechanisms of this devastating condition, shedding light on potential therapeutic targets for treatment and prevention.
Brookhaven National Laboratory scientists have developed strains of bacteria that can live in harsh environments and convert ordinary coal to a cleaner resource. These microbes remove sulfur and heavy-metal contaminants from coal, producing fewer environmentally undesirable by-products when burned or converted into fuel.
A team from Arizona State University has questioned the evidence for bacterial life in a Martian meteorite, citing limitations in microscope technology and data selection. The researchers argue that the shapes of magnetite crystals found in the meteorite are not uniquely identifiable with bacteria.
Researchers identified a toxin gene in Chlamydia trachomatis that causes blindness and debilitating genital tract infections. The discovery offers new avenues for treating or preventing these diseases.
Researchers found nearly a fourth of S. aureus genome is dispensable, allowing bacteria to adapt and spread through population. Contingency genes provide flexibility in causing diseases in humans, cows, and other organisms.
A team of scientists discovered a stable strain of bacteria living in a specific type of sea sponge, found along the Great Barrier Reef near Australia. The presence of this bacterium is linked to the health of the sponge and has potential as a model for finding new medicinal compounds.
Researchers have identified two Bifidobacterium strains that exhibit potent antimicrobial properties, protecting the intestinal tract from lethal infection with salmonella. These strains, CA1 and F9, decrease bacterial numbers, prevent entry into cells, and work in concert with gut lining enzymes to produce a barrier against infection.
Researchers have created a mutant strain of Mycobacterium tuberculosis that fails to establish a lethal chronic infection in mice. Targeting the pcaA gene, which codes for an enzyme essential for virulence, may lead to breakthroughs in TB treatment.
Researchers have identified a bacterial strain called T1 that can break down toluene, a hazardous industrial solvent. This discovery could lead to more cost-effective and environmentally friendly methods for cleaning up contaminated sites, reducing the need for expensive excavation and disposal methods.
A University of Florida researcher has developed a genetically altered bacteria strain, called an effector strain, that can permanently prevent tooth decay. The new strain, constructed from the naturally occurring bacterium Streptococcus mutans, breaks down food sugars and thrives on high-sugar diets.
A team of researchers has described a case of a patient who died from a bloodstream infection caused by a multidrug-resistant strain of Staphylococcus aureus. The study found that a combination of two commonly used antibiotics, oxacillin and vancomycin, was effective in killing the resistant bacteria.
A new study reveals that cattle fed grain may transmit dangerous strains of E. coli to humans, leading to food-borne illness. Feeding hay to cows for a short period before slaughter can reduce the risk of infection.