Articles tagged with Bacterial Pathogens
The TB bacterium has a unique molecule on its outer surface that blocks the production of tumor necrosis factor (TNF), a key protein in the body's immune response. This allows the bacterium to remain infectious and evade the host's defense.
Researchers at Arizona State University are developing strategies to diagnose and prevent two of the most pervasive food-borne microbes, focusing on extraintestinal pathogenic E. coli (ExPEC) and noroviruses. The new initiatives aim to improve food safety and reduce human illnesses, particularly among vulnerable populations.
Dr. Douglas A. Mitchell, an Illinois professor, has been awarded the $1.5 million NIH Director's New Innovator Award to develop a generalized toxin-disabling strategy against bacterial pathogens. His approach aims to create drugs that combat pathogenic microbes without promoting antibiotic resistance.
The Legume Integrated Pest Management Pest Information Platform for Extension and Education (ipmPIPE) provides a new option for generating, summarizing, and disseminating real-time pest data. It identifies priority pathogens and insect pests for monitoring and offers management and education tools.
Scientists have devised a way to measure the impact of age on bacterial growth rates, allowing for new understanding and modeling of bacterial populations. This development could provide new insights into how genetic factors affect their life cycle and potentially lead to alternative methods to curb bacterial growth.
A study published in the American Journal of Infection Control found that over 60% of hospital nurses' and doctors' uniforms tested positive for potentially dangerous bacteria. The study, led by Yonit Wiener-Well, MD, revealed a prevalence of antibiotic-resistant strains in close proximity to hospitalized patients.
Researchers have devised a novel strategy for developing rapid, inexpensive diagnostic tests for microbial infections by identifying soluble microbial antigens. The InMAD system successfully identified antigens for biothreats Burkholderia pseudomallei and Francisella tularensis.
A Johns Hopkins Children's Center study of over 3,000 hospitalized children reveals that those colonized with MRSA but not sick are at significant risk for developing full-blown infections. The study found nearly six times more likelihood of invasive MRSA infections among carriers compared to noncarriers.
A Stanford team cataloged the bacterial genome's essential elements, revealing 12% crucial for survival. The researchers used an efficient new method to map the genome and identify 480 protein-coding genes, 402 promoter regions, and 130 non-coding segments of unknown function.
Scientists identify genetic differences between mild and deadly Plague bacteria, revealing the role of small non-coding RNAs in disease severity. The study provides new insights into the evolution of pathogens and potential therapeutic targets for deadly diseases like the Plague.
Researchers found that coriander oil damages bacterial cell membranes, inhibiting essential processes and ultimately killing bacteria. The study suggests using coriander oil as a natural alternative to common antibiotics for treating food-borne illnesses and multidrug-resistant infections.
Researchers have identified a modification on EF-P protein that boosts bacterial strength and contributes to Salmonella's virulence. The discovery opens doors for new treatments against this foodborne pathogen, which causes severe illnesses and fatalities.
A natural defense mechanism has been uncovered that inactivates the toxin spreading C. diff by binding to it with S-nitrosoglutathione (GSNO), a NO-based molecule. This finding provides a basis for developing new therapies targeting toxins directly.
A research team has identified human sewage as the source of the coral-killing pathogen that causes white pox disease in Caribbean elkhorn coral. The bacterium, Serratia marcescens, is also a pathogen of humans, causing respiratory and urinary tract infections.
A new computational model realistically simulates ion channel function, providing insight into bacterial channels that cause deadly infections and informing potential drug design against them. The study focuses on PorB, a channel formed by Neisseria meningitidis, which is linked to antibiotic resistance.
Researchers found diverse bacterial communities in infant saliva associated with early childhood caries, supporting the need for proper oral hygiene practices and dietary habits from birth. The study identifies minimizing fermentable sugars and wiping gums without teeth as crucial preventive measures.
A study by Purdue University researchers found that E. coli and Salmonella can survive inside plant tissues, rendering exterior sanitization ineffective. The pathogens were detected in every major tissue of the plants, including those transporting nutrients. Cooking foods to known temperatures eliminates these bacteria from inner tissues.
UC Riverside researcher Joao Pedra to investigate immune system response to rickettsial infections, potentially leading to novel therapeutics against devastating tick-borne diseases.
Researchers have discovered that Candida albicans produces two distinct types of biofilms: a traditional pathogenic one and a second sexual type. The majority of cells forming these biofilms are sexually incompetent, but a minority are sexually competent and form highly permeable biofilms.
A team of researchers led by Dr. David Rasko analyzed the genomic data of the German E. coli outbreak strain, revealing it was a unique combination of enteroaggregative and enterohemorrhagic E. coli subtypes. The analysis provided critical information for treating infected patients and tracing the source of the pathogen.
Researchers have found a new target for nitric oxide's antimicrobial actions, which disrupts Salmonella's metabolism and prevents its growth. The discovery sheds light on the body's natural defenses against infection and may lead to the development of new broad-spectrum antimicrobials.
Bacteria Pseudomonas aeruginosa employs a unique secretion system to break down its opponents' cell walls, causing their breakdown. The bacteria protects itself from this attack by using immunity proteins that counteract the effects of toxic proteins it secretes.
Researchers discovered a novel mechanism used by bacteria Paenibacillus dendritiformis to cope with overcrowding. A new insect-borne virus, Cavally virus, was also found in mosquitoes in Cote d'Ivoire, which may cause severe disease in humans or animals.
Researchers at Duke University Medical Center have developed a molecule that blocks the damaging actions of Chlamydia by disarming its self-defense mechanisms. The therapy will disarm CPAF, a central weapon of Chlamydia, allowing the body to take care of the rest and ultimately lead to the death of the infected cell and the bacteria.
Bacteria Pseudomonas aeruginosa uses a toxin delivery system called Type VI secretion system (T6SS) to break down rival bacteria's protective barriers. The mechanism also helps the bacterium protect itself from its own toxins, making it a major public health concern.
Bacteria utilize type IV pili, or TFP, to achieve twitching motility, enabling them to 'slingshot' on surfaces with high efficiency. This unique ability helps the bacteria navigate complex surface conditions and move through polysaccharide-rich environments with ease.
Researchers discovered a new enzyme called SidD used by Legionella pneumophila to control its host cell and replicate. This finding provides insight into bacterial infection mechanisms and could lead to the design of a new therapy to save lives.
A recent study found that antimicrobial copper surfaces can reduce the risk of hospital infections by more than 40% in intensive care unit (ICU) settings. The study, conducted at three US hospitals, showed a 97% reduction in surface pathogens and a statistically significant decrease in patient infections.
Researchers at Arizona State University have developed a technique to make salmonella-based vaccines safer and more effective, with potential applications in fighting diseases like hepatitis B, tuberculosis, and pneumonia. The new approach retains strong immunogenic properties while reducing unwanted side effects.
A new study reveals that Bdellovibrio can reduce Salmonella bacteria by 90% without harming birds. The research confirms the safety and effectiveness of this natural predator as a potential alternative to antibiotics.
Marine biologists have identified a 500-million-year-old symbiotic relationship between catenulid flatworms, like Paracatenula, and Alpha-Proteobacteria. The unique Riegeria symbionts have been found to account for up to 50% of the worm's tissue and are believed to be responsible for its nutrition.
A new research area seeks to discover ways to manage the evolution of drug-resistant disease organisms and slow their spread. The goal is to develop a science-based model for drug-resistance management that can inform treatment guidelines for various diseases, including malaria, MRSA, AIDS, and cancer.
A recent Penn study discovered that microbes open and pass through the initial cellular barrier in a programmed and efficient way, suggesting a normal physiological event. This finding supports a general mechanism for epithelial opening exploited by invasive pathogens.
Researchers have uncovered a crucial survival response in the body's immune system to deadly anthrax infections. The study found that a key signaling molecule ATP is released from infected macrophages to alert other immune cells, triggering a complex pathway to combat the bacteria.
A recent study found that E. coli bacteria are more likely to develop resistance to antibiotics when exposed to low levels of these medications, rather than high concentrations. This finding challenges previous assumptions about the safety of using antibiotics in food animals and highlights the growing threat of antibiotic resistance.
The team is studying 14 locations along the Passaic River to determine the effect of combined sewer overflows on water quality. They are also analyzing samples for bacteria in dry and wet weather events to understand pollution patterns.
A study by the University of Southampton reveals copper's antimicrobial property, killing 10 million E. coli bacteria within 10 minutes on dry surfaces and 45 minutes on wet ones. Copper deployed as a touch surface in food preparation areas can reduce cross-contamination risk.
Bacteria can evade the immune system by mimicking human proteins, allowing them to resist antibiotics. This 'molecular mimicry' helps explain the resurgence of highly infectious pathogens.
A study published in the American Journal of Infection Control found that patient cell phones were more likely to contain potentially dangerous bacteria than those of healthcare workers. The researchers also discovered seven patient phones with multidrug-resistant pathogens, highlighting a potential risk for nosocomial infections.
A case report reveals NDM-1 enzyme was acquired by a Canadian resident without travel history, highlighting local transmission risk. Enhanced precautions, including isolation and screening procedures, are necessary to contain the outbreak.
Researchers have discovered a high concentration of bacteria in the center of hailstones, indicating that airborne microorganisms may play a role in weather events. The study suggests that biological particles, such as bacteria, can act as ice nuclei, catalyzing ice formation at temperatures near -2 degrees Celsius.
Researchers discovered a protein isolated from beneficial bacteria, called p40, that supports intestinal epithelial cell growth and function, reducing inflammatory responses. Oral consumption of p40 prevented and treated colitis in animal models, providing a potential new therapeutic option for IBD.
Researchers found that the rate of hand contamination among graduating students is 100 times lower than health workers caring for patients with MRSA, likely due to a lower prevalence of MRSA in graduates. Handshakes may remove pathogens acquired earlier, providing reassurance to individuals who shake hands regularly.
Researchers at UAB discover that Salmonella enterica uses Fur protein to modulate gene expression based on iron levels, adapting to each stage of the infection process. This control allows the bacterium to invade the epithelium and then avoid unnecessary energy expenditure.
Researchers discover gamma deltaintraepithelial lymphocytes (γδ IEL) play a crucial role in maintaining friendly relations between gut microbes and intestinal lining. These cells patrol intestinal borders, sensing microbial invasion and producing antibiotic proteins to prevent rogue bacteria from spreading to deeper tissue.
Researchers at Vanderbilt University are investigating whether bacterial hitchhikers play a role in promoting or inhibiting the formation of new species. They are analyzing the microbiomes of closely related wasp species and hybrids to identify specific microbes that increase mortality rates in hybrid offspring.
Scientists deciphered a community of soil microbes that enables a patch of soil to suppress a plant-killing pathogen. The researchers found 17 unique types of bacteria working together to reduce the incidence of fungal infection.
Research found that washing with contaminated liquid soap increases Gram-negative bacteria on hands 26-fold, and bacteria from contaminated hands can be transferred to secondary surfaces. This study highlights the importance of using sealed-soap dispensers in community settings.
Researchers have discovered a novel strategy by which antibiotic-resistant bacteria change their genetic make-up to evade multiple antibiotics. The study provides a clear chemical picture of a clever mechanism for antibiotic resistance that some bacteria have evolved, enabling the design of new compounds to combat superbugs.
Researchers have developed a low-cost sensor that can identify infectious bacteria by smell, offering a faster diagnosis than traditional methods. The sensor uses a printed pigment array to detect unique chemical signatures from each bacterium, identifying specific species and strains in just a few hours.
A nationwide study found that group B streptococci are the leading cause of early-onset sepsis in full-term infants, while Escherichia coli is a common pathogen in preterm infants. The study also highlights missed opportunities for prevention due to inadequate screening and electronic medical record linking.
Researchers discovered a strategy for disrupting bacteria's ability to communicate and coordinate virulence factor expression through compounds that bound to LuxR type receptors, rendering them inactive. This finding may lead to the development of new antibacterial therapeutics aimed at inhibiting bacterial communication.
A new procedure devised by USDA scientists increases PCR-based method sensitivity for detecting plant disease organisms, improving diagnostic accuracy and reducing economic harm from asymptomatic seed contamination. The technique, called Bio-PCR, enhances detection rates by 100- to 1,000-fold over conventional methods.
Researchers found that beneficial gut bacteria like Bacteroides fragilis hijack immune cells to prevent inflammation. The bacteria produce a molecule that tricks the immune system into activating regulatory T cells, preventing autoimmune reactions.
The study classifies gut microbiota into three distinct groups: Bacteroides, Prevotella, and Ruminococcus. This classification is associated with variations in nutrient uptake and medicine efficiency. The research also reveals connections between the gut type and BMI, obesity, and vitamin production.
A team of researchers at the University of Guelph has developed a potential vaccine against Helicobacter pylori, a common bacterium linked to stomach cancer. The sugar-based antigen caused mice to develop antibodies against the bacteria.
Biochemist Yingfu Li and his research team have developed a universal test that can quickly identify any bacteria, reducing the time for detection from days to hours. This breakthrough could help safeguard the health of Canadians and supply industry with a reliable means to bring safe food products to consumers.
Research suggests that combining standard vaccines with interleukin-12 (IL-12) can induce high levels of protection against respiratory pathogens, including influenza virus and pneumococcal bacteria. This method could provide a non-invasive alternative to injections, offering improved protection against flu and other diseases.
Scientists discover that bacteria in wasp antennae produce a cocktail of antibiotics to protect against fungal threats, a strategy similar to human combination therapy. This finding has potential clinical benefits and may yield novel antimicrobial compounds useful for human medicine.
The study found NDM-1-positive bacteria in drinking-water samples and seepage samples from urban New Delhi, highlighting the need for global action to limit the worldwide spread of NDM-1 producing bacteria. The gene was also detected in pathogenic species like Shigella boydii and Vibrio cholerae.