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Bacterial in Biological News

Stress signals link pre-existing sickness with susceptibility to bacterial infection

Mitochondrial diseases disrupt the power generating machinery within cells and increase a person's susceptibility to bacterial infection, particularly in the lungs or respiratory tract. A new study published in Disease Models & Mechanisms (DMM), shows that infection with the pneumonia causing ba...

Researchers capture bacterial infection on film

Researchers have developed a new technique that allows them to make a movie of bacteria infecting their living host. Whilst most studies of bacterial infection are done after the death of the infected organism, this system developed by scientists at the University of Bath and University of Exet...

Forsyth scientists suggest linkages between obesity and oral bacterial infection

A scientific team from The Forsyth Institute has discovered new links between certain oral bacteria and obesity. In a recent study, the researchers demonstrated that the salivary bacterial composition of overweight women differs from non-overweight women. This preliminary work may provide clues to...

Finding the constant in bacterial communication

DURHAM, N.C. The Rosetta Stone of bacterial communication may have been found. Although they have no sensory organs, bacteria can get a good idea about what's going on in their neighborhood and communicate with each other, mainly by secreting and taking in chemicals from their surrounding envi...

Vitamin D insufficiency linked to bacterial vaginosis in pregnant women

Bacterial vaginosis (BV) is the most common vaginal infection in US women of childbearing age, and is common in pregnant women. BV occurs when the normal balance of bacteria in the vagina is disrupted and replaced by an overgrowth of certain bacteria. Because having BV puts a woman at increased ri...

Breakthrough in the treatment of bacterial meningitis

It can take just hours after the symptoms appear for someone to die from bacterial meningitis. Now, after years of research, experts at The University of Nottingham have finally discovered how the deadly meningococcal bacteria is able to break through the body's natural defence mechanism and attac...

Details of bacterial 'injection' system revealed

UPTON, NY New details of the composition and structure of a needlelike protein complex on the surface of certain bacteria may help scientists develop new strategies to thwart infection. The research, conducted in part at the U.S. Department of Energy's Brookhaven National Laboratory, will be publ...

Researchers examine bacterial rice diseases, search for genetic solutions

AMES, Iowa -- As a major food source for much of the world, rice is one of the most important plants on earth. Keeping it safe from disease has become, in part, the task of a group of three researchers from Iowa State University and one from Kansas State University. The researchers are looki...

Bad mix of bacterial remnants and genetics leads to arthritis

Here's another reason to hate leftovers. A research study appearing in the April 2009 issue of the Journal of Leukocyte Biology ( http://www.jleukbio.org ) sheds light on one cause of arthritis: bacteria. In the study, scientists from the United States and The Netherlands show that a specific ge...

Evolutionary origin of bacterial chromosomes revealed

Blacksburg, Va. Researchers have unveiled the evolutionary origin of the different chromosomal architectures found in three species of Agrobacterium. A comprehensive comparison of the Agrobacterium sequence information with the genome sequences of other bacteria suggests a general model for how s...

NYU scientists discover dangerous new method for bacterial toxin transfer

NEW YORK, Jan. 6, 2009 Scientists have discovered a new way for bacteria to transfer toxic genes to unrelated bacterial species, a finding that raises the unsettling possibility that bacterial swapping of toxins and other disease-aiding factors may be more common than previously imagined. In a ...

New research lights up chronic bacterial infection inside bone

December 22, 2008, Cambridge, UK A new report demonstrates how a sensitive imaging technique gives scientists the upper hand in seeking out bacteria in chronic infections. Listeria monocytogenes is a type of pathogenic bacteria that can cause severe illness and death. Listeria outbreaks rece...

Computation and genomics data drive bacterial research into new golden age

A potent combination of powerful new analysis methods and abundant data from genomics projects is carrying microbiology forward into a new era. Bacteria in particular are shedding light on fundamental molecular and signalling processes of interest not just within microbiology, but across the whole...

Winter brings flu, summer brings bacterial infections

CORVALLIS, Ore. In the same way that winter is commonly known to be the "flu season," a new study suggests that the dog days of summer may well be the "bacterial infection" season. Researchers have discovered that serious infections caused by gram-negative bacteria can go up as much as 17 perc...

Scientists build 'roach motel' for nasty bugs of the bacterial variety

GAINESVILLE, Fla. The vacancy sign is on, but the lowlifes who check in never check out. Scientists at the University of Florida and the University of New Mexico have created tiny microscopic spheres that trap and kill harmful bacteria in a manner the scientists liken to "roach motels" snaring...

Scientists present 'moving' theory behind bacterial decision-making

Biochemists at North Carolina State University have answered a fundamental question of how important bacterial proteins make life-and-death decisions that allow them to function, a finding that could provide a new target for drugs to disrupt bacterial decision-making processes and related diseases...

Caltech researchers get first 3-D glimpse of bacterial cell-wall architecture

PASADENA, Calif.--The bacterial cell wall that is the target of potent antibiotics such as penicillin is actually made up of a thin single layer of carbohydrate chains, linked together by peptides, which wrap around the bacterium like a belt around a person, according to research conducted by scie...

Shifts in soil bacterial populations linked to wetland restoration success

DURHAM, N.C. -- A new study led by Duke University researchers finds that restoring degraded wetlands -- especially those that had been converted into farm fields -- actually decreases their soil bacterial diversity. But that's a good thing, say the study's authors, because it marks a return t...

Nature study demonstrates that bacterial clotting depends on clustering

Bacteria can directly cause human blood and plasma to clota process that was previously thought to have been lost during the course of vertebrate evolution, according to new research at the University of Chicago, National Institute of Allergy and Infectious Diseases, and Institut Pasteur in Pari...

Predatory bacterial swarm uses rippling motion to reach prey

Oct. 29, 2008 Like something from a horror movie, the swarm of bacteria ripples purposefully toward their prey, devours it and moves on. Researchers at the University of Iowa are studying this behavior in Myxococcus xanthus (M. xanthus) , a bacterium commonly found in soil, which preys on o...

Gene against bacterial attack unravelled

Humans have an innate defence system against deadly bacteria. However, how the step from gene to anti-bacterial effect occurs in the body is not yet known. To date, B. Pseudomallei, a bacterium suitable for bioweapons, had managed to elude medics. It can remain hidden in the human body for many ...

Study reveals how viruses collectively decide the fate of a bacterial cell

A new study suggests that bacteria-infecting viruses called phages can make collective decisions about whether to kill host cells immediately after infection or enter a latent state to remain within the host cell. The research, published in the September 15 issue of the Biophysical Journal, ...

New paper sheds light on bacterial cell wall recycling

A new paper by a team of researchers led by Shahriar Mobashery, Navari Family Professor of Life Sciences at the University of Notre Dame, provides important new insights into the process by which bacteria recycle their cell wall. The cell wall is a critically important entity for bacteria and ...

A survivor in Greenland: A novel bacterial species is found trapped in 120,000-year-old ice

A team of Penn State scientists has discovered a new ultra-small species of bacteria that has survived for more than 120,000 years within the ice of a Greenland glacier at a depth of nearly two miles. The microorganism's ability to persist in this low-temperature, high-pressure, reduced-oxygen, a...

Tomato pathogen genome may offer clues about bacterial evolution

Blacksburg, Va.. The availability of new genome sequencing technology has prompted a Virginia Tech plant scientist to test an intriguing hypothesis about how agricultures early beginnings may have impacted the evolution of plant pathogens. Boris Vinatzer, assistant professor of plant pathology...

Biologists surprised to find parochial bacterial viruses

HOUSTON, March 4, 2008 Biologists examining ecosystems similar to those that existed on Earth more than 3 billion years ago have made a surprising discovery: Viruses that infect bacteria are sometimes parochial and unrelated to their counterparts in other regions of the globe. The finding, pub...

Biochemists reveal details of mysterious bacterial microcompartments

UCLA biochemists and colleagues have answered an important question about the structure of microcompartments the mysterious molecular machines that seem to be present in a wide variety of pathogens and other bacteria. In the Feb. 22 issue of the journal Science, the biochemists report how ...

Tomato pathogen genome may offer clues about bacterial evolution at dawn of agriculture

Blacksburg, Va. The availability of new genome sequencing technology has prompted a Virginia Tech plant scientist to test an intriguing hypothesis about how agricultures early beginnings may have impacted the evolution of plant pathogens. Boris Vinatzer, assistant professor of plant pathology,...

New drug targets may fight tuberculosis and other bacterial infections in novel way

NEW YORK (Dec. 27, 2007) -- Over the course of the 20th Century, doctors waged war against infectious bacterial illness with the best new weapon they had: antibiotics. But the emergence of dangerous, multi-drug resistant strains of tuberculosis and other killer infections means that in the 21s...

Small RNA plays parallel roles in bacterial metabolism

They are often overlooked, and were once thought to be too small to contribute much to major cellular processes, but in recent years the study of small ribonucleic acids (sRNA) has gained momentum. Now a team from the University of Illinois has identified the unique metabolic activities of one of ...

Scripps research team blocks bacterial communication system to prevent deadly staph infections

LA JOLLA, CALIFORNIA, OCT. 30, 2007 -- In hopes of combating the growing scourge of antibiotic-resistant bacteria, in particular drug-resistant staph bacteria, a team of scientists from the Scripps Research Institute has designed a new type of vaccine that could one day be used in humans to block ...

Legionnaire's bacterial proteins work together to survive

New Haven, Conn.Proteins within the bacteria that cause Legionnaires disease can kidnap their own molecular coffin and carry it to a safe place within the cell, ensuring their survival, Yale School of Medicine researchers report in Nature Wednesday. This supposedly simple organism continues to...

Researchers discover 'acquired' DNA key to certain bacterial infection

Researchers announced this week the discovery of a mechanism by which Mycobacterium avium – a bacterium which can result in serious lung infections and is prevalent in emphysema and AIDS patients among others – infects tissue cells or “macrophages” and thus compromises the body’s immunity. Resul...

Researchers develop way to calculate speed of bacterial sex

Scientists from the University of California-Davis recently developed a mathematical model of the rate of gene transfer among bacteria in the environment. Researchers believe this new model improves upon existing models by taking into account characteristics of the natural subsurface environments, ...

Drug-resistant bacterial infections serious complication after corrective eye surgery

Drug-resistant bacteria can complicate treatment after many surgical procedures. In particular, Methicillin-resistant Staphylococcus aureus (MRSA), which has been found in many healthcare settings, can be a serious post-operative complication. In a study published in the April issue of the American...

Penn study on lung-infecting bacterial enzyme suggests new approach to cystic fibrosis treatment

Researchers at the University of Pennsylvania School of Medicine have discovered that an enzyme produced by lung-infecting bacteria further shuts down a protein that is defective in cystic fibrosis patients. The disruption to this protein that conveys ions from lung cells to airways causes thick mu...

Solution to bacterial mystery promises new drugs

A 25-year quest to identify the first biochemical step that many disease-causing bacteria use to build their membranes has led to a discovery that holds promise for effective, new antibiotics against these bacteria, according to investigators at St. Jude Children's Research Hospital. The finding is...

MRSA toxin acquitted: Study clears suspected key to severe bacterial illness

Researchers who thought they had identified the bacterial perpetrator of the often severe disease caused by community-associated methicillin-resistant Staphylococcus aureus (CA-MRSA) had better keep looking: Scientists at the National Institute of Allergy and Infectious Diseases (NIAID), part of th...

Researchers identify new weapon to fight deadly bacterial sepsis

One of the most dangerous risks of contracting a serious bacterial infection is that the victim may develop sepsis--an overreaction by the immune system causing destructive inflammation throughout the body, often leading to heart and other organ failure and death. Even the best hospital intensive c...

'Conversation stoppers' fight deadly bacterial infections

The study, which was directed by Scripps Research Professor Benjamin Cravatt, Ph.D., is being published in the September 8 issue of The Journal of Biological Chemistry. The new study describes a pathway-different than the one previously suggested-for the biosynthesis of neurotransmitter lipids, N...
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