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Tag: "bacterium" at biology news

Dysentery uses 'sword and shield' to cause infection

Scientists have found that the bacterium that causes dysentery uses a 'sword and shield' ap...bacteria acts as a shield to protect the dysentery bacterium from being destroyed by the body's immune system. Dr Christoph Tang, from Imperial College London, ...

Learning to fight an adversary that won't stay down

...tant E. coli and Staphylococcus aureus (MRSA), the bacterium that causes methicillin-resistant tuberculosis, provide good examples of the challenges we face, says Dr. Davies. Ironically, he says, advances in molecular biology techniques have shown just how adept these pathogens are at adapting to anything we ...

Scientists find missing enzyme for tuberculosis iron scavenging pathway

...then (with iron bound to it) it is taken up by the bacterium again." Although Rv1347c is not involved in antib...because if mycobactin biosynthesis is stopped, the bacterium cannot acquire the iron that it needs for survival," explains Dr. Baker. "Importantly this seems to ...

Antibiotic Resistant Bacterium Uses Sonar-like Strategy to “See?Enemies or Prey

...Gilmore and his team have spent years studying the bacterium known asEnterococcus faecalis, one of the leading causes of hospital-acquiredinfections, to find new ways to treat them. These infections arefrequently resistant to many, and sometimes all, antibiotics. Tens ofthousands of deaths due to antibiotic re...

A bacterial genome reveals new targets to combat infectious disease

...h benefiting from the other. Indeed, the Wolbachia bacterium is so crucial to its host nematode that apparently...ry of possible significance is the presence in the bacterium of the synthetic pathway for heme - the oxygen-carrying iron component of hemoglobin. The nematode m...

First-ever Compounds To Target Only Metastatic Cells Are Highly Effective Against Breast, Prostate, And Colon Cancers

...hen Dr. Huang's team noticed that the Streptomyces bacterium -- the bug that gives us the antibiotic streptomycin -- also produces a natural compound called migrastatin, which appears to inhibit cell migration. Natural migrastatin's effect is relatively weak, but Dr. Huang suspected the molecule might be mani...

Discovery of key protein's shape could lead to improved bacterial pneumonia vaccine

...e lining of the throat and lungs. If apneumococcus bacterium is hovering on the lining of the respiratorytract,...ly and infect the body. S. pneumoniae is the only bacterium known to use CbpA to invade humancells by binding to pIgR, according to Richard W. Kriwacki, Ph.D.,a...

Study: Soap And Water Work Best In Ridding Hands Of Disease Viruses

...bacteriophage. Those are, respectively, a harmless bacterium and virus comparable to, and substituted for, disease-causing organisms. After that, scientists had the subjects clean their hands with various agents and measured how much of the bacteria and virus remained afterwards. Sixty-two adults volunteered ...

New comparative toxicogenomics database

...e lining of the throat and lungs. If apneumococcus bacterium is hovering on the lining of the respiratorytract,...ly and infect the body. S. pneumoniae is the only bacterium known to use CbpA to invade humancells by binding to pIgR, according to Richard W. Kriwacki, Ph.D.,a...

Highly adaptable genome in gut bacterium key to intestinal health

A bacterium that lives in the human gut adaptively shifts more... disorders such as diabetes and heart disease The bacterium of the study, called Bacteriodes thetaiotaomicron or B. theta, is among the most abundant species in...

Antibodies from plants protect against anthrax

...at encode the antibody itself were inserted into a bacterium that transfers the gene into the plant cells. "The...his collaborators. Plantibodies against the plague bacterium and botulism are also in development. ...

Scientists discover that host cell lipids facilitate bacterial movement

When the bacterium Listeria monocytogenes invades the body, it comman...e brain and spinal cord. Infection begins when the bacterium binds to a receptor on the surface of a cell, causing the cell to ingest it. The bacterium multiplie...

UF Researchers Map Bacterial Proteins That Cause Tooth Loss

...ists have identified the thousands of proteins the bacterium produces, shedding light on how it interacts with healthy cells in order to thrive, according to dental researchers from the University of Florida and the University of Washington. They describe their findings in the current issue of the journal Prot...

Sequencing of marine bacterium will help study of cell communication

... studying the newly sequenced genome of the marine bacterium V. fischeri, described this week in the Proceeding...te genome sequence of Vibrio fischeri: A symbiotic bacterium with pathogenic congeners," by E. G. Ruby, professor of medical microbiology and immunology at the U...

Multiple Campylobacter Genomes Sequenced

...is is usually caused by C. jejuni, a spiral-shaped bacterium normally found in cattle, swine, and birds, where it causes no problems. But the illness can also be caused by C. coli (also found in cattle, swine, and birds), C. upsaliensis (found in cats and dogs), and C. lari (present in seabirds in particular)....

Substance protects resilient staph bacteria

...sing new target in their fight against a dangerous bacterium that sickens people in hospitals, especially people who receive medical implants such as catheters, artificial joints and heart valves. A substance found on the surface of Staphylococcus epidermidis has, for the first time, been shown to protect the...

Fleshing out the genome

...tation method to a strain of the metal-detoxifying bacterium Shewanella oneidensis. "In a lot of cases," said James K. Fredrickson, a co-author and PNNL chief scientist, "it was not known from the gene sequence if a protein was even expressed. Now that we have high confidence that many of these hypothetical g...

Researchers identify protein crucial for survival of Lyme-disease bacterium

When the tick-borne bacterium that causes Lyme disease lacks a specific protein ...hat the protein, called BptA, is essential for the bacterium Borrelia burgdorfei (Bb) to survive in the gut of its tick host and may offer a potential new target...

New lab technique identifies high levels of pathogens in therapy pool

...nd sequenced bacteria to the "Mycobacterium avium" bacterium present in pool attendants ill with hypersensitivity pneumonitis, a lung condition that mimics pneumonia symptoms. The study was published in the March 14 issue of the Proceedings of the National Academy of Sciences. The paper was authored by Lars A...

Revolutionary nanotechnology illuminates brain cells at work

...e. "We used a protein called ybeJ from the common bacterium E. coli. We first predicted the structure of this protein, and then placed the two fluorophores at specific positions on the binding protein," commented co-author Loren Looger. "After fusion to the fluorescent proteins, we placed the sensor on the su...

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