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Latest Proteobacteria Stories

3d6882661d99b366b9249f9c4544ebac
2009-11-05 09:28:45

Research team uncovers how the bacterium that causes ulcers travels through the sticky gels of stomach mucus Mucus is more than gross--it's a critical barrier against disease, trapping many of the germs that want to invade your body. A wet mesh of proteins, antiseptic enzymes and salts, mucus is what keeps all but a few microbes from wreaking havoc on many of our most exposed tissues. Helicobacter pylori is one of the few. The tiny, corkscrew-shaped microbe bores through the mucus that lines...

2009-10-26 22:50:42

Helicobater pylori, a bacteria implicated in peptic ulcers and gastritis, was eradicated in 95 percent patients who took a 7-day course of combination therapy with levofloxacin, omeprazole, nitazoxanide (Alinia®) and doxycycline (LOAD) compared to eradication in only 80.9 percent of patients on lansoprazole, amoxicillin and clarithromycin (LAC) for seven days. Results of a new study presented at the Annual Scientific Meeting of the American College of Gastroenterology reveal...

2009-10-22 14:41:00

Immunologists at the University of Pittsburgh School of Medicine and Children's Hospital of Pittsburgh of UPMC and the have found a unique quirk in the way the immune system fends off bacteria called Francisella tularensis, which could lead to vaccines that are better able to prevent tularemia infection of the lungs. Their findings were published today in the early, online version of Immunity. F. tularensis is an intracellular pathogen that infects cells in the lungs called macrophages,...

2009-10-16 10:33:28

Helicobacter pylori (H pylori) is a gram negative bacterium which infects about 50% of the world population. H pylori colonization causes a strong systemic immune response. Various tools have been employed to identify the relationship between H pylori and gastric cancer, including c-DNA microarrays. However, most of these methods did not consider the systematic interaction of biological components. A research team from South Korea studied the complex reaction of gastric inflammation induced...

2009-10-13 10:23:54

A special protein in the lining of the stomach has been shown to be an important part of the body's defense against the stomach ulcer bacterium Helicobacter pylori in a new study from the Sahlgrenska Academy. The discovery may explain why the bacterium makes some people more ill than others. The study was conducted in collaboration with researchers at universities in Brisbane and Melbourne and has been published in the scientific journal Public Library of Science Pathogens. "Half of all...

2009-10-05 13:10:13

Spanish scientists say they've identified substances that can block a chemical pathway needed by bacteria that cause stomach ulcers and other diseases. Professor Javier Sancho and colleagues at Zaragoza University said they knew from past research that blocking flavodoxin, a key protein needed by Helicobacter pylori bacteria for survival, could be the key to developing antibiotics specifically targeting the gastritis- and ulcer-causing bacteria. Sancho's team screened 10,000 chemicals for...

2009-10-05 01:30:00

LAUSANNE, Switzerland, October 5 /PRNewswire/ -- Debiopharm Group (Debiopharm), a Swiss-based global biopharmaceutical group of companies with a focus on the development of prescription drugs that target unmet medical needs, and the Japanese Cancer Association (JCA) presented 'The JCA-Mauvernay Award' to Dr Toshikazu Ushijima from the National Cancer Center Research Institute in Tokyo, for his outstanding and innovative research in basic science in the "epigenetic field for...

2009-10-01 08:23:17

Scientists are reporting discovery of a much sought after crack in the armor of a common microbe that infects the stomachs of one-sixth of the world's population, causing stomach ulcers and other diseases. They identified a group of substances that block a key chemical pathway that the bacteria need for survival. Their study, which could lead to new, more effective antibiotics to fight these hard-to-treat microbes, is scheduled for the October 16 issue of ACS Chemical Biology, a monthly...

2009-09-07 08:09:02

By adapting a single protein on the surface of the bacterium Caulobacter crescentus, researchers at the University of British Columbia have turned it into a protein production factory, making useful proteins that can act as vaccines and drugs. Dr. John Smit presented the findings at the Society for General Microbiology's meeting at Heriot-Watt University, Edinburgh, today (7 September). C. crescentus is a harmless bacterium that has a single protein layer on its surface. Dr Smit's team...

2009-08-30 23:47:36

U.S. researchers, in studies involving mice, link a diarrhea-causing bacteria to a type of colon cancer. Study leader Dr. Cynthia Sears of The John Hopkins University School of Medicine says strains of this common bacteria -- Bacteroides fragilis -- sometimes trick immune system cells into allowing colon tissue to be continuously inflamed and may set the stage for malignancy. This could be the H. pylori of colon cancer, Sears says in a statement. H.pylori is a bacteria known to cause stomach...


Latest Proteobacteria Reference Libraries

0_0d5d532211b8a47882b168c09689c84f
2011-04-25 21:28:48

Salmonella enterica is a subspecies of Salmonella enterica, the rod shaped, flagellated, aerobic, Gram-negative bacterium. It is a member of the genus Salmonella and many of the pathogenic serovars of the S. enterica species are in this subspecies. Serovars can be designated fully or in a shortened form. The genus, Salmonella, is on the short form lists which are followed by the capitalized and non-italicized serovar. Each serovar can have many strains as well, which allows for a rapid...

72_d0e074525de5bb741daf382f8d62213f
2011-04-25 16:38:12

Neisseria meningitidis is a heterotrophic gram-negative diplococcal bacterium best known for its role in meningitis and other forms of meningococcal disease such as meningococcemia. It is a major cause of morbidity and mortality during childhood in industrialized countries and is responsible for epidemics in Africa and in Asia. In the US there are approximately 2500 to 3500 cases of N. meningitides infections. Children under 5 are at a higher risk as well as people in the sub-Saharan...

45_d6be6f801c571ef90f6e4b56412c5274
2011-04-15 15:38:47

Helicobacter pylori is a Gram-negative, microaerophilic bacterium that can inhabit various areas of the stomach, particularly the antrum. It causes low-level inflammation of the stomach lining and is linked to gastric ulcers and stomach cancer. Out of those infected, 80%, are asymptomatic. It was initially named Campyloacter pyloridis and then renamed C. pylori to correct the Latin grammar error. It was later placed in the genus, Helicobacter. Over 50% of the population has H. pylori in...

72_63ad42c17b548b76aff6af345a402a04
2011-04-15 15:26:30

Haemophilus influenzae is a Gram-negative, rod-shaped bacterium first described in 1892 by Richard Pfeiffer during an influenza pandemic. It is generally aerobic but can grow as a facultative anaerobe. H. influenzae was mistakenly considered to be the cause of influenza until 1933 when the flu virology became apparent. It was the first free-living organism to have its entire genome sequenced. The project was completed and published in 1995. Two major categories were defined: the...

72_d98ab0249709d892687c999e0e599da3
2011-04-15 15:19:01

Haemophilus ducreyi is a fastidious gram-negative coccobacillus causing the sexually transmitted disease chancroid, a major cause of genital ulceration in developing countries characterized by painful sores on the genitalia. Early symptoms are dark and light green shears in excrement. Chancroid starts as an erythematous popular lesion that breaks down into a painful bleeding ulcer. It can be cultured on chocolate agar. It is an opportunistic microorganism that infects through the...

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Word of the Day
tessitura
  • The prevailing range of a vocal or instrumental part, within which most of the tones lie.
This word is Italian in origin and comes from the Latin 'textura,' web, structure.