Pathogenic in Biological News

The tiny difference in the genes of bacteria

... relationships. Furthermore, we can show how new pathogenic variants develop," says Manfred Hfle, researcher ... not all Vibrio cholerae strains are pathogenic to humans. Only those strains cause severe ... parahaemolyticus. It is a highly contagious pathogenic germ with only a dozen ingested bacteria causing ...

The tiny difference in the genes of bacteria

... relationships. Furthermore, we can show how new pathogenic variants develop," says Manfred Hfle, researcher ... not all Vibrio cholerae strains are pathogenic to humans. Only those strains cause severe ... parahaemolyticus. It is a highly contagious pathogenic germ with only a dozen ingested bacteria causing ...

Tips from the journals of the American Society for Microbiology

... issue of the Journal of Virology . Highly pathogenic avian influenza H5N1 viruses increasingly pose a ... since 2003. Much is still unknown about the pathogenic mechanisms of H5N1 influenza viruses, but prior ... against a reconstructed 1918 virus and the highly pathogenic avian H5N1 virus that was isolated from a fatal ...

The challenges of avian influenza virus: Mechanism, epidemiology and control

... 2009, eight human infection cases of H5N1 highly pathogenic avian influenza (HPAI) virus, with 5 death cases, ... than we know the answers. Influenza virus, as a pathogenic entity for chickens, has been known since the ... LIU and colleagues from CAS Key Laboratory of pathogenic Microbiology and Immunology review our current ...

Shades of 1918? New study compares avian flu with a notorious killer from the past

... The mortality rate for those stricken with highly pathogenic avian influenza (HPAI) H5N1 is 63 percent. ... those of a 2004 Vietnam isolate of the Highly pathogenic Avian Influenza (HPAI) H5N1. In a non-human ... reveal a similar trend. In both cases, the highly pathogenic strains replicate rapidly and induce a massive ...

New insights into a leading poultry disease and its risks to human health

... against a leading poultry disease called avian pathogenic E. coli (APEC). APEC is part of a large, diverse group of microbes called extra-intestinal pathogenic E. coli (ExPEC). They cause a number of complex ... order to gain the upper hand---or in the case of pathogenic E. coli , to outwit its competitors by ...

Farming and chemical warfare: A day in the life of an ant?

... to comb through the garden. When they find the pathogenic 'weeds', the ants pull them out and discard them ... properties between the bacteria and the pathogenic fungus. The bacteria appear to be specially suited to inhibiting the pathogenic fungi that infect the ants' fungus garden," said ...

Genetic evidence for avian influenza movement from Asia to North America via wild birds

... that has important implications for highly pathogenic avian influenza virus surveillance in North ... scientists observed that nearly half of the low pathogenic avian influenza viruses found in wild northern ... strains of avian influenza. It was a highly pathogenic form of the H5N1 avian influenza virus that ...

Bird flu vaccine protects people and pets

... fowl can protect birds and mice against highly pathogenic strains of influenza. They modified the virus to make it less pathogenic and then used it to vaccinate mice. Three weeks ... to protect mice against two different, highly pathogenic strains of influenza. We chose genes from H9N2 ...

Cross kingdom conflicts on a beetle's back

... mite has snuck in a supply of Ophiostoma minus, a pathogenic fungi that can wipe out the entire supply of ... often managed to avoid the adverse affects of pathogenic fungi often present in the tree. But the precise ... produced an antifungal agent that killed the pathogenic fungi snuck in by the trespassing mite. In ...

Large reservoir of mitochondrial DNA mutations identified in humans

... of people in the general population who carry pathogenic mitochondrial DNA mutations, but who are not ... a measurement of the number of these carriers of pathogenic mitochondrial DNA mutations in the general ... direct evidence for the widespread incidence of pathogenic mitochondrial DNA mutations in the human ...

New vaccine may give long-term defense against deadly bird flu and its variant forms

... development may provide protection against highly pathogenic bird flu and its evolving forms, according to ... needed to protect everyone at risk for highly pathogenic forms of bird flu. With the beginning of a ... a "perfect match" vaccine for the highly pathogenic bird flu. Other avian influenza viruses exist, ...

Yeast missing sex genes undergo unexpected sexual reproduction

... DURHAM, N.C. An emerging form of the pathogenic yeast Candida is able to complete a full sexual cycle in a test tube, ... likely to play a role in the evolution of drug resistance in this emerging pathogenic yeast species. " Yeast infections are notoriously hard to treat and ...

SRI International receives $100,000 Grand Challenges Explorations grant

... Based on those results, the project will be expanded to include other pathogenic bacteria that can lead to the development of the next generation of ... molecule metabolites that are essential for the growth and survival of pathogenic bacteria will be used as targets for antibiotic discovery. "Antibiotic ...

When intestinal bacteria go surfing

... is part of the healthy human intestinal flora. However, E. coli also has pathogenic relatives that trigger diarrhea illnesses: enterohemorrhagic E.coli ... today in the journal Cell Host & Microbe is a good example of how pathogenic bacteria develop progressively with their host. With the aid of bacterial ...

Long-sought protein structure may help reveal how 'gene switch' works

... can be used to develop new methods for preventing tuberculosis and other pathogenic bacterial diseases. "We know that many pathogenic bacteria use cAMP as a signal for activating genes that keep the microbes ...

Jefferson scientists discover a key protein regulator of inflammation and cell death

... that senses the presence of DNA in the cytoplasm, which is associated with pathogenic infection or the escape of undigested self-DNA into the cytoplasm," Dr. ... therapeutics may be useful for the treatment of nucleic aciddependent pathogenic and autoimmune diseases, such as arthritis and systemic lupus ...

NYU scientists discover dangerous new method for bacterial toxin transfer

... lab, however, the NYU researchers observed a phage-mediated transfer of pathogenic S. aureus genes to L. monocytogenes in raw milk. The unwitting selection ... in follow-up studies to determine whether other species could be hosts for pathogenic Staph aureus genes. In addition, they plan to follow the fate of an S. ...

Apolipoprotein(a): A natural regulator of inflammation

... for a variety of cardiovascular pathologies. Much of the focus of apo(a) pathogenic activities has centered on its strong resemblance to plasminogen, the ... mechanism independent of plasminogen. While the clinical studies point to pathogenic functions of apo(a), a physiological role of Lp(a) has been elusive, but ...

New technique is quantum leap forward in understanding proteins

... and block newly identified protein interactions vital to the survival of pathogenic bacteria. In the longer term, as the collective body of genomics data for ... That means interruption of strategic direct interactions can kill pathogenic bacteria. Though many direct interactions in the system had been ...

The medium is the message: Manipulating salmonella in spaceflight curtails infectiousness

... expression and virulence are profoundly altered by microgravity, with the pathogenic cells undergoing a significant increase in their infectious disease ... mechanical forces like fluid shear and genetic regulation of pathogenic virulencecombine and interact during the infection process? While the ...

Winter brings flu, summer brings bacterial infections

... which have a slightly different cell structure and are the source of fewer pathogenic infections in humans. "Bacterial infections in general have been rising ... of the link between the physical environment and the incidences of pathogenic infection could aid in infection prevention interventions or the selection ...

Scripps research scientists identify blood component that turns bacteria virulent

... to become virulent. This finding also is significant because other pathogenic bacteria such as Streptococcus pyogenes, Escherichia coli, Borrelia ... and transport should be of much greater significance to a large number of pathogenic organisms," Perego said. ...

New antibiotic candidates from Braunschweig

... Research (HZI) in Braunschweig points out a new mode of action against pathogenic bacteria. Isolated from myxobacteria, the substances prevent an enzym of ... and discovered in detail how these compounds interact with the target in pathogenic bacteria. The novel target is different from the target of known ...

Tracking down the cause of mad cow disease

... influence on the transformation of the normal form of the protein into its pathogenic form, which causes scrapie and mad cow disease. A team headed by Christian ... influence of membrane association on conversion of the protein into the pathogenic scrapie form. This should finally make it possible to track down the ...

ETH Zurich study on salmonella self-destruction

... The biologists investigated this unusual biological concept using the pathogenic salmo-nella bacteria as an example. Diseases caused by salmonellae are ... on one another. The self-sacrifice of phenotypes may be quite common among pathogenic bacteria, for example, among the pathogens causing diarrhoea after ...

Test of bacteria toxin delivery system could pave way for new antibiotic drugs

... achieved a breakthrough in monitoring the toxin-delivery system of highly pathogenic bacteria an accomplishment that could help pave the way for new drugs ... Most bacteria are harmless and do not cause infections. Some, however, are pathogenic and are equipped with special accessories that are used to deliver toxins ...

Scientists discover why plague is so lethal

... is present in almost all bacteria but it is curiously absent in many pathogenic types. These include mycobacteria that are pathogenic to man, Francisella tularensis and rickettsiae (both of which cause ...

UIC scientists discover how some bacteria survive antibiotics

... variety of infections. "When patients are treated with antibiotics some pathogenic microbes can turn on the genes that protect them from the action of the ... known," she said. "There may be other antibiotics and resistance genes in pathogenic bacteria regulated by this same mechanism. This is just the beginning." ...

Tomato pathogen genome may offer clues about bacterial evolution

... data, allowed me to develop a hypothesis on the evolution of plant pathogenic bacteria since the beginning of agriculture, Vinatzer said. The hypothesis is that plant pathogenic bacteria evolved from relatively weak pathogens that caused disease in ...

Solving an avian scourge could also provide benefits to human health

... to develop a vaccine against a leading poultry disease, called avian pathogenic E. coli (APEC). Mellata is an expert on understanding the genetic ... a suspected source of a suite of infections called ExPEC (extra-intestinal pathogenic E. coli, which includes APEC), which have been associated with illnesses ...

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

... data, allowed me to develop a hypothesis on the evolution of plant pathogenic bacteria since the beginning of agriculture, Vinatzer said. The hypothesis is that plant pathogenic bacteria evolved from relatively weak pathogens that caused disease in ...

Arsenic contamination lacks one-size-fits-all remedy

... Wells are routinely disinfected with chlorine bleach to control pathogenic and other bacteria. However, such treatment raises questions in regions ... The results suggest that disinfection is an effective way to control pathogenic bacteria and may also limit arsenic release in wells under these ...

Unlocking the function of enzymes

... allow researchers to differentiate enzymes that catalyze one reaction in pathogenic organisms and a slightly different reaction in human systems, Raushel ... would allow scientists to design [drugs] that would specifically target a pathogenic organism while not affecting the human enzyme. ...

Emerging (disease) markets

... via the global trade in wildlife. For example, two instances of highly pathogenic avian influenza traveling vast distances in bird hosts include two ... reduced by directing attention to wildlife markets and trade where many pathogenic problems originate. Preventing the spread of pathogens among animal ...

Healing power of aloe vera proves beneficial for teeth and gums, too

... (AGD) clinical, peer-reviewed journal. Aloe vera tooth gel is intended to perform the same function as toothpaste, which is to eliminate pathogenic oral microfloradisease-causing bacteriain the mouth. The ability of aloe vera tooth gel to successfully perform that function has been a point of ...

Another JDRF partner moves research forward with collaboration agreement for diabetes treatment

... Bayhill's BHT-3021 compound is now in Phase I/II clinical trials supported by JDRF, is a plasmid encoding proinsulin designed to target specific pathogenic immune cells involved in the immune response of type 1 diabetes. ...

Scientists tackle the mystery of white-nose syndrome in bats

... species, roughly 5-10 percent survive, which is a viable survival rate. Given that there is evidence of resistance to the fungus and that it is not pathogenic to native bats in Europe, the potential exists that its spread is self-limiting," McCracken said. Eating up to two-thirds of their body weight in ...

Scientists unravel the mystery of white-nose syndrome

... species, roughly 5-10 percent survive, which is a viable survival rate. Given that there is evidence of resistance to the fungus and that it is not pathogenic to native bats in Europe, the potential exists that its spread is self-limiting," McCracken said. Eating up to two-thirds of their body weight in ...

Tips from the American Journal of Pathology

... nervous system, preventing communication between nerve cells in the brain and the spinal cord. A certain type of immune cell, Th17 T cells, plays a pathogenic role in MS and other autoimmune diseases. Using a mouse model of MS, Klenmann et al found that AM80, a synthetic molecule related to vitamin A, ...