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What are the predominant bacilli in the intestines ducklings infected with S. enteritidis?
March 13, 2008The enterobacterial repetitive intergenic consensus-PCR (ERIC-PCR) method has been used to fingerprint the kinetics of microbial community of fecal samples of ducklings orally infected with S. enteritidis. This has yielded valuable insights towards fully understanding the pathogenesis of S. enteritidis infection.
This study, performed by a team led by Professor Chen AC, is described in a research article to be in the February 21, 2008 issue of the World Journal of Gastroenterology.
S. enteritidis remains one of the main causes of food-borne illness and as such is considered to be the most important pandemic zoonosis produced under natural conditions. Currently no treatment is used to modify the mortality and disease incidence.
ERIC-PCR bands of orally inoculated ducklings didn¡-t show obvious change until 24 hours post inoculation (p.i.). The numbers of the ERIC-PCR bands gradually decreased from 24 h to 72 h p.i., and then, with the development of disease, the band numbers gradually increased to 6 d p.i. The prominent bacteria had changed because of S. enteritidis infection and the DNAstar of the staple of ERIC-PCR showed that aerobe and facultative aerobe (Escherichia coli, Shigella, Salmonella) had become the predominant bacilli in intestine of ducklings orally infected with S. enteritidis.
In the view of the authors, to date no clear explanation has existed to elucidate the effect of orally S. enteritidis infection on intestinal microbial community diversity, and no mechanism has been found to explain this action.
The study used an elegant design which included two groups of ducklings. Ducklings in group 1 were used to perform the experiment. Those in group 2 were used to observe clinical signs and mortality. This research was performed by researchers from the Avian Disease Research Center at the College of Veterinary Medicine of Sichuan Agricultural University.
Further research should explain the dynamic distribution regular pattern and the primary penetration sites of S. enteritidis.
World Journal of Gastroenterology
ERIC-PCR bands of orally inoculated ducklings didn¡-t show obvious change until 24 hours post inoculation (p.i.). The numbers of the ERIC-PCR bands gradually decreased from 24 h to 72 h p.i., and then, with the development of disease, the band numbers gradually increased to 6 d p.i. The prominent bacteria had changed because of S. enteritidis infection and the DNAstar of the staple of ERIC-PCR showed that aerobe and facultative aerobe (Escherichia coli, Shigella, Salmonella) had become the predominant bacilli in intestine of ducklings orally infected with S. enteritidis.
In the view of the authors, to date no clear explanation has existed to elucidate the effect of orally S. enteritidis infection on intestinal microbial community diversity, and no mechanism has been found to explain this action.
The study used an elegant design which included two groups of ducklings. Ducklings in group 1 were used to perform the experiment. Those in group 2 were used to observe clinical signs and mortality. This research was performed by researchers from the Avian Disease Research Center at the College of Veterinary Medicine of Sichuan Agricultural University.
Further research should explain the dynamic distribution regular pattern and the primary penetration sites of S. enteritidis.
World Journal of Gastroenterology
Enteritidis Current Events and Enteritidis News RSSSalmonella: Trickier than we imagined
Salmonella is serving up a surprise not only for tomato lovers around the country but also for scientists who study the rod-shaped bacterium that causes misery for millions of people.
What is the life cycle of salmonella enteritidis like in the internal organs?
The Incidence of Salmonella enteritidis infection is common in hospitals for children and the elderly, and amongst immuno-suppressed individuals.
Which segments of the gastrointestinal tract does Salmonella enteritidis penetrate?
Incidence of Salmonella enteritidis infection is common in hospitals for children, the elderly, and immuno-suppressed individuals. A paper in the December 28, 2007 of the World Journal of Gastroenterology (volume 5, issue 48) is notable because of its potential significance for Salmonella enteritidis therapy in the future.
A new vaccine against Enteritidis Salmonella
Javier Ochoa Rep'¡raz has developmed an acellular vaccine aginst Salmonella enteritidis. This involves a world pandemia considered to be the most importante zoonosis or illness/infection transmissible salmonellosis by animals to humans under natural conditions. It is estimated that the incidence of acute worldwide is more than a thousand million cases per annum and causes three million deaths.
Returning travellers could highlight emerging infections worldwide
Though picking up a Salmonella infection abroad could ruin your holiday, reporting it to your doctor could help detect emerging infections in tourist destinations, according to an article published today in BMC Medicine. A comprehensive database containing details of the infections that travellers pick up could help inform countries that have limited surveillance systems about possible disease outbreaks.
Food could be made safer by surface decontamination with steam
Trials have been carried out using steam below, at, or above atmospheric pressure. As the pressure of the steam is increased, higher decontamination temperatures can be achieved. Comparative studies are also assessing the use of treatments with hot air, water immersion, infrared irradiation, ultraviolet (UV) light, microwaves, or ozone.
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