Navigation Links
Talented bacteria make food poisoning unpredictable
Date:9/5/2010

While we are often exposed to bacteria in our food which could cause food poisoning, we don't always become ill - why should this be so?

Professor Colin Hill who is presenting his work at the Society for General Microbiology's autumn meeting in Nottingham today describes how bacteria use different tricks to aid their survival inside the body, helping to explain why food poisoning can be so unpredictable.

One of the biggest challenges faced by food-borne bacteria is acid. Acidic conditions, particularly in the stomach and in the gut will kill most microbes found in contaminated food.

Professor Hill's group at University College Cork has revealed that Listeria bacteria, which may be found in soft cheeses and chilled ready-to-eat products, can overcome harsh acidic conditions by exploiting key food ingredients. Listeria that survive are able to cause serious and sometimes fatal infections, particularly in the elderly and pregnant women.

Certain food constituents such as the amino acid, glutamate, can help the bacteria neutralise acid, allowing the bacteria to pass through the stomach unscathed. Professor Hill explains the significance of this. "People who consume foods that are contaminated with Listeria and are also high in glutamate, such as soft cheese or meat products, have a higher chance of developing serious infection than someone eating the same quantity of bacteria in a low-glutamate food," he said. "Of course this is further complicated by the fact that a contaminated, low-glutamate food could be eaten in combination with a high-glutamate food such as tomato juice, which could also increase the risk of infection."

Listeria can also take advantage of food processing and storage conditions to help them survive. "Bacteria that are exposed to low pH before entering the body may adapt to become more acid-tolerant and therefore better equipped to deal with acidic conditions in the body. For example, Listeria contam
'/>"/>

Contact: Laura Udakis
l.udakis@sgm.ac.uk
44-118-988-1843
Society for General Microbiology
Source:Eurekalert

Page: 1 2

Related biology news :

1. Imaging reveals key metabolic factors of cannibalistic bacteria
2. Antibacterial peptide could aid in treating soldiers burn wound infections
3. Stomach bacteria need vitamin to establish infection
4. Research targets basic metabolism of disease-causing fungi, bacteria
5. Bacteria breakthrough is heaven scent
6. Illinois researchers use pyrosequencing to study canine intestinal bacteria
7. Oil-eating bacteria may determine environmental impact of Gulf oil
8. Study shows that hitchhiking bacteria can go against the flow
9. Management of ascites, spontaneous bacterial peritonitis, and hepatorenal syndrome in cirrhosis
10. Mining bacterial genomes reveals valuable hidden drugs
11. Some trees farm bacteria to help supply nutrients
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/2/2014)... lithographic limestone is well known as a result ... area (for example, Archaeopteryx). Now, for the first ... French equivalent of these outcrops - discoveries which ... water treader. , Despite the abundance of fossils ... been obtained from the Late Kimmeridgian equivalents of ...
(Date:9/2/2014)... stride; others are done in by it. New research ... this so-called stress gap in mice with very similar ... to better understand the development of psychiatric disorders such ... has unique experiences as it goes through its life. ... the expression of genes, and as a result, affect ...
(Date:9/1/2014)... U.S. has improved steadily in recent yearsspurred in large ... remains poor and disparities continue to widen among socioeconomic ... Harvard School of Public Health (HSPH). , "The study ... extensive efforts by many groups and individuals to improve ... also indicates that these efforts need to be expanded," ...
Breaking Biology News(10 mins):Exceptionally well preserved insect fossils from the Rhône Valley 2Discovery hints at why stress is more devastating for some 2Discovery hints at why stress is more devastating for some 3Quality of US diet shows modest improvement, but overall remains poor 2Quality of US diet shows modest improvement, but overall remains poor 3
... has identified a lung protein that appears to play ... an antibody to block its activity, Indiana University scientists ... the protein, a cytokine named EMAPII, could provide a ... M.D., associate professor of medicine at the Indiana University ...
... take to regenerate a limb? Biologists have long thought that ... cells that can generate any tissue in the body. But ... regrow the complete organ, at least in zebrafish. Researchers ... shown that cells capable of regenerating a zebrafish fin do ...
... has worked with wireless sensor network developers Senceive, ... across critical structures in the UK that will ... Senceive,s main application area is long-term infrastructure monitoring. ... used to assess the condition of railway structures, ...
Cached Biology News:Protein could offer target to reduce lung damage from smoking-caused emphysema 2Zebrafish regrow fins using multiple cell types, not identical stem cells 2NPL helps Senceive to offer improved monitoring of structural assets across the UK 2
(Date:9/2/2014)... a billionth of a meter in size, are around ... benefit human health, as in some innovative early cancer ... viruses, air pollution, traffic emissions, cosmetics, sunscreen and electronics. ... St. Louis, led by Lan Yang, PhD, the Das ... Engineering, and their collaborators at Tsinghua University in China ...
(Date:9/2/2014)... , Sept. 2, 2014  TransCelerate BioPharma ... a recommended approach for protecting personal data in ... researchers, patients and others. The document describes an ... information from CSRs and other related clinical trial ... The goal of the TransCelerate CSR Redaction ...
(Date:9/2/2014)... Calif. , Sept. 2, 2014  Xencor, ... biopharmaceutical company developing engineered monoclonal antibodies for the ... and cancer, today announced the appointment of ... development and the appointment of Lloyd Rowland ... general counsel. "Debra,s expertise in ...
(Date:9/2/2014)...  Spherix Incorporated (SPEX) -- an intellectual property development company committed ... announced that the United States Patent & Trademark Office ... month of August that are part of a standard ... patents are: , U.S.RE45,065 issued August ... and , U.S.RE45,095 issued August 26, 2014.  ...
Breaking Biology Technology:Engineers develop new sensor to detect tiny individual nanoparticles 2Engineers develop new sensor to detect tiny individual nanoparticles 3TransCelerate BioPharma Inc. Releases Recommended Approach for Protecting Personal Data in Clinical Study Reports 2TransCelerate BioPharma Inc. Releases Recommended Approach for Protecting Personal Data in Clinical Study Reports 3Xencor Appoints Debra Zack, M.D., Ph.D., Vice President, Clinical Development and Lloyd Rowland, Senior Vice President, Chief Compliance Officer and General Counsel 2Xencor Appoints Debra Zack, M.D., Ph.D., Vice President, Clinical Development and Lloyd Rowland, Senior Vice President, Chief Compliance Officer and General Counsel 3United States Patent & Trademark Office Issues Three New Standard Essential Patents to Spherix 2
... presented today show that RAPAFLO(R) (silodosin) significantly reduced ... pain syndrome (CP/CPPS).  In the study presented at ... RAPAFLO(R) also significantly improved urinary symptoms as well ... pelvic pain syndrome (CP/CPPS) is a common condition ...
... 2011 Brian Olson didn,t exactly fit the image of an ... first to admit it. "I had just a GED and was ... math." With a vague notion that he wanted to ... enrolled in basic chemistry and biology courses as a freshman. ...
... May 17, 2011 P f enex ... has submitted a Biologics Master File (BMF) to the United ... carrier protein to support the development of conjugate vaccine products ... supplying cGMP grade CRM197 carrier protein to multiple partners in ...
Cached Biology Technology:Watson Pharmaceuticals Announces New Research Showing RAPAFLO(R) (silodosin) Improves Outcomes for Chronic Prostatitis/Chronic Pelvic Pain Syndrome 2Watson Pharmaceuticals Announces New Research Showing RAPAFLO(R) (silodosin) Improves Outcomes for Chronic Prostatitis/Chronic Pelvic Pain Syndrome 3Watson Pharmaceuticals Announces New Research Showing RAPAFLO(R) (silodosin) Improves Outcomes for Chronic Prostatitis/Chronic Pelvic Pain Syndrome 4Watson Pharmaceuticals Announces New Research Showing RAPAFLO(R) (silodosin) Improves Outcomes for Chronic Prostatitis/Chronic Pelvic Pain Syndrome 5Watson Pharmaceuticals Announces New Research Showing RAPAFLO(R) (silodosin) Improves Outcomes for Chronic Prostatitis/Chronic Pelvic Pain Syndrome 6From GED to PhD: Borough of Manhattan Community College's Brian Olson Faces Academic Deficits Only to Be Rewarded with Acceptance to CUNY's PhD Program in Biochemistry 2Pfenex Inc., Through Its Reagent Proteins Business Division, Announces Submission of Biologics Master File for Recombinant CRM197 to US FDA 2Pfenex Inc., Through Its Reagent Proteins Business Division, Announces Submission of Biologics Master File for Recombinant CRM197 to US FDA 3
...
...
...
D.R. Harper and C. Grose (1994) • Includes: virus structure & replication, fundamental virology, immunology and pathogenesis, vaccines and antiviral drugs, novel diagnostic techniques, cloning a...
Biology Products: