Navigation Links
Researchers collaborate to find new vaccine technology decreases E. coli in beef cattle
Date:2/27/2008

MANHATTAN, KAN. -- Despite millions of dollars spent on food safety research over the last 10 years, ground beef recalls due to E. coli O157:H7 were higher in 2007 than in 2006, according to researchers from Kansas State University and West Texas A&M University. E. coli O157:H7 has been linked to foodborne illnesses in humans after consuming contaminated beef and produce.

"We have been studying the effects of a novel vaccine technology to make beef safer," said Dr. Dan Thomson, an associate professor at Kansas State University.

Thomson worked with Dr. Guy Loneragan, West Texas A&M University, and Dr. T.G. Nagaraja, of K-State, to examine the effects of this vaccine on its ability to decrease E. coli shedding in beef cattle.

"We had a decrease in cattle shedding E. coli by 54 percent in our first field study," Thomson said. "However, we increased the amount of SRP exposure in the second field study and decreased the rate of cattle shedding E. coli by 85 percent."

Loneragan said, "This tells us that efficacious interventions that predictably reduce the burden of E. coli O157 on cattle entering packing plants are needed. Successful interventions will reduce the burden of E. coli O157 to a level that is within the capacity of in-plant interventions to handle. If this can be achieved, then tremendous progress toward preventing E. coli O157 from ever getting into ground beef has been made. This vaccine appears to fit this purpose and has great promise."

The team's findings will be presented at the 2008 Beef Industry Safety Summit in Dallas March 5.

Thomson and his colleagues studied Siderophore receptor and porin -- SRP -- technology, which was developed by Epitopix, LLC in Willmar, Minn.

"Siderophore receptor and porin proteins are utilized by food borne pathogens like E. coli to acquire iron," Thomson said. "The SRP vaccine technology immunizes animals against these mechanisms and does not allow the bacteria to take up iron. Iron is to bacteria, as oxygen is to humans. Without iron consumption, the bacteria suffocate and can't grow or replicate."

"We conducted a challenge study, a natural infection study and two large pen field studies at commercial feedyards," Thomson said. "All studies showed positive results of this vaccine, making an impact on decreasing not only the number of the cattle shedding the bacteria but also decreasing the concentration of the bacteria being shed."

Super shedder cattle are cattle that shed E. coli in very high concentrations. "Our natural field study showed that the SRP technology vaccine reduces the number of super shedder cattle," Thomson said.

The two large pen feeding studies the team conducted utilized 20 pens and more than 1,200 head of cattle, Thomson said. The first study conducted in 2006 was funded in part by beef and veal producers and importers through their $1-per-head checkoff and was produced for the Cattlemen's Beef Board and state beef councils by the National Cattlemen's Beef Association. The second study was sponsored by Epitopix, LLC in 2007.


'/>"/>

Contact: Dan Thomson, DVM, Ph.D.
dthomson@vet.k-state.edu
785-532-4254
Kansas State University
Source:Eurekalert

Related medicine news :

1. Stanford researchers find culprit in aging muscles that heal poorly
2. UCLA researchers identify markers that may predict diabetes in still-healthy people
3. Mayo Clinic researchers discover new diagnostic test for detecting infection in prosthetic joints
4. Bipolar disorder relapses halved by Melbourne researchers
5. Cell that triggers symptoms in allergy attacks can also limit damage, Stanford researchers find
6. High and mighty: first common height gene identified by researchers behind obesity gene finding
7. Researchers estimate about 9 percent of US children age 8 to 15 meet criteria for having ADHD
8. Majority of 2.4 Million U.S. Children With ADHD Not Diagnosed or Consistently Treated, According to New Gold Standard Study by Cincinnati Childrens Researchers
9. Researchers develop long-lasting growth hormone
10. Jefferson immunology researchers halt lethal rabies infection in brain
11. Purdue researchers develop technology to detect cancer by scanning surface veins
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/25/2016)... ... 2016 , ... Conventional wisdom preaches the benefits of moderation, whether it’s a ... the bar too high can result in disappointment, perhaps even self-loathing. However, those who ... , Research from PsychTests.com reveals that behind the tendency to set ...
(Date:6/24/2016)... ... 2016 , ... June 19, 2016 is World Sickle Cell Observance Day. In ... benefits of holistic treatments, Serenity Recovery Center of Marne, Michigan, has issued ... Sickle Cell Disease (SCD) is a disorder of the red blood cells, which can ...
(Date:6/24/2016)... ... ... Global law firm Greenberg Traurig, P.A. announced that 20 Florida attorneys are recognized ... this recognition are considered among the top 2 percent of lawyers practicing within the ... this year’s Legal Elite Hall of Fame: Miami Shareholders Mark D. Bloom, Burt ...
(Date:6/24/2016)... ... 24, 2016 , ... Topical BioMedics, Inc, makers of Topricin and MyPainAway Pain Relief Products, join ... wage raise to $12 an hour by 2020 and then adjusting it yearly to increase ... of the minimum wage, assure the wage floor does not erode again, and make future ...
(Date:6/24/2016)... , ... June 24, 2016 , ... ... is proud to recognize Dr. Barry M. Weintraub as a prominent plastic surgeon ... beautiful women in the world, and the most handsome men, look naturally attractive. ...
Breaking Medicine News(10 mins):
(Date:6/26/2016)... , June 27, 2016 Jazz Pharmaceuticals ... waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of ... acquisition of Celator Pharmaceuticals, Inc. ("Celator"; Nasdaq: ... p.m. (Eastern Daylight Time). As previously announced ... into a definitive merger agreement under which Jazz Pharmaceuticals ...
(Date:6/24/2016)... SOUTH SAN FRANCISCO, Calif. , June 24, ... GBT ), a biopharmaceutical company developing novel ... with significant unmet needs, today announced the closing ... 6,400,000 shares of common stock, at the public ... the shares in the offering were offered by ...
(Date:6/24/2016)... June 24, 2016 Dehaier Medical Systems Ltd. ... which develops, markets and sells medical devices and wearable ... signed a strategic cooperation agreement with Hongyuan Supply Chain ... Chain") on June 20, 2016, to develop Dehaier,s new ... cooperation agreement, Dehaier will leverage Hongyuan Supply Chain,s sales ...
Breaking Medicine Technology: