Navigation Links
C. difficile vaccine proves safe, 100 percent effective in animal models
Date:7/31/2014

An experimental vaccine protected 100 percent of animal models against the highly infectious and virulent bacterium, Clostridium difficile, which causes an intestinal disease that kills approximately 30,000 Americans annually. The research is published ahead of print in Infection and Immunity.

In the study, the vaccine protected the mice and non-human primates against the purified toxins produced by C. difficile, as well as from an orogastric spore infection, a laboratory model that mimics the human disease, after only two immunizations.

"Animals that received two immunizations did not get sick or show signs of C. difficile-associated disease," says corresponding author Michele Kutzler, of Drexel University College of Medicine, Philadelphia.

"While our research was conducted in animal models, the results are very translatable to the clinic," says Kutzler. "In some cases, patients who acquire C. difficile can develop serious complications including severe diarrhea, toxic megacolon, bowel perforation, multi-organ failure, and death. Once fully developed, our DNA vaccine could prevent the deadly effects of C. difficile infection when administered to hospital patients at risk of acquiring C. difficile."

The protection following just two immunizations is especially important since the time window in humans between colonization with C. difficile and the onset of disease symptoms can be a mere 10-14 days, says Kutzler.

The vaccine protects against the bacterial toxins by mustering anti-toxin neutralizing antibodies, says Kutzler.

The cost of fighting the half million C. difficile infections that occur annually in the US is estimated to be nearly $10 billion, most of which could be saved by a successful preventive vaccine, says Kutzler. Morbidity and mortality have risen over the last decade, likely due to increased prevalence of relapsing disease, and hypervirulent strains, she adds.

Treating the disease is especially difficult, as the bacterial spores persist in the hospital environment, where most infections occur. There is no standard, effective treatment for recurrent disease, but a small number of experimental fecal transplants for C. difficile have had a very high success rate, with no adverse reactions.

"Since our vaccine was safe, effective after only two immunizations, and performed exceptionally well, we feel that this success warrants further studies using human patients," says Kutzler.


'/>"/>

Contact: Jim Sliwa
jsliwa@asmusa.org
202-942-9297
American Society for Microbiology
Source:Eurekalert

Related biology news :

1. Researchers create vaccine for dust-mite allergies
2. Nasal mucosal inhalation of AD vaccine attenuates Aβ1-42-induced cytotoxicity
3. First positive results toward a therapeutic vaccine against brain cancer
4. Researchers shut down a SARS cloaking system; findings could lead to SARS, MERS vaccines
5. UNL team explores new approach to HIV vaccine
6. Ebola vaccine success highlights dilemma of testing on captive chimps to save wild apes
7. New experimental vaccine produces immune response against MERS virus
8. New technique brings us closer to HIV and Hepatitis C vaccines
9. Potential lung cancer vaccine shows renewed promise
10. Researchers have identified a novel immunological mechanism of great importance for vaccine developm
11. Can personalized tumor vaccines improve interleukin-2 treated metastatic melanoma?
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/6/2017)... SINGAPORE , May 5, 2017 ... has just announced a new breakthrough in biometric ... that exploits quantum mechanical properties to perform ... new smart semiconductor material created by Ram Group ... across finance, entertainment, transportation, supply chains and security. ...
(Date:4/13/2017)... April 13, 2017 UBM,s Advanced Design and ... will feature emerging and evolving technology through its 3D ... will run alongside the expo portion of the event ... and demonstrations focused on trending topics within 3D printing ... and manufacturing event will take place June 13-15, 2017 at ...
(Date:4/11/2017)... 2017 NXT-ID, Inc. (NASDAQ:   NXTD ... the appointment of independent Directors Mr. Robin D. Richards ... of Directors, furthering the company,s corporate governance and expertise. ... Gino Pereira , Chief ... to their guidance and benefiting from their considerable expertise as ...
Breaking Biology News(10 mins):
(Date:10/10/2017)... CALIFORNIA (PRWEB) , ... October 10, 2017 , ... ... technological innovation and business process optimization firm for the life sciences and healthcare ... BoxWorks conference in San Francisco. , The presentation, “Automating GxP Validation for ...
(Date:10/9/2017)... , Oct. 9, 2017  BioTech Holdings ... mechanism by which its ProCell stem cell therapy ... limb ischemia.  The Company, demonstrated that treatment with ... of limbs saved as compared to standard bone ... molecule HGF resulted in reduction of therapeutic effect.  ...
(Date:10/9/2017)... ... ... At its national board meeting in North Carolina, ARCS® Foundation ... Physics and Astronomy, has been selected for membership in ARCS Alumni Hall of ... Breakthrough Prize in Fundamental physics for the discovery of the accelerating expansion of the ...
(Date:10/9/2017)... Antonio, Texas (PRWEB) , ... ... ... new study published on October 5, 2017, in the medical journal, Epilepsia, ... equivalence with the gold standard, video EEG, in detecting generalized tonic-clonic seizures ...
Breaking Biology Technology: