Reference : Characterization of the cattle serum antibody responses against TEM beta-lactamase an...
Scientific journals : Article
Life sciences : Biochemistry, biophysics & molecular biology
Life sciences : Veterinary medicine & animal health
Characterization of the cattle serum antibody responses against TEM beta-lactamase and the nonimmunogenic Escherichia coli heat-stable enterotoxin (STaI)
Zervosen, Astrid mailto [Université de Liège - ULiège > > Centre de recherches du cyclotron >]
Saegerman, Claude mailto [Université de Liège - ULiège > Département des maladies infectieuses et parasitaires > Epidémiologie et analyse des risques appl. aux sc. vétér. >]
Antoniotti, Ingrid [> > > >]
Robert, Béatrice [> > > >]
Ruth, Nadia [> > > >]
Collard, Alfred [> >]
Schynts, Frédéric [> > > >]
Galleni, Moreno mailto [Université de Liège - ULiège > Département des sciences de la vie > Macromolécules biologiques >]
Mercuri, Paola mailto [Université de Liège - ULiège > > Centre d'ingénierie des protéines >]
FEMS Immunology & Medical Microbiology
Blackwell Publishing
Yes (verified by ORBi)
United Kingdom
[en] heat-stable enterotoxin STa ; beta-lactamase TEM-1 ; vaccine ; cattle ; hybrid protein
[en] In order to test the use of a subunit recombinant vaccine for its capacity to induce antibodies against the nonimmunogenic heat-stable enterotoxin STa from Escherichia coli and the TEM-1 beta-lactamase, cattle were immunized with a hybrid protein created by insertion of the STa sequence at position 197 of the TEM-1 beta-lactamase. Specific anti-STa IgG and IgG1 antibodies were detected at low levels, while no IgG2 antibodies were detected. In contrast, high levels of the different anti-TEM IgG subtypes were detected in cattle sera. In addition, beta-lactamase activity was inhibited by the sera. The presence of antibodies against STa and TEM-1 beta-lactamase was assessed in sera from 366 cattle taken from the field. No significant level of IgGs against the toxin or the TEM-1 was detected. A comparison of the antibody level between the immunized and the nonimmunized animals clearly demonstrated that STa was not able to induce a significant level of antibodies in the vaccinated animals. In contrast, a strong antibody response against TEM-1 beta-lactamase was demonstrated.
Centre d'Ingénierie des Protéines - CIP

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