Antibodies against a truncated Staphylococcus aureus fibronectin-binding protein protect against dissemination of infection in the rat.
Staphylococcus aureus bacteraemia (SAB) originating from local infections can lead to severe secondary infections such as endocarditis. The protective effect of antibodies against secondary infections was studied in a rat model, where a local joint infection leads to bacteraemia and endocarditis on damaged aortic valves. In this study, immunizations with a truncated D2-domain of the S. aureus fibronectin-binding protein displayed on a cow-pea mosaic virus (CPMV-D) carrier induced protection against endocarditis (P < 0.05). Opsonization of S. aureus with antibodies raised against CPMV-D stimulated both neutrophil activity and macrophage phagocytosis in vitro. Furthermore, intravenous administration of these antibodies protected mice from weight loss due to SAB.
Rennermalm
A
A
Department of Microbiology, Pathology and Immunology, Karolinska Institute, Huddinge, Sweden.
Li
Y H
YH
Bohaufs
L
L
Jarstrand
C
C
Brauner
A
A
Brennan
F R
FR
Flock
J I
JI
D018829:Adhesins, Bacterial; D000595:Amino Acid Sequence; D000818:Animals; D000907:Antibodies, Bacterial / Q000096:biosynthesis; D000918:Antibody Specificity; D016470:Bacteremia / Q000276:immunology / Q000517:prevention & control; D001426:Bacterial Proteins / Q000235:genetics / Q000276:immunology*; D001428:Bacterial Vaccines / Q000235:genetics / Q000494:pharmacology; D002352:Carrier Proteins / Q000235:genetics / Q000276:immunology*; D002678:Chimera / Q000235:genetics; D017798:Comovirus / Q000235:genetics; D004697:Endocarditis, Bacterial / Q000276:immunology / Q000517:prevention & control; D005260:Female; D008969:Molecular Sequence Data; D009895:Opsonin Proteins / Q000276:immunology; D010446:Peptide Fragments / Q000235:genetics / Q000276:immunology; D051381:Rats; D017208:Rats, Wistar; D013203:Staphylococcal Infections / Q000276:immunology / Q000517:prevention & control*; D013211:Staphylococcus aureus / Q000235:genetics / Q000276:immunology*; D014614:Vaccines, Synthetic / Q000235:genetics / Q000494:pharmacology
D018829:Adhesins, Bacterial; D000907:Antibodies, Bacterial; D001426:Bacterial Proteins; D001428:Bacterial Vaccines; D002352:Carrier Proteins; D009895:Opsonin Proteins; D010446:Peptide Fragments; D014614:Vaccines, Synthetic; C078635:fibronectin-binding proteins, bacterial