Research Topics
| John A AngelosSummaryAffiliation: University of California Country: USA Publications
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Publications
Randomized controlled field trial to assess efficacy of a Moraxella bovis pilin-cytotoxin-Moraxella bovoculi cytotoxin subunit vaccine to prevent naturally occurring infectious bovine keratoconjunctivitisJohn A Angelos
Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California Davis, Davis, CA 95616, USA
Am J Vet Res 73:1670-5. 2012..To evaluate efficacy of a recombinant Moraxella bovis pilin-cytotoxin-Moraxella bovoculi cytotoxin subunit vaccine to prevent naturally occurring infectious bovine keratoconjunctivitis (IBK)...
Minimum inhibitory concentrations of selected antimicrobial agents for Moraxella bovoculi associated with infectious bovine keratoconjunctivitisJohn A Angelos
Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
J Vet Diagn Invest 23:552-5. 2011..The low MIC(90) of these M. bovoculi isolates suggests that commonly used antibiotics for treatment of IBK associated with M. bovis should also be effective against M. bovoculi...
Recombinant Moraxella bovoculi cytotoxin-ISCOM matrix adjuvanted vaccine to prevent naturally occurring infectious bovine keratoconjunctivitisJohn A Angelos
Department of Medicine and Epidemiology, University of California, Davis, CA 95616, USA
Vet Res Commun 34:229-39. 2010..bovis and M. bovoculi exist. Use of M. bovoculi antigens alone in vaccines to prevent IBK may not be beneficial in herds where IBK is associated with both M. bovoculi and M. bovis...
Moraxella bovoculi and infectious bovine keratoconjunctivitis: cause or coincidence?John A Angelos
Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
Vet Clin North Am Food Anim Pract 26:73-8, table of contents. 2010..Developers of vaccines against IBK should consider including M bovoculi antigens in vaccines to prevent IBK...
Differentiation of Moraxella bovoculi sp. nov. from other coccoid moraxellae by the use of polymerase chain reaction and restriction endonuclease analysis of amplified DNAJohn A Angelos
Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
J Vet Diagn Invest 19:532-4. 2007..bovoculi sp. nov. and all possessed an AfaI site. A PCR coupled with restriction analysis of amplified DNA can aid in identifying M. bovoculi sp. nov...
Prevention of naturally occurring infectious bovine keratoconjunctivitis with a recombinant Moraxella bovis pilin-Moraxella bovis cytotoxin-ISCOM matrix adjuvanted vaccineJohn A Angelos
Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
Vet Microbiol 125:274-83. 2007..Efficacy of an M. bovis vaccine may be reduced in herds where IBK is associated with M. bovoculi sp. nov...
Identification and characterization of complete RTX operons in Moraxella bovoculi and Moraxella ovisJohn A Angelos
Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
Vet Microbiol 125:73-9. 2007..bovoculi and M. ovis; this antiserum did not neutralize the hemolytic activity of M. bovis. M. bovoculi and M. ovis possess genes that encode proteins related to pathogenic factors of M. bovis...
Relatedness of cytotoxins from geographically diverse isolates of Moraxella bovisJohn A Angelos
Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, 2108 Tupper Hall, Davis, CA 95616, USA
Vet Microbiol 124:382-6. 2007..Vaccines against IBK that incorporate MbxA as antigen may offer protection against geographically diverse strains of M. bovis...
Moraxella bovoculi sp. nov., isolated from calves with infectious bovine keratoconjunctivitisJohn A Angelos
Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
Int J Syst Evol Microbiol 57:789-95. 2007..nov. is proposed. The type strain is strain 237(T) (=ATCC BAA-1259(T)=CCUG 52049(T))...
Prevention of naturally occurring infectious bovine keratoconjunctivitis with a recombinant Moraxella bovis cytotoxin-ISCOM matrix adjuvanted vaccineJohn A Angelos
Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
Vaccine 23:537-45. 2004..The trend for a reduced cumulative proportion of IBK in the vaccinated calves over the 20 week trial suggests that a recombinant M. bovis cytotoxin vaccine may be beneficial in helping to prevent naturally occurring IBK...
An RTX operon in hemolytic Moraxella bovis is absent from nonhemolytic strainsJohn A Angelos
Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, 2108 Tupper Hall, Davis 95616, USA
Vet Microbiol 92:363-77. 2003..These strains did, however, amplify with primers specific for the 5' region flanking mbxC. M. bovis harbors a classical RTX operon that is absent in nonhemolytic strains...
Effectiveness of a cytolysin-enriched vaccine for protection of cattle against infectious bovine keratoconjunctivitisLisle W George
Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
Am J Vet Res 66:136-42. 2005..CONCLUSIONS AND CLINICAL RELEVANCE: Calves that were vaccinated with a cytolysin-enriched vaccine had some resistance to IBK. Vaccines containing concentrated diafiltered M bovis cytolysin could protect beef calves against IBK...
Efficacy of a long-acting formulation of ceftiofur crystalline-free acid for the treatment of naturally occurring infectious bovine keratoconjunctivitisErica L Dueger
Department of Veterinary Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
Am J Vet Res 65:1185-8. 2004..CONCLUSIONS AND CLINICAL RELEVANCE: A single dose of CCFA administered into the posterior aspect of a pinna had a positive treatment effect against naturally occurring IBK in calves with corneal ulcerations...
Ulcerative blepharitis and conjunctivitis in adult dairy cows and association with Moraxella bovoculiKlibs N Galvão
Veterinary Medicine Teaching and Research Center, University of California Davis, Tulare, California 93274, USA
Can Vet J 51:400-2. 2010..Lesions typically affected 1 eye, and involved the eyelid skin and conjunctiva. Oxytetracycline treatment led to cure within 2 wk...
Stability, antigenicity, and aggregation of Moraxella bovis cytolysin after purification and storageLisle W George
Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
Am J Vet Res 65:977-83. 2004..bovis isolates. Diafiltration could be useful for bulk semipurification of M. bovis cytolysin. Cytolysin-enriched vaccines of M. bovis could be contaminated by endotoxin...
The Moraxella bovis RTX toxin locus mbx defines a pathogenicity islandJohn F Hess
Department of Cell Biology and Human Anatomy, School of Medicine, University of California, 3301 Tupper Hall, Davis, CA 95616, USA
J Med Microbiol 55:443-9. 2006..bovis, suggests that this RTX operon is located on a mobile genetic element, and supports the designation of this region as a pathogenicity island, which is believed to be the first such element demonstrated in M. bovis...
