Moraxella bovoculi em casos de ceratoconjuntivite infecciosa bovina no Rio Grande do Sul

Libardoni, Felipe; Scherer, Charles Fernando Capinos; Farias, Luana D’Avila; Vielmo, Andréia; Balzan, Cláudia; Vargas, Agueda Castagna de

doi:10.1590/s0100-736x2012000800011

Cited by 10 publications

(9 citation statements)

References 15 publications

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“…In contrast, in sheep, the main microorganisms isolated from IK lesions are Mycoplasma conjunctivae , Chlamydophila psittaci and M. ovis ( Elad et al , 1988 ; Dagnall, 1994 ). M. bovis can also be isolated from sheep but it is found at a lower frequency ( Libardoni et al , 2012 ). The treatment of this disease is based on antimicrobial therapy, which should be adopted considering that it is necessary to combat two or more species of Moraxella present in the same lesion.…”

Section: Introductionmentioning

confidence: 99%

Differences in the antimicrobial susceptibility profiles of Moraxella bovis, M. bovoculi and M. ovis

Maboni¹,

Gressler²,

Espíndola³

et al. 2015

Braz. J. Microbiol.

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The aim of this study was to determine the differences in the antimicrobial susceptibility profiles of Moraxella bovis, M. bovoculi and M. ovis. Thirty-two strains of Moraxella spp. isolated from cattle and sheep with infectious keratoconjunctivitis were tested via broth microdilution method to determine their susceptibility to ampicillin, cefoperazone, ceftiofur, cloxacillin, enrofloxacin, florfenicol, gentamicin, neomycin, oxytetracycline and penicillin. The results demonstrated that Moraxella spp. strains could be considered sensitive for most of the antimicrobials tested in this study, but differences between the antimicrobial susceptibility profiles of these three Moraxella species were found. M. bovis might differ from other species due to the higher MIC and MBC values it presented.

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Section: Introductionmentioning

confidence: 99%

Differences in the antimicrobial susceptibility profiles of Moraxella bovis, M. bovoculi and M. ovis

Maboni¹,

Gressler²,

Espíndola³

et al. 2015

Braz. J. Microbiol.

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“…bovis has been considered the main aetiological agent of IBK for decades [24]. Recently an increasing number of studies have demonstrated the presence of M. bovoculi associated to IBK cases [6][7][8]. It has been established that this is the Moraxella spp.…”

Section: Discussionmentioning

confidence: 99%

“…However, more recently, other species belonging to the genus like Moraxella bovoculi have also been associated to IBK cases in USA, Brazil and Uruguay so far [1,[6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Virulence genes in Moraxella spp. isolates from infectious bovine keratoconjunctivitis cases

Sosa

Umpiérrez

Acquistapace

et al. 2015

J Infect Dev Ctries

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Introduction: Infectious bovine keratoconjunctivitis (IBK) is an important ocular disease which affects cattle worldwide. To advance towards IBK effective prevention and treatment strategies, it is important to define the distribution and genetic diversity of potential virulence factors present in M. bovis and M. bovoculi. The objective of this work was to identify and to analyze Moraxella spp. potential virulence factor genes in a collection of clinical isolates. Methodology: The presence and diversity of virulence factors in a collection of Moraxella spp. strains isolated since 1983 to 2009 in Uruguay was analyzed by PCR using primers for partial amplification of tolC, omp79, plb, fur and mbxA. The selection criterion of these genes was based on the fact that they encode virulence factors which could be present and conserved within strains, an important issue for the development of vaccines. Results: Differences in PCR amplification were observed within tolC (84%), omp79 (80%), plb (76%) and fur (44%) in M. bovis strains, whereas mbxA was amplified in all M. bovis and M. bovoculi strains. Regarding genetic diversity, the tolC nucleotide sequences were the less diverse within all M. bovis and mbxA were the less diverse within all M. bovis and M. bovoculi strains. Conclusions: PCR amplifications suggest the occurrence of differences between both Moraxella species, related to evaluated genes within Moraxella spp. strains and suggests that both species may have different pathogenic attributes. MbxA and the outer membrane protein TolC might be considered for future studies to develop new vaccines against IBK.

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“…Interestingly, both M. bovoculi and M. ovis strains were isolated from the same sheep eye lesion. Since the first description of M. bovoculi, studies from different parts of the world reported its isolation from eye lesions in cattle Libardoni et al, 2012;Sosa and Zunino, 2013); however, the exact role played by this species in the pathogenesis of IK is still not fully understood. Similar results were found for South American strains showing a hyper conservation of the MbxA-3 0 region .…”

Section: Discussionmentioning

confidence: 99%

“…Although early investigations proposed M. ovis, bacterium involved in sheep eye disease, might be the case (Elad et al, 1988), more recent investigations isolated and identified M. bovoculi in cattle lesions Libardoni et al, 2012;Sosa and Zunino, 2013).…”

Section: Introductionmentioning

confidence: 99%

Phylogenetic analysis and genetic diversity of 3′ region of rtxA gene from geographically diverse strains of Moraxella bovis, Moraxella bovoculi and Moraxella ovis

Farias

Maboni

Matter

et al. 2015

Veterinary Microbiology

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Moraxella bovoculi em casos de ceratoconjuntivite infecciosa bovina no Rio Grande do Sul

Abstract: Pesq. Vet. Bras. 32(8):743-746, agosto 2012 743 RESUMO.-A ceratoconjuntivite infecciosa (CI), embora raramente fatal, resulta em perdas econômicas signiϐicativas para os rebanhos bovinos e ovinos.

Cited by 10 publications

References 15 publications

Differences in the antimicrobial susceptibility profiles of Moraxella bovis, M. bovoculi and M. ovis

Differences in the antimicrobial susceptibility profiles of Moraxella bovis, M. bovoculi and M. ovis

Virulence genes in Moraxella spp. isolates from infectious bovine keratoconjunctivitis cases

Phylogenetic analysis and genetic diversity of 3′ region of rtxA gene from geographically diverse strains of Moraxella bovis, Moraxella bovoculi and Moraxella ovis

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