An update on microbiological causes of canine otitis externa in Campania Region, Italy

Martino, Luisa De; Nocera, Francesca Paola; Mallardo, Karina; Nizza, Sandra; Masturzo, Eleonora; Fiorito, Filomena; Iovane, G.; Catalanotti, P

doi:10.1016/j.apjtb.2015.11.012

Cited by 47 publications

(55 citation statements)

References 24 publications

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“…A special attention should be paid on the substantial increase of Gram+ bacteria resistant to the combination amoxicillin/clavulanic acid. Our data for sensitivity to amoxicillin/clavulanic acid are comparable to those of De Martino et al (2016) and Saputra et al (2017), but significantly higher that rates reported by Robaj et al (2015); Metiner et al (2015); Dziva et al (2015) and Terziev & Urumova (2018). The established increase of resistance of staphylococcal isolates to aminoglycosides, although not as pronounced, exceeded several times the rates from other studies.…”

Section: Discussionsupporting

confidence: 83%

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Microbiological and antibacterial resistance profile in canine otitis externa – a comparative analysis

Petrov¹,

Zhelev²,

Marutsov³

et al. 2019

BJVM

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The aim of the present study was to compare the prevalence of microbial agents involved in canine otitis externa and their sensitivity to antibacterial drugs in two periods: 2007–2011 and 2013–2017. For 2013–2017, coagulase-positive staphylococci were the dominating bacterial species (186 isolates), followed by Pseudomonas aeruginosa (82 strains). The rate of isolated yeasts (mainly Malassezia pachydermatis) was substantially high (152 isolates). Compared to the earlier period (2007–2011) a tendency to more frequent occurrence of co-infections was noted – 61.7% and more than 80% of co-infections involved yeasts. Antibacterial resistance patterns showed a clear trend to increased resistance of coagulase-positive staphylococci and β-haemolytic streptococci to amoxicillin/clavulanic acid (42% and 50% respectively) and gentamicin (29%, 40%). Increased resistance of P. aeruginosa was established to gentamicin (16%) and amikacin (18%). The prevalence of pseudomonads resistant to enrofloxacin was lower (27%).

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Section: Discussionsupporting

confidence: 83%

“…The established higher resistance of streptococci to almost all tested antibiotics, in particular to amoxicillin/clavulanic acid, gentamicin and chloramphenicol as in line with the results of De Martino et al (2016). It should be noted that streptococci are rarely isolated from canine otitis patients.…”

Section: Discussionsupporting

confidence: 80%

Microbiological and antibacterial resistance profile in canine otitis externa – a comparative analysis

Petrov¹,

Zhelev²,

Marutsov³

et al. 2019

BJVM

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“…Tobramycin also demonstrated effectiveness in inhibiting colonies of StCP and P. aeruginosa colonies (4) . Gentamicin and neomycin, routinely used in antibiotic formulations for topical treatment of ear diseases (24) , was found to be of low efficiency. This finding reinforces the need for testing of sensibility (7) .…”

Section: Discussionmentioning

confidence: 99%

Effectiveness of Tobramycin and Ciprofloxacin Against Bacterial Isolates in Canine Otitis Externa in Uberaba, Minas Gerais

et al. 2019

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Canine otitis externa is a common and recurrent disease in domestic dogs. Although not being life threatening, it can result in the overuse of antibiotics, increased bacterial resistance and reduction of options for treatment. This study aimed to determine: the principal characteristics (age, race, and gender) of dogs affected by otitis externa; the most frequently bacteria identified as being associated with it and their antimicrobial resistance profiles. A total of 221 bacterial isolates were identified by morphological staining and biochemical processes and tested against eleven antibiotics. Among the 148 dogs diagnosed with otitis externa, 51.4% (76/148) were males and 48.6% (72/148) females. The cases were detected mainly in dogs with age above 7 years (54.7%; 81/148. Among the races examined, poodles were the most numerous (14.84%; 22/148). The most common bacteria found were: coagulase-negative Staphylococcus (StCN), 33.9% (75/221); coagulase-positive Staphylococcus (StCP), 19% (42/221); Proteus spp., 17.2% (38/221) and Pseudomonas aeruginosa, 9.5% (21/221). Simultaneous resistance to more than three classes of antimicrobials were most frequently detected in P. aeruginosa (61.9%; 13/21) and Proteus spp (39.47%; 15/38). According to data obtained from this study, two veterinary medications found to be most effective for topical treatment were tobramycin and ciprofloxacin.

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“…and Staphylococcus sp. isolated from canine with otitis externa were shown to possess resistance to multiple currently available drugs currently used for the treatment of canine otitis externa, such as fluoroquinolones, aminoglycosides and polymyxin B, with resistant rates ranging from 1 to 100% (Bugden 2013;De Martino et al 2016). AMR could be combated with the development of new classes of antimicrobial agents.…”

Section: Introductionmentioning

confidence: 99%

Antimicrobial effects of cinnamon essential oil and cinnamaldehyde combined with EDTA against canine otitis externa pathogens

Sim

Khazandi

et al. 2019

J Appl Microbiol

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Aims The antimicrobial activity of cinnamon essential oil and cinnamaldehyde against bacterial and fungal pathogens associated with canine otitis externa, as well as the effect of their combination with EDTA were investigated. Methods and Results Antimicrobial susceptibility testing was performed using the broth microdilution method while spot‐plating technique was used to determine their bactericidal activity. Time‐kill kinetics and checkerboard assays were performed to confirm the bactericidal activity and combination effects of the compounds. Cinnamon oil and cinnamaldehyde exhibited antimicrobial activity against Gram‐positive and Gram‐negative pathogens, as well as Malassezia pachydermatis. Synergistic interaction was shown when EDTA (672 μg ml−1) was combined with cinnamon oil (41 μg ml−1) and cinnamaldehyde (22 μg ml−1) against Pseudomonas aeruginosa. Cinnamaldehyde exhibited significantly stronger antimicrobial activity than cinnamon bark oil. Conclusions Cinnamon essential oil and cinnamaldehyde, either used alone or in combination with EDTA, were effective against the causative micro‐organisms of canine otitis externa. The data suggest that cinnamaldehyde could be a promising antimicrobial agent against canine otitis externa. Significance and Impact of the Study This study shows that cinnamon essential oil and cinnamaldehyde, especially the latter, could be used in combination with EDTA as novel treatment for sensitive and resistant bacterial and fungal pathogens involved in canine otitis externa.

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An update on microbiological causes of canine otitis externa in Campania Region, Italy

Cited by 47 publications

References 24 publications

Microbiological and antibacterial resistance profile in canine otitis externa – a comparative analysis

Microbiological and antibacterial resistance profile in canine otitis externa – a comparative analysis

Effectiveness of Tobramycin and Ciprofloxacin Against Bacterial Isolates in Canine Otitis Externa in Uberaba, Minas Gerais

Antimicrobial effects of cinnamon essential oil and cinnamaldehyde combined with EDTA against canine otitis externa pathogens

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