Mycotic Otitis Externa in Animals*

Kuttin, E. S.; Glas, Ingrid

doi:10.1111/j.1439-0507.1985.tb02097.x

Cited by 25 publications

(19 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…were cultured in 0.7% (three cases). In one case, fungal organisms consistent with Aspergillus were also found on cytology of the affected ear 23 . Kumar et al.…”

Section: Discussionmentioning

confidence: 94%

“…In one case, fungal organisms consistent with Aspergillus were also found on cytology of the affected ear. 23 Kumar et al 24 cultured Aspergillus spp. in 7% of 99 dogs with healthy ears and 9% of 101 dogs with otitis externa; associated cytology was not described.…”

Section: Discussionmentioning

confidence: 99%

“…Otomycosis, often due to Aspergillus spp., is a common complication in humans post-operatively and after chronic antibiotic therapy, [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] and has also been described in companion animals in a few publications; however, treatment of canine otomycosis has not been documented. [21][22][23][24][25][26] This case report describes the clinical findings, clinicopathology and treatment of otomycosis due to Aspergillus spp. that complicated atopic otitis in a dog.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Otomycosis due to Aspergillus spp. in a dog: case report and literature review

Coyner¹

2010

Veterinary Dermatology

View full text Add to dashboard Cite

This report describes the clinical findings, clinicopathology and treatment of otomycosis caused by Aspergillus spp. in an atopic dog affected by chronic unilateral purulent otitis externa unresponsive to topical and oral antibiotics and antifungal treatments. Cytology of otic exudate revealed neutrophils and septate fungal hyphae, and otic culture grew Aspergillus spp. and no bacteria. Treatments included allergen-specific immunotherapy, topical and oral antifungal therapy and anti-inflammatory steroid therapy. Final resolution occurred after treatment of the underlying hypersensitivity disorder, administration of topical ketoconazole and debridement of infectious ear exudate. Otomycosis due to filamentous fungi may, as in humans, occur in dogs with ear canals compromised by pre-existing allergic or bacterial otitis, and possibly previous antibiotic therapy. Antifungal medications provided clinical improvement, but the key to successful treatment was the restoration of the normal physiology of the external auditory canal.

show abstract

“…were cultured in 0.7% (three cases). In one case, fungal organisms consistent with Aspergillus were also found on cytology of the affected ear 23 . Kumar et al.…”

Section: Discussionmentioning

confidence: 94%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Otomycosis due to Aspergillus spp. in a dog: case report and literature review

Coyner¹

2010

Veterinary Dermatology

View full text Add to dashboard Cite

show abstract

“…M. pachydermatis ‐associated otitis externa have also been described in ferrets, fennecs, pigs and dromedaries [3,57,116,117]. An exfoliative Malassezia dermatitis was first reported in 1925 in an Indian rhinoceros from Philadelphia [1].…”

Section: Infections Associated With M Pachydermatismentioning

confidence: 99%

Malassezia pachydermatis: a review

Guillot

Bond

2008

Med Mycol

View full text Add to dashboard Cite

The genus Malassezia includes lipophilic yeasts, which are part of the skin microbiota of various mammals and birds. Unlike the rest of Malassezia species, M. pachydermatis is described as non-lipid-dependent, as it is able to grow on Sabouraud glucose agar (SGA) without lipid supplementation. In this study we have examined the phenotypic variability within M. pachydermatis and confirmed its lipid-dependent nature using a synthetic agar medium. We used a selection of representative non-lipid-dependent strains from different animal species and three atypical lipid-dependent strains of this species, which were not able to grow after multiple passages on SGA. More than 400 lipid-dependent Malassezia isolates from animals were studied in order to detect the three lipid-dependent strains of M. pachydermatis. The identity of the atypical strains was confirmed by DNA sequencing. On the other hand, we have modified the Tween diffusion test, which is widely used in the characterization of these yeasts, by using a synthetic agar-based medium instead of SGA. This modification has proved to be useful for differentiation of M. pachydermatis strains, providing reproducible results and a straightforward interpretation. The finding of these peculiar lipid-dependent strains exemplifies the large variability within the species M. pachydermatis, which involves rare atypical strains with particular growth requirements.

show abstract

“…Common pathogenic bacterial species include Staphylococcus , Pseudomonas , Streptococcus , Proteus , Corynebacterium and Enterococcus. 1–4 The most common fungal pathogen to perpetuate canine otitis is Malassezia spp., with rare isolation of Candida and other saprophytic fungal organisms 3,5–11 . Treatments for otitis externa in dogs are varied and include topical therapy with antibiotic, antifungal or corticosteroid medications used alone or in combination.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of fungal flora in normal and diseased canine ears

Campbell¹,

Coyner²,

Rankin

et al. 2010

Veterinary Dermatology

View full text Add to dashboard Cite

This study was undertaken to characterize otic fungal flora encountered in normal dogs, atopic dogs with no clinical or cytological evidence of otitis and dogs with otitis externa. Forty-two normal dogs, 23 atopic dogs and 32 dogs with otitis were included in the study. Samples for otic fungal culture and cytology were obtained from all animals, for a total of 194 ears. Sixty-seven ear samples (34%) were culture positive for saprophytic fungal organisms, as follows: 43 (64%) Penicillium species, 13 (19%) Aspergillus species and the remaining 17% comprised of various other saprophytic fungal organisms. Cytological evidence of saprophytic fungal colonization or infection was not found in any animal. There was no relationship between positive saprophytic fungal culture and any study group. Thirty-three ear samples (17%) were positive for Malassezia pachydermatis. Cytological findings of Malassezia were significantly associated with positive culture for Malassezia (P = 0.006 left ear; P = 0.019 right ear). Furthermore, increased numbers of Malassezia led to a higher chance of positive culture (P = 0.003 left ear; P = 0.008 right ear; McNemar's test). Malassezia pachydermatis was more likely to be cultured from ears with increased cerumen. Ear type (erect or pendulous) was not significantly associated with positive culture for Malassezia or saprophytic fungal organisms. There was no relationship between positive Malassezia culture and any study group; however, Malassezia was more likely to be cultured from individual dogs in the atopic or otitis groups that also had other dermatological signs consistent with allergic dermatitis and/or pyoderma (P = 0.031 left ear; P = 0.005 right ear).

show abstract

Mycotic Otitis Externa in Animals*

Cited by 25 publications

References 4 publications

Otomycosis due to Aspergillus spp. in a dog: case report and literature review

Otomycosis due to Aspergillus spp. in a dog: case report and literature review

Malassezia pachydermatis: a review

Evaluation of fungal flora in normal and diseased canine ears

Contact Info

Product

Resources

About