<i>Talaromyces</i> spp. infections in dogs from the Southern United States

Bacon, Rebecca; Lovell, Stephanie; Hoffmann, Aline Rodrigues; Fratzke, Alycia P.

doi:10.1177/03009858221075589

Cited by 4 publications

(1 citation statement)

References 24 publications

(63 reference statements)

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“…Various fungi are associated with cutaneous infections, including Fusarium and Scedosporium, with systemic disease also reported for Acremonium, Geomyces, Lemontospora, Oxyporus, Paecilomyces, Penicillium, Rasamsonia, and Talaromyces. 5,16 Both immunocompromised and immunocompetent animals may develop nodular to ulcerative, dermal to subcutaneous lesions, most often on the distal extremities, or systemic disease. 15 Lesions are composed of neutrophilic to pyogranulomatous inflammation with numerous nonpigmented fungal hyphae seen extracellularly and within macrophages and multinucleated giant cells.…”

Section: Hyalohyphomycosismentioning

confidence: 99%

Hyphae, pseudohyphae, yeasts, spherules, spores, and more: A review on the morphology and pathology of fungal and oomycete infections in the skin of domestic animals

et al. 2023

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Fungi are among the most common infectious agents affecting the skin of animals. The skin can serve as a port of entry for fungal infections, which can eventually become disseminated. In some regions of the world, oomycetes, such as Pythium and Lagenidium, are also responsible for a significant number of severe cutaneous infections. Histologic evaluation of fungal morphology, including size, shape, septation, branching, and budding characteristics, combined with the distribution of inflammatory infiltrates within different skin layers can potentially identify etiologic agents, guiding selection of antifungals and additional diagnostics. Fungal infections of the skin surface are typically caused by Malassezia and rarely Candida, with opportunistic fungi also capable of colonizing the skin surface, especially when the barrier is broken. Folliculocentric infections, caused by dermatophytes, result in mild to severe inflammation and can occasionally penetrate deep into the skin. A wide range of fungi, including agents of hyalohyphomycosis, phaeohyphomycosis, and dimorphic fungal infections, as well as oomycetes, result in nodular cutaneous and subcutaneous lesions. With the occasional exception of dimorphic fungi, fungal speciation often requires cultures performed on fresh tissues. However, molecular techniques such as pan-fungal polymerase chain reaction on paraffin blocks is becoming an increasingly useful tool to distinguish between cutaneous fungal pathogens. This review focuses on describing the clinical and histologic features of the most common fungal and oomycete infections affecting the skin of animals, divided according to distribution patterns of lesions and fungal or oomycete morphology.

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Section: Hyalohyphomycosismentioning

confidence: 99%

Hyphae, pseudohyphae, yeasts, spherules, spores, and more: A review on the morphology and pathology of fungal and oomycete infections in the skin of domestic animals

et al. 2023

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Cytomorphology of Deep Mycoses in Dogs and Cats

Dehghanpir

2023

Veterinary Clinics of North America: Small Animal Practice

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Penicillium and Talaromyces spp. emerging pathogens in dogs since 1990s

Monpierre,

Soetart,

Valsecchi

et al. 2023

Medical Mycology

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Penicillium and Talaromyces spp. are environmental saprophytic molds rarely encountered as infectious agents in humans and animals. This article summarizes the clinical features, treatment, and outcomes of proven infections caused by Penicillium or Talaromyces in four dogs in France. Two dogs had disseminated infections while the other two had a localized form. All dogs had positive histopathological results showing the presence of hyaline septate hyphae and a positive fungal culture with typical Penicillium conidiophores. Talaromyces georgiensis (n = 1), Penicillium labradorum (n = 2), and Penicillium from section Ramosa series Raistrickiorum (n = 1), were identified based on ITS Sanger sequencing. The dogs were initially treated with ketoconazole or itraconazole. Second-line treatment was initiated in three dogs, but after several relapses, the prognosis remained poor. Since the 1990s, 18 cases of Penicillium or Talaromyces infections in dogs have been described worldwide. This series of four reports brings new cases to those already reported in the literature, which are probably underestimated in the world.

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Talaromyces spp. infections in dogs from the Southern United States

Cited by 4 publications

References 24 publications

Hyphae, pseudohyphae, yeasts, spherules, spores, and more: A review on the morphology and pathology of fungal and oomycete infections in the skin of domestic animals

Hyphae, pseudohyphae, yeasts, spherules, spores, and more: A review on the morphology and pathology of fungal and oomycete infections in the skin of domestic animals

Cytomorphology of Deep Mycoses in Dogs and Cats

Penicillium and Talaromyces spp. emerging pathogens in dogs since 1990s

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