A Retrospective Study of Pythiosis in Domestic Animals in Northeastern Brazil

Souto, Erick Platiní Ferreira de; Kommers, Gláucia D.; Souza, Almir Pereira de; Neto, EG Miranda; Assis, D. M.; Riet-Correa, Franklin; Galiza, Glauco José Nogueira de; Dantas, Antônio Flávio Medeiros

doi:10.1016/j.jcpa.2022.05.002

Cited by 3 publications

(2 citation statements)

References 34 publications

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“…Feline pythiosis has been reported in the US Gulf States (in particular Louisiana), 149,150 Brazil [151][152][153][154] and Spain. 145 The authors have also diagnosed cases in Hong Kong.…”

Section: < Clinicalmentioning

confidence: 99%

“…✜ Geographic distribution Oomycetes causing feline IFLIs occur in tropical and subtropical regions, as well as some temperate regions such as California and Arizona. Feline pythiosis has been reported in the US Gulf States (in particular Louisi-ana), 149,150 Brazil 151-154 and Spain. 145 The authors have also diagnosed cases in Hong Kong.…”

Section: Diagnostic Approach For Selected Invasive Fungal and Fungal-...mentioning

confidence: 99%

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Invasive Fungal Infections and Oomycoses in Cats: 1. Diagnostic approach

Barrs,

Bęczkowski,

Talbot

et al. 2024

Journal of Feline Medicine and Surgery

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Clinical relevance: In contrast to superficial fungal infections, such as dermatophytosis, invasive fungal infections (IFIs) are characterised by penetration of tissues by fungal elements. Disease can spread locally within a region or can disseminate haematogenously or via the lymphatics. The environment is the most common reservoir of infection. Since fungal spores are airborne, indoor cats are also susceptible to IFIs. Some environmental fungi are ubiquitous and present globally, while others are endemic or hyperendemic within specific geographic regions. Zoonotic pathogens include Microsporum canis, Sporothrix schenckii and Sporothrix brasiliensis. Aim: In the first of a two-part article series, the approach to the investigation of feline IFIs and oomycoses is reviewed. As well as tips for diagnosis, and information on the ecological niche and distribution of fungal pathogens, the review covers clinical presentation of the most common IFIs, including cryptococcosis, histoplasmosis, blastomycosis, coccidioidomycosis, sporotrichosis, phaeohyphomycosis, aspergillosis and dermatophytic pseudomycetoma, as well as the oomycoses pythiosis, lagenidiosis and paralagenidiosis. In Part 2, the spectrum of activity, mechanisms of action, pharmacokinetic and pharmacodynamic properties and adverse effects of antifungal drugs are reviewed, and the treatment and prognosis for specific IFIs and oomycoses are discussed. Evidence base: The review draws on published evidence and the authors' combined expertise in feline medicine, mycology, dermatology, clinical pathology and anatomical pathology.

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“…Feline pythiosis has been reported in the US Gulf States (in particular Louisiana), 149,150 Brazil [151][152][153][154] and Spain. 145 The authors have also diagnosed cases in Hong Kong.…”

Section: < Clinicalmentioning

confidence: 99%

Section: Diagnostic Approach For Selected Invasive Fungal and Fungal-...mentioning

confidence: 99%

Invasive Fungal Infections and Oomycoses in Cats: 1. Diagnostic approach

Barrs,

Bęczkowski,

Talbot

et al. 2024

Journal of Feline Medicine and Surgery

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Esophageal and gastric pythiosis in a dog

Silva,

Martins,

Pereira

et al. 2024

Cienc. Rural

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Pythiosis is the disease caused by aquatic oomycetes of the genus Pythium. In dogs the typical course of the disease involves the gastrointestinal tract, characterized by transmural thickening of the stomach or intestines. However, infection by Pythium spp. has only rarely been recognized as a cause of esophagitis in dogs. Thus, the present reports a case of esophageal and gastric pythiosis in an eight-month-old female pit bull dog. The dog was attended at the hospital after two months presenting regurgitation and dyspnea. It was reported that the dog lived in an urban area and had no previous sanitary issues. At clinical examination it was noted that the dog presented crackling sounds at pulmonary auscultation. A support therapy accompanied by antibiotics has been employed; however, 22 days after hospitalization the clinical condition worsened, and the dog died. At necropsy, the wall of the distal segment of the esophagus and the cardia and part of the fundus of the stomach were expanded by a focal extensive irregular intramural annular mass. Additionally, there was a transmural esophageal fistula. At histology, the walls of the esophagus and stomach were extensively expanded by multifocal extensive areas of necrosis, associated with a pyogranulomatous infiltrate and abundant granulation tissue containing multiple negative images of hyphae that were highlighted by silver impregnation (Grocott). Furthermore, immunohistochemistry and PCR for P. insidiosum were both positive in samples of paraffin-embedded esophageal tissue.

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Cutaneous pythiosis in equines in the Amazon Biome

et al. 2023

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The study aimed to describe the clinicopathological aspects of 37 cases of pythiosis, 34 in horses and three in mules, from properties located in the Amazon biome of Pará, Brazil. The clinical signs observed in the animals were weakness, poor-to-regular nutritional status, pale mucous membranes, itching at the lesion site, and lameness when the limbs were affected. The lesions were located on the lips, nostrils, rib region, thoracic and abdominal walls, scapular, distal limbs, foreskin, perineum and udder. Macroscopically, ulcerative and granulation-tissue-like masses were observed, with fistulous tracts filled with yellowish and foul-smelling serosanguinous discharges. In the biopsy, it was possible to visualize white and firm areas with foci of yellowish necrotic material and hardened masses, called kunkers. The histopathological examination showed a pyogranulomatous inflammatory reaction with the presence of Pythium insidiosum hyphae, which were impregnated with black, confirming the diagnosis of pythiosis in equids in the Amazon biome, being the first report of the disease in mules in the region.

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A Retrospective Study of Pythiosis in Domestic Animals in Northeastern Brazil

Cited by 3 publications

References 34 publications

Invasive Fungal Infections and Oomycoses in Cats: 1. Diagnostic approach

Invasive Fungal Infections and Oomycoses in Cats: 1. Diagnostic approach

Esophageal and gastric pythiosis in a dog

Cutaneous pythiosis in equines in the Amazon Biome

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