Demodex phylloides infection in swine reared in a peri-urban family farm located on the outskirts of the Metropolitan Region of São Paulo, Brazil

Bersano, Josete Garcia; Mendes, Márcia Cristina; Duarte, Fernanda Calvo; Fava, Cláudia Del; Oliveira, S. M.; Filha, E. Spósito; Pinheiro, Eliana Scarcelli; Nassar, Alessandra Figueiredo de Castro; Bilynskyj, Maria Cristina de Vasconcellos; Ogata, Renato Akio; Sampaio, Paula Costa Pinheiro; Genovez, Margareth Élide

doi:10.1016/j.vetpar.2016.06.014

Cited by 4 publications

(1 citation statement)

References 10 publications

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“…They are highly host specific, and unlike other mites such as house dust mites, they are obligate commensals. Demodex mites identified to date include, among others, Demodex folliculorum and Demodex brevis in humans, 1 Demodex phylloides in pigs, 2 Demodex canis in dogs, 3 Demodex bovis in cattle, 4 Demodex equi in horses, 5 in rodents such as mice which carry Demodex musculi , 6–8 Demodex cati in cats 9 and Demodex caprae in goats 10…”

Section: Introductionmentioning

confidence: 99%

Demodex: a skin resident in man and his best friend

Foley

Gatault

Powell

2020

Acad Dermatol Venereol

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Demodex mites are microscopic arachnids found in the normal skin of many mammals. In humans, it is well established that Demodex mite density is higher in patients with the skin condition rosacea, and treatment with acaricidal agents is effective in resolving symptoms. However, pathophysiology of rosacea is complex and multifactorial. In dogs, demodicosis is a significant veterinary issue, particularly the generalized form of the disease which can be fatal if untreated. In each species, clinical and molecular studies have shown that the host’s immunological interactions with Demodex mites are an important, but not fully understood, aspect of how Demodex can live in the skin either as a harmless commensal organism or as a pathogenic agent. This review outlines the role of Demodex mites in humans and dogs, considering morphology, prevalence, symptoms, diagnosis, histology treatment and pathogenesis.

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Section: Introductionmentioning

confidence: 99%

Demodex: a skin resident in man and his best friend

Foley

Gatault

Powell

2020

Acad Dermatol Venereol

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Training of Veterinary and Sanitary Professionals for the Sector and Region Sustainable Development

Ivashova

Chudnova

Chvalun

et al. 2022

Advances in Management, Business and Technological Systems

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Demodicosis in a Kunekune pig and molecular characterisation of porcine demodectic mites involved: a case report

Schwarz,

Herb,

Dürlinger

et al. 2024

Parasites Vectors

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Background In January 2021, a female 1-year-old Kunekune was presented at the University Clinic for Swine with severe reduction of the field of vision resulting in prolonged reaction time when targeting barriers, due to moderate to severe thickening of the skin around both orbits also affecting the eyelids. Methods Clinical examination revealed skin hyperplasia, nodular enlargement of the skin pores of the axillar and inguinal region. Ophthalmologists decided to remove parts of the thickened periocular skin, followed by histopathological examination. Results Once large amounts of demodectic mites were detected by histopathology, demodicosis could be diagnosed and treatment of the pig was started using sarolaner. Morphological and molecular analyses were performed. Histopathological and parasitological exams led to the aetiological diagnosis of demodicosis in the affected Kunekune pig. Severe skin lesions were revealed to be the consequence of an infestation with Demodex sp. Morphological analyses confirmed the involvement of D. phylloides. Molecular characterization indicated a Demodex species closely related to mites documented in wild boar - most probably D. phylloides for which no explicit sequences are available in GenBank yet. Treatment with sarolaner (2.6 mg/kg) resulted in a substantial regression of skin lesions, already detectable 1 month after first treatment. Conclusions Demodicosis is a very rare disease in pigs that is most probably related to an impaired immune response to the mites. Demodectic mange should be included in the list of differential diagnoses in cases of periocular alterations of the skin of pigs. Graphical Abstract

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Demodex phylloides infection in swine reared in a peri-urban family farm located on the outskirts of the Metropolitan Region of São Paulo, Brazil

Cited by 4 publications

References 10 publications

Demodex: a skin resident in man and his best friend

Demodex: a skin resident in man and his best friend

Training of Veterinary and Sanitary Professionals for the Sector and Region Sustainable Development

Demodicosis in a Kunekune pig and molecular characterisation of porcine demodectic mites involved: a case report

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