Browsing by Subject "Sarcoptic mange"

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    Evaluation of the prevalence of sarcoptic mange in slaughtered fattening pigs in southeastern Spain
    (Elsevier, 1998-04-15) Alonso de Vega, Francisco; Mendez de Vigo, J.; Ortiz Sánchez, Juana; Martínez-Carrasco Pleite, Carlos; Albaladejo Serrano, Antonio; Ruiz de Ybáñez Carnero, María del Rocío; Sanidad Animal
    In this study the prevalence of sarcoptic mange in fattening pigs in Murcia, southeastern Spain was investigated. Results showed that 37% of the 1318 slaughtered pigs examined were positive for Sarcoptes scabiei var. suis. Skin lesions potentially attributable to this mite were present in 92.80% of animals, but the parasite could be detected in only 38.60% of them. The condition of the ear cleanrdirty. was not a defining characteristic for the diagnosis of this swine disease. A sucrose flotation–concentration technique was more effective than direct microscopy in finding the mite in ear scrapings
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    Histopathology, microbiology and the inflammatory process associated with Sarcoptes scabiei infection in the Iberian ibex, Capra pyrenaica
    (Springer Nature, 2017-12-04) Espinosa, José; Ráez-Bravo, Arián; López-Olvera, Jorge R.; Pérez, Jesús M.; Lavín, Santiago; Tvarijonaviciute, Asta; Cano-Manuel, Francisco J.; Fandos, Paulino; Soriguer, Ramón C.; Granados, José Enrique; Romero García, Diego; Velarde, Roser; Ciencias Sociosanitarias
    Background: Sarcoptic mange has been identified as the most significant infectious disease affecting the Iberian ibex (Capra pyrenaica). Despite several studies on the effects of mange on ibex, the pathological and clinical picture derived from sarcoptic mange infestation is still poorly understood. To further knowledge of sarcoptic mange pathology, samples from ibex were evaluated from histological, microbiological and serological perspectives. Methods: Samples of skin, non-dermal tissues and blood were collected from 54 ibex (25 experimentally infected, 15 naturally infected and 14 healthy). Skin biopsies were examined at different stages of the disease for quantitative cellular, structural and vascular changes. Sixteen different non-dermal tissues of each ibex were taken for histological study. Acetylcholinesterase and serum amyloid A protein levels were evaluated from blood samples from ibex with different lesional grade. Samples of mangy skin, suppurative lesions and internal organs were characterized microbiologically by culture. Bacterial colonies were identified by a desorption/ionization time-of-flight mass spectrometry system (MALDI TOF/TOF). Results: The histological study of the skin lesions revealed serious acanthosis, hyperkeratosis, rete ridges, spongiotic oedema, serocellular and eosinophilic crusts, exocytosis foci, apoptotic cells and sebaceous gland hyperplasia. The cellular response in the dermis was consistent with type I and type IV hypersensitivity responses. The most prominent histological findings in non-dermal tissues were lymphoid hyperplasia, leukocytosis, congestion and the presence of amyloid deposits. The increase in serum concentrations of acetylcholinesterase and amyloid A protein correlated positively with the establishment of the inflammatory response in mangy skin and the presence of systemic amyloidosis. A wide variety of bacterial agents were isolated and the simultaneous presence of these in mangy skin, lymph nodes and internal organs such as lungs, liver, spleen and kidney was compatible with a septicaemic pattern of infection. Conclusions: The alteration of biomarkers of inflammation and its implication in the pathogenesis of the disease and development of lesions in non-dermal tissues and septicaemic processes are serious conditioners for the survival of the mangy ibex. This severe clinical picture could be an important factor when considering the decision to eliminate animals that exceed a certain disease threshold from a population.