ABSTRACT
Cryptosporidium spp is a common intestinal pathogen of animals and humans. It may have an important economic impact on farms and cause potentially zoonotic infections. Fecal specimens were collected from 331 domestic animals (81 beef cattle, 50 sheep, 100 pigs and 100 dogs) and checked for the presence of Cryptosporidium oocysts by way of Ziehl Neelsen and auramine staining methods. An overall positivity rate of 7.5 percent (25/331) was found, with rates of 10 percent (10/100) among the dogs and 18.5 percent (15/81) among the beef cattle. The feces of sheep and pigs tested negative. In beef cattle, 15 and 12 positive samples were detected by the auramine and Ziehl Neelsen staining techniques, respectively, with no statistically significant difference between the two methods. In dogs, the same number of positive samples was found by both techniques.
Subject(s)
Animals , Male , Female , Cattle , Dogs , Benzophenoneidum , Staining and Labeling/methods , Cryptosporidiosis/diagnosis , Cryptosporidiosis/epidemiology , Cryptosporidium/isolation & purification , Feces/parasitology , Coloring Agents , Brazil , Cryptosporidiosis/parasitology , Parasite Egg Count/methods , Swine , Bacteriological Techniques/methodsABSTRACT
O presente estudo objetivou avaliar antígenos excretórios/ secretórios (Ag E/S) e somáticos (Ag S) de Fasciola hepatica, anticorpos específicos e demonstrar a presença de sítios reativos em corte histológico do parasito adulto pela técnica de imunoistoquímica. A resposta imune foi observada pela reação intensa nas células que circundam a ventosa ventral do parasito. A técnica de imunoistoquímica é sensível e de fácil execução na detecção de sítios antigênicos em cortes histológicos de Fasciola hepatica.
The aim of the present study was to assess excretory-secretory antigens and somatic antigens of Fasciola hepatica, specific antibodies, and to identify reactive sites in histological sections of adult parasites by means of immunohistochemistry. The immune response was observed through the intense reaction of cells that surround the ventral sucker of Fasciola hepatica. lmmunohistochemistry is a sensitive and easy-to-use method for detecting antigenic sites in histological sections of this parasite.