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1.
Arq. bras. med. vet. zootec ; 64(6): 1465-1470, Dec. 2012. tab
Article in Portuguese | LILACS | ID: lil-660211

ABSTRACT

Leishmaniose é uma enfermidade multissistêmica cujas manifestações clínicas são extremamente variáveis. Em cães sinais clínicos oftálmicos são relativamente frequentes, ainda que outros sinais sistêmicos não sejam identificados. Atualmente, o diagnóstico da doença baseia-se em métodos parasitológicos, sorológicos e moleculares, mas, até o momento, a identificação de formas amastigotas desse parasito em esfregaços feitos a partir de suabes conjuntivais não é empregada rotineiramente. Valendo-se de cães sorologicamente positivos para leishmaniose, portadores (G1) ou não (G2) de alterações oftálmicas, este estudo avaliou a viabilidade do esfregaço a partir de suabe conjuntival como método de diagnóstico para a enfermidade. O exame suprarreferido foi positivo em 60% dos animais do G1 e 38,1% do G2, no entanto não houve diferença estatisticamente significativa em relação à positividade nos dois grupos (P=0,2167). Os dados apontam para uma tendência de os cães com leishmaniose e com sinais oftálmicos serem positivos ao exame parasitológico de esfregaço a partir de suabe conjuntival, podendo esse método ser útil no diagnóstico parasitológico da leishmaniose canina.


Leishmaniasisis is a multisystemic disease with varying clinical presentations. In dogs, alterations in the eyes are commonly observed even in animals with no systemic signs. The diagnosis of leishmaniasis is currently based on parasitological, serological and molecular methods, although the identification of amastigote forms of this parasite in conjunctival swabs is not a routine technique in clinical practice. Serologically positive dogs for leishmaniasis presenting (G1) or not (G2) ocular alterations were enrolled in this study to evaluate the conjunctival swab as a method for the diagnosis of this disease. The parasitological evaluation of the swabs disclosed 60% positivity for dogs in group 1, whereas only 38.1% of dogs in group 2 were positive. However, no significant difference was documented between the two groups (P=0.2167). Our data suggest a tendency for dogs with ocular signs to be tested positive in the conjunctival swab exam, thus, this method is useful in the diagnosis of canine leishmaniasis.


Subject(s)
Animals , Dogs , Leishmaniasis/parasitology , Leishmaniasis/veterinary , Eye Diseases/diagnosis , Conjunctiva/cytology , Conjunctiva/parasitology , Symptom Assessment/veterinary , Lymph Nodes/parasitology , Eye Diseases/veterinary
2.
Int. j. morphol ; 26(1): 137-141, 2008. ilus, tab
Article in English | LILACS | ID: lil-558587

ABSTRACT

The histological and morphometric differences in some parts of the gastrointestinal tracts of rat, bat and pangolin have been well established. This investigation aims at comparatively elucidating any adaptational changes the ileum of the three mammals must have adopted to meet its dietary requirements and also cope with their morphological differences. The investigation was carried out using ten rats, ten bats and ten pangolins of both sexes. The animals were slightly anaesthetized under chloroform inhalation. The intestines were harvested and the ileum excised and fixed in 10 percent formol saline. The tissues were processed for light microscopic study. The following stains were employed: Haematoxylin and eosin (H & E), Van Gieson and Verhoeff's haematoxylin elastic tissue stain. Stained slides were also analysed morphometrically. The results revealed microstructural modifications which characterized the mucosa as well as the pattern of distribution of the conjuntive tissue fibers in the ileum of the three mammals. These modifications are means of successfully coping with their respective diets and morphological differences.


Las diferencias histológicas y morfométricas en algunas partes del tubo digestivo de ratas, murciélagos y pangolines han sido bien establecidos. Esta investigación tiene por objeto aclarar comparativamente cualquier cambio de adaptación del íleon de los tres mamíferos que hayan adoptado para satisfacer sus necesidades dietéticas y también hacer frente a sus diferencias morfológicas. La investigación se llevó a cabo usando 10 ratas, 10 murciélagos y 10 pangolines, de ambos sexos. Los animales fueron ligeramente anestesiados bajo inhalación de cloroformo. Los intestinos fueron expuestos, el íleon extirpado y fijado en formol salino al 10 por ciento. Los tejidos fueron procesados para su estudio por microscopía de luz. Los siguientes tinciones fueron empleadas: Hematoxilina y eosina (H & E), Van Gieson y tinción de hematoxilina para tejidos elásticos de Verhoeff. Los cortes teñidos también se analizaron morfométricamente. Los resultados revelaron modificaciones microestructurales características de la mucosa, así como el patrón de distribución de las fibras de tejido conjuntivo en el íleon de los tres mamíferos. Estas modificaciones son el medio para entender sus diferencias en la dieta y morfología respectivamente.


Subject(s)
Animals , Rats , Ileum/ultrastructure , Chiroptera/anatomy & histology , Rats/anatomy & histology , Connective Tissue/ultrastructure , Xenarthra/anatomy & histology , Adaptation, Physiological , Chiroptera/physiology , Rats/physiology , Xenarthra/physiology
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