Complejo granuloma eosinofílico

El complejo granuloma eosinofílico agrupa tres entidades clínico/histológicas denominadas granuloma colagenolítico, placa eosinofílica y úlcera indolente. En el presente artículo se describe su etiología y sus aspectos clínicos y terapéuticos.The eosinophilic granuloma complex is comprised of three clinical/histological entities: collagenolytic granuloma, eosinophilic plaque and indolent ulcer. In this article, its etiology, clinical aspects and therapy are discussed

Síndrome uveodermatológico en el perro

Se describe un caso de síndrome uveodermatológico en un perro Mastín español, macho, de 2 años. Los signos clínicos observados eran similares al síndrome de Vogt- Koyanagi-Harada humano y se caracterizaban por una uveitis asociada a una despigmentación y erosión cutánea y mucocutánea en cara, escroto, región perianal y almohadillas plantares. El estudio histopatológico reveló una dermatitis liquenoide, en la que predominaban los macrófagos. El tratamiento se basó en la administración oral de prednisona asociada a una terapia ocular tópica a base de atropina y corticosteroides. Al cabo de 8 meses las lesiones cutáneas y mucosas remitieron completamente.A case of uveodermatologic syndrome in a male 2 year old, Spanish Mastiff is described. The clinical signs found, namely uvezitis associated with cutaneus and mucocutaneous depigmentation and erosions of the face, scrotum, perianal region and footpads, were similar to those of the human Vogt-Koyanagi-Harada syndrome. The histopathological study showed a lichenoid dermatitis with prevalence of macrophages. The treatment encompassed the administration of prednisone per os and topical ocular therapy with corticosteroids associated with atropin e. After 8 months the cutaneous and mucosal Iesions had completely remitted

Fibrosarcoma esplénico primario en un perro

Se describe un caso de fibrosarcoma esplénico primario, con metástasis múltiples, en un perro mestizo macho, de ocho años de edad. Clínicamente el animal presentaba un cuadro de insuficiencia hepática. Mediante la necropsia y el estudio histológico se llegó al diagnóstico definitivo.A case of primary splenic fibrosarcoma, with multiple metastasis, in a male eight-year old mixed-breed dog is described. The animal showed clinical signs corresponding with an hepatic failure. Necropsy and a subsequent histopathologic study lead to the final diagnosis

Imagen ecográfica de la obstrucción biliar extrahepática en el perro : descripción de 7 casos

Se realizó un estudio ecográfico en siete perros que presentaban un cuadro de ictericia por obstrucción biliar extrahepática. Esta técnica permitió llegar al diagnóstico en seis de los casos. Se estudió la imagen ecográfica de la dilatación de las vías biliares intra y extrahepáticas, así como los signos asociados, tales como la presencia de una masa en el área pancreática, que pudiesen orientar sobre el origen de la obstrucción.An ultrasonographic examination was carried in out 7 dogs with icterus due to an extrahepatic biliary obstruction. This technique allowed the diagnosis in 6 of the dogs. The sonographic appearance of the dilated intra and extrahepatic biliary tree was assessed, as well as the associated lesions, such as the presence of a mass in the pancreatic area, which could guide towards the origin of the obstruction

Nota Corta: Endophytic fungi in healthy soybean leaves

SUMMARY Fungal endophytes were isolated from healthy cultivated soybean leaves at two growth stages (R2-R3 and R4-R5) during the growing season 1997/98. Samples were obtained from a segregating population (F 3 generation) cultivated at the experimental field of the Facultad de Ciencias Agrarias y Forestales, Universidad Nacional de La Plata, Buenos Aires, Argentina. Twelve genera of endophytic fungi were isolated and identified. In general, in both growth stages the same species were isolated and most of them did not show significant differences in their infection frequencies. Most of the fungi isolated are cited as soybean pathogens in different places of the world. The most commonly isolated endophytes included Alternaria alternata and Glomerella cingulata (= Colletotrichum gloeosporioides). Key words: endophytes, Glycine max Endophytes are fungi that form inapparent infections within leaves and stems of healthy plant

Examen radiológico del cuello del equino

La radiología de la columna cervical en el caballo es un método diagnóstico que cada vez con mayor incidencia está siendo utilizado para el diagnóstico de cuadros neurológicos que se manifiestan con ataxia. Además, está indicado en otros muchos procesos como son posiciones anormales del cuello, atrofia muscular, inflamaciones en la región cervical y dolor o rigidez del cuello. La técnica radiológica es sencilla pudiéndose incluso emplear, en las porciones craneal y media del cuello, aparatos portátiles que empleamos rutinariamente para el examen radiológico de las extremidades. No debemos olvidar que en muchas ocasiones el diagnóstico exacto del proceso va a requerir una mielografía mediante la introducción de medios de contraste en el canal cervical

Structural and ultrastructural hepatic changes in experimental canine leishmaniasis

Six 4 month-old beagles were inoculated with Leishmania donovani infantum, three of them intraperitoneally (Group A) and the other three intravenously (Group B). The animals from Group A were killed 109, 433 and 592 days after inoculation and animals from Group B 109, 171 and 334 after inoculation. The liver of each of them was examined by means of light and electron microscopy. The lesions observed in both groups were very similar, but developed more rapidly in Group B. A chronic hepatitis appeared due to infection, characterized by the presence of multiple intralobular granulomas and portal inflammatory infiltrates consisting of lymphocytes, plasmocytes and macrophages with a variable number of amastigotes. The Kupffer cells were hyperplastic and contained parasites in their cytoplasm. Gradually the hepatocytes developed a progressive cellular swelling. which during the end-stages of the process showed itself with severe nuclear degeneration, disintegration of cytoplasmic organelles, enlargement of the cytoplasmic matrix and disruption of the plasma membranes, leading to cytolysis

Amyloidosis in adrenal glands of hamsters experimentally infected with Leishmania infantum

Thirty 10-week-old hamsters were inoculated intraperitoneally with Leishmania infantum amastigotes and were serially killed after 15,30,45,60,75 and 89-90 days. The adrenal glands of each of them were examined by means of light and electron microscopy. The cortex and medulla of the adrenal gland showed a progressive deposition of amyloid, selectively identified by both optical and ultrastructural techniques. It has been suggested that adrenal amyloidosis during visceral leishmaniasis is directly related to a stimulation of the phagocitary mononuclear system due to the persistence of the antigenic stimulation of the parasite. In addition to these deposits, the presence of inflammatory infiltrates containing lymphocytes, plasmocytes and macrophages with leishmanias confirmed the establishment of leishmaniasis. The deposition of the amyloid fibrils finally leads to the partial destruction of the adrenal parenchym