Adenomatose pulmonar ("jaagsiekte") em ovino no Rio Grande de Sul

Driemeier, David; Moojen, Valeria; Faccini, Giani S.; Oliveira, Rosemari Teresinha de

doi:10.1590/s0103-84781998000100026

Cited by 5 publications

(4 citation statements)

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“…Viral diseases, such as pulmonary adenomatosis and Maedi-Visna, cause chronic respiratory distress and progressive respiratory insufficiency in sheep. 4,10 Bacterial or viral pneumonia could also induce respiratory insufficiency, and altered leukograms could reflect such infection. 13 However, the hematologic values and the bacterial cultures from specimens of the experimental sheep were within laboratory reference range and devoid of growth, respectively.…”

Section: Discussionmentioning

confidence: 99%

Pneumotoxicosis in Sheep Caused by Ingestion of Trema Micrantha

Wouters

Watanabe

et al. 2013

Vet Pathol

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Trema micrantha, a fast-growing tree distributed throughout the Americas, produces palatable leaves that have been associated with hepatic necrosis and acute death when consumed by livestock. This report describes fatal pulmonary disease of sheep triggered by consumption of Trema micrantha. Affected sheep had severe progressive dyspnea for a few days before death. Subcutaneous and mediastinal emphysema, reddened lungs, interalveolar septal thickening, and diffuse type II pneumocyte proliferation were the main pathological findings. After ingesting 77.5 and 102.5 g/kg (divided in 3 doses, at 30-day intervals) of T. micrantha leaves, 2 additional sheep developed the same condition. These findings indicate that T. micrantha toxicosis should be considered in the differential diagnosis of ovine respiratory disease.

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Section: Discussionmentioning

confidence: 99%

Pneumotoxicosis in Sheep Caused by Ingestion of Trema Micrantha

Wouters

Watanabe

et al. 2013

Vet Pathol

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“…These finding are important, considering that many veterinarians in northeastern Brazil misdiagnosed the disease as enzootic ethmoidal tumor and that the bronchiolar and alveolar proliferative lesions were attributed to pulmonary adenomatosis, a disease rarely reported from Brazil. 8 Conidiobolomycosis by C. coronatus is an endemic disease of sheep in the semiarid region of northeastern Brazil. In most cases, the infection disseminates from the nasal lesions to other organs, including brain, lymph nodes, lung, kidney, heart, and gallbladder.…”

Section: Discussionmentioning

confidence: 99%

Conidiobolomycosis in Sheep in Brazil

et al. 2007

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Abstract. Conidiobolomycosis is reported in the state of Piauí, in the semiarid region of northeastern Brazil. Affected sheep had depression, weight loss, serous or mucohemorrhagic nasal discharge, and cranium-facial asymmetry from exophthalmos of 1 eye, generally with increased volume of the eyeball, keratitis, and corneal ulceration. At necropsy of 60 sheep, friable masses were observed in the posterior region of the nasal cavity, often destroying the ethmoturbinate bones. Frequently, the lesions invaded the nasal sinuses, cribiform plate, orbit, and brain. The masses were irregular, granular with moist surfaces, and soft and friable with white, yellow, or tan coloration. Dissemination of the lesion to lungs was observed in 27 sheep, to the brain in 26, to lymph nodes in 3, to the kidney in 2, and to the gallbladder and heart in 1. The microscopic examination showed granulomatous inflammation composed of central necrosis surrounded by lymphocytes, epithelioid and giant cells, and fibrous tissue. In all lesions, negatively stained structures representing hyphae were surrounded by Splendore-Hoeppli material. Coagulative necrosis, thrombosis, and vasculitis were also observed. Grocott methenamine silver stain showed 8-30-mm-thick hyphae, rarely septate or ramified, irregular in shape, and with black contoured wall, sometimes with bulbous dilatation in the extremities. On electron microscopy, the hyphae had a thick double wall surrounded by cellular remnants and an inflammatory exudate. Conidiobolus coronatus was isolated from the lesions of 6 sheep. Conidiobolomycosis is an important disease of sheep in the state of Piauí, and other regions of northeastern Brazil.

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“…Estudos experimentais e naturais da doença sugerem o envolvimento de um retrovírus na transmissão e crescimento do tumor (Svara et al 2006). Casos de adenomatose pulmonar, causada pelo mesmo vírus são descritos no Rio Grande do Sul (Driemeier et al 1998). Carcinoma epidermóide.…”

Section: Neoplasiasunclassified