Gabriela Riet-Correa

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Peripheral nerve ultrastructure was assessed after single or multiple local injections of the intercalating dye ethidium bromide. Thirty-four adult Wistar rats of both sexes were divided into five groups and maintained in a controlled environment with rat chow and water ad libitum throughout the experiment. The experimental animals were injected with 1(More)
Poisoning by Indigofera lespedezioides is reported in horses in the state of Roraima, northern Brazil. The main clinical signs are anorexia, sleepiness, unsteady gait, severe ataxia, weakness, stumbling, and progressive weight loss. To induce the disease experimentally, a 7-year-old horse was introduced in a small paddock invaded by the plant. The first(More)
Tetrapterys spp. have been reported as a cause of cardiac fibrosis, status spongiosus of the nervous system, and abortion. To study the intoxication by Tetrapterys multiglandulosa, 24 sheep were divided into 4 experimental groups of 4 sheep each and 1 control group. Groups 1 to 3, respectively, received 1, 1.5, and 3 g/kg body weight of the dry plant daily,(More)
The incidence of seasonal dermatitis was studied in a Hampshire Down flock on a farm in southern Brazil. Epidemiological data, clinical signs and macroscopic pathology were obtained by visiting the farm. Histological lesions were studied in skin biopsies of affected sheep. Biting insects were collected from January to April 2005 in an attempt to identify(More)
Progressive wasting was observed in 4/1000 steers grazing Brachiaria decumbens pastures. Yellow liver and whitish hard nodules in the mesenteric and hepatic lymph nodes were observed at necropsy. At histologic examination multifocal accumulation of foamy macrophages were in the livers, spleens, lmph nodes, and intestinal submucosa. It is suggested that the(More)
In the Amazon region of northern Brazil, Panicum maximum cultivars Mombaça, Tanzânia, and Massai cause severe colic and death in horses and mules. The disease occurs in the rainy season, when sprouting pastures are grazed by equidae. In the 8 separate disease outbreaks studied, a total of 52 out of 153 equidae were affected, including 19 that died (10 mules(More)
Ipomoea carnea, a swainsonine containing plant, is known to cause a neurologic disease in grazing livestock in Brazil and other parts of the world. To better understand the relative toxicity and nutritional content of I. carnea we investigated swainsonine, calystegine, and crude protein concentrations in leaves of I. carnea on a monthly basis for one year(More)
We describe herein herpesvirus-associated genital lesions in a Guiana dolphin ( Sotalia guianensis) from the northern Brazilian coast. Papillary lesions on the vulva, with epithelial hyperplasia, swollen keratinocytes, and intranuclear inclusions, were positive for a herpesvirus ( Gammaherpesvirinae subfamily).
Tephrosia cinerea has been associated with ascites and liver fibrosis in sheep in Brazil. The dried plant was fed ad libitum to three sheep for 55-80 days. Three additional sheep were used as controls. All the treated sheep presented with hypoalbuminemia and increased γ-glutamyltransferase and aspartate aminotransferase activities. Anorexia, apathy, rough(More)
Strongyloides spp. are intestinal parasites that affect several animal species. Four species of the genus have been reported in domestic cats: S. felis, S. planiceps, S.stercoralis and S. tumefaciens. Reports describing infection by these nematodes in domestic cats in Brazil are scarce. This study aimed to describe the pathological features of Strongyloides(More)
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