Infecção disseminada por Chlorella sp. em um ovino

Lima, Emmanuela Ferreira de; Maia, Lisanka Ângelo; Nascimento, Eduardo; Dantas, Antônio Flávio Medeiros; Riet-Correa, Franklin

doi:10.1590/0103-8478cr20131270

Cited by 2 publications

(7 citation statements)

References 11 publications

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“…Although little information is available about the pathogenesis of chlorellosis, it is thought that the infection occurs as a result of the consumption of stagnant water, grass from areas contaminated by sewage, 14 pastures irrigated via canals containing algae, 11 or pastures irrigated with treated effluent from poultry-processing plants. 19 The occurrence of lesions in the gut, lymphatic and blood vessels, and mesenteric lymph nodes suggests an oral route of infection followed by dissemination to other organs.…”

Section: Chlorellosis (Green Algae Infections)mentioning

confidence: 99%

“…2D), with a thick periodic acid–Schiff (PAS)-positive capsule. 11,14,19,22 Unlike Prototheca spp., Chlorella spp. organisms contain chloroplasts and starch bodies, which appear as abundant PAS-positive cytoplasmic granules that can also be visualized by electron microscopy.…”

Section: Chlorellosis (Green Algae Infections)mentioning

confidence: 99%

“…have been reported to cause focal cutaneous lesions secondary to wounds in humans 10 and in a gazelle, 6 lymphadenitis and peritonitis in cattle, 7,23 enteric infection in a dromedary, 13 and disseminated infection in a dog. 21 In sheep, chlorellosis has been reported as an incidental finding in slaughterhouses affecting the liver and lymph nodes 4,27,28 or in outbreaks affecting several animals, causing systemic infection associated with progressive weight loss, 11,14,19,22 diarrhea, 19 or ascites. 11,14,19 To date, no cases of chlorellosis have been reported in goats; chlorellosis may occur in very low frequency in goats, or may be of no clinical significance.…”

Section: Chlorellosis (Green Algae Infections)mentioning

confidence: 99%

“…2,12,22 Algal infections have been reported in domestic animals, including goats and sheep. 3,14,15,19,22 Prototheca spp. and Chlorella spp.…”

Section: Introductionmentioning

confidence: 99%

“…2,10,14,15,20,22 The recent increase in the number of cases in goats and sheep may therefore be associated with environmental and/or climatic changes promoted by anthropogenic activities. 2,3,11,14,15,19,22 It is also possible that because of the sporadic characteristic of the diseases, which usually affect only a few animals at a time, at least some cases in goats and sheep go undiagnosed, especially in areas of extensive goat and sheep production. We review here the main features of protothecosis and chlorellosis in goats and sheep, which may contribute to the diagnosis of these diseases in these species.…”

Section: Introductionmentioning

confidence: 99%

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Protothecosis and chlorellosis in sheep and goats: a review

2020

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Protothecosis and chlorellosis are sporadic algal diseases that can affect small ruminants. In goats, protothecosis is primarily associated with lesions in the nose and should be included in the differential diagnosis of causes of rhinitis. In sheep, chlorellosis causes typical green granulomatous lesions in various organs. Outbreaks of chlorellosis have been reported in sheep consuming stagnant water, grass from sewage-contaminated areas, and pastures watered by irrigation canals or by effluents from poultry-processing plants. Prototheca and Chlorella are widespread in the environment, and environmental and climatic changes promoted by anthropogenic activities may have increased the frequency of diseases produced by them. The diagnosis of these diseases must be based on gross, microscopic, and ultrastructural lesions, coupled with detection of the agent by immunohistochemical-, molecular-, and/or culture-based methods.

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Section: Chlorellosis (Green Algae Infections)mentioning

confidence: 99%