Sialolitíase em equino: relato de caso / Sialolithiasis in equine: case report

Sialolitíase é uma afecção que afeta as glândulas salivares ou seus ductos, caracterizada pela presença de estruturas calcificadas, denominadas de sialolitos, com crescimento lento e gradual, geralmente assintomático, dificultando ou impedindo o fluxo normal de saliva. Devido à ausência de relatos na literatura nacional, descreve-se o caso de uma égua de 15 anos, que apresentava um sialolito de 13cm no ducto parotídico havia mais de dois anos, próximo à crista facial. O diagnóstico foi realizado por meio do exame clínico: visualização do aumento de volume, palpação do sialolito, avaliação odontológica; e de exames complementares: radiografia e ultrassonografia. Optou-se pelo tratamento cirúrgico, através do acesso percutâneo, pois é o mais indicado para cálculos grandes, realizando-se sutura do ducto de Stenon, sem presença de fístulas no pós-operatório. Foi de extrema importância a avaliação e os cuidados odontológicos durante a realização do procedimento, pois as pontas dentárias facilitam a formação dos cálculos.(AU)

Sialolithiasis is a condition that affects the salivary glands or their ducts, characterized by the presence of calcified structures, called sialolites, with slow and gradual growth, usually asymptomatic, hindering or impeding the normal flow of saliva. Due to the absence of reports in the national literature, the case of a 15-year-old mare who had a 13cm sialolite in the parotid duct near the face ridge for more than 2 years is described. The diagnosis was made through clinical examination: with visualization and palpation of the sialolite, dental evaluation; and complementary exams: radiography and ultrasonography. We chose surgical treatment through percutaneous access, which is the most appropriate for large stones, and Stenon's duct suture was performed, without postoperative fistulas. The assessment and dental care during the procedure was extremely important, since the dental tips facilitate the formation of the stones.(AU)

Ecotoxicological characterization of tannery wastewater in Dhaka, Bangladesh.

Tanning industries are one of the main economic activities in Bangladesh. It has been well documented that wastewater discharged from tanneries without appropriate treatment results in detrimental effects on the ecosystem. No ecotoxicity evaluation of any aquatic environment in Bangladesh has been conducted so far. In this study, a battery of toxicity bioassays and chemical analysis were carried out from water samples obtained from three sampling points: upstream from discharging site on River Buriganga (S1), raw wastewater effluent (S2), and downstream the discharging sluice gate (S3), in the Hazaribagh tannery area of Dhaka City, Bangladesh. While S1 and S3 water samples did not show significant toxicity in the bioassays tested, S2 exhibited high acute toxicity to the bacterium Vibrio fischeri (15-min Microtox® test, EC50 = 9.8%), the higher plant Lactuca sativa (5-day root elongation inhibition test, EC50 = 14.2%), and the microcrustacean Daphnia magna (24-hour mobility test, EC50 = 31.5%). The results suggested that the raw wastewater effluent had detrimental effects on broad spectrum of organisms in the aquatic ecosystem and bacterium was the most sensitive. The chemical analysis revealed that sample S2 contained an extremely high concentration of chromium (47 g l-1). Additionally, microbiological analysis indicated that the sampling area is impacted by fecal pollution, increasing the environmental health risk for its inhabitants.