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| Machado,A.A.; Américo-Pinheiro,J.H.P.; Carraschi,S.P.; Cruz,C.; Machado-Neto,J.G.. |
| RESUMO O objetivo deste estudo foi classificar o antibiótico Terramicina(r) de acordo com a toxicidade aguda e o risco de intoxicação ambiental para Oreochromis niloticus, Daphnia magna e Lemna minor, com base no seu ingrediente ativo oxitetraciclina (OTC). Além disso, observou-se a ocorrência de sinais de intoxicação aguda em peixes e o efeito da diluição do antibiótico sobre as variáveis de qualidade de água. Alevinos, neonatos e frondes foram expostos a concentrações de OTC. De acordo com os resultados dos testes de toxicidade aguda, a Terramicina(r) foi classificada pela toxicidade aguda e pelo risco de intoxicação ambiental. Para O. niloticus, a CL(I)50; 48h calculada foi de 6,92 mg L-1, para D. magna a CE(I)50; 48h foi de 0,17mg.L-1, enquanto para L.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Peixe; Antibiótico; Ecotoxicidade; Organismos aquáticos; Macrófita. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352016000501244 |
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| Slavov,S.N.; Vilar,F.C.; Wagatsuma,V.M.D.; Santana,R.C.; Machado,A.A.; Fonseca,B.A.L. da; Kashima,S.; Covas,D.T.. |
| The emergence of ganciclovir (GCV) resistance during the treatment of human cytomegalovirus (HCMV) infection is a serious clinical challenge, and is associated with high morbidity and mortality. In this case report, we describe the emergence of two consecutive mutations (A594V and L595W) related to GCV resistance in a patient with HCMV retinitis and long-term HIV progression after approximately 240 days of GCV use. Following the diagnosis of retinitis, the introduction of GCV did not result in viral load reduction. The detected mutations appeared late in the treatment, and we propose that other factors (high initial HCMV load, previous GCV exposure, low CD4+ cell count), in addition to the presence of resistance mutations, may have contributed to the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Human cytomegalovirus; HCMV; Ganciclovir; Resistance; AIDS. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2015000900777 |
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| Santana,R.C.; Machado,A.A.; Martinelli,A.L.C.; Jordão,A.A.; Ramalho,L.N.Z.; Vannucchi,H.. |
| Subjects with chronic liver disease are susceptible to hypovitaminosis A due to several factors. Therefore, identifying patients with vitamin deficiency and a requirement for vitamin supplementation is important. Most studies assessing vitamin A in the context of hepatic disorders are conducted using cirrhotic patients. A cross-sectional study was conducted in 43 non-cirrhotic patients with chronic hepatitis C to evaluate markers of vitamin A status represented by serum retinol, liver retinol, and serum retinol-binding protein levels. We also performed the relative dose-response test, which provides an indirect estimate of hepatic vitamin A reserves. These vitamin A indicators were assessed according to the stage of liver fibrosis using the METAVIR score... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vitamin A; Hepatitis C; Retinol; Retinol binding protein; Liver fibrosis. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2016000100702 |
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