Navegando por Autor "MAGNO, Ismaelino Mauro Nunes"

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Acesso aberto (Open Access)
Avaliação dos marcadores de injúria miocárdica induzida pela exposição ao metilmercúrio em modelos experimentais de primatas do novo mundo (Cebus Apella)
(Universidade Federal do Pará, 2009-07-10) MAGNO, Ismaelino Mauro Nunes; QUARESMA, Juarez Antônio Simões; http://lattes.cnpq.br/3350166863853054
This study aimed to examine effects of the mechanisms of injury producing cellular damage in the heart of the monkey Cebus apella exposed for 120 consecutive days, with daily dose of 1.5 methyl Hg, by changes detected in biochemical markers of myocardial injury CK - MB, the histopathological findings as well as the technique of immunolabeling of apoptotic cells. For that, we related to the serum profiles of CK-MB, total CK, AST, ALT, urea, creatinine and total bilirubin with the histopathological and immunohistochemical findings in the involvement of the heart muscle during exposure to methyl Hg, and compared with a control group. The method used for determination and analysis of the serum and the determination of mercury in blood was the kinetic ultraviolet; atomic absorption spectroscopy, respectively; for histopathological analysis used the technique of Hematoxylin and Eosin; and for detection of apoptotic profiles the method APOPTAG. Was obtained information that correlate the biochemical changes, histopathologic profiles and apoptotic mechanism of cardiac involvement in three animals exposed to methyl Hg, when compared with control group. Among all substances of biochemical analysis were found that there was only marked increase of serum CK-MB enzyme, whereas, the histopathologic analysis showed reversible cell damage by accumulation of water in the three organs examined (heart, liver and kidney). It is also the observation of a clear labeling of apoptotic cells in heart, liver and kidney tissues of exposed animals, showing a higher number of positive cells in cells of renal tubules. Emphasizing that there was no inflammatory infiltrate around these tissues described and analyzed, and was there absence of such lesions in tissues of three control animals. It was concluded that the enzyme CK-MB, the hydropic degeneration and the mechanism of apoptosis may be indicators of myocardial injury in acute exposure to methyl Hg whose pathogenesis could be related to mitochondrial decompensation because massive commitment of the Na + / K + and Ca + + pumps. Requiring a greater intake of experimental studies that can clarify the exact pathogenesis, the mechanism of cellular injury and aggression in individuals exposed to toxic doses of methyl Hg.
Acesso aberto (Open Access)
Perfil do marcador bioquímico de lesão miocárdica creatinoquinase-MB (CK-MB) em pacientes com leptospirose atendidos na cidade de Belém-Pa
(Universidade Federal do Pará, 2003-12-16) MAGNO, Ismaelino Mauro Nunes; COSTA, Eduardo Augusto da Silva; http://lattes.cnpq.br/8367972950545772
It was examined the behaviour of enzyme creatine kinase-MB in patients with leptospirosis inside University João Barros Barreto Hospital in Belém, in the State of Pará on the period of January 2002 to July 2003 through a study on which were characterized the clinics symptoms and the profile of biochemical mark biochemical of myocardial injury. It was determined serum profiles of creatine kinase-MB; creatinine kinase, urea, creatinina, potassium, aspartataminetransferase and alanineaminetranferase related with the clinics symptoms of the cardiac muscles inflammable process. The results show that in spite of the great part of the patient be symptomatic, only 12,76% show elevation serum from creatine kinase-MB. So, the referred biochemical mark can't be used as indicator of the human miocardic in the leptospirosis.