metabolic and hematologic consequences of colectomy associated to hepatectomy in rats consequências metabólicas e hematológicas da colectomia associada à hepatectomia em ratos

Clicks: 372
ID: 234688
2011
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Abstract
PURPOSE: To investigate the influence of partial colectomy associated with hepatectomy on the biodistribution of the 99mTc-phytate, on metabolic parameters, as well as labeling and morphology of red blood cells. METHODS: Wistar rats were distributed into three groups (each with six), nominated as colectomy, colectomy+hepatectomy and sham. In the 30th postoperative day all rats were injected with 99mTc-phytate 0.1mL i.v. (radioactivity 0.66 MBq). After 15 minutes, liver sample was harvested and weighed. Percentage radioactivity per gram of tissue (%ATI/g) was determined using an automatic gamma-counter. Serum AST, ALT, alkaline phosphatase and red blood cells labeling were determined. RESULTS: The liver %ATI/g and red blood cells labeling were lower in colectomy and colectomy+hepatectomy rats than in sham rats (p <0.05), and no difference was detected comparing the colectomy and colectomy+hepatectomy groups. Red blood cells morphology did not differ among groups. Serum levels of AST, ALT and alkaline fosfatase were significantly higher in colectomy+hepatectomy than in colectomy rats (p<0.001). CONCLUSION: Hepatectomy associated with colectomy lowered the uptake of radiopharmaceutical in liver and in red blood cells in rats, coinciding with changes in liver enzymatic activity.
OBJETIVO: Investigar a influência da colectomia associada à hepatectomia parcial, na biodistribuição do fitato-99mTcO4, na marcação e morfologia de hemácias e em parâmetros metabólicos. MÉTODOS: Ratos Wistar foram distribuídos em três grupos (seis animais cada), denominados: colectomia, colectomia+hepatectomia e sham. No 30º dia pós-operatório, em todos eles foi feita injeção de 0,1 mL i.v. de fitato-99mTcO4 (radioatividade 0,66 MBq). Após 15 minutos, uma amostra de fígado foi colhida e pesada. O percentual de radioatividade por grama de tecido (%ATI/g) foi determinado no fígado e hemácias usando-se um contador gama automático. Dosagem sérica de AST, ALT, fosfatase alcalina, morfologia e marcação de hemácias com pertecnetato foram determinadas. RESULTADOS: O %ATI/g no fígado e nas hemácias foi menor nos animais dos grupos colectomia e colectomia+hepatectomia do que no grupo sham (p<0,05; teste de Tukey). Nenhuma diferença foi detectada comparando os grupos colectomia e colectomia+hepatectomia. A morfologia das hemácias não diferiu entre os três grupos. Os níveis séricos de AST, ALT e fosfatase alcalina foram significativamente maiores no grupo colectomia+hepatectomia do que no grupo colectomia (p<0,001). CONCLUSÃO: A colectomia associada a hepatectomia contribuiu para reduzir a captação de radiofármaco no fígado e hemácias de ratos, coincidindo com alterações na atividade enzimática do fígado.
Reference Key
carvalho2011actametabolic Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Marília Daniela Ferreira Carvalho;Irami Araújo-Filho;Ítalo Medeiros Azevedo;Amália Cínthia Meneses Rêgo;Aldo Cunha Medeiros
Journal forensic science international
Year 2011
DOI
10.1590/S0102-86502011000600016
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-86502011000600016
Keywords
metabolism hepatectomy metabolismo colectomy ratssurgery biological availability

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