Data/hora: 04/06/2024 01:13:49

Provedor de dados: | 56
País: | Brazil
Título: | Effect of antibodies to intercellular adhesion molecule type 1 on the protection of distant organs during reperfusion syndrome in rats
Autores: | Souza-Moraes,M.R.; David-Filho,R.; Baptista-Silva,J.C.C.; Ullian,M.; Franco,M.F.; Gabriel Jr.,A.; Smith,B.; Burihan,E.
Data: | 2003-05-01
Ano: | 2003
Palavras-chave: | ICAM-1; Neutrophil; Myeloperoxidase; Kidney; Lung; Reperfusion.
Resumo: | We investigated kidney and lung alterations caused by intercellular adhesion molecule type 1 (ICAM-1) blockade after ischemia and reperfusion of hind limb skeletal muscles. Rats were submitted to ligature of the infrarenal aorta for 6 h. The animals were randomized into three groups of 6 rats each: group I, sacrificed after ischemia; group II, reperfusion for 24 h, and group III, reperfusion for 24 h after receiving monoclonal anti-ICAM-1 antibodies. At the end of the experiment, blood samples were collected for creatinine, lactate dehydrogenase, creatine phosphokinase, potassium, pH and leukocyte counts. Samples were taken from the muscles of the hind limbs and from the kidneys and lungs for histological analysis and measurement of the neutrophil infiltrate by myeloperoxidase staining. The groups did not differ significantly with regard to the laboratory tests. There were no major histological alterations in the kidneys. An intense neutrophil infiltrate in the lungs, similar in all groups, was detected. Myeloperoxidase determination showed that after reperfusion there was significantly less retention of polymorphonuclear neutrophils in the muscles (352 ± 70 vs 1451 ± 235 × 10² neutrophils/mg; P&lt;0.01) and in the kidneys (526 ± 89 vs 852 ± 73 × 10² neutrophils/mg; P&lt;0.01) of the animals that received anti-ICAM-1 before perfusion compared to the group that did not. The use of anti-ICAM-1 antibodies in this experimental model minimized neutrophil influx, thus reducing the inflammatory process, in the muscles and kidneys after ischemia and reperfusion of the hind limbs.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2003000500007
Editor: | Associação Brasileira de Divulgação Científica
Relação: | 10.1590/S0100-879X2003000500007
Formato: | text/html
Fonte: | Brazilian Journal of Medical and Biological Research  v.36 n.5 2003
Fonte: | info:eu-repo/semantics/openAccess