RESUMO
D-mannose-resistant hemagglutination with human and bovine red blood cells was determined in 284 cultures of opportunistis enterobacteria isolated from 99 patients with acute intestinal infections and in 55 cultures isolated from 27 practically healthy children aged up to 1 year. In 16 sick children (16.16%) opportunistic enterobacteria, positive when tested in D-mannose-resistant hemagglutination, were detected. In no case were such cultures isolated from practically healthy children. In 9 out of 12 species of opportunistic bacteria belonging to the family Enterobacteriaceae strains showing the positive reaction in the D-mannose-resistant hemagglutination test were found.
Assuntos
Diarreia Infantil/microbiologia , Enterobacteriaceae/efeitos dos fármacos , Hemaglutinação/efeitos dos fármacos , Manose/antagonistas & inibidores , Enterobacteriaceae/isolamento & purificação , Fezes/microbiologia , Testes de Hemaglutinação , Humanos , LactenteRESUMO
The fate of S. typhimurium was followed during the first 5 hours after infection, and a high invasive activity of Salmonella was revealed. After the oral and enteral infection of the animals with several billion organisms, the latter penetrated the blood and internal organs within 10 minutes. When introduced orally, the organisms disseminated by the hematogenic route primarily in the regional lymph nodes and the lungs, but through the blood the infective agent also penetrated the liver and persisted in this organ for a longer period, accumulating in a considerable amount. 10-30 minutes after infection by introducing Salmonella into the lumen of the duodenum most of the organisms were localized in the intestinal tissue, mesenterial lymph nodes and the liver. The organisms persisted in the mouth cavity and the pharynx during the whole period of observation, but in the contents of the intestine they not only stopped proliferating, but quickly died.
