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Caspases inhibition decreases neurological sequelae in meningitis*

2008; Lippincott Williams & Wilkins; Volume: 36; Issue: 5 Linguagem: Inglês

10.1097/ccm.0b013e318170ab08

1530-0293

José Irazuzta, Robert K. Pretzlaff, Basilia Zingarelli,

S100 Proteins and Annexins

Objective: To evaluate the effects of sustained caspase inhibition during the acute phase of meningitis-induced brain injury. Changes in neurobehavioral performance were the primary outcome variables. Design: Randomized prospective animal study. Setting: University research laboratory. Subjects: Male Wistar rats. Interventions: Animals underwent a basilar cistern inoculation of group B Streptococci to induce meningitis. Sixteen hours later animals were randomized to receive Bocaspartyl (OMe)-fluoromethyketone (BAF) for 4 days or placebo in addition to antibiotic therapy. The assessment of neurobehavioral performance was started 7 days after initiation of treatment and continued for the following 3 wks. A subgroup underwent early kill, at 5 days, to evaluate caspase 3 activity in brain tissue. There was a group of Sham instrumented animals. Measurements and Main Results: BAF decreased caspase 3 activation in meningitic animals. There were no significant motor deficit differences between the infected groups. Cognitive performance was significantly improved in the BAF group. Conclusion: These findings demonstrate that sustained systemic administration of BAF inhibits caspase 3 activation and decreases neurologic sequelae in a rat model of bacterial meningitis.