RESUMO
CONTEXT: Brain-derived neurotrophic factor (BDNF) is a neurotrophin involved in neuronal survival, differentiation, and maturation. PURPOSE: To evaluate the levels of BDNF in the acute phase of stroke and their potential association with neurological impairment. METHODS: Patients in the acute phase of ischemic stroke were evaluated with the following clinical tools: National Institutes of Health Stroke Scale, modified Rankin scale, Gugging Swallowing Screen and Alberta Stroke Program Early CT Score. Blood samples were collected at 3 different moments of hospital stay. BDNF was measured through enzyme-linked immunosorbent assay. RESULTS: Patients who were discharged after 10 days had worse clinical outcomes and higher levels of BDNF since admission. There was correlation between BDNF levels and clinical parameters. CONCLUSION: BDNF levels were associated with clinical prognosis in the acute phase of ischemic stroke.