Plasma Levels of Brain-Derived Neurotrophic Factor are Associated with Prognosis in the Acute Phase of Ischemic Stroke

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.