Fig. 3From: Brain-derived neurotrophic factor in Alzheimer’s disease and its pharmaceutical potentialStrategies to improve BDNF levels in the brain. The current therapeutic approaches to enhancing BDNF concentration include endogenous BDNF enhancement and exogenous BDNF supplement. The former one aims to induce endogenous BDNF production or secretion. The latter one attempts to release BDNF in situ or further transport it into target brain regionsBack to article page