Abstract
It is believed that the physiopathology of obsessive-compulsive disorder (OCD) is associated with a deficiency in inhibitory neuronal processes and fear of extinction. In patients with OCD, it was found that plasma levels of brain-derived neurotrophic factor (BDNF) are smaller than in healthy subjects and the allelic variant of the gene that encodes it, known as BDNF met66val, is associat…