In experimental animals, the intraperitoneal administration of deltamethrin, at a dose 10 mg/kg, influenced BDNF (brain-derived neurotrophic factor)/Tropomyosin receptor kinase B (TrkB) signaling pathways, which are supposed to be the site of the action of drugs used in mental disorders and neurodegenerative diseases [62]. Here, BDNF is linked to neurodegenerative disease.