text_1: Intra-cerebroventricular infusion of amyloid-β oligomers reduces expression of fibronectin type-III domain-containing protein 5 mRNA in mice hippocampi.
text_2: Irisin is an exercise-induced myokine released on cleavage of the membrane-bound precursor protein fibronectin type III domain-containing protein 5 (FNDC5), also expressed in the hippocampus.