NAMPT and stroke disorder: To verify that the increased autophagy expression induced by OGD/R-ADEXs was caused by exosomal delivery of Nampt, we injected either PBS, OGD/R-ADEXs, or OGD/R-ADEXs pretreated with sh-Nampt (OGD/R-ADEXssh-Nampt), or with OGD/R-ADEXs pretreated with the control (OGD/R-ADEXssh-NC) into the stroke model mice.