Task: Answer Verification
Input (English): Question: Do mesenchymal stem cells maintain blood-brain barrier integrity by inhibiting aquaporin-4 upregulation after cerebral ischemia?
Answer: MSCs protected BBB integrity by reducing the apoptosis of astrocytes after ischemic attack, which was due to the attenuation of inflammatory response and downregulation of aquaporin-4 expression via p38 signaling pathway.
Output (English): yes