Ischemia-induced hippocampal late-onset reduction of muscarinic acetylcholine receptors (LORMAR) begins as late as 7 days after transient forebrain ischemia in the gerbil, but it precedes to completion of neuronal death in the CA1 region. We previously reported that post-ischemic administration of cyclosporin A prevented LORMAR with suppression of astroglial and microglial activation. In the present study, we showed that the chronic post-ischemic administration of a non-steroidal anti-inflammatory drug, ketoprofen (5 mg/kg, subcutaneously, twice a day for 14 days) significantly reduced LORMAR both 14 days and 21 days after the 5-min transient ischemia. This protective effect of ketoprofen against LORMAR suggests that the non-steroidal anti-inflammatory drugs is clinically efficacious in the treatment of LORMAR, a sequela of cerebral ischemia.
Asanuma, M., Asanuma, S. N., Gómez-Vargas, M., Yamamoto, M., & Ogawa, N. (1997). Ketoprofen, a non-steroidal anti-inflammatory drug prevents the late-onset reduction of muscarinic receptors in gerbil hippocampus after transient forebrain ischemia. Neuroscience Letters, 225(2), 109–112. https://doi.org/10.1016/S0304-3940(97)00204-8