GRIK1 and ischemia: The percentage of myenteric neurons immunopositive for GluK1–3 increased after I/R, however values resulted significantly different from control values only after chemically-induced ischemia (59.43±8.32%, n = 4, P<0.05 after ischemia; 45.88±5.89%, n = 4 P>0.05 after reperfusion).