Fig. 5.
Effect of E-64-d on the abnormal down-regulation of PKC activity in Con A-stimulated PBMC from CHS patients and normal controls. The PBMC (1×106/ml) from four CHS (P1,2,3,4) and two normal controls (C1,2) were incubated with E-64-d (1 μg/ml) or medium alone for 1 h. Then the cells were stimulated with or without Con A (20 μg/ml) for 20 min. The membrane-bound (a) and the cytosolic (b) PKC activity was assayed as described in Patients and methods. ▪ Medium; □ Con A; E-64-d + Con A.