Fig. (8). Nicotinamide (NIC) does not alter anoxia-induced p38 and JNK activation.
The effect of NIC on anoxia-induced phosphorylation of p38 (A) and JNK (B) was determined. Total protein extracts were prepared from either untreated control cultures or from cultures 1 h after a 4 h period of anoxia with or without pretreatment with NIC (12.5 mM). The cellular level of total p38 (A) and JNK (B) remained unchanged in each group. A significant expression of active form of p38 (p-p38) and JNK (p-JNK) was detected from cultures exposed to anoxia. Pretreatment with NIC 1 h prior to anoxia did not prevent anoxia-induced the activation of p38 (A) and JNK (B). Data presented are taken from one individual experiment of three giving similar results.