Nuclear factor kappa B： A marker of chemotherapy for human stage Ⅳ gastric carcinoma

AIM： To detect the nuclear factor kappa B （NF-κB） condition in human stage IV gastric carcinoma patients and to explore the correlation between NF-κB activation and survival of these patients after chemotherapy. METHODS： Expression of NF-κB-p65 was determined by immunohistochemical analysis. Activity of NF-κB DNA-binding in carcinoma tissue was detected by electrophoretic mobility shift assay. Kaplan-Meier survival analysis was performed to show the relation between NF-κB and progression-free survival （PFS） or overall survival （OS） of the patients. RESULTS： The positive expression rate of NF-κB-p65 in 60 gastric cancer tissue samples was 76.7% （46160）. The expression of NF-κB-p65 was reduced in adjacent carcinoma and normal tissue samples. Electrophoretic mobility shift assay （EMSA） analysis showed a strong activation of NF-κB in cancer tissue samples. A survival difference was found in NF-κB-p65 positive and negative patients. NF-κB-p65 expression was negative in cancer tissue samples （n = 14）. PFS was 191.40 ± 59.88 d and 152.93 ±16.99 d, respectively, in patients with positive NF-κB-p65 expression （n = 46） （P = 0.4028）. The survival time of patients with negative and positive NF-κB-p65 expression was 425.16 ±61.61 d and 418.85 ±42.98 d, respectively （P = 0.7303）. Kaplan-Meier analysis showed no significant difference in PFS or OS. The 46 patient tissue which positive NF-κB-p65 expression was found in the tissue samples from the 46 patients whose PFS and OS were 564.89 ± 75.94 d and s 352.37 ±41.32 d, respectively （P = 0.0165）. CONCLUSION： NF-κB is activated in gastric carcinoma tissue, which is related to the OS after chemotherapy.

Nuclear factor kappa B: a marker of chemotherapy for human stage IV gastric carcinoma

AIM: To detect the nuclear factor kappa B (NF-kappaB) condition in human stage IV gastric carcinoma patients and to explore the correlation between NF-kappaB activation and survival of these patients after chemotherapy. METHODS: Expression of NF-kappaB-p65 was determined by immunohistochemical analysis. Activity of NF-kappaB DNA-binding in carcinoma tissue was detected by electrophoretic mobility shift assay. Kaplan-Meier survival analysis was performed to show the relation between NF-kappaB and progression-free survival (PFS) or overall survival (OS) of the patients. RESULTS: The positive expression rate of NF-kappaB-p65 in 60 gastric cancer tissue samples was 76.7% (46/60). The expression of NF-kappaB-p65 was reduced in adjacent carcinoma and normal tissue samples. Electrophoretic mobility shift assay (EMSA) analysis showed a strong activation of NF-kappaB in cancer tissue samples. A survival difference was found in NF-kappaB-p65 positive and negative patients. NF-kappaB-p65 expression was negative in cancer tissue samples (n = 14). PFS was 191.40 +/- 59.88 d and 152.93 +/- 16.99 d, respectively, in patients with positive NF-kappaB-p65 expression (n = 46) (P = 0.4028). The survival time of patients with negative and positive NF-kappaB-p65 expression was 425.16 +/- 61.61 d and 418.85 +/- 42.98 d, respectively (P = 0.7303). Kaplan-Meier analysis showed no significant difference in PFS or OS. The 46 patient tissue which positive NF-kappaB-p65 expression was found in the tissue samples from the 46 patients whose PFS and OS were 564.89 +/- 75.94 d and s 352.37 +/- 41.32 d, respectively (P = 0.0165). CONCLUSION: NF-kappaB is activated in gastric carcinoma tissue, which is related to the OS after chemotherapy.