Background and objective: Etlingera elatior (Jack) R.M. Smith rhizome, which has been traditionally used to reduce stomach discomfort, was reported to possess anti-inflammatory activity, however, there is a lack of such a study on the flower.
Materials and methods: To investigate the anti-inflammatory activity of the E. elatior flower extract on gastric ulceration-induced Wistar rats. The Wistar rats were divided into 6 groups. Group 1 was the normal control, group 2 was the negative control (Arabic gum suspension 2%), group 3 was the positive control (quercetin), group 4-6 were treated with E. elatior flower extract dose of 500, 1000 and 2000 mg kg-1 of b.wt., respectively. The rats were conditioned to gastric ulceration. The stomach weight, microscopic and macroscopic evaluation of gastric mucosal damage was examined. Subsequently, the nuclear factor-kappaB-p65 (NF-kappaB-p65) expression in the fundus was Western-blotted by employing β-actin and GAPDH as the loading controls.
Results: Etlingera elatior flower extract dose of 1000 mg kg-1 b.wt., reduces the ulceration index and the infiltration of inflammatory cells. Western blot analysis showed inhibition of NF-kappaB-p65 expression by E. elatior flower extract dose of 1000 mg kg-1 of b.wt.
Conclusion: Etlingera elatior flower might possess anti-inflammatory activity by downregulating the expression of NF-kappaB-p65 in the fundus of gastric ulceration-induced Wistar rats.
Keywords: Anti-inflammation; Etlingera elatior; gastric ulceration; nuclear factor-kappaB-p65.