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Abstract Title:

Antisecretory, gastroprotective, antioxidant and anti-Helicobcter pylori activity of zerumbone from Zingiber zerumbet (L.) Smith.

Abstract Source:

PLoS One. 2015 ;10(3):e0121060. Epub 2015 Mar 23. PMID: 25798602

Abstract Author(s):

Heyam Mohamed Ali Sidahmed, Najihah Mohd Hashim, Mahmood Ameen Abdulla, Hapipah Mohd Ali, Syam Mohan, Siddig Ibrahim Abdelwahab, Manal Mohamed Elhassan Taha, Loke Mun Fai, Jamuna Vadivelu

Article Affiliation:

Heyam Mohamed Ali Sidahmed

Abstract:

BACKGROUND: Zingiber zerumbet Smith is a perennial herb, broadly distributed in many tropical areas. In Malaysia, it's locally known among the Malay people as"lempoyang"and its rhizomes, particularly, is widely used in traditional medicine for the treatment of peptic ulcer disease beyond other gastric disorders.

AIM OF THE STUDY: The aim of the current study is to evaluate the gastroprotective effect of zerumbone, the main bioactive compound of Zingiber zerumbet rhizome, against ethanol-induced gastric ulcer model in rats.

MATERIALS AND METHODS: Rats were pre-treated with zerumbone and subsequently exposed to acute gastric ulcer induced by absolute ethanol administration. Following treatment, gastric juice acidity, ulcer index, mucus content, histological analysis (HE and PAS), immunohistochemical localization for HSP-70, prostaglandin E2 synthesis (PGE2), non-protein sulfhydryl gastric content (NP-SH), reduced glutathione level (GSH), and malondialdehyde level (MDA) were evaluated in ethanol-induced ulcer in vivo. Ferric reducing antioxidant power assay (FRAP) and anti-H. pylori activity were investigated in vitro.

RESULTS: The results showed that the intragastric administration of zerumbone protected the gastric mucosa from the aggressive effect of ethanol-induced gastric ulcer, coincided with reduced submucosal edema and leukocyte infiltration. This observed gastroprotective effect of zerumbone was accompanied with a significant (p<0.05) effect of the compound to restore the lowered NP-SH and GSH levels, and to reduce the elevated MDA level into the gastric homogenate. Moreover, the compound induced HSP-70 up-regulation into the gastric tissue. Furthermore, zerumbone significantly (p<0.05) enhanced mucus production, showed intense PAS stain and maintained PG content near to the normal level. The compound exhibited antisecretory activity and an interesting minimum inhibitory concentration (MIC) against H. pylori strain.

CONCLUSION: The results of the present study revealed that zerumbone promotes ulcer protection, which might be attributed to the maintenance of mucus integrity, antioxidant activity, and HSP-70 induction. Zerumbone also exhibited antibacterial action against H. pylori.

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