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Depression: 21st Century Solutions + The Dark Side of Wheat

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Abstract Title:

Verbascoside isolated from Tectona grandis mediates gastric protection in rats via inhibiting proton pump activity.

Abstract Source:

Fitoterapia. 2010 Oct ;81(7):755-61. Epub 2010 Apr 11. PMID: 20388534

Abstract Author(s):

Neetu Singh, Nivedita Shukla, Pratibha Singh, Rolee Sharma, S M Rajendran, Rakesh Maurya, Gautam Palit

Article Affiliation:

Neetu Singh

Abstract:

Evidences have suggested that Tectona grandis (TG) attenuates gastric mucosal injury; however its mechanism has not yet been established. The aim of present study was to evaluate the gastroprotective mechanism of ethanolic extract of TG (E-EtOH), butanolic fraction (Fr-Bu) and to identify its active constituents. Anti-ulcer activities were evaluated against cold restraint (CRU) and pyloric ligation (PL) induced gastric ulcer models and further confirmed through H(+) K(+)-ATPase inhibitory activity. Cytoprotective activity was evaluated in alcohol (AL) induced gastric ulcer model and further through PGE(2) level. E-EtOH and Fr-Bu attenuated ulcer formation in CRU. Moreover E-EtOH and Fr-Bu displayed potent anti-secretory activity as evident through reduced free acidity and pepsin activity in PL, confirmed further by in vitro inhibition of H(+) K(+)-ATPase activity. In addition cytoprotective potential of E-EtOH and Fr-Bu were apparent with protection in AL model, increased PGE(2) content and enhanced mucin level in PL. Phytochemical investigations of Fr-Bu yielded terpenoides and a phenolic glycoside, verbascoside. The anti-secretory mechanism of verbascoside mediated apparently through inhibition of H(+) K(+)-ATPase with corresponding decrease in plasma gastrin level, is novel to our finding. Gastroprotection elicited by TG might be through proton pump inhibition and consequent augmentation of the defensive mechanism.

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Depression: 21st Century Solutions + The Dark Side of Wheat

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