Protective Effect of Calamintha officinalis Moench Leaves against Alcohol‐induced Gastric Mucosa Injury in Rats. Macroscopic, Histologic and Phytochemical Analysis
2012
Monforte, M. T. | Lanuzza, F. | Pergolizzi, S. | Mondello, F. | Tzakou, O. | Galati, E. M.
Calamintha officinalis Moench (Lamiaceae) is an aromatic plant used since ancient times for its preservative and medicinal properties. The plant, known as ‘Mentuccia’ in Central Italy, is used in cooking as an aromatizant and to impart aroma and flavour to food. The methanol extract of the leaves was subjected to phytochemical and biological investigations. The extract contains polyphenols, catechic tannins and terpenes and shows radical scavenger activity. By means of HPLC analysis, eriocitrin, eriodyctiol, acacetin, linarin, benzoic acid and some phenolic acids, such as caffeic, chlorogenic, p‐coumaric, were determined. The gastroprotective activity of the extract was investigated using ethanol‐induced ulcer in rats, with sucralfate as a reference drug. Samples of gastric mucosa, stained by PAS and haematoxylin/eosin, were observed by light microscopy. The efficacy of the extract was comparable to that of the reference drug. Probably the gastroprotective effect depends on a synergistic action of all the compounds occurring in C. officinalis leaves, even if the antioxidant potential of the leaves plays an important role by removing damaging agents from the gastric mucosa.
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