Analgesic and gastroprotective activity of extracts and infusion of minthostachys mollis and plantago major

Abstract

Muña and llantén are plants from the Andean region of Bolivia, traditionally their leaves are used as an infusion due to their analgesic and gastroprotective properties. Objective: to evaluate the analgesic and gastroprotective activity of extracts and infusion of muña (Minthostachys mollis) and llantén (Plantago major) leaves, using biological tests in Rattus norvegicus. Methods: an experimental, prospective, longitudinal study was conducted in which the analgesic and gastroprotective activity was evaluated in 30 Rattus norvegicus divided into six lots: control, standard, problem I, II, III, IV, to which abdominal convulsions were induced with glacial acetic acid and gastric ulcers with absolute ethanol. Results: the infusion of muña and llantén presented 81.4% analgesic activity and an effectiveness percentage above 100%, 60% gastroprotective activity and 100% effectiveness in relation to the number of lesions. Similarly, 69.6% gastroprotective activity and 95.9% effectiveness with respect to the degree of injury. These percentages described were higher in comparison to the percentages of muña extract, llantén extract, combined extracts. The ANOVA one-factor Kruskal-Wallis test revealed a statistically significant difference (p<0.05 (p=0.013 number of convulsions); 95% CI) in analgesic activity and a non-significant difference in gastroprotective activity (p>0.05 (p=0.167 number of lesions and p=0.384 degree of injury); 95% CI). Conclusions: the infusion of muña and llantén has better analgesic and gastroprotective activity compared to the extracts.