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The Effect of the Bark Water Extract Uncaria tomentosa on the Pseudomonas Aeruginosa Infection in Mice

The influence of water extract of Uncaria tomentosa (Willd.) DC. bark on Pseudomonas aeruginosa infection was studied. The preparation was obtained by extraction of bark Uncaria tomentosa with water (37°C, 24 h) and further fractionation. Inbred C57BL/6 mice 7-9 weeks old, ca 20 g of body mass, females, were fed water extract for 7 days (10, 20 or 100 mg/kg), or water (controls). On the 8th day some mice were infected i.p. with P. aeruginosa strain ATCC. Livers were excised after four hours, homogenized and the numbers of viable bacteria were estimated by plating.