Introduction: Piper aduncum also known as matico is credited with antihypertensive, anti-inflammatory, healing effects. Objectives: To determine the antihypertensive activity of Piper aduncum ‘matico’ extract on L-NAME-induced hypertension in mice. Design: Experimental. Setting: Faculty of Medicine, and Faculty of Pharmacy and Biochemistry, National University of San Marcos, Lima, Peru. Biological material: Piper aduncum ethanolic extract leaves and mice. Interventions: Six groups of six Muss musculus mice each were used, one without hypertension (negative control) and four with L-NAME-induced hypertension: one positive control and three groups for 50, 150 and 300 mg/kg doses, respectively. Treatment was given orally once daily for 25 days. Measurements of systolic blood pressure (SBP), diastolic blood pressure (DBP) and mean arterial pressure (MAP) were performed twice weekly (Tuesd...

Objectives: To determine the protective effect of Piper aduncum (matico) leaves ethanol extract and its phytomedicine in capsules in liver cirrhosis induced in rats. Design: Experimental. Location: Faculty of Medicine, Universidad Nacional Mayor de San Marcos, Lima, Peru. Biological material: Leaves of Piper aduncum, and Rattus norvegicus, Holtzman strain. Interventions: The leaves were collected in La Merced district, Pasco department. The phytomedicine capsules were prepared from the plant ethanol extract. Cirrhosis was induced with phenobarbital 0.5 mg/mL diluted in drinking water during 15 days, then carbon tetrachloride 0.2mL/kg 1:1 in olive oil orally during 7 days. Blood samples were drawn in order to determine liver profile and malondialdehyde; the animals were sacrificed, extracting the liver for pathology study. Data were evaluated by multivariate techniques with p <0.05. Ma...