| Summary: | The objective of this study was to evaluate the in vitro anti-oxidant, hypo-tensive and the diuretic activities of Origanum glandulosum leaves in rat. Chemical analysis revealed the isolation of katuranin and 5-isopropyl-3-methylphenol. Ethyl acetate extract possessed highest scavenging activity against DPPH and hydroxyl radicals. Intravenous administration of extracts (0.04 to 12 mg/kg body weight) dose-dependently decreased the blood pressure (systolic, diastolic and mean) of the anesthetized rat. Methanol extract showed dose-dependent diuretic activity by increasing the urine output (77%) and the urinary excretion of sodium and potassium. In conclusion, this study supports the use of O. glansulosum in traditional medicine as hypotensive and diuretic agents.
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