Hypotensive Effect of Hydroalcoholic Ziziphus jujuba Extract on Normotensive Rats

Objective: Ziziphus jujuba (Z.J) is a medicinal plant with several properties such as antioxidant, antibacterial, hypnotic and wound healing activity. It also has lowering blood pressure effect and people use it to treat hypertension. In the present study, the effect of hydroalcoholic extract of Z.J on cardiovascular parameters in the normotensive rats was investigated. Methods: Animal groups include: 1) Sham, only cannulation of artery 2) saline, received saline for four weeks 3-5) Z.J groups (100, 200 and 400 mg/kg) that treated with Z.J via gavage for four weeks. In the experiment day (28th Day) femoral artery of all rats cannulated and Systolic Blood Pressure (SBP), Mean Atrial Pressure (MAP) and Heart Rate (HR) recorded by a power lab system. The weight of animal in all groups also was recorded in the beginning and the last day of experiment. Results: There was no significant difference in HR, SBP and MAP parameters between sham and control groups. The SBP and MAP in higher doses of Z.J (200 and 400 mg) significantly decreased compared to control group. The HR only in dose 200 mg of Z.J significantly decreased than the control group. Conclusion: The results of present study show that hydroalcoholic extract of Z.J has an inhibitory effect on basal cardiovascular parameters and its best effects have been shown in dose 200 mg/kg.