@article {1335, title = {Preclinical Trial of Propolis Extract in Prevention of High Salt Diet- Induced Hypertension}, journal = {Pharmacognosy Journal}, volume = {13}, year = {2021}, month = {January 2021}, pages = {89-96}, type = {Original Article}, chapter = {89}, abstract = {

Background: Propolis has been widely reported as having various biological activities. However, Indonesian propolis seems to be less explored. Objective: The present study aimed to analyze the antihypertensive activity of Indonesian propolis in rats. Materials and Methods: Hypertension was induced by high-NaCl (8\%) diet for 3 weeks. A total of 36 rats were divided into 6 groups, including standard diet group (SD), high-NaCl diet group (NaD), high-NaCl diet group + captopril (25 mg/ kg) (PD), high-NaCl diet + propolis from Riau Archipelago (NaDP1), high-NaCl diet + propolis from Lampung (NaDP2) and high-NaCl diet + propolis from South Sulawesi (NaDP3). Propolis was daily administered at dose of 200 mg/ kg on hypertensive rats for 1 week. Blood pressure and body weight were weekly measured. Moreover, routine urine analysis, haematological parameters and lipid profiles at week 4 were determined. Results: The results showed that high-NaCl diet successfully induced hypertension in rats after 3 weeks of intervention. However, the diet did not cause weight gain (p\>0.05). All Indonesian propolis samples significantly reversed either systolic or diastolic blood pressure of hypertensive rats. From urine analysis, propolis from Riau Archipelago and Lampung showed diuretic effect. The haematological analysis mainly showed no significant difference compared standard diet group. Furthermore, LDL and HDL concentrations were significantly improved by propolis from Lampung and South Sulawesi, respectively (p\<0.05). In addition, we only found significant decrease in relative weight of liver in all groups administered with high-NaCl diet (p\<0.05). Conclusion: The present study suggests that all Indonesian propolis possessed antihypertensive activity.

}, keywords = {antihypertension, Blood pressure, High-NaCl diet, Stingless bee propolis}, doi = {10.5530/pj.2021.13.13}, author = {Ade Heri Mulyati and Ahmad Sulaeman and Sri Anna Marliyati and Mohamad Rafi and Al Mukhlas Fikri} } @article {261, title = {Inhibition Activity of Angiotensin Converting Enzyme (ACE) and Determination of Total Phenolic and Flavonoid Compound from Bitter Melon Leaves (Momordica charantia L.)}, journal = {Pharmacognosy Journal}, volume = {9}, year = {2017}, month = {February 2017}, pages = {252-256}, type = {Original Article}, chapter = {252}, abstract = {

Introduction: Hypertension is a leading problem in Indonesia, because of the high prevalence and the long term effect. Bitter melon leaves (Momordica charantia L.) has been traditionally utilized to treat hypertension, yet not many studies explained the antihypertension effect of this plant. Methods: This study was conducted to test the benefit of bitter melon leaves as antihypertension using angiotensin converting enzyme inhibition activity in 80\% ethanolic extract and its fractions (n-hexane, ethyl acetate, and n-butanol) using ACE kit-WST (Dojindo, Japan). Then the antihypertension activity was associated with the phenolic content which was expressed in gallic acid equivalent (GAE) and total flavonoid in quercetin equivalent (QE). Results: Result of the study showed that the IC50 value obtained from the ethanolic extract to inhibit ACE activity was 7.52 \μg/mL and the highest inhibition obtained in ethyl acetate fraction with IC50 value was 4,29 \μg/mL. Phenolic total and flavonoid total determination also showed that the highest content obtained in ethyl acetate fraction with 18.752 mg GAE/gr extract and 8.310 mg QE/gr extract, respectively. Conclusion: According to the study, it could be concluded that bitter melon (Momordica charantia L.) leaves provide inhibition activity against Angiotensin Converting Enzyme (ACE) and chemical compounds that were expected to play an active role in inhibiting ACE were flavonoid and tannin.

}, keywords = {Angiotensin converting enzyme, antihypertension, Momordica charantia L., total flavonoid., total phenolic}, doi = {10.5530/pj.2017.2.43}, url = {http://phcogj.com/fulltext/310}, author = {Putri Lestari and Katrin and Rissyelly and Putu Gita Maya Widyaswari Mahayasih} }