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REVIEW ARTICLE
Year : 2017  |  Volume : 11  |  Issue : 21  |  Page : 1-7

Review of angiotensin-converting enzyme inhibitory assay: Rapid method in drug discovery of herbal plants


1 Department of Pharmaceutical Sciences, Faculty of Pharmacy, Mulawarman University, Samarinda, East Kalimantan 75116; Department of Pharmaceutical Sciences, Faculty of Pharmacy, Universitas Indonesia, Indonesia
2 Department of Pharmaceutical Sciences, Faculty of Pharmacy, Universitas Indonesia, Indonesia
3 Department of Chemical Engineering, Faculty of Engineering, Universitas Indonesia, Depok, West Java 16424, Indonesia

Correspondence Address:
Abdul Mun'im
Faculty of Pharmacy, Universitas Indonesia, Building A, 3rd Floor, Rumpun Ilmu Kesehatan, Kampus UI Depok, West Java 16424
Indonesia
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/phrev.phrev_45_16

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The renin-angiotensin-aldosterone system is a signaling pathway which responsible in the blood pressure regulation. Angiotensin-converting enzyme (ACE) is one of the key elements responsible for the hypertensive mechanism. It converts angiotensin-I to angiotensin-II. The discovery history of the ACE inhibitory activity assay method has been through a long stage for decades and development continues until today. The ACE inhibitory activity has become an effective screening method in the search for new antihypertensive agents from herbal plants. Some of in vitro assay methods were used to examine the activity of ACE inhibitors based on the substrate usage, such as; Cushman and Cheung Method using a substrate hippuryl-histidyl-leucine (HHL), Holmquist method using a substrate furanacryloyl-tripeptide, Elbl and Wagner method using a substrate benzoil-[l-14C] glicyl-L-histidine-L-leucine, Carmel and Yaron method using a substrate o-aminobenzoylglycyl-p-nitrophenylalanilproline, and Lam method using 3-hydroxybutyrylglycyl-glycyl-glycine as substrate. Several different methods to measure the results of enzymatic reactions or separating substrate with products, including spectrophotometric, fluorometric, high-performance liquid chromatography, electrophoresis, and radiochemistry. Application of the test method for screening the ACE inhibitors activity and investigation of active compounds from natural products can be done easily with this method, it is very helpful in research because the results obtained are simple, accurate, and rapid.


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