Related Experiment Video
Updated: Oct 10, 2025

Standardized Rat Coronary Ring Preparation and Real-Time Recording of Dynamic Tension Changes Along Vessel Diameter
Published on: June 16, 2022
Vitamin C Inhibits Angiotensin-Converting Enzyme-2 in Isolated Rat Aortic Ring
Ayoub Amssayef1, Ismail Bouadid1, Mohamed Eddouks1
1Department of Biology, Team of Ethnopharmacology and Pharmacognosy, Faculty of Sciences and Techniques, Moulay Ismail University of Meknes, BP 509, Boutalamine, 52000 Errachidia, Morocco.
Aims:
The study aimed to assess the inhibitory effect of Vitamin C on angiotensin-converting enzyme 2.
Background:
Coronavirus disease 2019 (COVID-19) is a disease caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which uses angiotensin-converting enzyme 2 (ACE-II) as the first route to infect human cells. Accordingly, agents with potential inhibition of ACE-II receptors might be effective in the prevention and management of COVID-19.
Objective:
The goal of this work was to assess the possible inhibitory effect of ACE-II on ascorbic acid using an ex vivo approach based on the inhibition of diminazene-induced vasorelaxation.
Materials And Methods:
In the present study, diminazene was used as a known specific inhibitor of ACE-II. Then, the vasorelaxant effect of ascorbic acid on diminazene-induced relaxation was examined using isolated aortic rings. All experiments of this study were evaluated on isolated aortic rings precontracted by epinephrine.
Results:
The results confirmed that diminazene-induced vasorelaxation in a dose-dependent manner. More interestingly, ascorbic acid inhibited diminazene-induced vasorelaxation in a dose-dependent manner.
Conclusion:
This investigation provides valuable experimental proof of the efficacy of ascorbic acid (Vitamin C) on inhibiting ex vivo vascular angiotensin-converting enzyme II, which is known among the pharmacological targets of anti-COVID-19 drugs.
More Related Videos
08:55Isolation and Characterization of Primary Rat Valve Interstitial Cells: A New Model to Study Aortic Valve Calcification
Published on: November 20, 2017
10:28Evaluation of Vascular Control Mechanisms Utilizing Video Microscopy of Isolated Resistance Arteries of Rats
Published on: December 5, 2017
Related Concept Videos
Antihypertensive Drugs: Angiotensin-Converting Enzyme Inhibitors
Antihypertensive Drugs: Angiotensin II Receptor Blockers
Antihypertensive Drugs: Direct Renin Inhibitors
Heart Failure Drugs: Inhibitors of Renin-Angiotensin System