Anti-Atherosclerosis and Anti-Hypertensive Effects of Flavonoid Isorhamnetin Isolated from the Bark of Cordia dichotoma L
2021
Aims: This study aimed to investigate the anti-atherosclerotic and anti-hypertensive ability of isolated Isorhamnetin from the bark of Cordia dichotoma L.
Study design: Experimental study
Place and Duration of Study: The extraction and isolation of bark of Cordia dichotoma L bark (ACDL) was done at Biosapience lab, Bhopal, India. Anti-atherosclerotic activity was done at IFTM University, Moradabad, India. Anti-hypertensive activity was done at BilwalMedchem and Research Laboratory, Pvt. Ltd, Jaipur, India. All the studies was conducted from 2015 to 2021 depending upon the availability of resources.
Methodology: Column chromatography was done for Ethyl acetate soluble fraction of successive alcoholic extract of Cordia dichotoma L bark (ACDL), followed by successive fractionation using benzene, n-butanol, and acetone. Eluents with similar Rf values were pooled and underwent flavonoid test. Only a single eluents that passed the test was underwent purification. The crystallized powder obtained underwent UV, FTIR, Mass, 1H NMR and 13C NMR analysis for structural identification.
The evaluation of anti-atherosclerotic activity of isolated Isorhamnetin from bark extract of plant C. dichotoma L was done in high fat induced atherosclerosis rats. The seven groups of Wistar rats were taken and each group containing six rats. To evaluate the anti-hypertensive activity of the plant extract, L-NAME induced hypertension model was used.
Results: The structural identification and confirmation of flavonoid Isorhamnetin was analyzed by characterizations of isolated product. Lipid, lipoprotein profile and body weight were determined in high fat diet induced atherosclerosis rats. Isorhamnetin isolated from bark of C. dichotoma L produced a significant and dose-dependent anti-atherosclerotic activity in terms of reduction in low density lipoprotein (LDL), very low density lipoprotein (VLDL), Total cholesterol (TC), and Triglyceride (TG) level; and elevation of high density lipoprotein (HDL). Isorhamnetin isolated from the bark of plant C. dichotoma L reduced the elevated arterial pressure of L-NAME induced hypertensive rat significantly to the level of normotensive animal group. The isolated Isorhamnetin have shown its potential as an efficient source for the treatment of hypertension.
Conclusion: The present study has identified the isolation and characterization of isorhamnetin flavonoid from bark of plant C. dichotoma L. This study also provides evidences of anti-atherosclerotic and antihypertensive effects of C. dichotoma L.
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