Quercetin – ABC CARDIOL

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Editorial

Short Editorial: Quercetin Ameliorates Lipid and Apolipoprotein Profile in High-Dose Glucocorticoid Treated Rats

Short Editorial related to the article: Quercetin Ameliorates Lipid and Apolipoprotein Profile in High-Dose Glucocorticoid Treated Rats

Flavonoids, such as anthocyanins, flavonols, flavanols, flavanones, flavones, and isoflavones are the most abundant polyphenols in the human diet. The flavonol quercetin is one of the most studied among these compounds.^– Quercetin is a secondary plant metabolite of the flavonol subclass of flavonoids present in many fruits and vegetables, e.g. apples, grapes, onions and peppers.^,

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Original Article

Quercetin Ameliorates Lipid and Apolipoprotein Profile in High-Dose Glucocorticoid Treated Rats

Hoda Derakhshanian et al. Mahmoud Djalali Abolghassem Djazayery Mohammad Hassan Javanbakht … Mahnaz Zarei Azita Hekmatdoost Ghazaleh Eslamian Seyyedeh Somayyeh Mirhashemi Ahmad Reza Dehpour

Abstract

Background

Glucocorticoids (GCs) are widely prescribed for the treatment of numerous clinical disorders due to their anti-inflammatory and immune-modulatory properties and one of the most common untoward effects of these drugs is dyslipidemia.

Objective

To evaluate the effect of quercetin, a plant-derived flavonoid, on the lipid profile of high-dose glucocorticoid treated rats.

Methods

A total of 32 Sprague-Dawley rats, were randomly distributed among four groups (8 rats per group) and treated for 6 weeks with one of the following: (i) normal saline; (ii) 40 mg/kg methylprednisolone sodium succinate (MP); (iii) MP + 50 mg/kg quercetin; (iv) MP + 150 mg/kg quercetin. MP was injected subcutaneously, and quercetin was administered by oral gavage 3 days a week. At the end of the study, the animals’ lipid profile was measured by enzymatic kits. Data were analyzed and statistical significance was set at p<0.05.

Results

The mean serum total cholesterol (TC), triglyceride (TG) and LDL levels were drastically increased in GC-treated animals compared with the control group. Both doses of quercetin (50 and 150 mg/kg) ameliorated TC (43% and 45%), LDL (56% and 56%) and TG (46% and 55% respectively). Apo B/A1 ratio decreased more than 20% following quercetin intake and the decline in TC/HDL, TG/HL, LDL/HDL ratios were significant.

Conclusions

These data suggest that quercetin intake with both doses of 50 and 150 mg/kg could be considered as a protective agent for glucocorticoid-induced dyslipidemia. (Arq Bras Cardiol. 2020; 115(1):102-108.)