LICORICE & HEART HEALTH
Licorise has been clinically proved to be effective slowing down the formation of atherosclerosis caused by LDL- oxidation.
Licorise as shown in the in-vivo scientific research, improves indicators of all risk factors which are related to Atherosclerotic disease such as: Hypertension, Cardiovascular diseases, Diabetes, Chronic renal failure.
A natural remedy for heart disease and Metabolic syndrom
Atherosclerosis is a multifactorial disease, and other factors besides lipid peroxidation can accelerate atherogenesis independently or in association with lipid peroxidation. Increased retention and aggregation of LDL in the arterial wall and LDL oxidation are key events in the acceleration of atherogenesis.
The present study showed for the ﬁrst time that licorice extract consumption by hypercholesterolemic patients reduces the susceptibility of their LDL to ex vivo CS binding ability, oxidation, and aggregation.
In the study it was conclude that consumption of licorice extract may prove beneﬁcial in its ability to attenuate the accelerated development of atherosclerosis in hypercholesterolemic patients.
Licorice-root extract consumption was associated with reduced atherogenic modiﬁcations of LDL,
including reduced oxidation, reduced CS binding ability (retention) and aggregation, reduced plasma lipid levels, and reduced systolic blood pressure.
What Licorice benefits where discovered in the clinical study?
Coronary artery disease develops as a result of risk factors such as increased plasma low-density lipoprotein (LDL) level and hypertension or LDL atherogenic modiﬁcations such as retention, oxidation, and aggregation. During early atherogenesis, circulating LDLs invade the arterial wall, where it binds to extracellular matrix proteoglycans, a process known as “LDL retention”.
1 LDL retention in the arterial wall may be a prerequisite to lipoprotein oxidative modiﬁcation because retention of LDL to arterial proteoglycans increases its susceptibility to oxidation.
2 The process of LDL oxidation appears to occur within the artery wall, and all major artery wall cells including endothelial cells, smooth muscle cells and monocyte-derived macrophages, can oxidize LDL.
3 Extensive oxidation of LDL also leads to its aggregation,
4 and oxidized and aggregated LDL have been found in atherosclerotic lesions.
5 These LDL modiﬁcations are considered atherogenic because they contribute to macrophage cholesterol accumulation and foam cell formation, the hallmark of early atherosclerosis.
High-density lipoprotein (HDL), in contrast, is associated with antiatherogenic activity, and HDL levels are inversely related to the risk of developing atherosclerosis.
Paraoxonase (PON1) is an enzyme physically associated in serum with HDL and has been shown to protect LDL and HDL against oxidation.
6 Consumption of polyphenolic ﬂavonoids in the diet was inversely associated with morbidity and mortality from coronary heart disease.7 Polyphenolic ﬂavonoids may prevent coronary artery disease by reducing plasma cholesterol levels and their ability to inhibit LDL oxidation.
The antioxidant activity of ﬂavonoids is related to their chemical structure as proven in privious studies on mice and human.
Licorice root derived from the plant Glycyrrhiza glabra is used widely in Asia as a sweetener or a spice. Licorice root contains ﬂavonoids from the ﬂavan and chalcone subclasses, which have lipophilic characteristics and antioxidative properties.
Among several ﬂavonoids that were isolated and puriﬁed from licoriceroot extract, the isoﬂavan glabridin constituted the major ﬂavonoid.20 We previously demonstrated that in vitro licorice extract and puriﬁed glabridin protect LDL from oxidation induced by copper ions or free radical–generating systems.21 Mechanistic studies have shown that licorice-derived glabridin binds to the LDL particle and protects it from oxidation because of its capacity to scavenge free radicals.21,22 Structural studies have found that the antioxidant effect of glabridin resides mainly in the 2-hydroxyl group of the isoﬂavan ring B.23 Glabridin accumulates in macrophages and inhibits cell-mediated oxidation of LDL due to the inhibition of macrophage nicotinamide adenine dinucleotide phosphate oxidase activity.24 In vivo studies have shown that supplementation of licorice extract or glabridin to atherosclerotic mice deﬁcient in apolipoprotein E (E0) reduces the susceptibility of their LDL to oxidation and signiﬁcantly reduces the development of aortic atherosclerotic lesions.
In the present study we extended our investigation on the anti-atherogenic properties of licorice-root extract in moderately hypercholesterolemic patients.
We found that licorice-root extract consumption by mildly hypercholesterolemic patients increases the resistance of their LDL against major atherogenic modiﬁcations and moderately reduces their plasma lipid levels and systolic blood pressures.
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