Herbal Arctostaphylos uva-ursi may have a potential effect in reducing the risk and treatment of oxidative stress-related diseases, some studies suggested.
Oxidative stress is a production of the imbalance of ratio of free radicals and antioxidant in the bost body.
The imbalance of the ratio of free radicals and antioxidant in the bost body can be caused either by the overproduction of free radicals or antioxidant enzymes are suppressed by the outside sources.
However, most outside sources that suppress the levels of antioxidant enzymes also play an important role in stimulating the overexpression of free radicals, such as chemical toxins
Free radicals are unstable atoms with the unpaired electron in the outer ring. Therefore, in order for them to become stable, free radical either donates or steals an electron from stable molecules, leading to a chain of reaction that facilitates the onset of oxidative stress.
The chain once starts, it can not stop until the electron on the outer ring is paired or inhibited by antioxidant.
Free radical has been known to cause oxidative damage to the enzymes, other protein, unsaturated fatty acid, phospholipids, DNA and RNA.
Antioxidants are stable molecules found abundantly in fruits, vegetable, and herbal medicine.
If oxidative stress-related diseases are associated with the overproduction of free radicals, then long-term intake of a healthy diet high in fruits, vegetable and less in red meat and saturated and trans fat and processed foods can reduce the risk of the diseases in the healthy individuals.
Dr. Halliwell B, in the study to reaffirm the effect of healthy dietary patterns against the onset of oxidative stress said, " diet-derived antioxidants may be particularly important in protecting against these diseases" and
Arctostaphylos uva-ursi is one of the species of Bearberry, in the genus Arctostaphylos, belonging to the family Ericaceae, native to northern North America, Asia, and Europe.
The herb has been used in traditional medicine as a diuretic agent and to treat urinary problems, including bladder infections, kidney infection, kidney stone, pelvic pain, etc.
The herbal plant contains arbutin, ursolic acid, tannic acid, gallic acid, some essential oil and resin, hydroquinones tannins, phenolic glycosides, and flavonoids.
In the examining the Dr. Bol'shakova IV, the lead author at the Emanuel Institute of Biochemical Physics claim, that Arctostaphylos uva.processes a significant antioxidant property in the inhibition of free radicals generation, researchers launched an investigation to evaluate the concentration of compound that inhibited cell growth by 50% (IC(50)) of a range of phytochemicals and plant extracts.
Injection of the extracts of A. patula showed potent inhibition against tyrosinase, the enzyme that cause oxidation of the skin pigment.
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Kyle J. Norton (Scholar, Master of Nutrition, All right reserved)
Health article writer and researcher; Over 10.000 articles and research papers have been written and published online, including worldwide health, ezine articles, article base, health blogs, self-growth, best before it's news, the karate GB daily, etc.,.
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Some articles have been used as references in medical research, such as international journal Pharma and Bioscience, ISSN 0975-6299.
(1) [Antioxidant properties of plant extracts].[Article in Russian] by Bol'shakova IV, Lozovskaia EL, Sapezhinskiĭ II. (PubMed)
(2) Modulatory effects of resveratrol, citroflavan-3-ol, and plant-derived extracts on oxidative stress in U937 cells by O'Brien NM, Carpenter R, O'Callaghan YC, O'Grady MN, Kerry JP. (PubMed)
(3) Studies of cuticle drugs from natural sources. IV. Inhibitory effects of some Arctostaphylos plants on melanin biosynthesis. by Matsuda H, Higashino M, Nakai Y, Iinuma M, Kubo M, Lang FA. (PubMed)