What enzymes destroy free radicals?

Glutathione peroxidase (GPx) is an enzyme that is responsible for protecting cells from damage due to free radicals like hydrogen and lipid peroxides.

What protects the body from free radicals?

Antioxidants — such as vitamins C and E and carotenoids, which include beta-carotene, lycopene and lutein — help protect healthy cells from damage caused by free radicals.

What is an antioxidant enzyme?

Antioxidant enzymes are proteins involved in the catalytic transformation of reactive oxygen species and their by-products into stable nontoxic molecules therefore representing the most important defense mechanism against oxidative stress-induced cell damage.

How do you neutralize free radicals?

Antioxidants neutralize free radicals by giving up some of their own electrons. In making this sacrifice, they act as a natural “off” switch for the free radicals. This helps break a chain reaction that can affect other molecules in the cell and other cells in the body.

How are phenols used to fight Ros RNS?

COX and LOX are the enzymatic activities responsible for the production of metabolites with capacity to increase the oxidative lesion in tissues. Some polyphenols have properties to inhibit the activities of COX and LOX [52].

What Vitamin donates electrons to neutralize free radicals?

As being a reducing substance and an electron donor, during free radical scavenging, vitamin C donates high-energy electrons to neutralize free radicals, and it is oxidized to dehydroascorbic acid.

Is alpha lipoic acid safe?

Alpha-lipoic acid is generally considered safe with little to no side effects. In some cases, people may experience mild symptoms like nausea, rashes, or itching. However, research shows that adults can take up to 2,400 mg without harmful side effects (38).

Is alpha tocopherol an antioxidant?

Alpha-tocopherol, one of the eight isoforms of vitamin E, is the most potent fat-soluble antioxidant known in nature.

Which phenol compound is used as an antioxidant?

catechin, epicatechin, quercetin and kaempferol (flavonoids), gallic acid, caffeic acid and coumaric acid (phenolic acids) and umbelliferone (coumarine)], catechins were the principal phenolic compounds. Catechins are reported to be the main phenolic compounds responsible for antioxidant activity of the tea.

What is polyphenols good for?

Research shows polyphenols can help manage blood pressure levels and keep your blood vessels healthy and flexible, promoting good circulation. They also help reduce chronic inflammation, another risk factor for heart disease. Polyphenols can reduce and help control your blood sugar levels.

What is the difference between lipoic acid and alpha-lipoic acid?

The main difference between alpha lipoic acid and R lipoic acid is that alpha-lipoic acid is a vitamin-like antioxidant while R-lipoic acid is the cis form of alpha-lipoic acid. Alpha-lipoic acid and R-lipoic acid are two types of compounds produced by cells. Both have structures similar to vitamins.

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