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Astaxanthin, a Member of the Carotenoid Family, is a Powerful Antioxidant   
Date:
January 31, 2008 09:00 AM
Astaxanthin is a member of the carotenoid family responsible for the red color of many types of algae. Being a carotenoid, it is a powerful antioxidant and free radical scavenger as well as support proper eye function. However, such a bland statement belies the true worth of astaxanthin in its fight against free radicals. It is of particular benefit in its ability to absorb the high energy of singlet oxygen, releasing it as heat, and returning the singlet oxygen to its ground neutralized state. Singlet oxygen is a particularly harmful and reactive oxygen species of free radical that is formed in the body as part of our normal metabolism, and that contains a high level of free energy that can be used to oxidize and destroy the cells of your body. In achieving this, astaxanthin is regarded as one of the most potent plant derived antioxidants known, being up to ten times more active than beta carotene, Lutein or its cousin canthaxanthin. So why are antioxidants so valuable to our biochemistry and what would happen if they did not exist? Free radicals are thieves that use your body as their operating ground. They operate by stealing an electron from a molecule that comprises part of you, and in some cases when this occurs the cell from which the electron is removed is destroyed. Generally electrons go around in pairs, but occasionally an electron pair can lose one of the electrons during a chemical reaction. Many such reactions occur naturally inside the body, especially during the production of energy from blood sugars in the mitochondria, and such a molecule containing a single unpaired electron is called a free radical. Free radicals are also generated by the reactive components of many pollutants such as traffic fumes and cigarette smoke, tars and pesticides, and also by the effect of UV radiation in sunlight. The only purpose of a free radical is to steal an electron from the first source it can find. Such reactions occur very rapidly after the free radical has been generated, and if this electron belongs to another body cell, then the cell is destroyed leading to effects such as premature aging or even cancers. Free radical oxidation of the LDL lipids that carry cholesterol around the blood causes the deposition of fatty plaques inside arterial walls that eventually become constricted or even blocked, leading to heart disease or strokes. That is why antioxidants that destroy these free radicals are so prized, and the more of them that there are in your body then the less affect the free radicals will have on you. You will retain your youthful looks longer, and will be less liable to suffer from heart disease, cancers, circulation problems and conditions such as diabetes. Many abnormal conditions can be laid at the door of free radicals. The stronger the free radical, the more harm it can do to you and a strong antioxidant such as astaxanthin is a very powerful weapon in your armory against them. Astaxanthin is a member of the oxygenated xanthophylls, and its high level of antioxidant power likely comes from the ketonic and hydroxyl functional groups of the ionone ring structure. It is more polar than most carotenoids, and this is a likely reason for its ability to span the cell membrane layers, with the active groups close to the hydrophilic-hydrophobic interface. They are thus more readily available at the sites where most free radicals tend to be found and provide immediate protection to the cell membrane and also to the intracellular mitochondrial membrane. Many antioxidants destroy free radicals by donating an electron, and become oxidized themselves. Astaxanthin, however, does not do this, but instead adds the free radicals to its long double bonded chain hence avoiding oxidation and rendering it much more powerful than normal antioxidants. It is unusual among antioxidants in that it is also able to cross the blood-brain barrier, and so reduces oxidative stress that can cause neurological disorders in general, and also problems with eyesight. It can also attach itself to lipoproteins to enable it to be carried throughout the bloodstream, being available anywhere that free radicals are generated. The carotenoid is also active against active oxygen species that are responsible for inflammation. Another property is its ability to neutralize the oxygenated free radicals formed by the photo-oxidation properties of UVA and UVB radiation. Included in these are the previously mentioned highly reactive singlet oxygen and also triplet oxygen that astaxanthin is able to neutralize without becoming oxidized. In fact reactive oxygen species in general can cause oxidative stress, and they have been thought responsible for many forms of disease and health conditions, and the powerful effect of astaxanthin in targeting many of these has led it to be regarded as highly beneficial to the immune system and to health in general. Another benefit is the ability of the substance to help prevent the oxidation of high density lipoproteins (HDL) that are responsible for carrying cholesterol in the blood back to the liver for destruction. Free radical oxidation of HDL impairs its ability to transport cholesterol, and so decreasing the level of such free radical oxidation will by definition increase the quantity of good HDL available, and hence reduce the concentration of cholesterol in the blood. Studies have proved this to be the case, and astaxanthin supplements are very beneficial to those suffering from high blood cholesterol levels, and helps protect them from heart disease and strokes. The substance is naturally available from a wide range of marine sources, such as lobsters (where it was first discovered), shrimp, salmon, trout and in a wide variety of red and green algae. The substance is also used as a red pigment. Carotenoids are essential, meaning that they are not produced in the human body and can only be obtained in our diets. For that reason, the most convenient way to take it, apart from continually eating shrimp and lobster, is as a supplement. Astaxanthin is available either as a powerful antioxidant in its own right, or in combination with other substances with which it acts to provide a very strong deterrent to any free radicals that think they can freely roam your body.
(https://vitanetonline.com:443/forums/Index.cfm?CFApp=1&Message_ID=1711) GliSODin Anti-Aging and Antioxidant Protection  
Date:
December 19, 2005 08:47 AM
GliSODin Anti-Aging and Antioxidant Protection
In the time it takes you to finish reading this article, you, your body and your cells will have aged. Some, more than others. Nevertheless, every second that ticks away should serve as a reminder that our time here is temporary. How much time we actually end up with depends on many things. Diet. Lifestyle. Environment. Superoxide Dismutase? I’ll explain. What some of the healthiest individuals fail to realize is that our bodies age from the inside out. Aging is not the result of passing time, but rather the result of what we’re exposed to environmentally, physically and chemically. It is the integrity of our cells, not our clocks, that determine how smooth the aging process fares. Each day, we’re subjected to millions of elements that affect us in ways seldom seen, felt or noticed. From the moment we’re born, we rely on our cells to work around the clock - producing energy, fighting infections and sustaining life. These same cells eventually determine the rate at which we show (or hide) our age. Taking into consideration that our planet has no shortage of toxins & germs, the need to safeguard our cells becomes very real. Constant exposure to exhaust, secondhand smoke, heavy metals, lead, fluoride and uncountable other noxious compounds should ideally provide us with nothing more than a routine immune system workout. Unfortunately, over long periods they hinder our “resistance” abilities and become stepping stones to accelerated aging. Antioxidants. We’ve all heard the term before, and may even have a general understanding of their role. But to better grasp just how vital they are, it helps to know what’s happening at the cellular level. Free radicals are unstable molecular thieves that often lack electrons. To compensate, they rob healthy cells - a process better known as oxidation. Antioxidants work with the immune system to prevent oxidation, and clean up the mess it leaves behind. Hence, the name. There are two types. Exogenous antioxidants are derived from our diet and include vitamins A, E, and C along with others such as alpha lipoic acid, selenium, CoQ10, grape seed, pycnogenol and zinc. To date, we’ve been limited to exogenous antioxidants as a way to increase the rate at which our body wards off oxidation. They are not, however, our first line of defense. At birth, each and every one of us is equipped with three primary endogenous enzymatic antioxidants; SOD (Superoxide Dismutase), Glutathione Peroxidase (GPx) and Catalase. While both types of antioxidants are beneficial, we’ve become reliant on those from the diet to compensate for our inability to boost the effectiveness of our 3 primary antioxidants. For years, researchers have been examining ways to enhance the activity of our built-in bodyguards. One in particular, Superoxide Dismutase (SOD) has been of foremost interest. SOD targets what many researchers regard as one of our greatest health threats and aging accelerators - Superoxide radicals. These highly reactive, merciless molecules incite enormous amounts of oxidative stress and are capable of wreaking havoc on healthy cells. When cells are left unprotected by SOD, the results can be disastrous - respiratory problems, premature aging, memory loss, cardiovascular challenges, vision failure and joint structure damage, among others. Until now, we’ve been at the mercy of our natural SOD reserves to fight superoxides. Researchers have been working feverishly to produce an effective oral SOD supplement, but have continually encountered a frustrating hurdle - exposure to gastric acid denatures SOD, rendering it useless. As a result, the only effective way to supplement SOD was through injections. These, however, only yielded short-term spikes. And then something remarkable happened that changed everything. Nutrition scientists in France determined that by combining Cucumus melo (a melon high in SOD) with a wheat gliadin stabilizer, it would be possible to prevent SOD from deteriorating in the digestive tract, while preserving it in the blood for extended periods. Not only is this the answer to a puzzle that has plagued researchers, it’s a breakthrough that will impact the life of anyone seeking longevity and vitality. As the first proven oral SOD supplement ever introduced to the public, GliSODin® has taken antioxidant protection, immune support and antiaging science to an entirely new level. The primary function of GliSODin® is to scour the body for superoxide radicals and reduce them to less reactive ions that can be swept away; a process known as dismutation. In addition, GliSODin® reduces the oxidation vulnerability of healthy cells, protects mitochondrial activity and safeguards DNA structure. What’s most remarkable is that GliSODin® has actually been shown to stimulate the body’s own natural production of all three enzymatic antioxidants, including SOD. For the first time in history, we will have the ability to enhance the effectiveness of our body’s primary defense mechanism. New GliSODin® from NOW® represents the ultimate in antioxidant protection. By increasing one’s level of SOD while stimulating the natural production of Glutathione Peroxidase and Catalase, GliSODin® delivers antioxidant protection unlike any previously released dietary supplement. Remember, the aging process begins at a level that we simply can not see, the cellular level. Shielding your cells from superoxide damage is one of the smartest steps you can take against aging before your due time. GliSODin® has made this a reality.
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