About the Product
Life Pro Nutrition Vitamin E 400 IU is a dietary supplement in softgels with 400 IU of vitamin E per capsule, in maximum purity, within a soybean oil matrix that ensures the stability and absorption of this fat-soluble vitamin. Vitamin E is a term encompassing a group of 8 fat-soluble compounds (4 tocopherols and 4 tocotrienols, in alpha, beta, gamma, and delta forms) with antioxidant properties, with alpha-tocopherol being the form with the highest biological activity in humans and the reference form for calculating IU. The hermetically sealed softgel format protects vitamin E from oxidation by air and light, maintaining the compound's antioxidant potency intact until consumption. 1 softgel/day with a meal. 100 softgels (100 days). Contains soy and gelatin.
Benefits
The fat-soluble antioxidant of cell membranes: the unique role of vitamin E in lipids:
Vitamin E (alpha-tocopherol) has a unique antioxidant property that distinguishes it from all other antioxidants in the body: it is the main fat-soluble antioxidant of cell membranes, where it is incorporated into phospholipid bilayers and specifically protects the polyunsaturated fatty acids (PUFAs) of membranes against lipid peroxidation. Lipid peroxidation is a chain reaction initiated by free radicals (especially the hydroxyl radical, •OH) that attack the double bonds of membrane PUFAs, generating peroxyl radicals (ROO•) that propagate the chain reaction by autocatalytically oxidizing adjacent PUFAs. Alpha-tocopherol interrupts this chain by donating a hydrogen atom to the peroxyl radical (ROO• + alpha-tocopherol → ROOH + tocopheryl radical), converting itself into a tocopheryl radical (TocoO•) which is much less reactive and does not propagate the chain. The tocopheryl radical is subsequently regenerated by vitamin C (ascorbic acid) at the membrane/cytoplasm interface, restoring active alpha-tocopherol in a vitamin E/vitamin C antioxidant regeneration cycle. This mechanism makes vitamin E and vitamin C an indispensable synergistic antioxidant pair: vitamin E protects lipid membranes where water-soluble vitamin C cannot act, and vitamin C regenerates oxidized tocopherol back to its active form.
Protection of LDL-cholesterol against oxidation: the most documented cardiovascular mechanism:
One of the most studied properties of vitamin E in a cardiovascular context is the protection of LDL lipoproteins against oxidation. LDL particles transport cholesterol and fatty acids in the bloodstream and are rich in PUFAs (especially linoleic acid, 18:2n-6). The oxidation of LDL by ROS in the arterial subendothelial space is a critical step in the formation of atherosclerosis plaques: oxidized LDL (ox-LDL) is recognized by macrophage scavenger receptors (which are not regulated by negative feedback, unlike conventional LDL receptors), resulting in unlimited cholesterol uptake by macrophages and their transformation into foam cells, the core of atherosclerotic plaques. Vitamin E, by inhibiting the oxidation of LDL PUFAs, reduces the formation of ox-LDL and can thus contribute to cardiovascular health. EFSA has approved the health claim that vitamin E contributes to the protection of cells from oxidative damage.
Immune health: the role of alpha-tocopherol in T lymphocyte function:
Vitamin E has documented immunomodulatory effects, especially on T lymphocytes. The membrane of T lymphocytes is particularly rich in PUFAs and vulnerable to lipid peroxidation. Vitamin E depletion in T lymphocytes compromises signaling via the TCR receptor (whose activation requires the integrity of membrane "lipid rafts," domains rich in cholesterol and unsaturated phospholipids) and the production of IL-2 (the essential cytokine for clonal proliferation of T lymphocytes in response to antigens). Studies in the elderly (a group at higher risk of vitamin E deficiency and immunosenescence) have documented that vitamin E supplementation improved cellular immunity parameters, including response to vaccination and resistance to upper respiratory tract infections.
Anti-inflammatory properties: COX inhibition and modulation of inflammatory signaling:
In addition to its antioxidant mechanism, alpha-tocopherol has direct anti-inflammatory effects independent of its antioxidant function. It inhibits protein kinase C (PKC), a signaling enzyme that activates multiple pro-inflammatory pathways. It also inhibits phospholipase A2 (PLA2, the enzyme that releases arachidonic acid from membrane phospholipids, providing the substrate for prostaglandin and leukotriene synthesis). Gamma-vitamin E (less abundant than alpha-tocopherol but present in natural spectrum vitamin E supplements) has additional anti-inflammatory properties via inhibition of inducible nitric oxide synthase (iNOS) synthesis and sequestration of reactive nitrogen species (RNS).
Skin health: the dermal antioxidant with multiple applications:
Vitamin E is the most abundant fat-soluble antioxidant in human skin, concentrated especially in the stratum corneum (superficial layer of the epidermis) and in the sebaceous glands. It protects keratinocytes and dermal fibroblasts from UV radiation-induced lipid peroxidation (which generates free radicals in the skin), oxidative stress from air pollution (ozone, fine particles), and oxidative skin aging. At the dermal level, vitamin E also supports collagen synthesis (by protecting fibroblasts from oxidative damage) and the maintenance of the skin barrier (by preserving the PUFAs of ceramides and phospholipids of corneocyte membranes).
Prevention of excessive coagulation: the antiplatelet effect of vitamin E:
Vitamin E has moderate platelet aggregation inhibitory effects via reduction of thromboxane A2 (TXA2, the main promoter of platelet aggregation) production and via PKC inhibition in platelets (which is necessary for platelet activation by agonists such as collagen and ADP). This antiplatelet effect contributes to cardiovascular health by reducing the risk of thrombus formation, but it can also potentiate the anticoagulant effect of drugs like warfarin at high doses.
Softgel format with soybean oil: optimized absorption of the fat-soluble vitamin:
As with Vitamin D3 with Olive Oil, the softgel format with a lipid matrix (in this case soybean oil) is ideal for fat-soluble vitamins like vitamin E: vitamin E is already dissolved in a lipid vehicle that facilitates its incorporation into intestinal micelles formed by bile salts and pancreatic lipase, maximizing intestinal absorption regardless of the fat content of the meal with which it is taken. Soybean oil is also a source of natural gamma-tocopherol that complements the alpha-tocopherol in the formula.
Usage
Recommended dose: Take 1 softgel/day with a meal containing some fat to optimize absorption. Can be taken with any meal of the day. 100 softgels = 100 days of supplementation with 1 softgel/day.
