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23 Αυγ 2021 · The compounds act in cells as fat-soluble antioxidants. α-tocopherol (Figure 2.233), the most active form of the vitamin, works 1) through the glutathione peroxidase protective system and 2) in membranes to interrupt lipid peroxidation chain reactions.
Fats also play important functional roles in sustaining nerve impulse transmission, memory storage, and tissue structure. Lipids are especially focal to brain activity in structure and in function, helping to form nerve cell membranes, insulate neurons, and facilitate the signaling of electrical impulses throughout the brain.
Fats serve useful functions in both the body and the diet. In the body, fat functions as an important depot for energy storage, offers insulation and protection, and play an important role in cell membranes.
In particular, the fatty acid composition of membrane lipids greatly influences membrane function. Here we consider the role of dietary fatty acid profile on membrane composition and, in turn, its impact on prevalent disease clusters of the metabolic syndrome and mental illness.
1 Μαΐ 2023 · Triglycerides store energy, provide insulation to cells, and aid in the absorption of fat-soluble vitamins. Fats are normally solid at room temperature, while oils are generally liquid. Lipids are an essential component of the cell membrane.
The lipids of plant and animal food raw materials are either structural lipids, i.e. components of cell and organelle membranes, or depot fat. Among the animal structural lipids are phospholipids and non-esterified cholesterol.
Transport of absorbed lipids from the plasma membrane to the endoplasmic reticulum involves intracellular trafficking proteins. Here, the absorbed fats are reassembled into chylomicrons and to a lesser extent VLDLs and secreted from the enterocytes.
