[Free radicals derived from oxygen and lipid peroxidation. Role in cellular biology and physiopathology]. 1986

J Emerit, and J Fechner, and A Galli, and J P Clavel, and F Congy

Lipid peroxidation results from the attack of membrane phospholipids by free radicals derived from oxygen. It plays a major role in normal cell life processes. Under physiological conditions, this attack is modulated by an enzymatic system (superoxide dismutase, catalase, glutathione peroxidase) and by a non-enzymatic system (vitamin E and others). Many pathological processes might be explained by a deficient protection system or by an imbalance between attack and protection. Lipid peroxidation is difficult to detect and measure, and the methods available still have low sensitivity.

UI MeSH Term Description Entries
D008054 Lipid Peroxides Peroxides produced in the presence of a free radical by the oxidation of unsaturated fatty acids in the cell in the presence of molecular oxygen. The formation of lipid peroxides results in the destruction of the original lipid leading to the loss of integrity of the membranes. They therefore cause a variety of toxic effects in vivo and their formation is considered a pathological process in biological systems. Their formation can be inhibited by antioxidants, such as vitamin E, structural separation or low oxygen tension. Fatty Acid Hydroperoxide,Lipid Peroxide,Lipoperoxide,Fatty Acid Hydroperoxides,Lipid Hydroperoxide,Lipoperoxides,Acid Hydroperoxide, Fatty,Acid Hydroperoxides, Fatty,Hydroperoxide, Fatty Acid,Hydroperoxide, Lipid,Hydroperoxides, Fatty Acid,Peroxide, Lipid,Peroxides, Lipid
D008563 Membrane Lipids Lipids, predominantly phospholipids, cholesterol and small amounts of glycolipids found in membranes including cellular and intracellular membranes. These lipids may be arranged in bilayers in the membranes with integral proteins between the layers and peripheral proteins attached to the outside. Membrane lipids are required for active transport, several enzymatic activities and membrane formation. Cell Membrane Lipid,Cell Membrane Lipids,Membrane Lipid,Lipid, Cell Membrane,Lipid, Membrane,Lipids, Cell Membrane,Lipids, Membrane,Membrane Lipid, Cell,Membrane Lipids, Cell
D010100 Oxygen An element with atomic symbol O, atomic number 8, and atomic weight [15.99903; 15.99977]. It is the most abundant element on earth and essential for respiration. Dioxygen,Oxygen-16,Oxygen 16
D010743 Phospholipids Lipids containing one or more phosphate groups, particularly those derived from either glycerol (phosphoglycerides see GLYCEROPHOSPHOLIPIDS) or sphingosine (SPHINGOLIPIDS). They are polar lipids that are of great importance for the structure and function of cell membranes and are the most abundant of membrane lipids, although not stored in large amounts in the system. Phosphatides,Phospholipid
D005609 Free Radicals Highly reactive molecules with an unsatisfied electron valence pair. Free radicals are produced in both normal and pathological processes. Free radicals include reactive oxygen and nitrogen species (RONS). They are proven or suspected agents of tissue damage in a wide variety of circumstances including radiation, damage from environment chemicals, and aging. Natural and pharmacological prevention of free radical damage is being actively investigated. Free Radical
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia

Related Publications

J Emerit, and J Fechner, and A Galli, and J P Clavel, and F Congy
January 1985, Pathologie-biologie,
J Emerit, and J Fechner, and A Galli, and J P Clavel, and F Congy
January 1994, Advances in pharmacology (San Diego, Calif.),
J Emerit, and J Fechner, and A Galli, and J P Clavel, and F Congy
April 1991, Pathologie-biologie,
J Emerit, and J Fechner, and A Galli, and J P Clavel, and F Congy
June 1987, Research communications in chemical pathology and pharmacology,
J Emerit, and J Fechner, and A Galli, and J P Clavel, and F Congy
January 1985, Intensive care medicine,
J Emerit, and J Fechner, and A Galli, and J P Clavel, and F Congy
January 1998, Seminars in reproductive endocrinology,
J Emerit, and J Fechner, and A Galli, and J P Clavel, and F Congy
January 1987, Acta anaesthesiologica Belgica,
J Emerit, and J Fechner, and A Galli, and J P Clavel, and F Congy
January 1992, Revista do Hospital das Clinicas,
J Emerit, and J Fechner, and A Galli, and J P Clavel, and F Congy
August 1993, Bratislavske lekarske listy,
J Emerit, and J Fechner, and A Galli, and J P Clavel, and F Congy
January 1990, Revista de medicina de la Universidad de Navarra,
Copied contents to your clipboard!