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Alternatively, fatty acids can be converted to lipid intermediates like diacylglycerol, ceramides and fatty acyl-CoAs. These lipid intermediates can impair cellular function, which is referred to as lipotoxicity. [2] Adipocytes, the cells that normally function as lipid store of the body, are well equipped to handle the excess lipids. Yet, too ...
Many lipid storage disorders can be classified into the subgroup of sphingolipidoses, as they relate to sphingolipid metabolism. Members of this group include Niemann-Pick disease, Fabry disease, Krabbe disease, Gaucher disease, Tay–Sachs disease, metachromatic leukodystrophy, multiple sulfatase deficiency, and Farber disease.
The surface of a curved lipid bilayer. Lipidology is the scientific study of lipids. Lipids are a group of biological macromolecules that have a multitude of functions in the body. [1] [2] [3] Clinical studies on lipid metabolism in the body have led to developments in therapeutic lipidology for disorders such as cardiovascular disease. [4]
No single mechanism leading to steatosis exists; rather, a varied multitude of pathologies disrupt normal lipid movement through the cell and cause accumulation. [7] These mechanisms can be separated based on whether they ultimately cause an oversupply of lipid which can not be removed quickly enough (i.e., too much in), or whether they cause a failure in lipid breakdown (i.e., not enough used).
Since lipids are hydrophobic molecules, they need to be solubilized before their metabolism can begin. Lipid metabolism often begins with hydrolysis, [7] which occurs with the help of various enzymes in the digestive system. [2] Lipid metabolism also occurs in plants, though the processes differ in some ways when compared to animals. [8]
Sphingolipidoses are a class of lipid storage disorders or degenerative storage disorders caused by deficiency of an enzyme that is required for the catabolism of lipids that contain ceramide, [1] also relating to sphingolipid metabolism.
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The gut microbiota, which is a population of microbes that live in the human digestive system, also has an important part in metabolism and generally has a positive function for its host. In terms of pathophysiological/mechanism interactions, an abnormal gut microbiota can play a role in metabolic disorder related obesity .