News tagged with lipid

Related topics: cells · cell membrane · protein · diabetes · heart disease

Avocados may help combat the metabolic syndrome

A new review investigates the effects of avocados on different components of metabolic syndrome, which is a clustering of risk factors including high blood sugar, cholesterol, blood pressure, and body mass index. These risk ...

Apr 10, 2017
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Progress toward HIV cure highlighted

A comprehensive collection of articles describing the broad scope and current status of this global effort is published in a special issue of AIDS Research and Human Retroviruses.

Feb 10, 2017
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Lipid

Lipids are a broad group of naturally-occurring molecules which includes fats, waxes, sterols, fat-soluble vitamins (such as vitamins A, D, E and K), monoglycerides, diglycerides, phospholipids, and others. The main biological functions of lipids include energy storage, as structural components of cell membranes, and as important signaling molecules.

Lipids may be broadly defined as hydrophobic or amphiphilic small molecules; the amphiphilic nature of some lipids allows them to form structures such as vesicles, liposomes, or membranes in an aqueous environment. Biological lipids originate entirely or in part from two distinct types of biochemical subunits or "building blocks": ketoacyl and isoprene groups. Using this approach, lipids may be divided into eight categories: fatty acyls, glycerolipids, glycerophospholipids, sphingolipids, saccharolipids and polyketides (derived from condensation of ketoacyl subunits); and sterol lipids and prenol lipids (derived from condensation of isoprene subunits).

Although the term lipid is sometimes used as a synonym for fats, fats are a subgroup of lipids called triglycerides. Lipids also encompass molecules such as fatty acids and their derivatives (including tri-, di-, and monoglycerides and phospholipids), as well as other sterol-containing metabolites such as cholesterol. Although humans and other mammals use various biosynthetic pathways to both break down and synthesize lipids, some essential lipids cannot be made this way and must be obtained from the diet.

This text uses material from Wikipedia, licensed under CC BY-SA

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