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Role of lipoprotein lipase in lipid metabolism
Umeå University, Faculty of Medicine, Department of Medical Biosciences, Physiological chemistry.
2016 (English)In: Current Opinion in Lipidology, ISSN 0957-9672, E-ISSN 1473-6535, Vol. 27, no 3, 233-241 p.Article, review/survey (Refereed) PublishedText
Abstract [en]

Purpose of review A major step in energy metabolism is hydrolysis of triacylglycerol-rich lipoproteins (TRLs) to release fatty acids that can be used or stored. This is accomplished by lipoprotein lipase (LPL) at 'binding lipolysis sites' at the vascular endothelium. A multitude of interactions are involved in this seemingly simple reaction. Recent advances in the understanding of some of these factors will be discussed in an attempt to build a comprehensive picture.

Recent findings The first event in catabolism of TRLs is that they dock at the vascular endothelium. This requires LPL and GPIHBP1, the endothelial transporter of LPL. Kinetic studies in rats with labeled chylomicrons showed that once a chylomicron has docked in the heart it stays for minutes and a large number of triacylglycerol molecules are split. The distribution of binding between tissues reflects the amount of LPL, as evident from studies with mutant mice. Clearance of TRLs is often slowed down in metabolic disease, as was demonstrated both in mice and men. In mice, this was directly connected to decreased amounts of endothelial LPL.

Summary The LPL system is central in energy metabolism and results from interplay between several factors. Rapid and exciting progress is being made.

Place, publisher, year, edition, pages
2016. Vol. 27, no 3, 233-241 p.
Keyword [en]
apolipoprotein C-II, cardiovascular disease, endothelial lipase, heparan sulfate proteoglycans, hepatic lipase, hypertriglyceridemia, lipoprotein lipase
National Category
Chemical Sciences
URN: urn:nbn:se:umu:diva-122548DOI: 10.1097/MOL.0000000000000297ISI: 000376386200005PubMedID: 27031275OAI: diva2:950194
Available from: 2016-07-28 Created: 2016-06-20 Last updated: 2016-07-28Bibliographically approved

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Olivecrona, Gunilla
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