2010
DOI: 10.1194/jlr.m009365
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Biological activities of 7-dehydrocholesterol-derived oxysterols: implications for Smith-Lemli-Opitz syndrome

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Cited by 118 publications
(170 citation statements)
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“…These results suggest that increased lipid Free-radical oxidation of 7-DHC provides assorted oxysterols, which have been shown to have important biological effects, such as cytotoxicity ( 15 ). In the context of SLOS, a mixture of 7-DHC-derived oxysterols induced changes in gene expression in control Neuro2a cells that are similar to those identifi ed in Dhcr7-defi cient Neuro2a cells ( 44 ). DHCEp is a major product of 7-DHC peroxidation and can metabolize to another oxysterol, DHCEO, a biomarker for 7-DHC oxidation that can affect neural development in a SLOS model mouse ( 16,45 ).…”
Section: Protein Adduction Increases In the Cellular Slos Modelsupporting
confidence: 52%
“…These results suggest that increased lipid Free-radical oxidation of 7-DHC provides assorted oxysterols, which have been shown to have important biological effects, such as cytotoxicity ( 15 ). In the context of SLOS, a mixture of 7-DHC-derived oxysterols induced changes in gene expression in control Neuro2a cells that are similar to those identifi ed in Dhcr7-defi cient Neuro2a cells ( 44 ). DHCEp is a major product of 7-DHC peroxidation and can metabolize to another oxysterol, DHCEO, a biomarker for 7-DHC oxidation that can affect neural development in a SLOS model mouse ( 16,45 ).…”
Section: Protein Adduction Increases In the Cellular Slos Modelsupporting
confidence: 52%
“…Some humans are deficient in 7-dehydrocholesterol reductase (DHCR7) and exhibit Smith-Lemli-Opitz syndrome (SLOS), 2 with elevated levels of 7-dehydrocholesterol and attenuated levels of cholesterol (3,(7)(8)(9)(10). 7-Dehydrocholesterol is exceptionally susceptible to free radical oxidation (11), and more than one dozen biologically active oxysterol products have been characterized from 7-dehydrocholesterol oxidation in solution (12)(13)(14). In particular, we have been interested in the enzymatic conversion of 7-dehydrocholesterol to oxysterols.…”
mentioning
confidence: 99%
“…A lipidperoxidáció során számos oxiszterol keletkezik belőle, amelyek feltételez-hetően kóroki szerepet játszanak a szindrómában megfigyelhető központi idegrendszeri tünetek kialakulásában [16,17,18].…”
Section: öSszefoglaló Közleményunclassified
“…A legújabb kutatások során a 7-DHC bizonyult a legreaktívabb lipidmolekulának szabad gyökökkel szemben, lipidperoxidációs folyamatok során számos oxiszterol keletkezik belőle in vitro és in vivo [16,17], amely terápiás szempontból az antioxidánsok potenciálisan előnyös hatását feltételezi [18]. SLO-szindrómás betegek fi broblastjaiban és DHCR-7-KO egerekben a vizsgált antioxidánsok közül az E-vitamin önmagában hatékonynak bizonyult, gátolta a 7-DHC-ből az oxiszterolok képző-dését és ezen keresztül helyreállította a lipid-bioszintézist érintő génexpressziós változásokat.…”
Section: úJ Eredmények úJ Kezelési Lehetőség?unclassified
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