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Effect of Sepiapterin, 7,8-Dihydrobiopterin, 5,6,7,8-Tetrahydrobiopterin and Xanthopterin on Cholesterol and Phospholipid Content and Phospholipid Biosynthesis in vitro

Effect of Sepiapterin, 7,8-Dihydrobiopterin, 5,6,7,8-Tetrahydrobiopterin and Xanthopterin on... Summary Incorporation of fatty acids into phospholipids has been investigated using samples of rat live tissue homogenate, Krebs-Ringer-phosphate buffer (pH = 7A) containing 0.3% albumin, farry acid mixture and glycerol. The addition of sepiapterin, 7,8-dihydrobiopterin and 5.6.7.8-tetrahydrobiopterin (5 and 30 pmol g wet weight) to incubation medium induced a decrease of saturated (stearic acid) and an increase of polyunsaturated (arachidonic acid) fatty acids incorporation into phospholipids. Cholesterol content decreased, but phospholiplid content did not change in samples containing sepiapterin, 7,8-dihydrobiopterin and 5,6,7,8-tetrahydrobiopterin. No changes of fatty acid incorporation into phospholipids as well as of the content of cholesterol and phospholipids were observed in samples after the addition of xanthopterin (4 and 20 nmol/g wet weight) to incubation medium for phospholipid biosynthesis in vitro. The observations made by incubation with 7,8-dihydrobiopterin, 5,6,7,8-tetrahydrobiopterin and sepiapterin where in opposite to those made earlier employing neopterin and using the same incubation procedure. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Pteridines de Gruyter

Effect of Sepiapterin, 7,8-Dihydrobiopterin, 5,6,7,8-Tetrahydrobiopterin and Xanthopterin on Cholesterol and Phospholipid Content and Phospholipid Biosynthesis in vitro

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References (25)

Publisher
de Gruyter
Copyright
Copyright © 1995 by the
ISSN
0933-4807
eISSN
2195-4720
DOI
10.1515/pteridines.1995.6.2.69
Publisher site
See Article on Publisher Site

Abstract

Summary Incorporation of fatty acids into phospholipids has been investigated using samples of rat live tissue homogenate, Krebs-Ringer-phosphate buffer (pH = 7A) containing 0.3% albumin, farry acid mixture and glycerol. The addition of sepiapterin, 7,8-dihydrobiopterin and 5.6.7.8-tetrahydrobiopterin (5 and 30 pmol g wet weight) to incubation medium induced a decrease of saturated (stearic acid) and an increase of polyunsaturated (arachidonic acid) fatty acids incorporation into phospholipids. Cholesterol content decreased, but phospholiplid content did not change in samples containing sepiapterin, 7,8-dihydrobiopterin and 5,6,7,8-tetrahydrobiopterin. No changes of fatty acid incorporation into phospholipids as well as of the content of cholesterol and phospholipids were observed in samples after the addition of xanthopterin (4 and 20 nmol/g wet weight) to incubation medium for phospholipid biosynthesis in vitro. The observations made by incubation with 7,8-dihydrobiopterin, 5,6,7,8-tetrahydrobiopterin and sepiapterin where in opposite to those made earlier employing neopterin and using the same incubation procedure.

Journal

Pteridines – de Gruyter

Published: May 1, 1995

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