title: Xanthones as inhibitors of microsomal lipid peroxidation and TNF-alpha induced ICAM-1 expression on human umbilical vein endothelial cells (HUVECs).
abstract: Xanthones bearing different functionalities, namely 1-hydroxyxanthone (1), 3-hydroxyxanthone (2), 1,4-dihydroxyxanthone (3), 2,6-dihydroxyxanthone (4), 1,2-diacetoxyxanthone (5), 2,6-diacetoxyxanthone (6), 3-methoxyxanthone (7), 1,3,7-trimethoxyxanthone (8) and 1,5-dihydroxy-6-methoxyxanthone (9) were synthesised and examined for their effect on nicotinamide adenine dinucleotide phosphate (NADPH)-catalysed liver microsomal lipid peroxidation and on tumour necrosis factor-alpha (TNF-alpha) induced expression of intercellular adhesion moledule-1 (ICAM-1) on endothelial cells, with a view to establish structure-activity relationship. Hydroxy- and acetoxyxanthones showed potent inhibitory effects on NADPH-catalysed lipid peroxidation and TNF-alpha induced expression of ICAM-1 on endothelial cells.
authors.affiliation: Molecular Immunology and Immunogenetics Laboratory, Centre for Biochemical Technology, Mall Road, -110 007, Delhi, India
authors.forename: Babita
authors.initials: B
authors.lastname: Madan
authors.forename: Ishwar
authors.initials: I
authors.lastname: Singh
authors.forename: Ajit
authors.initials: A
authors.lastname: Kumar
authors.forename: Ashok K
authors.initials: AK
authors.lastname: Prasad
authors.forename: Hanumantharao G
authors.initials: HG
authors.lastname: Raj
authors.forename: Virinder S
authors.initials: VS
authors.lastname: Parmar
authors.forename: Balaram
authors.initials: B
authors.lastname: Ghosh
mesh_terms: D000818:Animals; D004797:Enzyme-Linked Immunosorbent Assay; D006801:Humans; D066298:In Vitro Techniques; D018799:Intercellular Adhesion Molecule-1 / Q000096:biosynthesis*; D015227:Lipid Peroxidation / Q000187:drug effects*; D008861:Microsomes / Q000187:drug effects / Q000378:metabolism*; D008862:Microsomes, Liver / Q000378:metabolism; D009131:Muscle, Smooth, Vascular / Q000166:cytology / Q000187:drug effects / Q000378:metabolism*; D009249:NADP / Q000378:metabolism; D051381:Rats; D013329:Structure-Activity Relationship; D014409:Tumor Necrosis Factor-alpha / Q000037:antagonists & inhibitors* / Q000494:pharmacology; D014471:Umbilical Veins / Q000166:cytology / Q000187:drug effects / Q000378:metabolism*; D014966:Xanthenes / Q000138:chemical synthesis* / Q000494:pharmacology*
chemical_list: D014409:Tumor Necrosis Factor-alpha; D014966:Xanthenes; D018799:Intercellular Adhesion Molecule-1; D009249:NADP