作者: F C Tanner , G Noll , C M Boulanger , T F Lüscher
关键词: Cardiology 、 Nitric oxide 、 Medicine 、 Coronary arteries 、 Bradykinin 、 Platelet 、 Internal medicine 、 Scavenger receptor 、 Low-density lipoprotein 、 Endothelium 、 Endothelium-derived relaxing factor 、 Endocrinology
摘要: BACKGROUNDWe studied the effects of low density lipoprotein (LDL) on endothelium function.METHODS AND RESULTSPorcine epicardial and intramyocardial coronary arteries suspended in organ chambers for isometric tension recording were exposed to LDL 2 hours then washed. In arteries, oxidized (30-300 micrograms/ml) but not native or lysolecithin inhibited endothelium-dependent relaxations serotonin, thrombin, aggregating platelets (5,000-75,000/microliter). Endothelium-dependent bradykinin A23187 endothelium-independent SIN-1 unaffected by LDL. had no appreciable effect serotonin. The response serotonin was completely prevented dextran sulfate (10 micrograms/ml). inhibitory persisted presence pertussis toxin. Similar lipoproteins, L-N...