Activation of human peripheral monocytes by angiotensin II.
This study has investigated the ability of the vasoconstrictor peptide angiotensin II to activate human peripheral blood monocytes. Activation was monitored by measuring both the release of tumor necrosis factor alpha from monocytes and their adhesion to monolayers of human endothelial cells. Angiotensin II-elicited activation of monocytes was dose-dependent (half-maximally effective concentration approximately 0.2 nM), saturable (maximally effective concentration approximately 5 nM), and sensitive to inhibition by the angiotensin type 1 receptor antagonist ZD 7155. Such direct actions imply that angiotensin II is an important candidate stimulus for the subendothelial infiltration of monocytes observed in atherogenesis and hypertension.
Hahn
A W
AW
Department of Research, University Clinics Basel, Switzerland.
Jonas
U
U
Bühler
F R
FR
Resink
T J
TJ
D000804:Angiotensin II / Q000494:pharmacology*; D001483:Base Sequence; D015139:Blotting, Southern; D002448:Cell Adhesion; D002478:Cells, Cultured; D004730:Endothelium, Vascular / Q000502:physiology; D015870:Gene Expression; D006801:Humans; D008070:Lipopolysaccharides / Q000494:pharmacology; D008969:Molecular Sequence Data; D009000:Monocytes / Q000187:drug effects / Q000378:metabolism*; D009131:Muscle, Smooth, Vascular / Q000378:metabolism; D016133:Polymerase Chain Reaction; D012313:RNA / Q000032:analysis / Q000378:metabolism; D012333:RNA, Messenger / Q000378:metabolism; D014409:Tumor Necrosis Factor-alpha / Q000378:metabolism
D008070:Lipopolysaccharides; D012333:RNA, Messenger; D014409:Tumor Necrosis Factor-alpha; D000804:Angiotensin II; D012313:RNA