title: Cellular sodium concentration and vasoconstrictor state in hypertension.
abstract: The sodium content of peripheral blood leucocytes was estimated in two separate investigations of the relationship between cellular sodium content and the vasoconstrictor state. In the first study various parameters of forearm blood flow were measured in a group of 31 normal subjects. A positive correlation was found between peripheral vascular resistance and leucocyte sodium content (p less than 0.05), and a negative correlation between venous compliance (VV60) and leucocyte sodium content (p less than 0.001). In the second study the leucocyte sodium content of 14 patients with essential hypertension was investigated before and after treatment with the calcium antagonist verapamil. The sodium content was found to be abnormally high, as previously described, and treatment with verapamil was found to reverse the defect. Both studies indicate a link between cell sodium content and the vasoconstrictor state, and the results are discussed in light of current theory.
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D005542:Forearm / Q000098:blood supply; D006801:Humans; D006973:Hypertension / Q000097:blood* / Q000503:physiopathology; D007962:Leukocytes / Q000378:metabolism; D008297:Male; D008875:Middle Aged; D012964:Sodium / Q000097:blood / Q000378:metabolism*; D014655:Vascular Resistance / Q000187:drug effects; D014661:Vasoconstriction; D014700:Verapamil / Q000494:pharmacology
chemical_list: D012964:Sodium; D014700:Verapamil