Effects of calcium antagonists on the erythrocyte membrane.
The effects of dihydropyridine compounds nimodipine, nicardipine and NB818 (isopropyl methyl-6-carbamoyloxymethyl-4-(2,3-dichlorophenyl)-1,4-dihydro-2-methyl- 3,5- pyridine-dicarboxylate) on erythrocyte membranes have been studied. These compounds showed protective effects against hypotonic haemolysis, but not against heat-induced haemolysis. An increase in deformability of erythrocytes by these calcium antagonists was observed using a capillary tube centrifugal method. The erythrocytes showed slight stomatocytosis after 30 min of incubation with calcium antagonists, but did not show significant changes in mean corpuscular volume and ATP levels.
Abe
H
H
First Department, Kinki University, Osaka, Japan.
Katada
K
K
Orita
M
M
Nishikibe
M
M
D000818:Animals; D002121:Calcium Channel Blockers / Q000494:pharmacology*; D004095:Dihydropyridines / Q000494:pharmacology*; D004910:Erythrocyte Membrane / Q000187:drug effects*; D006461:Hemolysis / Q000187:drug effects; D008297:Male; D008855:Microscopy, Electron, Scanning; D009529:Nicardipine / Q000494:pharmacology*; D009553:Nimodipine / Q000494:pharmacology*; D051381:Rats; D011919:Rats, Inbred Strains
D002121:Calcium Channel Blockers; D004095:Dihydropyridines; D009553:Nimodipine; C048962:NPK 1886; D009529:Nicardipine