Myokard - Kalzium
Figure 1: Experimental assembly used for the measurement of (Ca++)i with C++-ionselective microelectrodes


Keywords: calcium,  experimental assembly,  Graphische Darstellung,  Kalzium,  microelectrodes,  Mikroelektrode,  myocardium,  Myokard,  Schema,  Versuchsanordnung

Mykard - Kalzium
Figure 2: Myocardial (Ca++)i in rat papillary muscle at rest. In those rats which received high dose vit. D3, (Ca++)i was increased over 160 times. This rather dramatic rise in (Ca++)i could be largely prevented by s.c. administration of diltiazem and verapamil.


Keywords: calcium,  Diagramm,  Diltiazem,  Diltiazem,  Kalzium,  microelectrodes,  Mikroelektrode,  myocardium,  Myokard,  Verapamil,  Verapamil

Myokard - Kalzium
Figure 3: Typical membrane potential (Vm), Ca++-electrode potential (VCaE) and differential potential (Vdiff) as well as resting tension in control conditions (left hand panel) and in vit. D3-intoxicated rats (right hand panel). Recordings from two individual experiments.


Keywords: calcium,  Diagramm,  Kalzium,  membrane potential,  Membranpotential,  myocardium,  Myokard,  Vitamin D,  Vitamin D

Myokard - Kalzium
Figure 4: Resting tension increases more than twofold in papillary muscels of vit. D3-intoxicated rats. The administration of diltiazem or verapamil attenuates this increase in resting tension.


Keywords: calcium,  Diagramm,  Diltiazem,  Diltiazem,  Kalzium,  myocardium,  Myokard,  Papillarmuskulatur,  papillary muscle,  resting tension,  Verapamil,  Verapamil,  Vitamin D,  Vitamin D