cardiovascular system
• ventricular myocytes exhibit increases in shortening fraction, rates of shortening and de-lengthening following maximal stimulation with the beta adrenergic agonist, isoproterenol, however, these increases are lower than increases experienced by controls
• basal cardiac function is similar to control
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• maximal isoproterenol stimulation has little effect on the Ca2+ amplitude peak and no effect on the decline of Ca2+ transient in myocytes
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muscle
• ventricular myocytes exhibit increases in shortening fraction, rates of shortening and de-lengthening following maximal stimulation with the beta adrenergic agonist, isoproterenol, however, these increases are lower than increases experienced by controls
• basal cardiac function is similar to control
|