the anthraquinones , doxorubicin , mitoxantrone , daunorubicin and rubidazone are shown to be potent stimulators of ca2+ release from skeletal muscle sarcoplasmic reticulum ( sr ) vesicles and to trigger transient contractions in chemically skinned psoas muscle fibers .
C0003174
anthraquinones
C0026259
mitoxantrone