Table 1. EC 50 for KCl- and... | Rockefeller University Press

Table 1.

EC₅₀ for KCl- and 4-cmc–induced Ca²⁺ release from myotubes from human quadriceps, orbicularis oculi, and EOMs

Tissue of origin	KCl EC₅₀	4-cmc EC₅₀^{^a}
	mM	µM
Quadriceps	16.0 ± 2.0	234.0 ± 58
Orbicularis oculi	19.5 ± 4.0	206.6 ± 24^{^b}
EOM	10.2 ± 5.0	332.0 ± 26

Tissue of origin	KCl EC₅₀	4-cmc EC₅₀^{^a}
	mM	µM
Quadriceps	16.0 ± 2.0	234.0 ± 58
Orbicularis oculi	19.5 ± 4.0	206.6 ± 24^{^b}
EOM	10.2 ± 5.0	332.0 ± 26

ANOVA did not reveal any differences in the EC₅₀ to KCl between the three types of myotubes. Significant differences were obtained in the EC₅₀ to 4-cmc, and the Bonferroni post hoc test confirmed the difference to be significant between EOM- and orbicularis oculi–derived myotubes.

P < 0.02.

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