Why the study?
Do paramyotonia congenita mutations R1448C and T1313M alter sodium channel inactivation compared to wild-type in Xenopus oocytes?
Population
Xenopus laevis oocytes coinjected with both alpha- and beta-subunits of human skeletal muscle sodium channels
Comparison
Paramyotonia congenita mutations R1448C and T1313M vs Wild-type human skeletal muscle sodium channels
Design
Preclinical
Authors
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Supports mechanistic basis for hyperexcitability in paramyotonia congenita; hypothesis-generating and requires validation before clinical translation.
Do paramyotonia congenita mutations R1448C and T1313M alter sodium channel inactivation compared to wild-type in Xenopus oocytes?
Paramyotonia congenita mutations R1448C and T1313M cause slowed open-state inactivation and higher channel availability during high-frequency activity, providing a mechanistic explanation for phenotypic hyperexcitability.
Richmond et al. (1997) studied this question.
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