Figure 1From: Characterization of maturation of neuronal voltage-gated sodium channels SCN1A and SCN8A in rat myocardium SCN1A mRNA expression. Expression of SCN1A mRNA increased dramatically after birth and declined significantly with postnatal development. At the age 21 days and 6 weeks, respectively, mRNA expression in the ventricular myocardium exceeded atrial expression significantly (*p < 0.05; **p < 0.01; # p < 0.001). E17, embryonic day 17 after gestation; P1, 1st postnatal day; P7, 7th postnatal day, P21v., 21st postnatal day, ventricular myocardium; P21a., 21st postnatal day, atrial myocardium; W6v., 6th postnatal week, ventricular myocardium; W6a., 6th postnatal week, atrial myocardium; P, protein level; R, mRNA level.Back to article page