Sarcoplasmic reticular Ca2+ uptake and Ca2+ release activities, protein content and mRNA levels in control and MI animals with or without ENP and LOS treatments for 4 weeks starting at 3 weeks after induction of MI

ParametersControlMIMI+ENPMI+LOS
A. Ca2+ uptake activity (nmol/mg per 2 min)110 ± 8.1563.5 ± 4.8*92 ± 6.382 ± 4.8
B. Ca2+ release activity (nmol/mg per 15 s)8.25 ± 0.324.95 ± 0.43*7.60 ± 0.377.20 ± 0.24
C. Protein content (% of control)
Ryanodine receptor10058.5 ± 1.5*85.9 ± 3.183.8 ± 2.2
Ca2+-stimulated ATPase10050.5 ± 2.5*78.2 ± 1.867 ± 2.5
Calsequestrin100105.2 ± 4.898.3 ± 4.796.9 ± 13.1
Phospholamban10069.1 ± 5.9*86.6 ± 4.480.8 ± 8.2
D. mRNA levels (% of control)
Ryanodine receptor10064.8 ± 5.3*84.75 ± 2.686.8 ± 4.5
Ca2+-stimulated ATPase10073.9 ± 4.1*86.7 ± 5.398.6 ± 6.4
Calsequestrin100105.4 ± 1.697.9 ± 7.197.4 ± 4.6
Phospholamban10078.3 ± 3.7*97.3 ± 5.792.0 ± 6.5

Values are mean ± SE of 7 animals in each group. Data are based on the analysis of the information in table 5 and figures 3 and 4 in our papers Shao et al. Am J Physiol Circ Physiol. 2005;288:H1674–82 [113] and Guo et al. Mol Cell Biochem. 2003;254:163–72 [118]. *P < 0.05 compared with control; P < 0.05 compared with MI group