... tropo-nin Islow. Troponin Ifast, however, is not changed in areciprocal manner, indicating that troponin Islowandtroponin Ifastrespond independently to distinct fastand slow signaling pathways ... 10–15 min, and then in ATP staining buffer (3.6 mm ATP, 20 mm barbital,18 mm CaCl2, pH 9.4) for 2 h. Incubation in 1% CaCl2for10 min was followed by incubation in 2% CoCl2for10 min and in ... specifica-tion is sensitive to nerve activity-induced intracellularCa2+[26], which regulates calcineurin ⁄ NFAT signaling [17,27], and calcineurin ⁄ NFAT signaling regulates thetranscript levels of...