PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 8381826-1 1993 We demonstrated recently that isoproterenol enhanced the cardiac voltage-dependent sodium currents (INa) in rabbit ventricular myocytes through dual G-protein regulatory pathways. Isoproterenol 30-43 LOW QUALITY PROTEIN: alpha-internexin Oryctolagus cuniculus 100-103 8381826-2 1993 In this study, we tested the hypothesis that isoproterenol reverses the sodium channel blocking effects of class I antiarrhythmic drugs through modulation of INa. Isoproterenol 45-58 LOW QUALITY PROTEIN: alpha-internexin Oryctolagus cuniculus 158-161 8381826-4 1993 Reversal of lidocaine suppression of INa by isoproterenol (1 microM) was significant at various concentrations of lidocaine (20, 65, and 100 microM, P < 0.05). Isoproterenol 44-57 LOW QUALITY PROTEIN: alpha-internexin Oryctolagus cuniculus 37-40 8381826-5 1993 The effects of isoproterenol were voltage dependent, showing reversal of INa suppression by lidocaine at normal and hyperpolarized potentials (negative to -80 mV) but not at depolarized potentials. Isoproterenol 15-28 LOW QUALITY PROTEIN: alpha-internexin Oryctolagus cuniculus 73-76 8381826-10 1993 These results suggest that enhancement of INa is an important mechanism by which isoproterenol reverses the effects of class I antiarrhythmic drugs. Isoproterenol 81-94 LOW QUALITY PROTEIN: alpha-internexin Oryctolagus cuniculus 42-45