Ca2+-activated K+ channels regulate action potential repolarization in urinary bladder smooth muscle

American Journal of Physiology - Cell Physiology

Volumn 273, Issue 1 42-1, 1997, Pages

  Heppner, Thomas J ^a   Bonev, Adrian D ^a   Nelson, Mark T ^a  

^a University of Vermont Colchester Research Facility   (United States)

Author keywords

Iberiotoxin; Membrane potential

Indexed keywords

POTASSIUM CHANNEL;

ANIMAL TISSUE; ARTICLE; BLADDER MUSCLE; CALCIUM TRANSPORT; CELL MEMBRANE POTENTIAL; GUINEA PIG; MEMBRANE STEADY POTENTIAL; MUSCLE ACTION POTENTIAL; NONHUMAN; PRIORITY JOURNAL; REPOLARIZATION;

ANIMALIA; CAVIA PORCELLUS; SUS SCROFA;

EID: 0030860425     PISSN: 03636143     EISSN: None     Source Type: Journal    
DOI: 10.1152/ajpcell.1997.273.1.c110     Document Type: Article

References (39)

1. + channels as modulators of human myometrial contractile activity. Am. J. Physiol. 265 (Cell Physiol. 34): C976-C985, 1993.
2. Barrett, J. N., K. L. Magleby, and B. S. Pallotta. Properties of single calcium-activated potassium channels in cultured rat muscle. J. Physiol. (Lond.) 331: 211-230, 1982.
3. Benham, C. D., T. B. Bolton, R. J. Lang, and T. Takewaki. Calcium-activated potassium channels in single smooth muscle cells of rabbit jejunum and guinea-pig mesenteric artery. J. Physiol. (Lond.) 371: 45-67, 1986.
4. Blatz, A. L., and K. L. Magleby. Ion conductance and selectivity of single calcium-activated potassium channels in cultured rat muscle. J. Gen. Physiol. 84: 1-23, 1984.
5. Bolton, T. B. Electrophysiology of the intestinal musculature. In: Handbook of Physiology. The Gastrointestinal System. Motility and Circulation. Bethesda, MD: Am. Physiol. Soc., 1989, sect. 6, vol. I, pt. 1, chapt. 5, p. 217-250.
6. Bonev, A. D., and M. T. Nelson. ATP-sensitive potassium channels in smooth muscle cells from guinea pig urinary bladder. Am. J. Physiol. 264 (Cell Physiol. 33): C1190-C1200, 1993.
7. Brayden, J. E., and M. T. Nelson. Regulation of arterial tone by activation of calcium-dependent potassium channels. Science 256: 532-535, 1992.
8. + channel. Biophys. J. 63: 583-590, 1992.
9. + channels in electrical activity of longitudinal and circular muscle layers of canine colon. Am. J. Physiol. 268 (Cell Physiol. 37): C619-C627, 1995.
10. Carl, A., H. K. Lee, and K. M. Sanders. Regulation of ion channels in smooth muscles by calcium. Am. J. Physiol. 271 (Cell Physiol. 40): C9-C34, 1996.
11. Creed, K. E. Functional diversity of smooth muscle. Br. Med. Bull. 35: 243-247, 1979.
12. Foster, C. D., K. Fujii, J. Kingdon, and A. F. Brading. The effect of cromakalim on the smooth muscle of the guinea-pig urinary bladder. Br. J. Pharmacol. 97: 281-291, 1989.
13. Fujii, K., C. D. Foster, A. F. Brading, and A. B. Parekh. Potassium channel blockers and the effects of cromakalim on the smooth muscle of the guinea-pig bladder. Br. J. Pharmacol. 99: 779-785, 1990.
14. 2+ transients in myocytes from the guinea-pig urinary bladder. J. Physiol. (Lond.) 458: 119-137, 1992.
15. Giangiacomo, K. M., M. L. Garcia, and O. B. McManus. Mechanism of iberiotoxin block of the large-conductance calcium-activated potassium channel from bovine aortic smooth muscle. Biochemistry 31: 6719-6727, 1992.
16. Hamil, O. P., A. Marty, E. Neher, B. Sakmann, and F. J. Sigworth. Improved patch-clamp techniques for high-resolution current recording from cells and cell-free membrane patches. Pflügers Arch. 391: 85-100, 1981.
17. 2+] signals (myocytes from guinea-pig urinary bladder). Adv. Exp. Med. Biol. 311: 369-371, 1992.
18. + channel inhibitor. J. Pharmacol. Exp. Ther. 255: 697-705, 1990.
19. Klöckner, U., and G. Isenberg. Action potentials and net membrane currents of isolated smooth muscle cells (urinary bladder of the guinea-pig). Pflügers Arch. 405: 329-339, 1985.
20. Lang, R. J. Identification of the major membrane currents in freshly dispersed single smooth muscle cells of guinea-pig ureter. J. Physlol. (Lond.) 412: 375-395, 1989.
21. Langton, P. D., M. T. Nelson, Y. Huang, and N. B. Standen. Block of calcium-activated potassium channels in mammalian arterial myocytes by tetraethylammonium ions. Am. J. Physiol. 260 (Heart Circ. Physiol. 29): H927-H934, 1991.
22. Latorre, R., A. Oberhauser, P. Labarca, and O. Alvarez. Varieties of calcium-activated potassium channels. Annu. Rev. Physiol. 51: 385-399, 1989.
23. + channels in spontaneous electrical and mechanical activity of smooth muscle in the guinea-pig mesotubarium. J. Physiol. (Lond.) 433: 327-340, 1991.
24. 2+ concentration jumps in excised inside-out multichannel patches (myocytes from guinea pig urinary bladder). J. Gen. Physiol. 99: 841-862, 1992.
25. Methfessel, C., and G. Boheim. The gating of single calcium-dependent potassium channels is described by an activation/ blockade mechanism. Biophys. Struct. Mech. 9: 35-60, 1982.
26. 2+ binding reactions. J. Gen. Physiol. 82: 511-542, 1983.
27. 2+-activated potassium channels and ATP-sensitive potassium channels as modulators of vascular tone. Trends Cardiovasc. Med. 3: 54-60, 1993.
28. Nelson, M. T., H. Cheng, M. Rubart, L. F. Santana, A. D. Bonev, H. J. Knot, and W. J. Lederer. Relaxation of arterial smooth muscle by calcium sparks. Science 270: 633-637, 1995.
29. Nelson, M. T., and J. M. Quayle. Physiological roles and properties of potassium channels in arterial smooth muscle. Am. J. Physiol. 268 (Cell Physiol. 37): C799-C822, 1995.
30. Osa, T., H. Inoue, and K. Okabe. Effects of porcine relaxin on contraction, membrane response and cyclic AMP content in rat myometrium in comparison with the effects of isoprenaline and forskolin. Br. J. Pharmacol. 104: 950-960, 1991.
31. Petersen, O. H., and Y. Maruyama. Calcium-activated potassium channels and their role in secretion. Nature 307: 693-696, 1984.
32. Sakmann, B, and E. Neher. Geometric parameters of pipettes and membrane patches. In: Single-Channel Recording (2nd ed.), edited by B. Sakmann and E. Neher. New York: Plenum, 1995, p. 637-650
33. Sanders, K. M. Ionic mechanisms of electrical rhythmicity in gastrointestinal smooth muscles. Annu. Rev. Physiol. 54: 439-453, 1992.
34. Sanders, K. M., and N. G. Publicover. Electrophysiology of the gastric musculature. In: Handbook of Physiology. The Gastrointestinal System. Motility and Circulation. Bethesda, MD: Am. Physiol. Soc., 1989, sect. 6, vol. I, pt. 1, chapt. 5, p. 187-216.
35. Somlyo, A. P., and A. V. Somlyo. Signal transduction and regulation in smooth muscle. Nature 372: 231-236, 1994.
36. Suarez-Kurtz, G., Garcia, M. L., and G. J. Kaczorowski. Effects of charybdotoxin and iberiotoxin on the spontaneous motility and tonus of different guinea pig smooth muscle tissues. J. Pharmacol. Exp. Ther. 259: 439-443, 1991.
37. Van Helden, D. F. Pacemaker potentials in lymphatic smooth muscle of the guinea-pig mesentery. J. Physiol. (Lond.) 471: 465-479, 1993.
38. Zhang, L., A. D. Bonev, M. T. Nelson, and G. M. Mawe. Ionic basis of the action potential of guinea pig gallbladder smooth muscle cells. Am. J. Physiol. 265 (Cell Physiol. 34): C1552-C1561, 1993.
39. + channel modulators on detrusor and portal vein strips from guinea pigs. Pharmacology 45: 216-230, 1992.