A novel calcium-activated apamin-insensitive potassium current in pituitary gonadotrophs

Endocrinology

Volumn 138, Issue 7, 1997, Pages 2658-2664

  Vergara, Leoncio ^a   Rojas, Eduardo ^a   Stojilkovic, Stanko S ^a,b  

^a NATIONAL INSTITUTE OF DIABETES AND DIGESTIVE AND KIDNEY DISEASES   (United States)

^b EUNICE KENNEDY SHRIVER NATIONAL INSTITUTE OF CHILD HEALTH AND HUMAN DEVELOPMENT   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

APAMIN; GONADOTROPIN;

ANIMAL CELL; ARTICLE; BURST FORMING UNIT; CALCIUM MOBILIZATION; CALCIUM TRANSPORT; CELL SUBPOPULATION; DISSOCIATION CONSTANT; ENDOCRINE CELL; ENZYME ACTIVATION; HYPERPOLARIZATION; HYPOPHYSIS GONAD SYSTEM; MEMBRANE CONDUCTANCE; NONHUMAN; OSCILLATION; POTASSIUM CURRENT; PRIORITY JOURNAL; RAT;

EID: 0030922132     PISSN: 00137227     EISSN: None     Source Type: Journal    
DOI: 10.1210/endo.138.7.5220     Document Type: Article

References (43)

1. Stutzin A, Stojilkovic SS, Catt KJ, Rojas E 1989 Characteristics of two types of calcium channels in rat pituitary gonadotrophs. Am J Physiol 257:C865-C874
2. Marchetti C, Child's GV, Brown AM 1990 Voltage-dependent calcium currents in rat gonadotropes separated by centrifugal elutriation. Am J Physiol 258:E589-E596
3. 2+ channels in gonadotropin-releasing hormone-induced membrane potential changes in identified rat gonadotropes. Endocrinology 132:1475-1481
4. Bosma MM, Hille B 1992 Electrophysiological properties of a cell line of the gonadotrope lineage. Endocrinology 130:3411-3420
5. Heyward FM, Chen C, Clarke IJ 1995 Inward membrane currents and electrophysiological responses to GnRH in ovine gonadotropes. Neuroendocrinology 61:609-621
6. Price CV, Chang JP1993 Voltage-activated ionic currents in goldfish pituitary cells. Gen Comp Endocrinol 92:16-30
7. Stojilkovic SS, Kukuljan M, lida T, Rojas E, Catt KJ 1992 Integration of cytoplasmic calcium and membrane potential oscillations maintains calcium signaling in pituitary gonadotrophs. Proc Natl Acad Sei USA 89:4081-4085
8. Li Y-X, Rinzel J, Vergara L, Stojilkovic SS 1995 Spontaneous electrical and calcium oscillations in pituitary gonadotrophs. Biophys J 69:785-795
9. 2+ mobilization and Ca2t influx. Proc Natl Acad Sei USA 85:6566-6570
10. Stojilkovic SS, Merelli F, lida T, Krsmanovic LZ, Call KJ 1990 Endolhelin stimulation of cytosolic calcium and gonadotropin secretion in anterior pituitary cells. Science 248:1663-1666
11. Leong DA, Thorner MO 1991 A potential code of luteinizing hormone-releasing hormone-induced calcium ion responses in the regulation of luteinizing hormone secretion among individual gonadotropes. J Biol Chem 266:9016-9022
12. Tse A, Hille B 1992 GnRH-induced Ca2+ oscillations and rhythmic hyperpolarizations of pituitary gonadotropes. Science 255:462-464
13. i in rat gonadotrophs through an inositol trisphosphate-dependent mechanism. J Biol Chem 269:5680-5686
14. Rooney TA, Sass EJ, Thomas AP 1989 Characterization of cytosolic caclium oscillations induced by phenylaphrine and vasopressin in single fura-2-loaded hepatocytes. J Biol Chem 264:17131-17141
15. 2+ signaling in agonist-stimulated pituitary gonadotrophs. Endocrinology 135:1762-1771
16. Kukuljan M, Stojilkovic SS, Rojas E, Catt KJ 1992 Apamin-sensitive potassium channels mediate agonist-induced oscillations of membrane potential in pituitary gonadotrophs. FEES Lett 301:19-22
17. Hille B 1991 Ionic channels of excitable membranes. Sinauer Associates, Inc., Sunderland
18. Corcuff JB, Guerineau NC, Mariot P, Lussier BT, Mollard P 1993 Multiple cytosolic calcium signals and membrane electrical events evoked in single arginine vasopressin-stimulated corticotrophs. J Biol Chem 268:22313-22321
19. Wang X, Inukai T, Gréer MA, Gréer SE 1994 Evidence that Ca2+-activated K+ channels participate in the regulation of pituitary prolactin secretion. Brain Res 662:83-87
20. Roussel JP, Mateu G, Astier H 1992 Blockade of potassium or calcium channels provokes modifications in TRH-induced TSH release from rat perifused pituitaries. Endocrinol Regul 26:163-170
21. Ritchie AK 1987 Two distinct calcium-activated potassium currents in a rat anterior pituitary cell line. J Physiol 385:591-609
22. + channels in a pituitary cell line. J Physiol 425:117-132
23. Park YB 1994 Ion selectivity and gating of small conductance Ca2-activated K+ channels in cultured rat adrenal chromaffin cells. J Physiol 481:555-570
24. Neely A, Lingle CJ 1992 Two components of calcium-activated potassium current in rat adrenal chromaffin cells. J Physiol 453:97-131
25. Sah P1996 Ca2-activated Kcurrents in neurones: types, physiological roles and modulation. Trends Neurosci 19:150-154
26. Anloni FA, Dayanithi G1990 Blockade of K+ channels reverses the inhibitory action of atriopeptin on secretagogue-stimulated ACTH release by pcrifused isolated rat anterior pituitary cells. J Endocrinol 126:183-191
27. + current in rat gonadotropes. Pfluggers Arch 430:645-652
28. Horn R, Marty A 1988 Muscarinic activation of ionic currents measured by a new whole-cell recording methods. J Gen Physiol 92:145-152
29. Valentijn JA, Louiset E, Vaudry H, Cazin L1991 Involvement of non-selective cationic channels in the generation of pacemaker depolarizations and firing behaviour in cultured frog melanotrophs. Brain Res 560:175-180
30. Childs GV 1995 Division of labor among gonadotropes. Vitam Horm 50:215-286
31. Childs GV, Unabia G, LLoyd J 1992 Recruitment and maturation of small subsets of luteinizing hormone gonadotropes during the estrous cycle. Endocrinology 130:335-344
32. Childs GV, Unabia G, Rougeau D1994 Cells that express luteinizing hormone (LH) and follicle-stimulating hormone (FSH) beta-subunit messenger ribonucleic acids during the estrous cycle: the major contributors contain LH beta, FSH beta, and/or growth hormone. Endocrinology 134:990-997
33. Childs GW, Lloyd JM, Unabia G, Gharib SD, Wierman ME, Chin WW1987 Detection of luteinizing hormone messenger ribonucleic acid (RNA) in individual gonadotropes after castration: use of a new in silu hybridization method with a photobiotinylated complementary RNA probe. Mol Endocrinol 1:926-932
34. Bauer-Dantoin AC, Weiss J, Jameson JL1995 Roles of estrogen, progesterone, and gonadotropin-releasing hormone (GnRH) in the control of pituitary GnRH-receptor gene expression at the time of the preovulatory gonadotropin surges. Endocrinology 136:1014-1019
35. Dalkin AC, Knight CD, Shupnik MA, Haisenleder DJ, Aloi J, Kirk SE, Yasin M, Marshall JC 1993 Ovariectomy and inhibition immunoneutralization acutely increase follicle-stimulating hormone-β messenger ribonucleic acid concentrations: evidence for a nontranscriptional mechanism. Endocrinology 132:1297-1304
36. Childs GV, Unabia G, Wierman ME, Gharib SD, Chin WW 1990 Castration induces time-dependent changes in the follicle-stimulating hormone β-subunit messenger ribonucleic acid-containing gonadotrope cell population. Endocrinology 126:2205-2213
37. Leong DA 1991A model for intracellular calcium signaling and the coordinate regulation of hormone biosynthesis, receptors and secretion. Cell Calcium 12:255-268
38. Shipston MJ, Kelly JS, Antoni FA 1996 Glucocorticoids block protein kinase A inhibition of calcium-activated potassium channels. J Biol Chem 271:9197-9200
39. Ritchie AK 1987 Thyrotropin-releasing hormone stimulates a calcium-activated potassium current in a rat anterior pituitary cell line. J Physiol 385:611-625
40. Hugues M, Duval D, Kitabgi P, Lazdunski M, Vincent JP 1982 Preparation of a pure monoiodo derivative of the bee venum neurotoxin apamin and its binding properties to rat brain synaptosomes. J Biol Chem 257:2762-2769
41. Blatz AL, Magleby KL 1986 Single apamin-blocked Ca2+-activated K+ channels of small conductance in cultured rat skeletal muscle. Nature 323:718-720
42. Hugues M, Romey G, Duval D, Vincent JP, Lazdunski M 1982 Apamin as a selective blocker of the calcium-dependent potassium channel in neuroblastoma cells: voltage-clamp and biochemical characterization of the toxin receptor. Proc Natl Acad Sei USA 79:1308-1312
43. Partridge LD, Muller TH, Swandulla D1994 Calcium-activated non-selective channels in the nervous system. Brain Res Rev 19:319-325