1996
Immortalized GnRH Neurons Express Large-Conductance Calcium-Activated Potassium Channels
Spergel D, Catt K, Rojas E. Immortalized GnRH Neurons Express Large-Conductance Calcium-Activated Potassium Channels. Neuroendocrinology 1996, 63: 101-111. PMID: 9053774, DOI: 10.1159/000126946.Peer-Reviewed Original ResearchConceptsGT1-7 cellsGnRH secretory responseGnRH secretionChannel blockersBK channelsSecretory responseGonadotropin-releasing hormone (GnRH) neuronsEffects of charybdotoxinImmortalized GnRH neuronsPerforated-patch recordingsSmall conductance Ca2Patch-clamp recordingsBK channel blockersGamma-aminobutyric acidPatch-clamp techniqueLarge-conductance Ca2Cytoplasmic free Ca2Endoplasmic reticulum Ca2Hormone neuronsGnRH neuronsExcitatory neurotransmitterVoltage-dependent mannerSustained componentFura-2Whole-cell conductance
1995
L-Type Ca2+ Channels Mediate Joint Modulation by Gamma-Amino-butyric Acid and Glutamate of [Ca2+]i and Neuropeptide Secretion in Immortalized Gonadodropin-Releasing Hormone Neurons
Spergel D, Krsmanovic L, Stojilkovic S, Catt K. L-Type Ca2+ Channels Mediate Joint Modulation by Gamma-Amino-butyric Acid and Glutamate of [Ca2+]i and Neuropeptide Secretion in Immortalized Gonadodropin-Releasing Hormone Neurons. Neuroendocrinology 1995, 61: 499-508. PMID: 7617127, DOI: 10.1159/000126873.Peer-Reviewed Original ResearchConceptsGamma-aminobutyric acidReceptor antagonistReceptor agonistSecretory responseGonadotropin-releasing hormone (GnRH) secretionGlutamate-induced Ca2GnRH secretory responseImmortalized GnRH neuronsGABAB receptor antagonistGABAA receptor antagonistGABAB receptor agonistGABAA receptor agonistL-type Ca2GT1-7 neuronsHormone neuronsGnRH neuronsRole of calciumHormone secretionGamma-AminoNeuropeptide secretionAgonist concentrationsCytoplasmic calciumNeuronsFree mediumGlutamate
1994
Glutamate Modulates [Ca2+]i and Gonadotropin-Releasing Hormone Secretion in Immortalized Hypothalamic GT1-7 Neurons
Spergel D, Krsmanovic L, Stojilkovic S, Catt K. Glutamate Modulates [Ca2+]i and Gonadotropin-Releasing Hormone Secretion in Immortalized Hypothalamic GT1-7 Neurons. Neuroendocrinology 1994, 59: 309-317. PMID: 7911229, DOI: 10.1159/000126672.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsCalciumCells, CulturedCycloleucineExcitatory Amino Acid AntagonistsFura-2GlutamatesGlutamic AcidGonadotropin-Releasing HormoneHypothalamusInositol PhosphatesMiceMice, TransgenicNeuronsNeurotoxinsReceptors, AMPAReceptors, GlutamateReceptors, N-Methyl-D-AspartateSpectrometry, FluorescenceConceptsDichlorokynurenic acidGnRH secretionMK-801Immortalized hypothalamic GT1-7 neuronsGonadotropin-Releasing Hormone SecretionOxo-4-isoxazolepropanoic acidAMPA/kainate antagonistGT1-7 cell lineAction of glutamateReceptor subtype agonistsNMDA receptor antagonistConcentration-dependent riseGT1-7 neuronsGT1-7 cellsKainate antagonistSubtype agonistsHormone secretionHypothalamic neuronsReceptor antagonistGlutamate actionSecretory responseNMDA receptorsGlycine siteCyclopentanedicarboxylic acidNeuroendocrine regulation4 Calcium Signaling and Episodic Secretory Responses of GnRH Neurons
Stojilkovic S, Krsmanovic L, Spergel D, Tomic M, Catt K. 4 Calcium Signaling and Episodic Secretory Responses of GnRH Neurons. International Review Of Neurobiology 1994, 20: 68-84. DOI: 10.1016/b978-0-12-185289-4.50010-3.ChaptersBasal GnRH releaseGnRH releaseGnRH neuronsMammalian gonadotropin-releasing hormoneGnRH pulse generatorPulsatile GnRH releaseGonadotropin-releasing hormoneIntracellular calcium concentrationRelease of neurotransmittersGnRH cellsHypothalamic neuronsPreoptic areaSecretory responseMediobasal hypothalamusHypothalamic tissuePortal vesselsPresynaptic terminalsCalcium concentrationNeuronsCalcium signalingPulsatile natureCellsReleaseSynchronized patternHypothalamus