1990
Thapsigargin, but not caffeine, blocks the ability of thyrotropin-releasing hormone to release Ca2+ from an intracellular store in GH4C1 pituitary cells
Law G, Pachter J, Thastrup O, Hanley M, Dannies P. Thapsigargin, but not caffeine, blocks the ability of thyrotropin-releasing hormone to release Ca2+ from an intracellular store in GH4C1 pituitary cells. Biochemical Journal 1990, 267: 359-364. PMID: 1692207, PMCID: PMC1131296, DOI: 10.1042/bj2670359.Peer-Reviewed Original ResearchMeSH Keywords3-Pyridinecarboxylic acid, 1,4-dihydro-2,6-dimethyl-5-nitro-4-(2-(trifluoromethyl)phenyl)-, Methyl esterAnimalsCaffeineCalciumCell LineInositol PhosphatesKineticsNimodipinePituitary NeoplasmsPlants, MedicinalProlactinTerpenesThapsigarginThyrotropin-Releasing HormoneTumor Cells, CulturedConceptsThyrotropin-releasing hormoneGH4C1 pituitary cellsPituitary cellsIntracellular storesGH4C1 cellsAbility of TRHBay K 8644Cytosolic free Ca2Action of thapsigarginInsP3-sensitive storesSustained elevationChannel blockersReceptor levelsTRH stimulationExtracellular Ca2Intracellular Ca2Transient increaseFree Ca2ThapsigarginSubsequent spikesHormoneCell typesCa2CellsEffluxComparison of the Regulation of Carboxypeptidase E and Prolactin in GH4C1 Cells, a Rat Pituitary Cell Line
Flicker L, Reaves B, Das B, Dannies P. Comparison of the Regulation of Carboxypeptidase E and Prolactin in GH4C1 Cells, a Rat Pituitary Cell Line. Neuroendocrinology 1990, 51: 658-663. PMID: 2114002, DOI: 10.1159/000125407.Peer-Reviewed Original ResearchConceptsGH4C1 cellsPituitary cell lineEpidermal growth factorNM thyrotropin-releasing hormoneCarboxypeptidase ECell linesCPE activityGrowth factorThyrotropin-releasing hormoneLevels of prolactinCPE mRNAAnterior pituitary cell lineIntracellular levelsSecretory granulesRat anterior pituitary cell lineRat pituitary cell lineGH4C1 cell lineProlactinControl valuesIntracellular prolactinTreatmentNorthern blot analysisBlot analysisEstradiolInsulin
1988
TRH and BAY K 8644 synergistically stimulate prolactin release but not 45Ca2+ uptake
Pachter J, Law G, Dannies P. TRH and BAY K 8644 synergistically stimulate prolactin release but not 45Ca2+ uptake. American Journal Of Physiology 1988, 255: c633-c640. PMID: 2461093, DOI: 10.1152/ajpcell.1988.255.5.c633.Peer-Reviewed Original ResearchConceptsBay K 8644Thyrotropin-releasing hormoneProlactin secretionAngiotensin IIProlactin releaseChannel agonist Bay K 8644Agonist Bay K 8644Rat anterior pituitary cellsFluorescent indicator indo-1Anterior pituitary cellsDihydropyridine-sensitive Ca2Indicator indo-1Primary cultured cellsSecretory peaksPituitary cellsSubsequent stimulationIndo-1Transient increaseCytosolic Ca2GH4C1 cellsPrimary culturesSecretionUntreated cellsAdditional effectCultured cells
1985
Comparison of patterns of prolactin release in GH4C1 cells and primary pituitary cultures
Delbeke D, Kojima I, Dannies P. Comparison of patterns of prolactin release in GH4C1 cells and primary pituitary cultures. Molecular And Cellular Endocrinology 1985, 43: 15-22. PMID: 3934015, DOI: 10.1016/0303-7207(85)90037-1.Peer-Reviewed Original Research
1984
Unresponsiveness of GH cells to cyclo(histidyl-proline), a metabolite of thyrotropin releasing hormone
Battaini F, Dannies P, Peterkofsky A. Unresponsiveness of GH cells to cyclo(histidyl-proline), a metabolite of thyrotropin releasing hormone. Life Sciences 1984, 35: 2519-2527. PMID: 6096658, DOI: 10.1016/0024-3205(84)90438-7.Peer-Reviewed Original ResearchSynergistic stimulation of prolactin release by phorbol ester, A23187 and forskolin
Delbeke D, Kojima I, Dannies P, Rasmussen H. Synergistic stimulation of prolactin release by phorbol ester, A23187 and forskolin. Biochemical And Biophysical Research Communications 1984, 123: 735-741. PMID: 6091639, DOI: 10.1016/0006-291x(84)90291-2.Peer-Reviewed Original Research
1980
Action of Cholera Toxin on Hormone Synthesis and Release in GH Cells: Evidence that Adenosine 3′,5′-Monophosphate Does Not Mediate the Decrease in Growth Hormone Synthesis Caused by Thyrotropin-Releasing Hormone*
DANNIES P, TASHJIAN A. Action of Cholera Toxin on Hormone Synthesis and Release in GH Cells: Evidence that Adenosine 3′,5′-Monophosphate Does Not Mediate the Decrease in Growth Hormone Synthesis Caused by Thyrotropin-Releasing Hormone*. Endocrinology 1980, 106: 1532-1536. PMID: 6244936, DOI: 10.1210/endo-106-5-1532.Peer-Reviewed Original ResearchConceptsGH synthesisCholera toxinIntracellular cAMPWeeks of treatmentThyrotropin-releasing hormoneRelease of PRLHormone synthesisRat pituitary cellsIntracellular PRLGrowth hormone synthesisPRL releaseSimilar lag periodPituitary cellsGH cellsControl valuesPRL synthesisTRHPRLToxinClonal strainsLag periodReleaseCellsCAMPDecrease
1976
Release and synthesis of prolactin by rat pituitary cell strains are regulated independently by thyrotropin-releasing hormone
DANNIES P, TASJIAN A. Release and synthesis of prolactin by rat pituitary cell strains are regulated independently by thyrotropin-releasing hormone. Nature 1976, 261: 707-710. PMID: 180421, DOI: 10.1038/261707a0.Peer-Reviewed Original ResearchThyrotropin-releasing hormone inreases prolactin mRNA activity in the cytoplasm of GH-cells as measured by translation in a wheat germ cell-free system
Dannies P, Tashijian A. Thyrotropin-releasing hormone inreases prolactin mRNA activity in the cytoplasm of GH-cells as measured by translation in a wheat germ cell-free system. Biochemical And Biophysical Research Communications 1976, 70: 1180-1189. PMID: 821486, DOI: 10.1016/0006-291x(76)91027-5.Peer-Reviewed Original ResearchA Possible Role of Cyclic AMP in Mediating the Effects of Thyrotropin-Releasing Hormone on Prolactin Release and on Prolactin and Growth Hormone Synthesis in Pituitary Cells in Culture
DANNIES P, GAUTVIK K, TASHJIAN A. A Possible Role of Cyclic AMP in Mediating the Effects of Thyrotropin-Releasing Hormone on Prolactin Release and on Prolactin and Growth Hormone Synthesis in Pituitary Cells in Culture. Endocrinology 1976, 98: 1147-1159. PMID: 177274, DOI: 10.1210/endo-98-5-1147.Peer-Reviewed Original ResearchConceptsThyrotropin-releasing hormoneEffects of TRHProlactin releaseCyclic AMP concentrationGrowth hormone productionProlactin synthesisGH cellsGrowth hormone synthesisCyclic AMPPituitary cellsPhosphodiesterase inhibitorHormone productionHormone synthesisNM thyrotropin-releasing hormoneConcentration of TRHIntracellular cyclic AMP concentrationAMP concentrationCyclic AMP accumulationRat pituitary cellsHalf-maximal increaseDibutyryl cyclic AMPLong-term effectsAMP accumulationGrowth hormoneSerum-free medium
1973
Effects of Thyrotropin-releasing Hormone and Hydrocortisone on Synthesis and Degradation of Prolactin in a Rat Pituitary Cell Strain
Dannies P, Tashjian A. Effects of Thyrotropin-releasing Hormone and Hydrocortisone on Synthesis and Degradation of Prolactin in a Rat Pituitary Cell Strain. Journal Of Biological Chemistry 1973, 248: 6174-6179. PMID: 4199262, DOI: 10.1016/s0021-9258(19)43524-2.Peer-Reviewed Original ResearchConceptsSynthesis of prolactinProlactin accumulationThyrotropin-releasing hormoneHydrocortisone resultsEffect of thyrotropinLong-term effectsPituitary cellsGH cellsProlactinDegradation of prolactinHormoneTerm effectsHydrocortisoneIntracellular poolDecreased accumulationClonal strainsCell strainsRadioactive leucineSpecific immunoprecipitationCellsHoursTreatmentDaysLeucineCulture medium