1993
Rapid stimulation of rhodamine 123 efflux from multidrug-resistant KB cells by progesterone
Jancis E, Hong-xing C, Carbone R, Hochberg R, Dannies P. Rapid stimulation of rhodamine 123 efflux from multidrug-resistant KB cells by progesterone. Biochemical Pharmacology 1993, 46: 1613-1619. PMID: 7902090, DOI: 10.1016/0006-2952(93)90331-p.Peer-Reviewed Original ResearchConceptsRhodamine 123 effluxMultidrug resistance pumpRhodamine 123Efflux of daunomycinRapid stimulationMultidrug-resistant KB cellsAbsence of progesteroneNon-genomic mechanismsCause of retentionKB cellsMicroM progesteroneProgesteroneCarcinoma cellsPump activityActive steroidsMCF7 cellsStimulationIntracellular bindingEffluxCellsMitochondrial dyeDesoxycorticosteronePromegestoneVerapamilTestosterone
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 typesCa2CellsEfflux