1993
Resetting of tubuloglomerular feedback by interrupting early distal flow
MORSING P, VELAZQUEZ H, ELLISON D, WRIGHT FS. Resetting of tubuloglomerular feedback by interrupting early distal flow. Acta Physiologica 1993, 148: 63-68. PMID: 8333296, DOI: 10.1111/j.1748-1716.1993.tb09532.x.Peer-Reviewed Original ResearchConceptsAfferent arteriolesMacula densaTGF mechanismDistal tubulesDistal nephronMacula densa segmentStop-flow pressureTubuloglomerular feedback mechanismHalf-maximal decreaseMacula densa plaqueDelta PsfGlomerular arteriolesTubuloglomerular feedbackDistal flowExtraglomerular mesangiumGlomerular dynamicsSame nephronTubular fluidTubular segmentsOrthograde microperfusionArteriolesNephronSignificant increaseBlockadeConcentration of sodium
1992
Luminal influences on potassium secretion: chloride, sodium, and thiazide diuretics
Velazquez H, Ellison DH, Wright FS. Luminal influences on potassium secretion: chloride, sodium, and thiazide diuretics. American Journal Of Physiology 1992, 262: f1076-f1082. PMID: 1621812, DOI: 10.1152/ajprenal.1992.262.6.f1076.Peer-Reviewed Original ResearchActive potassium absorption by the renal distal tubule
Okusa MD, Unwin RJ, Velazquez H, Giebisch G, Wright FS. Active potassium absorption by the renal distal tubule. American Journal Of Physiology 1992, 262: f488-f493. PMID: 1532693, DOI: 10.1152/ajprenal.1992.262.3.f488.Peer-Reviewed Original ResearchConceptsDistal tubulesPotassium-deficient ratsLumen-negative transepithelial voltageLow potassium dietSprague-Dawley ratsRenal distal tubulesRat distal tubulesGroups of ratsLate distal tubuleSCH 28080Vivo microperfusion techniquesNet potassium fluxActive potassium absorptionK-adenosinetriphosphataseRegular dietPotassium absorptionNormal ratsDistal nephronPotassium depletionRatsSmall hyperpolarizationMicroperfusion techniquePotassium homeostasisTransepithelial voltageActive transport mechanism