THE DEPOLARIZING MECHANORECEPTOR POTENTIAL AND CA/MG RECEPTOR-CURRENT OF THE MARINE CILIATE EUPLOTES VANNUS

DC FieldValueLanguage
dc.contributor.authorKRUPPEL, T
dc.contributor.authorRABE, H
dc.contributor.authorDUMMLER, B
dc.contributor.authorLUEKEN, W
dc.date.accessioned2021-12-23T15:59:51Z-
dc.date.available2021-12-23T15:59:51Z-
dc.date.issued1995
dc.identifier.issn03407594
dc.identifier.urihttps://osnascholar.ub.uni-osnabrueck.de/handle/unios/4176-
dc.description.abstractThe anterior depolarizing mechanoreceptor potential and the correlated receptor currents have been studied in the marine ciliate Euplotes vannus. Mechanical stimuli that mimicked cell-cell collisions depolarized the resting potential of about - 25 mV to maximally - 5 mV, with a speed of 1.2 mV/ms, a delay to the stimulus of about 15 ms, and a repolarization within 30 to 300 ms. The power-stroke direction of the cirri-beat reversed from backward to forward during this response. The receptor current rose to an average amplitude of 1.4 nA with a speed of 0.1-0.3 nA/ms and decayed with a single exponential time course with a time constant between 7 and 9 ms. Similar current-reversal potentials, after substitution of extracellular Ca2+ by Mg2+ and vice versa, indicate that the mechanically activated conductance is identical for Ca2+ or Mg2+. The current can be carried by Ba2+ as well, but not by K+ or Na+. Decirriation experiments have shown that the mechanosensitivity is located within the soma membrane.
dc.language.isoen
dc.publisherSPRINGER VERLAG
dc.relation.ispartofJOURNAL OF COMPARATIVE PHYSIOLOGY A-SENSORY NEURAL AND BEHAVIORAL PHYSIOLOGY
dc.subjectBehavioral Sciences
dc.subjectCALCIUM CURRENT
dc.subjectCHANNEL
dc.subjectCONJUGATION
dc.subjectELECTRICAL RESPONSES
dc.subjectEUPLOTES VANNUS
dc.subjectINACTIVATION
dc.subjectMAGNESIUM CURRENT
dc.subjectMECHANORECEPTION
dc.subjectMEMBRANE CURRENTS
dc.subjectNeurosciences
dc.subjectNeurosciences & Neurology
dc.subjectPARAMECIUM
dc.subjectPhysiology
dc.subjectSTYLONYCHIA
dc.subjectZoology
dc.titleTHE DEPOLARIZING MECHANORECEPTOR POTENTIAL AND CA/MG RECEPTOR-CURRENT OF THE MARINE CILIATE EUPLOTES VANNUS
dc.typejournal article
dc.identifier.isiISI:A1995RU16700012
dc.description.volume177
dc.description.issue4
dc.description.startpage511
dc.description.endpage517
dc.publisher.place175 FIFTH AVE, NEW YORK, NY 10010
dcterms.isPartOf.abbreviationJ. Comp. Physiol. A-Sens. Neural Behav. Physiol.
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