Literature DB >> 1816506

Dual role for calcium in the control of spike duration in rat supraoptic neuroendocrine cells.

K Kirkpatrick1, C W Bourque.   

Abstract

Magnocellular neurosecretory cells (MNCs) display activity-dependent changes in spike duration to modulate Ca2+ influx both in their somata, and in their axon terminals in the neurohypophysis. This study reveals (i) that Ca2+ influx is required to mediate the expression of spike broadening, and (ii) that internal Ca2+ activates a delayed component of spike repolarization in MNCs of the rat supraoptic nucleus. This mechanism provides a rapid feedback control of spike-mediated Ca2+ influx in these neuroendocrine cells.

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Year:  1991        PMID： 1816506     DOI： 10.1016/0304-3940(91)90586-i

Source DB:  PubMed          Journal:  Neurosci Lett        ISSN： 0304-3940            Impact factor:   3.046


  10 in total

1.  Excitatory role of the hyperpolarization-activated inward current in phasic and tonic firing of rat supraoptic neurons.

Authors:  M Ghamari-Langroudi; C W Bourque
Journal:  J Neurosci       Date:  2000-07-01       Impact factor: 6.167

2.  Asynchronous presynaptic glutamate release enhances neuronal excitability during the post-spike refractory period.

Authors:  Karl J Iremonger; Jaideep S Bains
Journal:  J Physiol       Date:  2016-01-18       Impact factor: 5.182

3.  Inhibition of N- and P/Q-type calcium channels by postsynaptic GABAB receptor activation in rat supraoptic neurones.

Authors:  N Harayama; I Shibuya; K Tanaka; N Kabashima; Y Ueta; H Yamashita
Journal:  J Physiol       Date:  1998-06-01       Impact factor: 5.182

4.  The ionic dependence of the histamine-induced depolarization of vasopressin neurones in the rat supraoptic nucleus.

Authors:  B N Smith; W E Armstrong
Journal:  J Physiol       Date:  1996-09-01       Impact factor: 5.182

5.  Action Potential Broadening in Capsaicin-Sensitive DRG Neurons from Frequency-Dependent Reduction of Kv3 Current.

Authors:  Pin W Liu; Nathaniel T Blair; Bruce P Bean
Journal:  J Neurosci       Date:  2017-09-06       Impact factor: 6.167

6.  17-Oestradiol modulates in vitro electrical properties and responses to kainate of oxytocin neurones in lactating rats.

Authors:  J M Israel; D A Poulain
Journal:  J Physiol       Date:  2000-04-15       Impact factor: 5.182

7.  Electrophysiological characteristics of immunochemically identified rat oxytocin and vasopressin neurones in vitro.

Authors:  W E Armstrong; B N Smith; M Tian
Journal:  J Physiol       Date:  1994-02-15       Impact factor: 5.182

8.  Activity dependence and functional role of the apamin-sensitive K+ current in rat supraoptic neurones in vitro.

Authors:  K Kirkpatrick; C W Bourque
Journal:  J Physiol       Date:  1996-07-15       Impact factor: 5.182

9.  Diminished A-type potassium current and altered firing properties in presympathetic PVN neurones in renovascular hypertensive rats.

Authors:  Patrick M Sonner; Jessica A Filosa; Javier E Stern
Journal:  J Physiol       Date:  2008-01-31       Impact factor: 5.182

10.  Feedback inhibition of action potential discharge by endogenous adenosine enhancement of the medium afterhyperpolarization.

Authors:  Ming Ruan; Colin H Brown
Journal:  J Physiol       Date:  2009-01-12       Impact factor: 5.182
  10 in total

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