Evidence map›Paper›PMID 22028774›Full record

ArticlePloS one2011

The involvement of voltage-operated calcium channels in somato-dendritic oxytocin release.

Vicky A Tobin, Alison J Douglas, Gareth Leng, Mike Ludwig

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
6.2field-weighted citation impact, top 4% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

23 citing papers in PubMed, 50 citations in OpenAlex.

  1. Article
  2. Navigating Central Oxytocin Transport: Known Realms and Uncharted Territories.The Neuroscientist : a review journal bringing neurobiology, neurology and psychiatry · 2025
    Review
  3. Article
  4. Article
  5. Article
  6. Endolysosomal TPCs regulate social behavior by controlling oxytocin secretion.Proceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Review
  12. Review
  13. Review
  14. Dendritic Release of Neurotransmitters.Comprehensive Physiology · 2016
    Review
  15. Multiple signalling modalities mediated by dendritic exocytosis of oxytocin and vasopressin.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2015
    Review
  16. Serotonin release from the neuronal cell body and its long-lasting effects on the nervous system.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2015
    Article
  17. Article
  18. Article
  19. Review
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors at 1 institution in 1 country.

Vicky A TobinCentre for Integrative Physiology, University of Edinburgh, Edinburgh, United Kingdom.
Alison J Douglas
Gareth Leng
Mike Ludwig
University of Edinburgh · GB

Funding

Biotechnology and Biological Sciences Research Council BB/F019009/1Medical Research Council G0700176
6 · The paper itself

Abstract

Magnocellular neurons of the supraoptic nucleus (SON) secrete oxytocin and vasopressin from axon terminals in the neurohypophysis, but they also release large amounts of peptide from their somata and dendrites, and this can be regulated both by activity-dependent Ca(2+) influx and by mobilization of intracellular Ca(2+). This somato-dendritic release can also be primed by agents that mobilise intracellular Ca(2+), meaning that the extent to which it is activity-dependent, is physiologically labile. We investigated the role of different Ca(2+) channels in somato-dendritic release; blocking N-type channels reduced depolarisation-induced oxytocin release from SONs in vitro from adult and post-natal day 8 (PND-8) rats, blocking L-type only had effect in PND-8 rats, while blocking other channel types had no significant effect. When oxytocin release was primed by prior exposure to thapsigargin, both N- and L-type channel blockers reduced release, while P/Q and R-type blockers were ineffective. Using confocal microscopy, we found immunoreactivity for Ca(v)1.2 and 1.3 channel subunits (which both form L-type channels), 2.1 (P/Q type), 2.2 (N-type) and 2.3 (R-type) in the somata and dendrites of both oxytocin and vasopressin neurons, and the intensity of the immunofluorescence signal for different subunits differed between PND-8, adult and lactating rats. Using patch-clamp electrophysiology, the N-type Ca(2+) current density increased after thapsigargin treatment, but did not alter the voltage sensitivity of the channel. These results suggest that the expression, location or availability of N-type Ca(2+) channels is altered when required for high rates of somato-dendritic peptide release.

Indexed as

AnimalsCalciumCalcium Channel BlockersCalcium ChannelsDendritesFemaleGene Expression RegulationLactationOxytocinRatsRats, Sprague-DawleySupraoptic NucleusThapsigarginVasopressinsCalciumCalcium Channel BlockersCalcium ChannelsOxytocinThapsigarginVasopressins

Identifiers

PMID22028774
PMCPMC3197583
OpenAlexW2093853721

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.