Evidence map›Paper›PMID 21577088›Full record

ArticleAnesthesiology2011

Regulation of spinal substance p release by intrathecal calcium channel blockade.

Toshifumi Takasusuki, Tony L Yaksh

Open access · bronzeAbstract read
In one paragraph

Article in Anesthesiology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
3.1field-weighted citation impact, top 9% 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

22 citing papers in PubMed, 54 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. Review
  5. Article
  6. Review
  7. Review
  8. µ-Opioid receptors inhibit the exercise pressor reflex by closing N-type calcium channels but not by opening GIRK channels in rats.American journal of physiology. Regulatory, integrative and comparative physiology · 2018
    Article
  9. Article
  10. Review
  11. Review
  12. Article
  13. [Rebound depolarization of substantia gelatinosa neurons and its modulatory mechanisms in rat spinal dorsal horn].Nan fang yi ke da xue xue bao = Journal of Southern Medical University · 2016
    Article
  14. Article
  15. Article
  16. Article
  17. Review
  18. Article
  19. Article
  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

2 authors at 2 institutions in 2 countries.

Toshifumi TakasusukiDepartment of Anesthesiology, School of Medicine, Dokkyo Medical University, Mibu, Tochigi, Japan.
Tony L Yaksh
Dokkyo Medical University · JPUniversity of California San Diego · US

Funding

The Pharmacology of Spinal AnalgesicsR01DA002110 · NIDA · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI YAKSH, TONY L. · 1985 to 2014
$3.8M
NIDA NIH HHS DA02110NIDA NIH HHS R01 DA002110
6 · The paper itself

Abstract

backgroundThe authors investigated the role of different voltage-sensitive calcium channels expressed at presynaptic afferent terminals in substance P release and on nociceptive behavior evoked by intraplantar formalin by examining the effects of intrathecally delivered N- (ziconotide), T- (mibefradil), and L-type voltage-sensitive calcium channel blockers (diltiazem and verapamil).

methodsRats received intrathecal pretreatment with saline or doses of morphine, ziconotide, mibefradil, diltiazem, or verapamil. The effect of these injections upon flinching evoked by intraplantar formalin (5%, 50 μl) was quantified. To assess substance P release, the incidence of neurokinin-1 receptor internalization in the ipsilateral and contralateral lamina I was determined in immunofluorescent-stained tissues.

resultsIntrathecal morphine (20 μg), ziconotide (0.3, 0.6, and 1 μg), mibefradil (100 μg, but not 50 μg), diltiazem (500 μg, but not 300 μg), and verapamil (200 μg, but not 50 and 100 μg) reduced paw flinching in phase 2 compared with vehicle control (P < 0.05), with no effect on phase 1. Ziconotide (0.3, 0.6, and 1 μg) and morphine (20 μg) significantly inhibited neurokinin-1 receptor internalization (P < 0.05), but mibefradil, diltiazem, and verapamil at the highest doses had no effect.

conclusionThese results emphasize the role in vivo of N-type but not T- and L-type voltage-sensitive calcium channel blockers in mediating the stimulus-evoked substance P release from small primary afferents and suggest that T- and L-type voltage-sensitive calcium channel blockers exert antihyperalgesic effects by an action on other populations of afferents or mechanisms involving postsynaptic excitability.

Indexed as

Analgesics, OpioidAnimalsBehavior, AnimalCalcium Channel BlockersCalcium Channels, L-TypeCalcium Channels, N-TypeCalcium Channels, T-TypeDose-Response Relationship, DrugImmunohistochemistryInjections, SpinalMaleMorphineMovementomega-ConotoxinsPain MeasurementPosterior Horn CellsAnalgesics, OpioidCalcium Channel BlockersCalcium Channels, L-TypeCalcium Channels, N-TypeCalcium Channels, T-TypeMorphineomega-ConotoxinsReceptors, Neurokinin-1Substance Pziconotide

Identifiers

PMID21577088
PMCPMC3360553
OpenAlexW2034384370

What OpenQuestion holds

Textmetadata
LicenceTDM
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.