Evidence map›Paper›PMID 23249932›Full record

ArticleAnesthesiology2013

Reversal of peripheral nerve injury-induced hypersensitivity in the postpartum period: role of spinal oxytocin.

Silvia Gutierrez, Baogang Liu, Ken-ichiro Hayashida, Timothy T Houle, James C Eisenach

Open access · bronzeAbstract read
In one paragraph

Article in Anesthesiology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
9.8field-weighted citation impact, top 2% 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

24 citing papers in PubMed, 72 citations in OpenAlex.

  1. Review
  2. Article
  3. Review
  4. Mechanisms Underlying Lumbopelvic Pain During Pregnancy: A Proposed Model.Frontiers in pain research (Lausanne, Switzerland) · 2021
    Article
  5. Article
  6. Article
  7. Review
  8. Article
  9. Article
  10. Article
  11. Article
  12. Chronic pain during pregnancy: a review of the literature.International journal of women's health · 2018
    Review
  13. Article
  14. Pituitary Hormones and Orofacial Pain.Frontiers in integrative neuroscience · 2018
    Article
  15. Article
  16. Article
  17. Article
  18. Review
  19. Article
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors at 1 institution in 1 country.

Silvia GutierrezWake Forest School of Medicine, Winston Salem, NC 27157, USA.
Baogang Liu
Ken-ichiro Hayashida
Timothy T Houle
James C Eisenach
Wake Forest University · US

Funding

WORKER PROTECTION AGAINST AIRBORNE INFLUENZA - A PILOT STUDYM01RR007122 · NCRR · WAKE FOREST UNIVERSITY HEALTH SCIENCES · PI HOLMES, ROSS P · 1992 to 2010
$35.2M
SYSTEMATIC STUDY OF SELECTIVE SPINAL ANALGESIA IN HUMANSR01GM048085 · NIGMS · WAKE FOREST UNIVERSITY HEALTH SCIENCES · PI EISENACH, JAMES · 1992 to 2010
$4.1M
Receptor Selective Spinal AnalgesiaR37GM048085 · NIGMS · WAKE FOREST UNIVERSITY HEALTH SCIENCES · PI EISENACH, JAMES · 2011 to 2020
$3.7M
NCRR NIH HHS M01 RR007122NIGMS NIH HHS GM48085NIGMS NIH HHS R01 GM048085NIGMS NIH HHS R37 GM048085
6 · The paper itself

Abstract

backgroundPhysical injury, including surgery, can result in chronic pain; yet chronic pain following childbirth, including cesarean delivery in women, is rare. The mechanisms involved in this protection by pregnancy or delivery have not been explored.

methodsWe examined the effect of pregnancy and delivery on hypersensitivity to mechanical stimuli of the rat hindpaw induced by peripheral nerve injury (spinal nerve ligation) and after intrathecal oxytocin, atosiban, and naloxone. Additionally, oxytocin concentration in lumbar spinal cerebrospinal fluid was determined.

resultsSpinal nerve ligation performed at mid-pregnancy resulted in similar hypersensitivity to nonpregnant controls, but hypersensitivity partially resolved beginning after delivery. Removal of pups after delivery prevented this partial resolution. Cerebrospinal fluid concentrations of oxytocin were greater in normal postpartum rats prior to weaning. To examine the effect of injury at the time of delivery rather than during pregnancy, spinal nerve ligation was performed within 24 h of delivery. This resulted in acute hypersensitivity that partially resolved over the next 2-3 weeks. Weaning of pups resulted only in a temporary return of hypersensitivity. Intrathecal oxytocin effectively reversed the hypersensitivity following separation of the pups. Postpartum resolution of hypersensitivity was transiently abolished by intrathecal injection of the oxytocin receptor antagonist, atosiban.

conclusionsThese results suggest that the postpartum period rather than pregnancy protects against chronic hypersensitivity from peripheral nerve injury and that this protection may reflect sustained oxytocin signaling in the central nervous system during this period.

Indexed as

AnimalsBehavior, AnimalDisease Models, AnimalFemaleHormone AntagonistsHypersensitivityInjections, SpinalNaloxoneNarcotic AntagonistsOxytocicsOxytocinPeripheral Nerve InjuriesPhysical StimulationPostpartum PeriodRatsRats, Sprague-DawleyatosibanHormone AntagonistsNaloxoneNarcotic AntagonistsOxytocicsOxytocinVasotocin

Identifiers

PMID23249932
PMCPMC3876486
OpenAlexW2048183962

What OpenQuestion holds

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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.