Evidence map›Paper›PMID 22429647›Full record

ArticleMolecular pain2012

Progesterone produces antinociceptive and neuroprotective effects in rats with microinjected lysophosphatidic acid in the trigeminal nerve root.

Min Ji Kim, Hea Jung Shin, Kyoung Ae Won, Kui Ye Yang, Jin Sook Ju, Yoon Yub Park, Jae Sik Park, Yong Cheol Bae, Dong Kuk Ahn

Open access · goldAbstract read
In one paragraph

Article in Molecular pain, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
1.3field-weighted citation impact, top 20% 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

20 citing papers in PubMed, 46 citations in OpenAlex.

  1. Article
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  7. Effects of progesterone on T-type-CaNeural regeneration research · 2022
    Article
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  9. Review
  10. Article
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  12. Review
  13. Progesterone Application to the Rat Forehead Produces Corneal Antinociception.Investigative ophthalmology & visual science · 2019
    Article
  14. Article
  15. Preemptive application of QX-314 attenuates trigeminal neuropathic mechanical allodynia in rats.The Korean journal of physiology & pharmacology : official journal of the Korean Physiological Society and the Korean Society of Pharmacology · 2018
    Article
  16. Review
  17. Participation of central GABAThe Korean journal of physiology & pharmacology : official journal of the Korean Physiological Society and the Korean Society of Pharmacology · 2017
    Article
  18. Article
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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

9 authors at 2 institutions in 1 country.

Min Ji KimDepartment of Oral Physiology, School of Dentistry, Kyungpook National University, Daegu, South Korea.
Hea Jung Shin
Kyoung Ae Won
Kui Ye Yang
Jin Sook Ju
Yoon Yub Park
Jae Sik Park
Yong Cheol Bae
Dong Kuk Ahn
Kyungpook National University · KRCatholic University of Daegu · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIn our present study, we studied the role of demyelination of the trigeminal nerve root in the development of prolonged nociceptive behavior in the trigeminal territory.

resultsUnder anesthesia, the Sprague-Dawley rats were mounted onto a stereotaxic frame and 3 μL of lysophosphatidic acid (LPA, 1 nmol) was injected into the trigeminal nerve root to produce demyelination. This treatment decreased the air-puff thresholds, persisted until postoperative day 130, and then returned to the preoperative levels 160 days after LPA injection. The LPA-treated rats also showed a significant hyper-responsiveness to pin-prick stimulation. We further investigated the antinociceptive and neuroprotective effects of progesterone in rats undergoing demyelination of the trigeminal nerve root. Progesterone (8, 16 mg/kg/day) was administered subcutaneously, beginning on the operative day, for five consecutive days in the LPA-treated rats. Treatment with progesterone produced significant early anti-allodynic effects and delayed prolonged anti-allodynic effects. The expression of protein zero (P0) and peripheral myelin protein 22 (PMP22) were significantly down-regulated in the trigeminal nerve root on postoperative day 5 following LPA injection. This down-regulation of the P0 and PMP22 levels was blocked by progesterone treatment.

conclusionsThese results suggest that progesterone produces antinociceptive effects through neuroprotective action in animals with LPA-induced trigeminal neuropathic pain. Moreover, progesterone has potential utility as a novel therapy for trigeminal neuropathic pain relief at an appropriate managed dose and is therefore a possible future treatment strategy for improving the recovery from injury.

Indexed as

MicroinjectionsAnalgesicsAnimalsBehavior, AnimalHyperalgesiaLysophospholipidsMaleNeuroprotective AgentsProgesteroneRatsRats, Sprague-DawleyTrigeminal NerveAnalgesicslysophosphatidic acidLysophospholipidsNeuroprotective AgentsProgesterone

Identifiers

PMID22429647
PMCPMC3315401
OpenAlexW1974260271

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.