Evidence map›Paper›PMID 22033536›Full record

ArticleJournal of applied physiology (Bethesda, Md. : 1985)2012

Contribution of the spontaneous crossed-phrenic phenomenon to inspiratory tidal volume in spontaneously breathing rats.

Brendan J Dougherty, Kun-Ze Lee, Michael A Lane, Paul J Reier, David D Fuller

Open access · greenAbstract read
In one paragraph

Article in Journal of applied physiology (Bethesda, Md. : 1985), 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed
1.6field-weighted citation impact, top 19% 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

31 citing papers in PubMed, 44 citations in OpenAlex.

  1. Review
  2. Diverse Transcriptional Alterations in V2a Propriospinal Neurons Following Spinal Cord Injury.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025
    Article
  3. V2a neurons restore diaphragm function in mice following spinal cord injury.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  4. Article
  5. Review
  6. Article
  7. Article
  8. Spinal cord injury and diaphragm neuromotor control.Expert review of respiratory medicine · 2020
    Review
  9. Article
  10. Article
  11. Contribution of 5-HTRespiratory physiology & neurobiology · 2017
    Article
  12. Article
  13. The crossed phrenic phenomenon.Neural regeneration research · 2017
    Review
  14. Article
  15. Article
  16. Article
  17. Article
  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

5 authors at 2 institutions in 1 country.

Brendan J DoughertyDepartment of Physical Therapy, McKnight Brain Institute, College of Public Health and Health Professions, University of Florida, Gainesville, Florida, USA.
Kun-Ze Lee
Michael A Lane
Paul J Reier
David D Fuller
University of Florida · USAllen Institute for Brain Science · US

Funding

UF Clinical and Translational Science AwardUL1TR000064 · NCATS · UNIVERSITY OF FLORIDA · PI NELSON, DAVID R · 2012 to 2014
$12.2M
Plasticity and Repair in the Phrenic Motor SystemR01NS054025 · NINDS · UNIVERSITY OF FLORIDA · PI REIER, PAUL J · 2006 to 2015
$3.0M
Training Novel Host-Graft Interfaces to Enhance Spinal Cord RepairR21HL104294 · NHLBI · UNIVERSITY OF FLORIDA · PI FULLER, DAVID D · 2011 to 2012
$397k
Embryonic Raphe Cell Transplant and Cervical Spinal Cord InjuryF31NS063659 · NINDS · UNIVERSITY OF FLORIDA · PI DOUGHERTY, BRENDAN J · 2009 to 2011
$65k
NCATS NIH HHS UL1 TR000064NHLBI NIH HHS 1R21-HL104294-01NINDS NIH HHS 1R01-NS-054025NINDS NIH HHS F31 NS063659NINDS NIH HHS F31NS063659.NINDS NIH HHS R01 NS054025
6 · The paper itself

Abstract

Spinal cord hemisection at C2 (C2HS) severs bulbospinal inputs to ipsilateral phrenic motoneurons causing transient hemidiaphragm paralysis. The spontaneous crossed-phrenic phenomenon (sCPP) describes the spontaneous recovery of ipsilateral phrenic bursting following C2HS. We reasoned that the immediate (next breath) changes in tidal volume (V(T)) induced by ipsilateral phrenicotomy during spontaneous breathing would provide a quantitative measure of the contribution of the sCPP to postinjury V(T). Using this approach, we tested the hypothesis that the sCPP makes more substantial contributions to V(T) when respiratory drive is increased. Pneumotachography was used to measure V(T) in anesthetized, spontaneously breathing adult male rats at intervals following C2HS. A progressive increase in V(T) (ml/breath) occurred over an 8 wk period following C2HS during both poikilocapnic baseline breathing and hypercapnic respiratory challenge (7% inspired CO(2)). The sCPP did not impact baseline breathing at 1-3 days postinjury since V(T) was unchanged after ipsilateral phrenicotomy. However, by 2 wk post-C2HS, baseline phrenicotomy caused a 16 ± 2% decline in V(T); a comparable 16 ± 4% decline occurred at 8 wk. Contrary to our hypothesis, the phrenicotomy-induced declines in V(T) (%) during hypercapnic respiratory stimulation did not differ from the baseline response at any postinjury time point (all P > 0.11). We conclude that by 2 wk post-C2HS the sCPP makes a meaningful contribution to V(T) that is similar across different levels of respiratory drive.

Indexed as

RespirationAnimalsInhalationMalePhrenic NerveRatsRats, Sprague-DawleyRespiratory MechanicsTidal Volume

Identifiers

PMID22033536
PMCPMC3290423
OpenAlexW2086791354

What OpenQuestion holds

Textmetadata
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.