Evidence map›Paper›PMID 38867665›Full record

ArticleJournal of applied physiology (Bethesda, Md. : 1985)2024

Sex differences in spontaneous respiratory recovery following chronic C2 hemisection.

Taylor C Holmes, Nicole M Popp, Carley F Hintz, Isabell Dobrzycki, Carolyn J Schmitz, Kaylyn A Schwichtenberg, Elisa J Gonzalez-Rothi, Christopher W Sundberg, Kristi A Streeter

Abstract read
In one paragraph

Article in Journal of applied physiology (Bethesda, Md. : 1985), 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
–field-weighted citation impact
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

4 citing papers in PubMed.

  1. Review
  2. Article
  3. Article
  4. 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

9 authors.

Taylor C HolmesExercise and Rehabilitation Science Program, Department of Physical Therapy, Marquette University, Milwaukee, Wisconsin, United States.
Nicole M PoppExercise and Rehabilitation Science Program, Department of Physical Therapy, Marquette University, Milwaukee, Wisconsin, United States.
Carley F HintzExercise and Rehabilitation Science Program, Department of Physical Therapy, Marquette University, Milwaukee, Wisconsin, United States.
Isabell DobrzyckiExercise and Rehabilitation Science Program, Department of Physical Therapy, Marquette University, Milwaukee, Wisconsin, United States.
Carolyn J SchmitzExercise and Rehabilitation Science Program, Department of Physical Therapy, Marquette University, Milwaukee, Wisconsin, United States.
Kaylyn A SchwichtenbergExercise and Rehabilitation Science Program, Department of Physical Therapy, Marquette University, Milwaukee, Wisconsin, United States.
Elisa J Gonzalez-RothiDepartment of Physical Therapy, University of Florida, Gainesville, Florida, United States.ORCID 0000-0002-9833-5030
Christopher W SundbergExercise and Rehabilitation Science Program, Department of Physical Therapy, Marquette University, Milwaukee, Wisconsin, United States.ORCID 0000-0002-6709-4078
Kristi A StreeterExercise and Rehabilitation Science Program, Department of Physical Therapy, Marquette University, Milwaukee, Wisconsin, United States.ORCID 0000-0003-2065-8136

Funding

Clinical and Translational Science AwardUL1TR001436 · NCATS · MEDICAL COLLEGE OF WISCONSIN · PI FREED, JULIE K · 2015 to 2025
$47.5M
Phrenic Afferents and Neuromuscular Plasticity Following Spinal Cord InjuryR00HL143207 · NHLBI · MARQUETTE UNIVERSITY · PI STREETER, KRISTI ANN · 2020 to 2022
$732k
Craig H. Neilsen Foundation (CHNF) SCIRTS 891379HHS | NIH | National Center for Advancing Translational Sciences (NCATS) UL1TR001436NCATS NIH HHS UL1 TR001436NHLBI NIH HHS R00 HL143207
6 · The paper itself

Abstract

Respiratory deficits after C2 hemisection (C2Hx) have been well documented through single-sex investigations. Although ovarian sex hormones enable enhanced respiratory recovery observed in females 2 wk post-C2Hx, it remains unknown if sex impacts spontaneous respiratory recovery at chronic time points. We conducted a longitudinal study to provide a comprehensive sex-based characterization of respiratory neuromuscular recovery for 8 wk after C2Hx. We recorded ventilation and chronic diaphragm electromyography (EMG) output in awake, behaving animals, phrenic motor output in anesthetized animals, and performed diaphragm muscle histology in chronically injured male and female rodents. Our results show that females expressed a greater recovery of tidal volume and minute ventilation compared with males during subacute and chronic time points. Eupneic diaphragm EMG amplitude during wakefulness and phrenic motor amplitude are similar between sexes at all time points after injury. Our data also suggest that females have a greater reduction in ipsilateral diaphragm EMG amplitude during spontaneous deep breaths (e.g., sighs) compared with males. Finally, we show evidence for atrophy and remodeling of the fast, fatigable fibers ipsilateral to injury in females, but not in males. To our knowledge, the data presented here represent the first study to report sex-dependent differences in spontaneous respiratory recovery and diaphragm muscle morphology following chronic C2Hx. These data highlight the need to study both sexes to inform evidence-based therapeutic interventions in respiratory recovery after spinal cord injury (SCI).

Indexed as

DiaphragmElectromyographyRecovery of FunctionSpinal Cord InjuriesAnimalsCervical CordFemaleMalePhrenic NerveRatsRats, Sprague-DawleyRespirationSex Characteristicsbreathingdiaphragm musclerespiratory recoverysex differencesspinal cord injury

Identifiers

PMID38867665
PMCPMC11381122

What OpenQuestion holds

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Registered trials

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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.