Evidence map›Paper›PMID 36899099›Full record

ArticleSpinal cord2023

Denervation impacts muscle quality and knee bone mineral density after spinal cord injury.

Ahmad M Alazzam, Jacob A Goldsmith, Refka E Khalil, M Rehan Khan, Ashraf S Gorgey

Registry-linked trialAbstract read
PubMed Publisher
In one paragraph

Article in Spinal cord, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT03345576 (Testosterone and Long Pulse Width Stimulation for Denervated Muscles After Spinal Cord Injury), which is not on this map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
2.6field-weighted citation impact, top 11% 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.

NCT03345576 phase2completednot on this map

Testosterone and Long Pulse Width Stimulation for Denervated Muscles After Spinal Cord Injury

TypeinterventionalSponsorVA Office of Research and DevelopmentRan2018 to 2023Enrolled12ConditionsSpinal Cord InjuryArmsTestosterone and LPWS, Testosterone and standard NMES
3 · Its place in the literature

Who cites it

7 citing papers in PubMed, 10 citations in OpenAlex.

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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

5 authors at 2 institutions in 1 country.

Ahmad M AlazzamSpinal Cord Injury and Disorders, Hunter Holmes McGuire VA Medical Center, Richmond, VA, USA.
Jacob A GoldsmithSpinal Cord Injury and Disorders, Hunter Holmes McGuire VA Medical Center, Richmond, VA, USA.
Refka E KhalilSpinal Cord Injury and Disorders, Hunter Holmes McGuire VA Medical Center, Richmond, VA, USA.
M Rehan KhanRadiology Services, Hunter Holmes McGuire VA Medical Center, Richmond, VA, USA.
Ashraf S GorgeySpinal Cord Injury and Disorders, Hunter Holmes McGuire VA Medical Center, Richmond, VA, USA. ashraf.gorgey@va.gov.ORCID 0000-0002-9157-6034
Hunter Holmes McGuire VA Medical Center · USVirginia Commonwealth University · US

Funding

U.S. Department of Veterans Affairs (VA) 1 I01 RX002649-01A
6 · The paper itself

Abstract

STUDY

designCross-sectional study.

objectivesTo compare muscle size, body composition, bone mineral density (BMD), and metabolic profiles in denervated versus innervated individuals with spinal cord injury (SCI).

settingHunter Holmes McGuire Veterans Affairs (VA) Medical Center.

methodsBody composition, bone mineral density (BMD), muscle size, and metabolic parameters were collected in 16 persons with chronic SCI (n = 8 denervated, n = 8 innervated) using dual-energy x-ray absorptiometry (DXA), magnetic resonance imaging (MRI), and fasting blood samples. BMR was measured by indirect calorimetry.

resultsPercent differences of the whole thigh muscle cross-sectional area (CSA; 38%), knee extensor CSA (49%), vasti CSA (49%), and rectus femoris CSA (61%) were smaller in the denervated group (p < 0.05). Leg lean mass was also lower (28%) in the denervated group (p < 0.05). Whole muscle intramuscular fat (IMF%; 15.5%), knee extensor IMF% (22%), and % fat mass (10.9%) were significantly greater in the denervated group (p < 0.05). Knee distal femur and proximal tibia BMD were lower in the denervated group, 18-22% and 17-23%; p < 0.05. Certain indices of metabolic profile were more favorable in the denervated group though were not significant.

conclusionsSCI results in skeletal muscle atrophy and dramatic changes in body composition. Lower motor neuron (LMN) injury results in denervation of the lower extremity muscles which exacerbates atrophy. Denervated participants exhibited lower leg lean mass and muscle CSA, greater muscle IMF, and reduced knee BMD compared to innervated participants. Future research is needed to explore therapeutic treatments for the denervated muscles after SCI.

Indexed as

Bone DensitySpinal Cord InjuriesAbsorptiometry, PhotonCross-Sectional StudiesDenervationHumansLower ExtremityMuscle, Skeletal

Identifiers

PMID36899099
OpenAlexW4323842563

What OpenQuestion holds

Textmetadata
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Registered trials

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.