Evidence map›Paper›PMID 28556093›Full record

ArticleMuscle & nerve2018

Recovery of rat muscle size but not function more than 1 year after a single botulinum toxin injection.

Samuel R Ward, Viviane B Minamoto, Kentaro P Suzuki, Jonah B Hulst, Shannon N Bremner, Richard L Lieber

Abstract read
In one paragraph

Article in Muscle & nerve, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing 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

15 citing papers in PubMed.

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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors.

Samuel R WardDepartment of Orthopaedic Surgery, University of California San Diego, La Jolla, California, USA.
Viviane B MinamotoDepartment of Orthopaedic Surgery, University of California San Diego, La Jolla, California, USA.
Kentaro P SuzukiDepartment of Orthopaedic Surgery, University of California San Diego, La Jolla, California, USA.
Jonah B HulstDepartment of Orthopaedic Surgery, University of California San Diego, La Jolla, California, USA.
Shannon N BremnerDepartment of Orthopaedic Surgery, University of California San Diego, La Jolla, California, USA.
Richard L LieberDepartment of Orthopaedic Surgery, University of California San Diego, La Jolla, California, USA.ORCID 0000-0002-7203-4520

Funding

National Center for Muscle Rehabilitation ResearchR24HD050837 · NICHD · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI LIEBER, RICHARD L., WARD, SAMUEL RICHARD · 2005 to 2014
$7.2M
Muscle Structure, Toxin Dose, and Exercise Affect Botulinum Toxin EfficiencyR01AR057013 · NIAMS · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI WARD, SAMUEL RICHARD · 2009 to 2013
$1.5M
NIAMS NIH HHS R01 AR057013NICHD NIH HHS R24 HD050837RRD VA I01 RX000670
6 · The paper itself

Abstract

introductionNeurotoxin injection is used to treat a wide variety of neuromuscular disorders. The purpose of this study was to measure the functional and structural properties of botulinum toxin-injected adult rat skeletal muscle over nearly the entire lifespan.

methodsTen groups of animals were subjected to either neurotoxin injection [Botox, Type A (BT-A); Allergan, Irvine, California] or saline solution injection. Neurotoxin-injected animals (n = 90) were analyzed at different time-points: 1 week; 1 month; 3 months; 6 months; 12 months; or 18 months.

resultsIn spite of the recovery of structural features, such as muscle mass and fiber area, dorsiflexion torque production remained significantly depressed by 25%, even at 12 months after neurotoxin injection. DISCUSSION: The data demonstrate that, after a single BT-A injection, although gross muscle morphology recovered over a 12-month time period, loss of contractile function did not recover. Muscle Nerve 57: 435-441, 2018.

Indexed as

AnimalsBotulinum Toxins, Type AInjections, IntramuscularMaleMuscle ContractionMuscle, SkeletalMuscle StrengthNeurotoxinsOrgan SizeRatsRats, Sprague-DawleyBotulinum Toxins, Type ANeurotoxinsagingBotoxdenervation neurotoxinmuscle fiber typemuscle physiologyneuromuscular junction

Identifiers

PMID28556093
PMCPMC5702600

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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.