Evidence map›Paper›PMID 18006586›Full record

ArticleThe Journal of physiology2008

Does elimination of afferent input modify the changes in rat motoneurone properties that occur following chronic spinal cord transection?

Duane C Button, Jayne M Kalmar, Kalan Gardiner, Tanguy Marqueste, Hui Zhong, Roland R Roy, V Reggie Edgerton, Phillip F Gardiner

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of physiology, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed, 1 pooled it
2.7field-weighted citation impact, top 10% 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

30 citing papers in PubMed, 1 synthesis or guideline pooled it, 57 citations in OpenAlex.

  1. Pooled it
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  6. IThe Journal of physiology · 2019
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  13. Effects of exercise training on urinary tract function after spinal cord injury.American journal of physiology. Renal physiology · 2016
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors at 2 institutions in 2 countries.

Duane C ButtonSpinal Cord Research Centre, Department of Physiology, University of Manitoba, 730 William Avenue, 436 BMSB, Winnipeg, Manitoba, Canada R3E 3J7.
Jayne M Kalmar
Kalan Gardiner
Tanguy Marqueste
Hui Zhong
Roland R Roy
V Reggie Edgerton
Phillip F Gardiner
University of Manitoba · CAUniversity of California, Los Angeles · US

Funding

USE DEPENDENT MOLECULAR MODULATION OF RAT HINDLIMB MUSCLESP01NS016333 · NINDS · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI ROY, ROLAND R · 1985 to 2007
$9.9M
NINDS NIH HHS NS 16333NINDS NIH HHS P01 NS016333
6 · The paper itself

Abstract

The purpose of this study was to determine the effects of 6-8 weeks of chronic spinal cord isolation (SI, removal of descending, ascending and afferent inputs), compared with the same duration of spinal cord transection (ST, removal of descending input only) on hindlimb motoneurone biophysical properties. Adult female Sprague-Dawley rats were placed into three groups: (1) control (no removal of inputs), (2) ST and (3) SI. The electrophysiological properties from sciatic nerve motoneurones were recorded from deeply anaesthetized rats. Motoneurones in SI rats had significantly (P < 0.01) lower rheobase currents and higher spike afterhyperpolarization amplitudes and input resistances compared with motoneurones in control rats. A higher percentage (chi2, P = 0.01) of motoneurones in SI than control rats demonstrated frequency-current (f-I) relationships consistent with activation of persistent inward currents. Motoneurone steady state f-I slopes determined by increasing steps of 500 ms current pulses were significantly lower (P < 0.02) in SI than control rats. Motoneurone spike frequency adaptation measured using 30 s square-wave current injections (1.5-3.0 nA above the estimated rhythmic firing threshold), was similar for control and SI motoneurones. Changes in motoneurone properties following SI did not differ from ST. These findings indicate that the removal of afferent and ascending inputs along with descending inputs has little additional affect on motoneurone properties than removal of descending inputs alone. This study is the first to demonstrate that intact ascending and afferent input does not modify the effects of spinal transection on basic and rhythmic firing properties of rat hindlimb motoneurones.

Indexed as

Action PotentialsAnimalsElectrophysiologyFemaleHindlimbMotor NeuronsNeurons, AfferentRatsRats, Sprague-DawleySpinal CordSpinal Cord Injuries

Identifiers

PMID18006586
PMCPMC2375592
OpenAlexW1549249261

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.