Evidence map›Paper›PMID 33818507›Full record

ArticleNeural regeneration research2021

Low-dose metformin treatment in the subacute phase improves the locomotor function of a mouse model of spinal cord injury.

Wen-Ye Song, Han Ding, Tiffany Dunn, Jun-Ling Gao, Javier Allende Labastida, Caitlin Schlagal, Guang-Zhi Ning, Shi-Qing Feng, Ping Wu

Open access · goldAbstract read
In one paragraph

Article in Neural regeneration research, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed, 1 pooled it
2.0field-weighted citation impact, top 14% 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

9 citing papers in PubMed, 1 synthesis or guideline pooled it, 17 citations in OpenAlex.

  1. Pooled it
  2. Article
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  5. Article
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  9. Review
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 at 2 institutions in 2 countries.

Wen-Ye SongDepartment of Neuroscience, Cell Biology & Anatomy, University of Texas Medical Branch at Galveston, Galveston, TX, USA; Department of Orthopedics, Tianjin Medical University General Hospital, Tianjin, China.
Han DingDepartment of Neuroscience, Cell Biology & Anatomy, University of Texas Medical Branch at Galveston, Galveston, TX, USA; Department of Orthopedics, Tianjin Medical University General Hospital, Tianjin, China.
Tiffany DunnDepartment of Neuroscience, Cell Biology & Anatomy, University of Texas Medical Branch at Galveston, Galveston, TX, USA.
Jun-Ling GaoDepartment of Neuroscience, Cell Biology & Anatomy, University of Texas Medical Branch at Galveston, Galveston, TX, USA.
Javier Allende LabastidaDepartment of Neuroscience, Cell Biology & Anatomy, University of Texas Medical Branch at Galveston, Galveston, TX, USA.
Caitlin SchlagalDepartment of Neuroscience, Cell Biology & Anatomy, University of Texas Medical Branch at Galveston, Galveston, TX, USA.
Guang-Zhi NingDepartment of Orthopedics, Tianjin Medical University General Hospital, Tianjin, China.
Shi-Qing FengDepartment of Orthopedics, Tianjin Medical University General Hospital, Tianjin, China.
Ping WuDepartment of Neuroscience, Cell Biology & Anatomy, University of Texas Medical Branch at Galveston, Galveston, TX, USA.
The University of Texas Medical Branch at Galveston · USTianjin Medical University General Hospital · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Metformin, a first-line drug for type-2 diabetes, has been shown to improve locomotor recovery after spinal cord injury. However, there are studies reporting no beneficial effect. Recently, we found that high dose of metformin (200 mg/kg, intraperitoneal) and acute phase administration (immediately after injury) led to increased mortality and limited locomotor function recovery. Consequently, we used a lower dose (100 mg/kg, i.p.) metformin in mice, and compared the effect of immediate administration after spinal cord injury (acute phase) with that of administration at 3 days post-injury (subacute phase). Our data showed that metformin treatment starting at the subacute phase significantly improved mouse locomotor function evaluated by Basso Mouse Scale (BMS) scoring. Immunohistochemical studies also revealed significant inhibitions of microglia/macrophage activation and astrogliosis at the lesion site. Furthermore, metformin treatment at the subacute phase reduced neutrophil infiltration. These changes were in parallel with the increased survival rate of spinal neurons in animals treated with metformin. These findings suggest that low-dose metformin treatment for subacute spinal cord injury can effectively improve the functional recovery possibly through anti-inflammation and neuroprotection. This study was approved by the Institute Animal Care and Use Committee at the University of Texas Medical Branch (approval No. 1008041C) in 2010.

Indexed as

inflammationlocomotor functionmetforminmicrogliamortalityneuroprotectionspinal cord injurysubacute administration

Identifiers

PMID33818507
PMCPMC8354108
OpenAlexW3150317860

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-SA
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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.