Evidence map›Paper›PMID 39227870›Full record

ArticleJournal of inflammation (London, England)2024

Sonic Hedgehog reduces inflammatory response, decreases blood-spinal cord barrier permeability, and improves locomotor function recovery in an acute spinal cord injury rat model.

Mohamed Tail, Hao Zhang, Guoli Zheng, Anna-Kathrin Harms, Maryam Hatami, Thomas Skutella, Karl Kiening, Andreas Unterberg, Klaus Zweckberger, Alexander Younsi

Abstract read
In one paragraph

Article in Journal of inflammation (London, England), 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing 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

7 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. 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

10 authors.

Mohamed TailDepartment of Neurosurgery, Heidelberg University Hospital, 69120, Heidelberg, Germany.
Hao ZhangDepartment of Neurosurgery, Heidelberg University Hospital, 69120, Heidelberg, Germany.
Guoli ZhengDepartment of Neurosurgery, Heidelberg University Hospital, 69120, Heidelberg, Germany.
Anna-Kathrin HarmsDepartment of Neurosurgery, Heidelberg University Hospital, 69120, Heidelberg, Germany.
Maryam HatamiDepartment of Neuroanatomy, Institute for Anatomy and Cell Biology, Heidelberg University, 69120, Heidelberg, Germany.
Thomas SkutellaDepartment of Neuroanatomy, Institute for Anatomy and Cell Biology, Heidelberg University, 69120, Heidelberg, Germany.
Karl KieningDepartment of Neurosurgery, Heidelberg University Hospital, 69120, Heidelberg, Germany.
Andreas UnterbergDepartment of Neurosurgery, Heidelberg University Hospital, 69120, Heidelberg, Germany.
Klaus ZweckbergerDepartment of Neurosurgery, Heidelberg University Hospital, 69120, Heidelberg, Germany.
Alexander YounsiDepartment of Neurosurgery, Heidelberg University Hospital, 69120, Heidelberg, Germany. alexander.younsi@med.uni-heidelberg.de.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSonic Hedgehog (Shh), extensively researched for its role in early neurogenesis and brain development, has recently been recognized for its neuroprotective potential following neuronal injuries. This study examines the immediate impact of early administered Shh on the local inflammatory response post-acute spinal cord injury in rats.

methodsThirty-four female Wistar rats underwent either sham surgery (laminectomy; n = 10) or clip compression/contusion spinal cord injury (SCI) at the T9 level. This was followed by implantation of an osmotic pump and a subdural catheter for continuous intrathecal delivery of Shh (n = 12) or placebo (NaCl; n = 12). Locomotor function was assessed at 3- and 7-days post-injury (dpi) using the Basso, Beattie, and Bresnahan (BBB) score and the Gridwalk test. Animals were euthanized after 3 or 7 days for immunohistochemical analysis of the local inflammatory reaction and immune cell migration.

resultsShh-treated rats demonstrated significant hindlimb movement and coordination improvements at 7 days post-injury, compared to controls. This enhancement was accompanied by a significant reduction in both immune cell presence and blood plasma products within spinal cord lesions, suggesting Shh's dual role in modulating immune cell migration and maintaining the integrity of the blood-spinal cord barrier. Separately, these Shh-treated rats also showed an increase in M(IL-4) polarization of macrophages, further underlining the potential therapeutic impact of Shh in post-injury recovery. Notably, these effects were not evident at three days post-injury.

conclusionShh application at 7 days post-injury showed immunomodulatory effects, possibly via enhanced blood-spinal cord barrier integrity, reduced immune cell migration, and increased anti-inflammatory immune cell differentiation. These mechanisms collectively contribute to enhanced locomotor recovery.

Indexed as

BSCBInflammationSCISonic HedgehogSpinal cord injury

Identifiers

PMID39227870
PMCPMC11373473

What Socratic holds

Textmetadata
LicenceCC BY
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 Socratic graph.