Evidence map›Paper›PMID 34491566›Full record

ArticleDaru : journal of Faculty of Pharmacy, Tehran University of Medical Sciences2021

Facile fabrication of an erythropoietin-alginate/chitosan hydrogel and evaluation of its local therapeutic effects on spinal cord injury in rats.

Mahdi Gholami, Hassan Gilanpour, Javad Sadeghinezhad, Ahmad Asghari

Open access · greenAbstract read
In one paragraph

Article in Daru : journal of Faculty of Pharmacy, Tehran University of Medical Sciences, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 1 pooled it
1.4field-weighted citation impact, top 20% 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

11 citing papers in PubMed, 1 synthesis or guideline pooled it, 15 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Review
  4. Article
  5. Article
  6. Article
  7. Research Progress on Biomaterials for Spinal Cord Repair.International journal of nanomedicine · 2025
    Review
  8. Effect of melatonin loaded chitosan hydrogel on rat spinal cord injury.Veterinary research forum : an international quarterly journal · 2025
    Article
  9. Article
  10. Review
  11. 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

4 authors at 2 institutions in 1 country.

Mahdi GholamiDepartment of Basic Science and Hygiene, Science and Research Branch, Islamic Azad University, Tehran, Iran.
Hassan GilanpourDepartment of Basic Science and Hygiene, Science and Research Branch, Islamic Azad University, Tehran, Iran. gilanpourhassan@gmail.com.
Javad SadeghinezhadDepartment of Basic Science, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran.
Ahmad AsghariDepartment of Clinical Science, Science and Research Branch, Islamic Azad University, Tehran, Iran.
Islamic Azad University, Science and Research Branch · IRUniversity of Tehran · IR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

BACKGROUND AND

objectiveSpinal cord injury (SCI) is a major disabling disorder for which no effective treatment has yet been found. Regenerative incapability of neuronal cells as well as the secondary mechanisms of injury are the major reasons behind this clinical frustration. Thus, here we fabricated an erythropoietin-chitosan/alginate (EPO-CH/AL) hydrogel and investigated its local therapeutic effects on the apoptotic and inflammatory indices of SCI secondary injury.

methodsEPO-CH/AL hydrogels were fabricated by the ionic gelation method, and they were characterized using SEM and FTIR. In vitro drug release profile of EPO-CH/AL hydrogels was evaluated by UV-vis spectroscopy. Experimental SCI was inflicted in rats which were then treated with CH/AL hydrogels containing different doses of EPO (1000, 5000 and 10,000 IU/kg). The relative expression of Bax and Bcl2 (apoptosis index) and active and inactive forms of NF-κB (inflammation index) were assessed using western blot. Total serum levels of TNF-α were also assessed with ELISA, and histopathological and immunohistochemistry studies were carried out to check the overall changes in the injured tissues.

resultsIn vitro drug release test indicated that the EPO-CH/AL hydrogels had a sustained- and controlled-release profile for EPO under these conditions. All the fabricated hydrogels dramatically reduced the elevated inflammation and apoptosis indices of the SCI-inflicted rats (p ≤ 0.05). Nevertheless, only EPO-CH/AL hydrogel (1000 IU/kg EPO) significantly improved the tissue repair and histopathological appearance of the spinal cord at the sites of injury.

conclusionBased on our findings, EPO-CH/AL hydrogel (1000 IU/kg EPO) can effectively improve experimental SCI in rats via inhibiting apoptosis and inflammation. Further studies are warranted to elucidate the contributing role of the scaffold in the observed effects.

Indexed as

AlginatesAnimalsbcl-2-Associated X ProteinCell LineCell SurvivalChitosanDisease Models, AnimalDose-Response Relationship, DrugErythropoietinGene Expression RegulationHumansHydrogelsMaleNF-kappa BProto-Oncogene Proteins c-bcl-2Random AllocationAlginatesBax protein, ratbcl-2-Associated X ProteinBcl2 protein, ratChitosanErythropoietinHydrogelsNF-kappa BProto-Oncogene Proteins c-bcl-2Tumor Necrosis Factor-alphaAlginateApoptosisChitosanErythropoietinInflammationSpinal cord injury

Identifiers

PMID34491566
PMCPMC8602718
OpenAlexW3198830377

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.