Evidence map›Paper›PMID 39020391›Full record

ArticleStem cell research & therapy2024

Efficacy of using adipose-derived stem cells and PRP on regeneration of 40 -mm long sciatic nerve defect bridged by polyglycolic-polypropylene mesh in canine model.

Mona M Khaled, Asmaa M Ibrahium, Ahmed I Abdelgalil, Mohamed A El-Saied, Aya M Yassin, Nagy Abouquerin, Hamdy Rizk, Samah H El-Bably

RetractedAbstract readRetracted Publication
In one paragraph

Article in Stem cell research & therapy, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It has been retracted, and should not be counted. Cited by 5 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed, 1 pooled it
–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

5 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Review
  4. Review
  5. Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors.

Mona M KhaledDepartment of Anatomy & Embryology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt. mona.mohamed@vet.cu.edu.eg.
Asmaa M IbrahiumDepartment of Anatomy & Embryology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt.
Ahmed I AbdelgalilDepartment of Surgery, Anesthesiology and Radiology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt.
Mohamed A El-SaiedDepartment of Pathology, Faculty of Veterinary of Veterinary Medicine, Cairo University, Giza, Egypt.
Aya M YassinDepartment of Biochemistry and Molecular Biology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt.
Nagy AbouquerinDepartment of Physiology, Faculty of medicine, Ain shams University, Cairo, Egypt.
Hamdy RizkDepartment of Anatomy & Embryology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt.
Samah H El-BablyDepartment of Anatomy & Embryology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSciatic nerve repair becomes a focus of research in neurological aspect to restore the normal physical ability of the animal to stand and walk. Tissue engineered nerve grafts (TENGs) provide a promising alternative therapy for regeneration of large gap defects. The present study investigates the regenerative capacity of PRP, ADSCs, and PRP mixed ADSCs on a long sciatic nerve defect (40-mm) bridged by a polyglycolic polypropylene (PGA-PRL) mesh which acts as a neural scaffold. MATERIALS AND

methodsThe study was conducted on 12 adult male mongrel dogs that were randomly divided into 4 groups: Group I (scaffold group); where the sciatic defect was bridged by a (PGA-PRL) mesh only while the mesh was injected with ADSCs in Group II (ADSCs group), PRP in Group III (PRP group). Mixture of PRP and ADSCs was allocated in Group IV (PRP + ADSCs group). Monthly, all animals were monitored for improvement in their gait and a numerical lameness score was recorded for all groups. 6 months-post surgery, the structural and functional recovery of sciatic nerve was evaluated electrophysiologically, and on the level of gene expression, and both sciatic nerve and the gastrocnemius muscle were evaluated morphometrically, histopathologically.

resultsNumerical lameness score showed improvement in the motor activities of both Group II and Group III followed by Group IV and the scaffold group showed mild improvement even after 6 months. Histopathologically, all treated groups showed axonal sprouting and numerous regenerated fascicles with obvious angiogenesis in proximal cut, and distal portion where Group IV exhibited a significant remyelination with the MCOOL technique. The regenerative ratio of gastrocnemius muscle was 23.81%, 56.68%, 52.06% and 40.69% for Group I, II, III and IV; respectively. The expression of NGF showed significant up regulation in the proximal portion for both Group III and Group IV (P ≤ 0.0001) while Group II showed no significant difference. PDGF-A, and VEGF expressions were up-regulated in Group II, III, and IV whereas Group I showed significant down-regulation for NGF, PDGF-A, and VEGF (P ≤ 0.0001).

conclusionADSCs have a great role in restoring the damaged nerve fibers by secreting several types of growth factors like NGF that have a proliferative effect on Schwann cells and their migration. In addition, PRP therapy potentiates the effect of ADSCs by synthesis another growth factors such as PDGF-A, VEGF, NGF for better healing of large sciatic gap defects.

Indexed as

Nerve RegenerationPolypropylenesSciatic NerveAdipose TissueAnimalsDisease Models, AnimalDogsMalePlatelet-Rich PlasmaPolyglycolic AcidStem CellsStem Cell TransplantationTissue EngineeringTissue ScaffoldsPolyglycolic AcidPolypropylenesAdipose-derived stem cellsDogsGrowth factorsNeural tubePRPSciatic nerve regeneration

Identifiers

PMID39020391
PMCPMC11256418

What OpenQuestion holds

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Registered trials

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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.