Abstract
Background
This present study evaluates the pre-clinical evidence on the efficacy of NS/PC and scaffold (NS/PC + scaffold) transplantation on locomotor recovery after traumatic spinal cord injury (SCI).
Method
Two independent reviewers screened the records gathered through a systematic search in MEDLINE, Embase, Scopus, and Web of Sciences databases. Studies on rats/mice evaluating the efficacy of simultaneous transplantation of NS/PCs and scaffold in the treatment of SCI were included. The results were reported as standardized mean difference (SMD) and 95% confidence interval (95% CI).
Results
Forty-seven articles were retrieved. Analyses showed that NS/PC + scaffold transplantation significantly improved locomotion in animals with SCI compared to that of the non-treatment group (SMD = 2.71, 95% CI: 1.89 to 3.54; I2 = 95.15%, p < 0.0001), scaffold alone (SMD = 2.28; 95% CI: 1.56 to 3.00; I2 = 94.38%; p < 0.0001), and NS/PCs alone (SMD = 1.74, 95% CI: 0.64 to 2.83; I2 = 92.02%, p < 0.0001). Moreover, the effectiveness of the treatment significantly increases when PLGA-based scaffolds and antibiotics are used. In addition, the NS/PC + scaffold transplantation during the first week after injury led to a significant improvement in locomotion, while concomitant transplantation of NS/PC + scaffold did not improve locomotion in cervical lesions.
Conclusion
The findings showed that using NS/PCs with scaffold not only improves locomotion recovery, but also is superior to NS/PCs alone and scaffold alone. Future experiments and translational clinical studies are recommended to focus on the assessment of the safety and efficacy of the application of NS/PC + scaffold on SCI recovery.
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Availability of data and materials
All data generated or analyzed during this study are included in this published article.
Code availability
Not applicable.
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This research has been supported by the Tehran University of Medical Sciences and Health Services and the Iran Ministry of Health and Medical Education (Grant number: 96-04-159-36946).
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MY, VR, and MH designed the study. MY, SA, SNM, and LH gathered the data. MH analyzed the data. VR, MY, ARV, JSH, and YL interpreted the findings. MY wrote the first draft, and other authors critically revised the manuscript.
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Yousefifard, M., Askarian-Amiri, S., Nasseri Maleki, S. et al. Combined application of neural stem/progenitor cells and scaffolds on locomotion recovery following spinal cord injury in rodents: a systematic review and meta-analysis. Neurosurg Rev 45, 3469–3488 (2022). https://doi.org/10.1007/s10143-022-01859-4
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DOI: https://doi.org/10.1007/s10143-022-01859-4