Abstract
Purpose
It is an open question whether cell transplantation can provide safety and effective outcome to spinal cord injury (SCI) patient which has remained controversial for almost 40 years. This study aimed to evaluate the safety and efficacy of cell transplantation in SCI patients.
Method
Studies of the cell transplantation for SCI were retrieved from PubMed, Embase, Medline, Cochrane Library and analyzed quantitative data by Review Manager 5.3.
Results
Twenty-one clinical controlled studies with 973 patients were included. The pooled results suggested that cell transplantation significantly improved ASIA score, ASIA motor score, ASIA sensory score, Barthel Index score, residual urine volume, rehabilitative time of automatic micturition. Furthermore, subgroup analysis indicated that the stem cells exhibited more potent than the non-stem cells in spinal cord repair. Cell transplantation at more than 14 days after injury showed more significant improvements than that within 14 days from injury. The dosage of cell transplantation between 1–5 × 107 and 10–20 × 107 was the potent quantity for the patient with SCI. Intrathecal injection and intravenous + intrathecal injection showed more superior to the other method. The top 5 adverse events were febrile reaction (11.5%), neurologic pain (11.3%), headache (2.6%), neurologic deterioration (2.4%), and rigidity or spasticity (1.6%).
Conclusion
Cell transplantation appears to be a safe therapeutic strategy possessing substantial beneficial effects in the patients with SCI in clinic. Moreover, treating SCI with stem cell, the dosage of cells between 1–5 × 107 and 10–20 × 107, in intermediate or chronic phase, minimally invasive techniques, may bring more advantage to SCI patient.
Graphical abstract
These slides can be retrieved under Electronic Supplementary Material.
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Change history
23 June 2020
Zhao-he and Sun-qingling are the co-first authors for this manuscript in the initial submission. Because of author���s negligence and fault, this information was not shown clearly in the originally published article.
Abbreviations
- ADSCs:
-
Adipose-derived stem cells
- BMSCs:
-
Bone mesenchymal stem cell
- MMCs:
-
Marrow mononuclear cells
- UCMSCs:
-
Umbilical cord-derived mesenchymal stem cells
- OECs:
-
Olfactory ensheathing cells
- AIM:
-
Autologous incubated macrophage
- SCs:
-
Schwann cells
- OLP:
-
Olfactory lamina propria
- GM-CSF:
-
Granulocyte-macrophage colony-stimulating factor
- FB-DNS/PCs:
-
Fetal brain-derived neural stem/progenitor cell
- CNS:
-
Central nervous system
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Acknowledgments
Thank you so much for contributions made by all members of Pro. Xiu-Mei Wang`s group (School of Materials Science and Engineering, Tsinghua University). Thank you so much for contributions made by all members in department of orthopedics III (Dongzhimen Hospital, Beijing University of Chinese Medicine). Thank you so much for contributions made by Dr. Feng-He (China Academy of Chinese Medical Science), Dr. Wan-Jie Gu (Drum Tower, Medical College of Nanjing University), Dr. Yun-Tao Zhao(Aerospace Center Hospital, Peking University).
Funding
This work was funded by the National Twelfth Five-Year Plan for Science and Technology Support (Grant No. 2012BAI18B05).
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Contributions
HZ, XMW, and XY designed the systematic review. HZ and QLS drafted the protocol, and LJD, YDY, YSG, and DYZ revised the manuscript. YX and HJW will independently screen the potential studies, extract data, assess the risk of bias, and finish data synthesis. JWS and KTY will arbitrate any disagreements during the review. All authors approved the publication of the manuscript.
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Electronic supplementary material
Below is the link to the electronic supplementary material.
Supplement 1
ASIA subgroup stem cell VS. non-stem cell (TIFF 1367 kb)
Supplement 2
ASIA subgroup phase (TIFF 1520 kb)
Supplement 3
ASIA subgroup cell number (TIFF 1630 kb)
Supplement 4
ASIA motion subgroup stem cell VS. non-stem cell (TIFF 1488 kb)
Supplement 5
ASIA motion subgroup phase (TIFF 1618 kb)
Supplement 6
ASIA motion subgroup cell number (TIFF 1723 kb)
Supplement 7
ASIA sensation subgroup stem cell VS. non-stem cell (TIFF 1497 kb)
Supplement 8
ASIA sensation subgroup phase (TIFF 1635 kb)
Supplement 9
ASIA sensation subgroup cell number (TIFF 1742 kb)
Supplement 10
ASIA subgroup cell transplantation techniques (TIFF 1632 kb)
Supplement 11
ASIA motion subgroup cell transplantation techniques (TIFF 2174 kb)
Supplement 12
ASIA sensation subgroup cell transplantation techniques (TIFF 2215 kb)
Supplement 13
Sensitive analysis of cell transplantation techniques in ASIA score (TIFF 1176 kb)
Supplement 14
Sensitive analysis of cell transplantation techniques in ASIA motion (TIFF 1250 kb)
Supplement 15
Sensitive analysis of cell transplantation techniques in ASIA sensation (TIFF 1263 kb)
Supplement 16
Barthal Index subgroup stem cell VS. non-stem cell (TIFF 853 kb)
Supplement 17
Barthal Index subgroup phase (TIFF 855 kb)
Supplement 18
Barthal Index subgroup cell number (TIFF 1211 kb)
Supplement 19
Residental urinal subgroup stem cell VS. non-stem cell (TIFF 615 kb)
Supplement 20
Rehabilitative time of automatic micturition subgroup stem cell VS. non-stem cell (TIFF 678 kb)
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Zhao, H., Sun, QL., Duan, LJ. et al. Is cell transplantation a reliable therapeutic strategy for spinal cord injury in clinical practice? A systematic review and meta-analysis from 22 clinical controlled trials. Eur Spine J 28, 1092–1112 (2019). https://doi.org/10.1007/s00586-019-05882-w
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DOI: https://doi.org/10.1007/s00586-019-05882-w