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The Effect of Bone Marrow-Derived Mesenchymal Stem Cell Transplantation on Allodynia and Hyperalgesia in Neuropathic Animals: A Systematic Review With Meta-Analysis Publisher Pubmed



Hosseini M1 ; Yousefifard M2 ; Aziznejad H3 ; Nasirinezhad F4
Authors
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Authors Affiliations
  1. 1. Department of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
  2. 2. Department of Physiology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
  3. 3. The Persian Gulf Tropical Medicine Research Center, Bushehr University of Medical Sciences, Bushehr, Iran
  4. 4. Physiology Research Center, Department of Physiology, Iran University of Medical Sciences, Tehran, Iran

Source: Biology of Blood and Marrow Transplantation Published:2015


Abstract

Stem cell transplantation has been considered a possible therapeutic method for neuropathic pain. However, no quantitative data synthesis of stem cell therapy for neuropathic pain exists. Therefore, the present systematic review and meta-analysis assessed the efficacy of bone marrow mesenchymal stem cell (BMMSC) transplantation on alleviating pain symptoms in animal models of neuropathic pain. In the present meta-analysis, controlled animal studies assessing the effect of administrating BMMSC on neuropathic pain were included through an extensive literature search of online databases. After collecting data, effect sizes were computed and the standardized mean difference (SMD) with 95% confidence interval (CI) was entered in all analyses. Random-effects models were used for data analysis. Sensitivity and subgroup analyses were performed to investigate expected or measured heterogeneity. Finally, 14 study were included. The analyses showed that BMMSC transplantation lead to significant improvement on allodynia (SMD = 2.06; 95% CI, 1.09 to 3.03; I2 = 99.7%; P < .001). The type of neuropathy (P =036), time between injury and intervention (P =02), and the number of transplanted cells (P = 023) influence the improvement of allodynia after BMMSC transplantation. BMMSC transplantation has no effect on hyperalgesia (SMD =3; 95% CI, -1.09 to 1.68; I2 = 100%; P <001) unless it occurs during the first 4 days after injury (P =02). The present systematic review with meta-analysis suggests that BMMSC transplantation improves allodynia but does not have any significant effect on hyperalgesia unless it is given during the first 4 days after injury. © 2015 American Society for Blood and Marrow Transplantation.
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