alexa Salvianolic acid B promotes survival of transplanted mesenchymal stem cells in spinal cord-injured rats.
Engineering

Engineering

Advances in Robotics & Automation

Author(s): Bi XB, Deng YB, Gan DH, Wang YZ

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Abstract AIM: Stem cells hold great promise for brain and spinal cord injuries (SCI), but cell survival following transplantation to adult central nervous system has been poor. Salvianolic acid B (Sal B) has been shown to improve functional recovery in brain-injured rats. The present study was designed to determine whether Sal B could improve transplanted mesenchymal stem cell (MSC) survival in SCI rats. METHODS: SCI rats were treated with Sal B. The Basso-Beatie-Bresnahan (BBB) scale was used to test the functional recovery. Sal B was used to protect MSC from being damaged by TNF-alpha in vitro. Bromodeoxyuridine-labeled MSC were transplanted into SCI rats with Sal B intraperitoneal injection, simultaneously. MSC were examined, and the functional recovery of the SCI rats was tested. RESULTS: Sal B treatment significantly reduced the lesion area from 0.26+/-0.05 mm2 to 0.15+/-0.03 mm2 (P<0.01) and remarkably raised the BBB scores on d 28, post-injury, from 7.3+/-0.9 to 10.5+/-1.3 (P<0.05), compared with the phosphate-buffered saline (PBS) control group. MSC were protected from the damage of TNF-alpha by Sal B. The number of surviving MSC in the MSC plus Sal B groups were 1143.3+/-195.6 and 764.0+/-81.3 on d 7 and 28, post-transplantation, more than those in the MSC group, which was 569.3+/-72.3 and 237.0+/-61.3, respectively (P<0.05). Rats with MSC transplanted and Sal B injected obtained higher BBB scores than those with MSC transplanted alone (P<0.05) and PBS (P<0.01). CONCLUSION: Sal B provides neuroprotection to SCI and promotes the survival of MSC in vitro and after cell transplantation to the injured spinal cord in vivo. This article was published in Acta Pharmacol Sin and referenced in Advances in Robotics & Automation

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