Human Placental Mesenchymal Stem Cell-Derived Exosomes in Combination With Hyperbaric Oxygen Synergistically Promote Recovery After Spinal Cord Injury in Rats Publisher Pubmed



Cheshmi H¹ ; Mohammadi H² ; Akbari M³ ; Nasiry D⁴ ; Rezapournasrabad R⁵ ; Bagheri M⁶ ; Abouhamzeh B⁷ ; Poorhassan M⁸ ; Mirhoseini M⁴ ; Mokhtari H⁴ ; Akbari E⁹ ; Raoofi A¹⁰ Show Affiliations
Source: Neurotoxicity Research Published:2023

Abstract

Spinal cord injury (SCI) is a critical medical condition during which sensorimotor function is lost. Current treatments are still unable to effectively improve these conditions, so it is important to pay attention to other effective approaches. Currently, we investigated the combined effects of human placenta mesenchymal stem cells (hPMSCs)-derived exosomes along with hyperbaric oxygen (HBO) in the recovery of SCI in rats. Ninety male mature Sprague-Dawley (SD) rats were allocated into five equal groups, including; sham group, SCI group, Exo group (underwent SCI and received hPMSCs-derived exosomes), HBO group (underwent SCI and received HBO), and Exo+HBO group (underwent SCI and received hPMSCs-derived exosomes plus HBO). Tissue samples at the lesion site were obtained for the evaluation of stereological, immunohistochemical, biochemical, molecular, and behavioral characteristics. Findings showed a significant increase in stereological parameters, biochemical factors (GSH, SOD, and CAT), IL-10 gene expression and behavioral functions (BBB and EMG Latency) in treatment groups, especially Exo+HBO group, compared to SCI group. In addition, MDA levels, the density of apoptotic cells and gliosis, as well as expression of inflammatory genes (TNF-α and IL-1β) were considerably reduced in treatment groups, especially Exo+HBO group, compared to SCI group. We conclude that co-administration of hPMSCs-derived exosomes and HBO has synergistic neuroprotective effects in animals undergoing SCI. © 2023, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.