Application of green-synthesized cerium oxide nanoparticles to treat spinal cord injury and cytotoxicity evaluation on paediatric leukaemia cells

Abstract Introduction: The present study, investigated the local injection of cerium oxide nanoparticles (CeONPs) into Spinal cord injury (SCI) lesions in rats, and the effect on motor performance and neuropathic pain, together with biochemical markers.Methods: 36 adult male Wistar rats were divided into 4 groups: control group (healthy animals); sham group (laminectomy); SCI group (laminectomy+SCI induction); treatment group (laminectomy + SCI induction + intrathecal injection of 10 µL of CeONPs (1000 µg/mL) immediately after injury). SCI was induced by application of an aneurysm clip at the T12-T13 vertebral region. Immediately after SCI, CeONPs were injected into the treatment group with a Hamilton syringe and micropipet. H&E staining and measurement of the size of the cavity were performed after 6 weeks, and the BBB motor performance test and pain threshold test were performed weekly. GCSF expression, P44/42 MAPK (ERK1/ERK2), P-P44/42 MAPK (ERK1/ERK2), total Tau, total MAG, β-actin were evaluated after 6 weeks.Results: The BBB score and pain threshold improved in animals receiving CeONPs compared with SCI animals. The size of the cavity decreased in the treatment group. GCSF protein expression levels were similar in animals receiving CeONPs compared with the SCI group, but the expression of ERK1/ERK2 and phospho-ERK was lower compared with the SCI group. The expression levels of Tau and MAG were significantly increased in treated animals compared to the SCI group.Conclusion: The use of CeONPs in SCI could improve motor functional recovery, reduce pain and increase nerve cell regeneration.

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Synthesis of cerium oxide nanoparticles loaded on chitosan for enhanced auto-catalytic regenerative ability and biocompatibility for the spinal cord injury repair

Journal of Photochemistry and Photobiology B Biology ◽

10.1016/j.jphotobiol.2018.11.016 ◽

2019 ◽

Vol 191 ◽

pp. 83-87 ◽

Cited By ~ 12

Author(s):

Xiutong Fang ◽

Hongxing Song

Keyword(s):

Spinal Cord ◽

Spinal Cord Injury ◽

Cerium Oxide ◽

Cerium Oxide Nanoparticles ◽

Oxide Nanoparticles ◽

Injury Repair ◽

Cord Injury ◽

Regenerative Ability

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DEVELOPING NEW METHODS OF SPINAL CORD INJURY TREATMENT USING MAGNETIC NANOPARTICLES IN COMBINATION WITH ELECTROMAGNETIC FIELD

Coluna/Columna ◽

10.1590/s1808-185120171602172206 ◽

2017 ◽

Vol 16 (2) ◽

pp. 145-148

Author(s):

Sergey Kolesov ◽

Andrey Panteleyev ◽

Maxim Sazhnev ◽

Arkadiy Kazmin

Keyword(s):

Magnetic Field ◽

Spinal Cord ◽

Spinal Cord Injury ◽

Iron Oxide ◽

Evoked Potential ◽

Oxide Nanoparticles ◽

Magnetic Iron Oxide Nanoparticles ◽

Magnetic Iron Oxide ◽

Potential Amplitude ◽

Cord Injury

ABSTRACT Objective: To determine the amount of loss of function after spinal cord transection of varying extents, and whether magnetic iron oxide nanoparticles, in combination with an external magnetic field, improve the rate of subsequent functional recovery in rats. Methods: The animals were divided into groups with 50%, 80% and complete spinal cord transection. The animals of all three study groups were administered magnetic iron oxide nanoparticle suspension to the area of injury. The three control groups were not administered magnetic nanoparticles, but had corresponding transection levels. All animals were exposed to a magnetic field for 4 weeks. Loss of postoperative function and subsequent recovery were assessed using the BBB motor function scale and somatosensory evoked potential monitoring on the first day after surgery, and then weekly. Terminal histological analysis was also conducted in all the groups. Results: The animals in the control or complete transection groups did not demonstrate statistically significant improvement in either the BBB scores or evoked potential amplitude over the four-week period. In the group with 50% transection, however, a statistically significant increase in evoked potential amplitude and BBB scores was observed four weeks after surgery, with the highest increase during the second week of the study. In the group with 80% transection, only improvement in evoked potential amplitude was statistically significant, although less pronounced than in the 50% transection group. Conclusion: The use of magnetic iron oxide nanoparticles in combination with a magnetic field leads to higher rates of functional recovery after spinal cord injury in laboratory animals. The mechanism of this functional improvement needs further investigation.

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Novel Approach for Efficient Recovery for Spinal Cord Injury Repair via Biofabricated Nano-Cerium Oxide Loaded PCL With Resveratrol to Improve in Vitro Biocompatibility and Autorecovery Abilities

Dose-Response ◽

10.1177/1559325820933518 ◽

2020 ◽

Vol 18 (3) ◽

pp. 155932582093351

Author(s):

Liang Dong ◽

Xin Kang ◽

Qiang Ma ◽

Zhengwei Xu ◽

Honghui Sun ◽

...

Keyword(s):

Electron Microscopy ◽

Spinal Cord ◽

Spinal Cord Injury ◽

Cerium Oxide ◽

Synergetic Effect ◽

Catalytic Performance ◽

Functional Restoration ◽

Injury Repair ◽

Cord Injury

It is more difficult to develop the low-cost spinal cord injury repair materials with high stability and biocompatibility for the biomedical applications. Herein, for the first time, we demonstrated the functional restoration of an injured spinal cord by the nano CeO2 particles assembled onto poly (∊-caprolactone) (PCL)/resveratrol (RVL) were synthesized using the biocompatible ionic liquid. The as-prepared biocompatible nanomaterials were characterized and confirmed by using different instruments such as Fourier transform infra-red spectroscopy for functional groups identification, X-ray diffraction for crystalline nature, Scanning electron microscopy, transmission electron microscopy for morphological structure, Dynamic light scattering for size distribution of the nanoparticles and thermogravimetric analysis for thermal properties. The synergetic effect between the uniform distributions of nano-sized CeO2 particles onto the PCL polymer with RVL can remarkably enhance the catalytic performance. Biofabricated nano-cerium oxide loaded PCL with RVL revealed that treatment significantly preserved hydrogen peroxide and also good catalytic performance. This study presents a nano-sized cerium oxide particles loaded PCL with RVL biocompatible materials have been providing highly efficient regenerative activity and biocompatibility in spinal card regeneration.

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Novel design and combination strategy of minocycline and OECs-loaded CeO2 nanoparticles with SF for the treatment of spinal cord injury: In vitro and in vivo evaluations

Green Processing and Synthesis ◽

10.1515/gps-2021-0038 ◽

2021 ◽

Vol 10 (1) ◽

pp. 614-627

Author(s):

Shengyu Cui ◽

Xinhui Zhu ◽

Dawei Xu ◽

Wei Liu ◽

Hong Yi ◽

...

Keyword(s):

Spinal Cord ◽

Spinal Cord Injury ◽

Cerium Oxide ◽

Silk Fibroin ◽

Inflammatory Factors ◽

Sustained Drug Release ◽

Combination Strategy ◽

Cord Injury

Abstract Generally, several mechanisms influenced the secondary injury chutes following acute spinal cord injury (SCI). Though current SCI therapeutic approaches mostly target single elements in the injury chutes, they have been mostly ineffective in clinical trials. The aim of this study was to design and develop a novel cerium oxide/silk fibroin (CeO2/SF) hydrogel material loaded with minocycline (MCN) and transplantation of olfactory ensheathing cells (OEC) for SCI treatment. The prepared CeO2/SF hydrogel has an advantageous porous morphological structure and CeO2 NPs were greatly encapsulated on the surface, which was confirmed by microscopic observations. The results of in vitro analyses established favourable biocompatibility of 94.65% and 89.45%, sustained drug release rate of 89% and 58%, and significant reduction in pro-inflammatory factors for the treatments using cerium oxide loaded silk fibroin (CSF) and CeO2 NPs, respectively. Meanwhile, the administration of MCN@OEC greatly provides an efficient improvement in BBB score, decreased bladder weight, and histological improvement after SCI when compared to the control. Therefore, the combined MCN and OEC-loaded CSF hydrogel sample could be proved as a low cost, safe, and potential material for the treatment of SCI.

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