Abstract
Spinal cord injury includes inflammation and apoptosis of neurons, which is difficult to cure by systemic drug administration. Administration of natural active compounds (resveratrol and also Puerarin) by advance drug delivery technology improves the patient’s conditions. Oil-in-water emulsion method was utilized to prepare resveratrol as well as puerarin loaded PLGA nanoparticles. The nanoparticles were subjected to mean zeta potential, mean particle size, encapsulation efficiency as well as in vitro drug release studies. The biochemical parameters i.e. malondialdehyde (MDA), reduced glutathione (GSH), superoxide dismutase (SOD), advanced oxidation products (AOPP), catalase (CAT) and nitrite/nitrate levels were tested for the loaded nanoparticles. Reperfusion injury induced rats treated with 10 mg/kg resveratrol and puerarin loaded nanoparticles protects spine from ischemia injury and supports biological parameters. The mean particle size varies from 238 nm to 274 nm and also particle size distribution was mono-dispersed (0.239 to 0.318). Zeta potential value of nanoparticles was observed to be −12.6 ± 2.1 mV. Optimized nanoparticles reveals 72% -79% of drug release over 36 h by diffusion mechanism. Significantly, lowers the levels of plasma nitrite/nitrate level as well as phosphorylation of p38MAPK pathways in reperfusion injury induced rats. The resveratrol and puerarin loaded nanoparticles decreases free radicals produced by reperfusion injury induced rats, as well as decrease of oxidative stress because of IRI. Resveratrol and puerarin loaded nanoparticles decreases GSH, SOD and CAT antioxidant level, which helps in overall health improvement of patients.
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Qimin Song is extremely thankful to Department of Neurosurgery, Linyi central hospital, China for providing desired facility to carry out the research activity and other relevant supports.
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This study was supported by funds from the Health Department of Shandong Province of China (grant nos. 2011QW008 and 2015WS0375).
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WC and ZZ are associated in planning the work The experiments were carried out by WC, SZ whereas LZ and QS was also involved in data handling and processing. All the authors contributed equally in preparing the manuscript. All authors read and approved the final manuscript.
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The animal experiment study protocol was approved by the institute’s committee on animal research, Linyi central hospital, Shandong province, China. The legal and ethical approval was obtained prior to initiation of the research work on animals, and the experiments were performed in accordance with the animal ethical committee guidelines and regulations of Republic of China.
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Chen, W., Zhao, Z., Zhao, S. et al. Resveratrol and Puerarin loaded polymeric nanoparticles to enhance the chemotherapeutic efficacy in spinal cord injury. Biomed Microdevices 22, 69 (2020). https://doi.org/10.1007/s10544-020-00521-4
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DOI: https://doi.org/10.1007/s10544-020-00521-4