Journal
MATERIALS SCIENCE AND ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
Volume 102, Issue -, Pages 12-21Publisher
ELSEVIER
DOI: 10.1016/j.msec.2019.03.110
Keywords
Thermo-responsive hydrogel; Tissue adhesion; TOCN; Adhesion barrier
Categories
Funding
- Korea Forest Research Institute [FP0400-2016-01-500 2016]
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education [2015-R1A6A1A03032522]
- Soonchunhyang University research fund
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The objective of this study was to present an effective injectable adhesion barrier comprised of TEMPO-oxidized cellulose nanofiber (TOCN), methyl cellulose, carboxymethyl cellulose, and polyethylene glycol. Hydrogels with different concentrations (0.2, 0.5, 0.8, 1% w/v) of bio compatible TOCN were investigated to determine their abilities to prevent post-surgical peritoneal adhesion using a rat cecal wall abrasion model. Sol-gel transition at body temperature (37 degrees C) was optimized by adjusting concentration of sodium ions (Na+), with a gelation time of 45 +/- 7 s. These TOCN containing hydrogels showed non cytotoxicity to rat bone marrow mesenchymal stem cells (RBMSCs) and L929 fibroblast cells as cell models during in vitro assessment. Degradation studies revealed that, TOCN concentration in hydrogel was inversely proportional to hydrolytic degradation rate. From in vivo evaluations, TOCN 0.2 hydrogel significantly reduced peritoneal adhesion in rat (n = 8) compared to untreated controls based on gross observation, histological analysis, and expression analysis of marker proteins. By taking advantages of thermo gelling, high stability, non-invasive way of application and rapid recovery potential, TOCN containing bio compatible hydrogel could be used as a cost-effective barrier to efficiently inhibit post-surgical peritoneal adhesions.
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