PMID- 30896336 OWN - NLM STAT- MEDLINE DCOM- 20200323 LR - 20200323 IS - 1568-5624 (Electronic) IS - 0920-5063 (Linking) VI - 30 IP - 8 DP - 2019 Jun TI - Sodium carboxymethyl cellulose hydrogels containing reduced graphene oxide (rGO) as a functional antibiofilm wound dressing. PG - 629-645 LID - 10.1080/09205063.2019.1595892 [doi] AB - Biofilms comprise bacteria attached to wound surfaces and are major contributors to non-healing wounds. It was found that the increased resistance of biofilms to antibiotics allows wound infections to persist chronically in spite of antibiotic therapy. In this study, the reduced form of graphene oxide (rGO) was explored as plausible antibiofilm agents. The rGO was synthesized via reducing the functional groups of GO. Then, rGO were characterized using zetasizer, X-ray photoelectron spectroscopy, UV-Vis spectroscopy and FESEM. The rGO were then formulated into sodium carboxymethyl cellulose (NaCMC) hydrogels to form rGO hydrogel and tested for antibiofilm activities in vitro using XTT test, and in vivo biofilm formation assay using nematodes C. elegans. Reduced GO hydrogel was successfully formed by reducing the functional groups of GO, and a reduction of up to 95% of functional groups was confirmed with X-ray photoelectron spectroscopy analysis. XTT tests confirmed that rGO hydrogels reduced biofilm formation by S. aureus (81-84%) and P. aeruginosa (50-62%). Fluorescence intensity also confirmed that rGO hydrogel can inhibit biofilm bacteria in C. elegans experiments. This study implied that rGO hydrogel is an effective antibiofilm agent for infected wounds. FAU - Ali, Nor Hazwan AU - Ali NH AD - a Centre for Drug Delivery Research, Fakulti Farmasi , Universiti Kebangsaan Malaysia , Kuala Lumpur , Malaysia. FAU - Amin, Mohd Cairul Iqbal Mohd AU - Amin MCIM AD - a Centre for Drug Delivery Research, Fakulti Farmasi , Universiti Kebangsaan Malaysia , Kuala Lumpur , Malaysia. FAU - Ng, Shiow-Fern AU - Ng SF AD - a Centre for Drug Delivery Research, Fakulti Farmasi , Universiti Kebangsaan Malaysia , Kuala Lumpur , Malaysia. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20190404 PL - England TA - J Biomater Sci Polym Ed JT - Journal of biomaterials science. Polymer edition JID - 9007393 RN - 0 (Anti-Bacterial Agents) RN - 0 (Hydrogels) RN - 0 (graphene oxide) RN - 7782-42-5 (Graphite) RN - K679OBS311 (Carboxymethylcellulose Sodium) SB - IM MH - Animals MH - Anti-Bacterial Agents/*chemistry/pharmacology MH - Bandages MH - Biofilms MH - Caenorhabditis elegans/drug effects MH - Carboxymethylcellulose Sodium/*chemistry/pharmacology MH - Cell Line MH - Cell Survival MH - Drug Compounding/methods MH - Graphite/*chemistry MH - Humans MH - Hydrogels/*chemistry/pharmacology MH - Oxidation-Reduction MH - Pseudomonas aeruginosa/drug effects MH - Staphylococcus aureus/drug effects MH - Wound Healing/drug effects OTO - NOTNLM OT - Reduced graphene oxide OT - antibiofilm OT - sodium carboxymethyl cellulose OT - wound dressing EDAT- 2019/03/22 06:00 MHDA- 2020/03/24 06:00 CRDT- 2019/03/22 06:00 PHST- 2019/03/22 06:00 [pubmed] PHST- 2020/03/24 06:00 [medline] PHST- 2019/03/22 06:00 [entrez] AID - 10.1080/09205063.2019.1595892 [doi] PST - ppublish SO - J Biomater Sci Polym Ed. 2019 Jun;30(8):629-645. doi: 10.1080/09205063.2019.1595892. Epub 2019 Apr 4.