PMID- 32218368 OWN - NLM STAT- MEDLINE DCOM- 20201221 LR - 20201221 IS - 1660-3397 (Electronic) IS - 1660-3397 (Linking) VI - 18 IP - 4 DP - 2020 Mar 25 TI - Comprehensive Assessment of Nile Tilapia Skin (Oreochromis niloticus) Collagen Hydrogels for Wound Dressings. LID - 10.3390/md18040178 [doi] LID - 178 AB - Collagen plays an important role in the formation of extracellular matrix (ECM) and development/migration of cells and tissues. Here we report the preparation of collagen and collagen hydrogel from the skin of tilapia and an evaluation of their potential as a wound dressing for the treatment of refractory wounds. The acid-soluble collagen (ASC) and pepsin-soluble collagen (PSC) were extracted and characterized using sodium dodecyl sulphate-polyacrylamide gel electrophoresis (SDS-PAGE), differential scanning calorimetry (DSC), circular dichroism (CD) and Fourier transform infrared spectroscopy (FTIR) analysis. Both ASC and PSC belong to type I collagen and have a complete triple helix structure, but PSC shows lower molecular weight and thermal stability, and has the inherent low antigenicity. Therefore, PSC was selected to prepare biomedical hydrogels using its self-aggregating properties. Rheological characterization showed that the mechanical strength of the hydrogels increased as the PSC content increased. Scanning electron microscope (SEM) analysis indicated that hydrogels could form a regular network structure at a suitable PSC content. Cytotoxicity experiments confirmed that hydrogels with different PSC content showed no significant toxicity to fibroblasts. Skin repair experiments and pathological analysis showed that the collagen hydrogels wound dressing could significantly accelerate the healing of deep second-degree burn wounds and the generation of new skin appendages, which can be used for treatment of various refractory wounds. FAU - Ge, Baosheng AU - Ge B AD - State Key Laboratory of Heavy Oil Processing and Center for Bioengineering and Biotechnology, China University of Petroleum (East China), Qingdao 266580, China. FAU - Wang, Haonan AU - Wang H AD - State Key Laboratory of Heavy Oil Processing and Center for Bioengineering and Biotechnology, China University of Petroleum (East China), Qingdao 266580, China. FAU - Li, Jie AU - Li J AD - State Key Laboratory of Heavy Oil Processing and Center for Bioengineering and Biotechnology, China University of Petroleum (East China), Qingdao 266580, China. AD - Yantai Institute of Coastal Zone, Chinese Academy of Sciences, Yantai, 264003, China. FAU - Liu, Hengheng AU - Liu H AD - State Key Laboratory of Heavy Oil Processing and Center for Bioengineering and Biotechnology, China University of Petroleum (East China), Qingdao 266580, China. FAU - Yin, Yonghao AU - Yin Y AD - State Key Laboratory of Heavy Oil Processing and Center for Bioengineering and Biotechnology, China University of Petroleum (East China), Qingdao 266580, China. FAU - Zhang, Naili AU - Zhang N AD - Department of Human Anatomy, School of Basic Medical Science, Binzhou Medical University, 346 Guanhai Road, Laishan, Yantai, 264003, China. FAU - Qin, Song AU - Qin S AD - Yantai Institute of Coastal Zone, Chinese Academy of Sciences, Yantai, 264003, China. LA - eng GR - 21673294/National Natural Science Foundation of China/ GR - ZR2019ZD17/Natural Science Foundation of Shandong Province/ GR - J18KA258/Shandong Province Higher Educational Science and Technology Program/ GR - BS2015SW021/Natural Science Foundation of Shandong Province/ PT - Journal Article DEP - 20200325 PL - Switzerland TA - Mar Drugs JT - Marine drugs JID - 101213729 RN - 0 (Collagen Type I) RN - 0 (Fish Proteins) RN - 0 (Hydrogels) SB - IM MH - Animals MH - *Bandages MH - Burns/*therapy MH - *Cichlids MH - Collagen Type I/isolation & purification/*pharmacology/ultrastructure MH - Disease Models, Animal MH - Female MH - Fish Proteins/isolation & purification/*pharmacology/ultrastructure MH - Humans MH - Hydrogels/pharmacology MH - Male MH - Microscopy, Electron, Scanning MH - Rats MH - Skin/chemistry/injuries MH - Wound Healing/drug effects PMC - PMC7230254 OTO - NOTNLM OT - characterization OT - collagen hydrogel OT - fish skin OT - wound dressing COIS- The authors declare no conflict of interest. EDAT- 2020/03/29 06:00 MHDA- 2020/12/22 06:00 PMCR- 2020/04/01 CRDT- 2020/03/29 06:00 PHST- 2020/02/24 00:00 [received] PHST- 2020/03/17 00:00 [revised] PHST- 2020/03/23 00:00 [accepted] PHST- 2020/03/29 06:00 [entrez] PHST- 2020/03/29 06:00 [pubmed] PHST- 2020/12/22 06:00 [medline] PHST- 2020/04/01 00:00 [pmc-release] AID - md18040178 [pii] AID - marinedrugs-18-00178 [pii] AID - 10.3390/md18040178 [doi] PST - epublish SO - Mar Drugs. 2020 Mar 25;18(4):178. doi: 10.3390/md18040178.