PMID- 37080405 OWN - NLM STAT- MEDLINE DCOM- 20230612 LR - 20230612 IS - 1879-0003 (Electronic) IS - 0141-8130 (Linking) VI - 241 DP - 2023 Jun 30 TI - Carboxymethylcellulose hydrogels crosslinked with keratin nanoparticles for efficient prednisolone delivery. PG - 124497 LID - S0141-8130(23)01391-0 [pii] LID - 10.1016/j.ijbiomac.2023.124497 [doi] AB - Carboxymethylcellulose (CMC) and keratin nanoparticle (KNP) hydrogels were obtained, characterized, and applied as drug delivery systems (DDSs) for the first time. Lyophilized CMC/KNP mixtures containing 10, 25, and 50 wt% of KNPs were kept at 170 degrees C for 90 min to crosslink CMC chains through a solid-state reaction with the KNPs. The hydrogels were characterized by infrared spectroscopy, thermal analyses, X-ray diffraction, mechanical measurements, and scanning electron microscopy. The infrared spectra indicated the formation of ester and amide linkages between crosslinked CMC and KNPs. The elastic modulus of the hydrogel containing 10 wt% KNPs was 2-fold higher than that of the hydrogel containing 50 wt% KNPs. The mechanical properties influenced the hydrogel stability and water uptake. The anti-inflammatory prednisolone (PRED) drug was incorporated into the hydrogels, and the release mechanism was investigated. The hydrogels supported PRED release by drug desorption for approximately 360 h. A sustained release mechanism was achieved. The CMC/KNP and CMC/KNP/PRED hydrogels were cytocompatible toward mammalian cells. The CMC/KNP/PRED set imparted the highest cell viability after 7 days of incubation. This study showed a straightforward procedure to create DDSs (chemically crosslinked) based on polysaccharides and proteins for efficient PRED delivery. CI - Copyright (c) 2023 Elsevier B.V. All rights reserved. FAU - Silva, Otavio A AU - Silva OA AD - Group of Polymers and Composite Materials, Department of Chemistry, State University of Maringa (UEM), Maringa, PR, Brazil. FAU - Pella, Michelly G AU - Pella MG AD - Group of Polymers and Composite Materials, Department of Chemistry, State University of Maringa (UEM), Maringa, PR, Brazil. FAU - Sabino, Roberta M AU - Sabino RM AD - School of Advanced Materials Discovery, Colorado State University (CSU), Fort Collins, CO, USA; Institute for Medical Engineering and Science, Massachusetts Institute of Technology (MIT), Cambridge, MA, USA. FAU - Popat, Ketul C AU - Popat KC AD - School of Advanced Materials Discovery, Colorado State University (CSU), Fort Collins, CO, USA; Department of Mechanical Engineering, Colorado State University (CSU), Fort Collins, CO, USA. FAU - Kipper, Matt J AU - Kipper MJ AD - School of Advanced Materials Discovery, Colorado State University (CSU), Fort Collins, CO, USA; Department of Chemical and Biological Engineering, Colorado State University (CSU), Fort Collins, CO, USA. FAU - Rubira, Adley F AU - Rubira AF AD - Group of Polymers and Composite Materials, Department of Chemistry, State University of Maringa (UEM), Maringa, PR, Brazil. FAU - Follmann, Heveline D M AU - Follmann HDM AD - Group of Polymers and Composite Materials, Department of Chemistry, State University of Maringa (UEM), Maringa, PR, Brazil. FAU - Silva, Rafael AU - Silva R AD - Group of Polymers and Composite Materials, Department of Chemistry, State University of Maringa (UEM), Maringa, PR, Brazil. FAU - Martins, Alessandro F AU - Martins AF AD - Group of Polymers and Composite Materials, Department of Chemistry, State University of Maringa (UEM), Maringa, PR, Brazil; Laboratory of Materials, Macromolecules, and Composites, Federal University of Technology-Parana (UTFPR), Apucarana, PR, Brazil; Department of Chemical and Biological Engineering, Colorado State University (CSU), Fort Collins, CO, USA. Electronic address: afmartins@utfpr.edu.br. LA - eng PT - Journal Article DEP - 20230418 PL - Netherlands TA - Int J Biol Macromol JT - International journal of biological macromolecules JID - 7909578 RN - 0 (Hydrogels) RN - 68238-35-7 (Keratins) RN - K679OBS311 (Carboxymethylcellulose Sodium) RN - 9PHQ9Y1OLM (Prednisolone) RN - 0 (Anti-Inflammatory Agents) SB - IM MH - Animals MH - *Hydrogels/chemistry MH - Keratins MH - Carboxymethylcellulose Sodium/chemistry MH - Prednisolone/pharmacology MH - Anti-Inflammatory Agents MH - *Nanoparticles MH - Mammals OTO - NOTNLM OT - Anti-inflammatory OT - Polysaccharides OT - Release COIS- Declaration of competing interest The authors have no competing financial interests to declare or personal relationships that can influence the work reported in this paper. EDAT- 2023/04/21 00:42 MHDA- 2023/06/12 06:42 CRDT- 2023/04/20 19:26 PHST- 2023/02/07 00:00 [received] PHST- 2023/04/04 00:00 [revised] PHST- 2023/04/13 00:00 [accepted] PHST- 2023/06/12 06:42 [medline] PHST- 2023/04/21 00:42 [pubmed] PHST- 2023/04/20 19:26 [entrez] AID - S0141-8130(23)01391-0 [pii] AID - 10.1016/j.ijbiomac.2023.124497 [doi] PST - ppublish SO - Int J Biol Macromol. 2023 Jun 30;241:124497. doi: 10.1016/j.ijbiomac.2023.124497. Epub 2023 Apr 18.