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Biological Safety Evaluation of KiOmedine® CM-chitosan, an Innovative Non-animal Carboxymethyl-Chitosan Biomaterial Intended for Injectable Biomedical Applications
Journal of Biomaterials
Volume 4, Issue 2, December 2020, Pages: 39-50
Received: Sep. 7, 2020; Accepted: Sep. 19, 2020; Published: Sep. 25, 2020
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Pierre Douette, Kiomed Pharma, Herstal, Belgium
Mickael Chausson, Kiomed Pharma, Herstal, Belgium
Emilie Theatre, Kiomed Pharma, Herstal, Belgium
Catherine Philippart, Kiomed Pharma, Herstal, Belgium
Sandrine Gautier, Kiomed Pharma, Herstal, Belgium
Jacques Bentin, Department of rheumatology, Centre Hospitalier Universitaire Brugmann, Brussels, Belgium
Laurence Hermitte, Kiomed Pharma, Herstal, Belgium
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When designing innovative biomaterials, biocompatibility is regarded as a prerequisite for safe clinical use in humans. In this study, the biological safety of KiOmedine® CM-chitosan, which is a non-animal carboxymethyl chitosan biomaterial, was evaluated using a large panel of both in vitro and in vivo biocompatibility tests in accordance with the ISO 10993 series. KiOmedine® CM-chitosan was non-cytotoxic and non-genotoxic in vitro. The biomaterial was neither found to be haemolytic nor was it able to potentiate the activation of the central complement component C5a or the inflammatory mediators IL-1β and IL-8 in the presence of human whole blood. Furthermore, no evidence of any significant irritation, sensitization, pyrogenicity, and organ toxicity was detected in specific animal studies conducted with KiOmedine® CM-chitosan, and only minimal local tissue effects were observed after the intra-articular or intra-dermal injection of KiOmedine® CM-chitosan in the rabbit model. KiOmedine® CM-chitosan had minimal potential to induce immunotoxic reactions in the mouse air pouch model. Its biodegradation process was appropriately characterized at the histological level. In summary, our study represents an unprecedented body of work supporting the biological safety evaluation of KiOmedine® CM-chitosan, allowing its use in injectable medical devices.
Carboxymethyl Chitosan Biomaterial, Biocompatibility, Toxicology
To cite this article
Pierre Douette, Mickael Chausson, Emilie Theatre, Catherine Philippart, Sandrine Gautier, Jacques Bentin, Laurence Hermitte, Biological Safety Evaluation of KiOmedine® CM-chitosan, an Innovative Non-animal Carboxymethyl-Chitosan Biomaterial Intended for Injectable Biomedical Applications, Journal of Biomaterials. Vol. 4, No. 2, 2020, pp. 39-50. doi: 10.11648/j.jb.20200402.12
Copyright © 2020 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License ( which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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