Volume 112, Issue 9 pp. 1532-1547
RESEARCH ARTICLE

Study on chitosan/gelatin hydrogels containing ceria nanoparticles for promoting the healing of diabetic wound

Yonghui Wu

Yonghui Wu

School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, China

School of Biomedical Engineering and Medical Imaging, Army Medical University, Chongqing, China

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Qianqian Wu

Qianqian Wu

School of Biomedical Engineering and Medical Imaging, Army Medical University, Chongqing, China

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Xialian Fan

Xialian Fan

Department of Ophthalmology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China

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Lu Yang

Lu Yang

School of Biomedical Engineering and Medical Imaging, Army Medical University, Chongqing, China

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Ling Zou

Ling Zou

School of Biomedical Engineering and Medical Imaging, Army Medical University, Chongqing, China

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Qingshan Liu

Qingshan Liu

School of Biomedical Engineering and Medical Imaging, Army Medical University, Chongqing, China

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Guangyou Shi

Guangyou Shi

School of Biomedical Engineering and Medical Imaging, Army Medical University, Chongqing, China

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Xiaochao Yang

Corresponding Author

Xiaochao Yang

School of Biomedical Engineering and Medical Imaging, Army Medical University, Chongqing, China

Correspondence

Keyong Tang, School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450004, China.

Email: [email protected]

Xiaochao Yang, School of Biomedical Engineering and Medical Imaging, Army Medical University, Chongqing 400038, China.

Email: [email protected]

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Keyong Tang

Corresponding Author

Keyong Tang

School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, China

Correspondence

Keyong Tang, School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450004, China.

Email: [email protected]

Xiaochao Yang, School of Biomedical Engineering and Medical Imaging, Army Medical University, Chongqing 400038, China.

Email: [email protected]

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First published: 19 March 2024
Citations: 4

Yonghui Wu and Qianqian Wu contributed equally to this study.

Abstract

Chronic inflammation at diabetic wound sites results in the uncontrolled accumulation of pro-inflammatory factors and reactive oxygen species (ROS), which impedes cell proliferation and delays wound healing. To promote the healing of diabetic wounds, chitosan/gelatin hydrogels containing ceria nanoparticles (CNPs) of various sizes were created in the current study. CNPs' efficacy in removing O 2 , •OH, and H2O2 was demonstrated, and the scavenging ability of CNPs of varying sizes was compared. The in vitro experiments demonstrated that hydrogels containing CNPs could effectively protect cells from ROS-induced damage and facilitate mouse fibroblast migration. Furthermore, during the treatment of diabetic wounds in vivo, hydrogels containing CNPs exhibited anti-inflammatory activity and could reduce the expression of the pro-inflammatory factors TNF-α (above 30%), IL-6 (above 90%), and IL-1β (above 80%), and effectively promote wound closure (above 80%) by inducing re-epithelialization, collagen deposition, and angiogenesis. In addition, the biological properties and therapeutic effects of hydrogels containing CNPs of various sizes were compared and discussed. The finding revealed that hydrogels with 4 nm CNPs exhibited more significant biological properties and had implications for diabetic wound treatment.

DATA AVAILABILITY STATEMENT

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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