Development of polydopamine functionalized porous starch for bleeding control with the assistance of NIR light

Abstract

Efficient hemorrhage control of severe wound injuries is an urgent medical need, deserving agents with promising blood coagulation and biocompatible characteristics. Current work developed polydopamine (PDA) functionalized porous starch powder (PS-PDA) for emergency bleeding treatment. The micro-morphology and elements, chemical groups, and porosity of PS-PDA were systematically characterized. Its comparison with porous starch (PS) revealed the promising potential of this composite in medical practice. On one hand, PS-PDA showed superior surface area and biomineralization affinity over PS, along with comparable hemo/cyto-compatibility. On the other hand, the photothermal effect of PDA under near Infrared (NIR) light paved the possibility to accelerate blood coagulation in situ. In vivo studies indicated PS-PDA can significantly reduce blood loss and improvement of hemostasis efficiency accompanied by NIR light exposure. These results suggest that this newly developed PS-PDA powder can serve as a promising hemostatic material for bleeding wound control.

Highlights

1. Polydopamine functionalized porous starch (PS-PDA) was developed for bleeding control

2. PS-PDA showed superior surface area and biomineralization affinity over PS

3. With assistance of NIR irradiation, PS-PDA can accelerate blood coagulation

4. PS-PDA showed therapeutic potential for both soft and hard tissue bleeding wound

GRAPHICAL ABSTRACT

Keywords:

• Hemostasis
• biomineralization
• photothermal effect
• starch
• polydopamine

Data availability

Data will be made available on request.

Data availability statement

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

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work was supported by National Natural Science Foundation of China (Nos. 51771069, 82025025), Natural Science Foundation of Hebei Province of China (Nos. H2022202007, C2021202003), Natural Science Foundation of Tianjin of China (No. 21JCYBJC01030), the Full-time Talents Program of Hebei Province of China (No. 2020HBQZYC012), the Academician Expert Workstation of Yunnan Province of China (No. 202205AF150025) and No. 2021-NCRC-CXJJ-ZH-17 of Clinical Application-oriented Medical Innovation Foundation from National Clinical Research Center for Orthopedics, Sports Medicine & Rehabilitation Foundation.