Non-oxidized cellulose nanofibers as a topical hemostat: In vitro thromboelastometry studies of structure vs function
| Autor: | Ailene Fitzgerald, Elmira Mohamed, David R. Nisbet, Philip Crispin, Lucy A. Coupland, Takuya Tsuzuki |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Hemostat
Polymers and Plastics Organic Chemistry Oxidized cellulose Nanofibers Hemorrhage Hemostatics Thrombelastography chemistry.chemical_compound Thromboelastometry chemistry Clotting time Specific surface area Nanofiber Spectroscopy Fourier Transform Infrared Materials Chemistry Humans Platelet Cellulose Oxidized Cellulose Biomedical engineering |
| Zdroj: | Carbohydrate polymers. 265 |
| ISSN: | 1879-1344 |
| Popis: | Hemorrhage remains a significant cause of morbidity and mortality following trauma and during complex surgeries. A variety of nanomaterials, including oxidized cellulose nanofibers (OCNFs), have been studied to overcome the disadvantages of current commercial topical hemostats. However, the relationship between nano-structural characteristics and hemostatic efficacy of non-oxidized cellulose nanofibers (CNFs) has not been elucidated. Herein, we present the first report of the correlation between structure and hemostatic performance of CNFs. In vitro thromboelastometry studies on CNFs, synthesized by ball-milling, showed that there is an optimum balance point between the aspect ratio (AR) and specific surface area (SSA) of nanofibers in terms of their maximum contribution to platelet function and plasma coagulation. The optimized CNFs with high SSA (17 m2/g) and a high AR (166) shortened normal whole blood clotting time by 68 %, outperforming cellulose-based hemostats. Additionally, CNFs reduced clotting time in platelet-deficient blood (by 80 %) and heparinized blood (by 54 %). |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect