Enzyme-functionalized hydrogel film for extracorporeal uric acid reduction
Issued Date
2024-02-01
Resource Type
ISSN
15524973
eISSN
15524981
Scopus ID
2-s2.0-85183701573
Journal Title
Journal of Biomedical Materials Research - Part B Applied Biomaterials
Volume
112
Issue
2
Rights Holder(s)
SCOPUS
Bibliographic Citation
Journal of Biomedical Materials Research - Part B Applied Biomaterials Vol.112 No.2 (2024)
Suggested Citation
Pantakitcharoenkul J., Touma J., Jovanovic G., Coblyn M. Enzyme-functionalized hydrogel film for extracorporeal uric acid reduction. Journal of Biomedical Materials Research - Part B Applied Biomaterials Vol.112 No.2 (2024). doi:10.1002/jbm.b.35375 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/97127
Title
Enzyme-functionalized hydrogel film for extracorporeal uric acid reduction
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Abstract
Enzyme replacement therapy for hyperuricemia treatment has been proven effective for critical state hyperuricemia patients. Still, direct administration of recombinant uricase can induce several fatal side effects. To circumvent this drawback, hydrogel protein carriers can be used in platforms for extracorporeal treatment such as microscale-based devices. In this work, calcium alginate and poly-(vinyl alcohol) hydrogel films were studied for their urate oxidase immobilization and uric acid reduction, which could be implemented in microscale-based extracorporeal devices. A mathematical model was developed in conjunction with uric acid reduction experiments to evaluate the influence of mass transfer and reaction parameters in the Michaelis–Menten kinetic expression. Alginate hydrogels prepared with crosslinker 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide and N-(hydroxysuccinimide) offered superior diffusivity of uric acid in the gel matrix at the maximum value of (Formula presented.) 1.98 × 10−11 m2/s compared with alginate prepared solely from ionic crosslinking with (Formula presented.) 5.31 × 10−12 m2/s at the same alginate concentration. The maximum value of νmax was experimentally determined at 7.78 × 10−5 mol/(m3s). A 3% sodium alginate hydrogel with crosslinkers yielded the highest reduction of uric acid at 92.70%. The mathematical model demonstrated an excellent prediction of uric acid conversion suggesting potential use of the model for formulation and maximizing the therapeutic performance of functionalized hydrogels.