Hyaluronic acid chloramide-Synthesis, chemical structure, stability and analysis of antimicrobials.
Carbohydr Polym
; 250: 116928, 2020 Dec 15.
Article
en En
| MEDLINE
| ID: mdl-33049842
ABSTRACT
Electron-deficient chlorine covalently immobilised on an amido group of hyaluronic acid (HA) can be potentially exceptional for applications requiring biodegradable and biocompatible polymers with enhanced antibacterial or antiviral activity. This expectation is supported by the assumption that a small amount of HA chloramide (HACl) is formed in the extracellular matrix under inflammatory conditions by a reaction of endogenous HA with hypochlorous acid (HClO) generated by a myeloperoxidase/H2O2/Cl- system. HACl synthesis optimisation showed significant limitations of HClO as an oxidative agent where only lower degrees of substitution (DS) was achieved. Commercially available oxidative agents based on chlorinated isocyanuric acid were successfully tested, producing the HA chain with almost entirely chlorinated amidic groups. The structure of the final HACl was thoroughly studied using advanced 2-dimensional NMR methodologies and LC/MS. Stability of HACl at different temperatures was monitored over 12 months. Preliminary antimicrobial and antiviral tests demonstrated the potential of HACl for applications in biomedicine.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Antivirales
/
Cloraminas
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Ácido Hipocloroso
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Ácido Hialurónico
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Antibacterianos
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Antifúngicos
Idioma:
En
Revista:
Carbohydr Polym
Año:
2020
Tipo del documento:
Article