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Sriyai M, Tasati J, Molloy R, Meepowpan P, Somsunan R, Worajittiphon P, Daranarong D, Meerak J, Punyodom W. Development of an Antimicrobial-Coated Absorbable Monofilament Suture from a Medical-Grade Poly(l-lactide- co-ε-caprolactone) Copolymer. ACS Omega 2021; 6:28788-28803. [PMID: 34746572 PMCID: PMC8567407 DOI: 10.1021/acsomega.1c03569] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Accepted: 10/07/2021] [Indexed: 06/12/2023]
Abstract
In this study, a medical-grade poly(l-lactide-co-ε-caprolactone) (PLC) copolymer with a monomer ratio of l-lactide (L) to ε-caprolactone (C) of 70:30 mol % for use as an absorbable surgical suture was synthesized via ring-opening polymerization (ROP) using a novel soluble liquid tin(II) n-butoxide (Sn(OnC4H9)2) as an initiator. In fiber fabrication, the process included copolymer melt extrusion with a minimal draw followed by sequential controlled hot-drawing and fixed-annealing steps to obtain oriented semicrystalline fibers with improved mechanical strength. For healing enhancement, the fiber was dip-coated with "levofloxacin" by adding the drug into a solution mixture of acetone, poly(ε-caprolactone) (PCL), and calcium stearate (CaSt) in the ratio of acetone/PCL/CaSt = 100:1% w/v:0.1% w/v. The tensile strength of the coated fiber was found to be increased to ∼400 MPa, which is comparable with that of commercial polydioxanone (PDS II) of a similar size. Finally, the efficiency of the drug-coated fiber regarding its controlled drug release and antimicrobial activity was investigated, and the results showed that the coated fiber was able to release the drug continuously for as long as 30 days. For fiber antimicrobial activity, it was found that a concentration of 1 mg/mL was sufficient to inhibit the growth of Staphylococcus aureus (MRSA), Escherichia coli O157:H7, and Pseudomonas aeruginosa, giving a clear inhibition zone range of 20-24 mm for 90 days. Cytotoxicity testing of the drug-coated fibers showed a %viability of more than 70%, indicating that they were nontoxic.
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Affiliation(s)
- Montira Sriyai
- Bioplastics
Production Laboratory for Medical Applications, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
- Center
of Excellence in Materials Science and Technology, Chiang Mai University, Chiang
Mai 50200, Thailand
| | - Jagkrit Tasati
- Department
of Chemistry, Faculty of Science, Chiang
Mai University, Chiang Mai 50200, Thailand
| | - Robert Molloy
- Center
of Excellence in Materials Science and Technology, Chiang Mai University, Chiang
Mai 50200, Thailand
| | - Puttinan Meepowpan
- Department
of Chemistry, Faculty of Science, Chiang
Mai University, Chiang Mai 50200, Thailand
- Center
of Excellence in Materials Science and Technology, Chiang Mai University, Chiang
Mai 50200, Thailand
| | - Runglawan Somsunan
- Department
of Chemistry, Faculty of Science, Chiang
Mai University, Chiang Mai 50200, Thailand
- Center
of Excellence in Materials Science and Technology, Chiang Mai University, Chiang
Mai 50200, Thailand
| | - Patnarin Worajittiphon
- Department
of Chemistry, Faculty of Science, Chiang
Mai University, Chiang Mai 50200, Thailand
- Center
of Excellence in Materials Science and Technology, Chiang Mai University, Chiang
Mai 50200, Thailand
| | - Donraporn Daranarong
- Center
of Excellence in Materials Science and Technology, Chiang Mai University, Chiang
Mai 50200, Thailand
- Science
and Technology Research Institute, Chiang
Mai University, Chiang Mai 50200, Thailand
| | - Jomkwan Meerak
- Center
of Excellence in Materials Science and Technology, Chiang Mai University, Chiang
Mai 50200, Thailand
- Department
of Biology, Faculty of Science, Chiang Mai
University, Chiang Mai 50200, Thailand
| | - Winita Punyodom
- Department
of Chemistry, Faculty of Science, Chiang
Mai University, Chiang Mai 50200, Thailand
- Center
of Excellence in Materials Science and Technology, Chiang Mai University, Chiang
Mai 50200, Thailand
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Suwannarach N, Kumla J, Nishizaki Y, Sugimoto N, Meerak J, Matsui K, Lumyong S. Optimization and characterization of red pigment production from an endophytic fungus, Nigrospora aurantiaca CMU-ZY2045, and its potential source of natural dye for use in textile dyeing. Appl Microbiol Biotechnol 2019; 103:6973-6987. [DOI: 10.1007/s00253-019-09926-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Revised: 05/14/2019] [Accepted: 05/16/2019] [Indexed: 10/26/2022]
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