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Core–Shell Structured Antimicrobial Nanofiber Dressings Containing Herbal Extract and Antibiotics Combination for the Prevention of Biofilms and Promotion of Cutaneous Wound Healing
Abstract
Burn wounds are susceptible to microbial invasion from both resident and exogenous bacteria, which becomes a critical public health issue and causes substantial economic burden. There is a perceived demand to produce new antimicrobial wound dressings that hinder bacterial colonization while accelerating the healing process and hence would provide an improved standard of care for patients. Since ancient times, herbal extracts from medicinally important plants have extensively been used for treating burn injuries. This work reports the utility of electrospun nanofibers containing plant extracts and antibiotics combination as a multifunctional scaffold for treating second-degree burns. First, we determined the various components of plant extracts from Gymnema sylvestre by two different processing methods and their synergism with minocycline antibiotics. Then, we prepared core–shell nanofibrous dressings with poly-ε-caprolactone/gelatin laden with minocycline hydrochloride as a shell and gelatin infused with G. sylvestre extracts (ultrasound-assisted extracts and cold macerated extracts) as the core using coaxial electrospinning. The electrospun nanofibers displayed a smooth, continuous, and bead-free morphology with adequate wettability. The presence of extract components in the core–shell nanofibers resulted in enhanced mechanical properties when compared to pristine mats. The core–shell structures resulted in sustained release of the bioactive components when compared to nanofiber blends. Core–shell nanofiber mats containing plant extracts and antibiotic combinations displayed potent antimicrobial and antibiofilm properties while promoting the spread and proliferation of skin cells when compared to pristine mats. In a porcine model of cutaneous second-degree burns, we showed that wounds treated with the antimicrobial dressing improved re-epithelialization and collagen organization in comparison to untreated wounds.
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Metadata
- Authors
- Ramalingam, R., Dhand, C., Mayandi, V., Leung, C. M., Ezhilarasu, H., Karuppannan, S. K., Prasannan, P., Ong, S. T., Sunderasan, N., Kaliappan, I., Kamruddin, M., Barathi, V. A., Verma, N. K., Ramakrishna, S., Lakshminarayanan, R., & Arunachalam, K. D.
- Affiliations
- SRM Institute of Science and Technology (IN)
- Advanced Materials and Processes Research Institute (IN)
- Nanyang Technological University (SG)
- National University of Singapore (SG)
- Department of Pharmaceutical Chemistry, SRM College of Pharmacy, SRM Institute of Science and Technology, Kattankulathur, Chengalpattu (Dt), Tamil Nadu 603203, India
- Indira Gandhi Centre for Atomic Research (IN)
- Corresponding author
- Ramakrishna, Seeram
- Lakshminarayanan, Rajamani
- Arunachalam, Kantha Deivi
- ORCID
- Venue
- ACS Applied Materials & Interfaces
- Publisher
- American Chemical Society (ACS)
- Published
- 2021-05-24
- Volume
- 13
- Issue
- 21
- Pages
- 24356-24369
- ISSN
- 1944-8244 (ISSN-L)
- 1944-8252
- OpenAlex
- W3164766431
- Semantic Scholar
- 589388be7e39f8639e1586ed09b433299869bbb7
- Cited by
- 115
- References
- 41
- Citations by year
- 2026: 12 · 2025: 21 · 2024: 23 · 2023: 24 · 2022: 28 · 2021: 7
- FWCI
- 4.88
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- Locations
- ACS Applied Materials & Interfaces (publishedVersion)
- PubMed (publishedVersion)
- DR-NTU (Nanyang Technological University) (submittedVersion)
- Funders
- Agency for Science, Technology and Research (IAF-PP H17/01/a0/0K9)
- National Medical Research Council (NMRC/CBRG/0048/2013, NMRC/TCR/008-SERI/2013)
- UGC-DAE Consortium for Scientific Research (CSR-KN/CRS-70/2015-16/811)
- Singapore National Eye Centre (R1181/83/2014)
- Lee Kong Chian School of Medicine, Nanyang Technological University Singapore (L0412290, SAI-L0494003)
- Topics
- Physical Sciences › Materials Science › Biomaterials › Electrospun Nanofibers in Biomedical Applications
- Health Sciences › Medicine › Surgery › Wound Healing and Treatments
- Physical Sciences › Materials Science › Polymers and Plastics › Dyeing and Modifying Textile Fibers
- Keywords
- antimicrobial dressings, core-shell nanofibers, coaxial electrospinning, burn wound healing, second-degree burns, Gymnema sylvestre, herbal plant extracts, minocycline, antibiotic synergy, antibiofilm activity, sustained drug release, re-epithelialization, collagen organization, porcine burn model
- MeSH terms
- Animals, Anti-Infective Agents, Bacterial Adhesion, Bandages, Humans, Skin, Swine, Wound Healing, Biofilms, Herbal Medicine, Cell Proliferation, Nanofibers
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