1
|
Jin H, Wen X, Sun R, Yu Y, Guo Z, Yang Y, Li L, Sun B. Engineered nanovesicles from activated neutrophils with enriched bactericidal proteins have molecular debridement ability and promote infectious wound healing. BURNS & TRAUMA 2024; 12:tkae018. [PMID: 38903935 PMCID: PMC11188537 DOI: 10.1093/burnst/tkae018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 02/22/2024] [Accepted: 03/27/2024] [Indexed: 06/22/2024]
Abstract
Background Bacterial infections pose a considerable threat to skin wounds, particularly in the case of challenging-to-treat diabetic wounds. Systemic antibiotics often struggle to penetrate deep wound tissues and topically applied antibiotics may lead to sensitization, necessitating the development of novel approaches for effectively treating germs in deep wound tissues. Neutrophils, the predominant immune cells in the bloodstream, rapidly release an abundance of molecules via degranulation upon activation, which possess the ability to directly eliminate pathogens. This study was designed to develop novel neutrophil cell engineered nanovesicles (NVs) with high production and explore their bactericidal properties and application in promoting infectious wound healing. Methods Neutrophils were isolated from peripheral blood and activated in vitro via phorbol myristate acetate (PMA) stimulation. Engineered NVs were prepared by sequentially extruding activated neutrophils followed by ultracentrifugation and were compared with neutrophil-derived exosomes in terms of morphology, size distribution and protein contents. The bactericidal effect of NVs in vitro was evaluated using the spread plate technique, LIVE/DEAD backlight bacteria assay and observation of bacterial morphology. The therapeutic effects of NVs in vivo were evaluated using wound contraction area measurements, histopathological examinations, assessments of inflammatory factors and immunochemical staining. Results Activated neutrophils stimulated with PMA in vitro promptly release a substantial amount of bactericidal proteins. NVs are similar to exosomes in terms of morphology and particle size, but they exhibit a significantly higher enrichment of bactericidal proteins. In vitro, NVs demonstrated a significant bactericidal effect, presumably mediated by the enrichment of bactericidal proteins such as lysozyme. These NVs significantly accelerated wound healing, leading to a marked reduction in bacterial load, downregulation of inflammatory factors and enhanced collagen deposition in a full-thickness infectious skin defect model. Conclusions We developed engineered NVs derived from activated neutrophils to serve as a novel debridement method targeting bacteria in deep tissues, ultimately promoting infectious wound healing.
Collapse
Affiliation(s)
- Hangfei Jin
- Research Center for Neutrophil Engineering Technology, Affiliated Suzhou Hospital of Nanjing Medical University, located at No. 242, Guangji Road, Gusu District, Suzhou 215008, Jiangsu Province, China
| | - Xiao Wen
- Research Center for Neutrophil Engineering Technology, Affiliated Suzhou Hospital of Nanjing Medical University, located at No. 242, Guangji Road, Gusu District, Suzhou 215008, Jiangsu Province, China
| | - Ran Sun
- Research Center for Neutrophil Engineering Technology, Affiliated Suzhou Hospital of Nanjing Medical University, located at No. 242, Guangji Road, Gusu District, Suzhou 215008, Jiangsu Province, China
| | - Yanzhen Yu
- Research Center for Neutrophil Engineering Technology, Affiliated Suzhou Hospital of Nanjing Medical University, located at No. 242, Guangji Road, Gusu District, Suzhou 215008, Jiangsu Province, China
| | - Zaiwen Guo
- Research Center for Neutrophil Engineering Technology, Affiliated Suzhou Hospital of Nanjing Medical University, located at No. 242, Guangji Road, Gusu District, Suzhou 215008, Jiangsu Province, China
| | - Yunxi Yang
- Research Center for Neutrophil Engineering Technology, Affiliated Suzhou Hospital of Nanjing Medical University, located at No. 242, Guangji Road, Gusu District, Suzhou 215008, Jiangsu Province, China
| | - Linbin Li
- Research Center for Neutrophil Engineering Technology, Affiliated Suzhou Hospital of Nanjing Medical University, located at No. 242, Guangji Road, Gusu District, Suzhou 215008, Jiangsu Province, China
| | - Bingwei Sun
- Research Center for Neutrophil Engineering Technology, Affiliated Suzhou Hospital of Nanjing Medical University, located at No. 242, Guangji Road, Gusu District, Suzhou 215008, Jiangsu Province, China
| |
Collapse
|
2
|
Alzahrani DA, Alsulami KA, Alsulaihem FM, Bakr AA, Booq RY, Alfahad AJ, Aodah AH, Alsudir SA, Fathaddin AA, Alyamani EJ, Almomen AA, Tawfik EA. Dual Drug-Loaded Coaxial Nanofiber Dressings for the Treatment of Diabetic Foot Ulcer. Int J Nanomedicine 2024; 19:5681-5703. [PMID: 38882541 PMCID: PMC11179665 DOI: 10.2147/ijn.s460467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Accepted: 05/21/2024] [Indexed: 06/18/2024] Open
Abstract
Introduction Diabetes mellitus is frequently associated with foot ulcers, which pose significant health risks and complications. Impaired wound healing in diabetic patients is attributed to multiple factors, including hyperglycemia, neuropathy, chronic inflammation, oxidative damage, and decreased vascularization. Rationale To address these challenges, this project aims to develop bioactive, fast-dissolving nanofiber dressings composed of polyvinylpyrrolidone loaded with a combination of an antibiotic (moxifloxacin or fusidic acid) and anti-inflammatory drug (pirfenidone) using electrospinning technique to prevent the bacterial growth, reduce inflammation, and expedite wound healing in diabetic wounds. Results The fabricated drug-loaded fibers exhibited diameters of 443 ± 67 nm for moxifloxacin/pirfenidone nanofibers and 488 ± 92 nm for fusidic acid/pirfenidone nanofibers. The encapsulation efficiency, drug loading and drug release studies for the moxifloxacin/pirfenidone nanofibers were found to be 70 ± 3% and 20 ± 1 µg/mg, respectively, for moxifloxacin, and 96 ± 6% and 28 ± 2 µg/mg, respectively, for pirfenidone, with a complete release of both drugs within 24 hours, whereas the fusidic acid/pirfenidone nanofibers were found to be 95 ± 6% and 28 ± 2 µg/mg, respectively, for fusidic acid and 102 ± 5% and 30 ± 2 µg/mg, respectively, for pirfenidone, with a release rate of 66% for fusidic acid and 80%, for pirfenidone after 24 hours. The efficacy of the prepared nanofiber formulations in accelerating wound healing was evaluated using an induced diabetic rat model. All tested formulations showed an earlier complete closure of the wound compared to the controls, which was also supported by the histopathological assessment. Notably, the combination of fusidic acid and pirfenidone nanofibers demonstrated wound healing acceleration on day 8, earlier than all tested groups. Conclusion These findings highlight the potential of the drug-loaded nanofibrous system as a promising medicated wound dressing for diabetic foot applications.
Collapse
Affiliation(s)
- Dunia A Alzahrani
- Advanced Diagnostics and Therapeutics Technologies Institute, Health Sector, King Abdulaziz City for Science and Technology (KACST), Riyadh, 11442, Saudi Arabia
| | - Khulud A Alsulami
- Advanced Diagnostics and Therapeutics Technologies Institute, Health Sector, King Abdulaziz City for Science and Technology (KACST), Riyadh, 11442, Saudi Arabia
| | - Fatemah M Alsulaihem
- Advanced Diagnostics and Therapeutics Technologies Institute, Health Sector, King Abdulaziz City for Science and Technology (KACST), Riyadh, 11442, Saudi Arabia
| | - Abrar A Bakr
- Advanced Diagnostics and Therapeutics Technologies Institute, Health Sector, King Abdulaziz City for Science and Technology (KACST), Riyadh, 11442, Saudi Arabia
| | - Rayan Y Booq
- Wellness and Preventative Medicine Institute, Health Sector, King Abdulaziz City for Science and Technology (KACST), Riyadh, 11442, Saudi Arabia
| | - Ahmed J Alfahad
- Waste Management and Recycling Technologies Institute, Sustainability and Environment Sector, King Abdulaziz City for Science and Technology (KACST), Riyadh, 11442, Saudi Arabia
| | - Alhassan H Aodah
- Advanced Diagnostics and Therapeutics Technologies Institute, Health Sector, King Abdulaziz City for Science and Technology (KACST), Riyadh, 11442, Saudi Arabia
| | - Samar A Alsudir
- Bioengineering Institute, Health Sector, King Abdulaziz City for Science and Technology (KACST), Riyadh, 11442, Saudi Arabia
| | - Amany A Fathaddin
- Department of Pathology, College of Medicine, King Saud University, Riyadh, 12372, Saudi Arabia
- King Saud University Medical City, Riyadh, 12372, Saudi Arabia
| | - Essam J Alyamani
- Wellness and Preventative Medicine Institute, Health Sector, King Abdulaziz City for Science and Technology (KACST), Riyadh, 11442, Saudi Arabia
| | - Aliyah A Almomen
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Essam A Tawfik
- Advanced Diagnostics and Therapeutics Technologies Institute, Health Sector, King Abdulaziz City for Science and Technology (KACST), Riyadh, 11442, Saudi Arabia
| |
Collapse
|
3
|
Ghanbari M, Salkovskiy Y, Carlson MA. The rat as an animal model in chronic wound research: An update. Life Sci 2024; 351:122783. [PMID: 38848945 DOI: 10.1016/j.lfs.2024.122783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 03/29/2024] [Accepted: 06/04/2024] [Indexed: 06/09/2024]
Abstract
The increasing global prevalence of chronic wounds underscores the growing importance of developing effective animal models for their study. This review offers a critical evaluation of the strengths and limitations of rat models frequently employed in chronic wound research and proposes potential improvements. It explores these models in the context of key comorbidities, including diabetes, venous and arterial insufficiency, pressure-induced blood flow obstruction, and infections. Additionally, the review examines important wound factors including age, sex, smoking, and the impact of anesthetic and analgesic drugs, acknowledging their substantial effects on research outcomes. A thorough understanding of these variables is crucial for refining animal models and can provide valuable insights for future research endeavors.
Collapse
Affiliation(s)
- Mahboubeh Ghanbari
- Department of Biomechanics, University of Nebraska at Omaha, Omaha, NE, USA.
| | - Yury Salkovskiy
- Department of Biomechanics, University of Nebraska at Omaha, Omaha, NE, USA.
| | - Mark A Carlson
- Department of Surgery, Department of Genetics, Cell Biology and Anatomy, University of Nebraska Medical Center, Omaha, NE, USA.
| |
Collapse
|
4
|
Li A, Ma B, Hua S, Ping R, Ding L, Tian B, Zhang X. Chitosan-based injectable hydrogel with multifunction for wound healing: A critical review. Carbohydr Polym 2024; 333:121952. [PMID: 38494217 DOI: 10.1016/j.carbpol.2024.121952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Revised: 02/08/2024] [Accepted: 02/13/2024] [Indexed: 03/19/2024]
Abstract
Different types of clinical wounds are difficult to treat while infected by bacteria. Wound repair involves multiple cellular and molecular interactions, which is a complicated process. However, wound repair often suffers from abnormal cellular functions or pathways that result in unavoidable side effects, so there is an urgent need for a material that can heal wounds quickly and with few side effects. Based on these needs, hydrogels with injectable properties have been confirmed to be able to undergo self-healing, which provides favorable conditions for wound healing. Notably, as a biopolymer with excellent easy-to-modify properties from a wide range of natural sources, chitosan can be used to prepare injectable hydrogel with multifunction for wound healing because of its outstanding flowability and injectability. Especially, chitosan-based hydrogels with marked biocompatibility, non-toxicity, and bio-adhesion properties are ideal for facilitating wound healing. In this review, the characteristics and healing mechanisms of different wounds are briefly summarized. In addition, the preparation and characterization of injectable chitosan hydrogels in recent years are classified. Additionally, the bioactive properties of this type of hydrogel in vitro and in vivo are demonstrated, and future trend in wound healing is prospected.
Collapse
Affiliation(s)
- Aiqin Li
- Institute of Medical Sciences, General Hospital of Ningxia Medical University, Yinchuan, Ningxia 750004, China; Department of Day Ward, General Hospital of Ningxia Medical University, Yinchuan, Ningxia 750001, China
| | - Bin Ma
- Department of Spine Surgery, Yinchuan Guolong Orthopedic Hospital, Yinchuan, Ningxia 750001, China
| | - Shiyao Hua
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao SAR 999078, China.
| | - Rui Ping
- Department of Endocrinology, The First People's Hospital of Yinchuan, Yinchuan, Ningxia 750001, China
| | - Lu Ding
- Institute of Medical Sciences, General Hospital of Ningxia Medical University, Yinchuan, Ningxia 750004, China
| | - Bingren Tian
- Institute of Medical Sciences, General Hospital of Ningxia Medical University, Yinchuan, Ningxia 750004, China.
| | - Xu Zhang
- Institute of Medical Sciences, General Hospital of Ningxia Medical University, Yinchuan, Ningxia 750004, China.
| |
Collapse
|
5
|
Youn S, Ki MR, Abdelhamid MAA, Pack SP. Biomimetic Materials for Skin Tissue Regeneration and Electronic Skin. Biomimetics (Basel) 2024; 9:278. [PMID: 38786488 PMCID: PMC11117890 DOI: 10.3390/biomimetics9050278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Revised: 04/26/2024] [Accepted: 05/01/2024] [Indexed: 05/25/2024] Open
Abstract
Biomimetic materials have become a promising alternative in the field of tissue engineering and regenerative medicine to address critical challenges in wound healing and skin regeneration. Skin-mimetic materials have enormous potential to improve wound healing outcomes and enable innovative diagnostic and sensor applications. Human skin, with its complex structure and diverse functions, serves as an excellent model for designing biomaterials. Creating effective wound coverings requires mimicking the unique extracellular matrix composition, mechanical properties, and biochemical cues. Additionally, integrating electronic functionality into these materials presents exciting possibilities for real-time monitoring, diagnostics, and personalized healthcare. This review examines biomimetic skin materials and their role in regenerative wound healing, as well as their integration with electronic skin technologies. It discusses recent advances, challenges, and future directions in this rapidly evolving field.
Collapse
Affiliation(s)
- Sol Youn
- Department of Biotechnology and Bioinformatics, Korea University, Sejong-Ro 2511, Sejong 30019, Republic of Korea; (S.Y.); (M.A.A.A.)
| | - Mi-Ran Ki
- Department of Biotechnology and Bioinformatics, Korea University, Sejong-Ro 2511, Sejong 30019, Republic of Korea; (S.Y.); (M.A.A.A.)
- Institute of Industrial Technology, Korea University, Sejong-Ro 2511, Sejong 30019, Republic of Korea
| | - Mohamed A. A. Abdelhamid
- Department of Biotechnology and Bioinformatics, Korea University, Sejong-Ro 2511, Sejong 30019, Republic of Korea; (S.Y.); (M.A.A.A.)
- Department of Botany and Microbiology, Faculty of Science, Minia University, Minia 61519, Egypt
| | - Seung-Pil Pack
- Department of Biotechnology and Bioinformatics, Korea University, Sejong-Ro 2511, Sejong 30019, Republic of Korea; (S.Y.); (M.A.A.A.)
| |
Collapse
|
6
|
Sahu K, Krishna H, Shrivastava R, Majumdar A, Chowdhury A, Chakraborty S, Majumder SK. Evaluation of the potential of Delta-aminolevulinic acid for simultaneous detection of bioburden and anti-microbial photodynamic therapy of MRSA infected wounds in Swiss albino mice. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY. B, BIOLOGY 2024; 254:112892. [PMID: 38513542 DOI: 10.1016/j.jphotobiol.2024.112892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2023] [Revised: 02/13/2024] [Accepted: 03/14/2024] [Indexed: 03/23/2024]
Abstract
BACKGROUND The dramatic increase of drug-resistant bacteria necessitates urgent development of platforms to simultaneously detect and inactivate bacteria causing wound infections, but are confronted with various challenges. Delta amino levulinic acid (ALA) induced protoporphyrin IX (PpIX) can be a promising modality for simultaneous bioburden diagnostics and therapeutics. Herein, we report utility of ALA induced protoporphyrin (PpIX) based simultaneous bioburden detection, photoinactivation and therapeutic outcome assessment in methicillin resistant Staphylococcus aureus (MRSA) infected wounds of mice. METHODS MRSA infected wounds treated with 10% ALA were imaged with help of a blue LED (∼405 nm) based, USB powered, hand held device integrated with a modular graphic user interface (GUI). Effect of ALA application time, bacteria load, post bacteria application time points on wound fluorescence studied. PpIX fluorescence observed after excitation with blue LEDs was used to detect bioburden, start red light mediated antimicrobial photodynamic therapy (aPDT), determine aPDT effectiveness and assess selectivity of the approach. RESULTS ALA-PpIX fluorescence of wound bed discriminates infected from uninfected wounds and detects clinically relevant load. While wound fluorescence pattern changes as a function of ALA incubation and post infection time, intra-wound inhomogeneity in fluorescence correlates with the Gram staining data on presence of biofilms foci. Lack of red fluorescence from wound granulation tissue treated with ALA suggests selectivity of the approach. Further, significant reduction (∼50%) in red fluorescence, quantified using the GUI, relates well with bacteria load reduction observed post topical aPDT. CONCLUSION The potential of ALA induced PpIX for simultaneous detection of bioburden, photodynamic inactivation and "florescence-guided aPDT assessment" is demonstrated in MRSA infected wounds of mice.
Collapse
Affiliation(s)
- Khageswar Sahu
- Laser Biomedical Applications Division, Raja Ramanna Centre for Advanced Technology, Indore, Madhya Pradesh 452013, India; Homi Bhaba National Institute, Training School Complex, Anushakti Nagar, Mumbai 400 094, India.
| | - Hemant Krishna
- Laser Biomedical Applications Division, Raja Ramanna Centre for Advanced Technology, Indore, Madhya Pradesh 452013, India
| | - Rashmi Shrivastava
- Laser Biomedical Applications Division, Raja Ramanna Centre for Advanced Technology, Indore, Madhya Pradesh 452013, India; Homi Bhaba National Institute, Training School Complex, Anushakti Nagar, Mumbai 400 094, India
| | - Anamitra Majumdar
- Laser Biomedical Applications Division, Raja Ramanna Centre for Advanced Technology, Indore, Madhya Pradesh 452013, India
| | - Anupam Chowdhury
- Laser Biomedical Applications Division, Raja Ramanna Centre for Advanced Technology, Indore, Madhya Pradesh 452013, India
| | - Sourabrata Chakraborty
- Laser Biomedical Applications Division, Raja Ramanna Centre for Advanced Technology, Indore, Madhya Pradesh 452013, India
| | - Shovan Kumar Majumder
- Laser Biomedical Applications Division, Raja Ramanna Centre for Advanced Technology, Indore, Madhya Pradesh 452013, India; Homi Bhaba National Institute, Training School Complex, Anushakti Nagar, Mumbai 400 094, India
| |
Collapse
|
7
|
Shen S, Miskolci V, Dewey CN, Sauer JD, Huttenlocher A. Infection induced inflammation impairs wound healing through IL-1β signaling. iScience 2024; 27:109532. [PMID: 38577110 PMCID: PMC10993181 DOI: 10.1016/j.isci.2024.109532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 01/14/2024] [Accepted: 03/16/2024] [Indexed: 04/06/2024] Open
Abstract
Wound healing is impaired by infection; however, how microbe-induced inflammation modulates tissue repair remains unclear. We took advantage of the optical transparency of zebrafish and a genetically tractable microbe, Listeria monocytogenes, to probe the role of infection and inflammation in wound healing. Infection with bacteria engineered to activate the inflammasome, Lm-Pyro, induced persistent inflammation and impaired healing despite low bacterial burden. Inflammatory infections induced il1b expression and blocking IL-1R signaling partially rescued wound healing in the presence of persistent infection. We found a critical window of microbial clearance necessary to limit persistent inflammation and enable efficient wound repair. Taken together, our findings suggest that the dynamics of microbe-induced tissue inflammation impacts repair in complex tissue damage independent of bacterial load, with a critical early window for efficient tissue repair.
Collapse
Affiliation(s)
- Simone Shen
- Department of Medical Microbiology and Immunology, University of Wisconsin-Madison, Madison, WI, USA
| | - Veronika Miskolci
- Department of Medical Microbiology and Immunology, University of Wisconsin-Madison, Madison, WI, USA
| | - Colin N. Dewey
- Department of Biostatistics and Medical Informatics, University of Wisconsin-Madison, Madison, WI, USA
| | - John-Demian Sauer
- Department of Medical Microbiology and Immunology, University of Wisconsin-Madison, Madison, WI, USA
| | - Anna Huttenlocher
- Department of Medical Microbiology and Immunology, University of Wisconsin-Madison, Madison, WI, USA
- Department of Pediatrics, University of Wisconsin-Madison, Madison, WI, USA
| |
Collapse
|
8
|
Ekhtiari-Sadegh S, Samani S, Barneh F, Dashtbin S, Shokrgozar MA, Pooshang Bagheri K. Rapid eradication of vancomycin and methicillin-resistant Staphylococcus aureus by MDP1 antimicrobial peptide coated on photocrosslinkable chitosan hydrogel: in vitro antibacterial and in silico molecular docking studies. Front Bioeng Biotechnol 2024; 12:1385001. [PMID: 38681961 PMCID: PMC11047131 DOI: 10.3389/fbioe.2024.1385001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2024] [Accepted: 03/26/2024] [Indexed: 05/01/2024] Open
Abstract
Introduction Antibiotic resistance and weak bioavailability of antibiotics in the skin due to systemic administration leads to failure in eradication of vancomycin- and methicillin-resistant Staphylococcus aureus (VRSA and MRSA)-associated wound infections and subsequent septicemia and even death. Accordingly, this study aimed at designing a photocrosslinkable methacrylated chitosan (MECs) hydrogel coated by melittin-derived peptide 1 (MDP1) that integrated the antibacterial activity with the promising skin regenerative capacity of the hydrogel to eradicate bacteria by burst release strategy. Methods The MECs was coated with MDP1 (MECs-MDP1), characterized, and the hydrogel-peptide interaction was evaluated by molecular docking. Antibacterial activities of MECs-MDP1 were evaluated against VRSA and MRSA bacteria and compared to MECs-vancomycin (MECs-vanco). Antibiofilm activity of MECs-MDP1 was studied by our novel 'in situ biofilm inhibition zone (IBIZ)' assay, and SEM. Biocompatibility with human dermal fibroblast cells (HDFs) was also evaluated. Results and Discussion Molecular docking showed hydrogen bonds as the most interactions between MDP1 and MECs at a reasonable affinity. MECs-MDP1 eradicated the bacteria rapidly by burst release strategy whereas MECs-vanco failed to eradicate them at the same time intervals. Antibiofilm activity of MECs-MDP1 were also proved successfully. As a novel report, molecular docking analysis has demonstrated that MDP1 covers the structure of MECs and also binds to lysozyme with a reasonable affinity, which may explain the inhibition of lysozyme. MECs-MDP1 was also biocompatible with human dermal fibroblast skin cells, which indicates its safe future application. The antibacterial properties of a photocrosslinkable methacrylated chitosan-based hydrogel coated with MDP1 antimicrobial peptide were successfully proved against the most challenging antibiotic-resistant bacteria causing nosocomial wound infections; VRSA and MRSA. Molecular docking analysis revealed that MDP1 interacts with MECs mainly through hydrogen bonds with reasonable binding affinity. MECs-MDP1 hydrogels eradicated the planktonic state of bacteria by burst release of MDP1 in just a few hours whereas MECs-vanco failed to eradicate them. inhibition zone assay showed the anti-biofilm activity of the MECs-MDP1 hydrogel too. These findings emphasize that MECs-MDP1 hydrogel would be suggested as a biocompatible wound-dressing candidate with considerable and rapid antibacterial activities to prevent/eradicate VRSA/MRSA bacterial wound infections.
Collapse
Affiliation(s)
- Sarvenaz Ekhtiari-Sadegh
- Venom and Biotherapeutics Molecules Lab, Medical Biotechnology Department, Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran
| | - Saeed Samani
- Department of Tissue Engineering, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Farnoosh Barneh
- Venom and Biotherapeutics Molecules Lab, Medical Biotechnology Department, Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran
| | - Shirin Dashtbin
- Department of Microbiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | | | - Kamran Pooshang Bagheri
- Venom and Biotherapeutics Molecules Lab, Medical Biotechnology Department, Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran
| |
Collapse
|
9
|
Sanjarnia P, Picchio ML, Polegre Solis AN, Schuhladen K, Fliss PM, Politakos N, Metterhausen L, Calderón M, Osorio-Blanco ER. Bringing innovative wound care polymer materials to the market: Challenges, developments, and new trends. Adv Drug Deliv Rev 2024; 207:115217. [PMID: 38423362 DOI: 10.1016/j.addr.2024.115217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 01/24/2024] [Accepted: 02/18/2024] [Indexed: 03/02/2024]
Abstract
The development of innovative products for treating acute and chronic wounds has become a significant topic in healthcare, resulting in numerous products and innovations over time. The growing number of patients with comorbidities and chronic diseases, which may significantly alter, delay, or inhibit normal wound healing, has introduced considerable new challenges into the wound management scenario. Researchers in academia have quickly identified promising solutions, and many advanced wound healing materials have recently been designed; however, their successful translation to the market remains highly complex and unlikely without the contribution of industry experts. This review article condenses the main aspects of wound healing applications that will serve as a practical guide for researchers working in academia and industry devoted to designing, evaluating, validating, and translating polymer wound care materials to the market. The article highlights the current challenges in wound management, describes the state-of-the-art products already on the market and trending polymer materials, describes the regulation pathways for approval, discusses current wound healing models, and offers a perspective on new technologies that could soon reach consumers. We envision that this comprehensive review will significantly contribute to highlighting the importance of networking and exchanges between academia and healthcare companies. Only through the joint of these two actors, where innovation, manufacturing, regulatory insights, and financial resources act in harmony, can wound care products be developed efficiently to reach patients quickly and affordably.
Collapse
Affiliation(s)
- Pegah Sanjarnia
- POLYMAT, Applied Chemistry Department, Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel de Lardizábal, 3, 20018 Donostia-San Sebastián, Spain
| | - Matías L Picchio
- POLYMAT, Applied Chemistry Department, Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel de Lardizábal, 3, 20018 Donostia-San Sebastián, Spain; Instituto de Desarrollo Tecnológico para la Industria Química (INTEC), CONICET, Güemes 3450, Santa Fe 3000, Argentina
| | - Agustin N Polegre Solis
- Beiersdorf AG, Research & Development Department, Beiersdorfstraße 1-9, 22529 Hamburg, Germany
| | - Katharina Schuhladen
- Beiersdorf AG, Research & Development Department, Beiersdorfstraße 1-9, 22529 Hamburg, Germany
| | - Patricia M Fliss
- Beiersdorf AG, Research & Development Department, Beiersdorfstraße 1-9, 22529 Hamburg, Germany
| | - Nikolaos Politakos
- POLYMAT, Applied Chemistry Department, Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel de Lardizábal, 3, 20018 Donostia-San Sebastián, Spain
| | - Lutz Metterhausen
- Beiersdorf AG, Research & Development Department, Beiersdorfstraße 1-9, 22529 Hamburg, Germany
| | - Marcelo Calderón
- POLYMAT, Applied Chemistry Department, Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel de Lardizábal, 3, 20018 Donostia-San Sebastián, Spain; IKERBASQUE, Basque Foundation for Science, Plaza Euskadi 5, 48009 Bilbao, Spain
| | - Ernesto R Osorio-Blanco
- Beiersdorf AG, Research & Development Department, Beiersdorfstraße 1-9, 22529 Hamburg, Germany.
| |
Collapse
|
10
|
Yang X, Guo D, Ji X, Shi C, Messina JM, Suo L, Luo J. Telodendrimer functionalized hydrogel platform for sustained antibiotics release in infection control. Acta Biomater 2024; 178:147-159. [PMID: 38447811 DOI: 10.1016/j.actbio.2024.02.041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 02/23/2024] [Accepted: 02/27/2024] [Indexed: 03/08/2024]
Abstract
Wound infection commonly causes delayed healing, especially in the setting of chronic wounds. Local release of antibiotics is considered a viable approach to treat chronic wounds. We have developed a versatile telodendrimer (TD) platform for efficient loading of charged antibiotic molecules via a combination of multivalent and synergistic charge and hydrophobic interactions. The conjugation of TD in biocompatible hydrogel allows for topical application to provide sustained antibiotic release. Notably, a drug loading capacity as high as 20 % of the drug-to-resin dry weight ratio can be achieved. The payload content (PC) and release profile of the various antibiotics can be optimized by fine-tuning TD density and valency in hydrogel based on the charge and hydrophobic features of the drug, e.g., polymyxin B (PMB), gentamycin (GM), and daptomycin (Dap), for effective infection control. We have shown that hydrogel with moderately reduced TD density demonstrates a more favorable release profile than hydrogel with higher TD density. Antibiotics loaded in TD hydrogel have comparable antimicrobial potency and reduced cytotoxicity compared to the free antibiotics due to a prolonged, controlled drug release profile. In a mouse model of skin and soft tissue infection, the subcutaneous administration of PMB-loaded TD hydrogel effectively eliminated the bacterial burden. Overall, these results suggest that engineerable TD hydrogels have great potential as a topical treatment to control infection for wound healing. STATEMENT OF SIGNIFICANCE: Wound infection causes a significant delay in the wound healing process, which results in a significant financial and resource burden to the healthcare system. PEGA-telodendrimer (TD) resin hydrogel is an innovative and versatile platform that can be fine-tuned to efficiently encapsulate different antibiotics by altering charged and hydrophobic structural moieties. Additionally, this platform is advantageous as the TD density in the resin can also be fine-tuned to provide the desired antibiotic payload release profile. Sustained antibiotics release through optimization of TD density provides a prolonged therapeutic window and reduces burst release-induced cytotoxicity compared to conventional antibiotics application. Studies in a preclinical mouse model of bacteria-induced skin and soft tissue infection demonstrated promising therapeutic efficacy as evidenced by effective infection control and prolonged antibacterial efficacy of antibiotics-loaded PEGA-TD resin. In conclusion, the PEGA-TD resin platform provides a highly customizable approach for effective antibiotics release with significant potential for topical application to treat various bacterial wound infections to promote wound healing.
Collapse
Affiliation(s)
- Xiguang Yang
- Department of Pharmacology, State University of New York Upstate Medical University, Syracuse, NY 13210, United States
| | - Dandan Guo
- Department of Pharmacology, State University of New York Upstate Medical University, Syracuse, NY 13210, United States
| | - Xiaotian Ji
- Department of Pharmacology, State University of New York Upstate Medical University, Syracuse, NY 13210, United States
| | - Changying Shi
- Department of Pharmacology, State University of New York Upstate Medical University, Syracuse, NY 13210, United States
| | - Jennifer M Messina
- Department of Pharmacology, State University of New York Upstate Medical University, Syracuse, NY 13210, United States
| | - Liye Suo
- Department of Pathology, State University of New York Upstate Medical University, Syracuse, NY 13210, United States
| | - Juntao Luo
- Department of Pharmacology, State University of New York Upstate Medical University, Syracuse, NY 13210, United States; Department of Surgery, State University of New York Upstate Medical University, Syracuse, NY 13210, United States; Department of Microbiology and Immunology, State University of New York Upstate Medical University, Syracuse, NY 13210, United States; Upstate Cancer Center, State University of New York Upstate Medical University, Syracuse, NY 13210, United States; Upstate Sepsis Interdisciplinary Research Center, State University of New York Upstate Medical University, Syracuse, NY 13210, United States.
| |
Collapse
|
11
|
Johnson J, Johnson AR, Andersen CA, Kelso MR, Oropallo AR, Serena TE. Skin Pigmentation Impacts the Clinical Diagnosis of Wound Infection: Imaging of Bacterial Burden to Overcome Diagnostic Limitations. J Racial Ethn Health Disparities 2024; 11:1045-1055. [PMID: 37039975 PMCID: PMC10933203 DOI: 10.1007/s40615-023-01584-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 03/22/2023] [Accepted: 03/31/2023] [Indexed: 04/12/2023]
Abstract
Underrepresentation of diverse skin tones in medical education and providers' implicit racial bias drives inequities in wound care, such as disproportionally poor outcomes for Black patients. Diagnostic indicators (e.g., erythema) can present differently depending on skin pigmentation. This post hoc analysis of 350 chronic wounds from a prospective 14-site clinical trial aimed to determine how the perception of clinical signs and symptoms of infection (CSS) differs by patient skin tone and if fluorescence-imaging can offer a more objective diagnostic solution. Participants were grouped by skin tone (low, medium, high) as measured by the Fitzpatrick Skin Phototype Classification (FSPC) scale. CSS and total bacterial load (TBL) were compared across FSPC groups, along with sensitivity to detect TBL >104 CFU/g using CSS alone and combined with fluorescence-imaging. Erythema was reported less often with increasing FSPC score (p = 0.05), from 13.4% (low), to 7.2% (medium), to 2.3% (high), despite comparable bacterial loads (median = 1.8 × 106 CFU/g). CSS sensitivity in the high group (2.9%) was 4.8-fold to 8.4-fold lower than the low (p = 0.003) and medium groups (p = 0.04). Fluorescence-imaging significantly improved the detection of high bacterial load in each group, peaking in the high group at 12-fold over CSS alone. These findings underscore the threat of pervasive racialized health inequities in wound care, where missed diagnosis of pathogenic bacteria and infection could delay treatment, increasing the risk of complications and poor outcomes. Fluorescence-imaging is poised to fill this gap, at least in part, serving as a more objective and equitable indicator of wound bacteria. Clinicaltrials.gov #NCT03540004 registered 16-05-2018.
Collapse
Affiliation(s)
- Jonathan Johnson
- Comprehensive Wound Care Services and Capital Aesthetic & Laser Center, Washington, DC, USA
| | - Alton R Johnson
- University of Michigan School of Medicine in the Division of Metabolism, Endocrinology and Diabetes-Podiatry, Ann Arbor, MI, USA
| | | | | | - Alisha R Oropallo
- Comprehensive Wound Healing Center and Hyperbarics, Northwell Health and Department of Vascular Surgery, Zucker School of Medicine Hofstra/Northwell, Hempstead, NY, USA
| | | |
Collapse
|
12
|
Gaudreau LI, Stewart EJ. Vasculature-on-a-chip technologies as platforms for advanced studies of bacterial infections. BIOMICROFLUIDICS 2024; 18:021503. [PMID: 38560344 PMCID: PMC10977040 DOI: 10.1063/5.0179281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Accepted: 02/29/2024] [Indexed: 04/04/2024]
Abstract
Bacterial infections frequently occur within or near the vascular network as the vascular network connects organ systems and is essential in delivering and removing blood, essential nutrients, and waste products to and from organs. In turn, the vasculature plays a key role in the host immune response to bacterial infections. Technological advancements in microfluidic device design and development have yielded increasingly sophisticated and physiologically relevant models of the vasculature including vasculature-on-a-chip and organ-on-a-chip models. This review aims to highlight advancements in microfluidic device development that have enabled studies of the vascular response to bacteria and bacterial-derived molecules at or near the vascular interface. In the first section of this review, we discuss the use of parallel plate flow chambers and flow cells in studies of bacterial adhesion to the vasculature. We then highlight microfluidic models of the vasculature that have been utilized to study bacteria and bacterial-derived molecules at or near the vascular interface. Next, we review organ-on-a-chip models inclusive of the vasculature and pathogenic bacteria or bacterial-derived molecules that stimulate an inflammatory response within the model system. Finally, we provide recommendations for future research in advancing the understanding of host-bacteria interactions and responses during infections as well as in developing innovative antimicrobials for preventing and treating bacterial infections that capitalize on technological advancements in microfluidic device design and development.
Collapse
Affiliation(s)
- Lily Isabelle Gaudreau
- Chemical Engineering, Worcester Polytechnic Institute, Worcester, Massachusetts 01609, USA
| | | |
Collapse
|
13
|
Erickson EL, Katta J, Sun S, Shan L, Lemeshow S, Schofield ML. Retrospective review of acute post-tracheostomy complications and contributing risk factors. Clin Otolaryngol 2024; 49:277-282. [PMID: 38095241 DOI: 10.1111/coa.14131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 11/01/2023] [Accepted: 11/18/2023] [Indexed: 02/16/2024]
Abstract
OBJECTIVE Tracheostomy is performed for various indications ranging from prolonged ventilation to airway obstruction. Many factors may play a role in the incidence of complications in the immediate post-operative period including patient-related factors. Chronic obstructive pulmonary disease and asthma are some of the most common pulmonary pathologies in the United States. The relationship between obstructive pulmonary diseases and acute post-tracheostomy complications has been incompletely studied. DESIGN A retrospective chart review was designed in order to answer these objectives. Medical records were reviewed for the technique used, complications, and contributing patient factors. Post-operative complications were defined as any tracheostomy-related adverse event occurring within 14 days. SETTING The study took place at an academic comprehensive cancer. PARTICIPANTS Inclusion criteria included patients from January 2017 through December 2018 who underwent a tracheostomy. Exclusion criteria included presence of stomaplasty, total laryngectomy, and tracheostomies performed at outside hospitals. MAIN OUTCOME MEASURES Patient factors examined included demographics, comorbidities, and body mass index with the primary outcome measured being the rate of tracheostomy complications. RESULTS The most common indication for tracheostomy among the 321 patients that met inclusion criteria was airway obstruction or a head and neck cancer surgical procedure. Obstructive sleep apnea was associated with acute complications in bivariate analysis (29.4% complications, p = .003). Chronic obstructive pulmonary disease and asthma were not associated with acute complications in bivariate analysis (11.6% complications, p = .302). Among the secondary outcomes measured, radiation was associated with early complications occurring in post-operative days 0-6 (1.1%, p = .029). CONCLUSION Patients with obstructive sleep apnea may have a higher risk of acute post-tracheostomy complications that might be due to the patient population at risk for obstructive sleep apnea. Patients with obstructive pulmonary pathologies such as asthma or chronic obstructive pulmonary disorder did not have an elevated risk of complications which is clinically significant when considering the utility of ventilation and tracheostomy in the management of acute respiratory failure secondary to these conditions.
Collapse
Affiliation(s)
| | - Juhi Katta
- The Ohio State University College of Medicine, Columbus, Ohio, USA
| | - Shuai Sun
- The Ohio State University Department of Public Health, Columbus, Ohio, USA
| | - Lingpeng Shan
- The Ohio State University Department of Public Health, Columbus, Ohio, USA
| | - Stanley Lemeshow
- The Ohio State University Department of Public Health, Columbus, Ohio, USA
| | - Minka L Schofield
- The Ohio State University Wexner Medical Center, Columbus, Ohio, USA
| |
Collapse
|
14
|
Babaluei M, Mojarab Y, Mottaghitalab F, Saeb MR, Farokhi M. Conductive hydrogels based on tragacanth and silk fibroin containing dopamine functionalized carboxyl-capped aniline pentamer: Merging hemostasis, antibacterial, and anti-oxidant properties into a multifunctional hydrogel for burn wound healing. Int J Biol Macromol 2024; 261:129932. [PMID: 38309399 DOI: 10.1016/j.ijbiomac.2024.129932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 01/20/2024] [Accepted: 01/31/2024] [Indexed: 02/05/2024]
Abstract
Hydrogels possessing both conductive characteristics and notable antibacterial and antioxidant properties hold considerable significance within the realm of wound healing and recovery. The object of current study is the development of conductive hydrogels with antibacterial and antioxidant properties, emphasizing their potential for effective wound healing, especially in treating third-degree burns. For this purpose, various conductive hydrogels are developed based on tragacanth and silk fibroin, with variable dopamine functionalized carboxyl-capped aniline pentamer (CAP@DA). The FTIR analysis confirms that the CAP powder was successfully synthesized and modified with DA. The results show that the incorporation of CAP@DA into hydrogels can increase the porosity and swellability of the hydrogels. Additionally, the mechanical and viscoelastic properties of the hydrogels are also improved. The release of vancomycin from the hydrogels is sustained over time, and the hydrogels are effective in inhibiting the growth of Methicillin-resistant Staphylococcus aureus (MRSA). In vitro cell studies of the hydrogels show that all hydrogels are biocompatible and support cell attachment. The hydrogels' tissue adhesiveness yielded a satisfactory hemostatic outcome in a rat-liver injury model. The third-degree burn was created on the dorsal back paravertebral region of the rats and then grafted with hydrogels. The burn was monitored for 3, 7, and 14 days to evaluate the efficacy of the hydrogel in promoting wound healing. The hydrogels revealed treatment effect, resulting in enhancements in wound closure, dermal collagen matrix production, new blood formation, and anti-inflammatory properties. Better results were obtained for hydrogel with increasing CAP@DA. In summary, the multifunctional conducive hydrogel, featuring potent antibacterial properties, markedly facilitated the wound regeneration process.
Collapse
Affiliation(s)
| | - Yasamin Mojarab
- National Cell Bank of Iran, Pasteur Institute of Iran, Tehran, Iran
| | - Fatemeh Mottaghitalab
- Nanotechnology Research Centre, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Reza Saeb
- Department of Pharmaceutical Technology, Medical University of Gdańsk, J. Hallera 107, 80-416 Gdańsk, Poland
| | - Mehdi Farokhi
- National Cell Bank of Iran, Pasteur Institute of Iran, Tehran, Iran.
| |
Collapse
|
15
|
Thirabowonkitphithan P, Žalnėravičius R, Shafaat A, Jakubauskas D, Neilands J, Laiwattanapaisal W, Ruzgas T. Electrogenicity of microbial biofilms of medically relevant microorganisms: potentiometric, amperometric and wireless detection. Biosens Bioelectron 2024; 246:115892. [PMID: 38056343 DOI: 10.1016/j.bios.2023.115892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Accepted: 11/27/2023] [Indexed: 12/08/2023]
Abstract
Since the progression of biofilm formation is related to the success of infection treatment, detecting microbial biofilms is of great interest. Biofilms of Gram-positive Staphylococcus aureus and Streptococcus gordonii bacteria, Gram-negative Pseudomonas aeruginosa and Escherichia coli bacteria, and Candida albicans yeast were examined using potentiometric, amperometric, and wireless readout modes in this study. As a biofilm formed, the open circuit potential (OCP) of biofilm hosting electrode (bioanode) became increasingly negative. Depending on the microorganism, the OCP ranged from -70 to -250 mV. The co-culture generated the most negative OCP (-300 mV vs Ag/AgCl), while the single-species biofilm formed by E. coli developed the least negative (-70 mV). The OCP of a fungal biofilm formed by C. albicans was -100 mV. The difference in electrode currents generated by biofilms was more pronounced. The current density of the S. aureus biofilm was 0.9‧10-7 A cm-2, while the value of the P. aeruginosa biofilm was 1.3‧10-6 A cm-2. Importantly, a biofilm formed by a co-culture of S. aureus and P. aeruginosa had a slightly higher negative OCP value and current density than the most electrogenic P. aeruginosa single-species biofilm. We present evidence that bacteria can share redox mediators found in multi-species biofilms. This synergy, enabling higher current and OCP values of multi-species biofilm hosting electrodes, could be beneficial for electrochemical detection of infectious biofilms in clinics. We demonstrate that the electrogenic biofilm can provide basis to construct novel wireless, chip-free, and battery-free biofilm detection method.
Collapse
Affiliation(s)
- Pannawich Thirabowonkitphithan
- Department of Biomedical Science, Faculty of Health and Society, Malmö University, 205 06, Malmö, Sweden; Biofilms - Research Center for Biointerfaces, Malmö University, 205 06, Malmö, Sweden; Graduate Program in Clinical Biochemistry and Molecular Medicine, Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Patumwan, Bangkok, 10330, Thailand
| | - Rokas Žalnėravičius
- Center for Physical Sciences and Technology, Department of Electrochemical Material Science, Sauletekio av. 3, LT-10257, Vilnius, Lithuania; Institute of Biochemistry, Life Sciences Centre, Vilnius University, Sauletekio av. 7, LT-10257, Vilnius, Lithuania.
| | - Atefeh Shafaat
- Department of Biomedical Science, Faculty of Health and Society, Malmö University, 205 06, Malmö, Sweden; Biofilms - Research Center for Biointerfaces, Malmö University, 205 06, Malmö, Sweden
| | - Dainius Jakubauskas
- Department of Biomedical Science, Faculty of Health and Society, Malmö University, 205 06, Malmö, Sweden; Biofilms - Research Center for Biointerfaces, Malmö University, 205 06, Malmö, Sweden
| | - Jessica Neilands
- Section for Oral Biology and Pathology, Faculty of Odontology, Malmö University, 205 06, Malmö, Sweden
| | - Wanida Laiwattanapaisal
- Centre of Excellence for Biosensors and Bioengineering (CEBB), Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok, 10330, Thailand; Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Patumwan, Bangkok, 10330, Thailand.
| | - Tautgirdas Ruzgas
- Department of Biomedical Science, Faculty of Health and Society, Malmö University, 205 06, Malmö, Sweden; Biofilms - Research Center for Biointerfaces, Malmö University, 205 06, Malmö, Sweden
| |
Collapse
|
16
|
Al-Matarneh CM, Nicolescu A, Marinaş IC, Găboreanu MD, Shova S, Dascălu A, Silion M, Pinteală M. New Library of Iodo-Quinoline Derivatives Obtained by an Alternative Synthetic Pathway and Their Antimicrobial Activity. Molecules 2024; 29:772. [PMID: 38398524 PMCID: PMC10891861 DOI: 10.3390/molecules29040772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Revised: 02/05/2024] [Accepted: 02/06/2024] [Indexed: 02/25/2024] Open
Abstract
6-Iodo-substituted carboxy-quinolines were obtained using a one-pot, three-component method with trifluoroacetic acid as a catalyst under acidic conditions. Iodo-aniline, pyruvic acid and 22 phenyl-substituted aldehydes (we varied the type and number of radicals) or O-heterocycles, resulting in different electronic effects, were the starting components. This approach offers advantages such as rapid response times, cost-effective catalysts, high product yields and efficient purification procedures. A comprehensive investigation was conducted to examine the impact of aldehyde structure on the synthesis pathway. A library of compounds was obtained and characterized by FT-IR, MS, 1H NMR and 13C NMR spectroscopy and single-ray crystal diffractometry. Their antimicrobial activity against S. epidermidis, K. pneumonie and C. parapsilosis was tested in vitro. The effect of iodo-quinoline derivatives on microbial adhesion, the initial stage of microbial biofilm development, was also investigated. This study suggests that carboxy-quinoline derivatives bearing an iodine atom are interesting scaffolds for the development of novel antimicrobial agents.
Collapse
Affiliation(s)
- Cristina Maria Al-Matarneh
- Center of Advanced Research in Bionanoconjugates and Biopolymers, “Petru Poni” Institute of Macromolecular Chemistry of Romanian Academy, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania; (A.D.); (M.P.)
- Research Institute of the University of Bucharest—ICUB, 91-95 Spl. Independentei, 050095 Bucharest, Romania; (I.C.M.); (M.D.G.)
| | - Alina Nicolescu
- NMR Laboratory ”Petru Poni” Institute of Macromolecular Chemistry of Romanian Academy, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania;
| | - Ioana Cristina Marinaş
- Research Institute of the University of Bucharest—ICUB, 91-95 Spl. Independentei, 050095 Bucharest, Romania; (I.C.M.); (M.D.G.)
| | - Mădalina Diana Găboreanu
- Research Institute of the University of Bucharest—ICUB, 91-95 Spl. Independentei, 050095 Bucharest, Romania; (I.C.M.); (M.D.G.)
| | - Sergiu Shova
- Department of Inorganic Polymers ”Petru Poni” Institute of Macromolecular Chemistry of Romanian Academy, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania;
| | - Andrei Dascălu
- Center of Advanced Research in Bionanoconjugates and Biopolymers, “Petru Poni” Institute of Macromolecular Chemistry of Romanian Academy, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania; (A.D.); (M.P.)
| | - Mihaela Silion
- Physics of Polymers and Polymeric Materials Department, “Petru Poni” Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania;
| | - Mariana Pinteală
- Center of Advanced Research in Bionanoconjugates and Biopolymers, “Petru Poni” Institute of Macromolecular Chemistry of Romanian Academy, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania; (A.D.); (M.P.)
| |
Collapse
|
17
|
Abirami G, Alexpandi R, Jayaprakash E, Roshni PS, Ravi AV. Pyrogallol loaded chitosan-based polymeric hydrogel for controlling Acinetobacter baumannii wound infections: Synthesis, characterization, and topical application. Int J Biol Macromol 2024; 259:129161. [PMID: 38181925 DOI: 10.1016/j.ijbiomac.2023.129161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 12/28/2023] [Accepted: 12/29/2023] [Indexed: 01/07/2024]
Abstract
Antibacterial hydrogels have emerged as a promising approach for wound healing, owing to their ability to integrate antibacterial agents into the hydrogel matrix. Benefiting from its remarkable antibacterial and wound-healing attributes, pyrogallol has been introduced into chitosan-gelatin for the inaugural development of an innovative antibacterial polymeric hydrogel tailored for applications in wound healing. Hence, we observed the effectiveness of pyrogallol in inhibiting the growth of A. baumannii, disrupting mature biofilms, and showcasing robust antioxidant activity both in vitro and in vivo. In addition, pyrogallol promoted the migration of human epidermal keratinocytes and exhibited wound healing activity in zebrafish. These findings suggest that pyrogallol holds promise as a therapeutic agent for wound healing. Interestingly, the pyrogallol-loaded chitosan-gelatin (Pyro-CG) hydrogel exhibited enhanced mechanical strength, stability, controlled drug release, biodegradability, antibacterial activity, and biocompatibility. In vivo results established that Pyro-CG hydrogel promotes wound closure and re-epithelialization in A. baumannii-induced wounds in molly fish. Therefore, the prepared Pyro-CG polymeric hydrogel stands poised as a potent and promising agent for wound healing with antibacterial properties. This holds considerable promise for the development of effective therapeutic interventions to address the increasing menace of A. baumannii-induced wound infections.
Collapse
Affiliation(s)
- Gurusamy Abirami
- Lab in Microbiology and Marine Biotechnology, Department of Biotechnology, School of Biological Sciences, Alagappa University, Karaikudi 630 003, India
| | - Rajaiah Alexpandi
- Lab in Microbiology and Marine Biotechnology, Department of Biotechnology, School of Biological Sciences, Alagappa University, Karaikudi 630 003, India; The Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Ministry of Education, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, PR China
| | - Erusappan Jayaprakash
- Lab in Microbiology and Marine Biotechnology, Department of Biotechnology, School of Biological Sciences, Alagappa University, Karaikudi 630 003, India
| | - Prithiviraj Swasthikka Roshni
- Lab in Microbiology and Marine Biotechnology, Department of Biotechnology, School of Biological Sciences, Alagappa University, Karaikudi 630 003, India
| | - Arumugam Veera Ravi
- Lab in Microbiology and Marine Biotechnology, Department of Biotechnology, School of Biological Sciences, Alagappa University, Karaikudi 630 003, India.
| |
Collapse
|
18
|
Brożyna M, Dudek B, Kozłowska W, Malec K, Paleczny J, Detyna J, Fabianowska-Majewska K, Junka A. The chronic wound milieu changes essential oils' antibiofilm activity-an in vitro and larval model study. Sci Rep 2024; 14:2218. [PMID: 38278929 PMCID: PMC10817982 DOI: 10.1038/s41598-024-52424-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Accepted: 01/18/2024] [Indexed: 01/28/2024] Open
Abstract
Essential Oils (EOs) are currently being researched as potential antibiofilm agents to combat infections related to chronic wound biofilms. As documented in the literature, EOs' in vitro antibacterial properties are often assessed using standard microbiological media and conditions that do not accurately reflect the actual environment of a chronic wound. To address this issue, In vitro Wound Milieu (IVWM) medium, which closely resembles the environment of a chronic wound, was applied for culturing S. aureus biofilms (n = 12) in this research. Biofilms cultivated in the standard Tryptic Soy Broth (TSB) medium served as a control for the experiment. Key biofilm features were analyzed and compared. Subsequently, staphylococci were exposed to the activity of thyme or rosemary EOs (T-EO and R-EO, respectively). As proof of concept, the cytotoxicity of T-EO and its antimicrobial in vivo activity were assessed using a G. mellonella larvae model. Key features of biofilm-forming cells were lower in the IVWM than in the TSB medium: biomass (up to 8 times), metabolic activity (up to 9 times), cell number (up to 100 times), and the live/dead cells ratio. Conversely, biofilm thickness was higher (up to 25%) in IVWM. These differences translated into varied responses of the biofilms to EOs exposure. The application of T-EO led to a greater reduction (up to 2 times) in 67% of biofilm-forming strains in IVWM compared to the TSB medium. Conversely, exposure to R-EO resulted in a higher reduction (up to 2.6 times) of 83% of biofilm-forming strains in TSB than in IVWM. The application of T-EO was not only non-toxic to G. mellonella larvae but also increased the survival of larvae infected with staphylococci (from 48 to 85%). Our findings suggest that EOs not only show promise as agents for treating biofilm-related wound infections but also that providing conditions reflecting the specific niche of the human body is of paramount importance in influencing the results obtained. However, before clinical application, challenges related to the methods of assessing their activity, microbial intra-species variability, and different levels of activity of various EOs should be analyzed and standardized.
Collapse
Affiliation(s)
- Malwina Brożyna
- Platform for Unique Models Application, Department of Pharmaceutical Microbiology and Parasitology, Wroclaw Medical University, Wroclaw, Poland.
| | - Bartłomiej Dudek
- Platform for Unique Models Application, Department of Pharmaceutical Microbiology and Parasitology, Wroclaw Medical University, Wroclaw, Poland
| | - Weronika Kozłowska
- Division of Pharmaceutical Biotechnology, Department of Pharmaceutical Biology and Biotechnology, Wroclaw Medical University, Wroclaw, Poland
| | - Katarzyna Malec
- Department of Drug Form Technology, Wroclaw Medical University, Wroclaw, Poland
| | - Justyna Paleczny
- Platform for Unique Models Application, Department of Pharmaceutical Microbiology and Parasitology, Wroclaw Medical University, Wroclaw, Poland
| | - Jerzy Detyna
- Department of Mechanics, Materials and Biomedical Engineering, Wroclaw University of Science and Technology, Wroclaw, Poland
| | | | - Adam Junka
- Platform for Unique Models Application, Department of Pharmaceutical Microbiology and Parasitology, Wroclaw Medical University, Wroclaw, Poland
| |
Collapse
|
19
|
Gutiérrez-Ruíz SC, Cortes H, González-Torres M, Almarhoon ZM, Gürer ES, Sharifi-Rad J, Leyva-Gómez G. Optimize the parameters for the synthesis by the ionic gelation technique, purification, and freeze-drying of chitosan-sodium tripolyphosphate nanoparticles for biomedical purposes. J Biol Eng 2024; 18:12. [PMID: 38273413 PMCID: PMC10811841 DOI: 10.1186/s13036-024-00403-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Accepted: 01/04/2024] [Indexed: 01/27/2024] Open
Abstract
BACKGROUND Polymeric nanoparticles can be used for wound closure and therapeutic compound delivery, among other biomedical applications. Although there are several nanoparticle obtention methods, it is crucial to know the adequate parameters to achieve better results. Therefore, the objective of this study was to optimize the parameters for the synthesis, purification, and freeze-drying of chitosan nanoparticles. We evaluated the conditions of agitation speed, anion addition time, solution pH, and chitosan and sodium tripolyphosphate concentration. RESULTS Chitosan nanoparticles presented an average particle size of 172.8 ± 3.937 nm, PDI of 0.166 ± 0.008, and zeta potential of 25.00 ± 0.79 mV, at the concentration of 0.1% sodium tripolyphosphate and chitosan (pH 5.5), with a dripping time of 2 min at 500 rpm. The most representative factor during nanoparticle fabrication was the pH of the chitosan solution, generating significant changes in particle size and polydispersity index. The observed behavior is attributed to the possible excess of sodium tripolyphosphate during synthesis. We added the surfactants poloxamer 188 and polysorbate 80 to evaluate the stability improvement during purification (centrifugation or dialysis). These surfactants decreased coalescence between nanoparticles, especially during purification. The centrifugation increased the zeta potential to 40.8-56.2 mV values, while the dialyzed samples led to smaller particle sizes (152-184 nm). Finally, freeze-drying of the chitosan nanoparticles proceeded using two cryoprotectants, trehalose and sucrose. Both adequately protected the system during the process, and the sugar concentration depended on the purification process. CONCLUSIONS In Conclusion, we must consider each surfactant's benefits in formulations for selecting the most suitable. Also, it is necessary to do more studies with the molecule to load. At the same time, the use of sucrose and trehalose generates adequate protection against the freeze-drying process, even at a 5% w/v concentration. However, adjusting the percentage concentration by weight must be made to work with the CS-TPP NPs purified by dialysis.
Collapse
Affiliation(s)
| | - Hernán Cortes
- Departamento de Genómica, Laboratorio de Medicina Genómica, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Ciudad de México, Mexico
| | - Maykel González-Torres
- CONACyT-Laboratorio de Biotecnología, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Ciudad de México, 14389, Mexico
| | - Zainab M Almarhoon
- Department of Chemistry, College of Science, King Saud University, P. O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Eda Sönmez Gürer
- Department of Pharmacognosy, Faculty of Pharmacy, Sivas Cumhuriyet University, Sivas, Turkey
| | | | - Gerardo Leyva-Gómez
- Departamento de Farmacia, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México, Mexico.
| |
Collapse
|
20
|
Wang F, Sun Q, Li Y, Xu R, Li R, Wu D, Huang R, Yang Z, Li Y. Hydrogel Encapsulating Wormwood Essential Oil with Broad-spectrum Antibacterial and Immunomodulatory Properties for Infected Diabetic Wound Healing. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2305078. [PMID: 38030556 PMCID: PMC10797468 DOI: 10.1002/advs.202305078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 09/29/2023] [Indexed: 12/01/2023]
Abstract
The integration of hydrogels with bio-friendly functional components through simple and efficient strategies to construct wound dressings with broad-spectrum antibacterial and immunomodulatory properties to promote the healing of infected diabetic wounds is highly desirable but remains a major challenge. Here, wormwood essential oil (WEO) is effectively encapsulated in the hydrogel via an O/W-Pickering emulsion during the polymerization of methacrylic anhydride gelatin (GelMA), acrylamide (AM), and acrylic acid N-hydroxysuccinimide ester (AAc-NHS) to form a multifunctional hydrogel dressing (HD-WEO). Compared with conventional emulsions, Pickering emulsions not only improve the encapsulation stability of the WEO, but also enhance the tensile and swelling properties of hydrogel. The synergistic interaction of WEO's diverse bioactive components provides a broad-spectrum antibacterial activity against S. aureus, E. coli, and MRSA. In addition, the HD-WEO can induce the polarization of macrophages from M1 to M2 phenotype. With these advantages, the broad-spectrum antibacterial and immunomodulatory HD-WEO effectively promotes the collagen deposition and neovascularization, thereby accelerating the healing of MRSA-infected diabetic wounds.
Collapse
Affiliation(s)
- Feng Wang
- Guangdong Cardiovascular InstituteGuangdong Provincial People's HospitalGuangdong Academy of Medical SciencesGuangzhou510080China
- Department of Gastrointestinal SurgeryDepartment of General SurgeryGuangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences)Southern Medical UniversityGuangzhou510080China
- Key Laboratory of Biowaste Resources for Selenium‐Enriched Functional Utilization, College of Petroleum and Chemical EngineeringBeibu Gulf UniversityQinzhou535011China
| | - Qi Sun
- School of MedicineSouth China University of TechnologyGuangzhou510006China
| | - Yang Li
- Guangdong Cardiovascular InstituteGuangdong Provincial People's HospitalGuangdong Academy of Medical SciencesGuangzhou510080China
- Department of Gastrointestinal SurgeryDepartment of General SurgeryGuangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences)Southern Medical UniversityGuangzhou510080China
- School of MedicineSouth China University of TechnologyGuangzhou510006China
| | - Ruijun Xu
- School of MedicineSouth China University of TechnologyGuangzhou510006China
| | - Renjie Li
- Guangdong Cardiovascular InstituteGuangdong Provincial People's HospitalGuangdong Academy of Medical SciencesGuangzhou510080China
- Department of Gastrointestinal SurgeryDepartment of General SurgeryGuangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences)Southern Medical UniversityGuangzhou510080China
| | - Dingcai Wu
- PCFM LabSchool of ChemistrySun Yat‐sen UniversityGuangzhou510006China
- The Eighth Affiliated HospitalSun Yat‐sen UniversityShenzhen518033China
| | - Rongkang Huang
- Department of General Surgery (Colorectal Surgery)Guangdong Institute of GastroenterologyBiomedical Innovation CenterGuangdong Provincial Key Laboratory of Colorectal and Pelvic Floor DiseasesThe Sixth Affiliated HospitalSun Yat‐sen UniversityGuangzhou510655China
| | - Zifeng Yang
- Department of Gastrointestinal SurgeryDepartment of General SurgeryGuangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences)Southern Medical UniversityGuangzhou510080China
| | - Yong Li
- Department of Gastrointestinal SurgeryDepartment of General SurgeryGuangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences)Southern Medical UniversityGuangzhou510080China
| |
Collapse
|
21
|
Ramalingam S, Chandrasekar MJN, Krishnan GGN, Nanjan MJ. Plant-based Natural Products as inhibitors for Efflux Pumps to Reverse Multidrug Resistance in Staphylococcus aureus: A Mini Review. Mini Rev Med Chem 2024; 24:272-288. [PMID: 37038687 DOI: 10.2174/1389557523666230406092128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 02/09/2023] [Accepted: 02/22/2023] [Indexed: 04/12/2023]
Abstract
Wounds provide a favourable site for microbial infection. Wound infection makes the healing more complex and does not proceed in an orchestrated manner leading to the chronic wound. Clinically infected wounds require proper antimicrobial therapy. Broad-spectrum antibiotics are usually prescribed first before going to targeted therapy. The current conventional mode of therapy mainly depends on the use of antibiotics topically or systemically. Repeated and prolonged use of antibiotics, however, leads to multidrug resistance. Staphylococcus aureus is the most common multidrugresistant microorganism found in wounds. It effectively colonizes the wound and produces many toxins, thereby reducing the host immune response and causing recurrent infection, thus making the wound more complex. The overexpression of efflux pumps is one of the major reasons for the emergence of multidrug resistance. Inhibition of efflux pumps is, therefore, a potential strategy to reverse this resistance. The effective therapy to overcome this antibiotic resistance is to use combination therapy, namely the combination of an inhibitor, and a non-antibiotic compound with an antibiotic for their dual function. Many synthetic efflux pump inhibitors to treat wound infections are still under clinical trials. In this connection, several investigations have been carried out on plant-based natural products as multidrug resistance-modifying agents as they are believed to be safe, inexpensive and suitable for chronic wound infections.
Collapse
Affiliation(s)
- Shalini Ramalingam
- Department of Pharmaceutical Chemistry, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Ooty, Nilgiris, Tamil Nadu, 643001, India
| | - Moola Joghee Nanjan Chandrasekar
- School of Life Sciences, JSS Academy of Higher Education & Research (Ooty Campus), Longwood, Mysuru Road, Ooty, The Nilgiris, Tamil Nadu, 643001, India
| | - Ganesh G N Krishnan
- Department of Pharmaceutics, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Ooty, Nilgiris, Tamil Nadu, 643001, India
| | | |
Collapse
|
22
|
Wang X, Liu M, Yu C, Li J, Zhou X. Biofilm formation: mechanistic insights and therapeutic targets. MOLECULAR BIOMEDICINE 2023; 4:49. [PMID: 38097907 PMCID: PMC10721784 DOI: 10.1186/s43556-023-00164-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Accepted: 12/06/2023] [Indexed: 12/18/2023] Open
Abstract
Biofilms are complex multicellular communities formed by bacteria, and their extracellular polymeric substances are observed as surface-attached or non-surface-attached aggregates. Many types of bacterial species found in living hosts or environments can form biofilms. These include pathogenic bacteria such as Pseudomonas, which can act as persistent infectious hosts and are responsible for a wide range of chronic diseases as well as the emergence of antibiotic resistance, thereby making them difficult to eliminate. Pseudomonas aeruginosa has emerged as a model organism for studying biofilm formation. In addition, other Pseudomonas utilize biofilm formation in plant colonization and environmental persistence. Biofilms are effective in aiding bacterial colonization, enhancing bacterial resistance to antimicrobial substances and host immune responses, and facilitating cell‒cell signalling exchanges between community bacteria. The lack of antibiotics targeting biofilms in the drug discovery process indicates the need to design new biofilm inhibitors as antimicrobial drugs using various strategies and targeting different stages of biofilm formation. Growing strategies that have been developed to combat biofilm formation include targeting bacterial enzymes, as well as those involved in the quorum sensing and adhesion pathways. In this review, with Pseudomonas as the primary subject of study, we review and discuss the mechanisms of bacterial biofilm formation and current therapeutic approaches, emphasizing the clinical issues associated with biofilm infections and focusing on current and emerging antibiotic biofilm strategies.
Collapse
Affiliation(s)
- Xinyu Wang
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, Sichuan, China
| | - Ming Liu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, Sichuan, China
| | - Chuanjiang Yu
- Institute for Cancer Genetics, Columbia University, New York, NY, 10032, USA
| | - Jing Li
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, Sichuan, China.
| | - Xikun Zhou
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China.
| |
Collapse
|
23
|
Paleczny J, Brożyna M, Dudek B, Woytoń A, Chodaczek G, Szajnik M, Junka A. Culture Shock: An Investigation into the Tolerance of Pathogenic Biofilms to Antiseptics in Environments Resembling the Chronic Wound Milieu. Int J Mol Sci 2023; 24:17242. [PMID: 38139071 PMCID: PMC10744066 DOI: 10.3390/ijms242417242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 12/04/2023] [Accepted: 12/05/2023] [Indexed: 12/24/2023] Open
Abstract
Credible assessment methods must be applied to evaluate antiseptics' in vitro activity reliably. Studies indicate that the medium for biofilm culturing should resemble the conditions present at the site of infection. We cultured S. aureus, S. epidermidis, P. aeruginosa, C. albicans, and E. coli biofilms in IVWM (In Vitro Wound Milieu)-the medium reflecting wound milieu-and were compared to the ones cultured in the laboratory microbiological Mueller-Hinton (MH) medium. We analyzed and compared crucial biofilm characteristics and treated microbes with polyhexamethylene biguanide hydrochloride (PHMB), povidone-iodine (PVP-I), and super-oxidized solution with hypochlorites (SOHs). Biofilm biomass of S. aureus and S. epidermidis was higher in IVWM than in MH medium. Microbes cultured in IVWM exhibited greater metabolic activity and thickness than in MH medium. Biofilm of the majority of microbial species was more resistant to PHMB and PVP-I in the IVWM than in the MH medium. P. aeruginosa displayed a two-fold lower MBEC value of PHMB in the IVWM than in the MH medium. PHMB was more effective in the IVWM than in the MH medium against S. aureus biofilm cultured on a biocellulose carrier (instead of polystyrene). The applied improvement of the standard in vitro methodology allows us to predict the effects of treatment of non-healing wounds with specific antiseptics.
Collapse
Affiliation(s)
- Justyna Paleczny
- Platform for Unique Models Application, Department of Pharmaceutical Microbiology and Parasitology, Wroclaw Medical University, 50-556 Wroclaw, Poland; (J.P.); (M.B.); (B.D.); (A.W.)
| | - Malwina Brożyna
- Platform for Unique Models Application, Department of Pharmaceutical Microbiology and Parasitology, Wroclaw Medical University, 50-556 Wroclaw, Poland; (J.P.); (M.B.); (B.D.); (A.W.)
| | - Bartłomiej Dudek
- Platform for Unique Models Application, Department of Pharmaceutical Microbiology and Parasitology, Wroclaw Medical University, 50-556 Wroclaw, Poland; (J.P.); (M.B.); (B.D.); (A.W.)
| | - Aleksandra Woytoń
- Platform for Unique Models Application, Department of Pharmaceutical Microbiology and Parasitology, Wroclaw Medical University, 50-556 Wroclaw, Poland; (J.P.); (M.B.); (B.D.); (A.W.)
| | - Grzegorz Chodaczek
- Bioimaging Laboratory, Lukasiewicz Research Network—PORT Polish Center for Technology Development, 54-066 Wroclaw, Poland;
| | - Marta Szajnik
- Faculty of Medicine, Lazarski University, 02-662 Warsaw, Poland;
| | - Adam Junka
- Platform for Unique Models Application, Department of Pharmaceutical Microbiology and Parasitology, Wroclaw Medical University, 50-556 Wroclaw, Poland; (J.P.); (M.B.); (B.D.); (A.W.)
| |
Collapse
|
24
|
Eftimie R, Rolin G, Adebayo OE, Urcun S, Chouly F, Bordas SPA. Modelling Keloids Dynamics: A Brief Review and New Mathematical Perspectives. Bull Math Biol 2023; 85:117. [PMID: 37855947 DOI: 10.1007/s11538-023-01222-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Accepted: 10/02/2023] [Indexed: 10/20/2023]
Abstract
Keloids are fibroproliferative disorders described by excessive growth of fibrotic tissue, which also invades adjacent areas (beyond the original wound borders). Since these disorders are specific to humans (no other animal species naturally develop keloid-like tissue), experimental in vivo/in vitro research has not led to significant advances in this field. One possible approach could be to combine in vitro human models with calibrated in silico mathematical approaches (i.e., models and simulations) to generate new testable biological hypotheses related to biological mechanisms and improved treatments. Because these combined approaches do not really exist for keloid disorders, in this brief review we start by summarising the biology of these disorders, then present various types of mathematical and computational approaches used for related disorders (i.e., wound healing and solid tumours), followed by a discussion of the very few mathematical and computational models published so far to study various inflammatory and mechanical aspects of keloids. We conclude this review by discussing some open problems and mathematical opportunities offered in the context of keloid disorders by such combined in vitro/in silico approaches, and the need for multi-disciplinary research to enable clinical progress.
Collapse
Affiliation(s)
- R Eftimie
- Laboratoire de Mathématiques de Besançon, Université de Franche-Comté, 25000, Besançon, France.
| | - G Rolin
- INSERM CIC-1431, CHU Besançon, F-25000, Besançon, France
- EFS, INSERM, UMR 1098 RIGHT, Université de Franche-Comté, F-25000, Besançon, France
| | - O E Adebayo
- Laboratoire de Mathématiques de Besançon, Université de Franche-Comté, 25000, Besançon, France
| | - S Urcun
- Institute for Computational Engineering, Faculty of Science, Technology and Communication, University of Luxembourg, Esch-sur-Alzette, Luxembourg
| | - F Chouly
- Institut de Mathématiques de Bourgogne, Université de Franche-Comté, 21078, Dijon, France
- Center for Mathematical Modelling and Department of Mathematical Engineering, University of Chile and IRL 2807 - CNRS, Santiago, Chile
- Departamento de Ingeniería Matemática, CI2MA, Universidad de Concepción, Casilla 160-C, Concepción, Chile
| | - S P A Bordas
- Institute for Computational Engineering, Faculty of Science, Technology and Communication, University of Luxembourg, Esch-sur-Alzette, Luxembourg
| |
Collapse
|
25
|
Jacob A, Jones LM, Abdo RJ, Cruz‐Schiavone SF, Skerker R, Caputo WJ, Krehbiel N, Moyer‐Harris AK, McAtee A, Baker I, Gray MD, Rennie MY. Lights, fluorescence, action-Influencing wound treatment plans including debridement of bacteria and biofilms. Int Wound J 2023; 20:3279-3288. [PMID: 37132372 PMCID: PMC10502265 DOI: 10.1111/iwj.14208] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 04/06/2023] [Accepted: 04/12/2023] [Indexed: 05/04/2023] Open
Abstract
High bacterial loads within chronic wounds increase the risk of infection and complication. Detection and localization of bacterial loads through point-of-care fluorescence (FL) imaging can objectively inform and support bacterial treatment decisions. This single time-point, retrospective analysis describes the treatment decisions made on 1000 chronic wounds (DFUs, VLUs, PIs, surgical wounds, burns, and others) at 211 wound-care facilities across 36 US states. Clinical assessment findings and treatment plans derived from them, as well as subsequent FL-imaging (MolecuLight®) findings and any associated treatment plan changes, were recorded for analysis. FL signals indicating elevated bacterial loads were observed in 701 wounds (70.8%), while only 293 (29.6%) showed signs/symptoms of infection. After FL-imaging, treatment plans changed in 528 wounds as follows: more extensive debridement (18.7%), more extensive hygiene (17.2%), FL-targeted debridement (17.2%), new topical therapies (10.1%), new systemic antibiotic prescriptions (9.0%), FL-guided sampling for microbiological analysis (6.2%), and changes in dressing selection (3.2%). These real-world findings of asymptomatic bacterial load/biofilm incidence, and of the frequent treatment plan changes post-imaging, are in accordance with clinical trial findings using this technology. These data, from a range of wound types, facilities, and clinician skill sets, suggest that point-of-care FL-imaging information improves bacterial infection management.
Collapse
|
26
|
Strickland AD, Ozturk M, Conti T, Tabatabaei F. Copper-based dressing: Efficacy in a wound infection of ex vivo human skin. Tissue Cell 2023; 84:102196. [PMID: 37611328 DOI: 10.1016/j.tice.2023.102196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 07/28/2023] [Accepted: 08/07/2023] [Indexed: 08/25/2023]
Abstract
This study aimed to evaluate the wound healing and antibacterial effects of two experimental copper dressings compared to a commercial silver dressing. Burn wounds were created in the ex vivo human skin biopsies, then were infected by Staphylococcus aureus. Tissues were treated with copper dressings, silver dressing, or a dressing without any antibacterial component. An infected wound tissue without treatment was considered as the control group. Three days after treatments, tissues were analyzed by bacterial count and histology staining, while their media was used to assess the expression of cytokines and chemokines. Histology staining confirmed the presence of second-degree burn wounds and colonization of bacteria in the surface and superficial layer of tissues. The results demonstrated a higher antibacterial effect, improved epithelium formation, and decreased wound area in one of the copper dressings compared to other dressings. Markers associated with infection control increased in both the copper and silver-treated groups. The cytokine profiling analysis revealed increased expression of markers related to angiogenesis and anti-inflammatory responses and decreased pro-inflammatory cytokine responses in the infected wound treated with one of the copper dressings. Our results confirmed the efficacy of the experimental copper dressing in reducing bacteria and promoting wound healing.
Collapse
|
27
|
Meng S, Wu H, Xiao D, Lan S, Dong A. Recent advances in bacterial cellulose-based antibacterial composites for infected wound therapy. Carbohydr Polym 2023; 316:121082. [PMID: 37321715 DOI: 10.1016/j.carbpol.2023.121082] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 05/20/2023] [Accepted: 05/30/2023] [Indexed: 06/17/2023]
Abstract
Wound infection arising from pathogenic bacteria brought serious trouble to the patient and medical system. Among various wound dressings that are effective in killing pathogenic bacteria, antimicrobial composites based on bacterial cellulose (BC) are becoming the most popular materials due to their success in eliminating pathogenic bacteria, preventing wound infection, and promoting wound healing. However, as an extracellular natural polymer, BC is not inherently antimicrobial, which means that it must be combined with other antimicrobials to be effective against pathogens. BC has many advantages over other polymers, including nano-structure, significant moisture retention, non-adhesion to the wound surface, which has made it superior to other biopolymers. This review introduces the recent advances in BC-based composites for the treatment of wound infection, including the classification and preparation methods of composites, the mechanism of wound treatment, and commercial application. Moreover, their wound therapy applications include hydrogel dressing, surgical sutures, wound healing bandages, and patches are summarized in detail. Finally, the challenges and future prospects of BC-based antibacterial composites for the treatment of infected wounds are discussed.
Collapse
Affiliation(s)
- Suriguga Meng
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China; Engineering Research Center of Dairy Quality and Safety Control Technology, Ministry of Education, Inner Mongolia University, Hohhot 010021, China
| | - Haixia Wu
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China; Engineering Research Center of Dairy Quality and Safety Control Technology, Ministry of Education, Inner Mongolia University, Hohhot 010021, China
| | - Douxin Xiao
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China; Engineering Research Center of Dairy Quality and Safety Control Technology, Ministry of Education, Inner Mongolia University, Hohhot 010021, China.
| | - Shi Lan
- College of Science, Inner Mongolia Agricultural University, Hohhot 010018, China.
| | - Alideertu Dong
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China; Engineering Research Center of Dairy Quality and Safety Control Technology, Ministry of Education, Inner Mongolia University, Hohhot 010021, China.
| |
Collapse
|
28
|
Tong A, Tong C, Fan J, Shen J, Yin C, Wu Z, Zhang J, Liu B. Prussian blue nano-enzyme-assisted photodynamic therapy effectively eradicates MRSA infection in diabetic mouse skin wounds. Biomater Sci 2023; 11:6342-6356. [PMID: 37581536 DOI: 10.1039/d3bm01039b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/16/2023]
Abstract
Antibiotic therapy can induce the generation of severe bacterial resistance, further challenging the usability of currently available drugs and treatment options. Therefore, it is essential to develop new strategies to effectively eradicate drug-resistant bacteria. Herein, we have reported a combinational strategy for the eradication of drug-resistant bacteria by using chlorin e6 (Ce6) loaded Prussian blue nanoparticles (PB NPs). This nanocomplex showed strong catalase activity and photodynamic properties. In vitro experiments demonstrated that CPB-Ce6 NPs effectively kill MRSA by generating ROS under laser irradiation. Meanwhile, the nano-enzyme activity of CPB NPs can decompose H2O2 in the bacterial microenvironment to upregulate the O2 level, which in turn alleviates hypoxia in the microenvironment and improves the antibacterial effect of PDT. In vivo results demonstrated that CPB-Ce6 NPs with laser irradiation effectively cleared MRSA and promoted infected wound repair in a diabetic mouse model and normal mice through upregulating VEGF. Moreover, CPB-Ce6 NPs showed excellent biosafety profiles in vitro and in vivo. From our point of view, this PDT based on PB NPs with nano-enzyme activity may provide an effective treatment for infections associated with drug-resistant microbes and tissue repair.
Collapse
Affiliation(s)
- Aidi Tong
- School of Medicine, Hunan Normal University, Changsha, 410013, PR China.
| | - Chunyi Tong
- College of Biology, Hunan University, Changsha, 410082, PR China.
| | - Jialong Fan
- College of Biology, Hunan University, Changsha, 410082, PR China.
| | - Jingyi Shen
- School of Medicine, Hunan Normal University, Changsha, 410013, PR China.
| | - Caiyun Yin
- College of Biology, Hunan University, Changsha, 410082, PR China.
| | - Zhou Wu
- College of Biology, Hunan University, Changsha, 410082, PR China.
| | - Jiansong Zhang
- School of Medicine, Hunan Normal University, Changsha, 410013, PR China.
| | - Bin Liu
- College of Biology, Hunan University, Changsha, 410082, PR China.
| |
Collapse
|
29
|
Garg SS, Dubey R, Sharma S, Vyas A, Gupta J. Biological macromolecules-based nanoformulation in improving wound healing and bacterial biofilm-associated infection: A review. Int J Biol Macromol 2023; 247:125636. [PMID: 37392924 DOI: 10.1016/j.ijbiomac.2023.125636] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 06/19/2023] [Accepted: 06/28/2023] [Indexed: 07/03/2023]
Abstract
A chronic wound is a serious complication associated with diabetes mellitus and is difficult to heal due to high glucose levels, oxidative stress, and biofilm-associated microbial infection. The structural complexity of microbial biofilm makes it impossible for antibiotics to penetrate the matrix, hence conventional antibiotic therapies became ineffective in clinical settings. This demonstrates an urgent need to find safer alternatives to reduce the prevalence of chronic wound infection associated with microbial biofilm. A novel approach to address these concerns is to inhibit biofilm formation using biological-macromolecule based nano-delivery system. Higher drug loading efficiency, sustained drug release, enhanced drug stability, and improved bioavailability are advantages of employing nano-drug delivery systems to prevent microbial colonization and biofilm formation in chronic wounds. This review covers the pathogenesis, microbial biofilm formation, and immune response to chronic wounds. Furthermore, we also focus on macromolecule-based nanoparticles as wound healing therapies to reduce the increased mortality associated with chronic wound infections.
Collapse
Affiliation(s)
- Sourbh Suren Garg
- Department of Biochemistry, School of Bioengineering and Biosciences, Lovely Professional University, Punjab, India
| | - Rupal Dubey
- Department of Medical Laboratory Sciences, School of Allied Medical Sciences, Lovely Professional University, Punjab, India
| | - Sandeep Sharma
- Department of Medical Laboratory Sciences, School of Allied Medical Sciences, Lovely Professional University, Punjab, India
| | - Ashish Vyas
- Department of Microbiology, School of Bioengineering and Biosciences, Lovely Professional University, Punjab, India
| | - Jeena Gupta
- Department of Biochemistry, School of Bioengineering and Biosciences, Lovely Professional University, Punjab, India.
| |
Collapse
|
30
|
Holmes Z, Nguyen J, Courtney A, Jobson D, Kelly R. Treatment of severe, refractory pyoderma gangrenosum with infliximab, adalimumab and intravenous immunoglobulin. Australas J Dermatol 2023; 64:433-435. [PMID: 37102460 DOI: 10.1111/ajd.14067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 03/27/2023] [Accepted: 04/19/2023] [Indexed: 04/28/2023]
Affiliation(s)
| | | | | | - Dale Jobson
- St Vincent's Hospital, Fitzroy, Victoria, Australia
- Monash University, Clayton, Victoria, Australia
| | - Robert Kelly
- St Vincent's Hospital, Fitzroy, Victoria, Australia
| |
Collapse
|
31
|
Rancan F, Jurisch J, Hadam S, Vogt A, Blume-Peytavi U, Bayer IS, Contardi M, Schaudinn C. Ciprofloxacin-Loaded Polyvinylpyrrolidone Foils for the Topical Treatment of Wound Infections with Methicillin-Resistant Staphylococcus aureus (MRSA). Pharmaceutics 2023; 15:1876. [PMID: 37514062 PMCID: PMC10385417 DOI: 10.3390/pharmaceutics15071876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 06/23/2023] [Accepted: 06/30/2023] [Indexed: 07/30/2023] Open
Abstract
Bacterial infections are a constant challenge in the management of acute and chronic wounds. Chronic wounds, such as diabetic foot ulcers, have increased significantly in the last few years due to the rise of an aging population. A better understanding of the infectious pathophysiological mechanisms is urgently needed along with new options for the treatment of wound infections and wound-healing disorders. New advances in the preparation of biocompatible dressing materials that can be loaded with antimicrobial drugs may improve the topical treatment of infected wounds. In this study, we investigated the antimicrobial activity of polyvinylpyrrolidone (PVP) foils loaded with ciprofloxacin (Cipro-foils) in the presence of acetic acid as a co-solvent. We used ex vivo human wounds that were infected with two bacterial strains: methicillin-resistant Staphylococcus aureus (MRSA) or Pseudomonas aeruginosa (PAO1). The effectiveness of the treatment was demonstrated by the quantification of the living bacteria extracted from the wound and the detection of released immunological mediators in skin extracts and in the skin culture media. We found that Cipro-foils effectively treated the infection with both PAO1 and MRSA. Other than PAO1, MRSA had no lytic activity toward skin proteins. MRSA infections increased cytokines' expression and release. Interestingly, treatment with Cipro-foils could partially counteract these effects.
Collapse
Affiliation(s)
- Fiorenza Rancan
- Department of Dermatology, Venereology and Allergology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 10117 Berlin, Germany
| | - Jana Jurisch
- Department of Dermatology, Venereology and Allergology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 10117 Berlin, Germany
| | - Sabrina Hadam
- Department of Dermatology, Venereology and Allergology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 10117 Berlin, Germany
| | - Annika Vogt
- Department of Dermatology, Venereology and Allergology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 10117 Berlin, Germany
| | - Ulrike Blume-Peytavi
- Department of Dermatology, Venereology and Allergology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 10117 Berlin, Germany
| | - Ilker S Bayer
- Smart Materials, Istituto Italiano di Tecnologia, 16163 Genova, Italy
| | - Marco Contardi
- Smart Materials, Istituto Italiano di Tecnologia, 16163 Genova, Italy
- Department of Earth and Environmental Sciences (DISAT), University of Milan-Bicocca, Piazza della Scienza, 20126 Milan, Italy
| | - Christoph Schaudinn
- Advanced Light and Electron Microscopy, Zentrum für Biologische Gefahren und Spezielle Pathogene 4, Robert Koch Institute, 13353 Berlin, Germany
| |
Collapse
|
32
|
Piranaghl H, Golmohammadzadeh S, Soheili V, Noghabi ZS, Memar B, Jalali SM, Taherzadeh Z, Fazly Bazzaz BS. The potential therapeutic impact of a topical bacteriophage preparation in treating Pseudomonas aeruginosa-infected burn wounds in mice. Heliyon 2023; 9:e18246. [PMID: 37539104 PMCID: PMC10393627 DOI: 10.1016/j.heliyon.2023.e18246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2022] [Revised: 07/04/2023] [Accepted: 07/12/2023] [Indexed: 08/05/2023] Open
Abstract
Aim This study compared a topical formulation containing lytic phages with a routine antibiotic in the murine model of burn/Pseudomonas aeruginosa infected wound healing. Methods & Materials Isolated and purified lytic bacteriophages from hospital sewage were added to the polyethylene glycol (PEG) based ointment. A second-degree burned wound on the back of twenty-four adult female mice was created. The wounds were infected subcutaneously with 100 μL of 1 × 102-3 CFU/mL P. aeruginosa. After 24 h, mice were randomly assigned to one of four groups: mice received a standard antibiotic (antibiotic-treated group), mice received an ointment without bacteriophage (PEG-based group), mice received a PEG-ointment with bacteriophage (bacteriophage-treated group), or mice received no treatment (untreated-control group). Every two days, the contraction of burned wounds, physical activity, and rectal body temperature were recorded. On day 10, mice were sacrificed, and the wounds were cut off and evaluated histopathologically. Results In ointments containing PEG, bacteriophages were active and stable. The mice receiving bacteriophage and PEG-based ointment had substantially different wound contraction in primary wound healing (P = 0.001). When compared to the control group, the bacteriophage-treated group showed significant variations in wound contraction (P = 0.001). The wound contraction changed significantly between the antibiotic and PEG-based groups (P = 0.002). In all groups, physical activity in mice improved over time, with significant differences (P = 0.001). When the 8th day was compared to the days 2, 4, and 6, significant changes were found (P = 0.001, P = 0.02, and P = 0.02, respectively). Both the positive control and bacteriophage-treated groups showed perfect wound healing histopathologically. However, no significant variations in microscopic histopathological criteria were found between the groups. Conclusion Formulated phage ointment could be a promising approach for treating infected burn wounds infected by P. aeruginosa in mice with no allergic reactions.
Collapse
Affiliation(s)
- Hanieh Piranaghl
- Pharmaceutical Control Department, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Shiva Golmohammadzadeh
- Nanotechnology Research Center, Institute of Pharmaceutical Technology, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Vahid Soheili
- Pharmaceutical Control Department, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Zahra Sabeti Noghabi
- Pharmaceutical Control Department, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
- Department of Biopathology, Faculty of Veterinary Medicine, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Bahram Memar
- Department of Pathology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Seyede Melika Jalali
- Pharmaceutical Control Department, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Zhila Taherzadeh
- Targeted Drug Delivery Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Bibi Sedigheh Fazly Bazzaz
- Pharmaceutical Control Department, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
- Biotechnology Research Center, Institute of Pharmaceutical Technology, Mashhad University of Medical Sciences, Mashhad, Iran
| |
Collapse
|
33
|
Crivello G, Orlandini G, Morena AG, Torchio A, Mattu C, Boffito M, Tzanov T, Ciardelli G. Lignin-Cobalt Nano-Enabled Poly(pseudo)rotaxane Supramolecular Hydrogel for Treating Chronic Wounds. Pharmaceutics 2023; 15:1717. [PMID: 37376166 DOI: 10.3390/pharmaceutics15061717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 06/08/2023] [Accepted: 06/09/2023] [Indexed: 06/29/2023] Open
Abstract
Chronic wounds (CWs) are a growing issue for the health care system. Their treatment requires a synergic approach to reduce both inflammation and the bacterial burden. In this work, a promising system for treating CWs was developed, comprising cobalt-lignin nanoparticles (NPs) embedded in a supramolecular (SM) hydrogel. First, NPs were obtained through cobalt reduction with phenolated lignin, and their antibacterial properties were tested against both Gram-negative and Gram-positive strains. The anti-inflammatory capacity of the NPs was proven through their ability to inhibit myeloperoxidase (MPO) and matrix metalloproteases (MMPs), which are enzymes involved in the inflammatory process and wound chronicity. Then, the NPs were loaded in an SM hydrogel based on a blend of α-cyclodextrin and custom-made poly(ether urethane)s. The nano-enabled hydrogel showed injectability, self-healing properties, and linear release of the loaded cargo. Moreover, the SM hydrogel's characteristics were optimized to absorb proteins when in contact with liquid, suggesting its capacity to uptake harmful enzymes from the wound exudate. These results render the developed multifunctional SM material an interesting candidate for the management of CWs.
Collapse
Affiliation(s)
- Giulia Crivello
- Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
| | - Giuliana Orlandini
- Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
| | - Angela Gala Morena
- Group of Molecular and Industrial Biotechnology, Department of Chemical Engineering, Universitat Politècnica de Catalunya, 08222 Terrassa, Spain
| | - Alessandro Torchio
- Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
| | - Clara Mattu
- Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
| | - Monica Boffito
- Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
| | - Tzanko Tzanov
- Group of Molecular and Industrial Biotechnology, Department of Chemical Engineering, Universitat Politècnica de Catalunya, 08222 Terrassa, Spain
| | - Gianluca Ciardelli
- Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
| |
Collapse
|
34
|
Kielholz T, Rohde F, Jung N, Windbergs M. Bacteriophage-loaded functional nanofibers for treatment of P. aeruginosa and S. aureus wound infections. Sci Rep 2023; 13:8330. [PMID: 37221194 DOI: 10.1038/s41598-023-35364-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 05/17/2023] [Indexed: 05/25/2023] Open
Abstract
The increasing incidence of infected skin wounds poses a major challenge in clinical practice, especially when conventional antibiotic therapy fails. In this context, bacteriophages emerged as promising alternatives for the treatment of antibiotic-resistant bacteria. However, clinical implementation remains hampered by the lack of efficient delivery approaches to infected wound tissue. In this study, bacteriophage-loaded electrospun fiber mats were successfully developed as next-generation wound dressings for the treatment of infected wounds. We employed a coaxial electrospinning approach, creating fibers with a protective polymer shell, enveloping bacteriophages in the core while maintaining their antimicrobial activity. The novel fibers exhibited a reproducible fiber diameter range and morphology, while the mechanical fiber properties were ideal for application onto wounds. Further, immediate release kinetics for the phages were confirmed as well as the biocompatibility of the fibers with human skin cells. Antimicrobial activity was demonstrated against Staphylococcus aureus and Pseudomonas aeruginosa and the core/shell formulation maintained the bacteriophage activity for 4 weeks when stored at - 20 °C. Based on these promising characteristics, our approach holds great potential as a platform technology for the encapsulation of bioactive bacteriophages to enable the translation of phage therapy into clinical application.
Collapse
Affiliation(s)
- Tobias Kielholz
- Institute of Pharmaceutical Technology and Buchmann Institute for Molecular Life Sciences, Goethe University Frankfurt, Max-Von-Laue-Str. 9, 60438, Frankfurt am Main, Germany
| | - Felix Rohde
- Institute of Pharmaceutical Technology and Buchmann Institute for Molecular Life Sciences, Goethe University Frankfurt, Max-Von-Laue-Str. 9, 60438, Frankfurt am Main, Germany
| | - Nathalie Jung
- Institute of Pharmaceutical Technology and Buchmann Institute for Molecular Life Sciences, Goethe University Frankfurt, Max-Von-Laue-Str. 9, 60438, Frankfurt am Main, Germany
| | - Maike Windbergs
- Institute of Pharmaceutical Technology and Buchmann Institute for Molecular Life Sciences, Goethe University Frankfurt, Max-Von-Laue-Str. 9, 60438, Frankfurt am Main, Germany.
| |
Collapse
|
35
|
Papadopoulou V, Sidders AE, Lu KY, Velez AZ, Durham PG, Bui DT, Angeles-Solano M, Dayton PA, Rowe SE. Overcoming biological barriers to improve treatment of a Staphylococcus aureus wound infection. Cell Chem Biol 2023; 30:513-526.e5. [PMID: 37148883 PMCID: PMC10198964 DOI: 10.1016/j.chembiol.2023.04.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 01/19/2023] [Accepted: 04/17/2023] [Indexed: 05/08/2023]
Abstract
Chronic wounds frequently become infected with bacterial biofilms which respond poorly to antibiotic therapy. Aminoglycoside antibiotics are ineffective at treating deep-seated wound infections due to poor drug penetration, poor drug uptake into persister cells, and widespread antibiotic resistance. In this study, we combat the two major barriers to successful aminoglycoside treatment against a biofilm-infected wound: limited antibiotic uptake and limited biofilm penetration. To combat the limited antibiotic uptake, we employ palmitoleic acid, a host-produced monounsaturated fatty acid that perturbs the membrane of gram-positive pathogens and induces gentamicin uptake. This novel drug combination overcomes gentamicin tolerance and resistance in multiple gram-positive wound pathogens. To combat biofilm penetration, we examined the ability of sonobactericide, a non-invasive ultrasound-mediated-drug delivery technology to improve antibiotic efficacy using an in vivo biofilm model. This dual approach dramatically improved antibiotic efficacy against a methicillin-resistant Staphylococcus aureus (MRSA) wound infection in diabetic mice.
Collapse
Affiliation(s)
- Virginie Papadopoulou
- Joint Department of Biomedical Engineering, The University of North Carolina and North Carolina State University, Chapel Hill, NC 27599, USA.
| | - Ashelyn E Sidders
- Department of Microbiology and Immunology, University of North Carolina-Chapel Hill, Chapel Hill, NC 27599, USA
| | - Kuan-Yi Lu
- Department of Microbiology and Immunology, University of North Carolina-Chapel Hill, Chapel Hill, NC 27599, USA
| | - Amanda Z Velez
- Department of Microbiology and Immunology, University of North Carolina-Chapel Hill, Chapel Hill, NC 27599, USA
| | - Phillip G Durham
- Joint Department of Biomedical Engineering, The University of North Carolina and North Carolina State University, Chapel Hill, NC 27599, USA; Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Duyen T Bui
- Department of Microbiology and Immunology, University of North Carolina-Chapel Hill, Chapel Hill, NC 27599, USA
| | - Michelle Angeles-Solano
- Department of Microbiology and Immunology, University of North Carolina-Chapel Hill, Chapel Hill, NC 27599, USA
| | - Paul A Dayton
- Joint Department of Biomedical Engineering, The University of North Carolina and North Carolina State University, Chapel Hill, NC 27599, USA; Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Sarah E Rowe
- Department of Microbiology and Immunology, University of North Carolina-Chapel Hill, Chapel Hill, NC 27599, USA.
| |
Collapse
|
36
|
Mendes AI, Fraga AG, Peixoto MJ, Aroso I, Longatto‐Filho A, Marques AP, Pedrosa J. Gellan gum spongy-like hydrogel-based dual antibiotic therapy for infected diabetic wounds. Bioeng Transl Med 2023; 8:e10504. [PMID: 37206216 PMCID: PMC10189450 DOI: 10.1002/btm2.10504] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 02/15/2023] [Accepted: 02/27/2023] [Indexed: 05/21/2023] Open
Abstract
Diabetic foot infection (DFI) is an important cause of morbidity and mortality. Antibiotics are fundamental for treating DFI, although bacterial biofilm formation and associated pathophysiology can reduce their effectiveness. Additionally, antibiotics are often associated with adverse reactions. Hence, improved antibiotic therapies are required for safer and effective DFI management. On this regard, drug delivery systems (DDSs) constitute a promising strategy. We propose a gellan gum (GG)-based spongy-like hydrogel as a topical and controlled DDS of vancomycin and clindamycin, for an improved dual antibiotic therapy against methicillin-resistant Staphylococcus aureus (MRSA) in DFI. The developed DDS presents suitable features for topical application, while promoting the controlled release of both antibiotics, resulting in a significant reduction of in vitro antibiotic-associated cytotoxicity without compromising antibacterial activity. The therapeutic potential of this DDS was further corroborated in vivo, in a diabetic mouse model of MRSA-infected wounds. A single DDS administration allowed a significant bacterial burden reduction in a short period of time, without exacerbating host inflammatory response. Taken together, these results suggest that the proposed DDS represents a promising strategy for the topical treatment of DFI, potentially overcoming limitations associated with systemic antibiotic administration and minimizing the frequency of administration.
Collapse
Affiliation(s)
- Ana Isabel Mendes
- Life and Health Sciences Research Institute (ICVS)School of MedicineUniversity of MinhoBragaPortugal
- ICVS/3B's–PT Government Associate LaboratoryBraga/GuimarãesPortugal
| | - Alexandra Gabriel Fraga
- Life and Health Sciences Research Institute (ICVS)School of MedicineUniversity of MinhoBragaPortugal
- ICVS/3B's–PT Government Associate LaboratoryBraga/GuimarãesPortugal
| | - Maria João Peixoto
- Life and Health Sciences Research Institute (ICVS)School of MedicineUniversity of MinhoBragaPortugal
- ICVS/3B's–PT Government Associate LaboratoryBraga/GuimarãesPortugal
| | - Ivo Aroso
- ICVS/3B's–PT Government Associate LaboratoryBraga/GuimarãesPortugal
- 3B's Research Group, I3Bs – Research Institute on Biomaterials, Biodegradables and BiomimeticsHeadquarters of the European Institute of Excellence on Tissue Engineering and Regenerative MedicineUniversity of MinhoGuimarãesPortugal
| | - Adhemar Longatto‐Filho
- Life and Health Sciences Research Institute (ICVS)School of MedicineUniversity of MinhoBragaPortugal
- ICVS/3B's–PT Government Associate LaboratoryBraga/GuimarãesPortugal
- Molecular Oncology Research CenterBarretos Cancer HospitalBarretosSão PauloBrazil
- Laboratory of Medical Investigation (LIM) 14Hospital das Clínicas da Faculdade de Medicina da Universidade de São PauloSão PauloBrazil
| | - Alexandra Pinto Marques
- ICVS/3B's–PT Government Associate LaboratoryBraga/GuimarãesPortugal
- 3B's Research Group, I3Bs – Research Institute on Biomaterials, Biodegradables and BiomimeticsHeadquarters of the European Institute of Excellence on Tissue Engineering and Regenerative MedicineUniversity of MinhoGuimarãesPortugal
| | - Jorge Pedrosa
- Life and Health Sciences Research Institute (ICVS)School of MedicineUniversity of MinhoBragaPortugal
- ICVS/3B's–PT Government Associate LaboratoryBraga/GuimarãesPortugal
| |
Collapse
|
37
|
Greene C, Beaman HT, Stinfort D, Ramezani M, Monroe MBB. Antimicrobial PVA Hydrogels with Tunable Mechanical Properties and Antimicrobial Release Profiles. J Funct Biomater 2023; 14:jfb14040234. [PMID: 37103324 PMCID: PMC10146720 DOI: 10.3390/jfb14040234] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 03/24/2023] [Accepted: 04/17/2023] [Indexed: 04/28/2023] Open
Abstract
Hydrogels are broadly employed in wound healing applications due to their high water content and tissue-mimicking mechanical properties. Healing is hindered by infection in many types of wound, including Crohn's fistulas, tunneling wounds that form between different portions of the digestive system in Crohn's disease patients. Owing to the rise of drug-resistant infections, alternate approaches are required to treat wound infections beyond traditional antibiotics. To address this clinical need, we designed a water-responsive shape memory polymer (SMP) hydrogel, with natural antimicrobials in the form of phenolic acids (PAs), for potential use in wound filling and healing. The shape memory properties could allow for implantation in a low-profile shape, followed by expansion and would filling, while the PAs provide localized delivery of antimicrobials. Here, we developed a urethane-crosslinked poly(vinyl alcohol) hydrogel with cinnamic (CA), p-coumaric (PCA), and caffeic (Ca-A) acid chemically or physically incorporated at varied concentrations. We examined the effects of incorporated PAs on antimicrobial, mechanical, and shape memory properties, and on cell viability. Materials with physically incorporated PAs showed improved antibacterial properties with lower biofilm formation on hydrogel surfaces. Both modulus and elongation at break could be increased simultaneously in hydrogels after both forms of PA incorporation. Cellular response in terms of initial viability and growth over time varied based on PA structure and concentration. Shape memory properties were not negatively affected by PA incorporation. These PA-containing hydrogels with antimicrobial properties could provide a new option for wound filling, infection control, and healing. Furthermore, PA content and structure provide novel tools for tuning material properties independently of network chemistry, which could be harnessed in a range of materials systems and biomedical applications.
Collapse
Affiliation(s)
- Caitlyn Greene
- Department of Biomedical and Chemical Engineering, BioInspired Syracuse: Institute for Material and Living Systems, Syracuse University, Syracuse, NY 13244, USA
| | - Henry T Beaman
- Department of Biomedical and Chemical Engineering, BioInspired Syracuse: Institute for Material and Living Systems, Syracuse University, Syracuse, NY 13244, USA
| | - Darnelle Stinfort
- Department of Biomedical and Chemical Engineering, BioInspired Syracuse: Institute for Material and Living Systems, Syracuse University, Syracuse, NY 13244, USA
| | - Maryam Ramezani
- Department of Biomedical and Chemical Engineering, BioInspired Syracuse: Institute for Material and Living Systems, Syracuse University, Syracuse, NY 13244, USA
| | - Mary Beth B Monroe
- Department of Biomedical and Chemical Engineering, BioInspired Syracuse: Institute for Material and Living Systems, Syracuse University, Syracuse, NY 13244, USA
| |
Collapse
|
38
|
Mishra P, Gupta P, Srivastava R, Srivastava AK, Poluri KM, Prasad R. Exploration of Antibiofilm and In Vivo Wound Healing Activity of p-Cymene-Loaded Gellan/PVA Nanofibers. ACS APPLIED BIO MATERIALS 2023; 6:1816-1831. [PMID: 37075306 DOI: 10.1021/acsabm.3c00047] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/21/2023]
Abstract
Wound dressings with outstanding biocompatibility, antimicrobial, and tissue regeneration activities are essential to manage emerging recalcitrant antifungal infections to speed up healing. In this study, we have engineered p-cymene-loaded gellan/PVA nanofibers using electrospinning. Morphological and physicochemical properties of the nanofibers were characterized using a multitude of techniques to validate the successful integration of p-cymene (p-cym). The fabricated nanomaterials exhibited strong antibiofilm activity against Candida albicans and Candida glabrata compared to pure p-cymene. In vitro biocompatibility assay demonstrated that nanofibers did not possess any cytotoxicity to the NIH3T3 cell lines. In vivo, full-thickness excision wound healing study showed that the nanofibers were able to heal skin lesions faster than the conventional clotrimazole gel in 24 days without forming any scar. These findings unraveled p-cymene-loaded gellan gum (GA)/poly(vinyl alcohol) (PVA) nanofibers as an effective biomaterial for cutaneous tissue regeneration.
Collapse
Affiliation(s)
- Purusottam Mishra
- Department of Bioscience and Bioengineering, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
| | - Payal Gupta
- Department of Bioscience and Bioengineering, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
- Department of Biotechnology, Graphic Era University, Clement Town, Dehradun 248002, Uttarakhand, India
| | - Rajnish Srivastava
- Moradabad Educational Trust Group of Institutions, Faculty of Pharmacy, Moradabad 244001, Uttar Pradesh, India
| | - Amit Kumar Srivastava
- Department of Bioscience and Bioengineering, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
| | - Krishna Mohan Poluri
- Department of Bioscience and Bioengineering, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
- Centre for Nanotechnology, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
| | - Ramasare Prasad
- Department of Bioscience and Bioengineering, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
| |
Collapse
|
39
|
Xing C, Zhu H, Dou X, Gao L, Baddi S, Zou Y, Zhao C, Peng Y, Fang Y, Feng CL. Infected Diabetic Wound Regeneration Using Peptide-Modified Chiral Dressing to Target Revascularization. ACS NANO 2023; 17:6275-6291. [PMID: 36946387 DOI: 10.1021/acsnano.2c10039] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Revascularization plays a critical role in the healing of diabetic wounds. Accumulation of advanced glycation end products (AGEs) and refractory multidrug resistant bacterial infection are the two major barriers to revascularization, directly leading to impaired healing of diabetic wounds. Here, an artfully designed chiral gel dressing is fabricated (named as HA-LM2-RMR), which consists of l-phenylalanine and cationic hexapeptide coassembled helical nanofibers cross-linked with hyaluronic acid via hydrogen bonding. This chiral gel possesses abundant chiral and cationic sites, not only effectively reducing AGEs via stereoselective interaction but also specifically killing multidrug resistant bacteria rather than host cells since cationic hexapeptides selectively interact with negatively charged microbial membrane. Surprisingly, the HA-LM2-RMR fibers present an attractive ability to activate sprouted angiogenesis of Human Umbilical Vein Endothelial Cells by upregulating VEGF and OPA1 expression. In comparison with clinical Prontosan Wound Gel, the HA-LM2-RMR gel presents superior healing efficiency in the infected diabetic wound with respect to angiogenesis and re-epithelialization, shortening the healing period from 21 days to 14 days. These findings for chiral wound dressing provide insights for the design and construction of diabetic wound dressings that target revascularization, which holds great potential to be utilized in tissue regenerative medicine.
Collapse
Affiliation(s)
- Chao Xing
- State Key Lab of Metal Matrix Composites, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs School of Pharmacy, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Hanting Zhu
- Department of Burns and Plastic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201900, China
- Institute of Traumatic Medicine, Shanghai Jiao Tong University School of Medicine, Shanghai 201900, China
| | - Xiaoqiu Dou
- State Key Lab of Metal Matrix Composites, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs School of Pharmacy, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Laiben Gao
- State Key Lab of Metal Matrix Composites, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs School of Pharmacy, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Sravan Baddi
- State Key Lab of Metal Matrix Composites, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs School of Pharmacy, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yunqing Zou
- State Key Lab of Metal Matrix Composites, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs School of Pharmacy, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Changli Zhao
- State Key Lab of Metal Matrix Composites, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs School of Pharmacy, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yinbo Peng
- Department of Burns and Plastic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201900, China
- Institute of Traumatic Medicine, Shanghai Jiao Tong University School of Medicine, Shanghai 201900, China
| | - Yong Fang
- Department of Burns and Plastic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201900, China
- Institute of Traumatic Medicine, Shanghai Jiao Tong University School of Medicine, Shanghai 201900, China
| | - Chuan-Liang Feng
- State Key Lab of Metal Matrix Composites, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs School of Pharmacy, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| |
Collapse
|
40
|
Froelich A, Jakubowska E, Wojtyłko M, Jadach B, Gackowski M, Gadziński P, Napierała O, Ravliv Y, Osmałek T. Alginate-Based Materials Loaded with Nanoparticles in Wound Healing. Pharmaceutics 2023; 15:pharmaceutics15041142. [PMID: 37111628 PMCID: PMC10143535 DOI: 10.3390/pharmaceutics15041142] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 03/28/2023] [Accepted: 03/31/2023] [Indexed: 04/08/2023] Open
Abstract
Alginate is a naturally derived polysaccharide widely applied in drug delivery, as well as regenerative medicine, tissue engineering and wound care. Due to its excellent biocompatibility, low toxicity, and the ability to absorb a high amount of exudate, it is widely used in modern wound dressings. Numerous studies indicate that alginate applied in wound care can be enhanced with the incorporation of nanoparticles, revealing additional properties beneficial in the healing process. Among the most extensively explored materials, composite dressings with alginate loaded with antimicrobial inorganic nanoparticles can be mentioned. However, other types of nanoparticles with antibiotics, growth factors, and other active ingredients are also investigated. This review article focuses on the most recent findings regarding novel alginate-based materials loaded with nanoparticles and their applicability as wound dressings, with special attention paid to the materials of potential use in the treatment of chronic wounds.
Collapse
Affiliation(s)
- Anna Froelich
- Chair and Department of Pharmaceutical Technology, Poznan University of Medical Sciences, 6 Grunwaldzka Street, 60-780 Poznań, Poland
| | - Emilia Jakubowska
- Chair and Department of Pharmaceutical Technology, Poznan University of Medical Sciences, 6 Grunwaldzka Street, 60-780 Poznań, Poland
| | - Monika Wojtyłko
- Chair and Department of Pharmaceutical Technology, Poznan University of Medical Sciences, 6 Grunwaldzka Street, 60-780 Poznań, Poland
| | - Barbara Jadach
- Chair and Department of Pharmaceutical Technology, Poznan University of Medical Sciences, 6 Grunwaldzka Street, 60-780 Poznań, Poland
| | - Michał Gackowski
- Chair and Department of Pharmaceutical Technology, Poznan University of Medical Sciences, 6 Grunwaldzka Street, 60-780 Poznań, Poland
| | - Piotr Gadziński
- Chair and Department of Pharmaceutical Technology, Poznan University of Medical Sciences, 6 Grunwaldzka Street, 60-780 Poznań, Poland
| | - Olga Napierała
- Chair and Department of Pharmaceutical Technology, Poznan University of Medical Sciences, 6 Grunwaldzka Street, 60-780 Poznań, Poland
| | - Yulia Ravliv
- Department of Pharmacy Management, Economics and Technology, I. Horbachevsky Ternopil National Medical University, 36 Ruska Street, 46000 Ternopil, Ukraine
| | - Tomasz Osmałek
- Chair and Department of Pharmaceutical Technology, Poznan University of Medical Sciences, 6 Grunwaldzka Street, 60-780 Poznań, Poland
| |
Collapse
|
41
|
Lan Z, Kar R, Chwatko M, Shoga E, Cosgriff-Hernandez E. High porosity PEG-based hydrogel foams with self-tuning moisture balance as chronic wound dressings. J Biomed Mater Res A 2023; 111:465-477. [PMID: 36606332 DOI: 10.1002/jbm.a.37498] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 12/21/2022] [Accepted: 12/30/2022] [Indexed: 01/07/2023]
Abstract
A major challenge in chronic wound treatment is maintaining an appropriate wound moisture balance throughout the healing process. Wound dehydration hinders wound healing due to impeded molecule transport and cell migration with associated tissue necrosis. In contrast, wounds that produce excess fluid contain high levels of reactive oxygen species and matrix metalloproteases that impede cell recruitment, extracellular matrix reconstruction, and angiogenesis. Dressings are currently selected based on the relative amount of wound exudate with no universal dressing available that can maintain appropriate wound moisture balance to enhance healing. This work aimed to develop a high porosity poly(ethylene glycol) diacrylate hydrogel foam that can both rapidly remove exudate and provide self-tuning moisture control to prevent wound dehydration. A custom foaming device was used to vary hydrogel foam porosity from 25% to 75% by adjusting the initial air-to-solution volume ratio. Hydrogel foams demonstrated substantial improvements in water uptake volume and rate as compared to bulk hydrogels while maintaining similar hydration benefits with slow dehydration rates. The hydrogel foam with the highest porosity (~75%) demonstrated the greatest water uptake and rate, which outperformed commercial dressing products, Curafoam® and Silvercel®, in water absorption, moisture retention, and exudate management. Investigation of the water vapor transmission rates of each dressing at varied hydration levels was characterized and demonstrated the dynamic moisture-controlling capability of the hydrogel foam dressing. Overall, the self-tuning moisture control of this hydrogel foam dressing holds great promise to improve healing outcomes for both dry and exudative chronic wounds.
Collapse
Affiliation(s)
- Ziyang Lan
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, Texas, USA
| | - Ronit Kar
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, Texas, USA
| | - Malgorzata Chwatko
- Department of Chemical and Materials Engineering, University of Kentucky, Lexington, Kentucky, USA
| | - Erik Shoga
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, Texas, USA
| | | |
Collapse
|
42
|
Han Z, Yuan M, Liu L, Zhang K, Zhao B, He B, Liang Y, Li F. pH-Responsive wound dressings: advances and prospects. NANOSCALE HORIZONS 2023; 8:422-440. [PMID: 36852666 DOI: 10.1039/d2nh00574c] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Wound healing is a complex and dynamic process, in which the pH value plays an important role in reflecting the wound status. Wound dressings are materials that are able to accelerate the healing process. Among the multifunctional advanced wound dressings developed in recent years, pH-responsive wound dressings, especially hydrogels, show great potential owing to their unique properties of adjusting their functions according to the wound conditions, thereby allowing the wound to heal in a regulated manner. However, a comprehensive review of pH-responsive wound dressings is lacking. This review summarizes the design strategies and advanced functions of pH-responsive hydrogel wound dressings, including their excellent antibacterial properties and significant pro-healing abilities. Other advanced pH-responsive materials, such as nanofibers, composite films, nanoparticle clusters, and microneedles, are also classified and discussed. Next, the pH-monitoring functions of pH-responsive wound dressings and the related pH indicators are summarized in detail. Finally, the achievements, challenges, and future development trends of pH-responsive wound dressings are discussed.
Collapse
Affiliation(s)
- Zeyu Han
- Department of Oral Implantology, The Affiliated Hospital of Qingdao University, Qingdao 266000, China.
- School of Stomatology, Qingdao University, Qingdao 266000, China
| | - Mujie Yuan
- Department of Oral Implantology, The Affiliated Hospital of Qingdao University, Qingdao 266000, China.
- School of Stomatology, Qingdao University, Qingdao 266000, China
| | - Lubin Liu
- School of Stomatology, Qingdao University, Qingdao 266000, China
| | - Kaiyue Zhang
- Department of Oral Implantology, The Affiliated Hospital of Qingdao University, Qingdao 266000, China.
- School of Stomatology, Qingdao University, Qingdao 266000, China
| | - Baodong Zhao
- Department of Oral Implantology, The Affiliated Hospital of Qingdao University, Qingdao 266000, China.
- School of Stomatology, Qingdao University, Qingdao 266000, China
| | - Bin He
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China
| | - Yan Liang
- Department of Pharmaceutics, School of Pharmacy, Qingdao University, Qingdao 266000, China.
| | - Fan Li
- Department of Oral Implantology, The Affiliated Hospital of Qingdao University, Qingdao 266000, China.
- School of Stomatology, Qingdao University, Qingdao 266000, China
| |
Collapse
|
43
|
Hu Z, Liu D, Wang M, Yu C, Han Z, Xu M, Yue W, Nie G. β-Alanine enhancing the crosslink of chitosan/poly-(γ-glutamic acid) hydrogel for a potential alkaline-adapted wound dressing. Int J Biol Macromol 2023; 231:123157. [PMID: 36649867 DOI: 10.1016/j.ijbiomac.2023.123157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Revised: 12/23/2022] [Accepted: 01/02/2023] [Indexed: 01/15/2023]
Abstract
Tiny crosslink in chitosan (CS)/poly-(γ-glutamic acid) (γ-PGA) hydrogel leads to some disadvantages including low mechanical strength and high swelling. To enhance the crosslink of CS/γ-PGA hydrogel, amino acid (AA) was introduced to remove the drawbacks. The results indicated that AA can dramatically increase the crosslink and mechanical properties of CS/γ-PGA hydrogel, and AA chain length and concentration have a drastic effect on them. Particularly, 0.5 % β-Alanine (β-Ala) decreased the hydrogel by 70 % in porosity, 52 % in water solubility, and 30 % in swelling, but increased by 2.2-fold in elastic modulus, 2.08-fold in stress, and 1.53-fold in water retention. The porosity of the hydrogel correlates positively with the elastic modulus but negatively with the crosslinking degree. The effect of pH on CS/β-Ala/γ-PGA hydrogel was investigated in the load and release of benzalkonium chlorides (BAC). β-Ala strengthened pH response of the hydrogel in BAC load and release. The loading capacity increased with pH value, and 0.5 % β-Ala increased the hydrogel by 1.25-fold in the release capacity in alkaline environment, suggesting a good buffering effect of β-Ala on pH variation to accelerate the transportation of BAC. CS/β-Ala/γ-PGA hydrogel will be competently applied as a potential material for wound dressing in alkaline environment.
Collapse
Affiliation(s)
- Ziwei Hu
- College of biological and food engineering, Anhui Polytechnic University, 241000 Wuhu, China
| | - Dandan Liu
- College of biological and food engineering, Anhui Polytechnic University, 241000 Wuhu, China
| | - Mengmeng Wang
- College of biological and food engineering, Anhui Polytechnic University, 241000 Wuhu, China
| | - Chenrui Yu
- College of biological and food engineering, Anhui Polytechnic University, 241000 Wuhu, China
| | - Zhenxing Han
- College of biological and food engineering, Anhui Polytechnic University, 241000 Wuhu, China
| | - Maodong Xu
- School of chemical and environmental engineering, Anhui Polytechnic University, 241000 Wuhu, China
| | - Wenjin Yue
- School of chemical and environmental engineering, Anhui Polytechnic University, 241000 Wuhu, China.
| | - Guangjun Nie
- College of biological and food engineering, Anhui Polytechnic University, 241000 Wuhu, China.
| |
Collapse
|
44
|
Xu D, Zhu W, Ding C, Mei J, Zhou J, Cheng T, Guo G, Zhang X. Self-Homeostasis Immunoregulatory Strategy for Implant-Related Infections through Remodeling Redox Balance. ACS NANO 2023; 17:4574-4590. [PMID: 36811805 DOI: 10.1021/acsnano.2c10660] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Implant-related infections (IRIs) are catastrophic complications after orthopedic surgery. Excess reactive oxygen species (ROS) accumulated in IRIs create a redox-imbalanced microenvironment around the implant, which severely limits the curing of IRIs by inducing biofilm formation and immune disorders. However, current therapeutic strategies commonly eliminate infection utilizing the explosive generation of ROS, which exacerbates the redox imbalance, aggravating immune disorders and promoting infection chronicity. Herein, a self-homeostasis immunoregulatory strategy based on a luteolin (Lut)-loaded copper (Cu2+)-doped hollow mesoporous organosilica nanoparticle system (Lut@Cu-HN) is designed to cure IRIs by remodeling the redox balance. In the acidic infection environment, Lut@Cu-HN is continuously degraded to release Lut and Cu2+. As both an antibacterial and immunomodulatory agent, Cu2+ kills bacteria directly and promotes macrophage pro-inflammatory phenotype polarization to activate the antibacterial immune response. Simultaneously, Lut scavenges excessive ROS to prevent the Cu2+-exacerbated redox imbalance from impairing macrophage activity and function, thus reducing Cu2+ immunotoxicity. The synergistic effect of Lut and Cu2+ confers excellent antibacterial and immunomodulatory properties to Lut@Cu-HN. As demonstrated in vitro and in vivo, Lut@Cu-HN self-regulates immune homeostasis through redox balance remodeling, ultimately facilitating IRI eradication and tissue regeneration.
Collapse
Affiliation(s)
- Dongdong Xu
- Department of Orthopedics, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai Jiao Tong University, Shanghai 200233, People's Republic of China
| | - Wanbo Zhu
- Department of Orthopedics, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai Jiao Tong University, Shanghai 200233, People's Republic of China
- Department of Orthopedics, The First Affiliated Hospital of USTC, University of Science and Technology of China, Hefei, Anhui 230001, People's Republic of China
| | - Cheng Ding
- Department of Orthopedics, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai Jiao Tong University, Shanghai 200233, People's Republic of China
| | - Jiawei Mei
- Department of Orthopedics, The First Affiliated Hospital of USTC, University of Science and Technology of China, Hefei, Anhui 230001, People's Republic of China
| | - Jun Zhou
- Department of Orthopedics, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai Jiao Tong University, Shanghai 200233, People's Republic of China
| | - Tao Cheng
- Department of Orthopedics, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai Jiao Tong University, Shanghai 200233, People's Republic of China
| | - Geyong Guo
- Department of Orthopedics, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai Jiao Tong University, Shanghai 200233, People's Republic of China
| | - Xianlong Zhang
- Department of Orthopedics, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai Jiao Tong University, Shanghai 200233, People's Republic of China
| |
Collapse
|
45
|
Hwang J, Huang H, Sullivan MO, Kiick KL. Controlled Delivery of Vancomycin from Collagen-tethered Peptide Vehicles for the Treatment of Wound Infections. Mol Pharm 2023; 20:1696-1708. [PMID: 36707500 PMCID: PMC10197141 DOI: 10.1021/acs.molpharmaceut.2c00898] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Despite the great promise of antibiotic therapy in wound infections, antibiotic resistance stemming from frequent dosing diminishes drug efficacy and contributes to recurrent infection. To identify improvements in antibiotic therapies, new antibiotic delivery systems that maximize pharmacological activity and minimize side effects are needed. In this study, we developed elastin-like peptide and collagen-like peptide nanovesicles (ECnVs) tethered to collagen-containing matrices to control vancomycin delivery and provide extended antibacterial effects against methicillin-resistant Staphylococcus aureus (MRSA). We observed that ECnVs showed enhanced entrapment efficacy of vancomycin by 3-fold as compared to liposome formulations. Additionally, ECnVs enabled the controlled release of vancomycin at a constant rate with zero-order kinetics, whereas liposomes exhibited first-order release kinetics. Moreover, ECnVs could be retained on both collagen-fibrin (co-gel) matrices and collagen-only matrices, with differential retention on the two biomaterials resulting in different local concentrations of released vancomycin. Overall, the biphasic release profiles of vancomycin from ECnVs/co-gel and ECnVs/collagen more effectively inhibited the growth of MRSA for 18 and 24 h, respectively, even after repeated bacterial inoculation, as compared to matrices containing free vancomycin, which just delayed the growth of MRSA. Thus, this newly developed antibiotic delivery system exhibited distinct advantages for controlled vancomycin delivery and prolonged antibacterial activity relevant to the treatment of wound infections.
Collapse
Affiliation(s)
- Jeongmin Hwang
- Department of Biomedical Engineering, University of Delaware, Newark, DE, 19713, USA
| | - Haofu Huang
- Department of Materials Science and Engineering, University of Delaware, Newark, DE, 19716, USA
| | - Millicent O. Sullivan
- Department of Biomedical Engineering, University of Delaware, Newark, DE, 19713, USA
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, DE, 19716, USA
| | - Kristi L. Kiick
- Department of Biomedical Engineering, University of Delaware, Newark, DE, 19713, USA
- Department of Materials Science and Engineering, University of Delaware, Newark, DE, 19716, USA
| |
Collapse
|
46
|
Mi P, Liu JL, Qi BP, Wei BM, Xu CZ, Zhu L. Stem cell-derived exosomes for chronic wound repair. Cell Tissue Res 2023; 391:419-423. [PMID: 36705748 DOI: 10.1007/s00441-023-03742-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Accepted: 01/18/2023] [Indexed: 01/28/2023]
Abstract
Stem cells possess the capability of self-renewal and multipotency, which endows them with great application potential in wound repair fields. Yet, several problems including immune concerns, ethical debates, and oncogenicity impede the broad and deep advance of stem cell-based products. Recently, owing to their abundant resources, excellent biocompatibility, and ease of being engineered, stem cell-derived exosomes were proved to be promising nanomedicine for curing chronic wounds. What is more, stem cell-derived exosomes are almost the mini record of their maternal cells, which even equipped them with the unique characteristics of stem cells. Chronic wound healing efficacy is dominated by several complicated factors, especially the excessive inflammation conditions and impaired vessels. Therefore, this review tries to concentrate on the current advances of stem cell-derived exosomes for reducing inflammation and promoting angiogenesis in chronic wound healing processes. Last but not least, the existing limitations and future perspectives of stem cell-derived exosomes for chronic wound treatment are also outlined.
Collapse
Affiliation(s)
- Peng Mi
- School of Chemistry and Environmental Engineering, Wuhan Polytechnic University, Changqing Garden, Wuhan, 430023, Hubei, China
| | - Jia-Lin Liu
- School of Chemistry and Environmental Engineering, Wuhan Polytechnic University, Changqing Garden, Wuhan, 430023, Hubei, China
| | - Bao-Ping Qi
- Hubei Provincial Key Laboratory of Occurrence and Intervention of Rheumatic Diseases, Hubei Minzu University, Enshi, 445000, Hubei, China. .,School of Chemistry and Environmental Engineering, Hubei Minzu University, Xueyuan Road, Enshi, 445000, Hubei, China.
| | - Ben-Mei Wei
- School of Chemistry and Environmental Engineering, Wuhan Polytechnic University, Changqing Garden, Wuhan, 430023, Hubei, China
| | - Cheng-Zhi Xu
- School of Chemistry and Environmental Engineering, Wuhan Polytechnic University, Changqing Garden, Wuhan, 430023, Hubei, China
| | - Lian Zhu
- School of Chemistry and Environmental Engineering, Wuhan Polytechnic University, Changqing Garden, Wuhan, 430023, Hubei, China.
| |
Collapse
|
47
|
Ousey K, Ovens L. Comparing methods of debridement for removing biofilm in hard-to-heal wounds. J Wound Care 2023; 32:S4-S10. [PMID: 36971485 DOI: 10.12968/jowc.2023.32.sup3b.s4] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
Affiliation(s)
- Karen Ousey
- Professor and Director of the Institute of Skin Integrity and Infection Prevention, University of Huddersfield
| | - Liz Ovens
- Independent Tissue Viability Specialist Nurse
| |
Collapse
|
48
|
An Overview on Wound Dressings and Sutures Fabricated by Electrospinning. BIOTECHNOL BIOPROC E 2023. [DOI: 10.1007/s12257-021-0364-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
|
49
|
Eskilson O, Zattarin E, Berglund L, Oksman K, Hanna K, Rakar J, Sivlér P, Skog M, Rinklake I, Shamasha R, Sotra Z, Starkenberg A, Odén M, Wiman E, Khalaf H, Bengtsson T, Junker JP, Selegård R, Björk EM, Aili D. Nanocellulose composite wound dressings for real-time pH wound monitoring. Mater Today Bio 2023; 19:100574. [PMID: 36852226 PMCID: PMC9958357 DOI: 10.1016/j.mtbio.2023.100574] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 01/30/2023] [Accepted: 02/01/2023] [Indexed: 02/08/2023] Open
Abstract
The skin is the largest organ of the human body. Wounds disrupt the functions of the skin and can have catastrophic consequences for an individual resulting in significant morbidity and mortality. Wound infections are common and can substantially delay healing and can result in non-healing wounds and sepsis. Early diagnosis and treatment of infection reduce risk of complications and support wound healing. Methods for monitoring of wound pH can facilitate early detection of infection. Here we show a novel strategy for integrating pH sensing capabilities in state-of-the-art hydrogel-based wound dressings fabricated from bacterial nanocellulose (BC). A high surface area material was developed by self-assembly of mesoporous silica nanoparticles (MSNs) in BC. By encapsulating a pH-responsive dye in the MSNs, wound dressings for continuous pH sensing with spatiotemporal resolution were developed. The pH responsive BC-based nanocomposites demonstrated excellent wound dressing properties, with respect to conformability, mechanical properties, and water vapor transmission rate. In addition to facilitating rapid colorimetric assessment of wound pH, this strategy for generating functional BC-MSN nanocomposites can be further be adapted for encapsulation and release of bioactive compounds for treatment of hard-to-heal wounds, enabling development of novel wound care materials.
Collapse
Affiliation(s)
- Olof Eskilson
- Laboratory of Molecular Materials, Division of Biophysics and Bioengineering, Department of Physics, Chemistry and Biology, Linköping University, SE-581 83, Linköping, Sweden
| | - Elisa Zattarin
- Laboratory of Molecular Materials, Division of Biophysics and Bioengineering, Department of Physics, Chemistry and Biology, Linköping University, SE-581 83, Linköping, Sweden
| | - Linn Berglund
- Division of Materials Science, Department of Engineering Sciences and Mathematics, Luleå University of Technology, SE-971 87, Luleå, Sweden
| | - Kristiina Oksman
- Division of Materials Science, Department of Engineering Sciences and Mathematics, Luleå University of Technology, SE-971 87, Luleå, Sweden
| | - Kristina Hanna
- Center for Disaster Medicine and Traumatology, Department of Biomedical and Clinical Sciences, Linköping University, SE-581 85, Linköping, Sweden
| | - Jonathan Rakar
- Center for Disaster Medicine and Traumatology, Department of Biomedical and Clinical Sciences, Linköping University, SE-581 85, Linköping, Sweden
| | - Petter Sivlér
- Laboratory of Molecular Materials, Division of Biophysics and Bioengineering, Department of Physics, Chemistry and Biology, Linköping University, SE-581 83, Linköping, Sweden
| | - Mårten Skog
- Laboratory of Molecular Materials, Division of Biophysics and Bioengineering, Department of Physics, Chemistry and Biology, Linköping University, SE-581 83, Linköping, Sweden
| | - Ivana Rinklake
- Center for Disaster Medicine and Traumatology, Department of Biomedical and Clinical Sciences, Linköping University, SE-581 85, Linköping, Sweden
| | - Rozalin Shamasha
- Center for Disaster Medicine and Traumatology, Department of Biomedical and Clinical Sciences, Linköping University, SE-581 85, Linköping, Sweden
| | - Zeljana Sotra
- Center for Disaster Medicine and Traumatology, Department of Biomedical and Clinical Sciences, Linköping University, SE-581 85, Linköping, Sweden
| | - Annika Starkenberg
- Center for Disaster Medicine and Traumatology, Department of Biomedical and Clinical Sciences, Linköping University, SE-581 85, Linköping, Sweden
| | - Magnus Odén
- Division of Nanostructured Materials, Department of Physics, Chemistry and Biology (IFM), Linköping University, SE-58183, Linköping, Sweden
| | - Emanuel Wiman
- Cardiovascular Research Centre, School of Medical Sciences, Örebro University, SE-70362, Örebro, Sweden
| | - Hazem Khalaf
- Cardiovascular Research Centre, School of Medical Sciences, Örebro University, SE-70362, Örebro, Sweden
| | - Torbjörn Bengtsson
- Cardiovascular Research Centre, School of Medical Sciences, Örebro University, SE-70362, Örebro, Sweden
| | - Johan P.E. Junker
- Center for Disaster Medicine and Traumatology, Department of Biomedical and Clinical Sciences, Linköping University, SE-581 85, Linköping, Sweden
| | - Robert Selegård
- Laboratory of Molecular Materials, Division of Biophysics and Bioengineering, Department of Physics, Chemistry and Biology, Linköping University, SE-581 83, Linköping, Sweden
| | - Emma M. Björk
- Division of Nanostructured Materials, Department of Physics, Chemistry and Biology (IFM), Linköping University, SE-58183, Linköping, Sweden
| | - Daniel Aili
- Laboratory of Molecular Materials, Division of Biophysics and Bioengineering, Department of Physics, Chemistry and Biology, Linköping University, SE-581 83, Linköping, Sweden,Corresponding author.
| |
Collapse
|
50
|
Biofilms in Chronic Wound Infections: Innovative Antimicrobial Approaches Using the In Vitro Lubbock Chronic Wound Biofilm Model. Int J Mol Sci 2023; 24:ijms24021004. [PMID: 36674518 PMCID: PMC9862456 DOI: 10.3390/ijms24021004] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 12/23/2022] [Accepted: 12/27/2022] [Indexed: 01/06/2023] Open
Abstract
Chronic wounds have harmful effects on both patients and healthcare systems. Wound chronicity is attributed to an impaired healing process due to several host and local factors that affect healing pathways. The resulting ulcers contain a wide variety of microorganisms that are mostly resistant to antimicrobials and possess the ability to form mono/poly-microbial biofilms. The search for new, effective and safe compounds to handle chronic wounds has come a long way throughout the history of medicine, which has included several studies and trials of conventional treatments. Treatments focus on fighting the microbial colonization that develops in the wound by multidrug resistant pathogens. The development of molecular medicine, especially in antibacterial agents, needs an in vitro model similar to the in vivo chronic wound environment to evaluate the efficacy of antimicrobial agents. The Lubbock chronic wound biofilm (LCWB) model is an in vitro model developed to mimic the pathogen colonization and the biofilm formation of a real chronic wound, and it is suitable to screen the antibacterial activity of innovative compounds. In this review, we focused on the characteristics of chronic wound biofilms and the contribution of the LCWB model both to the study of wound poly-microbial biofilms and as a model for novel treatment strategies.
Collapse
|