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Banerjee A, Singh P, Sheikh PA, Kumar A, Koul V, Bhattacharyya J. A multifunctional silk-hyaluronic acid self-healing hydrogel laden with alternatively activated macrophage-derived exosomes reshape microenvironment of diabetic wound and accelerate healing. Int J Biol Macromol 2024; 270:132384. [PMID: 38754682 DOI: 10.1016/j.ijbiomac.2024.132384] [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: 01/25/2024] [Revised: 04/14/2024] [Accepted: 05/13/2024] [Indexed: 05/18/2024]
Abstract
The impairment of phenotype switching of pro-inflammatory M1 to pro-healing M2 macrophage induced by hyperglycemic microenvironment often elevates oxidative stress, impairs angiogenesis, and leads to chronic non-healing wounds in diabetic patients. Administration of M2 macrophage-derived exosomes (M2Exo) at wound site is known to polarize M1 to M2 macrophage and can accelerate wound healing by enhancing collagen deposition, angiogenesis, and re-epithelialization. In the present study, M2Exo were conjugated with oxidized hyaluronic acid and mixed with PEGylated silk fibroin to develop self-healing Exo-gel to achieve an efficient therapy for diabetic wounds. Exo-gel depicted porous networked morphology with self-healing and excellent water retention behaviour. Fibroblast cells treated with Exo-gel showed significant uptake of M2Exo that increased their proliferation and migration in vitro. Interestingly, in a diabetic wound model of wistar rats, Exo-gel treatment induced 75 % wound closure within 7 days with complete epithelial layer regeneration by modulating cytokine levels, stimulating fibroblast-keratinocyte interaction and migration, angiogenesis, and organized collagen deposition. Taken together, this study suggests that Exo-gel depict properties of an excellent wound healing matrix and can be used as a therapeutic alternative to treat chronic non-healing diabetic wounds.
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Affiliation(s)
- Ahana Banerjee
- Centre for Biomedical Engineering, Indian Institute of Technology Delhi, New Delhi-110016, India; Department of Biomedical Engineering, All India Institute of Medical Science, Delhi, New Delhi-110029, India
| | - Prerna Singh
- Department of Biological Sciences and Bioengineering, Indian Institute of Technology Kanpur, Kalyanpur, Kanpur, Uttar Pradesh-208016, India; Centre for Environmental Science and Engineering, Indian Institute of Technology Kanpur, Kalyanpur, Kanpur, Uttar Pradesh-208016, India
| | - Parvaiz A Sheikh
- Centre for Biomedical Engineering, Indian Institute of Technology Delhi, New Delhi-110016, India
| | - Ashok Kumar
- Department of Biological Sciences and Bioengineering, Indian Institute of Technology Kanpur, Kalyanpur, Kanpur, Uttar Pradesh-208016, India; Centre for Environmental Science and Engineering, Indian Institute of Technology Kanpur, Kalyanpur, Kanpur, Uttar Pradesh-208016, India; The Mehta Family Centre for Engineering in Medicine, Indian Institute of Technology Kanpur, Kalyanpur, Kanpur, Uttar Pradesh-208016, India; Centre of Excellence for Orthopedics and Prosthetics, Indian Institute of Technology Kanpur, Kalyanpur, Kanpur, Uttar Pradesh-208016, India; Gangwal School of Medical Sciences and Technology, Indian Institute of Technology Kanpur, Kalyanpur, Kanpur, Uttar Pradesh-208016, India
| | - Veena Koul
- Centre for Biomedical Engineering, Indian Institute of Technology Delhi, New Delhi-110016, India; Department of Biomedical Engineering, All India Institute of Medical Science, Delhi, New Delhi-110029, India
| | - Jayanta Bhattacharyya
- Centre for Biomedical Engineering, Indian Institute of Technology Delhi, New Delhi-110016, India; Department of Biomedical Engineering, All India Institute of Medical Science, Delhi, New Delhi-110029, India.
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Orfali R, Ghaffar S, AlAjlan L, Perveen S, Al-Turki E, Ameen F. Diabetes-related lower limb wounds: Antibiotic susceptibility pattern and biofilm formation. Saudi Pharm J 2024; 32:102069. [PMID: 38681738 PMCID: PMC11046075 DOI: 10.1016/j.jsps.2024.102069] [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: 03/01/2024] [Accepted: 04/13/2024] [Indexed: 05/01/2024] Open
Abstract
The expeditious incidence of diabetes mellitus in Riyadh, Saudi Arabia, there is a significant increase in the total number of people with diabetic foot ulcers. For diabetic lower limb wound infections (DLWs) to be effectively treated, information on the prevalence of bacteria that cause in this region as well as their patterns of antibiotic resistance is significant. Growing evidence indicates that biofilm formers are present in chronic DFU and that these biofilm formers promote the emergence of multi-drug antibiotic resistant (MDR) strains and therapeutic rejection. The current study targeted to isolate bacteria from wounds caused by diabetes specifically at hospitals in Riyadh and assess the bacterium's resistance to antibiotics and propensity to develop biofilms. Totally 63 pathogenic microbes were identified from 70 patients suffering from DFU. Sixteen (25.4%) of the 63 bacterial strains were gram-positive, and 47 (74.6%) were gram-negative. Most of the gram-negative bacteria were resistant to tigecycline, nitrofurantoin, ampicillin, amoxicillin, cefalotin, and cefoxitin. Several gram-negative bacteria are susceptible to piperacillin, meropenem, amikacin, gentamicin, imipenem, ciprofloxacin, and trimethoprim. The most significant antibiotic that demonstrated 100% susceptibility to all pathogens was meropenem. Serratia marcescens and Staphylococcus aureus were shown to have significant biofilm formers. MDR bacterial strains comprised about 87.5% of the biofilm former strains. To the best of our knowledge, Riyadh, Saudi Arabia is the first region where Serratia marcescens was the most common bacteria from DFU infections. Our research findings would deliver information on evidence-based alternative strategies to develop effective treatment approaches for DFU treatment.
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Affiliation(s)
- Raha Orfali
- Department of Pharmacognosy, College of Pharmacy, King Saud University, PO Box 2457, Riyadh 11451, Saudi Arabia
| | - Safina Ghaffar
- Department of Pharmacognosy, College of Pharmacy, King Saud University, PO Box 2457, Riyadh 11451, Saudi Arabia
| | - Lateefa AlAjlan
- Department of Pharmacognosy, College of Pharmacy, King Saud University, PO Box 2457, Riyadh 11451, Saudi Arabia
| | - Shagufta Perveen
- Department of Pharmacognosy, College of Pharmacy, King Saud University, PO Box 2457, Riyadh 11451, Saudi Arabia
| | - Eman Al-Turki
- Department of Pharmacognosy, College of Pharmacy, King Saud University, PO Box 2457, Riyadh 11451, Saudi Arabia
| | - Fuad Ameen
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
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3
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Yang T, Qi F, Guo F, Shao M, Song Y, Ren G, Linlin Z, Qin G, Zhao Y. An update on chronic complications of diabetes mellitus: from molecular mechanisms to therapeutic strategies with a focus on metabolic memory. Mol Med 2024; 30:71. [PMID: 38797859 PMCID: PMC11128119 DOI: 10.1186/s10020-024-00824-9] [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: 01/25/2024] [Accepted: 04/29/2024] [Indexed: 05/29/2024] Open
Abstract
Diabetes mellitus, a chronic metabolic disease, often leads to numerous chronic complications, significantly contributing to global morbidity and mortality rates. High glucose levels trigger epigenetic modifications linked to pathophysiological processes like inflammation, immunity, oxidative stress, mitochondrial dysfunction, senescence and various kinds of cell death. Despite glycemic control, transient hyperglycemia can persistently harm organs, tissues, and cells, a latent effect termed "metabolic memory" that contributes to chronic diabetic complications. Understanding metabolic memory's mechanisms could offer a new approach to mitigating these complications. However, key molecules and networks underlying metabolic memory remain incompletely understood. This review traces the history of metabolic memory research, highlights its key features, discusses recent molecules involved in its mechanisms, and summarizes confirmed and potential therapeutic compounds. Additionally, we outline in vitro and in vivo models of metabolic memory. We hope this work will inform future research on metabolic memory's regulatory mechanisms and facilitate the development of effective therapeutic compounds to prevent diabetic complications.
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Affiliation(s)
- Tongyue Yang
- Division of Endocrinology, Department of Internal Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Feng Qi
- Traditional Chinese Medicine Integrated Department of Nephrology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
- Research Institute of Nephrology, Zhengzhou University, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, People's Republic of China
| | - Feng Guo
- Division of Endocrinology, Department of Internal Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Mingwei Shao
- Division of Endocrinology, Department of Internal Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Yi Song
- Division of Endocrinology, Department of Internal Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Gaofei Ren
- Division of Endocrinology, Department of Internal Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Zhao Linlin
- Division of Endocrinology, Department of Internal Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Guijun Qin
- Division of Endocrinology, Department of Internal Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Yanyan Zhao
- Division of Endocrinology, Department of Internal Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China.
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Li KR, Lava CX, Neughebauer MB, Rohrich RN, Atves J, Steinberg J, Akbari CM, Youn RC, Attinger CE, Evans KK. A Multidisciplinary Approach to End-Stage Limb Salvage in the Highly Comorbid Atraumatic Population: An Observational Study. J Clin Med 2024; 13:2406. [PMID: 38673679 PMCID: PMC11050798 DOI: 10.3390/jcm13082406] [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: 03/22/2024] [Revised: 04/09/2024] [Accepted: 04/14/2024] [Indexed: 04/28/2024] Open
Abstract
Background: The use of free tissue transfer (FTT) is efficacious for chronic, non-healing lower extremity (LE) wounds. The four pillars of managing patient comorbidities, infection control, blood flow status, and biomechanical function are critical in achieving successful limb salvage. The authors present their multidisciplinary institutional experience with a review of 300 FTTs performed for the complex LE limb salvage of chronic LE wounds. Methods: A single-institution, retrospective review of atraumatic LE FTTs performed by a single surgeon from July 2011 to January 2023 was reviewed. Data on patient demographics, comorbidities, preoperative management, intraoperative details, flap outcomes, postoperative complications, and long-term outcomes were collected. Results: A total of 300 patients who underwent LE FTT were included in our retrospective review. Patients were on average 55.9 ± 13.6 years old with a median Charlson Comorbidity Index of 4 (IQR: 3). The majority of patients were male (70.7%). The overall hospital length of stay (LOS) was 27 days (IQR: 16), with a postoperative LOS of 14 days (IQR: 9.5). The most prevalent comorbidities were diabetes (54.7%), followed by peripheral vascular disease (PVD: 35%) and chronic kidney disease (CKD: 15.7%). The average operative LE FTT time was 416 ± 115 min. The majority of flaps were anterolateral thigh (ALT) flaps (52.7%), followed by vastus lateralis (VL) flaps (25.3%). The immediate flap success rate was 96.3%. The postoperative ipsilateral amputation rate was 12.7%. Conclusions: Successful limb salvage is possible in a highly comorbid patient population with a high prevalence of diabetes mellitus, peripheral vascular disease, and end-stage renal disease. In order to optimize patients prior to their LE FTT, extensive laboratory, arterial, and venous preoperative testing and diabetes management are needed preoperatively. Postoperative monitoring and long-term follow-up with a multidisciplinary team are also crucial for long-term limb salvage success.
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Affiliation(s)
- Karen R. Li
- Georgetown University School of Medicine, Washington, DC 20007, USA
| | | | | | | | - Jayson Atves
- Department of Podiatry, MedStar Georgetown University Hospital, Washington, DC 20007, USA
| | - John Steinberg
- Department of Podiatry, MedStar Georgetown University Hospital, Washington, DC 20007, USA
| | - Cameron M. Akbari
- Department of Vascular Surgery, MedStar Georgetown University Hospital, Washington, DC 20007, USA
| | - Richard C. Youn
- Department of Plastic and Reconstructive Surgery, MedStar Georgetown University Hospital, Washington, DC 20007, USA
| | - Christopher E. Attinger
- Department of Plastic and Reconstructive Surgery, MedStar Georgetown University Hospital, Washington, DC 20007, USA
| | - Karen K. Evans
- Department of Plastic and Reconstructive Surgery, MedStar Georgetown University Hospital, Washington, DC 20007, USA
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Xu Y, Geng R, Meng X, Feng Z, Wang X, Zhang G, Bai L. The impact of inflammatory biomarkers on amputation rates in patients with diabetic foot ulcers. Int Wound J 2024; 21:e14827. [PMID: 38522433 PMCID: PMC10961172 DOI: 10.1111/iwj.14827] [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: 02/02/2024] [Revised: 02/18/2024] [Accepted: 02/23/2024] [Indexed: 03/26/2024] Open
Abstract
Diabetic Foot Ulcers (DFUs) are a major complication of diabetes, often leading to amputation. Understanding the relationship between haematological inflammatory markers and the incidence of amputation in DFU patients with infectious complications is crucial for improving management and outcomes. This retrospective study, conducted from May 2020 to October 2022, involved 109 patients with DFUs, categorised into amputation (AM) and non-amputation (NAM) groups. Patients were evaluated for various factors, including demographic data, DFU duration, and blood parameters such as haemoglobin A1c (HbA1c), haemoglobin (Hb), albumin (ALB), white blood cell count (WBC), erythrocyte sedimentation rate (ESR), procalcitonin (PCT), C-reactive protein (CRP), platelet-to-lymphocyte ratio (PLR), neutrophil-to-lymphocyte ratio (NLR), and lymphocyte-to-monocyte ratio (LMR). Statistical analyses were performed using independent sample t-tests, Mann-Whitney U test and logistic regression. The univariate analysis showed no significant difference in BMI, DM duration or DFU duration between groups. However, significant differences were noted in PCT, Hb, ESR, ALB, HbA1c and WBC levels, and in inflammatory ratios (NLR, PLR and LMR). Multivariate logistic regression identified CRP, NLR and PLR as independent risk factors for amputation. The study highlights CRP, PLR and NLR as key independent risk factors for amputation in patients with DFUs. These easily obtainable markers from routine blood tests can effectively aid in predicting the risk of osteomyelitis and amputation, enhancing clinical decision making and patient care strategies.
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Affiliation(s)
- Yun Xu
- Ward 1, The Department of EndocrinologyThe First Affiliated Hospital of Xinxiang Medical UniversityWeihuiChina
| | - Ruina Geng
- Ward 1, The Department of EndocrinologyThe First Affiliated Hospital of Xinxiang Medical UniversityWeihuiChina
| | - Xiangyu Meng
- Ward 1, The Department of EndocrinologyThe First Affiliated Hospital of Xinxiang Medical UniversityWeihuiChina
| | - Zhipeng Feng
- The Department of General MedicineThe First Affiliated Hospital of Xinxiang Medical UniversityWeihuiChina
| | - Xu Wang
- Ward 1, The Department of EndocrinologyThe First Affiliated Hospital of Xinxiang Medical UniversityWeihuiChina
| | - Guanying Zhang
- Ward 2, The Department of UrologyThe First Affiliated Hospital of Xinxiang Medical UniversityWeihuiChina
| | - Liwei Bai
- Ward 1, The Department of EndocrinologyThe First Affiliated Hospital of Xinxiang Medical UniversityWeihuiChina
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6
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Lei Y, Jiang P, Tian T. Comparative analysis of surgical and non-surgical wound approaches in diabetic foot ulcer treatment: Meta-analysis and systematic review. Int Wound J 2024; 21:e14601. [PMID: 38158715 PMCID: PMC10961902 DOI: 10.1111/iwj.14601] [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: 12/01/2023] [Revised: 12/08/2023] [Accepted: 12/08/2023] [Indexed: 01/03/2024] Open
Abstract
The assessment for safety and effectiveness of surgical interventions in the management of diabetic foot ulcers (DFUs) in comparison to non-surgical approaches was performed. A comprehensive search was performed across PubMed, MEDLINE, Cochrane Library and EMBASE in order to identify case-control studies, randomized controlled trials (RCTs), observational studies, cohort studies and observational studies pertaining to DFU treatments. Studies conducted in English language and focusing on wound healing rates, recurrence rates, time to healing and complication management met the inclusion criteria. There were six studies included in this meta-analysis. Surgical procedures, such as debridement, revascularization and skin transplantation, demonstrated significantly superior efficacy in promoting wound healing (84%) and shorter duration of healing (6 weeks) in comparison to non-surgical approaches, including off-loading, wound dressings and pharmacological therapies. Surgical interventions for DFUs resulted in a wound recovery rate of 84%, a significantly higher mean rate than non-surgical approaches (60%) that was observed. In addition, it was observed that the surgical group experienced considerably reduced average healing period of 9 weeks, in contrast to the non-surgical group's mean healing period of 12 weeks. Nevertheless, it is imperative to acknowledge that surgical procedures were notably correlated with a heightened occurrence of complications, such as amputations, which transpired in 19% of instances. Surgical interventions for DFUs may provide superior short-term results with regard to healing rates and recovery time, as indicated by this meta-analysis. However, they are additionally correlated with the heightened likelihood of complications. Although non-surgical techniques offered comparatively secure option, they were also less reliable. Individualized treatment modalities should be chosen in consideration of patient-specific factors and comparative advantages and disadvantages.
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Affiliation(s)
- Yu Lei
- Medical Informatization, Information Department of Shanghai Sixth People's HospitalShanghaiChina
| | - Ping Jiang
- Shanghai Palline Data Technology Co., LtdShanghaiChina
| | - Tian Tian
- Shanghai Palline Data Technology Co., LtdShanghaiChina
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7
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Li N, Lu X, Yang Y, Ning S, Tian Y, Zhou M, Wang Z, Wang L, Zang J. Calcium Peroxide-Based Hydrogel Patch with Sustainable Oxygenation for Diabetic Wound Healing. Adv Healthc Mater 2024:e2303314. [PMID: 38558386 DOI: 10.1002/adhm.202303314] [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: 09/28/2023] [Revised: 02/24/2024] [Indexed: 04/04/2024]
Abstract
Nonhealing diabetic wounds are predominantly attributed to the inhibition of angiogenesis, re-epithelialization, and extracellular matrix (ECM) synthesis caused by hypoxia. Although oxygen therapy has demonstrated efficacy in promoting healing, its therapeutic impact remains suboptimal due to unsustainable oxygenation. Here, this work proposes an oxygen-releasing hydrogel patch embedded with polyethylene glycol-modified calcium peroxide microparticles, which sustainably releases oxygen for 7 days without requiring any supplementary conditions. The released oxygen effectively promotes cell migration and angiogenesis under hypoxic conditions as validated in vitro. The in vivo tests in diabetic mice models show that the sustainably released oxygen significantly facilitates the synthesis of ECM, induces angiogenesis, and decreases the expression of inflammatory cytokines, achieving a diabetic wound healing rate of 84.2% on day 7, outperforming the existing oxygen-releasing approaches. Moreover, the proposed hydrogel patch is designed with porous, soft, antibacterial, biodegradable, and storage stability for 15 days. The proposed hydrogel patch is expected to be promising in clinics treating diabetic wounds.
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Affiliation(s)
- Na Li
- School of Integrated Circuits, Huazhong University of Science and Technology, Wuhan, 430074, China
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Xiaohuan Lu
- Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Yueying Yang
- School of Integrated Circuits, Huazhong University of Science and Technology, Wuhan, 430074, China
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Shan Ning
- School of Integrated Circuits, Huazhong University of Science and Technology, Wuhan, 430074, China
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Ye Tian
- School of Integrated Circuits, Huazhong University of Science and Technology, Wuhan, 430074, China
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Mengyuan Zhou
- School of Integrated Circuits, Huazhong University of Science and Technology, Wuhan, 430074, China
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Zheng Wang
- Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Lin Wang
- Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
- Department of Clinical Laboratory, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Jianfeng Zang
- School of Integrated Circuits, Huazhong University of Science and Technology, Wuhan, 430074, China
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, China
- The State Key Laboratory of Intelligent Manufacturing Equipment and Technology, School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
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Abo-Alella D, Abdelmoniem W, Tantawy E, Asaad A. Biofilm-producing and carbapenems-resistant Escherichia coli nosocomial uropathogens: a cross-sectional study. Int Microbiol 2024:10.1007/s10123-024-00495-w. [PMID: 38489099 DOI: 10.1007/s10123-024-00495-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: 12/19/2023] [Revised: 02/06/2024] [Accepted: 03/01/2024] [Indexed: 03/17/2024]
Abstract
OBJECTIVES This cross-sectional study aims to determine the incidence and potential risk factors associated with biofilm-producing uropathogenic Escherichia coli (UPEC) nosocomial strains from a tertiary care hospital and to examine the prospective correlation between biofilm generation and antibiotic resistance phenotypes and genotypes. METHODS A total of 130 UPEC nosocomial isolates were identified, their biofilm formation was quantified using a modified microtiter plate assay, and their antibiotic susceptibilities were assessed utilizing the disc diffusion method. Isolates were then subjected to PCR assays targeting blaKPC, blaVIM, blaIMP, and blaOXA48 genes. RESULTS Over half of the isolates (n = 76, 58.5%) were biofilm producers. Among 17 carbapenem-resistant isolates, 6 (42.9%) isolates harbored the blaOXA48 gene, and only 1 (9.1%) isolate was positive for the blaVIM gene. Prior antibiotic therapy (aOR 15.782, p 0.000) and diabetes mellitus DM (aOR 11.222, p 0.016) were the significant risk factors associated with biofilm production, as determined by logistic regression analysis of the data. In addition, gentamicin resistance was the only statistically significant antibiotic resistance pattern associated with biofilm production (aOR 9.113, p 0.02). CONCLUSIONS The findings of this study emphasize the significance of implementing proper infection control measures to avoid the horizontal spread of biofilm formation and associated antimicrobial resistance patterns among UPEC nosocomial strains.
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Affiliation(s)
- Doaa Abo-Alella
- Department of Medical Microbiology and Immunology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Wessam Abdelmoniem
- Department of Medical Microbiology and Immunology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Enas Tantawy
- Department of Medical Microbiology and Immunology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Ahmed Asaad
- Department of Medical Microbiology and Immunology, Faculty of Medicine, Zagazig University, Zagazig, Egypt.
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9
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Qin B, Peng Q, Dong H, Lei L, Wu S. Non-coding RNAs in diabetic foot ulcer- a focus on infected wounds. Diabetes Metab Res Rev 2024; 40:e3740. [PMID: 37839046 DOI: 10.1002/dmrr.3740] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 07/19/2023] [Accepted: 09/25/2023] [Indexed: 10/17/2023]
Abstract
Diabetes mellitus is associated with a wide range of neuropathies, vasculopathies, and immunopathies, resulting in many complications. More than 30% of diabetic patients risk developing diabetic foot ulcers (DFUs). Non-coding RNAs (ncRNAs), including microRNAs (miRNAs), long non-coding RNAs (lncRNAs), and circular RNAs (circRNAs), play essential roles in various biological functions in the hyperglycaemic environment that determines the development of DFU. Ulceration results in tissue breakdown and skin barrier scavenging, thereby facilitating bacterial infection and biofilm formation. Many bacteria contribute to diabetic foot infection (DFI), including Staphylococcus aureus (S. aureus) et al. A heterogeneous group of "ncRNAs," termed small RNAs (sRNAs), powerfully regulates biofilm formation and DFI healing. Multidisciplinary foot care interventions have been identified for nonhealing ulcers. With an appreciation of the link between disease processes and ncRNAs, a novel therapeutic model of bioactive materials loaded with ncRNAs has been developed to prevent and manage diabetic foot complications.
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Affiliation(s)
- Boquan Qin
- Department of Orthopedic Surgery and Orthopedic Research Institute, Laboratory of Stem Cell and Tissue Engineering, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Qi Peng
- Department of Orthopedic Surgery and Orthopedic Research Institute, Laboratory of Stem Cell and Tissue Engineering, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Hongxian Dong
- Department of Orthopedic Surgery and Orthopedic Research Institute, Laboratory of Stem Cell and Tissue Engineering, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Lei Lei
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Shizhou Wu
- Department of Orthopedic Surgery and Orthopedic Research Institute, Laboratory of Stem Cell and Tissue Engineering, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
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10
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Datta S, Nag S, Roy DN. Biofilm-producing antibiotic-resistant bacteria in Indian patients: a comprehensive review. Curr Med Res Opin 2024; 40:403-422. [PMID: 38214582 DOI: 10.1080/03007995.2024.2305241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Accepted: 01/10/2024] [Indexed: 01/13/2024]
Abstract
For the past few years, microbial biofilms have been emerging as a significant threat to the modern healthcare system, and their prevalence and antibiotic resistance threat gradually increase daily among the human population. The biofilm has a remarkable impact in the field of infectious diseases, in particular healthcare-associated infections related to indwelling devices such as catheters, implants, artificial heart valves, and prosthetic joints. Bacterial biofilm potentially adheres to any biotic or abiotic surfaces that give specific shelter to the microbial community, making them less susceptible to many antimicrobial agents and even resistant to the immune cells of animal hosts. Around thirty clinical research reports available in PUBMED have been considered to establish the occurrence of biofilm-forming bacteria showing resistance against several regular antibiotics prescribed against infection by clinicians among Indian patients. After the extensive literature review, our observation exhibits a high predominance of biofilm formation among bacteria such as Escherichia sp., Streptococcus sp., Staphylococcus sp., and Pseudomonas sp., those are the most common biofilm-producing antibiotic-resistant bacteria among Indian patients with urinary tract infections and/or catheter-related infections, respiratory tract infections, dental infections, skin infections, and implant-associated infections. This review demonstrates that biofilm-associated bacterial infections constantly elevate in several pathological conditions along with the enhancement of the multi-drug resistance phenomenon.
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Affiliation(s)
- Susmita Datta
- Department of Chemical Engineering, National Institute of Technology, Agartala, Tripura, India
| | - Soma Nag
- Department of Chemical Engineering, National Institute of Technology, Agartala, Tripura, India
| | - Dijendra Nath Roy
- Department of Biotechnology, National Institute of Technology, Raipur, Chhattisgarh, India
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Liu J, Liu L, Li Y, Cai Z, Zhang H. Concordance of bone culture and deep tissue culture during the operation of diabetic foot osteomyelitis and clinical characteristics of patients. Eur J Trauma Emerg Surg 2023; 49:2579-2588. [PMID: 37561150 DOI: 10.1007/s00068-023-02342-5] [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: 03/25/2023] [Accepted: 08/01/2023] [Indexed: 08/11/2023]
Abstract
PURPOSE To retrospectively analyze the concordance of bacterial culture between bone tissue and deep soft tissue in diabetic foot osteomyelitis (DFO) patients and clinical characteristics of patients. METHODS This study collected samples from 155 patients with suspected DFO (who required amputation after clinical evaluation). Bacterial culture and drug susceptibility tests were performed on the patients' deep soft tissue and bone tissue, and the consistency between the two was compared. In addition, the differences among DFO patients with different degrees of infection were compared classified by the PEDIS classifications. RESULTS Among the 155 patients diagnosed with DFO, the positive rate of bone culture was 78.7% (122/155). This study cultured 162 strains, including 73 Gram-positive bacteria, 83 Gram-negative bacteria, and 6 fungi. Staphylococcus aureus (33 strains) was the most common bacteria. The overall agreement between bone culture and tissue culture was 42.8%, with Staphylococcus aureus and Enterobacteria having the best (64.3%) and least agreements (27.3%), respectively. The drug sensitivity results in bone culture showed that Staphylococcus aureus was the main Gram-positive bacteria. The bacteria were sensitive to linezolid and vancomycin. Proteus mirabilis was the main Gram-negative bacteria. These were more sensitive than biapenem and piperacillin/tazobactam. Fungi were more sensitive to voriconazole and itraconazole. CONCLUSION The culture results of deep soft tissues near the bone cannot accurately represent the true pathogen of DFO. For DFO patients, bone culture should be taken as much as possible, and appropriate antibiotics should be selected according to the drug susceptibility results.
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Affiliation(s)
- Jiawen Liu
- Department of Endocrinology, People's Hospital of Zhengzhou University, Henan Provincial People's Hospital, No. 7 Weiwu Road, Jinshui District, Zhengzhou, 450003, Henan, China
| | - Linlin Liu
- Department of Endocrinology, People's Hospital of Zhengzhou University, Henan Provincial People's Hospital, No. 7 Weiwu Road, Jinshui District, Zhengzhou, 450003, Henan, China
| | - Yantao Li
- Department of Endocrinology, People's Hospital of Henan University, Henan Provincial People's Hospital, Zhengzhou, 450003, China
| | - Zixin Cai
- Department of Endocrinology, People's Hospital of Zhengzhou University, Henan Provincial People's Hospital, No. 7 Weiwu Road, Jinshui District, Zhengzhou, 450003, Henan, China
| | - Huifeng Zhang
- Department of Endocrinology, People's Hospital of Zhengzhou University, Henan Provincial People's Hospital, No. 7 Weiwu Road, Jinshui District, Zhengzhou, 450003, Henan, China.
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12
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Suhandi C, Mohammed AFA, Wilar G, El-Rayyes A, Wathoni N. Effectiveness of Mesenchymal Stem Cell Secretome on Wound Healing: A Systematic Review and Meta-analysis. Tissue Eng Regen Med 2023; 20:1053-1062. [PMID: 37682505 PMCID: PMC10645742 DOI: 10.1007/s13770-023-00570-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 06/15/2023] [Accepted: 07/03/2023] [Indexed: 09/09/2023] Open
Abstract
BACKGROUND Secretome provides promising potential in replacing cell-based therapies in wound repair therapy. This study aimed to systematically review and conduct a meta-analysis on the effectiveness of secretome in promoting wound healing. METHODS To ensure the rigor and transparency of our study, we followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines, as registered in PROSPERO with ID: CRD42023412671. We conducted a comprehensive search on four electronic databases to identify studies evaluating the effect of secretome on various clinical parameters of wound repair. In addition, we evaluated the risk of bias for each study using the Jadad and Newcastle-Ottawa scale. To synthesize the data, we employed a fixed-effects model and calculated the mean difference or odds ratio (OR) with a 95% confidence interval (CI). RESULTS Based on six included articles, secretome is known to affect several clinical parameters in wound healing included the size and depth of ulcers during healing; the E´chelle d'évaluation clinique des cicatrices d'acne (ECCA) score, epidermal thickness, collagen fibers, abnormal elastic tissues, volume of atrophic acne scars, skin pore volume, and erythema during acne scar healing; and microcrust areas, erythema index, transepidermal water loss, volume of atrophic acne scars, erythema, and relative gene expression of procollagen type I, procollagen type III, and elastin were evaluated in wound healing after laser treatment. Meta-analysis studies showed that secretome reduced ulcer size (mean difference: 0.87, 95% CI of 0.37-1.38, p = 0.0007), decreased ulcer depth (mean difference: 0.18, 95% CI of 0.11-0.25, p < 0.00001), and provided patient satisfaction (odds ratio: 9.71, 95% CI of 3.47-21.17, p < 0.0001). However, secretome failed to reach significance in clinical improvement (OR 0.38, 95% CI 0.10, 1.53, p = 0.06). CONCLUSION The secretome provides good effectiveness in accelerating wound healing through a mechanism that correlates with several clinical parameters of wound repair.
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Affiliation(s)
- Cecep Suhandi
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, Universitas Padjadjaran, Sumedang, 45363, Indonesia
| | | | - Gofarana Wilar
- Department of Pharmacology and Clinical Pharmacy, Faculty of Pharmacy, Universitas Padjadjaran, Sumedang, 45363, Indonesia
| | - Ali El-Rayyes
- Department of Chemistry, Faculty of Science, Northern Border University, Arar, Saudi Arabia
| | - Nasrul Wathoni
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, Universitas Padjadjaran, Sumedang, 45363, Indonesia.
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Tao L, Yuan X. Efficacy and safety of hyperbaric oxygen therapy in the management of diabetic foot ulcers: A systematic review and meta-analysis. Int Wound J 2023; 21:e14507. [PMID: 37990756 PMCID: PMC10898400 DOI: 10.1111/iwj.14507] [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: 10/16/2023] [Revised: 11/06/2023] [Accepted: 11/08/2023] [Indexed: 11/23/2023] Open
Abstract
Diabetic foot ulcers (DFUs) represent a major health concern for diabetic patients, often leading to debilitating complications. Hyperbaric oxygen therapy (HBOT) has been posited as an adjunctive therapeutic strategy to augment the healing rates of these ulcers. This systematic review and meta-analysis sought to critically evaluate the efficacy and safety of HBOT in the context of DFUs management. A rigorous search, adhering to PRISMA guidelines, was conducted across multiple electronic databases. Randomized controlled trials (RCTs) assessing the impact of HBOT on DFUs were included. Outcome measures were complete ulcer healing, major and minor amputation rates and adverse reactions. The analysis employed both fixed and random-effects models, contingent on the heterogeneity levels detected. Seven studies met the inclusion criteria. HBOT was found to significantly improve the complete healing rates of DFUs with a risk ratio (RR) of 3.59 (95% CI: 1.56-8.29, p < 0.001). However, HBOT's impact on both major and minor amputation rates did not yield statistically significant results. The sensitivity analysis underscored the robustness of the principal outcomes, and the publication bias assessment suggested the absence of any significant bias. Hyperbaric oxygen therapy stands out as a potent therapeutic tool in promoting the complete healing of diabetic foot ulcers, offering a promising adjunct to standard care protocols, while ensuring patient safety.
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Affiliation(s)
- Lihua Tao
- Department of Endocrinology, Linping Campus, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Xiao Yuan
- Department of Endocrinology, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China
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14
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Liao C, Zhu M, Ding H, Li Y, Sun Q, Li X. Comparing the traditional and emerging therapies for enhancing wound healing in diabetic patients: A pivotal examination. Int Wound J 2023; 21:e14488. [PMID: 37984812 PMCID: PMC10898383 DOI: 10.1111/iwj.14488] [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: 10/16/2023] [Revised: 10/22/2023] [Accepted: 10/23/2023] [Indexed: 11/22/2023] Open
Abstract
Chronic non-healing ulcers are common among diabetic patients, posing significant therapeutic challenges. This study compared traditional therapies (TT) and emerging therapies (ET) for enhancing diabetic patients' wound healing. A total of 150 diabetic patients with chronic ulcers, ages 30-65, were randomly assigned to one of two groups: TT (n = 75) or ET (n = 75). ET included growth factors, bioengineered skin substitutes, and hyperbaric oxygen therapy, while TT for wound healing predominantly included debridement, saline-moistened dressings, and off-loading techniques. The primary outcome was the percentage of lesions that healed within 12 weeks, which was assessed at intervals. Secondary outcomes included time to wound recovery, pain using Visual Analogue Scale (VAS), and life quality via Wound-QoL questionnaire. By the 12th week, the ET group had a repair rate of 81.33% compared to 57.33% in TT group (p < 0.05). ET exhibited superior pain reduction (VAS score: 4.7 ± 1.6 for ET vs. 6.2 ± 1.4 for TT, p < 0.05) and improved life quality (Wound-QoL score: 61.8 ± 9.1 for ET vs. 44.3 ± 10.3 for TT, p < 0.05). However, there were slightly more cases of cutaneous irritation and hematomas among ET patients. ET have demonstrated significant efficacy in accelerating wound healing in diabetic patients, surpassing traditional methods, with additional advantages in pain management and life quality. Due to the observed minor complications, however, caution is required.
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Affiliation(s)
- Chunfen Liao
- Department of Endocrinology, Renmin HospitalHubei University of MedicineShiyanChina
| | - Mingjie Zhu
- Department of Endocrinology, Renmin HospitalHubei University of MedicineShiyanChina
| | - Hongchen Ding
- Department of Endocrinology, Renmin HospitalHubei University of MedicineShiyanChina
| | - Yanli Li
- Department of Endocrinology, Renmin HospitalHubei University of MedicineShiyanChina
| | - Qianshu Sun
- Department of Endocrinology, Renmin HospitalHubei University of MedicineShiyanChina
| | - Xueqin Li
- Department of Endocrinology, Renmin HospitalHubei University of MedicineShiyanChina
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Cheng Y, Ren L, Niyazi A, Sheng L, Zhao Y. Identification of potential immunologic resilience in the healing process of diabetic foot ulcers. Int Wound J 2023; 21:e14465. [PMID: 37926487 PMCID: PMC10898407 DOI: 10.1111/iwj.14465] [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: 09/07/2023] [Accepted: 10/15/2023] [Indexed: 11/07/2023] Open
Abstract
Diabetic foot ulcers (DFUs) are one of the most common and challenging complications of diabetes, yet our understanding of their pathogenesis remains limited. We collected gene expression data of DFU patients from public databases. Bioinformatics tools were applied for systematic analysis, including the identification of differentially expressed genes (DEGs), weighted gene co-expression network analysis (WGCNA) and enrichment analysis. We further used single-cell RNA sequencing to identify the distribution of different cell populations in DFU. Finally, key results were validated using reverse transcription-quantitative polymerase chain reaction (RT-qPCR) and flow cytometry. We identified 217 DEGs between ulcerated and healthy skin, and 37 DEGs between healing ulcers and ulcers. WGCNA revealed that the cyan module had the highest positive correlation with healthy skin and negative correlation with ulcers. The black module had the highest negative correlation with healthy skin and positive correlation with ulcers. Enrichment analysis showed that the genes in the cyan module were mainly associated with complement and coagulation cascades, while the genes in the black module were mainly associated with the IL-17 signalling pathway. In addition, CD8 T cells were significantly lower in ulcers than in healthy and healing ulcers. By comparing marker genes of CD8 T cells, we identified key genes in the cyan and black modules and validated their expression using RT-qPCR. The proportion of CD8 T cells was increased in healing ulcers. Flow cytometry detected increased levels of CD8 T, B and natural killer cells in healing ulcers. CD8 T cells and related key genes play an important role in the healing process of DFU. The results of this study provide a new perspective for understanding the pathogenesis and treatment of DFU.
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Affiliation(s)
- Yifeng Cheng
- Department of BurnsThe First Affiliated Hospital of Xinjiang Medical UniversityXinjiangChina
| | - Lei Ren
- Department of BurnsThe First Affiliated Hospital of Xinjiang Medical UniversityXinjiangChina
| | - Aihemaitijiang Niyazi
- Department of BurnsThe First Affiliated Hospital of Xinjiang Medical UniversityXinjiangChina
| | - Li Sheng
- Department of BurnsThe First Affiliated Hospital of Xinjiang Medical UniversityXinjiangChina
| | - Yang Zhao
- Department of BurnsThe First Affiliated Hospital of Xinjiang Medical UniversityXinjiangChina
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16
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Travis DJ, Bradbury J, Benkendorff K. Toward non-invasive collection methods for sampling the microbiome of diabetic foot ulcers. Int Wound J 2023; 20:3731-3737. [PMID: 37501084 PMCID: PMC10588311 DOI: 10.1111/iwj.14267] [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: 04/04/2023] [Accepted: 05/22/2023] [Indexed: 07/29/2023] Open
Abstract
Identifying the microbiome within chronic diabetic foot ulcers is essential if effective antimicrobial therapies are to be administered. Using culture and 16S rRNA gene sequencing, the aim of this study was to compare the microbiome of paired tissue scraping samples with swab samples, collected from participants during attendance at a high-risk foot clinic. The mean richness of cultured swab and tissue scraping samples was consistent, with anaerobes infrequently isolated from both sample types. Comparing percentage frequencies of detection of selected genera of known and potential pathogens namely Staphylococcus, Streptococcus, Enterococcus, Corynebacterium, Enterobacteriaceae and Pseudomonas from cultured and sequenced swab and tissue scrapings indicated that both collection methods captured varying percentages of all the selected genera. The mean abundance of sequenced samples was not significantly different between swabs and tissue scrapings. The mean richness or number of distinct operational taxonomic units (OTUs) and Shannon's H diversity index were not significantly different between the two collection methods. The mean relative abundance of the selected genera of known and potential pathogens, including anaerobes Anaerococcus and Finegoldia, was higher in swabs compared with tissue scrapings and significantly so in Staphylococcus and Pseudomonas genera. Multivariate analyses confirmed no significant differences between the bacterial community compositions of the paired samples. These results suggest that tissue scrapings and swabs can effectively capture the microbiome of chronic DFUs using culture and 16S rRNA gene sequencing.
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Affiliation(s)
| | - Joanne Bradbury
- Faculty of HealthSouthern Cross UniversityGold CoastAustralia
| | - Kirsten Benkendorff
- National Marine Science Centre, Faculty of Environment, Science and EngineeringSouthern Cross UniversityCoffs HarbourNSWAustralia
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17
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Liang Y, Li M, Tang Y, Yang J, Wang J, Zhu Y, Liang H, Lin Q, Cheng Y, Yang X, Zhu H. Temperature-sensitive hydrogel dressing loaded with nicotinamide mononucleotide accelerating wound healing in diabetic mice. Biomed Pharmacother 2023; 167:115431. [PMID: 37688988 DOI: 10.1016/j.biopha.2023.115431] [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: 07/07/2023] [Revised: 08/27/2023] [Accepted: 08/31/2023] [Indexed: 09/11/2023] Open
Abstract
Diabetic foot ulcers, a common complication of diabetes mellitus, significantly impact patients' quality of life and impose a substantial economic burden on healthcare systems. However, the currently used treatments are associated with various challenges and the traditionally used dressings lack functional efficacy. Oxidative stress is believed to play a vital role in diabetic wound healing. Therefore, nicotinamide mononucleotide (NMN), which is known for its antioxidant properties, offers the potential to accelerate the wound-healing process. Here, a thermosensitive composite hydrogel was synthesized by mixing Pluronic F127 and Pluronic F68 with an antibacterial component chitosan. The hydrogel exhibited favorable properties including a stable structure, appropriate solid-liquid phase change, loose porosity, slow-release, antibacterial properties, and biocompatibility. In vitro experiments demonstrated that the NMN-loaded temperature-sensitive hydrogel effectively promoted cell proliferation, migration, and angiogenesis and exhibited antioxidant activity. In diabetic thickness skin defect models, NMN-loaded temperature-sensitive hydrogel treatment significantly accelerated wound healing by promoting collagen synthesis, angiogenesis, and increased expression of vascular endothelial growth factor and transforming growth factor- β1. In summary, NMN-loaded temperature-sensitive hydrogel can promote diabetic wound healing in a simple, economical, effective, and safe manner, with potential application in treating diabetic wounds.
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Affiliation(s)
- Yue Liang
- State Key Laboratory of Genetic Engineering and Engineering Research Center of Gene Technology, Ministry of Education, Institute of Genetics, School of Life Sciences, Fudan University, Shanghai, China
| | - Min Li
- State Key Laboratory of Genetic Engineering and Engineering Research Center of Gene Technology, Ministry of Education, Institute of Genetics, School of Life Sciences, Fudan University, Shanghai, China
| | - Yuan Tang
- State Key Laboratory of Genetic Engineering and Engineering Research Center of Gene Technology, Ministry of Education, Institute of Genetics, School of Life Sciences, Fudan University, Shanghai, China
| | - Jinlong Yang
- State Key Laboratory of Genetic Engineering and Engineering Research Center of Gene Technology, Ministry of Education, Institute of Genetics, School of Life Sciences, Fudan University, Shanghai, China
| | - Jing Wang
- State Key Laboratory of Genetic Engineering and Engineering Research Center of Gene Technology, Ministry of Education, Institute of Genetics, School of Life Sciences, Fudan University, Shanghai, China
| | - Yuqi Zhu
- State Key Laboratory of Genetic Engineering and Engineering Research Center of Gene Technology, Ministry of Education, Institute of Genetics, School of Life Sciences, Fudan University, Shanghai, China
| | - Huitong Liang
- State Key Laboratory of Genetic Engineering and Engineering Research Center of Gene Technology, Ministry of Education, Institute of Genetics, School of Life Sciences, Fudan University, Shanghai, China
| | - Qinru Lin
- State Key Laboratory of Genetic Engineering and Engineering Research Center of Gene Technology, Ministry of Education, Institute of Genetics, School of Life Sciences, Fudan University, Shanghai, China
| | - Yipen Cheng
- State Key Laboratory of Genetic Engineering and Engineering Research Center of Gene Technology, Ministry of Education, Institute of Genetics, School of Life Sciences, Fudan University, Shanghai, China
| | - Xinyi Yang
- State Key Laboratory of Genetic Engineering and Engineering Research Center of Gene Technology, Ministry of Education, Institute of Genetics, School of Life Sciences, Fudan University, Shanghai, China
| | - Huanzhang Zhu
- State Key Laboratory of Genetic Engineering and Engineering Research Center of Gene Technology, Ministry of Education, Institute of Genetics, School of Life Sciences, Fudan University, Shanghai, China.
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18
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Fu Z, Jiang Z, Liao X, Liu M, Guo G, Wang X, Yang G, Zhou Z, Hu L, Xiong Z. Upregulation of circ_0080968 in diabetic foot ulcer inhibits wound healing via repressing the migration and promoting proliferation of keratinocytes. Gene 2023; 883:147669. [PMID: 37500023 DOI: 10.1016/j.gene.2023.147669] [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: 05/07/2023] [Revised: 07/13/2023] [Accepted: 07/24/2023] [Indexed: 07/29/2023]
Abstract
BACKGROUND Diabetic foot ulcer (DFU) is a serious chronic complication of diabetes mellitus whose pathogenesis remains unclear. Circular RNA (circRNA) refers to a group of covalently closed non-coding RNAs that are reported to be dysregulated in patients with DFU. However, the mechanism whereby dysregulation in circRNAs contributes to DFU remains unclear. In this study, we investigated the role of dysregulated circRNAs in DFU. MATERIALS AND METHODS A gene expression dataset was downloaded from the Gene Expression Omnibus portal and analyzed by the limma package of R. The levels of 24 upregulated circRNAs were detected in two independent cohorts by RT-qPCR. Interactions between miRNAs and circRNAs were predicted through bioinformatics and confirmed using a dual luciferase assay. The circularity and subcellular localization of circRNA-080968 was examined by northern blotting after digestion with RNase-R and in situ hybridization. Cell migration and proliferation were examined using Transwell and MTT assays. The apoptotic cells were detected by flow cytometry. RESULTS The level of circRNA-080968 was upregulated in DFU tissues compared to that of non-DFU samples and normal human wounds. CircRNA-080968 was mainly localized in the cytoplasm and its overexpression inhibited the migration and promoted the proliferation of keratinocytes. MiR-326 and miR-766-3p were identified to interact with and be negatively correlated with circRNA-080968 levels. Increased glucose upregulated circRNA-080968, and its overexpression accelerated the degradation of both miR-326 and miR-766-3p. Reduced levels of miR-326 and miR-766-3p upregulated the expression of several genes controlling cell adhesion and proliferation which are related to the pathogenesis of DFU. CONCLUSIONS The upregulation of circRNA-080968 in DFU induced the degradation of miR-326 and miR-766-3p, which further repressed the migration and increased the proliferation of keratinocytes.
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Affiliation(s)
- Zhonghua Fu
- Burn Plastic and Wound Restorative Medicine Center, The First Affilicated Hospital of Nanchang University, 330006 Jiangxi, China
| | - Zhengying Jiang
- Burn Plastic and Wound Restorative Medicine Center, The First Affilicated Hospital of Nanchang University, 330006 Jiangxi, China
| | - Xincheng Liao
- Burn Plastic and Wound Restorative Medicine Center, The First Affilicated Hospital of Nanchang University, 330006 Jiangxi, China
| | - Mingzhuo Liu
- Burn Plastic and Wound Restorative Medicine Center, The First Affilicated Hospital of Nanchang University, 330006 Jiangxi, China
| | - Guanghua Guo
- Burn Plastic and Wound Restorative Medicine Center, The First Affilicated Hospital of Nanchang University, 330006 Jiangxi, China
| | - Xin Wang
- Burn Plastic and Wound Restorative Medicine Center, The First Affilicated Hospital of Nanchang University, 330006 Jiangxi, China
| | - Guangping Yang
- Burn Plastic and Wound Restorative Medicine Center, The First Affilicated Hospital of Nanchang University, 330006 Jiangxi, China
| | - Zhiyu Zhou
- College of Traditional Chinese Medicine, Jiangxi University of Chinese Medicine, 330004 Jiangxi, China
| | - Long Hu
- Department of Pathology, The First Affilicated Hospital of Nanchang University, 330006 Jiangxi, China.
| | - Zhenfang Xiong
- Department of Pathology, The First Affilicated Hospital of Nanchang University, 330006 Jiangxi, China.
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Nathaniel E, Ikram J, James A, Obaid B, Zahid A, Ahmed Z, Wazir DK, Muhammad Farooq Wahab Q, Varrassi G, Kumar S, Khatri M. Molecular Characterization and Antibiotic Susceptibility Pattern of Bacterial Strains Isolated From Wound of Patients With Diabetes. Cureus 2023; 15:e47681. [PMID: 38021964 PMCID: PMC10673648 DOI: 10.7759/cureus.47681] [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: 10/03/2023] [Accepted: 10/25/2023] [Indexed: 12/01/2023] Open
Abstract
BACKGROUND Diabetic wound infections are susceptible to various pathogens, particularly bacteria, due to the immunocompromised state of diabetic patients. Staphylococcus aureus is frequently implicated in diabetic wounds. To ascertain the presence of multiple antibiotic resistance in bacterial pathogens derived from diabetic wound infections, a comprehensive analysis is required. MATERIALS AND METHODS The present cross-sectional investigation was carried out at a tertiary care facility. The samples were collected in aseptic conditions from the Endocrinology unit, specifically from local in-hospital patients (n=140). These samples were then assessed for their susceptibility to the commonly used antibacterial medications within the study area. The specimens were obtained from the lesions of individuals diagnosed with diabetes. The subjects were subjected to inoculation using various media and cultures. RESULTS The findings of this study revealed that a collective sum of 122 bacterial isolates was acquired. The conclusions of the antibiotic susceptibility analysis revealed that the gram-positive isolates had a higher level of resistance to penicillin G (93.18%). However, they demonstrated sensitivity to vancomycin (100%) and linezolid (LZD) (95%). The gram-negative isolates exhibited complete resistance, at a rate of 100%, to penicillin, specifically amoxicillin (AMC), as well as to sulfonamides, such as sulfamethoxazole/trimethoprim (SXT), which belong to the antibiotic classes mentioned. CONCLUSION In conclusion, there has been a notable rise in antibiotic resistance.
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Affiliation(s)
| | - Jibran Ikram
- Orthopaedics and Trauma, Rehman Medical Institute, Peshawar, PAK
| | - Aimen James
- Dermatology, Rehman Medical Institute, Peshawar, PAK
| | | | - Ayesha Zahid
- Surgery, Rehman Medical Institute, Peshawar, PAK
| | - Zeeshan Ahmed
- Medicine, Hayatabad Medical Complex Peshawar, Peshawar, PAK
| | | | | | | | - Satesh Kumar
- Medicine and Surgery, Shaheed Mohtarma Benazir Bhutto Medical College, Karachi, PAK
| | - Mahima Khatri
- Medicine and Surgery, Dow University of Health Sciences, Karachi, PAK
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20
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Jiang P, Li Q, Luo Y, Luo F, Che Q, Lu Z, Yang S, Yang Y, Chen X, Cai Y. Current status and progress in research on dressing management for diabetic foot ulcer. Front Endocrinol (Lausanne) 2023; 14:1221705. [PMID: 37664860 PMCID: PMC10470649 DOI: 10.3389/fendo.2023.1221705] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Accepted: 07/31/2023] [Indexed: 09/05/2023] Open
Abstract
Diabetic foot ulcer (DFU) is a major complication of diabetes and is associated with a high risk of lower limb amputation and mortality. During their lifetime, 19%-34% of patients with diabetes can develop DFU. It is estimated that 61% of DFU become infected and 15% of those with DFU require amputation. Furthermore, developing a DFU increases the risk of mortality by 50%-68% at 5 years, higher than some cancers. Current standard management of DFU includes surgical debridement, the use of topical dressings and wound decompression, vascular assessment, and glycemic control. Among these methods, local treatment with dressings builds a protective physical barrier, maintains a moist environment, and drains the exudate from DFU wounds. This review summarizes the development, pathophysiology, and healing mechanisms of DFU. The latest research progress and the main application of dressings in laboratory and clinical stage are also summarized. The dressings discussed in this review include traditional dressings (gauze, oil yarn, traditional Chinese medicine, and others), basic dressings (hydrogel, hydrocolloid, sponge, foam, film agents, and others), bacteriostatic dressings, composite dressings (collagen, nanomaterials, chitosan dressings, and others), bioactive dressings (scaffold dressings with stem cells, decellularized wound matrix, autologous platelet enrichment plasma, and others), and dressings that use modern technology (3D bioprinting, photothermal effects, bioelectric dressings, microneedle dressings, smart bandages, orthopedic prosthetics and regenerative medicine). The dressing management challenges and limitations are also summarized. The purpose of this review is to help readers understand the pathogenesis and healing mechanism of DFU, help physicians select dressings correctly, provide an updated overview of the potential of biomaterials and devices and their application in DFU management, and provide ideas for further exploration and development of dressings. Proper use of dressings can promote DFU healing, reduce the cost of treating DFU, and reduce patient pain.
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Affiliation(s)
- Pingnan Jiang
- Department of Endocrinology and Metabolism, the Second Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Qianhang Li
- Department of Endocrinology and Metabolism, the Second Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Yanhong Luo
- Department of Endocrinology and Metabolism, the Second Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Feng Luo
- Department of Endocrinology and Metabolism, the Second Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Qingya Che
- Department of Endocrinology and Metabolism, the Second Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Zhaoyu Lu
- Department of Endocrinology and Metabolism, the Second Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Shuxiang Yang
- Department of Endocrinology and Metabolism, the Second Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Yan Yang
- Department of Endocrinology and Metabolism, the Second Affiliated Hospital of Zunyi Medical University, Zunyi, China
- Department of Endocrinology and Metabolism, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China
| | - Xia Chen
- Department of Endocrinology, Kweichow Moutai Hospital, Renhuai, Guizhou, China
| | - Yulan Cai
- Department of Endocrinology and Metabolism, the Second Affiliated Hospital of Zunyi Medical University, Zunyi, China
- Department of Endocrinology and Metabolism, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China
- Department of Endocrinology, Kweichow Moutai Hospital, Renhuai, Guizhou, China
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Panjaitan NSD, Hartanti MD, Rinendyaputri R. Response on Article "A Sustained-Release Nanosystem with MRSA Biofilm-Dispersing and -Eradicating Abilities Accelerates Diabetic Ulcer Healing" [Letter]. Int J Nanomedicine 2023; 18:4633-4634. [PMID: 37600120 PMCID: PMC10438432 DOI: 10.2147/ijn.s434271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Accepted: 08/09/2023] [Indexed: 08/22/2023] Open
Affiliation(s)
- Novaria Sari Dewi Panjaitan
- Center for Biomedical Research, Research Organization for Health, National Research and Innovation Agency (BRIN), Cibinong Science Center, Cibinong - Bogor, West Java, Indonesia
| | - Monica Dwi Hartanti
- Center for Biomedical Research, Research Organization for Health, National Research and Innovation Agency (BRIN), Cibinong Science Center, Cibinong - Bogor, West Java, Indonesia
- Department of Medical Biology, Faculty of Medicine, Universitas Trisakti, West Jakarta, Indonesia
| | - Ratih Rinendyaputri
- Center for Biomedical Research, Research Organization for Health, National Research and Innovation Agency (BRIN), Cibinong Science Center, Cibinong - Bogor, West Java, Indonesia
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22
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Young MJ, Hall LML, Merabishvilli M, Pirnay JP, Clark JR, Jones JD. Phage Therapy for Diabetic Foot Infection: A Case Series. Clin Ther 2023; 45:797-801. [PMID: 37442654 DOI: 10.1016/j.clinthera.2023.06.009] [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: 01/24/2023] [Revised: 04/28/2023] [Accepted: 06/07/2023] [Indexed: 07/15/2023]
Abstract
PURPOSE Infected diabetic foot ulcers can be difficult to treat and, despite appropriate antibiotic therapy, some diabetic foot infections (DFIs) require amputation. Bacteriophages (phages) are viruses that infect and kill bacteria. Phage therapy has been repeatedly used to successfully treat DFIs and other chronic wounds. METHODS This article reports the provision of topical adjunctive anti-staphylococcal phage therapy to 10 patients with DFI at high risk of amputation at two UK hospitals as part of clinical care; tolerability and efficacy were clinically assessed. FINDINGS The opinion of the experienced clinical teams caring for these patients was that 9 of the 10 patients appeared to benefit from adjunctive phage therapy. No adverse effects were reported by clinicians or patients. In 6 of 10 patients the clinical impression was that phage therapy facilitated clinical resolution of infection and limb salvage. Resolution of soft tissue infection was observed in a 7th patient but unresolved osteomyelitis required amputation. An 8th patient demonstrated eradication of Staphylococcus aureus from a polymicrobial infection and a 9th showed signs of clinical improvement before early cessation of phage therapy due to an unrelated event. One patient, with a weakly susceptible S aureus isolate, had no significant response. IMPLICATIONS This report describes the largest application of phage therapy in the United Kingdom to date and the first application of phage therapy for DFI in the United Kingdom and offers subjective hints toward impressive tolerability and efficacy. Phage therapy has the potential to transform the prevention and treatment of DFIs.
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Affiliation(s)
- Matthew J Young
- Diabetes Foot Clinic, Out Patient Department 2, Royal Infirmary of Edinburgh, Edinburgh, United Kingdom
| | - Lesley M L Hall
- Diabetes and Endocrinology, Queen Elizabeth University Hospital, Govan, Glasgow, United Kingdom
| | - Maya Merabishvilli
- Laboratory for Molecular and Cellular Technology, Queen Astrid Military Hospital, Brussels, Belgium
| | - Jean-Paul Pirnay
- Laboratory for Molecular and Cellular Technology, Queen Astrid Military Hospital, Brussels, Belgium
| | | | - Joshua D Jones
- Infection Medicine, Edinburgh Medical School: Biomedical Sciences, University of Edinburgh, Edinburgh, United Kingdom.
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23
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Mariani F, Galvan EM. Staphylococcus aureus in Polymicrobial Skinand Soft Tissue Infections: Impact of Inter-Species Interactionsin Disease Outcome. Antibiotics (Basel) 2023; 12:1164. [PMID: 37508260 PMCID: PMC10376372 DOI: 10.3390/antibiotics12071164] [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: 06/14/2023] [Revised: 07/05/2023] [Accepted: 07/06/2023] [Indexed: 07/30/2023] Open
Abstract
Polymicrobial biofilms provide a complex environment where co-infecting microorganisms can behave antagonistically, additively, or synergistically to alter the disease outcome compared to monomicrobial infections. Staphylococcus aureus skin and soft tissue infections (Sa-SSTIs) are frequently reported in healthcare and community settings, and they can also involve other bacterial and fungal microorganisms. This polymicrobial aetiology is usually found in chronic wounds, such as diabetic foot ulcers, pressure ulcers, and burn wounds, where the establishment of multi-species biofilms in chronic wounds has been extensively described. This review article explores the recent updates on the microorganisms commonly found together with S. aureus in SSTIs, such as Pseudomonas aeruginosa, Escherichia coli, Enterococcus spp., Acinetobacter baumannii, and Candida albicans, among others. The molecular mechanisms behind these polymicrobial interactions in the context of infected wounds and their impact on pathogenesis and antimicrobial susceptibility are also revised.
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Affiliation(s)
- Florencia Mariani
- Laboratorio de Patogénesis Bacteriana, Departamento de Investigaciones Bioquímicas y Farmacéuticas, Centro de Estudios Biomédicos, Biotecnológicos, Ambientales y Diagnóstico (CEBBAD), Universidad Maimónides, Hidalgo 775, Buenos Aires C1405, Argentina;
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires A4400, Argentina
| | - Estela Maria Galvan
- Laboratorio de Patogénesis Bacteriana, Departamento de Investigaciones Bioquímicas y Farmacéuticas, Centro de Estudios Biomédicos, Biotecnológicos, Ambientales y Diagnóstico (CEBBAD), Universidad Maimónides, Hidalgo 775, Buenos Aires C1405, Argentina;
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires A4400, Argentina
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24
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Rajab AAH, Hegazy WAH. What’s old is new again: Insights into diabetic foot microbiome. World J Diabetes 2023; 14:680-704. [PMID: 37383589 PMCID: PMC10294069 DOI: 10.4239/wjd.v14.i6.680] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Revised: 02/20/2023] [Accepted: 04/10/2023] [Indexed: 06/14/2023] Open
Abstract
Diabetes is a chronic disease that is considered one of the most stubborn global health problems that continues to defy the efforts of scientists and physicians. The prevalence of diabetes in the global population continues to grow to alarming levels year after year, causing an increase in the incidence of diabetes complications and health care costs all over the world. One major complication of diabetes is the high susceptibility to infections especially in the lower limbs due to the immunocompromised state of diabetic patients, which is considered a definitive factor in all cases. Diabetic foot infections continue to be one of the most common infections in diabetic patients that are associated with a high risk of serious complications such as bone infection, limb amputations, and life-threatening systemic infections. In this review, we discussed the circumstances associated with the high risk of infection in diabetic patients as well as some of the most commonly isolated pathogens from diabetic foot infections and the related virulence behavior. In addition, we shed light on the different treatment strategies that aim at eradicating the infection.
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Affiliation(s)
- Azza A H Rajab
- Department of Microbiology and Immunology, Faculty of Pharmacy, Zagazig University, Zagzig 44511, Egypt
| | - Wael A H Hegazy
- Department of Microbiology and Immunology, Faculty of Pharmacy, Zagazig University, Zagzig 44511, Egypt
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25
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Simões LC, Simões M. Contribution to Understanding the Mechanisms Involved in Biofilm Formation, Tolerance and Control. Int J Mol Sci 2023; 24:ijms24119475. [PMID: 37298427 DOI: 10.3390/ijms24119475] [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: 05/05/2023] [Accepted: 05/24/2023] [Indexed: 06/12/2023] Open
Abstract
Biofilms constitute a protected mode of growth that allows the colonizing microbial cells to survive in hostile environments, even when an antimicrobial agent is present. The scientific community has come to understand many things about the growth dynamics and behavior of microbial biofilms. It is now accepted that biofilm formation is a multifactorial process that starts with the adhesion of individual cells and (auto-)coaggregates of cells to a surface. Then, attached cells grow, reproduce and secrete insoluble extracellular polymeric substances. As the biofilm matures, biofilm detachment and growth processes come into balance, such that the total amount of biomass on the surface remains approximately constant in time. The detached cells retain the phenotype of the biofilm cells, which facilitates the colonization of neighboring surfaces. The most common practice to eliminate unwanted biofilms is the application of antimicrobial agents. However, conventional antimicrobial agents often show inefficacy in the control of biofilms. Much remains to be understood in the biofilm formation process and in the development of effective strategies for biofilm prevention and control. The articles contained in this Special Issue deal with biofilms of some important bacteria (including pathogens such as Escherichia coli, Pseudomonas aeruginosa and Staphylococcus aureus) and fungi (Candida tropicalis), providing novel insights into their formation mechanisms and implications, together with novel methods (e.g., use of chemical conjugates and combinations of molecules) that can be used to disrupt the biofilm structure and kill the colonizing cells.
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Affiliation(s)
- Lúcia Chaves Simões
- CEB-Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
- LABBELS-Associate Laboratory, 4710-057 Braga, Portugal
| | - Manuel Simões
- LEPABE, Department of Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, s/n, 4200-465 Porto, Portugal
- ALiCE-Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
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26
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Mariani F, Juarez GE, Barberis C, Veiga F, Vay C, Galvan EM. Interspecies interactions in mixed-species biofilms formed by Enterococcus faecalis and gram-negative bacteria isolated from polymicrobial diabetic foot ulcers. BIOFOULING 2023; 39:579-590. [PMID: 37482939 DOI: 10.1080/08927014.2023.2236949] [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: 11/16/2022] [Revised: 07/07/2023] [Accepted: 07/10/2023] [Indexed: 07/25/2023]
Abstract
Diabetic foot ulcers (DFU) are exacerbated by bacterial colonisation. Here, a high prevalence of Enterococcus faecalis was observed in DFU patients from an Argentinean hospital. E. faecalis was frequently co-isolated with Escherichia coli, Morganella morganii, and Pseudomonas aeruginosa. The effect of interspecies interactions on bacterial growth was investigated in mixed-species macrocolony biofilms developed in Lubbock-Glc-agar. Similar cell counts were found for E. faecalis and M. morganii growing in mixed and single-species biofilms. An E. faecalis strain showed 1 Log higher cell counts in mixed biofilms with E. coli. Remarkably, E. faecalis strains showed 2 to 4 Log higher cell counts in mixed biofilms with P. aeruginosa. This effect was not observed in planktonic growth or biofilms developed in tryptic soy agar. The present findings reveal bacterial interactions that benefit E. faecalis in mixed-species biofilms, mainly with P. aeruginosa, in a medium that partially mimics the nutrients found in DFU.
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Affiliation(s)
- Florencia Mariani
- Laboratorio de Patogénesis Bacteriana, Departamento de Investigaciones Bioquímicas y Farmacéuticas, Centro de Estudios Biomédicos, Biotecnológicos, Ambientales y Diagnóstico (CEBBAD), Universidad Maimónides, Ciudad Autónoma de Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Ciudad Autónoma de Buenos Aires, Argentina
| | - Guillermo E Juarez
- Laboratorio de Patogénesis Bacteriana, Departamento de Investigaciones Bioquímicas y Farmacéuticas, Centro de Estudios Biomédicos, Biotecnológicos, Ambientales y Diagnóstico (CEBBAD), Universidad Maimónides, Ciudad Autónoma de Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Ciudad Autónoma de Buenos Aires, Argentina
| | - Claudia Barberis
- Cátedra de Microbiología Clínica, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina
- Instituto de Fisiopatología y Bioquímica Clínica, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina
| | - Florencia Veiga
- Cátedra de Microbiología Clínica, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina
- Instituto de Fisiopatología y Bioquímica Clínica, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina
| | - Carlos Vay
- Cátedra de Microbiología Clínica, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina
- Instituto de Fisiopatología y Bioquímica Clínica, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina
| | - Estela M Galvan
- Laboratorio de Patogénesis Bacteriana, Departamento de Investigaciones Bioquímicas y Farmacéuticas, Centro de Estudios Biomédicos, Biotecnológicos, Ambientales y Diagnóstico (CEBBAD), Universidad Maimónides, Ciudad Autónoma de Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Ciudad Autónoma de Buenos Aires, Argentina
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27
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Afonso AC, Sousa M, Pinto AR, Cotovio M, Simões M, Saavedra MJ. Biofilm Production by Critical Antibiotic-Resistant Pathogens from an Equine Wound. Animals (Basel) 2023; 13:ani13081342. [PMID: 37106905 PMCID: PMC10135353 DOI: 10.3390/ani13081342] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 04/11/2023] [Accepted: 04/12/2023] [Indexed: 04/29/2023] Open
Abstract
As in human medicine, in veterinary medicine, chronic wounds are often related to polymicrobial infections and the presence of a biofilm, which compromises the effectiveness of therapeutic approaches. In this study, a Lusitano mare presented a 21-day-old chronic wound that was only being treated with an antiseptic. A swab sample was collected, and three isolates of Staphylococcus aureus and one of Pseudomonas aeruginosa were isolated. S. aureus did not show resistance to a panel of antibiotics. However, the P. aeruginosa isolate showed a resistance profile to carbapenems and fluoroquinolones, which may suggest a cross-resistance between antiseptic and antibiotics, given that no antibiotic therapy was applied to the wound or the mare in the previous year. Further experiments were conducted to assess the ability of the isolates to form biofilms, and to ascertain their susceptibility to gentamicin. The results demonstrated that the isolates produced biofilms. Gentamicin at the minimum inhibitory concentration (MIC) and 10× MIC caused biofilm removal between 59.3% and 85.7%, with the highest removal percentage being obtained for the P. aeruginosa isolate (at 10× MIC concentration). This study reveals that an equine wound was colonized by antibiotic resistant bacteria, and that all the wound colonizers could form biofilms, demonstrating the relevance of an adequate diagnosis and treatment when there is a suspicion of a biofilm-infected wound. It also highlights the possibility of resistance transmission between animals, animals and humans, or animals and the environment.
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Affiliation(s)
- Ana C Afonso
- LEPABE-Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, Department of Chemical Engineering, University of Porto, 4200-465 Porto, Portugal
- ALiCE-Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, 4200-465 Porto, Portugal
- CITAB-Centre for the Research and Technology of Agro-Environmental and Biological Sciences and Inov4Agro, University of Trás-os-Montes e Alto Douro, 5000-801 Vila Real, Portugal
| | - Mariana Sousa
- LEPABE-Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, Department of Chemical Engineering, University of Porto, 4200-465 Porto, Portugal
- ALiCE-Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, 4200-465 Porto, Portugal
| | - Ana Rita Pinto
- CITAB-Centre for the Research and Technology of Agro-Environmental and Biological Sciences and Inov4Agro, University of Trás-os-Montes e Alto Douro, 5000-801 Vila Real, Portugal
| | - Mário Cotovio
- Department of Veterinary Sciences-Antimicrobials, Biocides & Biofilms Unit, University of Trás-os-Montes and Alto Douro, 5000-801 Vila Real, Portugal
- CECAV-Veterinary and Animal Research Centre and Associate Laboratory for Animal and Veterinary Science (AL4AnimalS), University of Trás-os-Montes and Alto Douro, 5000-801 Vila Real, Portugal
| | - Manuel Simões
- LEPABE-Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, Department of Chemical Engineering, University of Porto, 4200-465 Porto, Portugal
- ALiCE-Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, 4200-465 Porto, Portugal
| | - Maria José Saavedra
- CITAB-Centre for the Research and Technology of Agro-Environmental and Biological Sciences and Inov4Agro, University of Trás-os-Montes e Alto Douro, 5000-801 Vila Real, Portugal
- Department of Veterinary Sciences-Antimicrobials, Biocides & Biofilms Unit, University of Trás-os-Montes and Alto Douro, 5000-801 Vila Real, Portugal
- CECAV-Veterinary and Animal Research Centre and Associate Laboratory for Animal and Veterinary Science (AL4AnimalS), University of Trás-os-Montes and Alto Douro, 5000-801 Vila Real, Portugal
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28
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Biopolymers in diabetic wound care management: a potential substitute to traditional dressings. Eur Polym J 2023. [DOI: 10.1016/j.eurpolymj.2023.111979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
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29
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Rayate AS, Nagoba BS, Mumbre SS, Mavani HB, Gavkare AM, Deshpande AS. Current scenario of traditional medicines in management of diabetic foot ulcers: A review. World J Diabetes 2023; 14:1-16. [PMID: 36684382 PMCID: PMC9850800 DOI: 10.4239/wjd.v14.i1.1] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 11/04/2022] [Accepted: 12/06/2022] [Indexed: 01/10/2023] Open
Abstract
Diabetic foot infections and diabetic foot ulcers (DFU) cause significant suffering and are often recurring. DFU have three important pathogenic factors, namely, microangiopathy causing local tissue anoxia, neuropathy making the foot prone to injuries from trivial trauma, and local tissue hyperglycaemia favouring infection and delaying the wound healing. DFU have been the leading cause for non-traumatic amputations of part or whole of the limb. Western medicines focus mainly on euglycaemia, antimicrobials, debridement and wound cover with grafts, and off-loading techniques. Advances in euglycaemic control, foot care and footwear, systemic antimicrobial therapy, and overall health care access and delivery, have resulted in an overall decrease in amputations. However, the process of wound care after adequate debridement remains a major cost burden globally, especially in developing nations. This process revolves around two basic concerns regarding control/eradication of local infection and promotion of faster healing in a chronic DFU without recurrence. Wound modulation with various dressings and techniques are often a costly affair. Some aspects of the topical therapy with modern/Western medicines are frequently not addressed. Cost of and compliance to these therapies are important as both the wounds and their treatment are “chronic.” Naturally occurring agents/medications from traditional medicine systems have been used frequently in different cultures and nations, though without adequate clinical base/relevance. Traditional Chinese medicine involves restoring yin-yang balance, regulating the ‘chi’, and promoting local blood circulation. Traditional medicines from India have been emphasizing on ‘naturally’ available products to control wound infection and promote all the aspects of wound healing. There is one more group of chemicals which are not pharmaceutical agents but can create acidic milieu in the wound to satisfy the above-mentioned basic concerns. Various natural and plant derived products (e.g., honey, aloe vera, oils, and calendula) and maggots are also used for wound healing purposes. We believe that patients with a chronic wound are so tired physically, emotionally, and financially that they usually accept native traditional medicine which has the same cultural base, belief, and faith. Many of these products have never been tested in accordance to “evidence-based medicine.” There are usually case reports and experience-based reports about these products. Recently, there have been some trials (in vitro and in vivo) to verify the claims of usage of traditional medicines in management of DFU. Such studies show that these natural products enhance the healing process by controlling infection, stimulating granulation tissue, antimicrobial action, promoting fibroblastic activity and collagen deposition, etc. In this review, we attempt to study and analyse the available literature on results of topical traditional medicines, which are usually advocated in the management of DFU. An integrated and ‘holistic’ approach of both modern and traditional medicine may be more acceptable to the patient, cost effective, and easy to administer and monitor. This may also nevertheless lead to further improvement in quality of life and decrease in the rates of amputations for DFU.
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Affiliation(s)
- Abhijit S Rayate
- Department of Surgery, Maharashtra Institute of Medical Sciences & Research (Medical College), Latur 413531, India
| | - Basavraj S Nagoba
- Department of Microbiology, Maharashtra Institute of Medical Sciences & Research (Medical College), Latur 413531, India
| | - Sachin S Mumbre
- Department of Community Medicine, Ashwini Rural Medical College, Solapur 413006, India
| | - Hardi B Mavani
- Department of Surgery, Maharashtra Institute of Medical Sciences & Research (Medical College), Latur 413531, India
| | - Ajay M Gavkare
- Department of Physiology, Maharashtra Institute of Medical Sciences & Research (Medical College), Latur 413531, India
| | - Advait S Deshpande
- Department of Surgery, Maharashtra Institute of Medical Sciences & Research (Medical College), Latur 413531, India
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Anju VT, Busi S, Imchen M, Kumavath R, Mohan MS, Salim SA, Subhaswaraj P, Dyavaiah M. Polymicrobial Infections and Biofilms: Clinical Significance and Eradication Strategies. Antibiotics (Basel) 2022; 11:antibiotics11121731. [PMID: 36551388 PMCID: PMC9774821 DOI: 10.3390/antibiotics11121731] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/21/2022] [Accepted: 11/24/2022] [Indexed: 12/03/2022] Open
Abstract
Biofilms are population of cells growing in a coordinated manner and exhibiting resistance towards hostile environments. The infections associated with biofilms are difficult to control owing to the chronicity of infections and the emergence of antibiotic resistance. Most microbial infections are contributed by polymicrobial or mixed species interactions, such as those observed in chronic wound infections, otitis media, dental caries, and cystic fibrosis. This review focuses on the polymicrobial interactions among bacterial-bacterial, bacterial-fungal, and fungal-fungal aggregations based on in vitro and in vivo models and different therapeutic interventions available for polymicrobial biofilms. Deciphering the mechanisms of polymicrobial interactions and microbial diversity in chronic infections is very helpful in anti-microbial research. Together, we have discussed the role of metagenomic approaches in studying polymicrobial biofilms. The outstanding progress made in polymicrobial research, especially the model systems and application of metagenomics for detecting, preventing, and controlling infections, are reviewed.
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Affiliation(s)
- V T Anju
- Department of Biochemistry and Molecular Biology, School of Life Sciences, Pondicherry University, Puducherry 605014, India
| | - Siddhardha Busi
- Department of Microbiology, School of Life Sciences, Pondicherry University, Puducherry 605014, India
- Correspondence:
| | - Madangchanok Imchen
- Department of Microbiology, School of Life Sciences, Pondicherry University, Puducherry 605014, India
| | - Ranjith Kumavath
- Department of Genomic Science, School of Biological Sciences, Central University of Kerala, Kerala 671316, India
- Department of Biotechnology, School of Life Sciences, Pondicherry University, Puducherry 605014, India
| | - Mahima S. Mohan
- Department of Microbiology, School of Life Sciences, Pondicherry University, Puducherry 605014, India
| | - Simi Asma Salim
- Department of Microbiology, School of Life Sciences, Pondicherry University, Puducherry 605014, India
| | - Pattnaik Subhaswaraj
- Department of Biotechnology and Bioinformatics, Sambalpur University, Burla, Sambalpur 768019, India
| | - Madhu Dyavaiah
- Department of Biochemistry and Molecular Biology, School of Life Sciences, Pondicherry University, Puducherry 605014, India
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31
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Tan ZX, Tao R, Li SC, Shen BZ, Meng LX, Zhu ZY. Role of defensins in diabetic wound healing. World J Diabetes 2022; 13:962-971. [PMID: 36437862 PMCID: PMC9693740 DOI: 10.4239/wjd.v13.i11.962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 10/22/2022] [Accepted: 10/31/2022] [Indexed: 11/11/2022] Open
Abstract
The adverse consequences resulting from diabetes are often presented as severe complications. Diabetic wounds are one of the most commonly occurring complications in diabetes, and the control and treatment of this is costly. Due to a series of pathophysiological mechanisms, diabetic wounds remain in the inflammatory phase for a prolonged period of time, and face difficulty in entering the proliferative phase, thus leading to chronic non-healing wounds. The current consensus on the treatment of diabetic wounds is through multidisciplinary comprehensive management, however, standard wound treatment methods are still limited and therefore, more effective methods are required. In recent years, defensins have been found to play diverse roles in a variety of diseases; however, the molecular mechanisms underlying these activities are still largely unknown. Defensins can be constitutively or inductively produced in the skin, therefore, their local distribution is affected by the microenvironment of these diabetic wounds. Current evidence suggests that defensins are involved in the diabetic wound pathogenesis, and can potentially promote the early completion of each stage, thus making research on defensins a promising area for developing novel treatments for diabetic wounds. In this review, we describe the complex function of human defensins in the development of diabetic wounds, and suggest potential thera-peutic benefits.
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Affiliation(s)
- Zhi-Xiang Tan
- Department of Plastic Surgery, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei Province, China
| | - Rui Tao
- Department of Plastic Surgery, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei Province, China
| | - Si-Cheng Li
- Department of Plastic Surgery, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei Province, China
| | - Bing-Zheng Shen
- Department of Pharmacy, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei Province, China
| | - Lan-Xia Meng
- Department of Neurology, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei Province, China
| | - Zhan-Yong Zhu
- Department of Plastic Surgery, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei Province, China
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32
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Patton D, Avsar P, Wilson P, Mairghani M, O'Connor T, Nugent L, Moore Z. Treatment of diabetic foot ulcers: review of the literature with regard to the TIME clinical decision support tool. J Wound Care 2022; 31:771-779. [PMID: 36113541 DOI: 10.12968/jowc.2022.31.9.771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
OBJECTIVE The aim of this clinically orientated paper is to offer an overview of diabetic foot ulcer (DFU) dressings generally, and more specifically, their use in the treatment of DFUs. METHOD The TIME clinical decision support tool (CDST) has been used as a clinical tool that can help clinicians bring together the different aspects of dressings for DFU treatment into a holistic approach to patient care. RESULTS DFUs are often difficult to heal, are painful and impact negatively on the individual's quality of life. Most DFU dressings are designed to support the healing of hard-to-heal wounds and represent one part of the management of DFUs. Apart from providing a moist environment, absorbing increased exudate, enhancing granulation and assisting in autolysis, the dressings need to be cost-effective. Wound dressing selection is based on clinical knowledge that ensures the dressing is most appropriate for the individual and the wound, taking into account the comorbidities that the individual may have. CONCLUSION This paper has highlighted how the use of the TIME CDST model can enhance clinical care and is a further tool clinicians should consider when developing and executing DFU treatment plans. Future research needs to focus on large multicentre studies using robust methodologies, given the current gaps in the evidence, to determine the effectiveness of dressing products for DFUs.
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Affiliation(s)
- Declan Patton
- School of Nursing & Midwifery, Royal College of Surgeons in Ireland (RCSI) University of Medicine and Health Sciences, Dublin.,Skin, Wounds and Trauma Research Centre, School of Nursing and Midwifery. RCSI University of Medicine and Health Sciences, Dublin.,Adjunct Associate Professor, Fakeeh College of Health Sciences, Jeddah, Saudi Arabia.,Honorary Senior Fellow, Faculty of Science, Medicine and Health, University of Wollongong, Australia.,Adjunct Professor, Griffith University, Australia
| | - Pinar Avsar
- Skin, Wounds and Trauma Research Centre, School of Nursing and Midwifery. RCSI University of Medicine and Health Sciences, Dublin
| | - Pauline Wilson
- Skin, Wounds and Trauma Research Centre, School of Nursing and Midwifery. RCSI University of Medicine and Health Sciences, Dublin
| | - Maisoon Mairghani
- Public Health and Epidemiology, RCSI University of Medicine and Health Sciences
| | - Tom O'Connor
- School of Nursing & Midwifery, Royal College of Surgeons in Ireland (RCSI) University of Medicine and Health Sciences, Dublin.,Skin, Wounds and Trauma Research Centre, School of Nursing and Midwifery. RCSI University of Medicine and Health Sciences, Dublin.,Adjunct Professor, Griffith University, Australia.,Honorary Professor, Lida Institute, Shanghai, China.,Professor, Fakeeh College of Health Sciences
| | - Linda Nugent
- School of Nursing & Midwifery, Royal College of Surgeons in Ireland (RCSI) University of Medicine and Health Sciences, Dublin.,Adjunct Assistant Professor, Fakeeh College of Health Sciences, Jeddah, Saudi Arabia
| | - Zena Moore
- School of Nursing & Midwifery, Royal College of Surgeons in Ireland (RCSI) University of Medicine and Health Sciences, Dublin.,Skin, Wounds and Trauma Research Centre, School of Nursing and Midwifery. RCSI University of Medicine and Health Sciences, Dublin.,Honorary Professor, Lida Institute, Shanghai, China.,Professor, Fakeeh College of Health Sciences.,Professor, Department of Public Health, Faculty of Medicine and Health Sciences, Ghent University, Belgium.,Visiting Professor, University of Wales, Cardiff, UK
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Bekele F, Kelifa F, Sefera B. A male’s foot is being shot by an ulcer, not a gunshot! The magnitude and associated factors of diabetic foot ulcer among diabetes mellitus patients on chronic care follow-up of southwestern Ethiopian hospital: A cross-sectional study. Ann Med Surg (Lond) 2022; 79:104003. [PMID: 35860152 PMCID: PMC9289305 DOI: 10.1016/j.amsu.2022.104003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 06/08/2022] [Accepted: 06/12/2022] [Indexed: 11/23/2022] Open
Abstract
Background Diabetic foot ulcer (DFU) is one of the main complications of diabetes mellitus associated with major morbidity and mortality. DFU is the major cause of infection and lower extremity amputations in diabetic patients. Despite this, there was a scanty finding on associated factors of foot ulcer among diabetes mellitus. Methods Facility-based cross-sectional study was conducted among diabetes mellitus patients at BGH from August 1, 2021 - 30, 2021. The validated tool of the Nottingham Assessment of Functional Footcare (NAFF) was used to assess the diabetic foot self-care practice. Multivariate logistic regression was used to analyze the associations between the dependent variables and independent variables. Data were analyzed using a statistical package for social science (SPSS version 23). Results A total of 162 respondents with a response rate of 100% have participated in the study. Of the respondents, 88 (54.3%) were females and the mean and SD of the age were 35.8 and 12.70. The prevalence of diabetic foot ulcers in our study area was 24(14.81%). The results of the multivariable logistic regression analysis revealed that being a male (AOR = 2.143; 95% CI: 0.691–6.65), poor diabetic foot care practice (AOR = 3.761; 95CI: 1.188–11.90), and having a co-morbidity (AOR = 2.507; 95CI: 3.270–5.95)were more likely to experience a diabetic foot ulcer than their counterparts. Conclusion The prevalence of diabetic foot ulcers among diabetic patients in BGH was found to be high. The presence of comorbidity, being a male, and foot care practice were factors that predict the occurrences of diabetic foot ulcers. Therefore, the ongoing medical education on the foot care practices should be given to diabetes mellitus patients. Diabetic foot ulcer is one of the main complications in diabetes mellitus. Diabetic foot is defined as the presence of infection, ulceration and/or destruction of deep tissues. Diabetic foot ulcer is a major cause of infection and lower extremity amputations in diabetic patients.
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Comparative Study of Natural Antioxidants from Glycine max, Anethum graveolensand Pimpinella anisum Seed and Sprout Extracts Obtained by Ultrasound-Assisted Extraction. SEPARATIONS 2022. [DOI: 10.3390/separations9060152] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
The study aimed to evaluate the antioxidant potential of sprout and seed extracts from three species of plants, namely Glycine max (GMsp-sprouts, GMsd-seeds), Anethum graveolens (AGsp-sprouts, AGsd-seeds) and Pimpinella anisum (PAsp-sprouts, PAsd-seeds), which are widely accepted by consumers and have various applications in food flavoring, and also in natural medical treatments in the pharmaceutical industries. These plants are rich in valuable compounds that show a remarkable antioxidant power and are associated with many health benefits. Ethanol extracts were obtained by ultrasound-assisted extraction and they were comparatively evaluated for their in vitro antioxidant properties. The extracts were characterized by HPTLC, HPLC-DAD, total phenol content (TPC), total flavonoid content (TFC) analysis and antioxidant activities with different assays, such as total antioxidant capacity (TAC), 2,2′-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) radical cation decolorization assay (ABTS), 1,1-diphenyl 1-2-picryl-hydrazyl (DPPH) and iron binding ability of chelators. Our results showed that the sprout and seed extracts of the studied plants exhibited a high content of phytochemicals and promising antioxidant properties. The highest polyphenols content was detected for AGsd (53.02 ± 0.57 mg/g DW), PAsd (48.75 ± 0.34 mg/g DW) and the highest flavonoids content for PAsp (26.84 ± 0.57 mg/g DW). Moreover, the presence of valuable compounds was demonstrated by using HPTLC, FT-IR and HPLC-DAD techniques. In order to have a better understanding of the relationship between the biological properties and the electronic structure, a molecular modelling study of genistein was also conducted. Our approach to the comparative assessment of these three plant species was based on a priori knowledge from literature data; however, this study demonstrated that these plant extracts of seeds and also sprouts are excellent sources of natural antioxidants. Significant additional differences that were found in the phytochemical composition could be exploited in future research for pharmaceutical purposes.
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Hsu YJ, Nain A, Lin YF, Tseng YT, Li YJ, Sangili A, Srivastava P, Yu HL, Huang YF, Huang CC, Chang HT. Self-redox reaction driven in situ formation of Cu 2O/Ti 3C 2T x nanosheets boost the photocatalytic eradication of multi-drug resistant bacteria from infected wound. J Nanobiotechnology 2022; 20:235. [PMID: 35590324 PMCID: PMC9117998 DOI: 10.1186/s12951-022-01428-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Accepted: 04/20/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND MXenes with interesting optical and electrical properties have been attractive in biomedical applications such as antibacterial and anticancer agents, but their low photogeneration efficiency of reactive oxygen species (ROS) and poor stability are major concerns against microbial resistance. METHODS Water-dispersible single layer Ti3C2Tx-based MXene through etching tightly stacked MAX phase precursor using a minimally intensive layer delamination method. After addition of Cu(II) ions, the adsorbed Cu(II) ions underwent self-redox reactions with the surface oxygenated moieties of MXene, leading to in situ formation of Cu2O species to yield Cu2O/Ti3C2Tx nanosheets (heterostructures). RESULTS Under NIR irradiation, the Cu2O enhanced generation of electron-hole pairs, which boosted the photocatalytic production of superoxide and subsequent transformation into hydrogen peroxide. Broad-spectrum antimicrobial performance of Cu2O/Ti3C2Tx nanosheets with sharp edges is attributed to the direct contact-induced membrane disruption, localized photothermal therapy, and in situ generated cytotoxic free radicals. The minimum inhibitory concentration of Cu2O/Ti3C2Tx nanosheets reduced at least tenfold upon NIR laser irradiation compared to pristine Cu2O/Ti3C2Tx nanosheets. The Cu2O/Ti3C2Tx nanosheets were topically administrated on the methicillin-resistant Staphylococcus aureus (MRSA) infected wounds on diabetic mice. CONCLUSION Upon NIR illumination, Cu2O/Ti3C2Tx nanosheets eradicated MRSA and their associated biofilm to promote wound healing. The Cu2O/Ti3C2Tx nanosheets with superior catalytic and photothermal properties have a great scope as an effective antimicrobial modality for the treatment of infected wounds.
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Affiliation(s)
- Ya-Ju Hsu
- Department of Chemistry, National Taiwan University, Taipei, 10617, Taiwan
| | - Amit Nain
- Department of Chemistry, National Taiwan University, Taipei, 10617, Taiwan
| | - Yu-Feng Lin
- Department of Chemistry, National Taiwan University, Taipei, 10617, Taiwan
| | - Yu-Ting Tseng
- Department of Chemistry, National Taiwan University, Taipei, 10617, Taiwan
| | - Yu-Jia Li
- Department of Chemistry, National Taiwan University, Taipei, 10617, Taiwan
| | - Arumugam Sangili
- Department of Chemistry, National Taiwan University, Taipei, 10617, Taiwan
| | - Pavitra Srivastava
- School of Basic Sciences, Indian Institute of Technology, Kamand campus, Mandi, Himachal Pradesh, 175005, India
| | - Hui-Ling Yu
- Department of Chemistry, National Taiwan University, Taipei, 10617, Taiwan
| | - Yu-Fen Huang
- Institute of Analytical and Environmental Sciences, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Chih-Ching Huang
- Department of Bioscience and Biotechnology and Center of Excellence for the Oceans, National Taiwan Ocean University, Keelung, 202301, Taiwan. .,School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, 80708, Taiwan.
| | - Huan-Tsung Chang
- Department of Chemistry, National Taiwan University, Taipei, 10617, Taiwan.
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Screening of Natural Molecules as Adjuvants to Topical Antibiotics to Treat Staphylococcus aureus from Diabetic Foot Ulcer Infections. Antibiotics (Basel) 2022; 11:antibiotics11050620. [PMID: 35625264 PMCID: PMC9137705 DOI: 10.3390/antibiotics11050620] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 05/02/2022] [Accepted: 05/02/2022] [Indexed: 11/16/2022] Open
Abstract
Diabetic foot ulcers (DFUs) are a common result of a complex secondary complication of diabetes mellitus. More than half of DFUs become infected due to frequent colonization with Staphylococcus aureus. The use of topical antibiotics is proposed, especially in combination with natural adjuvants, to minimize the negative impacts caused by generalized use of systemic antibiotics. In this study, 13 different phytochemicals—namely chalcone, juglone, cinnamic acid, trigonelline, Furvina—and four nitrovinylfuran derivatives—guaiazulene, α-bisabolol, farnesol and nerolidol—were selected to be tested as antibiotic enhancers. After minimum inhibitory and bactericidal concentration (MIC and MBC) determination of each molecule against different strains of S. aureus, including clinical isolates from diabetic foot wounds (CECT 976, Xu212, SA 1199B, RN4220, MJMC102, MJMC109, MJMC110 and MJMC111), their potentiation effects on the antibiotics fusidic acid, mupirocin, gentamicin, oxacillin and methicillin were evaluated through the disc diffusion method. Farnesol at sub-MIC was able to restore the activity of methicillin and oxacillin on the MJMC102 and MJMC111 strains, as well as two MRSA clinical isolates, and potentiated the effect of the remaining antibiotics. The results obtained demonstrate the great potential for the topical application of phytochemicals and derivatives as antibiotic resistance modifier agents to combat multidrug resistance in bacterial wound infections.
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Pandey S, Shaif M, Ansari TM, Shamim A, Kushwaha P. Leveraging Potential of Nanotherapeutics in Management of Diabetic Foot Ulcer. Exp Clin Endocrinol Diabetes 2022; 130:678-686. [PMID: 35240693 DOI: 10.1055/a-1749-4909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Diabetic foot ulcers (DFUs) are the most common complications associated with diabetes mellitus. DFUs are displayed as open sores or wounds located on the bottom of the foot as a secondary complication of diabetes mellitus (DM). DFUs are associated with significant morbidity and mortality and can subsequently lead to hospitalization and lower limb amputation if not recognized and treated on time. An immense challenge to conventional treatments is caused by the chronic nature of diabetic foot syndrome and it has led to the emergence of nanotechnology-based therapeutics. The greatest advantages of these nanotherapeutics are their unique biological, chemical, and physical properties. The present review highlights the augmentation of bacterial infections relating to delayed healing of DFUs and the potential of nanotherapeutics such as polymeric nanoparticles, metallic nanoparticles, siRNA-based nanoparticles, lipid nanoparticles, and nanofibers in accelerating wound healing in diabetic foot ulcers.
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Affiliation(s)
- Supriya Pandey
- Faculty of Pharmacy, Integral University, Dasauli-Kursi Road, Lucknow, India
| | - Mohammad Shaif
- Faculty of Pharmacy, Integral University, Dasauli-Kursi Road, Lucknow, India
| | - Tarique M Ansari
- Faculty of Pharmacy, Integral University, Dasauli-Kursi Road, Lucknow, India
| | - Arshiya Shamim
- Faculty of Pharmacy, Integral University, Dasauli-Kursi Road, Lucknow, India
| | - Poonam Kushwaha
- Faculty of Pharmacy, Integral University, Dasauli-Kursi Road, Lucknow, India
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Biofilms in Surgical Site Infections: Recent Advances and Novel Prevention and Eradication Strategies. Antibiotics (Basel) 2022; 11:antibiotics11010069. [PMID: 35052946 PMCID: PMC8773207 DOI: 10.3390/antibiotics11010069] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 12/31/2021] [Accepted: 01/05/2022] [Indexed: 12/24/2022] Open
Abstract
Surgical site infections (SSIs) are common postoperative occurrences due to contamination of the surgical wound or implanted medical devices with community or hospital-acquired microorganisms, as well as other endogenous opportunistic microbes. Despite numerous rules and guidelines applied to prevent these infections, SSI rates are considerably high, constituting a threat to the healthcare system in terms of morbidity, prolonged hospitalization, and death. Approximately 80% of human SSIs, including chronic wound infections, are related to biofilm-forming bacteria. Biofilm-associated SSIs are extremely difficult to treat with conventional antibiotics due to several tolerance mechanisms provided by the multidrug-resistant bacteria, usually arranged as polymicrobial communities. In this review, novel strategies to control, i.e., prevent and eradicate, biofilms in SSIs are presented and discussed, focusing mainly on two attractive approaches: the use of nanotechnology-based composites and natural plant-based products. An overview of new therapeutic agents and strategic approaches to control epidemic multidrug-resistant pathogenic microorganisms, particularly when biofilms are present, is provided alongside other combinatorial approaches as attempts to obtain synergistic effects with conventional antibiotics and restore their efficacy to treat biofilm-mediated SSIs. Some detection and real-time monitoring systems to improve biofilm control strategies and diagnosis of human infections are also discussed.
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Ngenge Tamfu A, Mfifen Munvera A, Veronica Dediu Botezatu A, Talla E, Ceylan O, Tagatsing Fotsing M, Tanyi Mbafor J, Shaheen F, Mihaela Dinica R. Synthesis of benzoyl esters of β-amyrin and lupeol and evaluation of their antibiofilm and antidiabetic activities. RESULTS IN CHEMISTRY 2022. [DOI: 10.1016/j.rechem.2022.100322] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
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40
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Afonso AC, Sousa M, Simões LC, Simões M. Phytochemicals Against Drug-Resistant Bacterial Biofilms and Use of Green Extraction Solvents to Increase Their Bioactivity. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2022. [DOI: 10.1007/5584_2022_723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Strauss G, Koria P. Hybrid fusion protein as a dual protease inhibitor for the healing of chronic wounds. Biotechnol Prog 2021; 37:e3209. [PMID: 34486249 DOI: 10.1002/btpr.3209] [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: 06/21/2021] [Revised: 08/31/2021] [Accepted: 09/01/2021] [Indexed: 11/07/2022]
Abstract
Diseases bring about the need for interventions that pinpoint each specific aspect of the illness. Commonly, remission of a complex disease is accomplished by mixing treatments, medications, and therapeutics together in a fashion where they may negatively interact with each other or never arrive at the diseased site as a systemic heterogeneous mixture. Chronic wounds display intricacy as they are very localized and have their own environment where tissue deconstruction due to high levels of numerous proteases outweighs normal tissue reconstruction. This idea leads to the necessity of a protein that contains low diffusivity rates for localized treatment, strength against high concentrations of proteolytic species that lead to degradation of short chain peptides, while encompassing broad inhibitory effects against multiple proteases. Elastin-like peptides are an attractive, thermoresponsive, protein-based drug delivery partner as they contain low diffusivity and serve as a stable architecture for short chain peptide fusion. In this project, a novel elastin-like peptide-based protein has been created to target the inhibition of both human neutrophil elastase and matrix metalloprotease-2. As a biologic, this is unique as it is a protein with specific biological activities against multiple proteases, ultimately displaying the potential to mix and match differing biologically active peptides within one amino acid sequence.
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Affiliation(s)
- Graham Strauss
- Department of Chemical, Biological & Materials Engineering, University of South Florida, Tampa, Florida, USA
| | - Piyush Koria
- Department of Chemical, Biological & Materials Engineering, University of South Florida, Tampa, Florida, USA
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