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Maslova E, EisaianKhongi L, Rigole P, Coenye T, McCarthy RR. Carbon source competition within the wound microenvironment can significantly influence infection progression. NPJ Biofilms Microbiomes 2024; 10:52. [PMID: 38918415 PMCID: PMC11199515 DOI: 10.1038/s41522-024-00518-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Accepted: 05/08/2024] [Indexed: 06/27/2024] Open
Abstract
It is becoming increasingly apparent that commensal skin bacteria have an important role in wound healing and infection progression. However, the precise mechanisms underpinning many of these probiotic interactions remain to be fully uncovered. In this work, we demonstrate that the common skin commensal Cutibacterium acnes can limit the pathogenicity of the prevalent wound pathogen Pseudomonas aeruginosa in vivo. We show that this impact on pathogenicity is independent of any effect on growth, but occurs through a significant downregulation of the Type Three Secretion System (T3SS), the primary toxin secretion system utilised by P. aeruginosa in eukaryotic infection. We also show a downregulation in glucose acquisition systems, a known regulator of the T3SS, suggesting that glucose availability in a wound can influence infection progression. C. acnes is well known as a glucose fermenting organism, and we demonstrate that topically supplementing a wound with glucose reverses the probiotic effects of C. acnes. This suggests that introducing carbon source competition within the wound microenvironment may be an effective way to prevent or limit wound infection.
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Affiliation(s)
- Evgenia Maslova
- Division of Biosciences, Department of Life Sciences, College of Health and Life Sciences, Brunel University London, Uxbridge, UK
| | - Lara EisaianKhongi
- Division of Biosciences, Department of Life Sciences, College of Health and Life Sciences, Brunel University London, Uxbridge, UK
| | - Petra Rigole
- Laboratory of Pharmaceutical Microbiology, Ghent University, 9000, Ghent, Belgium
| | - Tom Coenye
- Laboratory of Pharmaceutical Microbiology, Ghent University, 9000, Ghent, Belgium
| | - Ronan R McCarthy
- Division of Biosciences, Department of Life Sciences, College of Health and Life Sciences, Brunel University London, Uxbridge, UK.
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2
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Wang P, Wang S, Wang D, Li Y, Yip RCS, Chen H. Postbiotics-peptidoglycan, lipoteichoic acid, exopolysaccharides, surface layer protein and pili proteins-Structure, activity in wounds and their delivery systems. Int J Biol Macromol 2024; 274:133195. [PMID: 38885869 DOI: 10.1016/j.ijbiomac.2024.133195] [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: 03/20/2024] [Revised: 06/06/2024] [Accepted: 06/13/2024] [Indexed: 06/20/2024]
Abstract
Chronic wound healing is a pressing global public health concern. Abuse and drug resistance of antibiotics are the key problems in the treatment of chronic wounds at present. Postbiotics are a novel promising strategy. Previous studies have reported that postbiotics have a wide range of biological activities including antimicrobial, immunomodulatory, antioxidant and anti-inflammatory abilities. However, several aspects related to these postbiotic activities remain unexplored or poorly known. Therefore, this work aims to outline general aspects and emerging trends in the use of postbiotics for wound healing, such as the production, characterization, biological activities and delivery strategies of postbiotics. In this review, a comprehensive overview of the physiological activities and structures of postbiotic biomolecules that contribute to wound healing is provided, such as peptidoglycan, lipoteichoic acid, bacteriocins, exopolysaccharides, surface layer proteins, pili proteins, and secretory proteins (p40 and p75 proteins). Considering the presence of readily degradable components in postbiotics, potential natural polymer delivery materials and delivery systems are emphasized, followed by the potential applications and commercialization prospects of postbiotics. These findings suggest that the treatment of chronic wounds with postbiotic ingredients will help provide new insights into wound healing and better guidance for the development of postbiotic products.
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Affiliation(s)
- Pu Wang
- Marine College, Shandong University, No. 180 Wen Hua West Road, Gao Strict, Weihai 264209, China.
| | - Shuxin Wang
- Marine College, Shandong University, No. 180 Wen Hua West Road, Gao Strict, Weihai 264209, China.
| | - Donghui Wang
- Marine College, Shandong University, No. 180 Wen Hua West Road, Gao Strict, Weihai 264209, China.
| | - Yuanyuan Li
- Department of Food Science, College of Agriculture and Life Sciences, Cornell University, Stocking Hall, 411 Tower Road, Ithaca, NY 14853, USA.
| | - Ryan Chak Sang Yip
- Department of Cell and Systems Biology, University of Toronto, 25 Harbord St, Toronto, ON M5S 3G5, Canada.
| | - Hao Chen
- Marine College, Shandong University, No. 180 Wen Hua West Road, Gao Strict, Weihai 264209, China.
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Cheng X, Cheng B, Jin R, Zheng H, Zhou J, Shan S. The role of circulating metabolites and gut microbiome in hypertrophic scar: a two-sample Mendelian randomization study. Arch Dermatol Res 2024; 316:315. [PMID: 38822918 DOI: 10.1007/s00403-024-03116-8] [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: 04/02/2024] [Revised: 04/02/2024] [Accepted: 04/26/2024] [Indexed: 06/03/2024]
Abstract
Hypertrophic scarring is a fibro-proliferative disorder caused by abnormal cutaneous wound healing. Circulating metabolites and the gut microbiome may be involved in the formation of these scars, but high-quality evidence of causality is lacking. To assess whether circulating metabolites and the gut microbiome contain genetically predicted modifiable risk factors for hypertrophic scar formation. Two-sample Mendelian randomization (MR) was performed using MR-Egger, inverse-variance weighting (IVW), Mendelian Randomization Pleiotropy RESidual Sum and Outlier, maximum likelihood, and weighted median methods. Based on the genome-wide significance level, genetically predicted uridine (P = 0.015, odds ratio [OR] = 1903.514, 95% confidence interval [CI] 4.280-846,616.433) and isovalerylcarnitine (P = 0.039, OR = 7.765, 95% CI 1.106-54.512) were positively correlated with hypertrophic scar risk, while N-acetylalanine (P = 0.013, OR = 7.98E-10, 95% CI 5.19E-17-0.012) and glycochenodeoxycholate (P = 0.021, OR = 0.021 95% CI 0.003-0.628) were negatively correlated. Gastranaerophilales and two unknown gut microbe species (P = 0.031, OR = 0.378, 95% CI 0.156-0.914) were associated with an decreased risk of hypertrophic scarring. Circulating metabolites and gut microbiome components may have either positive or negative causal effects on hypertrophic scar formation. The study provides new insights into strategies for diagnosing and limiting hypertrophic scarring.
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Affiliation(s)
- Xinwei Cheng
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhizaoju Road, Shanghai, 200011, China
| | - Bin Cheng
- Department of Burns and Plastic Surgery, Union Shenzhen Hospital, Huazhong University of Science and Technology, Shenzhen, Guangdong, China
| | - Rui Jin
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhizaoju Road, Shanghai, 200011, China
| | - Hongkun Zheng
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhizaoju Road, Shanghai, 200011, China
| | - Jia Zhou
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhizaoju Road, Shanghai, 200011, China.
| | - Shengzhou Shan
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhizaoju Road, Shanghai, 200011, China.
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Sechovcová H, Mahayri TM, Mrázek J, Jarošíková R, Husáková J, Wosková V, Fejfarová V. Gut microbiota in relationship to diabetes mellitus and its late complications with a focus on diabetic foot syndrome: A review. Folia Microbiol (Praha) 2024; 69:259-282. [PMID: 38095802 DOI: 10.1007/s12223-023-01119-y] [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: 06/05/2023] [Accepted: 12/05/2023] [Indexed: 04/11/2024]
Abstract
Diabetes mellitus is a chronic disease affecting glucose metabolism. The pathophysiological reactions underpinning the disease can lead to the development of late diabetes complications. The gut microbiota plays important roles in weight regulation and the maintenance of a healthy digestive system. Obesity, diabetes mellitus, diabetic retinopathy, diabetic nephropathy and diabetic neuropathy are all associated with a microbial imbalance in the gut. Modern technical equipment and advanced diagnostic procedures, including xmolecular methods, are commonly used to detect both quantitative and qualitative changes in the gut microbiota. This review summarises collective knowledge on the role of the gut microbiota in both types of diabetes mellitus and their late complications, with a particular focus on diabetic foot syndrome.
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Affiliation(s)
- Hana Sechovcová
- Laboratory of Anaerobic Microbiology, Institute of Animal Physiology and Genetics, CAS, Vídeňská, 1083, 142 20, Prague, Czech Republic
- Faculty of Agrobiology, Food and Natural Resources, Department of Microbiology, Nutrition and Dietetics, Czech University of Life Sciences, Prague, Czech Republic
| | - Tiziana Maria Mahayri
- Laboratory of Anaerobic Microbiology, Institute of Animal Physiology and Genetics, CAS, Vídeňská, 1083, 142 20, Prague, Czech Republic.
- Department of Veterinary Medicine, University of Sassari, 07100, Sassari, Italy.
| | - Jakub Mrázek
- Laboratory of Anaerobic Microbiology, Institute of Animal Physiology and Genetics, CAS, Vídeňská, 1083, 142 20, Prague, Czech Republic
| | - Radka Jarošíková
- Diabetes Centre, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
- Second Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Jitka Husáková
- Diabetes Centre, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Veronika Wosková
- Diabetes Centre, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Vladimíra Fejfarová
- Diabetes Centre, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
- Second Faculty of Medicine, Charles University, Prague, Czech Republic
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Zheng H, Na H, Yao J, Su S, Han F, Li X, Chen X. 16S rRNA seq-identified Corynebacterium promotes pyroptosis to aggravate diabetic foot ulcer. BMC Infect Dis 2024; 24:366. [PMID: 38561650 PMCID: PMC10986075 DOI: 10.1186/s12879-024-09235-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Accepted: 03/18/2024] [Indexed: 04/04/2024] Open
Abstract
BACKGROUND Diabetic foot ulcer (DFU) is one of the main chronic complications caused by diabetes, leading to amputation in severe cases. Bacterial infection affects the wound healing in DFU. METHODS DFU patients who met the criteria were selected, and the clinical data were recorded in detail. The pus exudate from the patient's foot wound and venous blood were collected for biochemical analysis. The distribution of bacterial flora in pus exudates of patients was analyzed by 16S rRNA sequencing, and the correlation between DFU and pathogenic variables, pyroptosis and immunity was analyzed by statistical analysis. Then, the effects of key bacteria on the inflammation, proliferation, apoptosis, and pyroptosis of polymorphonuclear leukocytes were investigated by ELISA, CCK-8, flow cytometry, RT-qPCR and western blot. RESULTS Clinical data analysis showed that Wagner score was positively correlated with the level of inflammatory factors, and there was high CD3+, CD4+, and low CD8+ levels in DFU patients with high Wagner score. Through alpha, beta diversity analysis and species composition analysis, Corynebacterium accounted for a large proportion in DFU. Logistics regression model and Person correlation analysis demonstrated that mixed bacterial infections could aggravate foot ulcer, and the number of bacteria was closely related to inflammatory factors PCT, PRT, immune cells CD8+, and pyroptosis-related proteins GSDMD and NLRP3. Through in vitro experiments, Corynebacterium inhibited cell proliferation, promoted inflammation (TNF-α, PCT, CRP), apoptosis and pyroptosis (IL-1β, LDH, IL-18, GSDMD, NLRP3, and caspase-3). CONCLUSION Mixed bacterial infections exacerbate DFU progression with a high predominance of Corynebacterium, and Corynebacterium promotes inflammation, apoptosis and pyroptosis to inhibit DFU healing.
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Affiliation(s)
- Hailong Zheng
- Department of Endocrinology, The First Affiliated Hospital of Hainan Medical University, Hainan Province, No. 31, Longhua Road, Haikou City, 570102, China
| | - Han Na
- Department of Endocrinology, The First Affiliated Hospital of Hainan Medical University, Hainan Province, No. 31, Longhua Road, Haikou City, 570102, China
| | - Jiangling Yao
- Department of Wound Repair, The First Affiliated Hospital of Hainan Medical University, Hainan Province, No. 31, Longhua Road, Haikou City, 570102, China
| | - Sheng Su
- Department of Endocrinology, The First Affiliated Hospital of Hainan Medical University, Hainan Province, No. 31, Longhua Road, Haikou City, 570102, China
| | - Feng Han
- Department of Clinical Laboratory, The First Affiliated Hospital of Hainan Medical University, Hainan Province, No. 31, Longhua Road, Haikou City, 570102, China
| | - Xiaoyan Li
- Department of Endocrinology, The First Affiliated Hospital of Hainan Medical University, Hainan Province, No. 31, Longhua Road, Haikou City, 570102, China
| | - Xiaopan Chen
- Department of Endocrinology, The First Affiliated Hospital of Hainan Medical University, Hainan Province, No. 31, Longhua Road, Haikou City, 570102, China.
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Wang X, Li X, Liu J, Tao Y, Wang T, Li L. Lactobacillus Plantarum Promotes Wound Healing by Inhibiting the NLRP3 Inflammasome and Pyroptosis Activation in Diabetic Foot Wounds. J Inflamm Res 2024; 17:1707-1720. [PMID: 38510374 PMCID: PMC10953830 DOI: 10.2147/jir.s449565] [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: 11/29/2023] [Accepted: 02/28/2024] [Indexed: 03/22/2024] Open
Abstract
Objective Diabetic foot ulcer (DFU) impairs the quality of life of diabetic patients and overburdens healthcare systems and society. It is crucial to comprehend the pathophysiology of DFU and develop effective treatment strategies. The aim of this study was to to evaluate the therapeutic potential of Lactobacillus Plantarum (LP) on wound healing in DFU and to explore the underlying mechanisms. Methods To investigate the effects of LP on wound healing, human umbilical vein endothelial cells (HUVECs) were treated with advanced glycation end products (AGEs) and used to assess cell viability, migration, and pyroptosis using CCK-8, cell scratch, and flow cytometry. The levels of IL-1β and IL-18 were measured by ELISA. The expression of NLRP3, caspase-1 p20, and GSDMD-N was detected by Western blot. Additionally, NLRP3 inhibitor MCC950 was used to treat a diabetic rat model established by streptozotocin (STZ). Pearson correlation analysis was performed to analyze the relationship between LP and NLRP3, IL-1β, IL-18 in ulcer tissue. Results Our data mechanistically demonstrate that AGEs activate the NLRP3/Caspase-1/GSDMD pathway, leading to an increase in the levels of IL-1β and IL-18 and ultimately promoting cell pyroptosis. Furthermore, we identified that LP inhibits the effects of AGEs by downregulating NLRP3 inflammasome activity. LP facilitated wound healing in diabetic rats and resulted in decreased protein levels of NLRP3 and its downstream target caspase-1 p20. Finally, we observed a negative correlation between LP and NLRP3, IL-1β, IL-18 in diabetic foot skin tissue. Conclusion Our findings uncovered a novel role of LP in diabetic foot wound healing via regulation of the NLRP3 inflammasome, suggesting this link as a therapeutic target. In future research, it would be valuable to explore the signaling cascades involved in LP-mediated inhibition of NLRP3 inflammasome activation.
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Affiliation(s)
- Xiaojun Wang
- Vascular Surgery, Fudan University Zhongshan Hospital Qingpu Branch, Shanghai, People’s Republic of China
| | - Xu Li
- Vascular Surgery, Fudan University Zhongshan Hospital Qingpu Branch, Shanghai, People’s Republic of China
| | - Jianjun Liu
- Vascular Surgery, Fudan University Zhongshan Hospital Qingpu Branch, Shanghai, People’s Republic of China
| | - Yue Tao
- Vascular Surgery, Fudan University Zhongshan Hospital Qingpu Branch, Shanghai, People’s Republic of China
| | - Tao Wang
- Vascular Surgery, Fudan University Zhongshan Hospital Qingpu Branch, Shanghai, People’s Republic of China
| | - Limeng Li
- Vascular Surgery, Fudan University Zhongshan Hospital Qingpu Branch, Shanghai, People’s Republic of China
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Geng R, Kang SG, Huang K, Tong T. Dietary Isoeugenol Supplementation Attenuates Chronic UVB-Induced Skin Photoaging and Modulates Gut Microbiota in Mice. Nutrients 2024; 16:481. [PMID: 38398805 PMCID: PMC10892115 DOI: 10.3390/nu16040481] [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: 12/21/2023] [Revised: 01/29/2024] [Accepted: 02/06/2024] [Indexed: 02/25/2024] Open
Abstract
Photoaging, the primary cause of skin aging damage, results from chronic ultraviolet (UV) exposure, leading to dryness and wrinkle formation. Nutritional intervention has emerged as a practical approach for preventing and addressing the effect of skin photoaging. The primary aromatic compound isolated from clove oil, isoeugenol (IE), has antibacterial, anti-inflammatory, and antioxidant qualities that work to effectively restrict skin cancer cell proliferation. This investigation delved into the advantages of IE in alleviating skin photoaging using UVB-irradiated skin fibroblasts and female SKH-1 hairless mouse models. IE alleviated UVB-induced photodamage in Hs68 dermal fibroblasts by inhibiting matrix metalloproteinase secretion and promoting extracellular matrix synthesis. In photoaged mice, dietary IE reduced wrinkles, relieved skin dryness, inhibited epidermal thickening, and prevented collagen loss. Additionally, the intestinal dysbiosis caused by prolonged UVB exposure was reduced with an IE intervention. The results of Spearman's analysis showed a strong correlation between skin photoaging and gut microbiota. Given the almost unavoidable UVB exposure in contemporary living, this research demonstrated the efficacy of dietary IE in reversing skin photoaging, presenting a promising approach to tackle concerns related to extrinsic skin aging.
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Affiliation(s)
- Ruixuan Geng
- Key Laboratory of Precision Nutrition and Food Quality, Key Laboratory of Functional Dairy, Ministry of Education, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; (R.G.); (K.H.)
- Key Laboratory of Safety Assessment of Genetically Modified Organism (Food Safety), Ministry of Agriculture, Beijing 100083, China
- Beijing Laboratory for Food Quality and Safety, Beijing 100083, China
| | - Seong-Gook Kang
- Department of Food Engineering and Solar Salt Research Center, Mokpo National University, Muangun 58554, Republic of Korea;
| | - Kunlun Huang
- Key Laboratory of Precision Nutrition and Food Quality, Key Laboratory of Functional Dairy, Ministry of Education, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; (R.G.); (K.H.)
- Key Laboratory of Safety Assessment of Genetically Modified Organism (Food Safety), Ministry of Agriculture, Beijing 100083, China
- Beijing Laboratory for Food Quality and Safety, Beijing 100083, China
| | - Tao Tong
- Key Laboratory of Precision Nutrition and Food Quality, Key Laboratory of Functional Dairy, Ministry of Education, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; (R.G.); (K.H.)
- Key Laboratory of Safety Assessment of Genetically Modified Organism (Food Safety), Ministry of Agriculture, Beijing 100083, China
- Beijing Laboratory for Food Quality and Safety, Beijing 100083, China
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Anuradha U, Mehra NK, Khatri DK. Understanding molecular mechanisms and miRNA-based targets in diabetes foot ulcers. Mol Biol Rep 2024; 51:82. [PMID: 38183502 DOI: 10.1007/s11033-023-09074-0] [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: 07/10/2023] [Accepted: 11/21/2023] [Indexed: 01/08/2024]
Abstract
In today's culture, obesity and overweight are serious issues that have an impact on how quickly diabetes develops and how it causes complications. For the development of more effective therapies, it is crucial to understand the molecular mechanisms underlying the chronic problems of diabetes. The most prominent effects of diabetes are microvascular abnormalities such as retinopathy, nephropathy, and neuropathy, especially diabetes foot ulcers, as well as macrovascular abnormalities such as heart disease and atherosclerosis. MicroRNAs (miRNAs), which are highly conserved endogenous short non-coding RNA molecules, have been implicated in several physiological functions recently, including the earliest stages of the disease. By binding to particular messenger RNAs (mRNAs), which cause mRNA degradation, translation inhibition, or even gene activation, it primarily regulates posttranscriptional gene expression. These molecules exhibit considerable potential as diagnostic biomarkers for disease and are interesting treatment targets. This review will provide an overview of the latest findings on the key functions that miRNAs role in diabetes and its complications, with an emphasis on the various stages of diabetic wound healing.
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Affiliation(s)
- Urati Anuradha
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER)-Hyderabad, Hyderabad, Telangana, 500037, India
| | - Neelesh Kumar Mehra
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER)-Hyderabad, Hyderabad, Telangana , 500037, India.
| | - Dharmendra Kumar Khatri
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER)-Hyderabad, Hyderabad, Telangana, 500037, India.
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Morsli M, Salipante F, Gelis A, Magnan C, Guigon G, Lavigne J, Sotto A, Dunyach‐Remy C. Evolution of the urinary microbiota in spinal cord injury patients with decubitus ulcer: A snapshot study. Int Wound J 2024; 21:e14626. [PMID: 38272816 PMCID: PMC10805533 DOI: 10.1111/iwj.14626] [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: 10/05/2023] [Accepted: 12/14/2023] [Indexed: 01/27/2024] Open
Abstract
Current microbiome investigations of patients with pressure ulcers (PU) are mainly based on wound swabs and/or biopsy sequencing, leaving the colonization scenario unclear. Urinary microbiota has been never studied. As a part of the prospective ESCAFLOR study, we studied urinary microbiota of spinal cord injury (SCI) patients with PU without any urinary tract infection at the inclusion, collected at two times (at admission [D0] and after 28 days [D28]) during the patient's care, investigated by 16S rDNA metagenomics next generation sequencing. Subgroup analyses were carried out between patients with wounds showing improved evolution versus stagnated/worsened wounds at D28. Analysis was done using EPISEQ® 16S and R software. Among the 12 studied patients, the urinary microbiota of patients with improved wound evolution at D28 (n = 6) presented a significant decrease of microbial diversity. This modification was associated with the presence of Proteobacteria phylum and an increase of Escherichia-Shigella (p = 0.005), as well as the presence of probiotic anaerobic bacteria Lactobacillus and Bifidobacterium. In contrast, Proteus abundance was significantly increased in urine of patients with stagnated/worsened wound evolution (n = 6) (p = 0.003). This study proposes urinary microbiota as a complementary factor indirectly associated with the wound evolution and patient cure. It opens new perspectives for further investigations based on multiple body microbiome comparison to describe the complete scenario of the transmission dynamics of wound-colonizing microorganisms.
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Affiliation(s)
- Madjid Morsli
- Department of Microbiology and Hospital HygieneCHU Nîmes, Univ MontpellierNîmesFrance
| | - Florian Salipante
- Department of Biostatistics, Epidemiology, Public Health, and Innovation in Methodology (BESPIM)CHU Nîmes, Univ MontpellierNîmesFrance
| | - Anthony Gelis
- Centre Mutualiste Neurologique ProparaMontpellierFrance
| | - Chloé Magnan
- VBIC, INSERM U1047, Department of Microbiology and Hospital HygieneCHU Nîmes, Univ MontpellierNîmesFrance
| | | | - Jean‐Philippe Lavigne
- VBIC, INSERM U1047, Department of Microbiology and Hospital HygieneCHU Nîmes, Univ MontpellierNîmesFrance
| | - Albert Sotto
- VBIC, INSERM U1047, Department of Infectious and Tropical DiseasesCHU Nîmes, Univ MontpellierNîmesFrance
| | - Catherine Dunyach‐Remy
- VBIC, INSERM U1047, Department of Microbiology and Hospital HygieneCHU Nîmes, Univ MontpellierNîmesFrance
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Azeez TA, Adeagbo AK. The Association Between Malignant Otitis Externa and Diabetes Mellitus in Africa: A Systematic Review. Indian J Otolaryngol Head Neck Surg 2023; 75:3277-3287. [PMID: 37974885 PMCID: PMC10645783 DOI: 10.1007/s12070-023-03939-3] [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: 03/27/2023] [Accepted: 06/06/2023] [Indexed: 11/19/2023] Open
Abstract
Diabetes mellitus is one of the risk factors for malignant otitis externa. There are very few studies on the disease in Africa and there is a need to pool the prior studies to highlight the characteristics of the disease. The study type is a systematic review and the PRISMA guidelines were followed. Using the appropriate terms, relevant medical databases were systematically searched. Thirty-two studies met the eligibility criteria with a total sample size of 848, who were mainly elderly. Diabetes mellitus was present in 94% of the participants. Average duration of diabetes diagnosis in the participants was 12.4 years. The pooled HbA1c was 9.8%. The most common symptoms were otalgia (96.1%), otorrhoea (75.8%) and hearing loss (56.1%). Pseudomonas was the most common isolate (72%). Fluoroquinolones and the 3rd-generation cephalosporins were the preferred antibiotics. The pooled cure rate from antimicrobial usage was 76.2%. In addition to medications, 24.6% of the affected individuals required debridement. About 1.6% of the participants died from malignant otitis externa. Malignant otitis externa is associated with poorly controlled diabetes. Pseudomonas is the most common cause and a significant proportion gets cured with prolonged antibiotherapy.
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Affiliation(s)
- Taoreed Adegoke Azeez
- Department of Medicine, Reddington Multi-Specialist Hospital, 12, Idowu Martins Street, Victoria Island, Lagos, Nigeria
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Zheng S, Wang H, Han J, Dai X, Lv Y, Sun T, Liu H. Microbiota-derived imidazole propionate inhibits type 2 diabetic skin wound healing by targeting SPNS2-mediated S1P transport. iScience 2023; 26:108092. [PMID: 37876799 PMCID: PMC10590984 DOI: 10.1016/j.isci.2023.108092] [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: 02/07/2023] [Revised: 07/20/2023] [Accepted: 09/26/2023] [Indexed: 10/26/2023] Open
Abstract
Imidazole propionate (ImP) is a recently discovered metabolite of T2DM-related gut microbiota. The effect of ImP on T2DM wound healing has not been studied yet. In this research, the changes of ImP-producing bacteria on the skin are firstly evaluated. 16sRNA sequencing results showed that the abundance of ImP-producing bacteria-Streptococcus in the intestine and skin of T2DM mice is significantly increased. Animal experiments show that ImP can inhibit the process of wound healing and inhibit the formation of blood vessels in the process of wound healing. Molecular mechanism research results show that ImP can inhibit S1P secretion mediated by SPNS2, and inhibit the activation of Rho signaling pathway, thereby affecting the angiogenesis process of HUVEC cells. This work also provides a potential drug HMPA that promotes T2DM wound healing.
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Affiliation(s)
- Shaoting Zheng
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin, China
- Tianjin International Joint Academy of Biomedicine, Tianjin, China
| | - Hongqi Wang
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin, China
- Tianjin International Joint Academy of Biomedicine, Tianjin, China
| | - Jingxia Han
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin, China
| | - Xintong Dai
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin, China
| | - Ying Lv
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin, China
| | - Tao Sun
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin, China
- Tianjin International Joint Academy of Biomedicine, Tianjin, China
| | - Huijuan Liu
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin, China
- Tianjin International Joint Academy of Biomedicine, Tianjin, China
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12
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Walczak-Skierska J, Monedeiro F, Maślak E, Złoch M. Lipidomics Characterization of the Microbiome in People with Diabetic Foot Infection Using MALDI-TOF MS. Anal Chem 2023; 95:16251-16262. [PMID: 37877781 PMCID: PMC10633811 DOI: 10.1021/acs.analchem.3c03071] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 09/11/2023] [Accepted: 10/09/2023] [Indexed: 10/26/2023]
Abstract
Lipidomic profiling has emerged as a powerful tool for the comprehensive characterization of bacterial species, particularly in the context of clinical diagnostics. Utilizing matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS), this study aims to elucidate the lipidomic landscapes of bacterial strains isolated from diabetic foot infections (DFI). Our analysis successfully identified a diverse array of lipids in the cellular membranes of both Gram-positive and Gram-negative bacteria, revealing a total of 108 unique fatty acid combinations. Specifically, we identified 26 LPG, 33 LPE, 43 PE, 114 PG, 89 TAG, and 120 CLP in Gram-positive bacteria and 10 LPG, 14 LPE, 124 PE, 37 PG, 13 TAG, and 22 CLP in Gram-negative strains. Key fatty acids, such as palmitic acid, palmitoleic acid, stearic acid, and oleic acid, were prominently featured. Univariate analysis further highlighted distinct lipidomic signatures among the bacterial strains, revealing elevated levels of phosphatidylethanolamine (PE) and phosphatidylglycerol (PG) in Gram-negative bacteria associated with DFI. In contrast, Gram-positive strains demonstrated increased or uniquely fluctuating levels of triglyceride (TAG) and cardiolipin (CLP). These findings not only underscore the utility of MALDI-TOF MS in bacterial lipidomics but also provide valuable insights into the lipidomic adaptations of bacteria in diabetic foot infections, thereby laying the groundwork for future studies aimed at constructing microbial lipid libraries for enhanced bacterial identification.
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Affiliation(s)
- Justyna Walczak-Skierska
- Centre
for Modern Interdisciplinary Technologies, Nicolaus Copernicus University in Toruń, Wileńska 4 Str., 87-100 Toruń, Poland
- Chair
of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, Nicolaus a Copernicus University in Toruń, Gagarina 7 Str., 87-100 Toruń, Poland
| | - Fernanda Monedeiro
- Centre
for Modern Interdisciplinary Technologies, Nicolaus Copernicus University in Toruń, Wileńska 4 Str., 87-100 Toruń, Poland
| | - Ewelina Maślak
- Centre
for Modern Interdisciplinary Technologies, Nicolaus Copernicus University in Toruń, Wileńska 4 Str., 87-100 Toruń, Poland
| | - Michał Złoch
- Centre
for Modern Interdisciplinary Technologies, Nicolaus Copernicus University in Toruń, Wileńska 4 Str., 87-100 Toruń, Poland
- Chair
of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, Nicolaus a Copernicus University in Toruń, Gagarina 7 Str., 87-100 Toruń, Poland
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13
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Liu W, Peng L, Chen L, Wan J, Lou S, Yang T, Shen Z. Skin microbial dysbiosis is a characteristic of systemic drug-related intertriginous and flexural exanthema-like lesions induced by EGFR inhibitor. Heliyon 2023; 9:e21690. [PMID: 38028014 PMCID: PMC10661433 DOI: 10.1016/j.heliyon.2023.e21690] [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: 05/27/2023] [Revised: 10/25/2023] [Accepted: 10/25/2023] [Indexed: 12/01/2023] Open
Abstract
Objectives To investigate the characteristics of the skin microbiome in severe afatinib-induced skin toxicity. Methods Body site-matched skin surface samples were collected from the lesions on seven flexural sites of one lung cancer (Patient 1) with serious systemic drug-related intertriginous and flexural exanthema (SDRIFE)-like toxicity induced by EGFR-TKI and three healthy age/sex matched controls for whole metagenomics sequencing analysis. Lung cancer Patient 1 and Patient 2 were prescribed minocycline and followed up. Results In SDRIFE-like toxicities induced by afatinib, lesion microbiota richness (ACE and Chao1 index: p < 0.001) and diversity (Shannon's and Simpson's diversity indices: p < 0.01) were reduced. Similarly, the beta diversity analysis (R = 1, p = 0.002 for ANOSIM) showed that the apparent difference in the microbiota composition was statistically significant. The microbial taxa composition in the patient showed an increased abundance of pathogenic bacteria and a decreased abundance of commensal bacteria. LEfSe analysis identified strong bacterial pathogenicity in the patient, while healthy controls exhibited enrichment in several pathways that are beneficial for skin commensal bacteria and skin physiology, including key amino acid metabolism, energy/lipid/glycan biosynthesis/metabolism, and cofactors/vitamins biosynthesis. Ultimately, the patients experienced significant improvement with minocycline. Conclusion Microbial dysbiosis is a characteristic of severe SDRIFE-like toxicity induced by afatinib.
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Affiliation(s)
- Wenqi Liu
- Department of Dermatology, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, 510080, China
| | - Lu Peng
- Department of Dermatology, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, 510080, China
| | - Ling Chen
- Department of Dermatology, Daping Hospital, Army Medical University, Chongqing, 400042, China
| | - Jianji Wan
- Department of Dermatology, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, 510080, China
| | - Shuang Lou
- Department of Dermatology, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, 510080, China
| | - Tingting Yang
- Department of Dermatology, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, 510080, China
| | - Zhu Shen
- Department of Dermatology, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, 510080, China
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14
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Xu J, Chen C, Gan S, Liao Y, Fu R, Hou C, Yang S, Zheng Z, Chen W. The Potential Value of Probiotics after Dental Implant Placement. Microorganisms 2023; 11:1845. [PMID: 37513016 PMCID: PMC10383117 DOI: 10.3390/microorganisms11071845] [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: 06/29/2023] [Revised: 07/15/2023] [Accepted: 07/18/2023] [Indexed: 07/30/2023] Open
Abstract
Dental implantation is currently the optimal solution for tooth loss. However, the health and stability of dental implants have emerged as global public health concerns. Dental implant placement, healing of the surgical site, osseointegration, stability of bone tissues, and prevention of peri-implant diseases are challenges faced in achieving the long-term health and stability of implants. These have been ongoing concerns in the field of oral implantation. Probiotics, as beneficial microorganisms, play a significant role in the body by inhibiting pathogens, promoting bone tissue homeostasis, and facilitating tissue regeneration, modulating immune-inflammatory levels. This review explores the potential of probiotics in addressing post-implantation challenges. We summarize the existing research regarding the importance of probiotics in managing dental implant health and advocate for further research into their potential applications.
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Affiliation(s)
- Jia Xu
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
- Department of Oral Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Chenfeng Chen
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
- Department of General Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Shuaiqi Gan
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
- Department of Oral Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Yihan Liao
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
- Department of Oral Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Ruijie Fu
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
- Department of Oral Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Chuping Hou
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
- Department of Oral Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Shuhan Yang
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
- Department of Oral Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Zheng Zheng
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
- Department of Oral Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Wenchuan Chen
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
- Department of Oral Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
- Jinjiang Out-Patient Section, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
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15
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Xu Z, Dong M, Yin S, Dong J, Zhang M, Tian R, Min W, Zeng L, Qiao H, Chen J. Why traditional herbal medicine promotes wound healing: Research from immune response, wound microbiome to controlled delivery. Adv Drug Deliv Rev 2023; 195:114764. [PMID: 36841332 DOI: 10.1016/j.addr.2023.114764] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 12/16/2022] [Accepted: 02/19/2023] [Indexed: 02/25/2023]
Abstract
Impaired wound healing in chronic wounds has been a significant challenge for clinicians and researchers for decades. Traditional herbal medicine (THM) has a long history of promoting wound healing, making them culturally accepted and trusted by a great number of people in the world. However, for a long time, the understanding of herbal medicine has been limited and incomplete, particularly in the allopathic medicine-dominated research system. The therapeutic effects of individual components isolated from THM are found less pronounced compared to synthetic chemical medicine, and the clinical efficacy is always inferior to herbs. In the present article, we review and discuss underlying mechanisms of the skin microbiome involved in the wound healing process; THM in regulating immune responses and commensal microbiome. We additionally propose few pioneer ideas and studies in the development of therapeutic strategies for controlled delivery of herbal medicine. This review aims to promote wound care with a focus on wound microbiome, immune response, and topical drug delivery systems. Finally, future development trends, challenges, and research directions are discussed.
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Affiliation(s)
- Zeyu Xu
- Jiangsu Provincial Engineering Research Center of TCM External Medication Development and Application, Nanjing University of Chinese Medicine, Nanjing 210023, PR China; School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, PR China
| | - Mei Dong
- Jiangsu Provincial Engineering Research Center of TCM External Medication Development and Application, Nanjing University of Chinese Medicine, Nanjing 210023, PR China; School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, PR China
| | - Shaoping Yin
- Jiangsu Provincial Engineering Research Center of TCM External Medication Development and Application, Nanjing University of Chinese Medicine, Nanjing 210023, PR China; School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, PR China
| | - Jie Dong
- Jiangsu Provincial Engineering Research Center of TCM External Medication Development and Application, Nanjing University of Chinese Medicine, Nanjing 210023, PR China; School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, PR China
| | - Ming Zhang
- Jiangsu Provincial Engineering Research Center of TCM External Medication Development and Application, Nanjing University of Chinese Medicine, Nanjing 210023, PR China; School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, PR China
| | - Rong Tian
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, PR China
| | - Wen Min
- Jiangsu Provincial Engineering Research Center of TCM External Medication Development and Application, Nanjing University of Chinese Medicine, Nanjing 210023, PR China; Department of Bone Injury of Traditional Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210004, PR China
| | - Li Zeng
- Jiangsu Provincial Engineering Research Center of TCM External Medication Development and Application, Nanjing University of Chinese Medicine, Nanjing 210023, PR China
| | - Hongzhi Qiao
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, PR China.
| | - Jun Chen
- Jiangsu Provincial Engineering Research Center of TCM External Medication Development and Application, Nanjing University of Chinese Medicine, Nanjing 210023, PR China; School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, PR China.
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Maciel-Fiuza MF, Muller GC, Campos DMS, do Socorro Silva Costa P, Peruzzo J, Bonamigo RR, Veit T, Vianna FSL. Role of gut microbiota in infectious and inflammatory diseases. Front Microbiol 2023; 14:1098386. [PMID: 37051522 PMCID: PMC10083300 DOI: 10.3389/fmicb.2023.1098386] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 03/06/2023] [Indexed: 03/29/2023] Open
Abstract
Thousands of microorganisms compose the human gut microbiota, fighting pathogens in infectious diseases and inhibiting or inducing inflammation in different immunological contexts. The gut microbiome is a dynamic and complex ecosystem that helps in the proliferation, growth, and differentiation of epithelial and immune cells to maintain intestinal homeostasis. Disorders that cause alteration of this microbiota lead to an imbalance in the host’s immune regulation. Growing evidence supports that the gut microbial community is associated with the development and progression of different infectious and inflammatory diseases. Therefore, understanding the interaction between intestinal microbiota and the modulation of the host’s immune system is fundamental to understanding the mechanisms involved in different pathologies, as well as for the search of new treatments. Here we review the main gut bacteria capable of impacting the immune response in different pathologies and we discuss the mechanisms by which this interaction between the immune system and the microbiota can alter disease outcomes.
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Affiliation(s)
- Miriãn Ferrão Maciel-Fiuza
- Postgraduate Program in Genetics and Molecular Biology, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Brazil
- Instituto Nacional de Genética Médica Populacional, Porto Alegre, Brazil
- Genomics Medicine Laboratory, Center of Experimental Research, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
- Laboratory of Immunobiology and Immunogenetics, Department of Genetics, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Brazil
| | - Guilherme Cerutti Muller
- Postgraduate Program in Genetics and Molecular Biology, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Brazil
| | - Daniel Marques Stuart Campos
- Genomics Medicine Laboratory, Center of Experimental Research, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
- Laboratory of Immunobiology and Immunogenetics, Department of Genetics, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Brazil
| | - Perpétua do Socorro Silva Costa
- Postgraduate Program in Genetics and Molecular Biology, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Brazil
- Instituto Nacional de Genética Médica Populacional, Porto Alegre, Brazil
- Department of Nursing, Universidade Federal do Maranhão, Imperatriz, Brazil
| | - Juliano Peruzzo
- Dermatology Service of Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
- Postgraduate Program in Medicine, Medical Sciences, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Brazil
| | - Renan Rangel Bonamigo
- Dermatology Service of Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
- Postgraduate Program in Medicine, Medical Sciences, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Brazil
- Postgraduate Program in Pathology, Universidade Federal De Ciências Da Saúde de Porto Alegre, Porto Alegre, Brazil
| | - Tiago Veit
- Laboratory of Immunobiology and Immunogenetics, Department of Genetics, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Brazil
- Department of Microbiology, Immunology and Parasitology, Institute of Basic Health Sciences, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Fernanda Sales Luiz Vianna
- Postgraduate Program in Genetics and Molecular Biology, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Brazil
- Instituto Nacional de Genética Médica Populacional, Porto Alegre, Brazil
- Genomics Medicine Laboratory, Center of Experimental Research, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
- Laboratory of Immunobiology and Immunogenetics, Department of Genetics, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Brazil
- Postgraduate Program in Medicine, Medical Sciences, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Brazil
- *Correspondence: Fernanda Sales Luiz Vianna,
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Poblete Jara C, Nogueira G, Morari J, do Prado TP, de Medeiros Bezerra R, Velloso LA, Velander W, de Araújo EP. An older diabetes-induced mice model for studying skin wound healing. PLoS One 2023; 18:e0281373. [PMID: 36800369 PMCID: PMC9937492 DOI: 10.1371/journal.pone.0281373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Accepted: 01/20/2023] [Indexed: 02/18/2023] Open
Abstract
Advances in wound treatment depend on the availability of animal models that reflect key aspects of human wound healing physiology. To this date, the accepted mouse models do not reflect defects in the healing process for chronic wounds that are associated with type two diabetic skin ulcers. The long term, systemic physiologic stress that occurs in middle aged or older Type 2 diabetes patients is difficult to simulate in preclinical animal model. We have strived to incorporate the essential elements of this stress in a manageable mouse model: long term metabolic stress from obesity to include the effects of middle age and thereafter onset of diabetes. At six-weeks age, male C57BL/6 mice were separated into groups fed a chow and High-Fat Diet for 0.5, 3, and 6 months. Treatment groups included long term, obesity stressed mice with induction of diabetes by streptozotocin at 5 months, and further physiologic evaluation at 8 months old. We show that this model results in a severe metabolic phenotype with insulin resistance and glucose intolerance associated with obesity and, more importantly, skin changes. The phenotype of this older age mouse model included a transcriptional signature of gene expression in skin that overlapped that observed with elderly patients who develop diabetic foot ulcers. We believe this unique old age phenotype contrasts with current mice models with induced diabetes.
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Affiliation(s)
- Carlos Poblete Jara
- Department of Chemical and Biomolecular Engineering, University of Nebraska-Lincoln, Lincoln, NE, United States of America
| | - Guilherme Nogueira
- Faculty of Medical Sciences, University of Campinas, Campinas, Brazil
- Laboratory of Cell Signaling, Obesity and Comorbidities Research Center, University of Campinas, Campinas, Brazil
- University of Campinas, Campinas, Brazil
| | - Joseane Morari
- Faculty of Medical Sciences, University of Campinas, Campinas, Brazil
- Laboratory of Cell Signaling, Obesity and Comorbidities Research Center, University of Campinas, Campinas, Brazil
- University of Campinas, Campinas, Brazil
| | - Thaís Paulino do Prado
- Laboratory of Cell Signaling, Obesity and Comorbidities Research Center, University of Campinas, Campinas, Brazil
- University of Campinas, Campinas, Brazil
- Faculty of Nursing, University of Campinas, Campinas, Brazil
| | - Renan de Medeiros Bezerra
- Laboratory of Cell Signaling, Obesity and Comorbidities Research Center, University of Campinas, Campinas, Brazil
- University of Campinas, Campinas, Brazil
- Faculty of Nursing, University of Campinas, Campinas, Brazil
| | - Lício A. Velloso
- Faculty of Medical Sciences, University of Campinas, Campinas, Brazil
- Laboratory of Cell Signaling, Obesity and Comorbidities Research Center, University of Campinas, Campinas, Brazil
- University of Campinas, Campinas, Brazil
| | - William Velander
- Department of Chemical and Biomolecular Engineering, University of Nebraska-Lincoln, Lincoln, NE, United States of America
| | - Eliana Pereira de Araújo
- Laboratory of Cell Signaling, Obesity and Comorbidities Research Center, University of Campinas, Campinas, Brazil
- University of Campinas, Campinas, Brazil
- Faculty of Nursing, University of Campinas, Campinas, Brazil
- * E-mail:
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18
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Influence of Skin Commensals on Therapeutic Outcomes of Surgically Debrided Diabetic Foot Infections-A Large Retrospective Comparative Study. Antibiotics (Basel) 2023; 12:antibiotics12020316. [PMID: 36830227 PMCID: PMC9952192 DOI: 10.3390/antibiotics12020316] [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: 12/20/2022] [Revised: 01/26/2023] [Accepted: 01/31/2023] [Indexed: 02/05/2023] Open
Abstract
In diabetic foot infections (DFI), the clinical virulence of skin commensals are generally presumed to be low. In this single-center study, we divided the wound isolates into two groups: skin commensals (coagulase-negative staphylococci, micrococci, corynebacteria, cutibacteria) and pathogenic pathogens, and followed the patients for ≥ 6 months. In this retrospective study among 1018 DFI episodes (392 [39%] with osteomyelitis), we identified skin commensals as the sole culture isolates (without accompanying pathogenic pathogens) in 54 cases (5%). After treatment (antibiotic therapy [median of 20 days], hyperbaric oxygen in 98 cases [10%]), 251 episodes (25%) were clinical failures. Group comparisons between those growing only skin commensals and controls found no difference in clinical failure (17% vs. 24 %, p = 0.23) or microbiological recurrence (11% vs. 17 %, p = 0.23). The skin commensals were mostly treated with non-beta-lactam oral antibiotics. In multivariate logistic regression analysis, the isolation of only skin commensals was not associated with failure (odds ratio 0.4, 95% confidence interval 0.1-3.8). Clinicians might wish to consider these isolates as potential pathogens when selecting a targeted antibiotic regimen, which may also be based on oral non-beta-lactam antibiotic agents effective against the corresponding skin pathogens.
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Park JY, Lee JY, Kim Y, Kang CH. Latilactobacillus sakei Wikim0066 Protects Skin through MMP Regulation on UVB-Irradiated In Vitro and In Vivo Model. Nutrients 2023; 15:nu15030726. [PMID: 36771432 PMCID: PMC9919521 DOI: 10.3390/nu15030726] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 01/17/2023] [Accepted: 01/29/2023] [Indexed: 02/04/2023] Open
Abstract
Ultraviolet (UV) B exposure induces wrinkle formation, collagen fiber breakdown, and transepidermal water loss (TEWL). UVB irradiation induces the expression of mitogen-activated protein kinase (MAPK), activator protein 1 (AP-1), and nuclear factor kappa B (NF-κB), which affect the expression of matrix metalloproteinases (MMP). We confirmed the effects of Latilactobacillus sakei wikim0066 (wikim0066) on UVB-irradiated Hs68 cells and HR-1 hairless mice cells. wikim0066 restored the production of type I procollagen by regulating the expression of MMP-1 and -3, MAPK, AP-1, and NF-κB in UVB-irradiated Hs68 cells and HR-1 mice. Oral administration of wikim0066 alleviates wrinkle formation, epidermal thickness, and TEWL in UVB-irradiated HR-1 hairless mice. These results indicated that wikim0066 has the potential to prevent UVB-induced wrinkle formation.
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Littig JPB, Moellmer R, Estes AM, Agrawal DK, Rai V. Increased Population of CD40+ Fibroblasts Is Associated with Impaired Wound Healing and Chronic Inflammation in Diabetic Foot Ulcers. J Clin Med 2022; 11:6335. [PMID: 36362563 PMCID: PMC9654055 DOI: 10.3390/jcm11216335] [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: 09/13/2022] [Revised: 10/22/2022] [Accepted: 10/22/2022] [Indexed: 08/30/2023] Open
Abstract
Despite the advancement in the treatment, nonhealing diabetic foot ulcers (DFUs) are an important clinical issue accounting for increased morbidity and risk of amputation. Persistent inflammation, decreased granulation tissue formation, decreased neo-angiogenesis, and infections are common underlying causes of the nonhealing pattern. Fibroblasts play a critical role in granulation tissue formation and angiogenesis and mediate wound healing how fibroblasts regulate inflammation in nonhealing DFUs is a question to ponder. This study aims to investigate the expression of a de-differentiated subpopulation of fibroblasts which are CD40+ (secretory fibroblasts) and increased secretion of IL-6 and IL-8 but have never been reported in DFUs. We characterized 11 DFU tissues and nearby clean tissues histologically and for the presence of inflammation and CD40+ fibroblasts using immunohistochemistry and RT-PCR. The results revealed significantly increased density of CD40+ fibroblasts and differential expression of mediators of inflammation in DFU tissues compared to clean tissue. Increased expression of IL-6, IL-1β, and TNF-α in DFU tissues along with CD40+ fibroblast suggest that CD40+ fibroblasts in DFUs contribute to the chronicity of inflammation and targeting fibroblasts phenotypic switch to decrease secretory fibroblasts may have therapeutic significance to promote healing.
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Affiliation(s)
| | - Rebecca Moellmer
- College of Podiatry, Western University of Health Sciences, Pomona, CA 91766, USA
| | - Adrienne M. Estes
- College of Podiatry, Western University of Health Sciences, Pomona, CA 91766, USA
| | - Devendra K. Agrawal
- Department of Translational Research, Western University of Health Sciences, Pomona, CA 91766, USA
| | - Vikrant Rai
- Department of Translational Research, Western University of Health Sciences, Pomona, CA 91766, USA
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Sethuram L, Thomas J, Mukherjee A, Chandrasekaran N. A review on contemporary nanomaterial-based therapeutics for the treatment of diabetic foot ulcers (DFUs) with special reference to the Indian scenario. NANOSCALE ADVANCES 2022; 4:2367-2398. [PMID: 36134136 PMCID: PMC9418054 DOI: 10.1039/d1na00859e] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Accepted: 04/06/2022] [Indexed: 05/08/2023]
Abstract
Diabetes mellitus (DM) is a predominant chronic metabolic syndrome, resulting in various complications and high mortality associated with diabetic foot ulcers (DFUs). Approximately 15-30% of diabetic patients suffer from DFUs, which is expected to increase annually. The major challenges in treating DFUs are associated with wound infections, alterations to inflammatory responses, angiogenesis and lack of extracellular matrix (ECM) components. Furthermore, the lack of targeted therapy and efficient wound dressings for diabetic wounds often results in extended hospitalization and limb amputations. Hence, it is essential to develop and improve DFU-specific therapies. Nanomaterial-based innovative approaches have tremendous potential for preventing and treating wound infections of bacterial origin. They have greater benefits compared to traditional wound dressing approaches. In this approach, the physiochemical features of nanomaterials allow researchers to employ different methods for diabetic wound healing applications. In this review, the status and prevalence of diabetes mellitus (DM) and amputations due to DFUs in India, the pathophysiology of DFUs and their complications are discussed. Additionally, nanomaterial-based approaches such as the use of nanoemulsions, nanoparticles, nanoliposomes and nanofibers for the treatment of DFUs are studied. Besides, emerging therapeutics such as bioengineered skin substitutes and nanomaterial-based innovative approaches such as antibacterial hyperthermia therapy and gene therapy for the treatment of DFUs are highlighted. The present nanomaterial-based techniques provide a strong base for future therapeutic approaches for skin regeneration strategies in the treatment of diabetic wounds.
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Affiliation(s)
- Lakshimipriya Sethuram
- Centre for Nanobiotechnology, Vellore Institute of Technology Vellore Tamilnadu India +91 416 2243092 +91 416 2202624
| | - John Thomas
- Centre for Nanobiotechnology, Vellore Institute of Technology Vellore Tamilnadu India +91 416 2243092 +91 416 2202624
| | - Amitava Mukherjee
- Centre for Nanobiotechnology, Vellore Institute of Technology Vellore Tamilnadu India +91 416 2243092 +91 416 2202624
| | - Natarajan Chandrasekaran
- Centre for Nanobiotechnology, Vellore Institute of Technology Vellore Tamilnadu India +91 416 2243092 +91 416 2202624
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