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Zhou C, Chen L, Zhou W, Wang L, Zhang R, Yang C. Antimicrobial polyacrylic acid/tannic acid hydrogel wound dressing facilitating full-thickness skin healing. J Biomater Sci Polym Ed 2024; 35:501-518. [PMID: 38198288 DOI: 10.1080/09205063.2023.2300493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Accepted: 12/26/2023] [Indexed: 01/12/2024]
Abstract
Polyphenolic compound-modified hydrogel wound dressings with excellent wet tissue adhesion, antimicrobial properties, stretchability, and full-thickness skin healing properties are still extremely rare so far. Polyphenolic compounds such as tannic acid or dopamine can improve the antibacterial and bioadhesive properties of hydrogels, and are also polymerization inhibitors for free radical polymerization. In this study, polyacrylic acid (PAA) aqueous solution was first synthesized, and then antibacterial PAA-TA hydrogel was prepared by mixing it with tannic acid (TA) and the crosslinker 1,6-hexanediol bis(2-methyl-1-propionic acid azide) (HBMAP). This method avoids the hindrance of the phenolic hydroxyl groups in TA on acrylic acid polymerization, and we were able to obtain a series of TA hydrogels (in the range of 0-15 wt.%. We applied these PAA-TA hydrogels to wound dressings and found that they had excellent adhesion to biological tissues, and the tensile strength and elongation at break of PAA-TA hydrogels with 15 wt.%TA content were as high as 1.72 MPa and 1446.3% in tensile strength evaluation. In addition, microbiological analysis showed that wound dressings had significant antimicrobial activity against Staphylococcus aureus and Escherichia coli. In vitro wound healing experiments confirmed that the wound dressing was biocompatible and could significantly promote the healing of full-thickness skin defects in the guinea pig model. Our work describes an injectable, self-healing, antimicrobial hydrogel that may have promising clinical applications as a wound dressing material.
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Affiliation(s)
- Changlin Zhou
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang, China
- Department of Research and Development, Hubei Three Gorges Laboratory, Yichang, China
| | - Lingmin Chen
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang, China
| | - Wenyan Zhou
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang, China
| | - Lei Wang
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang, China
| | - Ruitao Zhang
- Medical College, China Three Gorges University, Yichang, China
| | - Chen Yang
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang, China
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Jirillo E, Palmirotta R, Colella M, Santacroce L. A Bird's-Eye View of the Pathophysiologic Role of the Human Urobiota in Health and Disease: Can We Modulate It? Pathophysiology 2024; 31:52-67. [PMID: 38390942 PMCID: PMC10885084 DOI: 10.3390/pathophysiology31010005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 01/22/2024] [Accepted: 01/23/2024] [Indexed: 02/24/2024] Open
Abstract
For a long time, urine has been considered sterile in physiological conditions, thanks to the particular structure of the urinary tract and the production of uromodulin or Tamm-Horsfall protein (THP) by it. More recently, thanks to the development and use of new technologies, i.e., next-generation sequencing and expanded urine culture, the identification of a microbial community in the urine, the so-called urobiota, became possible. Major phyla detected in the urine are represented by Firmicutes, Bacteroidetes, Proteobacteria, and Actinobacteria. Particularly, the female urobiota is largely represented by Lactobacillus spp., which are very active against urinary pathogenic Escherichia (E.) coli (UPEC) strains via the generation of lactic acid and hydrogen peroxide. Gut dysbiosis accounts for recurrent urinary tract infections (UTIs), so-called gut-bladder axis syndrome with the formation of intracellular bacterial communities in the course of acute cystitis. However, other chronic urinary tract infections are caused by bacterial strains of intestinal derivation. Monomicrobial and polymicrobial infections account for the outcome of acute and chronic UTIs, even including prostatitis and chronic pelvic pain. E. coli isolates have been shown to be more invasive and resistant to antibiotics. Probiotics, fecal microbial transplantation, phage therapy, antimicrobial peptides, and immune-mediated therapies, even including vaccines for the treatment of UTIs, will be described.
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Affiliation(s)
- Emilio Jirillo
- Interdisciplinary Department of Medicine, Section of Microbiology and Virology, School of Medicine, University of Bari "Aldo Moro", 70124 Bari, Italy
| | - Raffaele Palmirotta
- Interdisciplinary Department of Medicine, Section of Microbiology and Virology, School of Medicine, University of Bari "Aldo Moro", 70124 Bari, Italy
| | - Marica Colella
- Interdisciplinary Department of Medicine, Section of Microbiology and Virology, School of Medicine, University of Bari "Aldo Moro", 70124 Bari, Italy
- Doctoral School, eCampus University, 22060 Novedrate, Italy
| | - Luigi Santacroce
- Interdisciplinary Department of Medicine, Section of Microbiology and Virology, School of Medicine, University of Bari "Aldo Moro", 70124 Bari, Italy
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Lv Z, Wang Z, Wu S, Yu X. Enhanced catalytic performance of penicillin G acylase by covalent immobilization onto functionally-modified magnetic Ni0.4Cu0.5Zn0.1Fe2O4 nanoparticles. PLoS One 2024; 19:e0297149. [PMID: 38241311 PMCID: PMC10798532 DOI: 10.1371/journal.pone.0297149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Accepted: 12/28/2023] [Indexed: 01/21/2024] Open
Abstract
With the emergence of penicillin resistance, the development of novel antibiotics has become an urgent necessity. Semi-synthetic penicillin has emerged as a promising alternative to traditional penicillin. The demand for the crucial intermediate, 6-aminopicillanic acid (6-APA), is on the rise. Enzyme catalysis is the primary method employed for its production. However, due to certain limitations, the strategy of enzyme immobilization has also gained prominence. The magnetic Ni0.4Cu0.5Zn0.1Fe2O4 nanoparticles were successfully prepared by a rapid-combustion method. Sodium silicate was used to modify the surface of the Ni0.4Cu0.5Zn0.1Fe2O4 nanoparticles to obtain silica-coated nanoparticles (Ni0.4Cu0.5Zn0.1Fe2O4-SiO2). Subsequently, in order to better crosslink PGA, the nanoparticles were modified again with glutaraldehyde to obtain glutaraldehyde crosslinked Ni0.4Cu0.5Zn0.1Fe2O4-SiO2-GA nanoparticles which could immobilize the PGA. The structure of the PGA protein was analyzed by the PyMol program and the immobilization strategy was determined. The conditions of PGA immobilization were investigated, including immobilization time and PGA concentration. Finally, the enzymological properties of the immobilized and free PGA were compared. The optimum catalytic pH of immobilized and free PGA was 8.0, and the optimum catalytic temperature of immobilized PGA was 50°C, 5°C higher than that of free PGA. Immobilized PGA in a certain pH and temperature range showed better catalytic stability. Vmax and Km of immobilized PGA were 0.3727 μmol·min-1 and 0.0436 mol·L-1, and the corresponding free PGA were 0.7325 μmol·min-1 and 0.0227 mol·L-1. After five cycles, the immobilized enzyme activity was still higher than 25%.
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Affiliation(s)
- Zhixiang Lv
- The People’s Hospital of Danyang, Affiliated Danyang Hospital of Nantong University, Zhenjiang, 212300, P.R. China
| | - Zhou Wang
- Vanadium and Titanium Resource Comprehensive Utilization Key Laboratory of Sichuan Province, College of Vanadium and Titanium, Panzhihua University, Panzhihua, 617000, P.R. China
| | - Shaobo Wu
- Zhenjiang Hospital of Chinese Traditional and Western Medicine, Zhenjiang, 212013, P.R. China
| | - Xiang Yu
- Vanadium and Titanium Resource Comprehensive Utilization Key Laboratory of Sichuan Province, College of Vanadium and Titanium, Panzhihua University, Panzhihua, 617000, P.R. China
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Bai Y, Sun X, Guo Y, Qiu T, Xin H, Yu A, Wang X, Gao M. Particle-size stratification of airborne antibiotic resistant genes, mobile genetic elements, and bacterial pathogens within layer and broiler farms in Beijing, China. Environ Sci Pollut Res Int 2023; 30:112799-112812. [PMID: 37843709 DOI: 10.1007/s11356-023-29975-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Accepted: 09/15/2023] [Indexed: 10/17/2023]
Abstract
The particle-size distribution of antimicrobial resistant (AMR) elements is crucial in evaluating their environmental behavior and health risks, and exposure to the fecal microbiome via particle mass (PM) is an important route of transmission of AMR from livestock to humans. However, few studies have explored the association between air and fecal AMR in farm environments from the perspective of particle-size stratification. We collected feces and PMs of different sizes from layer and broiler farms, quantified antibiotic resistance genes (ARGs), mobile genetic elements (MGEs), and human pathogenic bacteria (HPB) using Droplet digital PCR (ddPCR), and analyzed the bacterial communities based on 16S rRNA sequencing. The particle-size distributions of 16S rRNA and AMR elements were similar and generally increased with larger particle sizes in chicken farms. In broiler farms, we observed a bimodal distribution with two peaks at 5.8-9.0 μm and 3.3-4.7 μm. The dominant airborne bacterial phyla were Firmicutes, Proteobacteria, Actinobacteria, and Bacteroidetes. The dominant phyla in the feces were the same as those in the air, but the order of relative abundance varied. The particle-size distributions of specific bacterial genera differed between the animal-farm types. Overall, the degree of association between feces and different particulates increased with increasing particle size. The microbial communities in the coarse particles were similar to those in fecal samples. Escherichia coli, Staphylococcus spp., Campylobacter spp., and sul 2 (sulfonamide ARGs) tended to attach to small particles. We highlight the particle size-specific relationship between fecal and air microbes involving ARGs, MGEs, and HPB and provide valuable information for comprehensively assessing the transmission of fecal microorganisms through the airpath and its environmental and occupational health risks.
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Affiliation(s)
- Yuqiao Bai
- Beijing Key Laboratory of Agricultural Genetic Resources and Biotechnology, Institute of Biotechnology, Beijing Academy of Agriculture and Forestry Sciences, No. 9 Shuguang Middle Road, Haidian District, Beijing, 100097, China
- College of Forestry, Northeast Forestry University, Harbin, 150040, China
| | - Xingbin Sun
- College of Forestry, Northeast Forestry University, Harbin, 150040, China
| | - Yajie Guo
- Beijing Key Laboratory of Agricultural Genetic Resources and Biotechnology, Institute of Biotechnology, Beijing Academy of Agriculture and Forestry Sciences, No. 9 Shuguang Middle Road, Haidian District, Beijing, 100097, China
| | - Tianlei Qiu
- Beijing Key Laboratory of Agricultural Genetic Resources and Biotechnology, Institute of Biotechnology, Beijing Academy of Agriculture and Forestry Sciences, No. 9 Shuguang Middle Road, Haidian District, Beijing, 100097, China
| | - Huibo Xin
- Beijing Key Laboratory of Agricultural Genetic Resources and Biotechnology, Institute of Biotechnology, Beijing Academy of Agriculture and Forestry Sciences, No. 9 Shuguang Middle Road, Haidian District, Beijing, 100097, China
| | - Aoyuan Yu
- Beijing Key Laboratory of Agricultural Genetic Resources and Biotechnology, Institute of Biotechnology, Beijing Academy of Agriculture and Forestry Sciences, No. 9 Shuguang Middle Road, Haidian District, Beijing, 100097, China
| | - Xuming Wang
- Beijing Key Laboratory of Agricultural Genetic Resources and Biotechnology, Institute of Biotechnology, Beijing Academy of Agriculture and Forestry Sciences, No. 9 Shuguang Middle Road, Haidian District, Beijing, 100097, China
| | - Min Gao
- Beijing Key Laboratory of Agricultural Genetic Resources and Biotechnology, Institute of Biotechnology, Beijing Academy of Agriculture and Forestry Sciences, No. 9 Shuguang Middle Road, Haidian District, Beijing, 100097, China.
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Zhao Y, Li C, Zhang S, Cheng J, Liu Y, Han X, Wang Y, Wang Y. Inhaled nitric oxide: can it serve as a savior for COVID-19 and related respiratory and cardiovascular diseases? Front Microbiol 2023; 14:1277552. [PMID: 37849924 PMCID: PMC10577426 DOI: 10.3389/fmicb.2023.1277552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Accepted: 09/18/2023] [Indexed: 10/19/2023] Open
Abstract
Nitric oxide (NO), as an important gaseous medium, plays a pivotal role in the human body, such as maintaining vascular homeostasis, regulating immune-inflammatory responses, inhibiting platelet aggregation, and inhibiting leukocyte adhesion. In recent years, the rapid prevalence of coronavirus disease 2019 (COVID-19) has greatly affected the daily lives and physical and mental health of people all over the world, and the therapeutic efficacy and resuscitation strategies for critically ill patients need to be further improved and perfected. Inhaled nitric oxide (iNO) is a selective pulmonary vasodilator, and some studies have demonstrated its potential therapeutic use for COVID-19, severe respiratory distress syndrome, pulmonary infections, and pulmonary hypertension. In this article, we describe the biochemistry and basic characteristics of NO and discuss whether iNO can act as a "savior" for COVID-19 and related respiratory and cardiovascular disorders to exert a potent clinical protective effect.
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Affiliation(s)
- Yifan Zhao
- Department of Cardiovascular Center, The First Hospital of Jilin University, Changchun, China
| | - Cheng Li
- Department of Cardiovascular Center, The First Hospital of Jilin University, Changchun, China
| | - Shuai Zhang
- Department of Cardiovascular Center, The First Hospital of Jilin University, Changchun, China
| | - Jiayu Cheng
- Department of Cardiovascular Center, The First Hospital of Jilin University, Changchun, China
| | - Yucheng Liu
- Department of Family and Community Medicine, Feinberg School of Medicine, McGaw Medical Center of Northwestern University, Chicago, IL, United States
| | - Xiaorong Han
- Department of Special Care Center, Fuwai Hospital, National Clinical Research Center for Cardiovascular Diseases, National Center for Cardiovascular Diseases, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Yinghui Wang
- Department of Cardiovascular Center, The First Hospital of Jilin University, Changchun, China
| | - Yonggang Wang
- Department of Cardiovascular Center, The First Hospital of Jilin University, Changchun, China
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Colella M, Charitos IA, Ballini A, Cafiero C, Topi S, Palmirotta R, Santacroce L. Microbiota revolution: How gut microbes regulate our lives. World J Gastroenterol 2023; 29:4368-4383. [PMID: 37576701 PMCID: PMC10415973 DOI: 10.3748/wjg.v29.i28.4368] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 05/16/2023] [Accepted: 07/10/2023] [Indexed: 07/26/2023] Open
Abstract
The human intestine is a natural environment ecosystem of a complex of diversified and dynamic microorganisms, determined through a process of competition and natural selection during life. Those intestinal microorganisms called microbiota and are involved in a variety of mechanisms of the organism, they interact with the host and therefore are in contact with the organs of the various systems. However, they play a crucial role in maintaining host homeostasis, also influencing its behaviour. Thus, microorganisms perform a series of biological functions important for human well-being. The host provides the microorganisms with the environment and nutrients, simultaneously drawing many benefits such as their contribution to metabolic, trophic, immunological, and other functions. For these reasons it has been reported that its quantitative and qualitative composition can play a protective or harmful role on the host health. Therefore, a dysbiosis can lead to an association of unfavourable factors which lead to a dysregulation of the physiological processes of homeostasis. Thus, it has pre-viously noted that the gut microbiota can participate in the pathogenesis of autoimmune diseases, chronic intestinal inflammation, diabetes mellitus, obesity and atherosclerosis, neurological disorders (e.g., neurological diseases, autism, etc.) colorectal cancer, and more.
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Affiliation(s)
- Marica Colella
- Interdisciplinary Department of Medicine, Section of Microbiology and Virology, University of Bari “Aldo Moro”, Bari 70124, Italy
| | - Ioannis Alexandros Charitos
- Maugeri Clinical Scientific Research Institutes (IRCCS) of Pavia - Division of Pneumology and Respiratory Rehabilitation, Scientific Institute of Bari, Bari 70124, Italy
| | - Andrea Ballini
- Department of Clinical and Experimental Medicine, University of Foggia, Foggia 71122, Italy
- Department of Precision Medicine, University of Campania “Luigi Vanvitelli”, Naples 80138, Italy
| | - Concetta Cafiero
- Area of Molecular Pathology, Anatomic Pathology Unit, Fabrizio Spaziani Hospital, Frosinone 03100, Italy
| | - Skender Topi
- Department of Clinical Disciplines, School of Technical Medical Sciences, University of Elbasan “A. Xhuvani”, Elbasan 3001, Albania
| | - Raffaele Palmirotta
- Interdisciplinary Department of Medicine, Section of Microbiology and Virology, University of Bari “Aldo Moro”, Bari 70124, Italy
| | - Luigi Santacroce
- Interdisciplinary Department of Medicine, Section of Microbiology and Virology, University of Bari “Aldo Moro”, Bari 70124, Italy
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Corsalini M, Montagnani M, Charitos IA, Bottalico L, Barile G, Santacroce L. Non-Surgical Therapy and Oral Microbiota Features in Peri-Implant Complications: A Brief Narrative Review. Healthcare (Basel) 2023; 11. [PMID: 36900657 DOI: 10.3390/healthcare11050652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 02/18/2023] [Accepted: 02/21/2023] [Indexed: 02/25/2023] Open
Abstract
The therapeutic discretion in cases of peri-implantitis should take into account the limits and advantages of specific therapeutic itineraries tailored according to each clinical case and each individual patient. This type of oral pathology emphasizes the complex classification and diagnostic issues coupled with the need for targeted treatments, in light of the oral peri-implant microbiota changes. This review highlights the current indications for the non-surgical treatment of peri-implantitis, describing the specific therapeutic efficacy of different approaches and discussing the more appropriate application of single non-invasive therapies The non-surgical treatment choice with antiseptics or antibiotics (single or combined, local, or systemic) for short courses should be considered on a case-by-case basis to minimize the incidence of side effects and concomitantly avoid disease progression.
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Tain YL, Hsu CN. Role of the Gut Microbiota in Children with Kidney Disease. Children (Basel) 2023; 10:children10020269. [PMID: 36832398 PMCID: PMC9955067 DOI: 10.3390/children10020269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Revised: 01/26/2023] [Accepted: 01/29/2023] [Indexed: 02/04/2023]
Abstract
Disruption of the composition and structure of the gut microbiota, namely dysbiosis, dictates the pathophysiology of kidney diseases. The bidirectional kidney-gut axis is of interest in chronic kidney disease (CKD); the uremic milieu leads to intestinal dysbiosis and gut microbial metabolites and toxins implicated in the loss of kidney function and increased comorbidity burden. Considering that kidney diseases can originate in childhood or even earlier in fetal life, identification of the pathogenetic connection between gut microbiota dysbiosis and the development of pediatric renal diseases deserves more attention. This review concentrates on the pathogenic link between dysbiotic gut microbiota and pediatric renal diseases, covering CKD, kidney transplantation, hemodialysis and peritoneal dialysis, and idiopathic nephrotic syndrome. Gut microbiota-targeted therapies including dietary intervention, probiotics, prebiotics, postbiotics and fecal microbial transplantation are discussed for their potential for the treatment of pediatric renal diseases. A deeper understanding of gut microbiota in pediatric renal diseases will aid in developing innovative gut microbiota-targeted interventions for preventing or attenuating the global burden of kidney diseases.
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Affiliation(s)
- You-Lin Tain
- Division of Pediatric Nephrology, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 833, Taiwan
- Institute for Translational Research in Biomedicine, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 833, Taiwan
- College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
| | - Chien-Ning Hsu
- Department of Pharmacy, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 833, Taiwan
- School of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Correspondence: ; Tel.: +886-975-368-975; Fax: +886-7733-8009
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