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Liu X, Fan H, Meng Z, Wu Z, Gu R, Zhu X, Gan H, Dou G. Combined Silver Sulfadiazine Nanosuspension with Thermosensitive Hydrogel: An Effective Antibacterial Treatment for Wound Healing in an Animal Model. Int J Nanomedicine 2023; 18:679-691. [PMID: 36816331 PMCID: PMC9930683 DOI: 10.2147/ijn.s395004] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 02/01/2023] [Indexed: 02/12/2023] Open
Abstract
Introduction Silver sulfadiazine (AgSD) is widely used in burn wound treatment due to its broad-spectrum antibacterial activity. However, its application in wound healing is greatly hindered by the low solubility of AgSD particles and their cellular cytotoxicity. Herein, we studied the safety and in vivo efficacy of nano-sized silver sulfadiazine loaded in poloxamer thermosensitive hydrogel (NS/Gel). Methods In NS/Gel, silver sulfadiazine was prepared into silver sulfadiazine nanosuspension (NS) to improve the solubility and enhance its antibacterial activity, whereas the poloxamer thermosensitive hydrogel was selected as a drug carrier of NS to achieve slow drug release and reduced cytotoxicity. The acute toxicity of silver sulfadiazine nanosuspension was first evaluated in healthy mice, and its median lethal dose (LD50) was calculated by the modified Karber method. Furthermore, in vivo antibacterial effect and wound healing property of NS/Gel were evaluated on the infected deep second-degree burn wound mice model. Results The mortality ratio of mice was concentration-dependent, and the LD50 for silver sulfadiazine nanosuspension was estimated to be 252.1 mg/kg (230.8 to 275.4 mg/kg, 95% confidence limit). The in vivo dosages used for burn wound treatment (40-50 mg/kg) were far below LD50 (252.1 mg/kg). NS/Gel significantly accelerated wound healing in the deep second wound infection mice model, achieving > 85% wound contraction on day 14. Staphylococcus aureus in the wound region was eradicated after 7 days in NS/Gel group, while the bacterial colony count was still measurable in the control group. Histological analysis and cytokines measurement confirmed that the mice treated with NS/Gel exhibited well-organized epithelium and multiple keratinized cell layers compared to control groups with the modulated expression of IL-6, VEGF, and TGF-β. Conclusion The combination of silver sulfadiazine nanosuspension and thermo-responsive hydrogel has great potential in clinical burn wound treatment.
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Affiliation(s)
- Xiaoya Liu
- Department of Pharmacy, Shenzhen Children’s Hospital, Shenzhen, Guangdong Province, 518026, People’s Republic of China,Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Academy of Military Medical Sciences, Beijing, 100850, People’s Republic of China
| | - Haiyang Fan
- Department of Thoracic Surgery, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, Guangdong Province, 518102, People’s Republic of China
| | - Zhiyun Meng
- Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Academy of Military Medical Sciences, Beijing, 100850, People’s Republic of China
| | - Zhuona Wu
- Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Academy of Military Medical Sciences, Beijing, 100850, People’s Republic of China
| | - Ruolan Gu
- Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Academy of Military Medical Sciences, Beijing, 100850, People’s Republic of China
| | - Xiaoxia Zhu
- Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Academy of Military Medical Sciences, Beijing, 100850, People’s Republic of China
| | - Hui Gan
- Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Academy of Military Medical Sciences, Beijing, 100850, People’s Republic of China
| | - Guifang Dou
- Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Academy of Military Medical Sciences, Beijing, 100850, People’s Republic of China,Correspondence: Guifang Dou; Hui Gan, Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Academy of Military Medical Sciences, Beijing, 100850, People’s Republic of China, Tel +86 10 66932951, Fax +86 10 66931993, Email ;
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Muacevic A, Adler JR. Pediatric First-Degree Burn Management With Honey and 1% Silver Sulfadiazine (Ag-SD): Comparison and Contrast. Cureus 2022; 14:e32842. [PMID: 36570107 PMCID: PMC9779910 DOI: 10.7759/cureus.32842] [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] [Accepted: 12/22/2022] [Indexed: 12/24/2022] Open
Abstract
Background The cardinal area of managing fire wounds is guided by adequately evaluating the burn-induced lesion's profundity and size. Superficial second-degree burns are often treated through daily reinstating with fresh sterile bandaging with appropriate topical antimicrobials to allow rapid spontaneous epithelialization. Around the world, a wide variety of substances are used to treat these wounds, from honey to synthetic biological dressings. Objective This study intended to determine honey's therapeutic potential compared with 1% silver sulfadiazine (Ag-SD) in arsenal-caused contusion medicament fulfillment. Methods A total of 70 cases were evaluated in this research work after fulfilling the required selection criteria during the study period of January 2014 to December 2014 and January 2017 to December 2017. Purposive selection criteria were adopted in the study to select research patients. The patients in Group-1 (n = 35) relied on honey as medication, while patients in Group-2 (n = 35) relied on 1% Ag-SD. Results In Group-1, exudation (68.4%) and sloughing (82.9%) were substantially reduced by Days 3 and 5 of therapeutic intervention, respectively. However, in Group-2, a reduction of exudation (17.1%) and sloughing (22.9%) occurred after Days 3 and 5 of treatment, respectively. Completion of the epithelialization process was observed among Group-1 and Group-2 cases. It was detected after Days 7 and 10 of treatment at 36.3% and 77% (Group-1) and 27% and 67% (Group-2), respectively. Around 3 ml of 1% honey was required per body surface area per dressing in Group-1. On the other hand, in Group-2, 2 gm Ag-SD was needed per body surface area per dressing. Conclusion Patients treated with honey found better clinical outcomes in managing superficial partial-thickness burns.
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Nainu F, Permana AD, Djide NJN, Anjani QK, Utami RN, Rumata NR, Zhang J, Emran TB, Simal-Gandara J. Pharmaceutical Approaches on Antimicrobial Resistance: Prospects and Challenges. Antibiotics (Basel) 2021; 10:981. [PMID: 34439031 PMCID: PMC8388863 DOI: 10.3390/antibiotics10080981] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2021] [Revised: 08/07/2021] [Accepted: 08/12/2021] [Indexed: 02/06/2023] Open
Abstract
The rapid increase in pathogenic microorganisms with antimicrobial resistant profiles has become a significant public health problem globally. The management of this issue using conventional antimicrobial preparations frequently results in an increase in pathogen resistance and a shortage of effective antimicrobials for future use against the same pathogens. In this review, we discuss the emergence of AMR and argue for the importance of addressing this issue by discovering novel synthetic or naturally occurring antibacterial compounds and providing insights into the application of various drug delivery approaches, delivered through numerous routes, in comparison with conventional delivery systems. In addition, we discuss the effectiveness of these delivery systems in different types of infectious diseases associated with antimicrobial resistance. Finally, future considerations in the development of highly effective antimicrobial delivery systems to combat antimicrobial resistance are presented.
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Affiliation(s)
- Firzan Nainu
- Faculty of Pharmacy, Hasanuddin University, Makassar 90245, Sulawesi Selatan, Indonesia; (A.D.P.); (N.J.N.D.); (Q.K.A.); (R.N.U.); (N.R.R.)
| | - Andi Dian Permana
- Faculty of Pharmacy, Hasanuddin University, Makassar 90245, Sulawesi Selatan, Indonesia; (A.D.P.); (N.J.N.D.); (Q.K.A.); (R.N.U.); (N.R.R.)
| | - Nana Juniarti Natsir Djide
- Faculty of Pharmacy, Hasanuddin University, Makassar 90245, Sulawesi Selatan, Indonesia; (A.D.P.); (N.J.N.D.); (Q.K.A.); (R.N.U.); (N.R.R.)
| | - Qonita Kurnia Anjani
- Faculty of Pharmacy, Hasanuddin University, Makassar 90245, Sulawesi Selatan, Indonesia; (A.D.P.); (N.J.N.D.); (Q.K.A.); (R.N.U.); (N.R.R.)
- Medical Biology Centre, School of Pharmacy, Queen’s University Belfast, Belfast BT9 7BL, UK
| | - Rifka Nurul Utami
- Faculty of Pharmacy, Hasanuddin University, Makassar 90245, Sulawesi Selatan, Indonesia; (A.D.P.); (N.J.N.D.); (Q.K.A.); (R.N.U.); (N.R.R.)
- Institute of Pharmaceutical Science, King’s College of London, London SE1 9NH, UK
| | - Nur Rahma Rumata
- Faculty of Pharmacy, Hasanuddin University, Makassar 90245, Sulawesi Selatan, Indonesia; (A.D.P.); (N.J.N.D.); (Q.K.A.); (R.N.U.); (N.R.R.)
- Sekolah Tinggi Ilmu Farmasi Makassar, Makassar 90242, Sulawesi Selatan, Indonesia
| | - Jianye Zhang
- Key Laboratory of Molecular Target & Clinical Pharmacology and the State & NMPA Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & The Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou 511436, China;
| | - Talha Bin Emran
- Department of Pharmacy, BGC Trust University Bangladesh, Chittagong 4381, Bangladesh
| | - Jesus Simal-Gandara
- Nutrition and Bromatology Group, Department of Analytical and Food Chemistry, Faculty of Food Science and Technology, University of Vigo–Ourense Campus, E32004 Ourense, Spain
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Maillard JY, Kampf G, Cooper R. Antimicrobial stewardship of antiseptics that are pertinent to wounds: the need for a united approach. JAC Antimicrob Resist 2021; 3:dlab027. [PMID: 34223101 PMCID: PMC8209993 DOI: 10.1093/jacamr/dlab027] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Long before the nature of infection was recognized, or the significance of biofilms in delayed healing was understood, antimicrobial agents were being used in wound care. In the last 70 years, antibiotics have provided an effective means to control wound infection, but the continued emergence of antibiotic-resistant strains and the documented antibiotic tolerance of biofilms has reduced their effectiveness. A range of wound dressings containing an antimicrobial (antibiotic or non-antibiotic compound) has been developed. Whereas standardized methods for determining the efficacy of non-antibiotic antimicrobials in bacterial suspension tests were developed in the early twentieth century, standardized ways of evaluating the efficacy of antimicrobial dressings against microbial suspensions and biofilms are not available. Resistance to non-antibiotic antimicrobials and cross-resistance with antibiotics has been reported, but consensus on breakpoints is absent and surveillance is impossible. Antimicrobial stewardship is therefore in jeopardy. This review highlights these difficulties and in particular the efficacy of current non-antibiotic antimicrobials used in dressings, their efficacy, and the challenges of translating in vitro efficacy data to the efficacy of dressings in patients. This review calls for a unified approach to developing standardized methods of evaluating antimicrobial dressings that will provide an improved basis for practitioners to make informed choices in wound care.
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Affiliation(s)
- Jean-Yves Maillard
- School of Pharmacy and Pharmaceutical Sciences, Cardiff University, Cardiff, Wales, UK
| | - Günter Kampf
- Institute of Hygiene and Environmental Medicine, University of Greifswald, Germany
| | - Rose Cooper
- School of Sport & Health Sciences, Cardiff Metropolitan University, Cardiff, Wales, UK
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Kjellin M, Qudeimat A, Browne E, Keerthi D, Sunkara A, Kang G, Winfield A, Giannini MA, Maron G, Hayden R, Leung W, Triplett B, Srinivasan A. Effectiveness of Bath Wipes After Hematopoietic Cell Transplantation: A Randomized Trial. J Pediatr Oncol Nurs 2020; 37:390-397. [PMID: 32706285 DOI: 10.1177/1043454220944061] [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: 11/15/2022] Open
Abstract
Objective: Bacteremia is a leading cause of morbidity and mortality in children undergoing hematopoietic cell transplantation (HCT). Infections of vancomycin-resistant enterococci (VRE) and multidrug resistant (MDR) gram-negative rods (GNRs) are common in this population. Our objective was to assess whether experimental bath wipes containing silver were more effective than standard bath wipes containing soap at reducing skin colonization by VRE and MDR GNRs, and nonmucosal barrier injury bacteremia. Study Design: Patients undergoing autologous or allogeneic HCT in a tertiary referral center were randomized to receive experimental or standard bath wipes for 60 days post-HCT. Skin swabs were collected at baseline, discharge, and day +60 post-HCT. The rate of VRE colonization was chosen as the marker for efficacy. Results: Experimental bath wipes were well tolerated. Before the study, the rate of colonization with VRE in HCT recipients was 25%. In an interim analysis of 127 children, one (2%) patient in the experimental arm and two (3%) in the standard arm were colonized with VRE. Two (3%) patients had nonmucosal barrier injury bacteremia in the standard arm, with none in the experimental arm. MDR GNRs were not isolated. The trial was halted because the interim analyses indicated equivalent efficacy of the two methods. Conclusions: Skin cleansing with silver-containing or standard bath wipes resulted in very low and equivalent rates of bacteremia and colonization with VRE and MDR GNRs in children post-HCT. Future studies in other high-risk populations are needed to confirm these results.
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Affiliation(s)
| | - Amr Qudeimat
- St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Emily Browne
- St. Jude Children's Research Hospital, Memphis, TN, USA
| | | | | | - Guolian Kang
- St. Jude Children's Research Hospital, Memphis, TN, USA
| | | | | | | | | | - Wing Leung
- St. Jude Children's Research Hospital, Memphis, TN, USA.,University of Tennessee Health Science Center, Memphis, TN, USA
| | - Brandon Triplett
- St. Jude Children's Research Hospital, Memphis, TN, USA.,University of Tennessee Health Science Center, Memphis, TN, USA
| | - Ashok Srinivasan
- St. Jude Children's Research Hospital, Memphis, TN, USA.,University of Tennessee Health Science Center, Memphis, TN, USA
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Britton HC, Draper M, Talmadge JE. Antimicrobial efficacy of aqueous ozone in combination with short chain fatty acid buffers. Infect Prev Pract 2019; 2:100032. [PMID: 34368688 PMCID: PMC8336142 DOI: 10.1016/j.infpip.2019.100032] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Accepted: 12/09/2019] [Indexed: 12/26/2022] Open
Abstract
Background Mitigating surface contamination by microbes such as S. aureus, Salmonella enterica, or Klebsiella pneumoniae, is an ongoing problem in hospital and food production environments. Aim To determine whether addition of buffering solution to source water used for manufacture of aqueous ozone increases ozone efficacy against ozone-resistant bacterial species. Methods Antimicrobial effects of aqueous ozone were studied in combination with acetate, propionate, or butyrate short chain fatty acids (SCFA) as well as citrate or oxalate buffer formulations against Staphylococcus aureus on glass coupons. Aqueous ozone combined with an acetate buffer was also evaluated against Salmonella enterica and Klebsiella pneumoniae. Findings The acetate, propionate, and butyrate buffered aqueous ozone combinations had a significant 3-4 log reduction of S. aureus (P<0.05) colony forming unit (CFU), while citrate or oxalate buffered aqueous ozone, although statistically significant versus buffer alone, had less activity. Treatment of S. aureus, S. enterica, or K. pneumoniae with acetate buffered aqueous ozone also resulted in a 4 log or greater reduction in CFUs post-treatment for all three species, versus treatment with water alone. Conclusions All buffer systems tested had a significantly greater reduction in CFUs following treatment with the combination of buffer and ozone, compared to treatment with buffer or ozone individually, which has not been previously reported for hard surfaces. These results suggest that SCFA buffered ozone has greater anti-bacterial activity relative to either agent alone, and the activity is independent of the buffering activity. Thus, these formulations have potential to sanitize without residues, using an environmentally conscious formulation.
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Affiliation(s)
- Holly C Britton
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, Nebraska, USA
| | | | - James E Talmadge
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, Nebraska, USA
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8
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Barros CHN, Fulaz S, Stanisic D, Tasic L. Biogenic Nanosilver against Multidrug-Resistant Bacteria (MDRB). Antibiotics (Basel) 2018; 7:E69. [PMID: 30072622 PMCID: PMC6163489 DOI: 10.3390/antibiotics7030069] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Accepted: 07/31/2018] [Indexed: 11/17/2022] Open
Abstract
Multidrug-resistant bacteria (MDRB) are extremely dangerous and bring a serious threat to health care systems as they can survive an attack from almost any drug. The bacteria's adaptive way of living with the use of antimicrobials and antibiotics caused them to modify and prevail in hostile conditions by creating resistance to known antibiotics or their combinations. The emergence of nanomaterials as new antimicrobials introduces a new paradigm for antibiotic use in various fields. For example, silver nanoparticles (AgNPs) are the oldest nanomaterial used for bactericide and bacteriostatic purposes. However, for just a few decades these have been produced in a biogenic or bio-based fashion. This review brings the latest reports on biogenic AgNPs in the combat against MDRB. Some antimicrobial mechanisms and possible silver resistance traits acquired by bacteria are also presented. Hopefully, novel AgNPs-containing products might be designed against MDR bacterial infections.
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Affiliation(s)
- Caio H N Barros
- Laboratory of Chemical Biology, Institute of Chemistry, State University of Campinas, Campinas 13083-970, Brazil.
| | - Stephanie Fulaz
- Laboratory of Chemical Biology, Institute of Chemistry, State University of Campinas, Campinas 13083-970, Brazil.
| | - Danijela Stanisic
- Laboratory of Chemical Biology, Institute of Chemistry, State University of Campinas, Campinas 13083-970, Brazil.
| | - Ljubica Tasic
- Laboratory of Chemical Biology, Institute of Chemistry, State University of Campinas, Campinas 13083-970, Brazil.
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Lam PL, Lee KKH, Wong RSM, Cheng GYM, Bian ZX, Chui CH, Gambari R. Recent advances on topical antimicrobials for skin and soft tissue infections and their safety concerns. Crit Rev Microbiol 2018; 44:40-78. [PMID: 28423970 DOI: 10.1080/1040841x.2017.1313811] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Antimicrobial resistance of disease-related microorganisms is considered a worldwide prevalent and serious issue which increases the failure of treatment outcomes and leads to high mortality. Considering that the increased resistance to systemic antimicrobial therapy often needs of the use of more toxic agents, topical antimicrobial therapy emerges as an attractive route for the treatment of infectious diseases. The topical antimicrobial therapy is based on the absorption of high drug doses in a readily accessible skin surface, resulting in a reduction of microbial proliferation at infected skin sites. Topical antimicrobials retain the following features: (a) they are able to escape the enzymatic degradation and rapid clearance in the gastrointestinal tract or the first-pass metabolism during oral administration; (b) alleviate the physical discomfort related to intravenous injection; (c) reduce possible adverse effects and drug interactions of systemic administrations; (d) increase patient compliance and convenience; and (e) reduce the treatment costs. Novel antimicrobials for topical application have been widely exploited to control the emergence of drug-resistant microorganisms. This review provides a description of antimicrobial resistance, common microorganisms causing skin and soft tissue infections, topical delivery route of antimicrobials, safety concerns of topical antimicrobials, recent advances, challenges and future prospective in topical antimicrobial development.
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Affiliation(s)
- P L Lam
- a Department of Applied Biology and Chemical Technology, State Key Laboratory of Chirosciences , The Hong Kong Polytechnic University , Hong Kong , P.R. China
| | - K K H Lee
- b Department of Medicine and Therapeutics, School of Biomedical Sciences, MOE Key Laboratory for Regenerative Medicine , The Chinese University of Hong Kong , Hong Kong , P.R. China
| | - R S M Wong
- b Department of Medicine and Therapeutics, School of Biomedical Sciences, MOE Key Laboratory for Regenerative Medicine , The Chinese University of Hong Kong , Hong Kong , P.R. China
| | - G Y M Cheng
- c Faculty of Health Sciences , University of Macau , Macau , P.R. China
| | - Z X Bian
- d Clinical Division, School of Chinese Medicine , Hong Kong Baptist University , Hong Kong , P.R. China
| | - C H Chui
- a Department of Applied Biology and Chemical Technology, State Key Laboratory of Chirosciences , The Hong Kong Polytechnic University , Hong Kong , P.R. China
- d Clinical Division, School of Chinese Medicine , Hong Kong Baptist University , Hong Kong , P.R. China
| | - R Gambari
- e Department of Life Sciences and Biotechnology, Centre of Biotechnology , University of Ferrara , Ferrara , Italy
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Nagoba B, Davane M, Gandhi R, Wadher B, Suryawanshi N, Selkar S. Treatment of skin and soft tissue infections caused by Pseudomonas aeruginosa —A review of our experiences with citric acid over the past 20 years. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.wndm.2017.09.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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11
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Fan W, Li Y, Sun Q, Ma T, Fan B. Calcium-silicate mesoporous nanoparticles loaded with chlorhexidine for both anti- Enterococcus faecalis and mineralization properties. J Nanobiotechnology 2016; 14:72. [PMID: 27769275 PMCID: PMC5073856 DOI: 10.1186/s12951-016-0224-7] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2016] [Accepted: 10/12/2016] [Indexed: 11/21/2022] Open
Abstract
Background In infected periapical tissues, Enterococcus faecalis is one of the most common dominant bacteria. Chlorhexidine has been proved to show strong antibacterial ability against E. faecalis but is ineffective in promoting mineralization for tissues around root apex. Mesoporous calcium-silicate nanoparticles are newly synthesized biomaterials with excellent ability to promote mineralization and carry-release bioactive molecules in a controlled manner. In this study, mesoporous calcium-silicate nanoparticles were functionalized with chlorhexidine and their releasing profile, antibacterial ability, effect on cell proliferation and in vitro mineralization property were evaluated. Results The chlorhexidine was successfully incorporated into mesoporous calcium-silicate nanoparticles by a mixing-coupling method. The new material could release chlorhexidine as well as Ca2+ and SiO32− in a sustained manner with an alkaline pH value under different conditions. The antimicrobial ability against planktonic E. faecalis was dramatically improved after chlorhexidine incorporation. The nanoparticles with chlorhexidine showed no negative effect on cell proliferation with low concentrations. On dentin slices, the new synthesized material demonstrated a similar inhibitory effect on E. faecalis as the chlorhexidine. After being immersed in SBF for 9 days, numerous apatite crystals could be observed on surfaces of the material tablets. Conclusions Mesoporous calcium-silicate nanoparticles loaded with chlorhexidine exhibited release of ions and chlorhexidine, low cytotoxicity, excellent antibacterial ability and in vitro mineralization. This material could be developed into a new effective intra-canal medication in dentistry or a new bone defect filling material for infected bone defects.
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Affiliation(s)
- Wei Fan
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, 237 Luoyu Road, Wuhan, 430079, People's Republic of China
| | - Yanyun Li
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, 237 Luoyu Road, Wuhan, 430079, People's Republic of China
| | - Qing Sun
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, 237 Luoyu Road, Wuhan, 430079, People's Republic of China
| | - Tengjiao Ma
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, 237 Luoyu Road, Wuhan, 430079, People's Republic of China
| | - Bing Fan
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, 237 Luoyu Road, Wuhan, 430079, People's Republic of China.
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Gil CSB, Gil VSB, Carvalho SM, Silva GR, Magalhães JT, Oréfice RL, Mansur A, Mansur HS, Patricio PSO, Oliveira LCA. Recycled collagen films as biomaterials for controlled drug delivery. NEW J CHEM 2016. [DOI: 10.1039/c6nj00674d] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Recyclable collagen is a potential candidate to be used as development prototypes in biomaterial scientific research.
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Affiliation(s)
- Camila S. B. Gil
- Department of Metallurgical
- Materials and Mines Engineering
- Federal University of Minas Gerais
- Belo Horizonte
- Brazil
| | - Viviane S. B. Gil
- Department of Metallurgical
- Materials and Mines Engineering
- Federal University of Minas Gerais
- Belo Horizonte
- Brazil
| | - Sandhra M. Carvalho
- Department of Metallurgical
- Materials and Mines Engineering
- Federal University of Minas Gerais
- Belo Horizonte
- Brazil
| | - Gisele R. Silva
- Department of pharmacy of Federal University of São João Del Rei
- Divinópolis
- Brazil
| | - Juliana T. Magalhães
- Department of pharmacy of Federal University of São João Del Rei
- Divinópolis
- Brazil
| | - Rodrigo L. Oréfice
- Department of Metallurgical
- Materials and Mines Engineering
- Federal University of Minas Gerais
- Belo Horizonte
- Brazil
| | - Alexandra Mansur
- Department of Metallurgical
- Materials and Mines Engineering
- Federal University of Minas Gerais
- Belo Horizonte
- Brazil
| | - Herman S. Mansur
- Department of Metallurgical
- Materials and Mines Engineering
- Federal University of Minas Gerais
- Belo Horizonte
- Brazil
| | - Patrícia S. O. Patricio
- Department of Chemistry of Centro Federal de Educação Tecnológica de Minas Gerais
- Belo Horizonte
- Brazil
| | - Luiz C. A. Oliveira
- Department of Chemistry of Federal University of Minas Gerais
- Belo Horizonte
- Brazil
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Zhang LW, Koci J, Jeffery B, Riviere JE, Monteiro-Riviere NA. Safety assessment of potential food ingredients in canine hepatocytes. Food Chem Toxicol 2015; 78:105-15. [PMID: 25660481 DOI: 10.1016/j.fct.2015.02.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2014] [Revised: 01/30/2015] [Accepted: 02/01/2015] [Indexed: 10/24/2022]
Abstract
This research aimed to develop in vitro methods to assess hazard of canine food ingredients. Canine hepatocytes were harvested and cell viability of clove-leaf oil (CLO), eugenol (EUG), lemongrass oil (LGO), guanosine monophosphate (GMP), inosine monophosphate (IMP), sorbose, ginger-root extract (GRE), cinnamon-bark oil (CBO), cinnamaldehyde (CINA), thymol oil (TO), thymol (THYM), and citric acid were assessed with positive controls: acetaminophen (APAP), aflatoxin B1 and xylitol. Molecular Toxicology PathwayFinder array (MTPF) analyzed toxicity mechanisms for LGO. LC50 for APAP was similar among human (3.45), rat (2.35), dog (4.26 mg/ml). Aflatoxin B1 had an LC50 of 4.43 (human), 5.78 (rat) and 6.05 (dog) µg/ml; xylitol did not decrease viability. LC50 of CLO (0.185 ± 0.075(SD)), EUG (0.165 ± 0.112), LGO (0.220 ± 0.012), GRE (1.54 ± 0.31) mg/ml; GMP (166.03 ± 41.83), GMP + IMP (208.67 ± 15.27) mM; CBO (0.08 ± 0.03), CINA (0.11 ± 0.01), TO (0.21 ± 0.03), THYM (0.05 ± 0.01), citric acid (1.58 ± 0.08) mg/ml, while sorbose was non-toxic. LGO induced upregulation of 16 and down-regulation of 24 genes, which CYP and heat shock most affected. These results suggest that in vitro assays such as this may be useful for hazard assessment of food ingredients for altered hepatic function.
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Affiliation(s)
- Leshuai W Zhang
- Department of Anatomy and Physiology, College of Veterinary Medicine, Kansas State University, Manhattan, KS
| | - Juraj Koci
- Department of Anatomy and Physiology, College of Veterinary Medicine, Kansas State University, Manhattan, KS
| | - Brett Jeffery
- Mars Global Food Safety Center, Yanqi Economic Development Zone, Huairou, Beijing, P.R. China 101407
| | - Jim E Riviere
- Department of Anatomy and Physiology, College of Veterinary Medicine, Kansas State University, Manhattan, KS
| | - Nancy A Monteiro-Riviere
- Department of Anatomy and Physiology, College of Veterinary Medicine, Kansas State University, Manhattan, KS.
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