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Alniss HY, Al-Jubeh HM, Msallam YA, Siddiqui R, Makhlouf Z, Ravi A, Hamdy R, Soliman SSM, Khan NA. Structure-based drug design of DNA minor groove binders and evaluation of their antibacterial and anticancer properties. Eur J Med Chem 2024; 271:116440. [PMID: 38678825 DOI: 10.1016/j.ejmech.2024.116440] [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: 12/07/2023] [Revised: 04/09/2024] [Accepted: 04/18/2024] [Indexed: 05/01/2024]
Abstract
Antimicrobial and chemotherapy resistance are escalating medical problem of paramount importance. Yet, research for novel antimicrobial and anticancer agents remains lagging behind. With their reported medical applications, DNA minor groove binders (MGBs) are worthy of exploration. In this study, the approach of structure-based drug design was implemented to generate 11 MGB compounds including a novel class of bioactive alkyne-linked MGBs. The NCI screening protocol was utilized to evaluate the antitumor activity of the target MGBs. Furthermore, a variety of bactericidal, cytopathogenicity, MIC90, and cytotoxicity assays were carried out using these MGBs against 6 medically relevant bacteria: Salmonella enterica, Escherichia coli, Serratia marcescens, Bacillus cereus, Streptococcus pneumoniae and Streptococcus pyogenes. Moreover, molecular docking, molecular dynamic simulations, DNA melting, and isothermal titration calorimetry (ITC) analyses were utilized to explore the binding mode and interactions between the most potent MGBs and the DNA duplex d(CGACTAGTCG)2. NCI results showed that alkyne-linked MGBs (26 & 28) displayed the most significant growth inhibition among the NCI-60 panel. In addition, compounds MGB3, MGB4, MGB28, and MGB32 showed significant bactericidal effects, inhibited B. cereus and S. enterica-mediated cytopathogenicity, and exhibited low cytotoxicity. MGB28 and MGB32 demonstrated significant inhibition of S. pyogenes, whereas MGB28 notably inhibited S. marcescens and all four minor groove binders significantly inhibited B. cereus. The ability of these compounds to bind with DNA and distort its groove dimensions provides the molecular basis for the allosteric perturbation of proteins-DNA interactions by MGBs. This study shed light on the mechanism of action of MGBs and revealed the important structural features for their antitumor and antibacterial activities, which are important to guide future development of MGB derivatives as novel antibacterial and anticancer agents.
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Affiliation(s)
- Hasan Y Alniss
- College of Pharmacy, Department of Medicinal Chemistry, University of Sharjah, 27272, Sharjah, United Arab Emirates; Research Institute for Medical and Health Sciences, University of Sharjah, 27272, Sharjah, United Arab Emirates.
| | - Hadeel M Al-Jubeh
- Research Institute for Medical and Health Sciences, University of Sharjah, 27272, Sharjah, United Arab Emirates
| | - Yousef A Msallam
- College of Pharmacy, Department of Medicinal Chemistry, University of Sharjah, 27272, Sharjah, United Arab Emirates; Research Institute for Medical and Health Sciences, University of Sharjah, 27272, Sharjah, United Arab Emirates
| | - Ruqaiyyah Siddiqui
- College of Arts and Sciences, American University of Sharjah, Sharjah, 26666, United Arab Emirates; Department of Medical Biology, Istinye University, Istanbul, 34010, Turkey
| | - Zinb Makhlouf
- College of Arts and Sciences, American University of Sharjah, Sharjah, 26666, United Arab Emirates
| | - Anil Ravi
- Research Institute for Medical and Health Sciences, University of Sharjah, 27272, Sharjah, United Arab Emirates
| | - Rania Hamdy
- Research Institute for Medical and Health Sciences, University of Sharjah, 27272, Sharjah, United Arab Emirates; Faculty of Pharmacy, Zagazig University, Zagazig, 44519, Egypt
| | - Sameh S M Soliman
- College of Pharmacy, Department of Medicinal Chemistry, University of Sharjah, 27272, Sharjah, United Arab Emirates; Research Institute for Medical and Health Sciences, University of Sharjah, 27272, Sharjah, United Arab Emirates
| | - Naveed A Khan
- Department of Medical Biology, Istinye University, Istanbul, 34010, Turkey; College of Medicine, Department of Clinical Sciences, University of Sharjah, 27272, Sharjah, United Arab Emirates.
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Marpole RM, Bowen AC, Langdon K, Wilson AC, Gibson N. Antibiotics for the treatment of lower respiratory tract infections in children with neurodisability: Systematic review. Acta Paediatr 2024. [PMID: 38591640 DOI: 10.1111/apa.17240] [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] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 03/01/2024] [Accepted: 04/04/2024] [Indexed: 04/10/2024]
Abstract
AIM Determine the optimal antibiotic choice for lower respiratory tract infection (LRTI) in children with neurodisability. METHODS Embase, Ovid Emcare and MEDLINE were searched for studies from inception to January 2023. All studies, except case reports, focusing on the antibiotic treatment of LRTI in children, with neurodisabilities were included. Outcomes included length of stay, intensive care admission and mortality. RESULTS Nine studies met the inclusion criteria (5115 patients). All the studies were of low quality. The shortest length of stay was with anaerobic and gram-positive cover. Five studies used anaerobic, gram-positive and gram-negative cover (e.g., amoxicillin-clavulanic acid), which was frequently adequate. In one large study, it was better than gram-positive and gram-negative cover alone (e.g. ceftriaxone). Those unresponsive or more unwell at presentation improved faster on Pseudomonas aeruginosa cover (e.g., piperacillin-tazobactam). CONCLUSION In this context, anaerobic, gram-positive and gram-negative cover is just as effective as P. aeruginosa cover, supporting empiric treatment with amoxicillin-clavulanic acid. If there is a failure to improve, broadening to include P. aeruginosa could be considered. This is consistent with a consensus statement on the treatment of LRTI in children with neurodisability. An accepted definition for what constitutes LRTI in this cohort is required before designing prospective randomised trials.
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Affiliation(s)
- Rachael M Marpole
- Department of Paediatrics, University of Western Australia, Perth, Western Australia, Australia
- Cerebral Palsy Alliance, Sydney, New South Wales, Australia
| | - Asha C Bowen
- Department of Infectious Diseases, Perth Children's Hospital, Perth, Western Australia, Australia
- Wesfarmers Centre for Vaccines and Infectious Diseases, Telethon Kids Institute, Perth, Western Australia, Australia
| | - Katherine Langdon
- Telethon Kids Institute, Perth, Western Australia, Australia
- Kid's Rehab WA, Perth Children's Hospital, Perth, Western Australia, Australia
| | - Andrew C Wilson
- Respiratory and Sleep Medicine, Perth Children's Hospital, Perth, Western Australia, Australia
- Wal-yan Respiratory Research Centre, Telethon Kids Institute, Perth, Western Australia, Australia
| | - Noula Gibson
- Physiotherapy department, Perth Children's Hospital, Perth, Western Australia, Australia
- Curtin University, Perth, Western Australia, Australia
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Nielsen ND, Dean JT, Shald EA, Conway Morris A, Povoa P, Schouten J, Parchim N. When to Stop Antibiotics in the Critically Ill? Antibiotics (Basel) 2024; 13:272. [PMID: 38534707 DOI: 10.3390/antibiotics13030272] [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: 01/31/2024] [Revised: 03/03/2024] [Accepted: 03/14/2024] [Indexed: 03/28/2024] Open
Abstract
Over the past century, antibiotic usage has skyrocketed in the treatment of critically ill patients. There have been increasing calls to establish guidelines for appropriate treatment and durations of antibiosis. Antibiotic treatment, even when appropriately tailored to the patient and infection, is not without cost. Short term risks-hepatic/renal dysfunction, intermediate effects-concomitant superinfections, and long-term risks-potentiating antimicrobial resistance (AMR), are all possible consequences of antimicrobial administration. These risks are increased by longer periods of treatment and unnecessarily broad treatment courses. Recently, the literature has focused on multiple strategies to determine the appropriate duration of antimicrobial therapy. Further, there is a clinical shift to multi-modal approaches to determine the most suitable timepoint at which to end an antibiotic course. An approach utilising biomarker assays and an inter-disciplinary team of pharmacists, nurses, physicians, and microbiologists appears to be the way forward to develop sound clinical decision-making surrounding antibiotic treatment.
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Affiliation(s)
- Nathan D Nielsen
- Division of Pulmonary, Critical Care and Sleep Medicine, University of New Mexico School of Medicine, Albuquerque, NM 87131, USA
- Section of Transfusion Medicine and Therapeutic Pathology, University of New Mexico School of Medicine, Albuquerque, NM 87131, USA
| | - James T Dean
- Division of Pulmonary, Critical Care and Sleep Medicine, University of New Mexico School of Medicine, Albuquerque, NM 87131, USA
| | - Elizabeth A Shald
- Department of Pharmacy, University of New Mexico Hospital, Albuquerque, NM 87131, USA
| | - Andrew Conway Morris
- Division of Anaesthesia, Department of Medicine, University of Cambridge, Cambridge CB2 0QQ, UK
- Division of Immunology, Department of Pathology, University of Cambridge, Cambridge CB2 1QP, UK
- JVF Intensive Care Unit, Addenbrooke's Hospital, Cambridge CB2 0QQ, UK
| | - Pedro Povoa
- NOVA Medical School, NOVA University of Lisbon, 1169-056 Lisbon, Portugal
- Center for Clinical Epidemiology and Research Unit of Clinical Epidemiology, OUH Odense University Hospital, 5000 Odense, Denmark
- Department of Intensive Care, Hospital de São Francisco Xavier, CHLO, 1449-005 Lisbon, Portugal
| | - Jeroen Schouten
- Department of Intensive Care Medicine, Radboud MC, 6525 GA Nijmegen, The Netherlands
| | - Nicholas Parchim
- Division of Critical Care, Department of Emergency Medicine, University of New Mexico School of Medicine, Albuquerque, NM 87131, USA
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Ou YH, Chang YT, Chen DP, Chuang CW, Tsao KC, Wu CH, Kuo AJ, You HL, Huang CG. Benefit analysis of the auto-verification system of intelligent inspection for microorganisms. Front Microbiol 2024; 15:1334897. [PMID: 38562474 PMCID: PMC10982382 DOI: 10.3389/fmicb.2024.1334897] [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: 11/08/2023] [Accepted: 02/26/2024] [Indexed: 04/04/2024] Open
Abstract
In recent years, the automatic machine for microbial identification and antibiotic susceptibility tests has been introduced into the microbiology laboratory of our hospital, but there are still many steps that need manual operation. The purpose of this study was to establish an auto-verification system for bacterial naming to improve the turnaround time (TAT) and reduce the burden on clinical laboratory technologists. After the basic interpretation of the gram staining results of microorganisms, the appearance of strain growth, etc., the 9 rules were formulated by the laboratory technologists specialized in microbiology for auto-verification of bacterial naming. The results showed that among 70,044 reports, the average pass rate of auto-verification was 68.2%, and the reason for the failure of auto-verification was further evaluated. It was found that the main causes reason the inconsistency between identification results and strain appearance rationality, the normal flora in the respiratory tract and urine that was identified, the identification limitation of the mass spectrometer, and so on. The average TAT for the preliminary report of bacterial naming was 35.2 h before, which was reduced to 31.9 h after auto-verification. In summary, after auto-verification, the laboratory could replace nearly 2/3 of manual verification and issuance of reports, reducing the daily workload of medical laboratory technologists by about 2 h. Moreover, the TAT on the preliminary identification report was reduced by 3.3 h on average, which could provide treatment evidence for clinicians in advance.
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Affiliation(s)
- Yu-Hsiang Ou
- Department of Laboratory Medicine, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Yung-Ta Chang
- Department of Laboratory Medicine, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Ding-Ping Chen
- Department of Laboratory Medicine, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan
- Department of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University, Taoyuan, Taiwan
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang, Gung University, Taoyuan,, Taiwan
| | - Chun-Wei Chuang
- Department of Laboratory Medicine, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Kuo-Chien Tsao
- Department of Laboratory Medicine, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Chiu-Hsiang Wu
- Department of Laboratory Medicine, Chang Gung Memorial Hospital, Keelung, Taiwan
| | - An-Jing Kuo
- Department of Laboratory Medicine, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Huey-Ling You
- Departments of Laboratory Medicine, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, Taiwan
| | - Chung-Guei Huang
- Department of Laboratory Medicine, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan
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5
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Ito H. Benefits and challenges of bronchoalveolar lavage in immunocompromised patients. Eur J Intern Med 2024:S0953-6205(24)00103-1. [PMID: 38458879 DOI: 10.1016/j.ejim.2024.03.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/25/2024] [Accepted: 03/05/2024] [Indexed: 03/10/2024]
Affiliation(s)
- Hiroshi Ito
- Division of General Internal Medicine, Department of Internal Medicine, Tokyo Medical University Ibaraki Medical Center, Japan.
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Chen Y, Wang X, Zeng Z, Lv M, Wang K, Wang H, Tang X. Towards molecular understanding of surface and interface catalytic engineering in TiO 2/TiOF 2 nanosheets photocatalytic antibacterial under visible light irradiation. J Hazard Mater 2024; 465:133429. [PMID: 38232545 DOI: 10.1016/j.jhazmat.2024.133429] [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: 10/18/2023] [Revised: 12/20/2023] [Accepted: 01/01/2024] [Indexed: 01/19/2024]
Abstract
TiO2/TiOF2 Z-scheme nanosheets have been successfully synthesized for photocatalytic antibacterial. The antibacterial efficiency of TiO2/TiOF2 against E. coli and S. aureus were 99.90 % and 81.89 % at low material concentration (110 μg/mL), respectively, which are higher than those of pure TiO2, TiOF2, and Degussa P25. In situ molecular spectroscopy results demonstrate that the microstructure of the synthesized material can be reconstructed and optimized to enhance the exposure of the active sites·H2O and O2 are effectively adsorbed on the catalyst surface and activated to form OH…Ti and O…Ti surface active species. Furthermore, the dense interface formed in TiO2/TiOF2 acts as an efficient transport path for photoexcited electrons from TiO2 to TiOF2, and thus accelerates the formation of reactive oxygen species. Finally, the mechanism of bacterial inactivation is systematically discussed considering the main active substances, cell morphological changes, and activity of antioxidant enzymes.
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Affiliation(s)
- Yuanyuan Chen
- Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming 650500, Yunnan, PR China
| | - Xilun Wang
- School of Chemistry, Sun Yat-sen University, Guangzhou 510275, Guangdong, PR China
| | - Ziruo Zeng
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, Yunnan, PR China
| | - Meiru Lv
- Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming 650500, Yunnan, PR China
| | - Kangfu Wang
- Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming 650500, Yunnan, PR China
| | - Hao Wang
- Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming 650500, Yunnan, PR China.
| | - Xiaoning Tang
- Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming 650500, Yunnan, PR China.
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Mazurkiewicz Ł, Czernikiewicz K, Grygiel-Górniak B. Immunogenetic Aspects of Sarcopenic Obesity. Genes (Basel) 2024; 15:206. [PMID: 38397196 PMCID: PMC10888391 DOI: 10.3390/genes15020206] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Revised: 01/28/2024] [Accepted: 02/01/2024] [Indexed: 02/25/2024] Open
Abstract
Sarcopenic obesity (SO) is a combination of obesity and sarcopenia, with diagnostic criteria defined as impaired skeletal muscle function and altered body composition (e.g., increased fat mass and reduced muscle mass). The mechanism of SO is not yet perfectly understood; however, the pathogenesis includes aging and its complications, chronic inflammation, insulin resistance (IR), and hormonal changes. Genetic background is apparent in the pathogenesis of isolated obesity, which is most often polygenic and is characterized by the additive effect of various genetic factors. The genetic etiology has not been strictly established in SO. Still, many data confirm the existence of pathogenic gene variants, e.g., Fat Mass and Obesity Associated Gene (FTO), beta-2-adrenergic receptor (ADRB2) gene, melanocortin-4 receptor (MC4R) and others with obesity. The literature on the role of these genes is scarce, and their role has not yet been thoroughly established. On the other hand, the involvement of systemic inflammation due to increased adipose tissue in SO plays a significant role in its pathophysiology through the synthesis of various cytokines such as monocyte chemoattractant protein-1 (MCP-1), IL-1Ra, IL-15, adiponectin or CRP. The lack of anti-inflammatory cytokine (e.g., IL-15) can increase SO risk, but further studies are needed to evaluate the exact mechanisms of implications of various cytokines in SO individuals. This manuscript analyses various immunogenetic and non-genetic factors and summarizes the recent findings on immunogenetics potentially impacting SO development.
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Affiliation(s)
| | | | - Bogna Grygiel-Górniak
- Department of Rheumatology, Rehabilitation and Internal Diseases, Poznan University of Medical Sciences, 61-701 Poznan, Poland
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Weaver E, Macartney RA, Irwin R, Uddin S, Hooker A, Burke GA, Wylie MP, Lamprou DA. Liposomal encapsulation of amoxicillin via microfluidics with subsequent investigation of the significance of PEGylated therapeutics. Int J Pharm 2024; 650:123710. [PMID: 38097147 DOI: 10.1016/j.ijpharm.2023.123710] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Revised: 12/11/2023] [Accepted: 12/12/2023] [Indexed: 12/19/2023]
Abstract
With an increasing concern of global antimicrobial resistance, the efforts to improve the formulation of a narrowing library of therapeutic antibiotics must be confronted. The liposomal encapsulation of antibiotics using a novel and sustainable microfluidic method has been employed in this study to address this pressing issue, via a targeted, lower-dose medical approach. The study focusses upon microfluidic parameter optimisation, formulation stability, cytotoxicity, and future applications. Particle sizes of circa. 130 nm, with viable short-term (28-day) physical stability were obtained, using two different non-cytotoxic liposomal formulations, both of which displayed suitable antibacterial efficacy. The microfluidic method allowed for high encapsulation efficiencies (≈77 %) and the subsequent in vitro release profile suggested high limits of antibiotic dissociation from the nanovessels, achieving 90% release within 72 h. In addition to the experimental data, the growing use of poly(ethylene) glycol (PEG) within lipid-based formulations is discussed in relation to anti-PEG antibodies, highlighting the key pharmacological differences between PEGylated and non-PEGylated formulations and their respective advantages and drawbacks. It's surmised that in the case of the formulations used in this study, the addition of PEG upon the liposomal membrane would still be a beneficial feature to possess owing to beneficial features such as stability, antibiotic efficacy and the capacity to further modify the liposomal membrane.
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Affiliation(s)
- Edward Weaver
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK
| | - Robyn A Macartney
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK; Nanotechnology & Integrated Bioengineering Centre (NIBEC), School of Engineering, Ulster University, York Street, Belfast BT15 1ED, UK
| | - Robyn Irwin
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK
| | - Shahid Uddin
- Immunocore Ltd, 92 Park Dr, Milton, Abingdon OX14 4RY, UK
| | - Andrew Hooker
- Immunocore Ltd, 92 Park Dr, Milton, Abingdon OX14 4RY, UK
| | - George A Burke
- Nanotechnology & Integrated Bioengineering Centre (NIBEC), School of Engineering, Ulster University, York Street, Belfast BT15 1ED, UK
| | - Matthew P Wylie
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK
| | - Dimitrios A Lamprou
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK.
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Ramasco F, Méndez R, Suarez de la Rica A, González de Castro R, Maseda E. Sepsis Stewardship: The Puzzle of Antibiotic Therapy in the Context of Individualization of Decision Making. J Pers Med 2024; 14:106. [PMID: 38248807 PMCID: PMC10820263 DOI: 10.3390/jpm14010106] [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: 12/23/2023] [Revised: 01/15/2024] [Accepted: 01/16/2024] [Indexed: 01/23/2024] Open
Abstract
The main recent change observed in the field of critical patient infection has been universal awareness of the need to make better use of antimicrobials, especially for the most serious cases, beyond the application of simple and effective formulas or rigid protocols. The increase in resistant microorganisms, the quantitative increase in major surgeries and interventional procedures in the highest risk patients, and the appearance of a significant number of new antibiotics in recent years (some very specifically directed against certain mechanisms of resistance and others with a broader spectrum of applications) have led us to shift our questions from "what to deal with" to "how to treat". There has been controversy about how best to approach antibiotic treatment of complex cases of sepsis. The individualized and adjusted dosage, the moment of its administration, the objective, and the selection of the regimen are pointed out as factors of special relevance in a critically ill patient where the frequency of resistant microorganisms, especially among the Enterobacterales group, and the emergence of multiple and diverse antibiotic treatment alternatives have made the appropriate choice of antibiotic treatment more complex, requiring a constant updating of knowledge and the creation of multidisciplinary teams to confront new infections that are difficult to treat. In this article, we have reviewed the phenomenon of the emergence of resistance to antibacterials and we have tried to share some of the ideas, such as stewardship, sparing carbapenems, and organizational, microbiological, pharmacological, and knowledge tools, that we have considered most useful and effective for individualized decision making that takes into account the current context of multidrug resistance. The greatest challenge, therefore, of decision making in this context lies in determining an effective, optimal, and balanced empirical antibiotic treatment.
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Affiliation(s)
- Fernando Ramasco
- Department of Anaesthesiology and Surgical Intensive Care, Hospital Universitario de La Princesa, Diego de León 62, 28006 Madrid, Spain; (R.M.); (A.S.d.l.R.)
| | - Rosa Méndez
- Department of Anaesthesiology and Surgical Intensive Care, Hospital Universitario de La Princesa, Diego de León 62, 28006 Madrid, Spain; (R.M.); (A.S.d.l.R.)
| | - Alejandro Suarez de la Rica
- Department of Anaesthesiology and Surgical Intensive Care, Hospital Universitario de La Princesa, Diego de León 62, 28006 Madrid, Spain; (R.M.); (A.S.d.l.R.)
| | - Rafael González de Castro
- Department of Anaesthesiology and Surgical Intensive Care, Hospital Universitario de León, 24071 León, Spain;
| | - Emilio Maseda
- Department of Anaesthesiology and Surgical Intensive Care, Hospital Universitario Quirón Sur Salud, 28922 Madrid, Spain;
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Pfister T, Schröder S, Heck J, Bleich S, Krüger THC, Wedegärtner F, Groh A, Schulze Westhoff M. Potentially inappropriate prescriptions of antibiotics in geriatric psychiatry-a retrospective cohort study. Front Psychiatry 2024; 14:1272695. [PMID: 38264634 PMCID: PMC10803574 DOI: 10.3389/fpsyt.2023.1272695] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 12/18/2023] [Indexed: 01/25/2024] Open
Abstract
Introduction Older patients are frequently affected by infectious diseases and adverse drug reactions (ADRs) of consecutively prescribed antibiotics. Particularly within geriatric psychiatry, high rates of potentially inappropriate prescriptions (PIPs) have been described, significantly complicating pharmacological treatment. Therefore, this study aimed to investigate the frequency and characteristics of antibiotic PIPs in geriatric psychiatry. Methods Medication charts of 139 patient cases (mean age 78.8 years; 69.8% female) receiving antibiotic treatment on a geriatric psychiatric ward were analyzed. Utilizing previously published definitions of antibiotic PIPs, adequacy of the antibiotic prescriptions was subsequently assessed. Results 16.3% of all screened patient cases (139/851) received an antibiotic treatment during their inpatient stay. 59.5% of antibiotic prescriptions were due to urinary tract infections, followed by pulmonary (13.3%) and skin and soft tissue infections (11.3%). 46.7% of all antibiotic prescriptions fulfilled at least one PIP criterium, with the prescription of an antibiotic course for more than seven days as the most common PIP (15.3%). Discussion Antibiotic PIPs can be considered as a frequent phenomenon in geriatric psychiatry. Especially the use of fluoroquinolones and cephalosporins should be discussed critically due to their extensive side effect profiles. Due to the special characteristics of geriatric psychiatric patients, international guidelines on the use of antibiotics should consider frailty and psychotropic polypharmacy of this patient population more closely.
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Affiliation(s)
- Tabea Pfister
- Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School, Hannover, Germany
| | - Sebastian Schröder
- Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School, Hannover, Germany
| | - Johannes Heck
- Institute for Clinical Pharmacology, Hannover Medical School, Hannover, Germany
| | - Stefan Bleich
- Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School, Hannover, Germany
| | - Tillmann H. C. Krüger
- Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School, Hannover, Germany
| | - Felix Wedegärtner
- Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School, Hannover, Germany
| | - Adrian Groh
- Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School, Hannover, Germany
| | - Martin Schulze Westhoff
- Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School, Hannover, Germany
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Wang R, Li N, Liu H, Li R, Zhang L, Liu Z, Peng Q, Ren L, Liu J, Li B, Jiao T. Construction of cellulose acetate-based composite nanofiber films with effective antibacterial and filtration properties. Int J Biol Macromol 2024; 254:128102. [PMID: 37972842 DOI: 10.1016/j.ijbiomac.2023.128102] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 11/11/2023] [Accepted: 11/13/2023] [Indexed: 11/19/2023]
Abstract
In recent years, the safety of public health has attracted more and more attention. In order to avoid the spread of bacteria and reduce the diseases caused by their invasion of the human body, novel filtration and antibacterial materials have attracted more and more attention. In this work, the antibacterial agents silver nanoparticles (AgNPs) and cetylpyridine bromide (CPB) were introduced into a cellulose acetate (CA) nanofiber film by electrospinning technology to prepare CA-based composite films with good antibacterial and filtration properties. The results of the antibacterial test of the composite nanofiber films showed that AgNPs and CPB had synergistic antibacterial effects and exhibited good antibacterial properties against a variety of bacteria. In addition, in vitro cytotoxicity, skin irritation and skin sensitization experiments proved that the CA/AgNPs, CA/CPB and CA/CPB/AgNPs films produced no skin irritation or sensitization in the short term. These are expected to become potential materials for the preparation of new antibacterial masks. This work provides a new idea for developing materials with good antibacterial properties for enhancing protection via filtration masks.
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Affiliation(s)
- Ran Wang
- State Key Laboratory of Metastable Materials Science and Technology, Hebei Key Laboratory of Applied Chemistry, Hebei Key Laboratory of Nano-biotechnology, Hebei Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource Reuse, Yanshan University, Qinhuangdao 066004, China
| | - Na Li
- State Key Laboratory of Metastable Materials Science and Technology, Hebei Key Laboratory of Applied Chemistry, Hebei Key Laboratory of Nano-biotechnology, Hebei Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource Reuse, Yanshan University, Qinhuangdao 066004, China
| | - Hui Liu
- State Key Laboratory of Metastable Materials Science and Technology, Hebei Key Laboratory of Applied Chemistry, Hebei Key Laboratory of Nano-biotechnology, Hebei Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource Reuse, Yanshan University, Qinhuangdao 066004, China
| | - Ran Li
- School of Basic Medicine, Chengde Medical College, Chengde 067000, China
| | - Lexin Zhang
- State Key Laboratory of Metastable Materials Science and Technology, Hebei Key Laboratory of Applied Chemistry, Hebei Key Laboratory of Nano-biotechnology, Hebei Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource Reuse, Yanshan University, Qinhuangdao 066004, China
| | - Zhiwei Liu
- State Key Laboratory of Metastable Materials Science and Technology, Hebei Key Laboratory of Applied Chemistry, Hebei Key Laboratory of Nano-biotechnology, Hebei Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource Reuse, Yanshan University, Qinhuangdao 066004, China
| | - Qiuming Peng
- State Key Laboratory of Metastable Materials Science and Technology, Hebei Key Laboratory of Applied Chemistry, Hebei Key Laboratory of Nano-biotechnology, Hebei Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource Reuse, Yanshan University, Qinhuangdao 066004, China
| | - Liqun Ren
- School of Basic Medicine, Chengde Medical College, Chengde 067000, China.
| | - Jinxia Liu
- School of Basic Medicine, Chengde Medical College, Chengde 067000, China.
| | - Bingfan Li
- School of Vehicles and Energy, Yanshan University, Qinhuangdao 066004, China.
| | - Tifeng Jiao
- State Key Laboratory of Metastable Materials Science and Technology, Hebei Key Laboratory of Applied Chemistry, Hebei Key Laboratory of Nano-biotechnology, Hebei Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource Reuse, Yanshan University, Qinhuangdao 066004, China.
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12
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Bass GA, Chang CWJ, Sorce LR, Subramanian S, Laytin AD, Somodi R, Gray JR, Lane-Fall M, Kaplan LJ. Gamification in Critical Care Education and Practice. Crit Care Explor 2024; 6:e1034. [PMID: 38259864 PMCID: PMC10803028 DOI: 10.1097/cce.0000000000001034] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2024] Open
Abstract
OBJECTIVES To explore gamification as an alternative approach to healthcare education and its potential applications to critical care. DATA SOURCES English language manuscripts addressing: 1) gamification theory and application in healthcare and critical care and 2) implementation science focused on the knowledge-to-practice gap were identified in Medline and PubMed databases (inception to 2023). STUDY SELECTION Studies delineating gamification underpinnings, application in education or procedural mentoring, utilization for healthcare or critical care education and practice, and analyses of benefits or pitfalls in comparison to other educational or behavioral modification approaches. DATA EXTRACTION Data indicated the key gamification tenets and the venues within which they were used to enhance knowledge, support continuing medical education, teach procedural skills, enhance decision-making, or modify behavior. DATA SYNTHESIS Gamification engages learners in a visual and cognitive fashion using competitive approaches to enhance acquiring new knowledge or skills. While gamification may be used in a variety of settings, specific design elements may relate to the learning environment or learner styles. Additionally, solo and group gamification approaches demonstrate success and leverage adult learning theory elements in a low-stress and low-risk setting. The potential for gamification-driven behavioral modification to close the knowledge-to-practice gap and enable guideline and protocol compliance remains underutilized. CONCLUSIONS Gamification offers the potential to substantially enhance how critical care professionals acquire and then implement new knowledge in a fashion that is more engaging and rewarding than traditional approaches. Accordingly, educational undertakings from courses to offerings at medical professional meetings may benefit from being gamified.
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Affiliation(s)
- Gary Alan Bass
- Division of Trauma, Surgical Critical Care and Emergency Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | | | - Lauren R Sorce
- Department of Pediatrics (Critical Care), Northwestern University, Chicago, IL
| | - Sanjay Subramanian
- Department of Anesthesiology, Critical Care Medicine, Washington University in St. Louis, St. Louis, MO
- Omnicure Inc., St. Louis, MO
| | - Adam D Laytin
- Departments of Anesthesia and Critical Care Medicine and Emergency Medicine, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Reka Somodi
- Section of Surgical Critical Care, Corporal Michael J. Crescenz VA Medical Center, Philadelphia, PA
| | - Jaime R Gray
- Department of Pharmacy, Temple University Health System, Philadelphia, PA
| | - Meghan Lane-Fall
- Departments of Anesthesiology and Critical Care Medicine and Biostatistics, Epidemiology, and Informatics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Lewis J Kaplan
- Division of Trauma, Surgical Critical Care and Emergency Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
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13
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Lv M, Wang K, Liang X, Chen Y, Tang X, Liu R, Chen W. Principle of CoS 2/ZnIn 2S 4 heterostructure effect and its mechanism of action in a visible light-catalyzed antibacterial process. J Colloid Interface Sci 2024; 653:879-893. [PMID: 37774652 DOI: 10.1016/j.jcis.2023.09.118] [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: 07/05/2023] [Revised: 09/01/2023] [Accepted: 09/19/2023] [Indexed: 10/01/2023]
Abstract
The development of visible-light-driven catalytic antimicrobial technology is a significant challenge. In this study, heterojunctions were constructed for the appropriate modification of semiconductor-based photocatalysts. A simple hydrothermal method was used for material reconstruction, and smaller CoS2 nanoparticles were deposited and in situ grown on two-dimensional nanoflower-like ZnIn2S4 carriers to form CoS2/ZnIn2S4 (CS/ZIS) Schottky heterojunctions. Systematic study via characterization techniques and density functional theory calculations indicated that the excellent photocatalytic activity of CS/ZIS stemmed from the solid interfacial coupling between the two solid-phase materials. These materials acted as co-catalysts to increase the number of active reaction sites, enhance charge transfer, drive unidirectional electron movement, and improve charge separation efficiency, which effectively facilitated the production of reactive oxygen species (ROS). The optimized CS/ZIS heterojunction exhibited excellent performance for the efficient photocatalytic degradation of organic matter and inactivation of Escherichia coli (E. coli) compared with the ZnIn2S4 photocatalyst. Moreover, the antibacterial mechanism of the heterojunction photocatalyst and the extent of damage to the cell membrane and internal cytoplasm were explored by performing various assays. It was demonstrated that superoxide radicals are the predominant active species and multiple ROS act together to cause oxidative stress damage and cell inactivation.
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Affiliation(s)
- Meiru Lv
- Faculty of Chemical Engineering Kunming University of Science and Technology, Kunming 650500, Yunnan, China.
| | - Kangfu Wang
- Faculty of Chemical Engineering Kunming University of Science and Technology, Kunming 650500, Yunnan, China.
| | - Xingkun Liang
- Faculty of Chemical Engineering Kunming University of Science and Technology, Kunming 650500, Yunnan, China.
| | - Yuanyuan Chen
- Faculty of Chemical Engineering Kunming University of Science and Technology, Kunming 650500, Yunnan, China.
| | - Xiaoning Tang
- Faculty of Chemical Engineering Kunming University of Science and Technology, Kunming 650500, Yunnan, China.
| | - Rongliang Liu
- Zhuhai Painter Science and Technology Co., LTD., Zhuhai, 519090, Guangdong, China.
| | - Wei Chen
- Zhuhai Painter Science and Technology Co., LTD., Zhuhai, 519090, Guangdong, China.
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Zhou Y, Cai CY, Wang C, Hu GM, Li YT, Han MJ, Hu S, Cheng P. Ferric-loaded lipid nanoparticles inducing ferroptosis-like cell death for antibacterial wound healing. Drug Deliv 2023; 30:1-8. [DOI: 10.1080/10717544.2022.2152134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Affiliation(s)
- Ying Zhou
- Department of Gynecology, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Chong-Yang Cai
- Department of Urology, Hangzhou TCM Hospital Affiliated to Zhejiang Chinese Medical University, Hangzhou, China
| | - Cheng Wang
- School of Pharmacy, Changzhou University, Changzhou, China
| | - Guo-Ming Hu
- Department of General Surgery (Breast and Thyroid Surgery), Shaoxing People's Hospital (Shaoxing Hospital, Zhejiang University School of Medicine), Zhejiang, China
| | - Yu-Ting Li
- School of Pharmacy, Changzhou University, Changzhou, China
| | - Meng-Jiao Han
- Department of Nephrology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Shen Hu
- Department of Obstetrics, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Pu Cheng
- Department of Gynecology, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Key Laboratory of Tumor Microenvironment and Immune Therapy of Zhejiang Province
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15
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Bashir N, Dablool AS, Khan MI, Almalki MG, Ahmed A, Mir MA, Hamdoon AAE, Elawad MA, Mosa OF, Niyazov LN, Elkhalifa MEM, Alghamdi MA, Anwar A, Ayaz M. Antibiotics resistance as a major public health concern: A pharmaco-epidemiological study to evaluate prevalence and antibiotics susceptibility-resistance pattern of bacterial isolates from multiple teaching hospitals. J Infect Public Health 2023; 16 Suppl 1:61-68. [PMID: 37880004 DOI: 10.1016/j.jiph.2023.09.019] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2023] [Revised: 09/22/2023] [Accepted: 09/27/2023] [Indexed: 10/27/2023] Open
Abstract
BACKGROUND Multi Drugs Resistance (MDR) is among the most worrisome healthcare issues resulting from inappropriate and indiscriminate utilization of antimicrobial agents which has compromised the efficacy and reliability of antimicrobial agents (AMAs). This has not only put a huge burden on the health care system but also is a major cause of morbidity and mortality. This project was designed to evaluate the prevalence of various microbial strains among patients admitted to various teaching hospitals and to assess their susceptibility and resistance towards clinically approved antibiotics. METHODS The study was conducted during August 2021-February 2022 to determine the prevalence of common resistant strains of bacteria and to analyze their susceptibility pattern to the commonly prescribed antibiotics using standard procedures. One hundred and thirty biological samples including urine, blood, cerebrospinal fluid (CSF), wound swabs, pus and sputum were collected from the site of infection from the patients admitted at different wards of North West General Hospital (NWGH), Peshawar, Pakistan, Khyber Teaching Hospital (KTH), Peshawar Pakistan, and Hayat Abad Medical Complex (HMC) Peshawar Pakistan. Samples were collected and cultured following standard hospital procedures. The cultured samples were subjected to identification procedures including Gram staining, morphological characterization of bacterial colonies and biochemical assessments. The identified bacteria were tested for their susceptibility using Kirby-Bauer disc diffusion method. The diameter of Inhibitory Zones (DIZ) was analyzed following Clinical and Laboratory Standards Institute (CLSI) criteria. Minimum Inhibitory Concentrations (MICs) were evaluated using agar dilution method. Antimicrobials sensitivity were presented as antibiogram following CLSI M39 standard. RESULTS A total of one hundred and thirty biological samples were collected, out of which one hundred and nine samples were positive for bacterial growth and were further processed for detailed analysis. The frequency and type of bacteria isolated from various cultures indicated that Gram negative bacteria (n = 92/109) were more dominant than Gram-positive (n = 17/109) pathogens. The most prevalent bacteria isolated was Escherichia coli (29.35 %), followed by Staphylococcus aureus (15.59 %), and Klebsiella spp, (12.84 %). In addition, other pathogens including, Enterobacter spp, Citrobacter spp, and Acinetobacter spp. showed a prevalence of 9.175 %, 8.25 %, and 5.50 % respectively. As indicated in the antbiogram, several organisms exhibited considerble decline in the sensitivies towards various antibiotics. A high percentage of resistance was observed against some antibiotics including trimethoprim, co-trimoxazole, amoxicillin/clavulanate, ciprofloxacin, piperacillin/tazobactam, cefotaxime and ceftazidime. CONCLUSION The prevalence of resistant strains of pathogens is increasing day by day, while the antibiotics commonly prescribed against them are losing their efficacy, which is pushing the world to the era of pre-antibiotics. Unfortunately, the discovery of novel antibiotics is limited and researchers speculate that the is pushing towards pre-antibiotics era. Subsequently, efforts must be directed towards ensuring rational antibiotics use to prevent emergence of MDR pathogens. Our findings indicated that Gram negative bacteria including Escherichia coli was most prevalent. Other bacterial strains including S. aureus, Klebsiella spp, Enterobacter spp, Citrobacter spp, and Acinetobacter spp. were found among the causative agents. Unfortunately, considerable decline in the sensitivities of various bacterial isolated were observed towards the tested antibiotics. Previous studies reported the high prevalence of E. coli and S. aureus in clinical samples of Pakistani hospitals including hospitals in Peshawar and thus our findings are in agreement with the previous reports. Pharmacists being experts can play their role by promoting the optimal use of antimicrobial agents and educating healthcare professionals, patients and the public.
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Affiliation(s)
- Nasreena Bashir
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King khalid University, Abha 61421, Saudi Arabia
| | - Anas S Dablool
- Public Health Department, Health Sciences college at Al-Lieth, Umm Al-Qura University, Saudi Arabia
| | - Mohammad Inam Khan
- Public Health Department, Collage of Health Sciences, Saudi Electronic University, Abha 61421, Saudi Arabia
| | - Meshari G Almalki
- Public Health Department, Health Sciences college at Al-Lieth, Umm Al-Qura University, Saudi Arabia
| | - Alshebli Ahmed
- Public Health Department, Health Sciences college at Al-Lieth, Umm Al-Qura University, Saudi Arabia; Faculty of Public and Environmental Health, University of Khartoum, Khartoum, Sudan.
| | - Mushtaq Ahmad Mir
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King khalid University, Abha 61421, Saudi Arabia
| | - Alashary Adam Eisa Hamdoon
- Public Health Department, Health Sciences college at Al-Lieth, Umm Al-Qura University, Saudi Arabia; Faculty of Public and Environmental Health, University of Khartoum, Khartoum, Sudan
| | - Mohammed Ahmed Elawad
- Public Health Department, Health Sciences college at Al-Lieth, Umm Al-Qura University, Saudi Arabia; Faculty of Public and Environmental Health, University of Khartoum, Khartoum, Sudan
| | - Osama F Mosa
- Public Health Department, Health Sciences college at Al-Lieth, Umm Al-Qura University, Saudi Arabia
| | - Laziz N Niyazov
- Medical Chemistry Department, Bukhara State Medical Institute Named After Abu Ali Ibn Sino, Bukhara, Uzbekistan
| | - Modawy Elnour Modawy Elkhalifa
- Public Health Department, Health Sciences college at Al-Lieth, Umm Al-Qura University, Saudi Arabia; Faculty of Public and Environmental Health, University of Khartoum, Khartoum, Sudan
| | - Mashael A Alghamdi
- Department of Chemistry, Imam Mohammad Ibn Saud Islamic University (IMSIU), P.O. Box. 90950, Riyadh 11623, Saudi Arabia
| | - Amjad Anwar
- Department of Pharmacy, Faculty of Biological Sciences, University of Malakand, Dir (L), Chakdara, 18000 KP, Pakistan
| | - Muhammad Ayaz
- Department of Pharmacy, Faculty of Biological Sciences, University of Malakand, Dir (L), Chakdara, 18000 KP, Pakistan.
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Zai MJ, Cheesman MJ, Cock IE. Terminalia petiolaris A.Cunn ex Benth. Extracts Have Antibacterial Activity and Potentiate Conventional Antibiotics against β-Lactam-Drug-Resistant Bacteria. Antibiotics (Basel) 2023; 12:1643. [PMID: 37998845 PMCID: PMC10669112 DOI: 10.3390/antibiotics12111643] [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: 10/31/2023] [Revised: 11/15/2023] [Accepted: 11/17/2023] [Indexed: 11/25/2023] Open
Abstract
Terminalia petiolaris A. Cunn. Ex Benth. (genus: Terminalia, family: Combretaceae) is native to Australia. Terminalia spp. have traditionally been used to treat various ailments, including bacterial infections. Solvents of varying polarity were used to extract compounds from leaves of this species, and the extracts were tested against a panel of bacteria, including antibiotic-resistant strains. The methanolic and water extracts showed substantial inhibitory activity against several bacteria, including antibiotic-resistant strains in both disc diffusion and liquid dilution assays. Combining these extracts with selected conventional antibiotics enhanced the inhibition of bacterial growth for some combinations, while others showed no significant interaction. In total, two synergistic, twenty-five additive, twenty-three non-interactive and one antagonistic interaction were observed. The methanolic and ethyl acetate plant extracts were found to be non-toxic in Artemia franciscana nauplii toxicity assays. A liquid chromatography-mass spectrometry metabolomics analysis identified several flavonoid compounds, including miquelianin, trifolin and orientin, which might contribute to the observed activities. The potential modes of these active extracts are further discussed in this study.
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Affiliation(s)
- Muhammad Jawad Zai
- Centre for Planetary Health and Food Security, Griffith University, Brisbane, QLD 4111, Australia; (M.J.Z.); (I.E.C.)
- School of Environment and Science, Griffith University, Brisbane, QLD 4111, Australia
| | - Matthew James Cheesman
- School of Pharmacy and Medical Sciences, Griffith University, Southport, QLD 4222, Australia
| | - Ian Edwin Cock
- Centre for Planetary Health and Food Security, Griffith University, Brisbane, QLD 4111, Australia; (M.J.Z.); (I.E.C.)
- School of Environment and Science, Griffith University, Brisbane, QLD 4111, Australia
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17
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Ventero MP, Haro-Moreno JM, Molina-Pardines C, Sánchez-Bautista A, García-Rivera C, Boix V, Merino E, López-Pérez M, Rodríguez JC. Role of Relebactam in the Antibiotic Resistance Acquisition in Pseudomonas aeruginosa: In Vitro Study. Antibiotics (Basel) 2023; 12:1619. [PMID: 37998821 PMCID: PMC10668777 DOI: 10.3390/antibiotics12111619] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 10/30/2023] [Accepted: 11/08/2023] [Indexed: 11/25/2023] Open
Abstract
BACKGROUND Pseudomonas aeruginosa shows resistance to several antibiotics and often develops such resistance during patient treatment. OBJECTIVE Develop an in vitro model, using clinical isolates of P. aeruginosa, to compare the ability of the imipenem and imipenem/relebactam to generate resistant mutants to imipenem and to other antibiotics. Perform a genotypic analysis to detect how the selective pressure changes their genomes. METHODS The antibiotics resistance was studied by microdilution assays and e-test, and the genotypic study was performed by NGS. RESULTS The isolates acquired resistance to imipenem in an average of 6 days, and to imipenem/relebactam in 12 days (p value = 0.004). After 30 days of exposure, 75% of the isolates reached a MIC > 64 mg/L for imipenem and 37.5% for imipenem/relebactam (p value = 0.077). The 37.5% and the 12.5% imipenem/relebactam mutants developed resistance to piperacillin/tazobactam and ceftazidime, respectively, while the 87.5% and 37.5% of the imipenem mutants showed resistance to these drugs (p value = 0.003, p value = 0.015). The main biological processes altered by the SNPs were the glycosylation pathway, transcriptional regulation, histidine kinase response, porins, and efflux pumps. DISCUSSION The addition of relebactam delays the generation of resistance to imipenem and limits the cross-resistance to other beta-lactams. The clinical relevance of this phenomenon, which has the limitation that it has been performed in vitro, should be evaluated by stewardship programs in clinical practice, as it could be useful in controlling multi-drug resistance in P. aeruginosa.
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Affiliation(s)
- Maria Paz Ventero
- Microbiology Department, Dr. Balmis University General Hospital, Alicante Institute for Health and Biomedical Research (ISABIAL), 03010 Alicante, Spain; (M.P.V.); (A.S.-B.); (C.G.-R.); (J.C.R.)
| | - Jose M. Haro-Moreno
- Evolutionary Genomics Group, División de Microbiología, Universidad Miguel Hernández, Apartado 18, 03550 San Juan de Alicante, Spain
- Institut de Biologie Structurale J.-P. Ebel, Université Grenoble Alpes, 38000 Grenoble, France
| | - Carmen Molina-Pardines
- Microbiology Department, Dr. Balmis University General Hospital, Alicante Institute for Health and Biomedical Research (ISABIAL), 03010 Alicante, Spain; (M.P.V.); (A.S.-B.); (C.G.-R.); (J.C.R.)
- Evolutionary Genomics Group, División de Microbiología, Universidad Miguel Hernández, Apartado 18, 03550 San Juan de Alicante, Spain
| | - Antonia Sánchez-Bautista
- Microbiology Department, Dr. Balmis University General Hospital, Alicante Institute for Health and Biomedical Research (ISABIAL), 03010 Alicante, Spain; (M.P.V.); (A.S.-B.); (C.G.-R.); (J.C.R.)
| | - Celia García-Rivera
- Microbiology Department, Dr. Balmis University General Hospital, Alicante Institute for Health and Biomedical Research (ISABIAL), 03010 Alicante, Spain; (M.P.V.); (A.S.-B.); (C.G.-R.); (J.C.R.)
| | - Vicente Boix
- Infectious Diseases Unit, Dr. Balmis University General Hospital, Alicante Institute for Health and Biomedical Research (ISABIAL), 03010 Alicante, Spain
| | - Esperanza Merino
- Infectious Diseases Unit, Dr. Balmis University General Hospital, Alicante Institute for Health and Biomedical Research (ISABIAL), 03010 Alicante, Spain
| | - Mario López-Pérez
- Evolutionary Genomics Group, División de Microbiología, Universidad Miguel Hernández, Apartado 18, 03550 San Juan de Alicante, Spain
| | - Juan Carlos Rodríguez
- Microbiology Department, Dr. Balmis University General Hospital, Alicante Institute for Health and Biomedical Research (ISABIAL), 03010 Alicante, Spain; (M.P.V.); (A.S.-B.); (C.G.-R.); (J.C.R.)
- Evolutionary Genomics Group, División de Microbiología, Universidad Miguel Hernández, Apartado 18, 03550 San Juan de Alicante, Spain
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de la Fuente-Nunez C, Cesaro A, Hancock REW. Antibiotic failure: Beyond antimicrobial resistance. Drug Resist Updat 2023; 71:101012. [PMID: 37924726 DOI: 10.1016/j.drup.2023.101012] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 10/13/2023] [Accepted: 10/16/2023] [Indexed: 11/06/2023]
Abstract
Despite significant progress in antibiotic discovery, millions of lives are lost annually to infections. Surprisingly, the failure of antimicrobial treatments to effectively eliminate pathogens frequently cannot be attributed to genetically-encoded antibiotic resistance. This review aims to shed light on the fundamental mechanisms contributing to clinical scenarios where antimicrobial therapies are ineffective (i.e., antibiotic failure), emphasizing critical factors impacting this under-recognized issue. Explored aspects include biofilm formation and sepsis, as well as the underlying microbiome. Therapeutic strategies beyond antibiotics, are examined to address the dimensions and resolution of antibiotic failure, actively contributing to this persistent but escalating crisis. We discuss the clinical relevance of antibiotic failure beyond resistance, limited availability of therapies, potential of new antibiotics to be ineffective, and the urgent need for novel anti-infectives or host-directed therapies directly addressing antibiotic failure. Particularly noteworthy is multidrug adaptive resistance in biofilms that represent 65 % of infections, due to the lack of approved therapies. Sepsis, responsible for 19.7 % of all deaths (as well as severe COVID-19 deaths), is a further manifestation of this issue, since antibiotics are the primary frontline therapy, and yet 23 % of patients succumb to this condition.
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Affiliation(s)
- Cesar de la Fuente-Nunez
- Machine Biology Group, Departments of Psychiatry and Microbiology, Institute for Biomedical Informatics, Institute for Translational Medicine and Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA; Departments of Bioengineering and Chemical and Biomolecular Engineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, PA, USA; Penn Institute for Computational Science, University of Pennsylvania, Philadelphia, PA, USA.
| | - Angela Cesaro
- Machine Biology Group, Departments of Psychiatry and Microbiology, Institute for Biomedical Informatics, Institute for Translational Medicine and Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA; Departments of Bioengineering and Chemical and Biomolecular Engineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, PA, USA; Penn Institute for Computational Science, University of Pennsylvania, Philadelphia, PA, USA
| | - Robert E W Hancock
- Centre for Microbial Diseases and Immunity Research, University of British Columbia, Vancouver, Canada.
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Zheng H, Zhong B, Wang Q, Li X, Chen J, Liu L, Liu T. ZnO-Doped Metal-Organic Frameworks Nanoparticles: Antibacterial Activity and Mechanisms. Int J Mol Sci 2023; 24:12238. [PMID: 37569611 PMCID: PMC10418459 DOI: 10.3390/ijms241512238] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 07/26/2023] [Accepted: 07/28/2023] [Indexed: 08/13/2023] Open
Abstract
Metal-Organic Frameworks (MOFs) offer new ideas for the design of antibacterial materials because of their antibacterial properties, high porosity and specific surface area, low toxicity and good biocompatibility compared with other nanomaterials. Herein, a novel antimicrobial nanomaterial, MIL-101(Fe)@ZnO, has been synthesized by hydrothermal synthesis and characterized by FTIR, UV-vis, ICP-OES, XRD, SEM, EDS and BET to show that the zinc ions are doped into the crystal lattice of MIL-101(Fe) to form a Fe-Zn bimetallic structure. MIL-101(Fe)@ZnO was found to be effective against a wide range of antibacterial materials including Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, Acinetobacter baumannii, Acinetobacter junii and Staphylococcus epidermidis. It has a significant antibacterial effect, weak cytotoxicity, high safety performance and good biocompatibility. Meanwhile, MIL-101(Fe)@ZnO was able to achieve antibacterial effects by causing cells to produce ROS, disrupting the cell membrane structure, and causing protein leakage and lipid preoxidation mechanisms. In conclusion, MIL-101(Fe)@ZnO is an easy-to-prepare antimicrobial nanomaterial with broad-spectrum bactericidal activity and low toxicity.
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Affiliation(s)
| | | | | | | | | | | | - Tiantian Liu
- School of Public Health, Guangdong Pharmaceutical University, Guangzhou 510310, China; (H.Z.); (B.Z.); (Q.W.); (X.L.); (J.C.); (L.L.)
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20
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Wu J, Huang Y, Ding X, Kang L, Wang X, Li D, Cheng W, Liu G, Xue J, Ding S. CPA-Cas12a-based lateral flow strip for portable assay of Methicillin-resistant Staphylococcus aureus in clinical sample. J Nanobiotechnology 2023; 21:234. [PMID: 37481551 PMCID: PMC10362775 DOI: 10.1186/s12951-023-02002-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Accepted: 07/13/2023] [Indexed: 07/24/2023] Open
Abstract
The rapid and accurate identification of methicillin-resistant Staphylococcus aureus at an early antibiotic therapy stage would be benefit to disease diagnosis and antibiotic selection. Herein, we integrated cross-priming amplification (CPA) and CRISPR/Cas 12a (designated as CPA-Cas 12a) systems to establish a sensitive and efficient lateral flow assay to detect methicillin-resistant Staphylococcus aureus. This assay relies on the CPA isothermal nucleic acid amplification strategy which can amplify the DNA extracted from Staphylococcus aureus and accompanying the indiscriminately trans-cleavage process of Cas 12a/CrRNA duplex after recognizing specific sequence. Taking the advantage of reporter and high turnover Cas 12a activity, a dramatic change in response was achieved to produce a significant increase in the analytical sensitivity. The signal conversion and output were realized using a lateral flow strip to achieve field-deployable detection. Furthermore, this bioassay was accommodated with a microfluidic device to realize automatically portable detection. This proposed assay completed within 30 min with the detection limit of 5 CFU mL-1, was verified by testing bacterial suspension and 202 clinical samples. Given the high sensitivity, specificity and efficiency, this colorimetric readout assay through strip could be further promoted to the clinical diagnosis, clinical medication of multidrug-resistant bacteria.
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Affiliation(s)
- Jiangling Wu
- Department of Clinical Laboratory, Medical Sciences Research Center, University-Town Hospital of Chongqing Medical University, Chongqing, 401331, China
| | - Yu Huang
- Chongqing Key Laboratory of Multi-scale Manufacturing Technology, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, China
- Chongqing School, University of Chinese Academy of Science, Chongqing, 400714, China
| | - Xiaojuan Ding
- Department of Clinical Laboratory, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, 401331, China
| | - Lina Kang
- Department of Clinical Laboratory, Medical Sciences Research Center, University-Town Hospital of Chongqing Medical University, Chongqing, 401331, China
| | - Xiaoliang Wang
- Department of Clinical Laboratory, Medical Sciences Research Center, University-Town Hospital of Chongqing Medical University, Chongqing, 401331, China
| | - Dandan Li
- Department of Clinical Laboratory, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, 401331, China
| | - Wei Cheng
- The Center for Clinical Molecular Medical Detection, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China.
| | - Gang Liu
- Department of Critical Care Medicine, University-Town Hospital of Chongqing Medical University, Chongqing, 401331, China.
| | - Jianjiang Xue
- Department of Clinical Laboratory, Medical Sciences Research Center, University-Town Hospital of Chongqing Medical University, Chongqing, 401331, China.
| | - Shijia Ding
- Key Laboratory of Clinical Laboratory Diagnostics (Ministry of Education), college of laboratory medicine, Chongqing Medical University, Chongqing, 400016, China
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21
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Cheesman MJ, Alcorn SR, White A, Cock IE. Hamamelis virginiana L. Leaf Extracts Inhibit the Growth of Antibiotic-Resistant Gram-Positive and Gram-Negative Bacteria. Antibiotics (Basel) 2023; 12:1195. [PMID: 37508291 PMCID: PMC10376399 DOI: 10.3390/antibiotics12071195] [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: 06/27/2023] [Revised: 07/10/2023] [Accepted: 07/13/2023] [Indexed: 07/30/2023] Open
Abstract
Virginian witch hazel (WH; Hamamelis virginiana L.; family: Hamamelidaceae) is a North American plant that is used traditionally to treat a variety of ailments, including bacterial infections. Solvents of varying polarity (water, methanol, ethyl acetate, hexane and chloroform) were used to prepare extracts from this plant. Resuspensions of each extract in an aqueous solution were tested for growth-inhibitory activity against a panel of bacteria (including three antibiotic-resistant strains) using agar disc diffusion and broth microdilution assays. The ethyl acetate, hexane and chloroform extracts were completely ineffective. However, the water and methanolic extracts were good inhibitors of E. coli, ESBL E. coli, S. aureus, MRSA, K. pneumoniae and ESBL K. pneumoniae growth, with the methanolic extract generally displaying substantially greater potency than the other extracts. Combining the active extracts with selected conventional antibiotics potentiated the bacterial growth inhibition of some combinations, whilst other combinations remained non-interactive. No synergistic or antagonistic interactions were observed for any WH extracts/antibiotic combinations. Gas chromatography-mass spectrometry analysis of the extracts identified three molecules of interest that may contribute to the activities observed, including phthalane and two 1,3-dioxolane compounds. Putative modes of action of the active WH extracts and these molecules of interest are discussed herein.
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Affiliation(s)
- Matthew J Cheesman
- School of Pharmacy and Medical Sciences, Gold Coast Campus, Griffith University, Gold Coast 4222, Australia
| | - Sean R Alcorn
- School of Pharmacy and Medical Sciences, Gold Coast Campus, Griffith University, Gold Coast 4222, Australia
| | - Alan White
- School of Environment and Science, Nathan Campus, Griffith University, Brisbane 4111, Australia
| | - Ian E Cock
- School of Environment and Science, Nathan Campus, Griffith University, Brisbane 4111, Australia
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22
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Wang Z, Fu L, Liu D, Tang D, Liu K, Rao L, Yang J, Liu Y, Li Y, Chen H, Yang X. Controllable Preparation and Research Progress of Photosensitive Antibacterial Complex Hydrogels. Gels 2023; 9:571. [PMID: 37504450 PMCID: PMC10379193 DOI: 10.3390/gels9070571] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 07/02/2023] [Accepted: 07/10/2023] [Indexed: 07/29/2023] Open
Abstract
Hydrogels are materials consisting of a network of hydrophilic polymers. Due to their good biocompatibility and hydrophilicity, they are widely used in biomedicine, food safety, environmental protection, agriculture, and other fields. This paper summarizes the typical complex materials of photocatalysts, photosensitizers, and hydrogels, as week as their antibacterial activities and the basic mechanisms of photothermal and photodynamic effects. In addition, the application of hydrogel-based photoresponsive materials in microbial inactivation is discussed, including the challenges faced in their application. The advantages of photosensitive antibacterial complex hydrogels are highlighted, and their application and research progress in various fields are introduced in detail.
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Affiliation(s)
- Zhijun Wang
- Hubei Key Laboratory of Radiation Chemistry and Functional Materials, School of Nuclear Technology and Chemistry and Biology, Hubei University of Science and Technology, Xianning 437100, China
| | - Lili Fu
- Hubei Key Laboratory of Radiation Chemistry and Functional Materials, School of Nuclear Technology and Chemistry and Biology, Hubei University of Science and Technology, Xianning 437100, China
| | - Dongliang Liu
- Hubei Key Laboratory of Radiation Chemistry and Functional Materials, School of Nuclear Technology and Chemistry and Biology, Hubei University of Science and Technology, Xianning 437100, China
| | - Dongxu Tang
- Hubei Key Laboratory of Radiation Chemistry and Functional Materials, School of Nuclear Technology and Chemistry and Biology, Hubei University of Science and Technology, Xianning 437100, China
| | - Kun Liu
- Hubei Key Laboratory of Radiation Chemistry and Functional Materials, School of Nuclear Technology and Chemistry and Biology, Hubei University of Science and Technology, Xianning 437100, China
| | - Lu Rao
- Hubei Key Laboratory of Radiation Chemistry and Functional Materials, School of Nuclear Technology and Chemistry and Biology, Hubei University of Science and Technology, Xianning 437100, China
| | - Jinyu Yang
- Hubei Key Laboratory of Radiation Chemistry and Functional Materials, School of Nuclear Technology and Chemistry and Biology, Hubei University of Science and Technology, Xianning 437100, China
- Key Laboratory of Coal Conversion and New Carbon Materials of Hubei Province, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, China
| | - Yi Liu
- College of Chemistry and Chemical Engineering, Tiangong University, Tianjin 300387, China
| | - Yuesheng Li
- Hubei Key Laboratory of Radiation Chemistry and Functional Materials, School of Nuclear Technology and Chemistry and Biology, Hubei University of Science and Technology, Xianning 437100, China
| | - Huangqin Chen
- Hubei Key Laboratory of Radiation Chemistry and Functional Materials, School of Nuclear Technology and Chemistry and Biology, Hubei University of Science and Technology, Xianning 437100, China
| | - Xiaojie Yang
- Hubei Key Laboratory of Radiation Chemistry and Functional Materials, School of Nuclear Technology and Chemistry and Biology, Hubei University of Science and Technology, Xianning 437100, China
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23
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Liu P, Zhang Y, Zhang Z, Huang X, Su X, Yang S, Xie Y. Antibiotic-Induced Dysbiosis of the Gut Microbiota Impairs Gene Expression in Gut-Liver Axis of Mice. Genes (Basel) 2023; 14:1423. [PMID: 37510327 PMCID: PMC10379678 DOI: 10.3390/genes14071423] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 07/05/2023] [Accepted: 07/05/2023] [Indexed: 07/30/2023] Open
Abstract
Antibiotics can be a double-edged sword. The application of broad-spectrum antibiotics leads to the suppression of microorganisms in the human body without selective targeting, including numerous non-pathogenic microorganisms within the gut. As a result, dysbiosis of the gut microbiota can occur. The gut microbiota is a vast and intricate ecosystem that has been connected with various illnesses. Significantly, the gut and liver function in a closely coupled anatomical and physiological relationship referred to as the "gut-liver axis". Consequently, metabolites stemming from the gut microbiota migrate via the portal vein to the liver, thereby influencing gene expression and proper physiological activity within the liver. This study aimed to investigate the dysbiosis of gut microbiota ecology and the disruption of gene expression resulting from oral antibiotics and their subsequent recovery. In the experiment, mice were tube-fed neomycin (0.5 mg/mL) and ampicillin (1 mg/mL) for 21 days (ABX group) to conduct 16s rRNA sequencing. By simultaneously analyzing public datasets PRJDB6615, which utilized the same antibiotics, it was found that nearly 50% of the total microbiota abundance was attributed to the f__Lactobacillaceae family. Additionally, datasets GSE154465 and GSE159761, using the same antibiotics, were used to screen for differentially expressed genes pre-and post-antibiotic treatment. Quantitative real-time PCR was employed to evaluate gene expression levels before and after antibiotic treatment. It was discovered that oral antibiotics significantly disrupted gene expression in the gut and liver, likely due to the dysregulation of the gut microbiota ecology. Fecal microbiota transplantation (FMT) was found to be an effective method for restoring gut microbiota dysbiosis. To further enhance the restoration of gut microbiota and gene expression, an antioxidant, vitamin C, was added to the FMT process to counteract the oxidative effect of antibiotics on microorganisms. The results showed that FMTs with vitamin C were more effective in restoring gut microbiota and gene expression to the level of the fecal transplant donor.
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Affiliation(s)
- Pu Liu
- Chongqing Key Laboratory of Big Data for Bio Intelligence, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
| | - Yv Zhang
- Chongqing Key Laboratory of Big Data for Bio Intelligence, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
| | - Zhongyuan Zhang
- Chongqing Key Laboratory of Big Data for Bio Intelligence, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
| | - Xiaorong Huang
- Chongqing Key Laboratory of Big Data for Bio Intelligence, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
| | - Xiaojie Su
- Chongqing Key Laboratory of Big Data for Bio Intelligence, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
| | - Shilong Yang
- Chongqing Key Laboratory of Big Data for Bio Intelligence, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
| | - Yongfang Xie
- Chongqing Key Laboratory of Big Data for Bio Intelligence, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
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24
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Zhu Y, Jiang X, Shen D, Mao J, Cao Y, Zhang K, Peng J, Dong F, Wang N, He K. A one-step solid-phase extraction with UHPLC-MS/MS for fast and accurate determination of multi-class veterinary drugs in animal muscles. Food Chem 2023; 428:136712. [PMID: 37441938 DOI: 10.1016/j.foodchem.2023.136712] [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: 02/02/2023] [Revised: 06/21/2023] [Accepted: 06/21/2023] [Indexed: 07/15/2023]
Abstract
Excessive use of veterinary drugs in livestock growth poses a threat to food safety. It is, however, challenging to quantify these multi-class veterinary drugs within animal muscles, because of their varied physicochemical properties. In this work, we presented a simple, efficient and sensitive method for the simultaneous determination of multi-class veterinary drugs with ultra-high-performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS). The method involves a highly efficient extraction using a EDTA (pH 7)-ACN (30:70, v/v) solvent system, followed by a one-step solid-phase extraction cleanup approach with PRiME HLB sorbent (Reversed-phase N-vinylpyrrolidone and divinylbenzene copolymer). For all the analytes, over a wide range of polarity, satisfactory recoveries were obtained between 70% and 120%, with relative standard deviations <15%. Excellent sensitivities were achieved with the limits of quantification ranging from 0.2 μg/kg to 3.0 μg/kg. This developed method provides a new targeted strategy for the analysis of multi-class veterinary drugs in muscle matrices.
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Affiliation(s)
- Yingjie Zhu
- National Center of Biomedical Analysis, Beijing 100850, China
| | - Xin Jiang
- National Center of Biomedical Analysis, Beijing 100850, China
| | - Danning Shen
- National Center of Biomedical Analysis, Beijing 100850, China
| | - Jie Mao
- National Center of Biomedical Analysis, Beijing 100850, China
| | - Yanqing Cao
- National Center of Biomedical Analysis, Beijing 100850, China
| | - Kang Zhang
- National Center of Biomedical Analysis, Beijing 100850, China
| | - Jing Peng
- National Center of Biomedical Analysis, Beijing 100850, China
| | - Fangting Dong
- National Center of Biomedical Analysis, Beijing 100850, China
| | - Na Wang
- National Center of Biomedical Analysis, Beijing 100850, China.
| | - Kun He
- National Center of Biomedical Analysis, Beijing 100850, China.
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25
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Krokhicheva PA, Goldberg MA, Fomin AS, Khayrutdinova DR, Antonova OS, Baikin AS, Leonov AV, Merzlyak EM, Mikheev IV, Kirsanova VA, Sviridova IK, Akhmedova SA, Sergeeva NS, Barinov SM, Komlev VS. Zn-Doped Calcium Magnesium Phosphate Bone Cement Based on Struvite and Its Antibacterial Properties. Materials (Basel) 2023; 16:4824. [PMID: 37445137 DOI: 10.3390/ma16134824] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 06/24/2023] [Accepted: 06/28/2023] [Indexed: 07/15/2023]
Abstract
The development of magnesium calcium phosphate bone cements (MCPCs) has garnered substantial attention. MCPCs are bioactive and biodegradable and have appropriate mechanical and antimicrobial properties for use in reconstructive surgery. In this study, the cement powders based on a (Ca + Mg)/P = 2 system doped with Zn2+ at 0.5 and 1.0 wt.% were obtained and investigated. After mixing with a cement liquid, the structural and phase composition, morphology, chemical structure, setting time, compressive strength, degradation behavior, solubility, antibacterial activities, and in vitro behavior of the cement materials were examined. A high compressive strength of 48 ± 5 MPa (mean ± SD) was achieved for the cement made from Zn2+ 1.0 wt.%-substituted powders. Zn2+ introduction led to antibacterial activity against Staphylococcus aureus and Escherichia coli strains, with an inhibition zone diameter of up to 8 mm. Biological assays confirmed that the developed cement is cytocompatible and promising as a potential bone substitute in reconstructive surgery.
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Affiliation(s)
- Polina A Krokhicheva
- A.A. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Moscow 119334, Russia
| | - Margarita A Goldberg
- A.A. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Moscow 119334, Russia
| | - Alexander S Fomin
- A.A. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Moscow 119334, Russia
| | - Dinara R Khayrutdinova
- A.A. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Moscow 119334, Russia
| | - Olga S Antonova
- A.A. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Moscow 119334, Russia
| | - Alexander S Baikin
- A.A. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Moscow 119334, Russia
| | - Aleksander V Leonov
- Department of Chemistry, M.V. Lomonosov Moscow State University, Moscow 119991, Russia
| | - Ekaterina M Merzlyak
- Department of Molecular Technologies, Pirogov Russian National Research Medical University, Moscow 117997, Russia
| | - Ivan V Mikheev
- Department of Chemistry, M.V. Lomonosov Moscow State University, Moscow 119991, Russia
| | - Valentina A Kirsanova
- P.A. Hertsen Moscow Oncology Research Institute-Branch of National Medical Research Radiological Centre Affiliated with Ministry of Health of Russian Federation, 2nd Botkinsky Pr. 3, Moscow 125284, Russia
| | - Irina K Sviridova
- P.A. Hertsen Moscow Oncology Research Institute-Branch of National Medical Research Radiological Centre Affiliated with Ministry of Health of Russian Federation, 2nd Botkinsky Pr. 3, Moscow 125284, Russia
| | - Suraya A Akhmedova
- P.A. Hertsen Moscow Oncology Research Institute-Branch of National Medical Research Radiological Centre Affiliated with Ministry of Health of Russian Federation, 2nd Botkinsky Pr. 3, Moscow 125284, Russia
| | - Natalia S Sergeeva
- P.A. Hertsen Moscow Oncology Research Institute-Branch of National Medical Research Radiological Centre Affiliated with Ministry of Health of Russian Federation, 2nd Botkinsky Pr. 3, Moscow 125284, Russia
| | - Sergey M Barinov
- A.A. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Moscow 119334, Russia
| | - Vladimir S Komlev
- A.A. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Moscow 119334, Russia
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26
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Candellone A, Badino P, Girolami F, Ala U, Mina F, Odore R. Dog Owners’ Attitude toward Veterinary Antibiotic Use and Antibiotic Resistance with a Focus on Canine Diarrhea Management. Animals (Basel) 2023; 13:ani13061061. [PMID: 36978602 PMCID: PMC10044205 DOI: 10.3390/ani13061061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 03/11/2023] [Accepted: 03/14/2023] [Indexed: 03/17/2023] Open
Abstract
An ad hoc questionnaire was designed in order to investigate AMR knowledge amongst Italian dog owners, owner expectations concerning pharmacological treatment of canine AD, and client attitudes towards and compliance with alternative strategies to antimicrobial administration. A total of 250 questionnaires were returned. Most of respondents were female, aged 36–70 and workers. More than a half of participants owned one dog with mixed breed, with Labrador retriever, golden retriever, dachshund, and border collie being the most represented breeds. On average, each dog was treated with an oral antibiotic 1.044 times per year. Intestinal diseases were among the main reasons (19%) for antibiotic prescription. Oral antibiotic courses without veterinary consultation (21%) and anticipated termination of the therapy (17.1%) were less common than reported elsewhere. The majority of respondents knew the meaning of AMR with a significant inverse association between the level of education and the tendency to administer antimicrobials without consulting a clinician (p = 0.004). Most of the owners expected a rapid recovery of clinical signs after a first episode of AD and accepted natural dietary supplementation for treating the condition. Ninety-five percent of the respondents believed that public funding should be spent to study AMR. Even though an acceptable degree of AMR awareness emerged, we feel that further efforts should be made to increase public AMR knowledge and to stimulate proactive measures to fight the phenomenon. On the other hand, the development of guidelines for the treatment of uncomplicated canine AD would help clinicians to rationalize antimicrobial use.
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Affiliation(s)
- Alessia Candellone
- Department of Veterinary Sciences, University of Turin, 10095 Grugliasco, Italy
- Nutrito Vet srl, Rosta, 10090 Turin, Italy
- Correspondence:
| | - Paola Badino
- Department of Veterinary Sciences, University of Turin, 10095 Grugliasco, Italy
| | - Flavia Girolami
- Department of Veterinary Sciences, University of Turin, 10095 Grugliasco, Italy
| | - Ugo Ala
- Department of Veterinary Sciences, University of Turin, 10095 Grugliasco, Italy
| | | | - Rosangela Odore
- Department of Veterinary Sciences, University of Turin, 10095 Grugliasco, Italy
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Gitte M, Sudhakar Gomte S, Girish Agnihotri T, Singh N, Jain A. Development Of Amoxicillin Trihydrate-Loaded Lyotropic Liquid Crystal Nanoparticles For Skin Infection. J Mol Liq 2023. [DOI: 10.1016/j.molliq.2023.121281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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28
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Huang X, Zhang Y, Huang J, Gao W, Yongfang X, Zeng C, Gao C. The effect of FMT and vitamin C on immunity-related genes in antibiotic-induced dysbiosis in mice. PeerJ 2023; 11:e15356. [PMID: 37193034 PMCID: PMC10183171 DOI: 10.7717/peerj.15356] [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: 10/11/2022] [Accepted: 04/14/2023] [Indexed: 05/18/2023] Open
Abstract
Antibiotics are double-edged swords. Although antibiotics are used to inhibit pathogenic bacteria, they also run the risk of destroying some of the healthy bacteria in our bodies. We examined the effect of penicillin on the organism through a microarray dataset, after which 12 genes related to immuno-inflammatory pathways were selected by reading the literature and validated using neomycin and ampicillin. The expression of genes was measured using qRT-PCR. Several genes were significantly overexpressed in antibiotic-treated mice, including CD74 and SAA2 in intestinal tissues that remained extremely expressed after natural recovery. Moreover, transplantation of fecal microbiota from healthy mice to antibiotic-treated mice was made, where GZMB, CD3G, H2-AA, PSMB9, CD74, and SAA1 were greatly expressed; however, SAA2 was downregulated and normal expression was restored, and in liver tissue, SAA1, SAA2, SAA3 were extremely expressed. After the addition of vitamin C, which has positive effects in several aspects, to the fecal microbiota transplantation, in the intestinal tissues, the genes that were highly expressed after the fecal microbiota transplantation effectively reduced their expression, and the unaffected genes remained normally expressed, but the CD74 gene remained highly expressed. In liver tissues, normally expressed genes were not affected, but the expression of SAA1 was reduced and the expression of SAA3 was increased. In other words, fecal microbiota transplantation did not necessarily bring about a positive effect of gene expression restoration, but the addition of vitamin C effectively reduced the effects of fecal microbiota transplantation and regulated the balance of the immune system.
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Affiliation(s)
- Xiaorong Huang
- Chongqing Key Laboratory of Big Data for Bio Intelligence, Chongqing University of Posts and Tele-communications, Chongqing, China
| | - Yv Zhang
- Chongqing Key Laboratory of Big Data for Bio Intelligence, Chongqing University of Posts and Tele-communications, Chongqing, China
| | - Junsong Huang
- Chongqing Key Laboratory of Big Data for Bio Intelligence, Chongqing University of Posts and Tele-communications, Chongqing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Wenli Gao
- Chongqing University of Posts and Telecommunications, Chongqing Key Laboratory of Big Data for Bio Intelligence, Chongqing, China
| | - Xie Yongfang
- Chongqing Key Laboratory of Big Data for Bio Intelligence, Chongqing University of Posts and Tele-communications, Chongqing, China
| | - Chuisheng Zeng
- Chongqing Key Laboratory of Big Data for Bio Intelligence, Chongqing University of Posts and Tele-communications, Chongqing, China
| | - Chao Gao
- Chongqing Key Laboratory of Big Data for Bio Intelligence, Chongqing University of Posts and Tele-communications, Chongqing, China
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29
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Mardikasari SA, Sipos B, Csóka I, Katona G. Nasal route for antibiotics delivery: Advances, challenges and future opportunities applying the quality by design concepts. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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30
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Xu J, Ma S, Zhang W, Jia L, Zheng H, Bo P, Bai X, Sun H, Qi L, Zhang T, Chen C, Li F, Arai F, Tian J, Feng L. In vitro magnetosome remineralization for silver-magnetite hybrid magnetosome biosynthesis and used for healing of the infected wound. J Nanobiotechnology 2022; 20:364. [PMID: 35933359 PMCID: PMC9356440 DOI: 10.1186/s12951-022-01532-4] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Accepted: 06/23/2022] [Indexed: 11/18/2022] Open
Abstract
Background Magnetosomes (BMPs) are organelles of magnetotactic bacteria (MTB) that are responsible for mineralizing iron to form magnetite. In addition, BMP is an ideal biomaterial that is widely used in bio- and nano-technological applications, such as drug delivery, tumor detection and therapy, and immunodetection. The use of BMPs to create multifunctional nanocomposites would further expand the range of their applications. Results In this study, we firstly demonstrate that the extracted BMP can remineralize in vitro when it is exposed to AgNO3 solution, the silver ions (Ag+) were transported into the BMP biomembrane (MM) and mineralized into a silver crystal on one crystal plane of Fe3O4. Resulting in the rapid synthesis of an Ag-Fe3O4 hybrid BMP (BMP-Ag). The synergy between the biomembrane, Fe3O4 crystal, and unmineralized iron enabled the remineralization of BMPs at an Ag+ concentration ≥ 1.0 mg mL−1. The BMP-Ag displayed good biocompatibility and antibacterial activity. At a concentration of 2.0 mg/mL, the BMP-Ag and biomembrane removed Ag-Fe3O4 NPs inhibited the growth of gram-negative and gram-positive bacteria. Thus using BMP-Ag as a wound dressing can effectively enhance the contraction of infected wounds. Conclusions This study represents the first successful attempt to remineralize organelles ex vivo, realizing the biosynthesis of hybrid BMP and providing an important advancement in the synthesis technology of multifunctional biological nanocomposites. Graphical abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1186/s12951-022-01532-4.
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Affiliation(s)
- Junjie Xu
- School of Mechanical Engineering and Automation, Beihang University, Beijing, 100083, China.,State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Shijiao Ma
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Wei Zhang
- School of Mechanical Engineering and Automation, Beihang University, Beijing, 100083, China
| | - Lina Jia
- School of Mechanical Engineering and Automation, Beihang University, Beijing, 100083, China
| | - Haolan Zheng
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Pang Bo
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Xue Bai
- School of Mechanical Engineering and Automation, Beihang University, Beijing, 100083, China
| | - Hongyan Sun
- School of Mechanical Engineering and Automation, Beihang University, Beijing, 100083, China
| | - Lei Qi
- State Key Laboratory of Ophthalmology, School of Biomedical Engineering, Wenzhou Medical University, 270 Xueyuanxi Road, Wenzhou, 325027, China
| | - Tongwei Zhang
- Key Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, 100029, China
| | - Chuanfang Chen
- Beijing Key Laboratory of Bioelectromagnetism, Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing, 100190, People's Republic of China
| | - Feng Li
- College of Life Science, Huaibei Normal University, Huaibei, 235000, China
| | - Fumihito Arai
- Department of Mechanical Engineering, The University of Tokyo, Tokyo, 113-8656, Japan
| | - Jiesheng Tian
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, 100193, China.
| | - Lin Feng
- School of Mechanical Engineering and Automation, Beihang University, Beijing, 100083, China.
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31
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Guo S, He Y, Zhu Y, Tang Y, Yu B. Combatting Antibiotic Resistance Using Supramolecular Assemblies. Pharmaceuticals (Basel) 2022; 15:ph15070804. [PMID: 35890105 PMCID: PMC9322166 DOI: 10.3390/ph15070804] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 06/18/2022] [Accepted: 06/22/2022] [Indexed: 02/01/2023] Open
Abstract
Antibiotic resistance has posed a great threat to human health. The emergence of antibiotic resistance has always outpaced the development of new antibiotics, and the investment in the development of new antibiotics is diminishing. Supramolecular self-assembly of the conventional antibacterial agents has been proved to be a promising and versatile strategy to tackle the serious problem of antibiotic resistance. In this review, the recent development of antibacterial agents based on supramolecular self-assembly strategies will be introduced.
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Affiliation(s)
- Shuwen Guo
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710100, China;
- Correspondence: (S.G.); (Y.T.); (B.Y.)
| | - Yuling He
- Institute of Basic and Translational Medicine, Xi’an Medical University, No. 1 Xinwang Road, Xi’an 710021, China;
| | - Yuanyuan Zhu
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710100, China;
| | - Yanli Tang
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710100, China;
- Correspondence: (S.G.); (Y.T.); (B.Y.)
| | - Bingran Yu
- State Key Laboratory of Chemical Resource Engineering, Key Lab of Biomedical Materials of Natural Macromolecules (Beijing University of Chemical Technology, Ministry of Education), Beijing 100029, China
- Correspondence: (S.G.); (Y.T.); (B.Y.)
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Bergamonti L, Graiff C, Bergonzi C, Potenza M, Reverberi C, Ossiprandi MC, Lottici PP, Bettini R, Elviri L. Photodegradation of Pharmaceutical Pollutants: New Photocatalytic Systems Based on 3D Printed Scaffold-Supported Ag/TiO2 Nanocomposite. Catalysts 2022; 12:580. [DOI: 10.3390/catal12060580] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Due to the release of active pharmaceutical compounds in wastewater and their persistence in the environment, dangerous consequences can develop in the aquatic and terrestrial organisms. Chitosan/Ag/TiO2 3D printed scaffolds, at different Ag nanoparticle concentrations (10, 100, 1000 ppm) are investigated here as promising materials for photocatalytic degradation under the UV–Vis irradiation of pharmaceutical compounds in wastewater. As target drugs, amoxicillin, paracetamol and their 1:1 mix were selected. Ag nanoparticles increase the photocatalytic efficiency of the system based on titanium dioxide embedded in the chitosan scaffold: in the presence of Chitosan/Ag100/TiO2, the selected pharmaceuticals (PhCs), monitored by UV–Vis spectroscopy, are completely removed in about 2 h. The photodegradation products of the PhCs were identified by Liquid Chromatography–Mass Spectroscopy and assessed for their toxicological impact on six different bacterial strains: no antibacterial activity was found towards the tested strains. This new system based on Ag/TiO2 supported on 3D chitosan scaffolds may represent an effective strategy to reduce wastewater pollution by emerging contaminants.
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Gude SS, Venu Gopal S, Marasandra Ramesh H, Vuppalapati S, Peddi NC, Gude SS. Unraveling the Nature of Antibiotics: Is It a Cure or a New Hurdle to the Patient Treatment? Cureus 2022; 14:e23955. [PMID: 35547462 PMCID: PMC9085652 DOI: 10.7759/cureus.23955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/08/2022] [Indexed: 11/24/2022] Open
Abstract
Antimicrobial resistance is an increasing problem worldwide that has been exacerbated by antibiotic misuse worldwide. Growing antibiotic resistance can be attributed to as well as leads to severe infections, complications, prolonged hospital admissions, and higher mortality. One of the most important goals of administering antimicrobials is to avoid establishing antibiotic resistance during therapy. This can be done by drastically lowering worldwide antimicrobial usage, both in present and future. While current management methods to legislate antimicrobials and educate the healthcare community on the challenges are beneficial, they do not solve the problem of attaining an overall reduction in antimicrobial usage in humans. Application of rapid microbiological diagnostics for identification and antimicrobial susceptibility testing, use of inflammation markers to guide initiation and duration of therapies, reduction of standard antibiotic course durations, individualization of antibiotic treatments, and dosing considering pharmacokinetics are all possible strategies to optimize antibiotic use in everyday clinical practice and reduce the risk of inducing bacterial resistance. Furthermore, to remove any impediments to proper prescribing, strategies to improve antibiotic prescribing and antibiotic stewardship programs should enable clinical reasoning and enhance the prescribing environment. In addition, the well-established association between antimicrobial usage and resistance should motivate efforts to develop antimicrobial treatment regimens that facilitate the evolution of resistance. This review discusses the role of antibiotics, their current application in human medicine, and how the resistance has evolved to the existing antibiotics based on the existing literature.
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Zhong DX, She MT, Guo XC, Zheng BX, Huang XH, Zhang YH, Ser HL, Wong WL, Sun N, Lu YJ. Design and synthesis of quinolinium-based derivatives targeting FtsZ for antibacterial evaluation and mechanistic study. Eur J Med Chem 2022; 236:114360. [PMID: 35421657 DOI: 10.1016/j.ejmech.2022.114360] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 04/03/2022] [Accepted: 04/04/2022] [Indexed: 01/03/2023]
Abstract
The discovery of small molecular inhibitors targeting essential and conserved bacterial drug targets such as FtsZ protein is a promising approach to fight against multi-drug resistant bacteria. In the present study, two new series of FtsZ inhibitors based on a 1-methylquinolinium scaffold were synthesized. The inhibitors possess a variety of substituent groups including the cyclic or linear amine skeleton at the 2- and 4-position of the quinolinium ring for structure-activity relationship study. In general, the inhibitors bearing a cyclic amine substituent at the 4-position of the quinolinium ring showed better antibacterial activity (MIC down to 0.25 μg/mL) than that at the 2-position, especially against Gram-positive bacteria. Among the twenty FtsZ inhibitors examined in various assays, A3 was identified to exhibit excellent antibacterial activity against S. aureus (MIC = 0.5-1 μg/mL), S. epidermidis (MIC = 0.25 μg/mL) and E. faecium (MIC = 1-8 μg/mL). More importantly, A3 showed low hemolytic toxicity (IC5 = 64 μg/mL) and was found not readily to induce drug resistance. A3 at 2-8 μg/mL promoted the polymerization of FtsZ and interrupted the bacterial division. Furthermore, the ligand-FtsZ interaction study conducted with circular dichroism and molecular docking revealed that A3 induced secondary structure changes of FtsZ protein upon binding to the interdomain cleft of the protein. A3 is thus a potent inhibitor of FtsZ and shows potential to be used as a new antibacterial agent against drug-resistant bacteria.
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Affiliation(s)
- Dong-Xiao Zhong
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, 510006, PR China
| | - Meng-Ting She
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, 510006, PR China
| | - Xiao-Chun Guo
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, 510006, PR China
| | - Bo-Xin Zheng
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, 510006, PR China
| | - Xuan-He Huang
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, 510006, PR China
| | - Yi-Han Zhang
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, 510006, PR China
| | - Hooi-Leng Ser
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, 510006, PR China
| | - Wing-Leung Wong
- The State Key Laboratory of Chemical Biology and Drug Discovery, Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China.
| | - Ning Sun
- The State Key Laboratory of Chemical Biology and Drug Discovery, Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China; Guangzhou First People's Hospital, School of Medicine, South China University of Technology, Guangzhou, 510180, PR China.
| | - Yu-Jing Lu
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, 510006, PR China; Engineering Research Academy of High Value Utilization of Green Plants, Meizhou, 514021, PR China; Golden Health (Guangdong) Biotechnology Co., Ltd, Foshan, 28225, PR China.
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35
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Guo N, Xia Y, Zeng W, Chen J, Wu Q, Shi Y, Li G, Huang Z, Wang G, Liu Y. Alginate-based aerogels as wound dressings for efficient bacterial capture and enhanced antibacterial photodynamic therapy. Drug Deliv 2022; 29:1086-1099. [PMID: 35373683 PMCID: PMC9048949 DOI: 10.1080/10717544.2022.2058650] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
The development of novel wound dressings, such as aerogels, with rapid hemostasis and bactericidal capacities for pre-hospital care is necessary. To prevent the occurrence of bacterial resistance, antibacterial photodynamic therapy (aPDT) with broad-spectrum antibacterial ability and negligible bacterial resistance has been intensively studied. However, photosensitizers often suffer from poor water solubility, short singlet oxygen (1O2) half-life and restricted 1O2 diffusion distance. Herein, sodium alginate was covalently modified by photosensitizers and phenylboronic acid, and cross-linked by Ca(II) ions to generate SA@TPAPP@PBA aerogel after lyophilization as an antibacterial photodynamic wound dressing. Afterwards, its photodynamic and bacterial capture activities were intensively evaluated. Furthermore, its hemostasis and bactericidal efficiency against Staphylococcus aureus were assessed via in vitro and in vivo assays. First, chemical immobilization of photosensitizers led to an enhancement of its solubility. Moreover, it showed an excellent hemostasis capacity. Due to the formation of reversible covalent bonds between phenylboronic acid and diol groups on bacterial cell surface, the aerogel could capture S. aureus tightly and dramatically enhance aPDT. To sum up, the prepared aerogel illustrated excellent hemostasis capacity and antibacterial ability against S. aureus. Therefore, they have great potential to be utilized as wound dressing in clinical trials.
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Affiliation(s)
- Ning Guo
- Guangdong Key Laboratory for Research and Development of Natural Drugs, School of Pharmacy, Guangdong Medical University, Zhanjiang, China
| | - Yu Xia
- Guangdong Key Laboratory for Research and Development of Natural Drugs, School of Pharmacy, Guangdong Medical University, Zhanjiang, China
| | - Weishen Zeng
- Guangdong Key Laboratory for Research and Development of Natural Drugs, School of Pharmacy, Guangdong Medical University, Zhanjiang, China
| | - Jia Chen
- Guangdong Key Laboratory for Research and Development of Natural Drugs, School of Pharmacy, Guangdong Medical University, Zhanjiang, China
| | - Quanxin Wu
- Guangdong Key Laboratory for Research and Development of Natural Drugs, School of Pharmacy, Guangdong Medical University, Zhanjiang, China
| | - Yaxin Shi
- Guangdong Key Laboratory for Research and Development of Natural Drugs, School of Pharmacy, Guangdong Medical University, Zhanjiang, China
| | - Guoying Li
- Guangdong Key Laboratory for Research and Development of Natural Drugs, School of Pharmacy, Guangdong Medical University, Zhanjiang, China
| | - Zhuoyi Huang
- Guangdong Key Laboratory for Research and Development of Natural Drugs, School of Pharmacy, Guangdong Medical University, Zhanjiang, China
| | - Guanhai Wang
- Guangdong Key Laboratory for Research and Development of Natural Drugs, School of Pharmacy, Guangdong Medical University, Zhanjiang, China
| | - Yun Liu
- Guangdong Key Laboratory for Research and Development of Natural Drugs, School of Pharmacy, Guangdong Medical University, Zhanjiang, China.,The Marine Biomedical Research Institute of Guangdong, Zhanjiang, China
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