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Soyhan I, Polat T, Mozioglu E, Ozal Ildenız TA, Acikel Elmas M, Cebeci S, Unubol N, Gok O. Effective Immobilization of Novel Antimicrobial Peptides via Conjugation onto Activated Silicon Catheter Surfaces. Pharmaceutics 2024; 16:1045. [PMID: 39204390 PMCID: PMC11360073 DOI: 10.3390/pharmaceutics16081045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2024] [Revised: 07/30/2024] [Accepted: 07/31/2024] [Indexed: 09/04/2024] Open
Abstract
Antibiotic-resistant microorganisms have become a serious threat to public health, resulting in hospital infections, the majority of which are caused by commonly used urinary tract catheters. Strategies for preventing bacterial adhesion to the catheters' surfaces have been potentially shown as effective methods, such as coating thesurface with antimicrobial biomolecules. Here, novel antimicrobial peptides (AMPs) were designed as potential biomolecules to prevent antibiotic-resistant bacteria from binding to catheter surfaces. Thiolated AMPs were synthesized using solid-phase peptide synthesis (SPPS), and prep-HPLC was used to obtain AMPs with purity greater than 90%. On the other side, the silicone catheter surface was activated by UV/ozone treatment, followed by functionalization with allyl moieties for conjugation to the free thiol group of cystein in AMPs using thiol-ene click chemistry. Peptide-immobilized surfaces were found to become more resistant to bacterial adhesion while remaining biocompatible with mammalian cells. The presence and site of conjugation of peptide molecules were investigated by immobilizing them to catheter surfaces from both ends (C-Pep and Pep-C). It was clearly demonstrated that AMPs conjugated to the surface via theirN terminus have a higher antimicrobial activity. This strategy stands out for its effective conjugation of AMPs to silicone-based implant surfaces for the elimination of bacterial infections.
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Affiliation(s)
- Irem Soyhan
- Department of Medical Biotechnology, Acibadem Mehmet Ali Aydinlar University, Atasehir, 34752 Istanbul, Turkey
| | - Tuba Polat
- Department of Medical Microbiology, Acibadem Mehmet Ali Aydinlar University, Atasehir, 34752 Istanbul, Turkey
| | - Erkan Mozioglu
- Department of Medical Biotechnology, Acibadem Mehmet Ali Aydinlar University, Atasehir, 34752 Istanbul, Turkey
| | - Tugba Arzu Ozal Ildenız
- Department of Biomedical Engineering, Acibadem Mehmet Ali Aydinlar University, Atasehir, 34752 Istanbul, Turkey
| | - Merve Acikel Elmas
- Department of Histology and Embriology, School of Medicine, Acibadem Mehmet Ali Aydinlar University, Atasehir, 34752 Istanbul, Turkey
| | - Sinan Cebeci
- Department of Medical Biotechnology, Acibadem Mehmet Ali Aydinlar University, Atasehir, 34752 Istanbul, Turkey
| | - Nihan Unubol
- Department of Medical Microbiology, Acibadem Mehmet Ali Aydinlar University, Atasehir, 34752 Istanbul, Turkey
- Medical Laboratory Technician Program, Vocational School of Health Services, Acıbadem Mehmet Ali Aydınlar University, Atasehir, 34752 Istanbul, Turkey
| | - Ozgul Gok
- Department of Biomedical Engineering, Acibadem Mehmet Ali Aydinlar University, Atasehir, 34752 Istanbul, Turkey
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Yuqing F, Zhang S, Peng R, Silva J, Ernst O, Lapizco-Encinas BH, Liu R, Du K. Durable Antimicrobial Microstructure Surface (DAMS) Enabled by 3D-Printing and ZnO Nanoflowers. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.06.11.598554. [PMID: 38915492 PMCID: PMC11195153 DOI: 10.1101/2024.06.11.598554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/26/2024]
Abstract
A. Numerous studies have been trying to create nanomaterials based antimicrobial surfaces to combat the growing bacterial infection problems. Mechanical durability has become one of the major challenges to applying those surfaces in real life. In this study, we demonstrate the Durable Antimicrobial Microstructures Surface (DAMS) consisting of DLP 3D printed microstructures and zinc oxide (ZnO) nanoflowers. The microstructures serve as a protection armor for the nanoflowers during abrasion. The antimicrobial ability was tested by immersing in 2E8 CFU/mL Escherichia coli ( E. coli ) suspension and then evaluated using electron microscopy. Compared to the bare control, our results show that the DAMS reduces bacterial coverage by more than 90% after 12 hrs of incubation and approximately 50% after 48 hrs of incubation before abrasion. Importantly, bacterial coverage is reduced by approximately 50% after 2 min of abrasion with a tribometer, and DAMS remains effective even after 6 min of abrasion. These findings highlight the potential of DAMS as an affordable, scalable, and durable antimicrobial surface for various biomedical applications.
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Duan X, Xu Y, Zhang Z, Ma X, Wang C, Ma W, Jia F, Pan X, Liu Y, Zhao Y, Li Q, Liu Z, Yang Y. Piezoelectrically-activated antibacterial catheter for prevention of urinary tract infections in an on-demand manner. Mater Today Bio 2024; 26:101089. [PMID: 38779557 PMCID: PMC11109010 DOI: 10.1016/j.mtbio.2024.101089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Revised: 04/13/2024] [Accepted: 05/10/2024] [Indexed: 05/25/2024] Open
Abstract
Catheter-associated urinary tract infection (CAUTI) is a common clinical problem, especially during long-term catheterization, causing additional pain to patients. The development of novel antimicrobial coatings is needed to prolong the service life of catheters and reduce the incidence of CAUTIs. Herein, we designed an antimicrobial catheter coated with a piezoelectric zinc oxide nanoparticles (ZnO NPs)-incorporated polyvinylidene difluoride-hexafluoropropylene (ZnO-PVDF-HFP) membrane. ZnO-PVDF-HFP could be stably coated onto silicone catheters simply by a one-step solution film-forming method, very convenient for industrial production. In vitro, it was demonstrated that ZnO-PVDF-HFP coating could significantly inhibit bacterial growth and the formation of bacterial biofilm under ultrasound-mediated mechanical stimulation even after 4 weeks. Importantly, the on and off of antimicrobial activity as well as the strenth of antibacterial property could be controlled in an adaptive manner via ultrasound. In a rabbit model, the ZnO-PVDF-HFP-coated catheter significantly reduced the incidence CAUTIs compared with clinically-commonly used catheters under assistance of ultrasonication, and no side effect was detected. Collectively, the study provided a novel antibacterial catheter to prevent the occurrence of CAUTIs, whose antibacterial activity could be controlled in on-demand manner, adaptive to infection situation and promising in clinical application.
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Affiliation(s)
- Xiaofeng Duan
- Department of Urology, The Third Affiliated Hospital of Jinzhou Medical University, Jinzhou, Liaoning, 121000, China
| | - Yongde Xu
- Department of Urology, Beijing Friendship Hospital, Capital Medical University, Beijing, 100050, China
| | - Zhifa Zhang
- Department of Neurosurgery, The First Medical Center of Chinese PLA General Hospital, Beijing, 100853, China
| | - Xinbo Ma
- Senior Department of Orthopedics, The Fourth Medical Center of PLA General Hospital, No. 51, Fucheng Road, Haidian District, Beijing, 100048, China
| | - Cui Wang
- Beijing Institute of Basic Medical Sciences, No. 27 Taiping Road, Haidian District, Beijing, 100850, China
| | - Wenjing Ma
- Beijing Institute of Basic Medical Sciences, No. 27 Taiping Road, Haidian District, Beijing, 100850, China
| | - Fan Jia
- Department of Urology, The Third Affiliated Hospital of Jinzhou Medical University, Jinzhou, Liaoning, 121000, China
| | - Xiaoying Pan
- Department of Urology, The Affiliated Hospital of Changchun University of Chinese Medicine, Changchun, Jilin, 130021, China
| | - Yang Liu
- Department of Urology, The Affiliated Hospital of Changchun University of Chinese Medicine, Changchun, Jilin, 130021, China
| | - Yantao Zhao
- Senior Department of Orthopedics, The Fourth Medical Center of PLA General Hospital, No. 51, Fucheng Road, Haidian District, Beijing, 100048, China
| | - Qihong Li
- Department of Stomatology, The Fifth Medical Center, Chinese PLA General Hospital, Beijing, 100071, China
| | - Zhiqiang Liu
- Beijing Institute of Basic Medical Sciences, No. 27 Taiping Road, Haidian District, Beijing, 100850, China
| | - Yong Yang
- Department of Urology, The Affiliated Hospital of Changchun University of Chinese Medicine, Changchun, Jilin, 130021, China
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Miftode IL, Vâță A, Miftode RȘ, Parângă T, Luca MC, Manciuc C, Țimpău AS, Radu V, Roșu MF, Stămăteanu LO, Leca D, Anton-Păduraru DT, Miftode EG. The Impact of Urinary Catheterization on the Antibiotic Susceptibility of ESBL-Producing Enterobacterales: A Challenging Duo. Antibiotics (Basel) 2024; 13:462. [PMID: 38786190 PMCID: PMC11117663 DOI: 10.3390/antibiotics13050462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2024] [Revised: 05/14/2024] [Accepted: 05/15/2024] [Indexed: 05/25/2024] Open
Abstract
INTRODUCTION Antimicrobial resistance (AMR) is currently a growing concern among healthcare providers, underscoring the importance of describing the regional susceptibility profile for common microorganisms that are associated with urinary tract infections (UTIs). This knowledge serves as the foundation for proper empirical therapeutic recommendations tailored to local susceptibility patterns. RESULTS We found a high prevalence of ESBL-producing strains (36.9%), with Escherichia coli and Klebsiella spp. being the most prevalent isolated bacteria. Among the catheterized patients, Klebsiella spp. emerged as the primary etiology, with a significant correlation between catheterization and Proteus spp. (p = 0.02) and Providencia stuartii (p < 0.0001). We observed significant correlations between urinary catheterization and older age (68.9 ± 13.7 years vs. 64.2 ± 18.1 years in non-catheterized patients, p = 0.026) and with the presence of an isolate with extensive drug resistance (p < 0.0001) or even pandrug resistance (p < 0.0001). Susceptibility rates significantly decreased for almost all the tested antibiotics during the study period. Notably, susceptibility was markedly lower among catheterized patients, with the most pronounced differences observed for carbapenems (59.6% versus 83.4%, p < 0.0001) and aminoglycosides (37.1% versus 46.9%, p = 0.0001). MATERIALS AND METHODS We conducted a retrospective study analyzing the susceptibility profiles of 724 extended-spectrum beta-lactamases (ESBL)-producing Enterobacterales isolated from urine cultures. Our focus was on highlighting susceptibility profiles among isolates associated with urinary catheterization and assessing the shifts in the susceptibility rates over time. CONCLUSIONS The constant rise in AMR rates among Enterobacterales presents significant challenges in treating severe infections, particularly among urinary catheterized patients. This trend leaves clinicians with limited or no effective treatment options. Consequently, the development and implementation of personalized treatment protocols are imperative to ensure efficient empirical therapies.
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Affiliation(s)
- Ionela-Larisa Miftode
- Department of Infectious Diseases (Internal Medicine II), Faculty of Medicine, University of Medicine and Pharmacy “Gr. T. Popa”, 700115 Iasi, Romania; (I.-L.M.); (A.V.); (T.P.); (M.C.L.); (C.M.); (L.O.S.); (D.L.); (E.G.M.)
- St. Parascheva Clinical Hospital of Infectious Diseases, 700116 Iasi, Romania;
| | - Andrei Vâță
- Department of Infectious Diseases (Internal Medicine II), Faculty of Medicine, University of Medicine and Pharmacy “Gr. T. Popa”, 700115 Iasi, Romania; (I.-L.M.); (A.V.); (T.P.); (M.C.L.); (C.M.); (L.O.S.); (D.L.); (E.G.M.)
- St. Parascheva Clinical Hospital of Infectious Diseases, 700116 Iasi, Romania;
| | - Radu-Ștefan Miftode
- Department of Internal Medicine I (Cardiology), Faculty of Medicine, University of Medicine and Pharmacy “Gr. T. Popa”, 700115 Iasi, Romania;
| | - Tudorița Parângă
- Department of Infectious Diseases (Internal Medicine II), Faculty of Medicine, University of Medicine and Pharmacy “Gr. T. Popa”, 700115 Iasi, Romania; (I.-L.M.); (A.V.); (T.P.); (M.C.L.); (C.M.); (L.O.S.); (D.L.); (E.G.M.)
- St. Parascheva Clinical Hospital of Infectious Diseases, 700116 Iasi, Romania;
| | - Mihaela Cătălina Luca
- Department of Infectious Diseases (Internal Medicine II), Faculty of Medicine, University of Medicine and Pharmacy “Gr. T. Popa”, 700115 Iasi, Romania; (I.-L.M.); (A.V.); (T.P.); (M.C.L.); (C.M.); (L.O.S.); (D.L.); (E.G.M.)
- St. Parascheva Clinical Hospital of Infectious Diseases, 700116 Iasi, Romania;
| | - Carmen Manciuc
- Department of Infectious Diseases (Internal Medicine II), Faculty of Medicine, University of Medicine and Pharmacy “Gr. T. Popa”, 700115 Iasi, Romania; (I.-L.M.); (A.V.); (T.P.); (M.C.L.); (C.M.); (L.O.S.); (D.L.); (E.G.M.)
- St. Parascheva Clinical Hospital of Infectious Diseases, 700116 Iasi, Romania;
| | - Amalia Stefana Țimpău
- Department of Internal Medicine I (Cardiology), Faculty of Medicine, University of Medicine and Pharmacy “Gr. T. Popa”, 700115 Iasi, Romania;
| | - Viorel Radu
- Department of Urology, Faculty of Medicine, University of Medicine and Pharmacy “Gr. T. Popa”, 700115 Iasi, Romania
| | - Manuel Florin Roșu
- St. Parascheva Clinical Hospital of Infectious Diseases, 700116 Iasi, Romania;
- Department of Intensive Care Unit, Infectious Diseases Clinical Hospital, 700115 Iasi, Romania
| | - Lidia Oana Stămăteanu
- Department of Infectious Diseases (Internal Medicine II), Faculty of Medicine, University of Medicine and Pharmacy “Gr. T. Popa”, 700115 Iasi, Romania; (I.-L.M.); (A.V.); (T.P.); (M.C.L.); (C.M.); (L.O.S.); (D.L.); (E.G.M.)
- St. Parascheva Clinical Hospital of Infectious Diseases, 700116 Iasi, Romania;
| | - Daniela Leca
- Department of Infectious Diseases (Internal Medicine II), Faculty of Medicine, University of Medicine and Pharmacy “Gr. T. Popa”, 700115 Iasi, Romania; (I.-L.M.); (A.V.); (T.P.); (M.C.L.); (C.M.); (L.O.S.); (D.L.); (E.G.M.)
- St. Parascheva Clinical Hospital of Infectious Diseases, 700116 Iasi, Romania;
| | - Dana Teodora Anton-Păduraru
- Department of Mother and Child Medicine, Faculty of Medicine, University of Medicine and Pharmacy “Gr. T. Popa”, 700115 Iasi, Romania;
| | - Egidia Gabriela Miftode
- Department of Infectious Diseases (Internal Medicine II), Faculty of Medicine, University of Medicine and Pharmacy “Gr. T. Popa”, 700115 Iasi, Romania; (I.-L.M.); (A.V.); (T.P.); (M.C.L.); (C.M.); (L.O.S.); (D.L.); (E.G.M.)
- St. Parascheva Clinical Hospital of Infectious Diseases, 700116 Iasi, Romania;
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Perelshtein I, Shoshani S, Jacobi G, Natan M, Dudchenko N, Perkas N, Tkachev M, Bengalli R, Fiandra L, Mantecca P, Ivanova K, Tzanov T, Banin E, Gedanken A. Protecting the Antibacterial Coating of Urinal Catheters for Improving Safety. ACS APPLIED BIO MATERIALS 2024; 7:990-998. [PMID: 38226433 DOI: 10.1021/acsabm.3c00988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2024]
Abstract
Catheter-associated urinary tract infections (CAUTI) are among the most common bacterial infections associated with prolonged hospitalization and increased healthcare expenditures. Despite recent advances in the prevention and treatment of these infections, there are still many challenges remaining, among them the creation of a durable catheter coating, which prevents bacterial biofilm formation. The current work reports on a method of protecting medical tubing endowed with antibiofilm properties. Silicone catheters coated sonochemically with ZnO nanoparticles (NPs) demonstrated excellent antibiofilm effects. Toward approval by the European Medicines Agency, it was realized that the ZnO coating would not withstand the regulatory requirements of avoiding dissolution for 14 days in artificial urine examination. Namely, after exposure to urine for 14 days, the coating amount was reduced by 90%. Additional coatings with either carbon or silica maintained antibiofilm activity against Staphylococcus aureus while resisting dissolution in artificial urine for 14 days (C- or SiO2-protected catheters exhibited only 29% reduction). HR-SEM images of the protected catheters indicate the presence of the ZnO coating as well as the protective layer. Antibiofilm activity of all catheters was evaluated both before and after exposure to artificial urine. It was shown that before artificial urine exposure, all coated catheters showed high antibiofilm properties compared to the uncoated control. Exposure of ZnO-coated catheters, without the protective layer, to artificial urine had a significant effect exhibited by the decrease in antibiofilm activity by almost 2 orders of magnitude, compared to unexposed catheters. Toxicity studies performed using a reconstructed human epidermis demonstrated the safety of the improved coating. Exposure of the epidermis to ZnO catheter extracts in artificial urine affects tissue viability compared with control samples, which was not observed in the case of ZnO NPs coating with SiO2 or C. We suggest that silica and carbon coatings confer some protection against zinc ions release, improving ZnO coating safety.
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Affiliation(s)
- Ilana Perelshtein
- Department of Chemistry, Bar-Ilan University, Ramat-Gan 5290002, Israel
- Institute of Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat-Gan 5290002, Israel
| | - Sivan Shoshani
- The Mina and Everard Goodman Faculty of Life Sciences, Institute of Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat-Gan 5290002, Israel
| | - Gila Jacobi
- The Mina and Everard Goodman Faculty of Life Sciences, Institute of Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat-Gan 5290002, Israel
| | - Michal Natan
- The Mina and Everard Goodman Faculty of Life Sciences, Institute of Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat-Gan 5290002, Israel
| | - Nataliia Dudchenko
- Institute of Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat-Gan 5290002, Israel
| | - Nina Perkas
- Department of Chemistry, Bar-Ilan University, Ramat-Gan 5290002, Israel
- Institute of Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat-Gan 5290002, Israel
| | - Maria Tkachev
- Institute of Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat-Gan 5290002, Israel
| | - Rossella Bengalli
- Department of Earth and Environmental Sciences, Research Center POLARIS, University of Milano Bicocca, Milan 20126, Italy
| | - Luisa Fiandra
- Department of Earth and Environmental Sciences, Research Center POLARIS, University of Milano Bicocca, Milan 20126, Italy
| | - Paride Mantecca
- Department of Earth and Environmental Sciences, Research Center POLARIS, University of Milano Bicocca, Milan 20126, Italy
| | - Kristina Ivanova
- Grup de Biotecnologia Molecular i Industrial, Department of Chemical Engineering, Universitat Politècnica de Catalunya, Rambla Sant Nebridi 22, 08222 Terrasa, Spain
| | - Tzanko Tzanov
- Grup de Biotecnologia Molecular i Industrial, Department of Chemical Engineering, Universitat Politècnica de Catalunya, Rambla Sant Nebridi 22, 08222 Terrasa, Spain
| | - Ehud Banin
- The Mina and Everard Goodman Faculty of Life Sciences, Institute of Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat-Gan 5290002, Israel
| | - Aharon Gedanken
- Department of Chemistry, Bar-Ilan University, Ramat-Gan 5290002, Israel
- Institute of Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat-Gan 5290002, Israel
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Navarro S, Abla H, Colmer-Hamood JA, Ventolini G, Hamood AN. Under conditions closely mimicking vaginal fluid, Lactobacillus jensenii strain 62B produces a bacteriocin-like inhibitory substance that targets and eliminates Gardnerella species. MICROBIOLOGY (READING, ENGLAND) 2023; 169. [PMID: 37909284 DOI: 10.1099/mic.0.001409] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2023]
Abstract
Within the vaginal ecosystem, lactobacilli and Gardnerella spp. likely interact and influence each other's growth, yet the details of this interaction are not clearly defined. Using medium simulating vaginal fluid and a two-chamber co-culturing system to prevent cell-to-cell contact between the bacteria, we examined the possibility that Lactobacillus jensenii 62B (Lj 62B) and/or G. piotii (Gp) JCP8151B produce extracellular factors through which they influence each other's viability. By 24 h post-inoculation (hpi) in the co-culture system and under conditions similar to the vaginal environment - pH 5.0, 37 °C, and 5% CO2, Lj 62B viability was not affected but Gp JCP8151B had been eliminated. Cell-free supernatant harvested from Lj 62B cultures (Lj-CFS) at 20 hpi, but not 16 hpi, also eliminated Gp JCP8151B growth. Neither lactic acid nor H2O2 production by Lj 62B was responsible for this effect. The Lj-CFS did not affect viability of three species of lactobacilli or eight species of Gram-positive and Gram-negative uropathogens but eliminated viability of eight different strains of Gardnerella spp. Activity of the inhibitory factor within Lj-CFS was abolished by protease treatment and reduced by heat treatment suggesting it is most likely a bacteriocin-like protein; fractionation revealed that the factor has a molecular weight within the 10-30 kDa range. These results suggest that, in medium mimicking vaginal fluid and growth conditions similar to the vaginal environment, Lj 62B produces a potential bacteriocin-like inhibitory substance (Lj-BLIS) that clearly targets Gardnerella spp. strains. Once fully characterized, Lj-BLIS may be a potential treatment for Gardnerella-related BV that does not alter the vaginal microflora.
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Affiliation(s)
- Stephany Navarro
- Department of Immunology and Molecular Microbiology, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - Habib Abla
- School of Medicine, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - Jane A Colmer-Hamood
- Department of Medical Education, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - Gary Ventolini
- Department of Obstetrics and Gynecology, Texas Tech University Health Sciences Center Permian Basin, Odessa, TX, USA
| | - Abdul N Hamood
- Department of Immunology and Molecular Microbiology, Texas Tech University Health Sciences Center, Lubbock, TX, USA
- Department of Surgery, Texas Tech University Health Sciences Center, Lubbock, TX, USA
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Xie Z, Jian J, Chen L. Analysis of Antimicrobial Susceptibility in Bacterial Pathogens Associated with Urinary Tract Infections from Beijing Teaching Hospital in China, 2009-2017. THE CANADIAN JOURNAL OF INFECTIOUS DISEASES & MEDICAL MICROBIOLOGY = JOURNAL CANADIEN DES MALADIES INFECTIEUSES ET DE LA MICROBIOLOGIE MEDICALE 2023; 2023:4360342. [PMID: 37529141 PMCID: PMC10390260 DOI: 10.1155/2023/4360342] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 06/20/2023] [Accepted: 07/04/2023] [Indexed: 08/03/2023]
Abstract
Objective Since a urinary tract infection (UTI) is easy to relapse and difficult to treat, the antibiotic resistance rate has increased year by year in recent years. This study was to analyze the characteristics of the common pathogenic bacteria and the changes of antibiotic resistance in urinary system infection, so as to guide the standard use of antibiotics in a clinical urinary tract infection and control nosocomial infection effectively. Methods A total of 5,669 strains of a urinary tract infection in the hospital from January 2009 to December 2017 were retrospectively analyzed. Bacterial identification and the antibiotic sensitivity test (AST) were analyzed by using a VITEK-2 Compact system. Results Of the 5669 pathogens, 3,256 (57.44%) of the strains were Gram-negative bacteria (GNB), 1,474 (26%) were Gram-positive bacteria (GPB), and 939 (16.56%) were fungi. Resistant rates of ESBL-producing strains were all significantly different from non-ESBL-producing strains in Escherichia coli (p < 0.05). The resistance rate of ESBL-producing strains to β-lactam antibiotics was all higher than that of non-ESBL-producing strains in Klebsiella pneumoniae (p < 0.05). The detection rate of vancomycin-resistantEnterococcus faecium and Enterococcus faecalis was 37.3% and 3.1%, respectively, and the detection rate of linezolid-resistantEnterococcus faecium and Enterococcus faecalis was 0.68% and 0%, respectively. The drug resistance rate of candida sp. to fluconazole, itraconazole, and voriconazole was 1.7%, 8.5%, and 3.4%, respectively. No amphotericin B-resistant strains were detected in the research. Conclusions Among the 5669 strains isolated from urinary tract infection patients, GNB were the main pathogens. Escherichia coli was the major pathogen. The resistance rate of ESBLs-producingEscherichia coli was higher than that of non-ESBLs-producingEscherichia coli in general; meanwhile, β-lactam/β-lactamase inhibitors and carbapenems maintained good antimicrobial activity against Escherichia coli. The resistance rate of non-ESBLs-producingKlebsiella pneumoniae strains was significantly higher than that of ESBLs-producingKlebsiella pneumoniae strains, and drug resistance was more prominent; most of the antibiotic resistance rates were over 50%. The antimicrobial resistance rate of Enterococcus faecium was significantly higher than that of Enterococcus faecalis. There were rare linezolid-resistant strains. The antimicrobial resistance rate of imidazole to fungi was controlled less than 10%.
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Affiliation(s)
- Zeqiang Xie
- Clinical Laboratory Medicine, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
- Peking University Ninth School of Clinical Medicine, Beijing, China
- Beijing Key Laboratory of Urinary Cellular Molecular Diagnostics, Beijing, China
| | - Jiyong Jian
- Clinical Laboratory Medicine, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
- Peking University Ninth School of Clinical Medicine, Beijing, China
- Beijing Key Laboratory of Urinary Cellular Molecular Diagnostics, Beijing, China
| | - Liang Chen
- Clinical Laboratory Medicine, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
- Peking University Ninth School of Clinical Medicine, Beijing, China
- Beijing Key Laboratory of Urinary Cellular Molecular Diagnostics, Beijing, China
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8
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Kavaliauskas P, Grybaitė B, Vaickelionienė R, Sapijanskaitė-Banevič B, Anusevičius K, Kriaučiūnaitė A, Smailienė G, Petraitis V, Petraitienė R, Naing E, Garcia A, Mickevičius V. Synthesis and Development of N-2,5-Dimethylphenylthioureido Acid Derivatives as Scaffolds for New Antimicrobial Candidates Targeting Multidrug-Resistant Gram-Positive Pathogens. Antibiotics (Basel) 2023; 12:antibiotics12020220. [PMID: 36830130 PMCID: PMC9952208 DOI: 10.3390/antibiotics12020220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 01/16/2023] [Accepted: 01/18/2023] [Indexed: 01/22/2023] Open
Abstract
The growing antimicrobial resistance to last-line antimicrobials among Gram-positive pathogens remains a major healthcare emergency worldwide. Therefore, the search for new small molecules targeting multidrug-resistant pathogens remains of great importance. In this paper, we report the synthesis and in vitro antimicrobial activity characterisation of novel thiazole derivatives using representative Gram-negative and Gram-positive strains, including tedizolid/linezolid-resistant S. aureus, as well as emerging fungal pathogens. The 4-substituted thiazoles 3h, and 3j with naphthoquinone-fused thiazole derivative 7 with excellent activity against methicillin and tedizolid/linezolid-resistant S. aureus. Moreover, compounds 3h, 3j and 7 showed favourable activity against vancomycin-resistant E. faecium. Compounds 9f and 14f showed broad-spectrum antifungal activity against drug-resistant Candida strains, while ester 8f showed good activity against Candida auris which was greater than fluconazole. Collectively, these data demonstrate that N-2,5-dimethylphenylthioureido acid derivatives could be further explored as novel scaffolds for the development of antimicrobial candidates targeting Gram-positive bacteria and drug-resistant pathogenic fungi.
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Affiliation(s)
- Povilas Kavaliauskas
- Department of Organic Chemistry, Kaunas University of Technology, Radvilėnų Rd. 19, LT-50254 Kaunas, Lithuania
- Transplantation-Oncology Infectious Diseases Program, Division of Infectious Diseases, Department of Medicine, Weill Cornell Medicine of Cornell University, 1300 York Ave., New York, NY 10065, USA
- Institute for Genome Sciences, School of Medicine, University of Maryland, 655 W. Baltimore Street, Baltimore, MD 21201, USA
- Institute of Infectious Diseases and Pathogenic Microbiology, Birštono Str. 38A, LT-59116 Prienai, Lithuania
| | - Birutė Grybaitė
- Department of Organic Chemistry, Kaunas University of Technology, Radvilėnų Rd. 19, LT-50254 Kaunas, Lithuania
| | - Rita Vaickelionienė
- Department of Organic Chemistry, Kaunas University of Technology, Radvilėnų Rd. 19, LT-50254 Kaunas, Lithuania
| | | | - Kazimieras Anusevičius
- Department of Organic Chemistry, Kaunas University of Technology, Radvilėnų Rd. 19, LT-50254 Kaunas, Lithuania
- Correspondence: ; Tel.: +370-646-21841
| | - Agnė Kriaučiūnaitė
- Department of Organic Chemistry, Kaunas University of Technology, Radvilėnų Rd. 19, LT-50254 Kaunas, Lithuania
| | - Gabrielė Smailienė
- Department of Organic Chemistry, Kaunas University of Technology, Radvilėnų Rd. 19, LT-50254 Kaunas, Lithuania
| | - Vidmantas Petraitis
- Transplantation-Oncology Infectious Diseases Program, Division of Infectious Diseases, Department of Medicine, Weill Cornell Medicine of Cornell University, 1300 York Ave., New York, NY 10065, USA
- Institute of Infectious Diseases and Pathogenic Microbiology, Birštono Str. 38A, LT-59116 Prienai, Lithuania
| | - Rūta Petraitienė
- Transplantation-Oncology Infectious Diseases Program, Division of Infectious Diseases, Department of Medicine, Weill Cornell Medicine of Cornell University, 1300 York Ave., New York, NY 10065, USA
- Institute of Infectious Diseases and Pathogenic Microbiology, Birštono Str. 38A, LT-59116 Prienai, Lithuania
| | - Ethan Naing
- Transplantation-Oncology Infectious Diseases Program, Division of Infectious Diseases, Department of Medicine, Weill Cornell Medicine of Cornell University, 1300 York Ave., New York, NY 10065, USA
| | - Andrew Garcia
- Transplantation-Oncology Infectious Diseases Program, Division of Infectious Diseases, Department of Medicine, Weill Cornell Medicine of Cornell University, 1300 York Ave., New York, NY 10065, USA
| | - Vytautas Mickevičius
- Department of Organic Chemistry, Kaunas University of Technology, Radvilėnų Rd. 19, LT-50254 Kaunas, Lithuania
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