1
|
Soliman S, Abdalla S, Zedan A, Enany S. Genomic profiling of pan-drug resistant proteus mirabilis Isolates reveals antimicrobial resistance and virulence gene landscape. Funct Integr Genomics 2024; 24:154. [PMID: 39223360 DOI: 10.1007/s10142-024-01419-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2024] [Revised: 08/06/2024] [Accepted: 08/08/2024] [Indexed: 09/04/2024]
Abstract
Proteus mirabilis is a gram-negative pathogen that caused significant opportunistic infections. In this study we aimed to identify antimicrobial resistance (AMR) genes and virulence determinants in two pan-drug resistant isolate "Bacteria_11" and "Bacteria_27" using whole genome sequencing. Proteus mirabilis "Bacteria_11" and "Bacteria_27" were isolated from two different hospitalized patients in Egypt. Antimicrobial susceptibility determined using Vitek 2 system, then whole genome sequencing (WGS) using MinION nanopore sequencing was done. Antimicrobial resistant genes and virulence determinants were identified using ResFinder, CADR AMR database, Abricate tool and VF analyzer were used respectively. Multiple sequence alignment was performed using MAFFT and FastTree, respectively. All genes were present within bacterial chromosome and no plasmid was detected. "Bacteria_11" and "Bacteria_27" had sizes of approximately 4,128,657 bp and 4,120,646 bp respectively, with GC content of 39.15% and 39.09%. "Bacteria_11" and "Bacteria_27" harbored 43 and 42 antimicrobial resistance genes respectively with different resistance mechanisms, and up to 55 and 59 virulence genes respectively. Different resistance mechanisms were identified: antibiotic inactivation, antibiotic efflux, antibiotic target replacement, and antibiotic target change. We identified several genes associated with aminoglycoside resistance, sulfonamide resistance. trimethoprim resistance tetracycline resistance proteins. Also, those responsible for chloramphenicol resistance. For beta-lactam resistance, only blaVEB and blaCMY-2 genes were detected. Genome analysis revealed several virulence factors contribution in isolates pathogenicity and bacterial adaptation. As well as numerous typical secretion systems (TSSs) were present in the two isolates, including T6SS and T3SS. Whole genome sequencing of both isolates identify their genetic context of antimicrobial resistant genes and virulence determinants. This genomic analysis offers detailed representation of resistant mechanisms. Also, it clarifies P. mirabilis ability to acquire resistance and highlights the emergence of extensive drug resistant (XDR) and pan-drug resistant (PDR) strains. This may help in choosing the most appropriate antibiotic treatment and limiting broad spectrum antibiotic use.
Collapse
Affiliation(s)
- Sarah Soliman
- Trauma Intensive Care Unit, Zagazig University Hospitals, Zagazig, Egypt
| | - Salah Abdalla
- Department of Microbiology and Immunology, Faculty of Pharmacy, Suez Canal University, Ismailia, Egypt
- Department of Microbiology and Immunology, Faculty of Pharmacy, El Saleheya El Gadida University, El Saleheya, Egypt
| | - Amal Zedan
- Department of Clinical Pathology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Shymaa Enany
- Department of Microbiology and Immunology, Faculty of Pharmacy, Suez Canal University, Ismailia, Egypt.
- Biomedical Research Department, Armed Force College of Medicine, Cairo, Egypt.
| |
Collapse
|
2
|
Zhu MR, Hong HX, Cheng JR, Tang J, Lu T, Xie R. Risk Factors Analysis and Pathogen Distribution of Urinary Tract Infection in Patients Undergoing Cutaneous Ureterostomy After Radical Cystectomy for Bladder Cancer. Biol Res Nurs 2024; 26:361-367. [PMID: 38196248 DOI: 10.1177/10998004241226948] [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: 01/11/2024]
Abstract
BACKGROUND Postoperative urinary tract infection is a common complication that not only significantly prolongs the hospital stay and amplifies the economic burden on patients, but also affects their quality of life and prognosis. This study aimed to investigate risk factors and distribution of pathogenic bacteria in urinary tract infections among bladder cancer patients who underwent cutaneous ureterostomy following radical cystectomy. METHODS A total of 137 bladder cancer patients, who underwent cutaneous ureterostomy after radical cystectomy at our hospital from November 2018 to October 2022, were enrolled in this retrospective study. Univariate and multivariate logistic regression analyses were employed to investigate the risk factors associated with postoperative urinary tract infection and the distribution of pathogenic bacteria among the infected patients. RESULTS The results of both univariate and multivariate analyses confirmed that age, proficiency in ostomy knowledge, frequency of ureteral stent tube replacement, ureteral stent tube dislodgement, urine immersion at the outer end of the ureteral stent tube, and the interval of ostomy bag replacement were independent risk factors for urinary tract infection after radical cystectomy and cutaneous ureterostomy in bladder cancer patients. A total of 55 pathogenic bacteria were isolated from 52 patients with infections. Predominantly, these were gram-negative bacteria (34 strains, 61.8%), with Proteus mirabilis having the highest proportion. CONCLUSION Urinary tract infections after radical cystectomy and cutaneous ureterostomy predominantly involve gram-negative bacteria. This is correlated with factors such as the age of bladder cancer patients, the level of nursing education, the duration of ureteral stent tubes and ostomy bag usage, as well as issues related to impaired urine drainage.
Collapse
Affiliation(s)
- Mu-Rong Zhu
- Department of Urology, The First Affiliated Hospital With Nanjing Medical University (Jiangsu Province Hospital), Nanjing, China
- Department of Nursing, The First Affiliated Hospital With Nanjing Medical University (Jiangsu Province Hospital), Nanjing, China
| | - Han-Xia Hong
- Department of Urology, The First Affiliated Hospital With Nanjing Medical University (Jiangsu Province Hospital), Nanjing, China
- Department of Nursing, The First Affiliated Hospital With Nanjing Medical University (Jiangsu Province Hospital), Nanjing, China
| | - Jing-Ru Cheng
- Department of Urology, The First Affiliated Hospital With Nanjing Medical University (Jiangsu Province Hospital), Nanjing, China
- Department of Nursing, The First Affiliated Hospital With Nanjing Medical University (Jiangsu Province Hospital), Nanjing, China
| | - Jing Tang
- Department of Urology, The First Affiliated Hospital With Nanjing Medical University (Jiangsu Province Hospital), Nanjing, China
- Department of Nursing, The First Affiliated Hospital With Nanjing Medical University (Jiangsu Province Hospital), Nanjing, China
| | - Tong Lu
- Department of Urology, The First Affiliated Hospital With Nanjing Medical University (Jiangsu Province Hospital), Nanjing, China
- Department of Nursing, The First Affiliated Hospital With Nanjing Medical University (Jiangsu Province Hospital), Nanjing, China
| | - Rui Xie
- Department of Urology, The First Affiliated Hospital With Nanjing Medical University (Jiangsu Province Hospital), Nanjing, China
- Department of Nursing, The First Affiliated Hospital With Nanjing Medical University (Jiangsu Province Hospital), Nanjing, China
| |
Collapse
|
3
|
Fuochi V, Furnari S, Trovato L, Calvo M, Furneri PM. Therapies in preclinical and in early clinical development for the treatment of urinary tract infections: from pathogens to therapies. Expert Opin Investig Drugs 2024; 33:677-698. [PMID: 38700945 DOI: 10.1080/13543784.2024.2351509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Accepted: 05/01/2024] [Indexed: 05/05/2024]
Abstract
INTRODUCTION Urinary tract infections (UTIs) are a prevalent health challenge characterized by the invasion and multiplication of microorganisms in the urinary system. The continuous exploration of novel therapeutic interventions is imperative. Advances in research offer hope for revolutionizing the management of UTIs and improving the overall health outcomes for individuals affected by these infections. AREAS COVERED This review aimed to provide an overview of existing treatments for UTIs, highlighting their strengths and limitations. Moreover, we explored and analyzed the latest therapeutic modalities under clinical development. Finally, the review offered a picture into the potential implications of these therapies on the future landscape of UTIs treatment, discussing possible advancements and challenges for further research. EXPERT OPINION Comprehensions into the pathogenesis of UTIs have been gleaned from foundational basic science studies, laying the groundwork for the exploration of novel therapeutic interventions. The primary source of evidence originates predominantly from animal studies conducted on murine models. Nevertheless, the lack of clinical trials interferes the acquisition of robust evidence in humans. The challenges presented by the heterogeneity and virulence of uropathogens add an additional layer of complexity, posing an obstacle that scientists and clinicians are actively grappling with in their pursuit of effective solutions.
Collapse
Affiliation(s)
- Virginia Fuochi
- Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - Salvatore Furnari
- Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - Laura Trovato
- Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
- U.O.C. Laboratory Analysis Unit, A.O.U. "Policlinico-San Marco", Catania, Italy
| | - Maddalena Calvo
- U.O.C. Laboratory Analysis Unit, A.O.U. "Policlinico-San Marco", Catania, Italy
| | - Pio Maria Furneri
- Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| |
Collapse
|
4
|
Li H, Hong L, Szymczak W, Orner E, Garber AI, Cooper VS, Chen W, De A, Tang JX, Mani S. Protocol for isolating single species of bacteria with swarming ability from human feces. STAR Protoc 2024; 5:102961. [PMID: 38573864 PMCID: PMC10999858 DOI: 10.1016/j.xpro.2024.102961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 11/20/2023] [Accepted: 03/01/2024] [Indexed: 04/06/2024] Open
Abstract
Understanding the specific movements of bacteria isolated from human feces can serve as a novel diagnostic and therapeutic tool for inflammatory bowel disease. Here, we present a protocol for a microbial swarming assay and to isolate the bacteria responsible for swarming activity. We describe steps for identifying bacteria using MALDI-TOF mass spectrometry and whole-genome sequencing. We then detail procedures for validating findings by observing the same swarming phenotype upon reperforming the swarming assay. For complete details on the use and execution of this protocol, please refer to De et al.1.
Collapse
Affiliation(s)
- Hao Li
- Department of Medicine, Genetics and Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Lilli Hong
- Department of Medicine, Genetics and Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Wendy Szymczak
- Montefiore Medical Center, Bronx, NY 10467, USA; Department of Pathology, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Erika Orner
- Montefiore Medical Center, Bronx, NY 10467, USA; Department of Pathology, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | | | - Vaughn S Cooper
- Department of Microbiology and Molecular Genetics, University of Pittsburgh, School of Medicine, Pittsburgh, PA 15213, USA; Center for Evolutionary Biology and Medicine, University of Pittsburgh, School of Medicine, Pittsburgh, PA 15213, USA; Department of Molecular, Cellular, and Biomedical Sciences, University of New Hampshire, Durham, NH 03824, USA
| | - Weijie Chen
- Department of Medicine, Genetics and Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, NY 10461, USA; Intelligent Medicine Institute, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Arpan De
- Department of Medicine, Genetics and Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Jay X Tang
- Brown University, Physics Department, Providence, RI 02912, USA
| | - Sridhar Mani
- Department of Medicine, Genetics and Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, NY 10461, USA.
| |
Collapse
|
5
|
Bouhrour N, Nibbering PH, Bendali F. Medical Device-Associated Biofilm Infections and Multidrug-Resistant Pathogens. Pathogens 2024; 13:393. [PMID: 38787246 PMCID: PMC11124157 DOI: 10.3390/pathogens13050393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 04/29/2024] [Accepted: 05/04/2024] [Indexed: 05/25/2024] Open
Abstract
Medical devices such as venous catheters (VCs) and urinary catheters (UCs) are widely used in the hospital setting. However, the implantation of these devices is often accompanied by complications. About 60 to 70% of nosocomial infections (NIs) are linked to biofilms. The main complication is the ability of microorganisms to adhere to surfaces and form biofilms which protect them and help them to persist in the host. Indeed, by crossing the skin barrier, the insertion of VC inevitably allows skin flora or accidental environmental contaminants to access the underlying tissues and cause fatal complications like bloodstream infections (BSIs). In fact, 80,000 central venous catheters-BSIs (CVC-BSIs)-mainly occur in intensive care units (ICUs) with a death rate of 12 to 25%. Similarly, catheter-associated urinary tract infections (CA-UTIs) are the most commonlyhospital-acquired infections (HAIs) worldwide.These infections represent up to 40% of NIs.In this review, we present a summary of biofilm formation steps. We provide an overview of two main and important infections in clinical settings linked to medical devices, namely the catheter-asociated bloodstream infections (CA-BSIs) and catheter-associated urinary tract infections (CA-UTIs), and highlight also the most multidrug resistant bacteria implicated in these infections. Furthermore, we draw attention toseveral useful prevention strategies, and advanced antimicrobial and antifouling approaches developed to reduce bacterial colonization on catheter surfaces and the incidence of the catheter-related infections.
Collapse
Affiliation(s)
- Nesrine Bouhrour
- Laboratoire de Microbiologie Appliquée, Faculté des Sciences de la Nature et de la Vie, Université de Bejaia, Bejaia 06000, Algeria;
| | - Peter H. Nibbering
- Department of Infectious Diseases, Leiden University Medical Center, 2300 RC Leiden, The Netherlands;
| | - Farida Bendali
- Laboratoire de Microbiologie Appliquée, Faculté des Sciences de la Nature et de la Vie, Université de Bejaia, Bejaia 06000, Algeria;
| |
Collapse
|
6
|
Prywer J, Torzewska A, Mielniczek-Brzóska E. Understanding the role of zinc ions on struvite nucleation and growth in the context of infection urinary stones. Metallomics 2024; 16:mfae017. [PMID: 38599629 PMCID: PMC11095266 DOI: 10.1093/mtomcs/mfae017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2024] [Accepted: 04/09/2024] [Indexed: 04/12/2024]
Abstract
Taking into account that in recent decades there has been an increase in the incidence of urinary stones, especially in highly developed countries, from a wide range of potentially harmful substances commonly available in such countries, we chose zinc for the research presented in this article, which is classified by some sources as a heavy metal. In this article, we present the results of research on the influence of Zn2+ ion on the nucleation and growth of struvite crystals-the main component of infection urinary stones. The tests were carried out in an artificial urine environment with and without the presence of Proteus mirabilis bacteria. In the latter case, the activity of bacterial urease was simulated chemically, by systematic addition of an aqueous ammonia solution. The obtained results indicate that Zn2+ ions compete with Mg2+ ions, which leads to the gradual replacement of Mg2+ ions in the struvite crystal lattice with Zn2+ ions to some extent. This means co-precipitation of Mg-struvite (MgNH4PO4·6H2O) and Znx-struvite (Mg1-xZnxNH4PO4·6H2O). Speciation analysis of chemical complexes showed that Znx-struvite precipitates at slightly lower pH values than Mg-struvite. This means that Zn2+ ions shift the nucleation point of crystalline solids towards a lower pH. Additionally, the conducted research shows that Zn2+ ions, in the range of tested concentrations, do not have a toxic effect on bacteria; on the contrary, it has a positive effect on cellular metabolism, enabling bacteria to develop better. It means that Zn2+ ions in artificial urine, in vitro, slightly increase the risk of developing infection urinary stones.
Collapse
Affiliation(s)
- Jolanta Prywer
- Institute of Physics, Lodz University of Technology, ul. Wólczańska 217/221, 93-005 Łódź, Poland
| | - Agnieszka Torzewska
- Department of Biology of Bacteria, Faculty of Biology and Environmental Protection, University of Lodz, ul. Banacha 12/16, 90-237 Łódź, Poland
| | - Ewa Mielniczek-Brzóska
- Institute of Chemistry, Faculty of Science and Technology, Jan Długosz University of Czestochowa, ul. Armii Krajowej 13/15, 42-200 Częstochowa, Poland
| |
Collapse
|
7
|
Amina R, Habiba R, Abouddihaj B. Camel urine as a potential source of bioactive molecules showing their efficacy against pathogens: A systematic review. Saudi J Biol Sci 2024; 31:103966. [PMID: 38495380 PMCID: PMC10940778 DOI: 10.1016/j.sjbs.2024.103966] [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: 10/24/2023] [Revised: 02/20/2024] [Accepted: 02/24/2024] [Indexed: 03/19/2024] Open
Abstract
Camels are highly suited for severe desert conditions and able to provide most of the natural products like urine, which has been used as alternative medicine to treat diverse infections and disorders. There is, however, a shortage and paucity of scientific reviews highlighting the antifungal, antibacterial and antiviral effects of camel urine. By better understanding its antimicrobial characteristics, our overarching aim is to provide an exhaustive overview of this valuable natural product by synthesizing and summarizing data on the efficacy of this biofluid and also describing the potential substances exhibiting antimicrobial properties. We searched three databases in order to point out relevant articles (Web of Science, Scopus and Google Scholar) until December 2022. Research articles of interest evaluating the antimicrobial effects of camel urine were selected. Overall, camel urine furnished promising antibacterial activities against gram-positive bacteria, namely Staphylococcus aureus (30 mm), Bacillus cereus (22 mm), Bacillus subtilis (25 mm) and Micrococcus luteus (21 mm), as well as gram-negative bacteria, especially Escherichia coli, Klebsiella pneumoniae, Pseudomonas aeruginosa, Enterobacter cloacae, and Salmonella spp., without forgetting its efficiency on Mycobacterium tuberculosis as well. The excretion also showed its potency against H1N1 virus, vesicular stomatitis virus and middle east respiratory syndrome coronavirus. Similarly, the camel urine featured strong antifungal activity against Candida albicans, Aspergillus niger, Aspergillus flavus and dermatophytes with a minimal inhibitory concentration of 0.625 μg/ml against Trichophyton violaceum, 2.5 μg/ml against Microsporum canis and 1.25 μg/ml against Trichophyton rubrum and Trichophyton mentagrophytes. This comprehensive review will be valuable for researchers interested in investigating the potential of camel urine in the development of novel broad-spectrum key molecules targeting a wide range of drug-resistant pathogenic microorganisms.
Collapse
Affiliation(s)
- Ressmi Amina
- Laboratory of Biotechnology and Sustainable Development of Natural Resources, Life Sciences Department, Polydisciplinary Faculty, Sultan Moulay Slimane University, Beni Mellal 23023, Morocco
| | - Raqraq Habiba
- Laboratory of Biotechnology and Sustainable Development of Natural Resources, Life Sciences Department, Polydisciplinary Faculty, Sultan Moulay Slimane University, Beni Mellal 23023, Morocco
| | - Barguigua Abouddihaj
- Laboratory of Biotechnology and Sustainable Development of Natural Resources, Life Sciences Department, Polydisciplinary Faculty, Sultan Moulay Slimane University, Beni Mellal 23023, Morocco
| |
Collapse
|
8
|
Resci I, Zavatta L, Piva S, Mondo E, Albertazzi S, Nanetti A, Bortolotti L, Cilia G. Predictive statistical models for monitoring antimicrobial resistance spread in the environment using Apis mellifera (L. 1758) colonies. ENVIRONMENTAL RESEARCH 2024; 248:118365. [PMID: 38301758 DOI: 10.1016/j.envres.2024.118365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 01/17/2024] [Accepted: 01/29/2024] [Indexed: 02/03/2024]
Abstract
The rise of antimicrobial resistance (AMR) is one of the most relevant problems for human and animal health. According to One Health Approach, it is important to regulate the use of antimicrobials and monitor the spread of AMR in the environment as well. Apis mellifera (L. 1758) colonies were used as bioindicators thanks to their physical and behavioural characteristics. During their foraging flights, bees can intercept small particles, including atmospheric particulate matter, etc., and also microorganisms. To date, the antimicrobial surveillance network is limited to the sanitary level but lacks into environmental context. This study aimed to evaluate the use of A. mellifera colonies distributed throughout the Emilia-Romagna region (Italy) as indicators of environmental antimicrobial-resistant bacteria. This was performed by creating a statistical predictive model that establishes correlations between environmental characteristics and the likelihood of isolating specific bacterial genera and antimicrobial-resistant strains. A total of 608 strains were isolated and tested for susceptibility to 19 different antimicrobials. Aztreonam-resistant strains were significantly related to environments with sanitary structures, agricultural areas and wetlands, while urban areas present a higher probability of trimethoprim/sulfamethoxazole-resistant strains isolation. Concerning genera, environments with sanitary structures and wetlands are significantly related to the genera Proteus spp., while the Escherichia spp. strains can be probably isolated in industrial environments. The obtained models showed maximum values of Models Accuracy and robustness (R2) of 55 % and 24 %, respectively. The results indicate the efficacy of utilizing A. mellifera colonies as valuable bioindicators for estimating the prevalence of AMR in environmentally disseminated bacteria. This survey can be considered a good basis for the development of further studies focused on monitoring both sanitary and animal pathology, creating a specific network in the environments of interest.
Collapse
Affiliation(s)
- Ilaria Resci
- Research Centre for Agriculture and Environment (CREA-AA), Council for Agricultural Research and Agricultural Economics Analysis, Via di Corticella 133, 40128 Bologna, Italy; Department of Veterinary Sciences, University of Bologna, Via Tolara di Sopra, 43, 40064 Ozzano Dell'Emilia (BO), Italy
| | - Laura Zavatta
- Research Centre for Agriculture and Environment (CREA-AA), Council for Agricultural Research and Agricultural Economics Analysis, Via di Corticella 133, 40128 Bologna, Italy; DISTAL-Department of Agricultural and Food Sciences, University of Bologna, 40127 Bologna, Italy
| | - Silvia Piva
- Department of Veterinary Sciences, University of Bologna, Via Tolara di Sopra, 43, 40064 Ozzano Dell'Emilia (BO), Italy
| | - Elisabetta Mondo
- Department of Veterinary Sciences, University of Bologna, Via Tolara di Sopra, 43, 40064 Ozzano Dell'Emilia (BO), Italy
| | - Sergio Albertazzi
- Research Centre for Agriculture and Environment (CREA-AA), Council for Agricultural Research and Agricultural Economics Analysis, Via di Corticella 133, 40128 Bologna, Italy
| | - Antonio Nanetti
- Research Centre for Agriculture and Environment (CREA-AA), Council for Agricultural Research and Agricultural Economics Analysis, Via di Corticella 133, 40128 Bologna, Italy
| | - Laura Bortolotti
- Research Centre for Agriculture and Environment (CREA-AA), Council for Agricultural Research and Agricultural Economics Analysis, Via di Corticella 133, 40128 Bologna, Italy
| | - Giovanni Cilia
- Research Centre for Agriculture and Environment (CREA-AA), Council for Agricultural Research and Agricultural Economics Analysis, Via di Corticella 133, 40128 Bologna, Italy.
| |
Collapse
|
9
|
Fitzgerald MJ, Pearson MM, Mobley HLT. Proteus mirabilis UreR coordinates cellular functions required for urease activity. J Bacteriol 2024; 206:e0003124. [PMID: 38534115 PMCID: PMC11025324 DOI: 10.1128/jb.00031-24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Accepted: 03/05/2024] [Indexed: 03/28/2024] Open
Abstract
A hallmark of Proteus mirabilis infection of the urinary tract is the formation of stones. The ability to induce urinary stone formation requires urease, a nickel metalloenzyme that hydrolyzes urea. This reaction produces ammonia as a byproduct, which can serve as a nitrogen source and weak base that raises the local pH. The resulting alkalinity induces the precipitation of ions to form stones. Transcriptional regulator UreR activates expression of urease genes in a urea-dependent manner. Thus, urease genes are highly expressed in the urinary tract where urea is abundant. Production of mature urease also requires the import of nickel into the cytoplasm and its incorporation into the urease apoenzyme. Urease accessory proteins primarily acquire nickel from one of two nickel transporters and facilitate incorporation of nickel to form mature urease. In this study, we performed a comprehensive RNA-seq to define the P. mirabilis urea-induced transcriptome as well as the UreR regulon. We identified UreR as the first defined regulator of nickel transport in P. mirabilis. We also offer evidence for the direct regulation of the Ynt nickel transporter by UreR. Using bioinformatics, we identified UreR-regulated urease loci in 15 Morganellaceae family species across three genera. Additionally, we located two mobilized UreR-regulated urease loci that also encode the ynt transporter, implying that UreR regulation of nickel transport is a conserved regulatory relationship. Our study demonstrates that UreR specifically regulates genes required to produce mature urease, an essential virulence factor for P. mirabilis uropathogenesis. IMPORTANCE Catheter-associated urinary tract infections (CAUTIs) account for over 40% of acute nosocomial infections in the USA and generate $340 million in healthcare costs annually. A major causative agent of CAUTIs is Proteus mirabilis, an understudied Gram-negative pathogen noted for its ability to form urinary stones via the activity of urease. Urease mutants cannot induce stones and are attenuated in a murine UTI model, indicating this enzyme is essential to P. mirabilis pathogenesis. Transcriptional regulation of urease genes by UreR is well established; here, we expand the UreR regulon to include regulation of nickel import, a function required to produce mature urease. Furthermore, we reflect on the role of urea catalysis in P. mirabilis metabolism and provide evidence for its importance.
Collapse
Affiliation(s)
- Madison J. Fitzgerald
- Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Melanie M. Pearson
- Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Harry L. T. Mobley
- Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, Michigan, USA
| |
Collapse
|
10
|
Kyung SM, Lee JH, Lee ES, Xiang XR, Yoo HS. Emergence and genomic chion of Proteus mirabilis harboring bla NDM-1 in Korean companion dogs. Vet Res 2024; 55:50. [PMID: 38594755 PMCID: PMC11005143 DOI: 10.1186/s13567-024-01306-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Accepted: 02/26/2024] [Indexed: 04/11/2024] Open
Abstract
Proteus mirabilis is a commensal bacterium dwelling in the gastrointestinal (GI) tract of humans and animals. Although New Delhi metallo-β-lactamase 1 (NDM-1) producing P. mirabilis is emerging as a threat, its epidemiology in our society remains largely unknown. LHPm1, the first P. mirabilis isolate harboring NDM-1, was detected from a companion dog that resides with a human owner. The whole-genome study revealed 20 different antimicrobial resistance (AMR) genes against various classes of antimicrobial agents, which corresponded to the MIC results. Genomic regions, including MDR genes, were identified with multiple variations and visualized in a comparative manner. In the whole-genome epidemiological analysis, multiple phylogroups were identified, revealing the genetic relationship of LHPm1 with other P. mirabilis strains carrying various AMR genes. These genetic findings offer comprehensive insights into NDM-1-producing P. mirabilis, underscoring the need for urgent control measures and surveillance programs using a "one health approach".
Collapse
Affiliation(s)
- Su Min Kyung
- Department of Infectious Disease, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
| | - Jun Ho Lee
- Department of Infectious Disease, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
| | - Eun-Seo Lee
- Department of Infectious Disease, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
| | - Xi-Rui Xiang
- Department of Infectious Disease, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
| | - Han Sang Yoo
- Department of Infectious Disease, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea.
| |
Collapse
|
11
|
Chakkour M, Hammoud Z, Farhat S, El Roz A, Ezzeddine Z, Ghssein G. Overview of Proteus mirabilis pathogenicity and virulence. Insights into the role of metals. Front Microbiol 2024; 15:1383618. [PMID: 38646633 PMCID: PMC11026637 DOI: 10.3389/fmicb.2024.1383618] [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: 02/08/2024] [Accepted: 03/15/2024] [Indexed: 04/23/2024] Open
Abstract
Proteus mirabilis is a Gram-negative bacterium with exclusive molecular and biological features. It is a versatile pathogen acclaimed for its distinct urease production, swarming behavior, and rapid multicellular activity. Clinically, P. mirabilis is a frequent pathogen of the human urinary system where it causes urinary tract infections (UTIs) and catheter-associated urinary tract infections (CAUTIs). This review explores the epidemiology, risk factors, clinical manifestations, and treatment of P. mirabilis infections, emphasizing its association with UTIs. The bacterium's genome analysis revealed the presence of resistance genes against commonly used antibiotics, an antibiotic-resistant phenotype that poses a serious clinical challenge. Particularly, the emergence of extended-spectrum β-lactamases (ESBLs) and carbapenemases resistant P. mirabilis strains. On a molecular level, P. mirabilis possesses a wide array of virulence factors including the production of fimbriae, urease, hemolysins, metallophores, and biofilm formation. This review thoroughly tackles a substantial gap in understanding the role of metallophores in shaping the virulence factors of P. mirabilis virulence. Siderophores, iron metal chelating and transporting metallophores, particularly contribute to the complex pathogenic strategies, displaying a potential target for therapeutic intervention.
Collapse
Affiliation(s)
- Mohamed Chakkour
- Department of Biological Sciences, Wayne State University, Detroit, MI, United States
| | - Zeinab Hammoud
- Faculty of Medical Sciences, Lebanese University, Beirut, Lebanon
| | - Solay Farhat
- Faculty of Medical Sciences, Lebanese University, Beirut, Lebanon
| | - Ali El Roz
- Laboratory Sciences Department, Faculty of Public Health, Islamic University of Lebanon (IUL), Khalde, Lebanon
| | - Zeinab Ezzeddine
- Laboratory Sciences Department, Faculty of Public Health, Islamic University of Lebanon (IUL), Khalde, Lebanon
| | - Ghassan Ghssein
- Laboratory Sciences Department, Faculty of Public Health, Islamic University of Lebanon (IUL), Khalde, Lebanon
| |
Collapse
|
12
|
Zheng H, Wang C, Yu X, Zheng W, An Y, Zhang J, Zhang Y, Wang G, Qi M, Lin H, Wang F. The Role of Metabolomics and Microbiology in Urinary Tract Infection. Int J Mol Sci 2024; 25:3134. [PMID: 38542107 PMCID: PMC10969911 DOI: 10.3390/ijms25063134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Revised: 02/26/2024] [Accepted: 03/05/2024] [Indexed: 08/25/2024] Open
Abstract
One of the common illnesses that affect women's physical and mental health is urinary tract infection (UTI). The disappointing results of empirical anti-infective treatment and the lengthy time required for urine bacterial culture are two issues. Antibiotic misuse is common, especially in females who experience recurrent UTI (rUTI). This leads to a higher prevalence of antibiotic resistance in the microorganisms that cause the infection. Antibiotic therapy will face major challenges in the future, prompting clinicians to update their practices. New testing techniques are making the potential association between the urogenital microbiota and UTIs increasingly apparent. Monitoring changes in female urinary tract (UT) microbiota, as well as metabolites, may be useful in exploring newer preventive treatments for UTIs. This review focuses on advances in urogenital microbiology and organismal metabolites relevant to the identification and handling of UTIs in an attempt to provide novel methods for the identification and management of infections of the UT. Particular attention is paid to the microbiota and metabolites in the patient's urine in relation to their role in supporting host health.
Collapse
Affiliation(s)
- Haoyu Zheng
- Department of Pathogeny Biology, College of Basic Medical Sciences, Jilin University, Changchun 130021, China; (H.Z.); (C.W.); (X.Y.); (W.Z.); (Y.A.); (J.Z.); (Y.Z.); (G.W.); (M.Q.); (H.L.)
| | - Chao Wang
- Department of Pathogeny Biology, College of Basic Medical Sciences, Jilin University, Changchun 130021, China; (H.Z.); (C.W.); (X.Y.); (W.Z.); (Y.A.); (J.Z.); (Y.Z.); (G.W.); (M.Q.); (H.L.)
| | - Xiao Yu
- Department of Pathogeny Biology, College of Basic Medical Sciences, Jilin University, Changchun 130021, China; (H.Z.); (C.W.); (X.Y.); (W.Z.); (Y.A.); (J.Z.); (Y.Z.); (G.W.); (M.Q.); (H.L.)
| | - Wenxue Zheng
- Department of Pathogeny Biology, College of Basic Medical Sciences, Jilin University, Changchun 130021, China; (H.Z.); (C.W.); (X.Y.); (W.Z.); (Y.A.); (J.Z.); (Y.Z.); (G.W.); (M.Q.); (H.L.)
| | - Yiming An
- Department of Pathogeny Biology, College of Basic Medical Sciences, Jilin University, Changchun 130021, China; (H.Z.); (C.W.); (X.Y.); (W.Z.); (Y.A.); (J.Z.); (Y.Z.); (G.W.); (M.Q.); (H.L.)
| | - Jiaqi Zhang
- Department of Pathogeny Biology, College of Basic Medical Sciences, Jilin University, Changchun 130021, China; (H.Z.); (C.W.); (X.Y.); (W.Z.); (Y.A.); (J.Z.); (Y.Z.); (G.W.); (M.Q.); (H.L.)
| | - Yuhan Zhang
- Department of Pathogeny Biology, College of Basic Medical Sciences, Jilin University, Changchun 130021, China; (H.Z.); (C.W.); (X.Y.); (W.Z.); (Y.A.); (J.Z.); (Y.Z.); (G.W.); (M.Q.); (H.L.)
| | - Guoqiang Wang
- Department of Pathogeny Biology, College of Basic Medical Sciences, Jilin University, Changchun 130021, China; (H.Z.); (C.W.); (X.Y.); (W.Z.); (Y.A.); (J.Z.); (Y.Z.); (G.W.); (M.Q.); (H.L.)
| | - Mingran Qi
- Department of Pathogeny Biology, College of Basic Medical Sciences, Jilin University, Changchun 130021, China; (H.Z.); (C.W.); (X.Y.); (W.Z.); (Y.A.); (J.Z.); (Y.Z.); (G.W.); (M.Q.); (H.L.)
| | - Hongqiang Lin
- Department of Pathogeny Biology, College of Basic Medical Sciences, Jilin University, Changchun 130021, China; (H.Z.); (C.W.); (X.Y.); (W.Z.); (Y.A.); (J.Z.); (Y.Z.); (G.W.); (M.Q.); (H.L.)
| | - Fang Wang
- Department of Pathogeny Biology, College of Basic Medical Sciences, Jilin University, Changchun 130021, China; (H.Z.); (C.W.); (X.Y.); (W.Z.); (Y.A.); (J.Z.); (Y.Z.); (G.W.); (M.Q.); (H.L.)
- Key Laboratory of Pathobiology, Ministry of Education, Jilin University, Changchun 130021, China
| |
Collapse
|
13
|
Dong Z, Wu R, Liu L, Ai S, Yang J, Li Q, Fu K, Zhou Y, Fu H, Zhou Z, Liu H, Zhong Z, Qiu X, Peng G. Phage P2-71 against multi-drug resistant Proteus mirabilis: isolation, characterization, and non-antibiotic antimicrobial potential. Front Cell Infect Microbiol 2024; 14:1347173. [PMID: 38500503 PMCID: PMC10945010 DOI: 10.3389/fcimb.2024.1347173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Accepted: 02/13/2024] [Indexed: 03/20/2024] Open
Abstract
Proteus mirabilis, a prevalent urinary tract pathogen and formidable biofilm producer, especially in Catheter-Associated Urinary Tract Infection, has seen a worrying rise in multidrug-resistant (MDR) strains. This upsurge calls for innovative approaches in infection control, beyond traditional antibiotics. Our research introduces bacteriophage (phage) therapy as a novel non-antibiotic strategy to combat these drug-resistant infections. We isolated P2-71, a lytic phage derived from canine feces, demonstrating potent activity against MDR P. mirabilis strains. P2-71 showcases a notably brief 10-minute latent period and a significant burst size of 228 particles per infected bacterium, ensuring rapid bacterial clearance. The phage maintains stability over a broad temperature range of 30-50°C and within a pH spectrum of 4-11, highlighting its resilience in various environmental conditions. Our host range assessment solidifies its potential against diverse MDR P. mirabilis strains. Through killing curve analysis, P2-71's effectiveness was validated at various MOI levels against P. mirabilis 37, highlighting its versatility. We extended our research to examine P2-71's stability and bactericidal kinetics in artificial urine, affirming its potential for clinical application. A detailed genomic analysis reveals P2-71's complex genetic makeup, including genes essential for morphogenesis, lysis, and DNA modification, which are crucial for its therapeutic action. This study not only furthers the understanding of phage therapy as a promising non-antibiotic antimicrobial but also underscores its critical role in combating emerging MDR infections in both veterinary and public health contexts.
Collapse
Affiliation(s)
- Zhiyou Dong
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Ruihu Wu
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Lijuan Liu
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Shengquan Ai
- New Ruipeng Pet Healthcare Group, Chengdu, China
| | - Jinpeng Yang
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Qianlan Li
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Keyi Fu
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Yunian Zhou
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Hualin Fu
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Ziyao Zhou
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Haifeng Liu
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Zhijun Zhong
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Xianmeng Qiu
- New Ruipeng Pet Healthcare Group, Chengdu, China
| | - Guangneng Peng
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| |
Collapse
|
14
|
Elumalai R, Vishwakarma A, Balakrishnan A, Ramya M. Assessment of the growth inhibition and anti-biofilm activity of aptamer (PmA2G02) against Proteus mirabilis 1429 T. Res Microbiol 2024; 175:104105. [PMID: 37429429 DOI: 10.1016/j.resmic.2023.104105] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 06/15/2023] [Accepted: 07/01/2023] [Indexed: 07/12/2023]
Abstract
Proteus mirabilis is known to cause Catheter-associated urinary tract infections (CAUTIs), which exhibit virulence factors linked to forming biofilms. Aptamers have recently been explored as potential anti-biofilm agents. This study demonstrates the anti-biofilm activity of aptamer (PmA2G02) targeting P. mirabilis 1429T, a pathogenic bacteria known to cause Catheter-associated urinary tract infections (CAUTIs). The studied aptamer inhibited biofilm formation, swarming motility, and cell viability at a concentration of 3 μM. The study also showed that the PmA2G02 had a binding affinity towards fimbrial outer membrane usher protein (PMI1466), flagellin protein (PMI1619), and regulator of swarming behavior (rsbA), which are responsible for adhesion, motility, and quorum sensing, respectively. Crystal violet assay, SEM, and confocal imaging confirmed the effectiveness of the PmA2G02 as an anti-biofilm agent. Moreover, as verified by qPCR, the expression levels of fimD, fliC2, and rsbA were significantly reduced compared to the untreated group. This study suggests that aptamer may be a potential alternative to traditional antibiotics for the treatment of CAUTIs caused by P. mirabilis. These findings shed light on the mechanisms by which the aptamer inhibits biofilm formation.
Collapse
Affiliation(s)
- Rajalakshmi Elumalai
- Molecular Genetics Laboratory, Department of Genetic Engineering, School of Bioengineering, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur 603203, Chengalpattu, Tamil Nadu, India
| | - Archana Vishwakarma
- Molecular Genetics Laboratory, Department of Genetic Engineering, School of Bioengineering, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur 603203, Chengalpattu, Tamil Nadu, India
| | - Anandkumar Balakrishnan
- Corrosion Science and Technology Division, Metallurgy and Materials Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, India; Homi Bhabha National Institute Kalpakkam, Mumbai 400094, India
| | - Mohandass Ramya
- Molecular Genetics Laboratory, Department of Genetic Engineering, School of Bioengineering, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur 603203, Chengalpattu, Tamil Nadu, India.
| |
Collapse
|
15
|
Saikawa GIA, Guidone GHM, Noriler SA, Reis GF, de Oliveira AG, Nakazato G, Rocha SPD. Green-Synthesized Silver Nanoparticles in the Prevention of Multidrug-Resistant Proteus mirabilis Infection and Incrustation of Urinary Catheters BioAgNPs Against P. mirabilis Infection. Curr Microbiol 2024; 81:100. [PMID: 38372801 DOI: 10.1007/s00284-024-03616-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 01/10/2024] [Indexed: 02/20/2024]
Abstract
This study aimed to assess the activity of AgNPs biosynthesized by Fusarium oxysporum (bio-AgNPs) against multidrug-resistant uropathogenic Proteus mirabilis, and to assess the antibacterial activity of catheters coated with bio-AgNPs. Broth microdilution and time-kill kinetics assays were used to determine the antibacterial activity of bio-AgNPs. Catheters were coated with two (2C) and three (3C) bio-AgNPs layers using polydopamine as crosslinker. Catheters were challenged with urine inoculated with P. mirabilis to assess the anti-incrustation activity. MIC was found to be 62.5 µmol l-1, causing total loss of viability after 4 h and bio-AgNPs inhibited biofilm formation by 76.4%. Catheters 2C and 3C avoided incrustation for 13 and 20 days, respectively, and reduced biofilm formation by more than 98%, while the pristine catheter was encrusted on the first day. These results provide evidence for the use of bio-AgNPs as a potential alternative to combat of multidrug-resistant P. mirabilis infections.
Collapse
Affiliation(s)
- Gustavo Issamu Asai Saikawa
- Laboratory of Bacteriology, Department of Microbiology, Center of Biological Sciences, State University of Londrina, Rodovia Celso Garcia Cid PO-BOX 6001, Londrina, 86051-980, Brazil
| | - Gustavo Henrique Migliorini Guidone
- Laboratory of Bacteriology, Department of Microbiology, Center of Biological Sciences, State University of Londrina, Rodovia Celso Garcia Cid PO-BOX 6001, Londrina, 86051-980, Brazil
| | - Sandriele Aparecida Noriler
- Laboratory of Microbial Biotechnology, Department of Microbiology, Center of Biological Sciences, State University of Londrina, Londrina, Brazil
| | - Guilherme Fonseca Reis
- Laboratory of Microbial Biotechnology, Department of Microbiology, Center of Biological Sciences, State University of Londrina, Londrina, Brazil
| | - Admilton Gonçalves de Oliveira
- Laboratory of Microbial Biotechnology, Department of Microbiology, Center of Biological Sciences, State University of Londrina, Londrina, Brazil
- Laboratory of Electron Microscopy and Microanalysis, State University of Londrina, Londrina, Brazil
| | - Gerson Nakazato
- Laboratory of Basic and Applied Bacteriology, Department of Microbiology, Center of Biological Sciences, State University of Londrina, Londrina, Brazil
| | - Sergio Paulo Dejato Rocha
- Laboratory of Bacteriology, Department of Microbiology, Center of Biological Sciences, State University of Londrina, Rodovia Celso Garcia Cid PO-BOX 6001, Londrina, 86051-980, Brazil.
| |
Collapse
|
16
|
Tian L, Gao C, Lu J, Liao S, Gong G. Key biological processes and essential genes for Proteus mirabilis biofilm development inhibition by protocatechuic acid. Int J Food Microbiol 2024; 412:110570. [PMID: 38219343 DOI: 10.1016/j.ijfoodmicro.2024.110570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 12/22/2023] [Accepted: 01/04/2024] [Indexed: 01/16/2024]
Abstract
Proteus mirabilis is an opportunistic pathogen linked to human urinary tract infections, and is potentially present as a foodborne pathogen within poultry products, including broiler chickens. This report outlines the inhibitory impacts of protocatechuic acid (PCA) on P. mirabilis isolated from a broiler slaughterhouse in China as well as its biofilm. This investigation encompasses assays related to motility and adhesion, bacterial metabolic activity, extracellular polymer (EPS) production, and scavenging capacity. The findings demonstrated that PCA reduced biofilm formation by 61 %. Transcriptomics findings identified that PCA limited the expression of genes like PstS that promote adhesin formation, rbsA and RcsB that alter bacterial chemotaxis, lipopolysaccharide synthesis genes LpxA and EptB, and cell wall synthesis genes MurF and MrdA, and affects the Regulator of Capsule Synthesis (RCS) two-component modulation system. Weighted gene co-expression network analysis (WGCNA) was conducted to identify the core genes. Furthermore, the binding sites of PCA to cytochrome oxidases cydA and cydB, two subunits of ATP synthase atpI and atpH, and ftsZ, which regulate bacterial division, were predicted via molecular docking. Metabolome analysis determined that PCA critically influenced coenzyme A biosynthesis, nucleotide metabolism, alanine, aspartic acid, and glutamate metabolic pathways of P. mirabilis. Therefore, PCA impacts metabolism within bacteria via various pathways, limiting the levels of extracellular polymer and bacterial viability to hinder biofilm formation. Additionally, we prepared an antibacterial plastic film containing protocatechuic acid using PVA as the monomer and CNC as the reinforcing agent. We examined the mechanical and antibacterial properties of this film. When used to wrap chicken, it reduced the total number of colonies, slowed the deterioration of chicken, and maintained the freshness of chicken. In conclusion, the information outlined in this study complements our comprehension of P. mirabilis inhibition by PCA and provides clues for the reduction of foodborne infections associated with P. mirabilis.
Collapse
Affiliation(s)
- Lu Tian
- School of Food Science and Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi 710021, China.
| | - Chang Gao
- School of Food Science and Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi 710021, China
| | - Jiaxing Lu
- School of Food Science and Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi 710021, China
| | - Sichen Liao
- School of Food Science and Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi 710021, China
| | - Guoli Gong
- School of Food Science and Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi 710021, China.
| |
Collapse
|
17
|
Hafiz TA, Alghamdi GS, Alkudmani ZS, Alyami AS, AlMazyed A, Alhumaidan OS, Mubaraki MA, Alotaibi FE. Multidrug-Resistant Proteus mirabilis Infections and Clinical Outcome at Tertiary Hospital in Riyadh, Saudi Arabia. Infect Drug Resist 2024; 17:571-581. [PMID: 38375102 PMCID: PMC10875173 DOI: 10.2147/idr.s448335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Accepted: 02/02/2024] [Indexed: 02/21/2024] Open
Abstract
Background Proteus mirabilis (P. mirabilis) is known to cause various infections, most commonly urinary tract infections, and is a threat to hospitalized patients, especially in long-stay departments that utilize invasive devices. This study aims to fill the knowledge gap regarding P. mirabilis epidemiology and antimicrobial resistance in Saudi Arabia. It investigates epidemiological patterns, resistance characteristics, and clinical outcomes among P. mirabilis patients at King Fahad Medical City in Riyadh from 2019 to 2021. Methods A total of 598 P. mirabilis isolated from diverse clinical specimens, including the clinical information of 78 intensive care unit (ICU) patients, were included in the current study. The Phoenix BD instrument was used for complete identification and sensitivity testing of Proteus spp. Demographic, clinical, and outcome data were reported and compared using statistical analysis. Results Pan-drug-resistant isolates were identified in 2019 (n = 6), although multi- and extensively drug-resistant isolate frequencies were greatest among all patients in 2019. The highest susceptibility levels were observed for piperacillin-tazobactam, carbapenems, and cephalosporins antibiotics. In contrast, Cephalothin, trimethoprim-sulfamethoxazole, and ampicillin had the lowest susceptibilities. Urine infections with a positive culture of P. mirabilis were significantly higher in females and non-ICU patients (p <0.001), but respiratory infections were significantly higher in ICU patients (p <0.001). Moreover, ICU patients infected with P. mirabilis and undergoing renal dialysis have a 7.2-fold (P 0.034) higher risk of death than those not receiving dialysis. Conclusion Hospitalized patients are at risk of fatal consequences due to P. mirabilis infection. It is crucial to conduct further investigation to fully understand the severity of this issue and take necessary measures to prevent it.
Collapse
Affiliation(s)
- Taghreed A Hafiz
- Clinical Laboratory Sciences Department, College of Applied Medical Sciences, King Saud University, Riyadh, 12372, Saudi Arabia
| | - Ghadi S Alghamdi
- Clinical Laboratory Sciences Department, College of Applied Medical Sciences, King Saud University, Riyadh, 12372, Saudi Arabia
| | - Zeina S Alkudmani
- Clinical Laboratory Sciences Department, College of Applied Medical Sciences, King Saud University, Riyadh, 12372, Saudi Arabia
| | - Ahmed S Alyami
- Pathology and Clinical Laboratory Medicine, King Fahad Medical City, Riyadh, 11525, Saudi Arabia
| | - Abeer AlMazyed
- Pathology and Clinical Laboratory Medicine, King Fahad Medical City, Riyadh, 11525, Saudi Arabia
| | - Ohoud S Alhumaidan
- Clinical Laboratory Sciences Department, College of Applied Medical Sciences, King Saud University, Riyadh, 12372, Saudi Arabia
| | - Murad A Mubaraki
- Clinical Laboratory Sciences Department, College of Applied Medical Sciences, King Saud University, Riyadh, 12372, Saudi Arabia
| | - Fawzia E Alotaibi
- Pathology Department, College of Medicine, King Saud University, Riyadh, 12372, Saudi Arabia
| |
Collapse
|
18
|
Pearson MM, Shea AE, Pahil S, Smith SN, Forsyth VS, Mobley HLT. Organ agar serves as physiologically relevant alternative for in vivo bacterial colonization. Infect Immun 2023; 91:e0035523. [PMID: 37850748 PMCID: PMC10652904 DOI: 10.1128/iai.00355-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Accepted: 09/15/2023] [Indexed: 10/19/2023] Open
Abstract
Animal models for host-microbial interactions have proven valuable, yielding physiologically relevant data that may be otherwise difficult to obtain. Unfortunately, such models are lacking or nonexistent for many microbes. Here, we introduce organ agar, a straightforward method to enable the screening of large mutant libraries while avoiding physiological bottlenecks. We demonstrate that growth defects on organ agar were translatable to bacterial colonization deficiencies in a murine model. Specifically, we present a urinary tract infection agar model to interrogate an ordered library of Proteus mirabilis transposon mutants, with accurate prediction of bacterial genes critical for host colonization. Thus, we demonstrate the ability of ex vivo organ agar to reproduce in vivo deficiencies. Organ agar was also useful for identifying previously unknown links between biosynthetic genes and swarming motility. This work provides a readily adoptable technique that is economical and uses substantially fewer animals. We anticipate this method will be useful for a wide variety of microorganisms, both pathogenic and commensal, in a diverse range of model host species.
Collapse
Affiliation(s)
- Melanie M. Pearson
- Department of Microbiology and Immunology, University of Michigan, Ann Arbor, Michigan, USA
| | - Allyson E. Shea
- Department of Microbiology and Immunology, University of Michigan, Ann Arbor, Michigan, USA
| | - Sapna Pahil
- Department of Microbiology and Immunology, University of Michigan, Ann Arbor, Michigan, USA
| | - Sara N. Smith
- Department of Microbiology and Immunology, University of Michigan, Ann Arbor, Michigan, USA
| | - Valerie S. Forsyth
- Department of Microbiology and Immunology, University of Michigan, Ann Arbor, Michigan, USA
| | - Harry L. T. Mobley
- Department of Microbiology and Immunology, University of Michigan, Ann Arbor, Michigan, USA
| |
Collapse
|
19
|
Palusiak A, Turska-Szewczuk A, Drzewiecka D. Antigenic and Structural Properties of the Lipopolysaccharide of the Uropathogenic Proteus mirabilis Dm55 Strain Classified to a New O85 Proteus Serogroup. Int J Mol Sci 2023; 24:16424. [PMID: 38003613 PMCID: PMC10671486 DOI: 10.3390/ijms242216424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 11/08/2023] [Accepted: 11/13/2023] [Indexed: 11/26/2023] Open
Abstract
The aim of the study was the serological and structural characterization of the lipopolysaccharide (LPS) O antigen from P. mirabilis Dm55 coming from the urine of a patient from Lodz. The Dm55 LPS was recognized in ELISA only by the O54 antiserum, suggesting a serological distinction of the Dm55 O antigen from all the 84 Proteus LPS serotypes described. The obtained polyclonal rabbit serum against P. mirabilis Dm55 reacted in ELISA and Western blotting with a few LPSs (including O54), but the reactions were weaker than those observed in the homologous system. The LPS of P. mirabilis Dm55 was subjected to mild acid hydrolysis, and the obtained high-molecular-mass O polysaccharide was chemically studied using sugar and methylation analyses, mass spectrometry, and 1H and 13C NMR spectroscopy, including 1H,1H NOESY, and 1H,13C HMBC experiments. The Dm55 O unit is a branched three-saccharide, and its linear fragment contains α-GalpNAc and β-Galp, whereas α-GlcpNAc occupies a terminal position. The Dm55 OPS shares a disaccharide epitope with the Proteus O54 antigen. Due to the structural differences of the studied O antigen from the other described Proteus O polysaccharides, we propose to classify the P. mirabilis Dm55 strain to a new Proteus O85 serogroup.
Collapse
Affiliation(s)
- Agata Palusiak
- Department of Biology of Bacteria, Faculty of Biology and Environmental Protection, University of Lodz, Banacha 12/16, 90-237 Lodz, Poland;
| | - Anna Turska-Szewczuk
- Department of Genetics and Microbiology, Institute of Biological Sciences, Maria Curie-Sklodowska University, Akademicka 19, 20-033 Lublin, Poland;
| | - Dominika Drzewiecka
- Department of Biology of Bacteria, Faculty of Biology and Environmental Protection, University of Lodz, Banacha 12/16, 90-237 Lodz, Poland;
| |
Collapse
|
20
|
Manoharan A, Farrell J, Aldilla VR, Whiteley G, Kriel E, Glasbey T, Kumar N, Moore KH, Manos J, Das T. N-acetylcysteine prevents catheter occlusion and inflammation in catheter associated-urinary tract infections by suppressing urease activity. Front Cell Infect Microbiol 2023; 13:1216798. [PMID: 37965267 PMCID: PMC10641931 DOI: 10.3389/fcimb.2023.1216798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Accepted: 09/19/2023] [Indexed: 11/16/2023] Open
Abstract
Introduction Proteus mirabilis is a key pathobiont in catheter-associated urinary tract infections (CA-UTIs), which is well known to form crystalline biofilms that occlude catheters. Urease activity alkylates urine through the release of ammonia, consequentially resulting in higher levels of Mg2+ and Ca2+ and formation of crystals. In this study, we showed that N-acetyl cysteine (NAC), a thiol antioxidant, is a potent urease inhibitor that prevents crystalline biofilm formation. Methods To quantify urease activity, Berthelot's method was done on bacterial extracts treated with NAC. We also used an in vitro catheterised glass bladder model to study the effect of NAC treatment on catheter occlusion and biofilm encrustation in P. mirabilis infections. Inductively-coupled plasma mass spectrometry (ICP-MS) was performed on catheter samples to decipher elemental profiles. Results NAC inhibits urease activity of clinical P. mirabilis isolates at concentrations as low as 1 mM, independent of bacterial killing. The study also showed that NAC is bacteriostatic on P. mirabilis, and inhibited biofilm formation and catheter occlusion in an in vitro. A significant 4-8log10 reduction in viable bacteria was observed in catheters infected in this model. Additionally, biofilms in NAC treated catheters displayed a depletion of calcium, magnesium, or phosphates (>10 fold reduction), thus confirming the absence of any urease activity in the presence of NAC. Interestingly, we also showed that not only is NAC anti-inflammatory in bladder epithelial cells (BECs), but that it mutes its inflammatory response to urease and P. mirabilis infection by reducing the production of IL-6, IL-8 and IL-1b. Discussion Using biochemical, microbiological and immunological techniques, this study displays the functionality of NAC in preventing catheter occlusion by inhibiting urease activity. The study also highlights NAC as a strong anti-inflammatory antibiofilm agent that can target both bacterial and host factors in the treatment of CA-UTIs.
Collapse
Affiliation(s)
- Arthika Manoharan
- Infection, Immunity and Inflammation Theme, School of Medical Sciences, Charles Perkins Centre, The University of Sydney, Sydney, NSW, Australia
- Sydney Institute of Infectious Disease, The University of Sydney, Sydney, NSW, Australia
| | - Jessica Farrell
- Infection, Immunity and Inflammation Theme, School of Medical Sciences, Charles Perkins Centre, The University of Sydney, Sydney, NSW, Australia
- Whiteley Corporation, Tomago, NSW, Australia
| | - Vina R. Aldilla
- School of Chemistry, The University of New South Wales, Sydney, NSW, Australia
| | - Greg Whiteley
- Infection, Immunity and Inflammation Theme, School of Medical Sciences, Charles Perkins Centre, The University of Sydney, Sydney, NSW, Australia
- Whiteley Corporation, Tomago, NSW, Australia
- School of Medicine, Western Sydney University, NSW, Australia
| | - Erik Kriel
- Whiteley Corporation, Tomago, NSW, Australia
| | | | - Naresh Kumar
- School of Chemistry, The University of New South Wales, Sydney, NSW, Australia
| | - Kate H. Moore
- Department of Urogynaecology, St George Hospital, University of New South Wales, Sydney, NSW, Australia
| | - Jim Manos
- Infection, Immunity and Inflammation Theme, School of Medical Sciences, Charles Perkins Centre, The University of Sydney, Sydney, NSW, Australia
- Sydney Institute of Infectious Disease, The University of Sydney, Sydney, NSW, Australia
| | - Theerthankar Das
- Infection, Immunity and Inflammation Theme, School of Medical Sciences, Charles Perkins Centre, The University of Sydney, Sydney, NSW, Australia
- Sydney Institute of Infectious Disease, The University of Sydney, Sydney, NSW, Australia
| |
Collapse
|
21
|
Biondo C. New Insights into the Pathogenesis and Treatment of Urinary Tract Infections. Pathogens 2023; 12:1213. [PMID: 37887729 PMCID: PMC10610534 DOI: 10.3390/pathogens12101213] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Accepted: 09/25/2023] [Indexed: 10/28/2023] Open
Abstract
About 150 million people around the world experience urinary tract infections (UTI) every year, with adult women 30 times more likely to develop a UTI than men [...].
Collapse
Affiliation(s)
- Carmelo Biondo
- Department of Human Pathology, University of Messina, Via C. Valeria n.1, 98125 Messina, Italy
| |
Collapse
|
22
|
Mataseje LF, Pitout J, Croxen M, Mulvey MR, Dingle TC. Three separate acquisitions of bla NDM-1 in three different bacterial species from a single patient. Eur J Clin Microbiol Infect Dis 2023; 42:1275-1280. [PMID: 37688673 PMCID: PMC10511597 DOI: 10.1007/s10096-023-04651-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Accepted: 08/07/2023] [Indexed: 09/11/2023]
Abstract
To investigate the acquisition and relatedness of New Delhi Metallo-beta-lactamase among multiple separate species from one patient. Five isolates from three species (Pseudomonas aeruginosa; Pa, Acinetobacter baumannii; Ab and Proteus mirabilis; Pm) suspected of harbouring a carbapenemase were investigated by phenotype (antimicrobial susceptibilities) and whole genome sequencing. Epidemiological data was collected on this patient. Three different carbapenemase genes were detected; blaVIM-1 (Pa; ST773), blaOXA-23 (Ab, ST499) and blaNDM-1 identified in all isolates. NDM regions were found chromosomally integrated in all isolates. Data showed no evidence of NDM-1 transfer within this patient suggesting the enzyme was acquired in three separate events.
Collapse
Affiliation(s)
- L F Mataseje
- National Microbiology laboratory, Winnipeg, MB, Canada
| | - J Pitout
- Alberta Precision Laboratories, Public Health Laboratory, 3030 Hospital Drive N.W, Calgary, AB, T2N 4W4, Canada
- University of Calgary, Calgary, AB, Canada
- University of Pretoria, Pretoria, Gauteng, South Africa
| | - M Croxen
- Alberta Precision Laboratories, Public Health Laboratory, 3030 Hospital Drive N.W, Calgary, AB, T2N 4W4, Canada
- University of Alberta, Edmonton, AB, Canada
- Li Ka Shing Institute of Virology, University of Alberta, Edmonton, AB, Canada
- Women and Children's Health Research Institute, University of Alberta, Edmonton, AB, Canada
| | - M R Mulvey
- National Microbiology laboratory, Winnipeg, MB, Canada
| | - T C Dingle
- Alberta Precision Laboratories, Public Health Laboratory, 3030 Hospital Drive N.W, Calgary, AB, T2N 4W4, Canada.
- University of Calgary, Calgary, AB, Canada.
| |
Collapse
|
23
|
Periferakis AT, Periferakis A, Periferakis K, Caruntu A, Badarau IA, Savulescu-Fiedler I, Scheau C, Caruntu C. Antimicrobial Properties of Capsaicin: Available Data and Future Research Perspectives. Nutrients 2023; 15:4097. [PMID: 37836381 PMCID: PMC10574431 DOI: 10.3390/nu15194097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2023] [Revised: 09/13/2023] [Accepted: 09/20/2023] [Indexed: 10/15/2023] Open
Abstract
Capsaicin is a phytochemical derived from plants of the genus Capsicum and subject of intensive phytochemical research due to its numerous physiological and therapeutical effects, including its important antimicrobial properties. Depending on the concentration and the strain of the bacterium, capsaicin can exert either bacteriostatic or even bactericidal effects against a wide range of both Gram-positive and Gram-negative bacteria, while in certain cases it can reduce their pathogenicity by a variety of mechanisms such as mitigating the release of toxins or inhibiting biofilm formation. Likewise, capsaicin has been shown to be effective against fungal pathogens, particularly Candida spp., where it once again interferes with biofilm formation. The parasites Toxoplasma gondi and Trypanosoma cruzi have been found to be susceptible to the action of this compound too while there are also viruses whose invasiveness is significantly dampened by it. Among the most encouraging findings are the prospects for future development, especially using new formulations and drug delivery mechanisms. Finally, the influence of capsaicin in somatostatin and substance P secretion and action, offers an interesting array of possibilities given that these physiologically secreted compounds modulate inflammation and immune response to a significant extent.
Collapse
Affiliation(s)
- Aristodemos-Theodoros Periferakis
- Department of Physiology, The “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania
- Elkyda, Research & Education Centre of Charismatheia, 17675 Athens, Greece
| | - Argyrios Periferakis
- Department of Physiology, The “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania
- Elkyda, Research & Education Centre of Charismatheia, 17675 Athens, Greece
- Akadimia of Ancient Greek and Traditional Chinese Medicine, 16675 Athens, Greece
| | - Konstantinos Periferakis
- Akadimia of Ancient Greek and Traditional Chinese Medicine, 16675 Athens, Greece
- Pan-Hellenic Organization of Educational Programs (P.O.E.P), 17236 Athens, Greece
| | - Ana Caruntu
- Department of Oral and Maxillofacial Surgery, “Carol Davila” Central Military Emergency Hospital, 010825 Bucharest, Romania
- Department of Oral and Maxillofacial Surgery, Faculty of Dental Medicine, “Titu Maiorescu” University, 031593 Bucharest, Romania
| | - Ioana Anca Badarau
- Department of Physiology, The “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania
| | - Ilinca Savulescu-Fiedler
- Department of Internal Medicine and Cardiology, Coltea Clinical Hospital, 030167 Bucharest, Romania
- Department of Internal Medicine, The “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania
| | - Cristian Scheau
- Department of Physiology, The “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania
- Department of Radiology and Medical Imaging, “Foisor” Clinical Hospital of Orthopaedics, Traumatology and Osteoarticular TB, 021382 Bucharest, Romania
| | - Constantin Caruntu
- Department of Physiology, The “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania
- Department of Dermatology, ‘Prof. N.C. Paulescu’ National Institute of Diabetes, Nutrition and Metabolic Diseases, 011233 Bucharest, Romania
| |
Collapse
|
24
|
Fusco A, Savio V, Chiaromonte A, Alfano A, D’Ambrosio S, Cimini D, Donnarumma G. Evaluation of Different Activity of Lactobacillus spp. against Two Proteus mirabilis Isolated Clinical Strains in Different Anatomical Sites In Vitro: An Explorative Study to Improve the Therapeutic Approach. Microorganisms 2023; 11:2201. [PMID: 37764044 PMCID: PMC10534642 DOI: 10.3390/microorganisms11092201] [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: 07/30/2023] [Revised: 08/20/2023] [Accepted: 08/29/2023] [Indexed: 09/29/2023] Open
Abstract
Urinary tract infections (UTIs) and catheter-associated UTIs (CAUTIs) are the principal hospital-acquired infections. Between these, bacterial prostatitis is believed to be the leading cause of recurrent UTIs in men under 50 years of age and is often unresponsive to antibiotic treatment. Proteus mirabilis is more commonly associated with UTIs in these abnormalities, especially in patients undergoing catheterization. Lactobacillus spp. are an important component of the human microbiota and occur in large quantities in foods. Probiotics are proposed as an alternative to antibiotic therapy in the treatment of urinary tract infections. In addition to their ability to produce antimicrobial metabolites, they have immunomodulatory activity and do not cause side effects. For this reason, the combination of probiotic microorganisms and conventional drugs was considered. The aim of this work was to select the most active Lactobacillus strains against two clinical isolates of P. mirabilis on bladder and prostatic epithelium, potentially exploitable to improve the clinical management of UTIs.
Collapse
Affiliation(s)
- Alessandra Fusco
- Department of Experimental Medicine, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy; (V.S.); (A.C.); (A.A.); (D.C.)
| | | | | | | | | | | | - Giovanna Donnarumma
- Department of Experimental Medicine, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy; (V.S.); (A.C.); (A.A.); (D.C.)
| |
Collapse
|
25
|
Li Y, Yin M, Fang C, Fu Y, Dai X, Zeng W, Zhang L. Genetic analysis of resistance and virulence characteristics of clinical multidrug-resistant Proteus mirabilis isolates. Front Cell Infect Microbiol 2023; 13:1229194. [PMID: 37637463 PMCID: PMC10457174 DOI: 10.3389/fcimb.2023.1229194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Accepted: 07/24/2023] [Indexed: 08/29/2023] Open
Abstract
Objective Proteus mirabilis is the one of most important pathogens of catheter-associated urinary tract infections. The emergence of multidrug-resistant (MDR) P. mirabilis severely limits antibiotic treatments, which poses a public health risk. This study aims to investigate the resistance characteristics and virulence potential for a collection of P. mirabilis clinical isolates. Methods and results Antibiotic susceptibility testing revealed fourteen MDR strains, which showed high resistance to most β-lactams and trimethoprim/sulfamethoxazole, and a lesser extent to quinolones. All the MDR strains were sensitive to carbapenems (except imipenem), ceftazidime, and amikacin, and most of them were also sensitive to aminoglycosides. The obtained MDR isolates were sequenced using an Illumina HiSeq. The core genome-based phylogenetic tree reveals the high genetic diversity of these MDR P. mirabilis isolates and highlights the possibility of clonal spread of them across China. Mobile genetic elements SXT/R391 ICEs were commonly (10/14) detected in these MDR P. mirabilis strains, whereas the presence of resistance island PmGRI1 and plasmid was sporadic. All ICEs except for ICEPmiChn31006 carried abundant antimicrobial resistance genes (ARGs) in the HS4 region, including the extended-spectrum β-lactamase (ESBL) gene blaCTX-M-65. ICEPmiChn31006 contained the sole ARG blaCMY-2 and was nearly identical to the global epidemic ICEPmiJpn1. The findings highlight the important roles of ICEs in mediating the spread of ARGs in P. mirabilis strains. Additionally, these MDR P. mirabilis strains have great virulence potential as they exhibited significant virulence-related phenotypes including strong crystalline biofilm, hemolysis, urease production, and robust swarming motility, and harbored abundant virulence genes. Conclusion In conclusion, the prevalence of MDR P. mirabilis with high virulence potential poses an urgent threat to public health. Intensive monitoring is needed to reduce the incidence of infections by MDR P. mirabilis.
Collapse
Affiliation(s)
- Ying Li
- The School of Basic Medical Science and Public Center of Experimental Technology, Southwest Medical University, Luzhou, Sichuan, China
| | - Ming Yin
- The School of Basic Medical Science and Public Center of Experimental Technology, Southwest Medical University, Luzhou, Sichuan, China
| | - Chengju Fang
- The School of Basic Medical Science and Public Center of Experimental Technology, Southwest Medical University, Luzhou, Sichuan, China
| | - Yu Fu
- The School of Basic Medical Science and Public Center of Experimental Technology, Southwest Medical University, Luzhou, Sichuan, China
| | - Xiaoyi Dai
- The School of Basic Medical Science and Public Center of Experimental Technology, Southwest Medical University, Luzhou, Sichuan, China
| | - Wei Zeng
- Department of Clinical Laboratory, The Hejiang People’s hospital, Luzhou, Sichuan, China
| | - Luhua Zhang
- The School of Basic Medical Science and Public Center of Experimental Technology, Southwest Medical University, Luzhou, Sichuan, China
| |
Collapse
|
26
|
Chalmers G, Anderson REV, Murray R, Topp E, Boerlin P. Characterization of Proteus mirabilis and associated plasmids isolated from anaerobic dairy cattle manure digesters. PLoS One 2023; 18:e0289703. [PMID: 37561682 PMCID: PMC10414651 DOI: 10.1371/journal.pone.0289703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Accepted: 07/24/2023] [Indexed: 08/12/2023] Open
Abstract
Proteus mirabilis is an opportunistic pathogen associated with a variety of human infections, including urinary tract infections. The prevalence of P. mirabilis in foods of animal origin and in the manure by-products created in animal production is not well documented. Further, the prevalence and persistence of extended-spectrum cephalosporin (ESC) resistant P. mirabilis is largely unknown. In this study, we characterized ESC-resistant P. mirabilis recovered from various stages of dairy manure anaerobic digestion. Isolates were screened by PCR for blaCTX-M, blaCMY and blaSHV, and antimicrobial susceptibility testing was performed. Fifty-six P. mirabilis carrying CTX-M were sequenced with short and long read sequencing technologies, and the assembled chromosomes and plasmids were compared. ESC-resistant Proteus was found in four of the six manure digesters, an indication that not all digesters were colonized with resistant strains. Both CTX-M-1 and CTX-M-15 plasmids were found in P. mirabilis isolates. Transfer of plasmid DNA by conjugation was also explored, with ESC-resistance plasmids able to transfer to Escherichia coli at high frequency. We concluded that P. mirabilis can harbour and transfer ESC-resistance genes and plasmids, and may be an overlooked reservoir of antimicrobial resistance.
Collapse
Affiliation(s)
- Gabhan Chalmers
- Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
| | - Rebecca E. V. Anderson
- Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
| | - Roger Murray
- London Research and Development Centre, Agriculture and Agri-Food Canada, London, Ontario, Canada
| | - Edward Topp
- London Research and Development Centre, Agriculture and Agri-Food Canada, London, Ontario, Canada
| | - Patrick Boerlin
- Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
| |
Collapse
|
27
|
Popović MB, Medić DD, Velicki RS, Jovanović Galović AI. Purple Urine Bag Syndrome in a Home-Dwelling Elderly Female with Lumbar Compression Fracture: A Case Report. Healthcare (Basel) 2023; 11:2251. [PMID: 37628449 PMCID: PMC10454558 DOI: 10.3390/healthcare11162251] [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: 06/29/2023] [Revised: 08/04/2023] [Accepted: 08/07/2023] [Indexed: 08/27/2023] Open
Abstract
Purple urine bag syndrome (PUBS) is an uncommon, but usually benign, underrecognized clinical condition with the distressing presentation of purple, blue or reddish discoloration of a patient's catheter bag and tubing in the setting of catheter-associated urinary tract infections (UTIs). PUBS is the result of the complex metabolic pathway of the dietary essential amino acid tryptophan. Its urinary metabolite, indoxyl sulfate, is converted into red and blue byproducts (indirubin and indigo) in the presence of the bacterial enzymes indoxyl sulfatase and phosphatase. The typical predisposing factors are numerous and include the following: female gender, advanced age, long-term catheterization and immobilization, constipation, institutionalization, dementia, increased dietary intake of tryptophan, chronic kidney disease, alkaline urine, and spinal cord injury (SCI). Here, we present a case of PUBS in a home-dwelling elderly female patient with a history of long-term immobility after a pathological spinal fracture, long-term catheterization, constipation, and malignant disease in remission. Urine culture was positive for Proteus mirabilis. This state can be alarming to both patients and physicians, even if the patient is asymptomatic. Healthcare professionals and caregivers need to be aware of this unusual syndrome as an indicator of bacteriuria in order to initiate proper diagnostics and treatment.
Collapse
Affiliation(s)
- Milka B. Popović
- Department of Hygiene, Faculty of Medicine, University of Novi Sad, Hajduk Veljkova 3, 21000 Novi Sad, Serbia;
- Center for Hygiene and Human Ecology, Institute of Public Health of Vojvodina, Futoška 121, 21000 Novi Sad, Serbia
| | - Deana D. Medić
- Department of Microbiology, Faculty of Medicine, University of Novi Sad, Hajduk Veljkova 3, 21000 Novi Sad, Serbia;
- Center for Microbiology, Institute of Public Health of Vojvodina, Futoška 121, 21000 Novi Sad, Serbia
| | - Radmila S. Velicki
- Department of Hygiene, Faculty of Medicine, University of Novi Sad, Hajduk Veljkova 3, 21000 Novi Sad, Serbia;
- Center for Hygiene and Human Ecology, Institute of Public Health of Vojvodina, Futoška 121, 21000 Novi Sad, Serbia
| | | |
Collapse
|
28
|
Grahl MVC, Andrade BDS, Perin APA, Neves GA, Duarte LDS, Uberti AF, Hohl KS, Follmer C, Carlini CR. Could the Urease of the Gut Bacterium Proteus mirabilis Play a Role in the Altered Gut-Brain Talk Associated with Parkinson's Disease? Microorganisms 2023; 11:2042. [PMID: 37630602 PMCID: PMC10459573 DOI: 10.3390/microorganisms11082042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 08/01/2023] [Accepted: 08/06/2023] [Indexed: 08/27/2023] Open
Abstract
Intestinal dysbiosis seems to play a role in neurodegenerative pathologies. Parkinson's disease (PD) patients have an altered gut microbiota. Moreover, mice treated orally with the gut microbe Proteus mirabilis developed Parkinson's-like symptoms. Here, the possible involvement of P. mirabilis urease (PMU) and its B subunit (PmUreβ) in the pathogenesis of PD was assessed. Purified proteins were given to mice intraperitoneally (20 μg/animal/day) for one week. Behavioral tests were conducted, and brain homogenates of the treated animals were subjected to immunoassays. After treatment with PMU, the levels of TNF-α and IL-1β were measured in Caco2 cells and cellular permeability was assayed in Hek 293. The proteins were incubated in vitro with α-synuclein and examined via transmission electron microscopy. Our results showed that PMU treatment induced depressive-like behavior in mice. No motor deficits were observed. The brain homogenates had an increased content of caspase-9, while the levels of α-synuclein and tyrosine hydroxylase decreased. PMU increased the pro-inflammatory cytokines and altered the cellular permeability in cultured cells. The urease, but not the PmUreβ, altered the morphology of α-synuclein aggregates in vitro, forming fragmented aggregates. We concluded that PMU promotes pro-inflammatory effects in cultured cells. In vivo, PMU induces neuroinflammation and a depressive-like phenotype compatible with the first stages of PD development.
Collapse
Affiliation(s)
- Matheus V. C. Grahl
- Graduate Program in Medicine and Health Sciences and Brain Institute, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre 90610-000, RS, Brazil; (M.V.C.G.); (A.F.U.)
- School of Health Sciences, University Center Ritter dos Reis, Porto Alegre 90840-440, RS, Brazil
| | - Brenda da Silva Andrade
- Laboratory of Molecular Pharmacology, Institute of Biomedical Sciences, Health Sciences Center, Federal University of Rio de Janeiro, Rio de Janeiro 21944-590, RJ, Brazil; (B.d.S.A.); (G.A.N.); (L.d.S.D.)
| | - Ana Paula A. Perin
- Graduate Program in Cellular and Molecular Biology, Center of Biotechnology, Federal University of Rio Grande do Sul, Porto Alegre 91501-970, RS, Brazil;
| | - Gilda A. Neves
- Laboratory of Molecular Pharmacology, Institute of Biomedical Sciences, Health Sciences Center, Federal University of Rio de Janeiro, Rio de Janeiro 21944-590, RJ, Brazil; (B.d.S.A.); (G.A.N.); (L.d.S.D.)
| | - Laura de Souza Duarte
- Laboratory of Molecular Pharmacology, Institute of Biomedical Sciences, Health Sciences Center, Federal University of Rio de Janeiro, Rio de Janeiro 21944-590, RJ, Brazil; (B.d.S.A.); (G.A.N.); (L.d.S.D.)
| | - Augusto Frantz Uberti
- Graduate Program in Medicine and Health Sciences and Brain Institute, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre 90610-000, RS, Brazil; (M.V.C.G.); (A.F.U.)
| | - Kelvin Siqueira Hohl
- Graduate Program in Biological Sciences—Biochemistry, Federal University of Rio Grande do Sul, Porto Alegre 90035-003, RS, Brazil;
| | - Cristian Follmer
- Laboratory of Biological Chemistry of Neurodegenerative Disorders, Institute of Chemistry, Department of Physical-Chemistry, Federal University of Rio de Janeiro, Rio de Janeiro 21941-909, RJ, Brazil;
| | - Celia Regina Carlini
- Department of Biochemistry, Federal University of Rio Grande do Sul, Porto Alegre 90035-003, RS, Brazil
- National Institute of Science and Technology in Brain Diseases, Excitotoxity and Neuroprotection (INCT-EN), Porto Alegre 90035-003, RS, Brazil
| |
Collapse
|
29
|
Anand Singh T, Nongthombam G, Goksen G, Singh HB, Rajauria G, Kumar Sarangi P. Hawaijar - An ethnic vegan fermented soybean food of Manipur, India: A comprehensive review. Food Res Int 2023; 170:112983. [PMID: 37316061 DOI: 10.1016/j.foodres.2023.112983] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2023] [Revised: 04/26/2023] [Accepted: 05/15/2023] [Indexed: 06/16/2023]
Abstract
Hawaijar, ethnic vegan fermented soybean food of Manipur, India is culturally and gastronomically important indigenously produced food. It is alkaline, sticky, mucilaginous and slightly pungent and bears similar properties with many fermented soybean foods of Southeast Asia like natto of Japan, douchi of China, thua nao of Thailand, choongkook jang of Korea. The functional microorganism is Bacillus and has numerous health benefits like fibrinolytic enzyme, antioxidant, antidiabetic, and ACE inhibitory activities. It is also very rich in nutrients but unscrupulous production method and sale lead to food safety issues. Huge potential pathogen population upto the level of 107-10 cfu/g Bacillus cereus and Proteus mirabilis were detected. Recent studies revealed presence of enterotoxic and urease gene in microorganisms originated from hawaijar. Improved and regulated food chain will result in hygienic and safe hawaijar. It has scope for functional food and nutraceutical global market and hold potential to provide employment to enhance the overall socioeconomic status of the region. Scientific production of fermented soybean over the traditional methods is summarized in this paper along with food safety and health benefits. Microbiological aspects on fermented soybean along with nutritive values are critically explained inside the paper.
Collapse
Affiliation(s)
| | | | - Gulden Goksen
- Department of Food Technology, Vocational School of Technical Sciences, Mersin Tarsus Organized Industrial Zone, Tarsus University, 33100 Mersin, Turkey
| | - Harikesh B Singh
- Department of Biotechnology, GLA University, Mathura 281406, Uttar Pradesh, India
| | - Gaurav Rajauria
- Circular Bioeconomy Research Group, Shannon Applied Biotechnology Centre, Munster Technological University, Tralee V92CX88, Ireland
| | | |
Collapse
|
30
|
Gmiter D, Pacak I, Nawrot S, Czerwonka G, Kaca W. Genomes comparison of two Proteus mirabilis clones showing varied swarming ability. Mol Biol Rep 2023; 50:5817-5826. [PMID: 37219671 PMCID: PMC10290045 DOI: 10.1007/s11033-023-08518-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Accepted: 05/10/2023] [Indexed: 05/24/2023]
Abstract
BACKGROUND Proteus mirabilis is a Gram-negative bacteria most noted for its involvement with catheter-associated urinary tract infections. It is also known for its multicellular migration over solid surfaces, referred to as 'swarming motility'. Here we analyzed the genomic sequences of two P. mirabilis isolates, designated K38 and K39, which exhibit varied swarming ability. METHODS AND RESULTS The isolates genomes were sequenced using Illumina NextSeq sequencer, resulting in about 3.94 Mbp, with a GC content of 38.6%, genomes. Genomes were subjected for in silico comparative investigation. We revealed that, despite a difference in swarming motility, the isolates showed high genomic relatedness (up to 100% ANI similarity), suggesting that one of the isolates probably originated from the other. CONCLUSIONS The genomic sequences will allow us to investigate the mechanism driving this intriguing phenotypic heterogeneity between closely related P. mirabilis isolates. Phenotypic heterogeneity is an adaptive strategy of bacterial cells to several environmental pressures. It is also an important factor related to their pathogenesis. Therefore, the availability of these genomic sequences will facilitate studies that focus on the host-pathogen interactions during catheter-associated urinary tract infections.
Collapse
Affiliation(s)
- Dawid Gmiter
- Department of Microbiology, Institute of Biology, Faculty of Natural Sciences, Jan Kochanowski University in Kielce, Kielce, Poland.
| | - Ilona Pacak
- Department of Microbiology, Institute of Biology, Faculty of Natural Sciences, Jan Kochanowski University in Kielce, Kielce, Poland
| | - Sylwia Nawrot
- Department of Microbiology, Institute of Biology, Faculty of Natural Sciences, Jan Kochanowski University in Kielce, Kielce, Poland
| | - Grzegorz Czerwonka
- Department of Microbiology, Institute of Biology, Faculty of Natural Sciences, Jan Kochanowski University in Kielce, Kielce, Poland
| | - Wieslaw Kaca
- Department of Microbiology, Institute of Biology, Faculty of Natural Sciences, Jan Kochanowski University in Kielce, Kielce, Poland
| |
Collapse
|
31
|
Scavone P, Iribarnegaray V, González MJ, Navarro N, Caneles-Huerta N, Jara-Wilde J, Härtel S, Zunino P. Role of Proteus mirabilis flagella in biofilm formation. Rev Argent Microbiol 2023; 55:226-234. [PMID: 37076397 DOI: 10.1016/j.ram.2023.01.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 11/03/2022] [Accepted: 01/25/2023] [Indexed: 04/21/2023] Open
Abstract
Proteus mirabilis(P. mirabilis) is a common etiological agent of urinary tract infections, particularly those associated with catheterization. P. mirabilis efficiently forms biofilms on different surfaces and shows a multicellular behavior called 'swarming', mediated by flagella. To date, the role of flagella in P. mirabilis biofilm formation has been under debate. In this study, we assessed the role of P. mirabilis flagella in biofilm formation using an isogenic allelic replacement mutant unable to express flagellin. Different approaches were used, such as the evaluation of cell surface hydrophobicity, bacterial motility and migration across catheter sections, measurements of biofilm biomass and biofilm dynamics by immunofluorescence and confocal microscopy in static and flow models. Our findings indicate that P. mirabilis flagella play a role in biofilm formation, although their lack does not completely avoid biofilm generation. Our data suggest that impairment of flagellar function can contribute to biofilm prevention in the context of strategies focused on particular bacterial targets.
Collapse
Affiliation(s)
- Paola Scavone
- Department of Microbiology, Instituto de Investigaciones Biológicas Clemente Estable, Montevideo, Uruguay
| | - Victoria Iribarnegaray
- Department of Microbiology, Instituto de Investigaciones Biológicas Clemente Estable, Montevideo, Uruguay; Department of Pathobiology, Facultad de Veterinaria, Universidad de la República, Montevideo, Uruguay
| | - María José González
- Department of Microbiology, Instituto de Investigaciones Biológicas Clemente Estable, Montevideo, Uruguay
| | - Nicolás Navarro
- Department of Microbiology, Instituto de Investigaciones Biológicas Clemente Estable, Montevideo, Uruguay
| | - Nicole Caneles-Huerta
- Laboratory for Scientific Image Processing (SCIAN-Lab), Biomedical Neuroscience Institute (BNI), Institute of Biomedical Sciences (ICBM), Faculty of Medicine, University of Chile, Santiago, Chile
| | - Jorge Jara-Wilde
- Laboratory for Scientific Image Processing (SCIAN-Lab), Biomedical Neuroscience Institute (BNI), Institute of Biomedical Sciences (ICBM), Faculty of Medicine, University of Chile, Santiago, Chile
| | - Steffen Härtel
- Laboratory for Scientific Image Processing (SCIAN-Lab), Biomedical Neuroscience Institute (BNI), Institute of Biomedical Sciences (ICBM), Faculty of Medicine, University of Chile, Santiago, Chile
| | - Pablo Zunino
- Department of Microbiology, Instituto de Investigaciones Biológicas Clemente Estable, Montevideo, Uruguay.
| |
Collapse
|
32
|
Doshi A, Shaw M, Tonea R, Moon S, Minyety R, Doshi A, Laine A, Guo J, Danino T. Engineered bacterial swarm patterns as spatial records of environmental inputs. Nat Chem Biol 2023; 19:878-886. [PMID: 37142806 DOI: 10.1038/s41589-023-01325-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Accepted: 04/06/2023] [Indexed: 05/06/2023]
Abstract
A diverse array of bacteria species naturally self-organize into durable macroscale patterns on solid surfaces via swarming motility-a highly coordinated and rapid movement of bacteria powered by flagella. Engineering swarming is an untapped opportunity to increase the scale and robustness of coordinated synthetic microbial systems. Here we engineer Proteus mirabilis, which natively forms centimeter-scale bullseye swarm patterns, to 'write' external inputs into visible spatial records. Specifically, we engineer tunable expression of swarming-related genes that modify pattern features, and we develop quantitative approaches to decoding. Next, we develop a dual-input system that modulates two swarming-related genes simultaneously, and we separately show that growing colonies can record dynamic environmental changes. We decode the resulting multicondition patterns with deep classification and segmentation models. Finally, we engineer a strain that records the presence of aqueous copper. This work creates an approach for building macroscale bacterial recorders, expanding the framework for engineering emergent microbial behaviors.
Collapse
Affiliation(s)
- Anjali Doshi
- Department of Biomedical Engineering, Columbia University, New York City, NY, USA
| | - Marian Shaw
- Department of Biomedical Engineering, Columbia University, New York City, NY, USA
| | - Ruxandra Tonea
- Department of Biomedical Engineering, Columbia University, New York City, NY, USA
| | - Soonhee Moon
- Department of Biomedical Engineering, Columbia University, New York City, NY, USA
| | - Rosalía Minyety
- Department of Biomedical Engineering, Columbia University, New York City, NY, USA
| | - Anish Doshi
- Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, CA, USA
| | - Andrew Laine
- Department of Biomedical Engineering, Columbia University, New York City, NY, USA
| | - Jia Guo
- Department of Psychiatry, Columbia University, New York City, NY, USA
- Mortimer B. Zuckerman Mind Brain Behavior Institute, Columbia University, New York City, NY, USA
| | - Tal Danino
- Department of Biomedical Engineering, Columbia University, New York City, NY, USA.
- Herbert Irving Comprehensive Cancer Center, Columbia University, New York City, NY, USA.
- Data Science Institute, Columbia University, New York City, NY, USA.
| |
Collapse
|
33
|
Meng S, Xu Z, Wang X, Liu Y, Li B, Zhang J, Zhang X, Liu T. Synthesis and photodynamic antimicrobial chemotherapy against multi-drug resistant Proteus mirabilis of ornithine-porphyrin conjugates in vitro and in vivo. Front Microbiol 2023; 14:1196072. [PMID: 37362917 PMCID: PMC10285166 DOI: 10.3389/fmicb.2023.1196072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Accepted: 05/18/2023] [Indexed: 06/28/2023] Open
Abstract
For the treatment of bacterial infections, photodynamic antimicrobial chemotherapy (PACT) has the advantage of circumventing multi-drug resistance. In this work, new cationic photosensitizers against multi-drug resistant Proteus mirabilis (MRPM) were designed and synthesized by the conjugation of amino phenyl porphyrin with basic amino acid L-ornithine. Their photoinactivation efficacies against MRPM in vitro were reported and include the influence of laser energy, uptake, MIC and MBC, dose-dependent photoinactivation effects, membrane integrity, and fluorescence imaging. The PACT in vivo was evaluated using a wound mouse model infected by MRPM. Photosensitizer 4d displayed high photo inactivation efficacy against MRPM at 7.81 μM under illumination, and it could accelerate wound healing via bactericidal effect. These ornithine-porphyrin conjugates are potential photosensitizers for PACT in the treatment of MRPM infection.
Collapse
Affiliation(s)
- Shuai Meng
- Department of Pharmacy, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin’s Clinical Research Center for Cancer, Tianjin, China
- Tianjin Key Laboratory of Biomedical Materials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China
| | - Zengping Xu
- Tianjin Key Laboratory of Biomedical Materials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China
- Center for Drug Evaluation, National Medical Products Administration, Beijing, China
| | - Xueming Wang
- Tianjin Key Laboratory of Biomedical Materials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China
| | - Yang Liu
- Tianjin Key Laboratory of Biomedical Materials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China
| | - Bole Li
- Department of Pharmacy, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin’s Clinical Research Center for Cancer, Tianjin, China
| | - Jie Zhang
- Department of Pharmacy, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin’s Clinical Research Center for Cancer, Tianjin, China
| | - Xiaolong Zhang
- Department of Pharmacy, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin’s Clinical Research Center for Cancer, Tianjin, China
| | - Tianjun Liu
- Tianjin Key Laboratory of Biomedical Materials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China
| |
Collapse
|
34
|
Behera S, Tanuku NRS, Moturi SRK, Loganathan J, Modali S, Tadi SR, Rachuri V. Huge anthropogenic microbial load during southwest monsoon season in coastal waters of Kakinada, Bay of Bengal. MARINE POLLUTION BULLETIN 2023; 192:114977. [PMID: 37167663 DOI: 10.1016/j.marpolbul.2023.114977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 04/16/2023] [Accepted: 04/19/2023] [Indexed: 05/13/2023]
Abstract
To examine the influence of anthropogenic activities on the marine ecosystem near the coastal waters of the port city, Kakinada, a study was conducted to investigate the abundance of heterotrophic, indicator and pathogenic bacteria during the spring inter monsoon (SIM) and southwest monsoon (SWM) seasons. A drastic change in the marine bacteria due to the input of allochthonous bacteria during SWM was noticed. An order of magnitude higher abundance of indicators (Escherichia coli and Enterococcus faecalis) and bacterial pathogens (Proteus mirabilis and Pseudomonas aeruginosa) was observed during SWM. In contrast, Chlorophyll-a, heterotrophic bacterial abundance, Aeromonas hydrophila and Klebsiella pneumoniae were higher during SIM. A significant increase in some of the indicator and pathogenic bacterial abundance due to moderate rainfall suggests that the improper drainage system in the city could spread these bacteria, posing a considerable threat to both environment and human health.
Collapse
Affiliation(s)
- Swarnaprava Behera
- CSIR-National Institute of Oceanography, Regional Centre, 176, Lawson's Bay Colony, Visakhapatnam 530017, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Naga Radha Srinivas Tanuku
- CSIR-National Institute of Oceanography, Regional Centre, 176, Lawson's Bay Colony, Visakhapatnam 530017, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.
| | - Sri Rama Krishna Moturi
- CSIR-National Institute of Oceanography, Regional Centre, 176, Lawson's Bay Colony, Visakhapatnam 530017, India
| | - Jagadeesan Loganathan
- CSIR-National Institute of Oceanography, Regional Centre, 176, Lawson's Bay Colony, Visakhapatnam 530017, India
| | - Sravani Modali
- CSIR-National Institute of Oceanography, Regional Centre, 176, Lawson's Bay Colony, Visakhapatnam 530017, India
| | - Satyanarayana Reddy Tadi
- CSIR-National Institute of Oceanography, Regional Centre, 176, Lawson's Bay Colony, Visakhapatnam 530017, India
| | - Vivek Rachuri
- CSIR-National Institute of Oceanography, Regional Centre, 176, Lawson's Bay Colony, Visakhapatnam 530017, India
| |
Collapse
|
35
|
Mancuso G, Midiri A, Gerace E, Marra M, Zummo S, Biondo C. Urinary Tract Infections: The Current Scenario and Future Prospects. Pathogens 2023; 12:pathogens12040623. [PMID: 37111509 PMCID: PMC10145414 DOI: 10.3390/pathogens12040623] [Citation(s) in RCA: 36] [Impact Index Per Article: 36.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Revised: 04/12/2023] [Accepted: 04/18/2023] [Indexed: 04/29/2023] Open
Abstract
Urinary tract infections (UTIs) are among the most common bacterial infections worldwide, occurring in both community and healthcare settings. Although the clinical symptoms of UTIs are heterogeneous and range from uncomplicated (uUTIs) to complicated (cUTIs), most UTIs are usually treated empirically. Bacteria are the main causative agents of these infections, although more rarely, other microorganisms, such as fungi and some viruses, have been reported to be responsible for UTIs. Uropathogenic Escherichia coli (UPEC) is the most common causative agent for both uUTIs and cUTIs, followed by other pathogenic microorganisms, such as Klebsiella pneumoniae, Proteus mirabilis, Enterococcus faecalis, and Staphylococcus spp. In addition, the incidence of UTIs caused by multidrug resistance (MDR) is increasing, resulting in a significant increase in the spread of antibiotic resistance and the economic burden of these infections. Here, we discuss the various factors associated with UTIs, including the mechanisms of pathogenicity related to the bacteria that cause UTIs and the emergence of increasing resistance in UTI pathogens.
Collapse
Affiliation(s)
- Giuseppe Mancuso
- Department of Human Pathology, University of Messina, 98125 Messina, Italy
| | - Angelina Midiri
- Department of Human Pathology, University of Messina, 98125 Messina, Italy
| | | | - Maria Marra
- Department of Human Pathology, University of Messina, 98125 Messina, Italy
| | - Sebastiana Zummo
- Department of Human Pathology, University of Messina, 98125 Messina, Italy
| | - Carmelo Biondo
- Department of Human Pathology, University of Messina, 98125 Messina, Italy
| |
Collapse
|
36
|
Clarke OE, Pelling H, Bennett V, Matsumoto T, Gregory GE, Nzakizwanayo J, Slate AJ, Preston A, Laabei M, Bock LJ, Wand ME, Ikebukuro K, Gebhard S, Sutton JM, Jones BV. Lipopolysaccharide structure modulates cationic biocide susceptibility and crystalline biofilm formation in Proteus mirabilis. Front Microbiol 2023; 14:1150625. [PMID: 37089543 PMCID: PMC10113676 DOI: 10.3389/fmicb.2023.1150625] [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: 01/24/2023] [Accepted: 03/06/2023] [Indexed: 04/08/2023] Open
Abstract
Chlorhexidine (CHD) is a cationic biocide used ubiquitously in healthcare settings. Proteus mirabilis, an important pathogen of the catheterized urinary tract, and isolates of this species are often described as "resistant" to CHD-containing products used for catheter infection control. To identify the mechanisms underlying reduced CHD susceptibility in P. mirabilis, we subjected the CHD tolerant clinical isolate RS47 to random transposon mutagenesis and screened for mutants with reduced CHD minimum inhibitory concentrations (MICs). One mutant recovered from these screens (designated RS47-2) exhibited ~ 8-fold reduction in CHD MIC. Complete genome sequencing of RS47-2 showed a single mini-Tn5 insert in the waaC gene involved in lipopolysaccharide (LPS) inner core biosynthesis. Phenotypic screening of RS47-2 revealed a significant increase in cell surface hydrophobicity and serum susceptibility compared to the wildtype, and confirmed defects in LPS production congruent with waaC inactivation. Disruption of waaC was also associated with increased susceptibility to a range of other cationic biocides but did not affect susceptibility to antibiotics tested. Complementation studies showed that repression of smvA efflux activity in RS47-2 further increased susceptibility to CHD and other cationic biocides, reducing CHD MICs to values comparable with the most CHD susceptible isolates characterized. The formation of crystalline biofilms and blockage of urethral catheters was also significantly attenuated in RS47-2. Taken together, these data show that aspects of LPS structure and upregulation of the smvA efflux system function in synergy to modulate susceptibility to CHD and other cationic biocides, and that LPS structure is also an important factor in P. mirabilis crystalline biofilm formation.
Collapse
Affiliation(s)
- O. E. Clarke
- Department of Life Sciences, University of Bath, Bath, United Kingdom
| | - H. Pelling
- Department of Life Sciences, University of Bath, Bath, United Kingdom
| | - V. Bennett
- Department of Life Sciences, University of Bath, Bath, United Kingdom
| | - T. Matsumoto
- Department of Biotechnology and Life Sciences, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - G. E. Gregory
- Department of Life Sciences, University of Bath, Bath, United Kingdom
| | - J. Nzakizwanayo
- Department of Life Sciences, University of Bath, Bath, United Kingdom
| | - A. J. Slate
- Department of Life Sciences, University of Bath, Bath, United Kingdom
| | - A. Preston
- Department of Life Sciences, University of Bath, Bath, United Kingdom
| | - M. Laabei
- Department of Life Sciences, University of Bath, Bath, United Kingdom
| | - L. J. Bock
- United Kingdom Health Security Agency, Salisbury, United Kingdom
| | - M. E. Wand
- United Kingdom Health Security Agency, Salisbury, United Kingdom
| | - K. Ikebukuro
- Department of Biotechnology and Life Sciences, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - S. Gebhard
- Department of Life Sciences, University of Bath, Bath, United Kingdom
| | - J. M. Sutton
- United Kingdom Health Security Agency, Salisbury, United Kingdom
| | - B. V. Jones
- Department of Life Sciences, University of Bath, Bath, United Kingdom
| |
Collapse
|
37
|
Huang CF, Wang JT, Chuang YC, Sheng WH, Chen YC. In vitro susceptibility of common Enterobacterales to eravacycline in Taiwan. JOURNAL OF MICROBIOLOGY, IMMUNOLOGY, AND INFECTION = WEI MIAN YU GAN RAN ZA ZHI 2023; 56:358-366. [PMID: 36243669 DOI: 10.1016/j.jmii.2022.09.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 09/06/2022] [Accepted: 09/26/2022] [Indexed: 11/07/2022]
Abstract
BACKGROUND New tetracycline derivatives exhibit broad-spectrum antimicrobial activities. This study aimed to assess the in vitro activity of eravacycline against common Enterobacterales. METHODS Clinical Enterobacterales isolates were collected between 2017 and 2021. The minimum inhibitory concentration (MIC) was determined using a broth microdilution test. RESULTS We identified Klebsiella pneumoniae (n = 300), Escherichia coli (n = 300), Klebsiella oxytoca (n = 100), Enterobacter cloacae complex (n = 100), Citrobacter freundii (n = 100), and Proteus mirabilis (n = 100). All P. mirabilis strains were resistant to eravacycline. Excluding P. mirabilis, the susceptibility rates to eravacycline, omadacycline, and tigecycline were 75.2%, 66.9%, and 73%, respectively. The MIC50 and MIC90 (mg/L) of eravacycline were 0.5 and 4 for K. pneumoniae, 0.5 and 1 for E. coli, 0.5 and 1 for K. oxytoca, 0.5 and 2 for E. cloacae complex, and 0.25 and 1 for C. freundii. In cefotaxime non-susceptible and meropenem susceptible Enterobacterales, excluding P. mirabilis, the susceptibility rates of eravacycline, omadacycline, and tigecycline were 69.7%, 57.1%, and 66.2%. We found decreased susceptibility rates of three new tetracycline derivatives against meropenem non-susceptible Enterobacterales (eravacycline: 47.1%, omadacycline: 39.4%, and tigecycline: 39.4%). Eravacycline showed a high susceptibility rate against cefotaxime non-susceptible and meropenem susceptible K. oxytoca (100%), C. freundii (93.2%), E. coli (85.9%), and meropenem non-susceptible E. coli (100%). CONCLUSION This study provides the MIC and susceptibility rate of eravacycline for common Enterobacterales. Eravacycline could be a therapeutic choice for cefotaxime non-susceptible or meropenem non-susceptible Enterobacterales, especially K. oxytoca, C. freundii, and E. coli.
Collapse
Affiliation(s)
- Chun-Fu Huang
- Department of Internal Medicine, National Taiwan University Hospital Yunlin Branch, Yunlin County, Taiwan; Department of Internal Medicine, National Taiwan University Hospital, Taipei City, Taiwan
| | - Jann-Tay Wang
- Department of Internal Medicine, National Taiwan University Hospital, Taipei City, Taiwan
| | - Yu-Chung Chuang
- Department of Internal Medicine, National Taiwan University Hospital, Taipei City, Taiwan.
| | - Wang-Huei Sheng
- Department of Internal Medicine, National Taiwan University Hospital, Taipei City, Taiwan
| | - Yee-Chun Chen
- Department of Internal Medicine, National Taiwan University Hospital, Taipei City, Taiwan
| |
Collapse
|
38
|
Roden A, Engelin MK, Pos KM, Geertsma ER. Membrane-anchored substrate binding proteins are deployed in secondary TAXI transporters. Biol Chem 2023:hsz-2022-0337. [PMID: 36916166 DOI: 10.1515/hsz-2022-0337] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Accepted: 02/10/2023] [Indexed: 03/16/2023]
Abstract
Substrate-binding proteins (SBPs) are part of solute transport systems and serve to increase substrate affinity and uptake rates. In contrast to primary transport systems, the mechanism of SBP-dependent secondary transport is not well understood. Functional studies have thus far focused on Na+-coupled Tripartite ATP-independent periplasmic (TRAP) transporters for sialic acid. Herein, we report the in vitro functional characterization of TAXIPm-PQM from the human pathogen Proteus mirabilis. TAXIPm-PQM belongs to a TRAP-subfamily using a different type of SBP, designated TRAP-associated extracytoplasmic immunogenic (TAXI) protein. TAXIPm-PQM catalyzes proton-dependent α-ketoglutarate symport and its SBP is an essential component of the transport mechanism. Importantly, TAXIPm-PQM represents the first functionally characterized SBP-dependent secondary transporter that does not rely on a soluble SBP, but uses a membrane-anchored SBP instead.
Collapse
Affiliation(s)
- Anja Roden
- Institute of Biochemistry, Biocenter, Goethe University Frankfurt, Max-von-Laue-Strasse 9, D-60438 Frankfurt am Main, Germany
| | - Melanie K Engelin
- Institute of Biochemistry, Biocenter, Goethe University Frankfurt, Max-von-Laue-Strasse 9, D-60438 Frankfurt am Main, Germany
| | - Klaas M Pos
- Institute of Biochemistry, Biocenter, Goethe University Frankfurt, Max-von-Laue-Strasse 9, D-60438 Frankfurt am Main, Germany
| | - Eric R Geertsma
- Institute of Biochemistry, Biocenter, Goethe University Frankfurt, Max-von-Laue-Strasse 9, D-60438 Frankfurt am Main, Germany.,Max Planck Institute of Molecular Cell Biology and Genetics, Pfotenhauerstrasse 108, D-01307 Dresden, Germany
| |
Collapse
|
39
|
Drzewiecka D, Siwińska M, Senchenkova SN, Levina EA, Shashkov AS, Knirel YA. Structural and Serological Characterization of the O Antigen of Proteus mirabilis Clinical Isolates Classified into a New Proteus Serogroup, O84. Int J Mol Sci 2023; 24:ijms24054699. [PMID: 36902128 PMCID: PMC10003115 DOI: 10.3390/ijms24054699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 02/24/2023] [Accepted: 02/26/2023] [Indexed: 03/05/2023] Open
Abstract
Two closely related Proteus mirabilis smooth strains, Kr1 and Ks20, were isolated from wound and skin samples, respectively, of two infected patients in central Poland. Serological tests, using the rabbit Kr1-specific antiserum, revealed that both strains presented the same O serotype. Their O antigens are unique among the Proteus O serotypes, which had been described earlier, as they were not recognized in an enzyme-linked immunosorbent assay (ELISA) by a set of Proteus O1-O83 antisera. Additionally, the Kr1 antiserum did not react with O1-O83 lipopolysaccharides (LPSs). The O-specific polysaccharide (OPS, O antigen) of P. mirabilis Kr1 was obtained via the mild acid degradation of the LPSs, and its structure was established via a chemical analysis and one- and two-dimensional 1H and 13C nuclear magnetic resonance (NMR) spectroscopy applied to both initial and O-deacetylated polysaccharides, where most β-2-acetamido-2-deoxyglucose (N-acetylglucosamine) (GlcNAc) residues are non-stoichiometrically O-acetylated at positions 3, 4, and 6 or 3 and 6, and a minority of α-GlcNAc residues are 6-O-acetylated. Based on the serological features and chemical data, P. mirabilis Kr1 and Ks20 were proposed as candidates to a new successive O-serogroup in the genus Proteus, O84, which is another example of new Proteus O serotypes identified lately among serologically differentiated Proteus bacilli infecting patients in central Poland.
Collapse
Affiliation(s)
- Dominika Drzewiecka
- Department of Biology of Bacteria, Faculty of Biology and Environmental Protection, University of Lodz, 90-237 Lodz, Poland
- Correspondence: ; Tel.: +48-42-6354469; Fax: +48-42-6655818
| | - Małgorzata Siwińska
- Department of Biology of Bacteria, Faculty of Biology and Environmental Protection, University of Lodz, 90-237 Lodz, Poland
| | - Sof’ya N. Senchenkova
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russia
| | - Evgeniya A. Levina
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russia
| | - Alexander S. Shashkov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russia
| | - Yuriy A. Knirel
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russia
| |
Collapse
|
40
|
Sood R, Walo C, Burton R, Khalife M, Dicko A, Mangana F. Spontaneous nosocomial Proteus mirabilis meningitis in a Human Immunodeficiency Virus (HIV)-infected adult patient: a case report. J Med Case Rep 2023; 17:52. [PMID: 36755276 PMCID: PMC9909980 DOI: 10.1186/s13256-022-03704-0] [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: 03/29/2022] [Accepted: 12/01/2022] [Indexed: 02/10/2023] Open
Abstract
BACKGROUND Gram-negative bacillary meningitis remains a rare occurrence, even in patients with human immunodeficiency virus. Current literature only describes anecdotal cases of spontaneous nosocomial Proteus mirabilis meningitis. This report describes the clinical manifestations and management of a patient with healthcare-associated spontaneous Gram-negative bacillary meningitis in a patient with advanced human immunodeficiency virus disease. CASE PRESENTATION A 23-year-old Congolese female was hospitalized in a human immunodeficiency virus specialized center for ongoing weight loss, chronic abdominal pain, and vomiting 9 months after initiation of treatment for tuberculosis meningitis. Hospitalization was complicated by healthcare-associated Gram-negative bacillary meningitis on day 18. Blood and cerebrospinal fluid cultures confirmed Proteus mirabilis. Antibiotic susceptibility testing showed extended spectrum beta-lactamase resistant to common antibiotics, and sensitive to meropenem. Despite initiation of high-dose meropenem by intravenous infusion (2 g every 8 hours), the patient did not improve, and died after 4 days of meropenem treatment. Gram-negative bacillary meningitis remains rare and is associated with an unfavorable prognosis. CONCLUSIONS This case report highlights the importance of microbiological identification of pathogens in resource-limited settings. As Gram-negative bacillary meningitis does not present with pleocytosis in patients with advanced human immunodeficiency virus, a negative lumbar puncture cannot exclude this diagnosis. Access to clinical bacteriology in resource-limited settings is essential to enable correct antibiotic treatment and avoid overuse of antibiotics to which there is already resistance. It further plays an essential role in public health by identifying antibiotic susceptibilities. Infection prevention and control measures must be reinforced in order to protect patients from such avoidable healthcare-associated infections.
Collapse
Affiliation(s)
- Radhika Sood
- grid.150338.c0000 0001 0721 9812Internal Medicine Department, Hôpitaux Universitaires de Genève, Geneva, Switzerland
| | - Chadrack Walo
- Centre Hospitalier Kabinda, Médecins Sans Frontieres, Commune de Lingwala, Kinshasa, Democratic Republic of Congo
| | - Rosie Burton
- SAMU, Médecins Sans Frontieres, Kinshasa, Democratic Republic of Congo
| | - Mohamad Khalife
- Médecins Sans Frontieres, Kinshasa, Democratic Republic of Congo
| | - Astan Dicko
- Laboratory of Centre Hospitalier Kabinda, Médecins Sans Frontieres, Kinshasa, Democratic Republic of Congo
| | - Freddy Mangana
- Centre Hospitalier Kabinda, Médecins Sans Frontieres, Commune de Lingwala, Kinshasa, Democratic Republic of Congo.
| |
Collapse
|
41
|
Cho THS, Pick K, Raivio TL. Bacterial envelope stress responses: Essential adaptors and attractive targets. BIOCHIMICA ET BIOPHYSICA ACTA. MOLECULAR CELL RESEARCH 2023; 1870:119387. [PMID: 36336206 DOI: 10.1016/j.bbamcr.2022.119387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 10/05/2022] [Accepted: 10/20/2022] [Indexed: 11/06/2022]
Abstract
Millions of deaths a year across the globe are linked to antimicrobial resistant infections. The need to develop new treatments and repurpose of existing antibiotics grows more pressing as the growing antimicrobial resistance pandemic advances. In this review article, we propose that envelope stress responses, the signaling pathways bacteria use to recognize and adapt to damage to the most vulnerable outer compartments of the microbial cell, are attractive targets. Envelope stress responses (ESRs) support colonization and infection by responding to a plethora of toxic envelope stresses encountered throughout the body; they have been co-opted into virulence networks where they work like global positioning systems to coordinate adhesion, invasion, microbial warfare, and biofilm formation. We highlight progress in the development of therapeutic strategies that target ESR signaling proteins and adaptive networks and posit that further characterization of the molecular mechanisms governing these essential niche adaptation machineries will be important for sparking new therapeutic approaches aimed at short-circuiting bacterial adaptation.
Collapse
Affiliation(s)
- Timothy H S Cho
- Department of Biological Sciences, University of Alberta, Edmonton, AB, Canada
| | - Kat Pick
- Department of Biological Sciences, University of Alberta, Edmonton, AB, Canada
| | - Tracy L Raivio
- Department of Biological Sciences, University of Alberta, Edmonton, AB, Canada.
| |
Collapse
|
42
|
Chaudhary P, Singh D, Swapnil P, Meena M, Janmeda P. Euphorbia neriifolia (Indian Spurge Tree): A Plant of Multiple Biological and Pharmacological Activities. SUSTAINABILITY 2023; 15:1225. [DOI: 10.3390/su15021225] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Although India has a well-established and growing economy surrounding synthetic drug chemistry with an antibiotic base, a large part of the population, especially in forested villages and tribal belts, is relying solely on plant-derived drugs. This is due to a lower number of side effects, low chances of resistance development against pathogenic microorganisms, as well as the diversity and affordability of such drugs. In the Indian subcontinents, Euphorbia neriifolia Linn. (EN) is one of the valuable plants from the big family of Euphorbiaceae, which is usually found in rocky and hilly areas. E. neriifolia was found to be useful in curing tumors, abdominal swelling, bronchial infection, hydrophobia, earache, cough and cold, asthma, leprosy, gonorrhea, spleen enlargement, leucoderma, snake bites, scorpion stings, and causing appetite improvement, etc. Different in vitro and in vivo experimental studies were performed to determine the antioxidant, anti-diabetic, immunomodulatory, anti-inflammatory, anti-arthritic, wound healing, anti-atherosclerosis, radioprotective, anti-anxiety, anti-convulsant, anti-psychotic, anti-thrombotic, dermal irritation, hemolytic, analgesic, anti-fertility, diuretic, anti-microbial, anti-diarrheal, and anti-carcinogenic activities of the various parts of EN. Several bioactive compounds, such as euphol, nerifoliol, taraxerol, euphonerins A–G, lectin, etc., were isolated from E. neriifolia and need to be investigated further for various biological activities (cardiovascular and neuronal diseases). In the pharmaceutical sector, E. neriifolia was selected for the development of new drugs due to its broad pharmacological activities. Therefore, in the present review, distribution, classification, morphological and microscopical description, phytochemical investigation, pharmacological activities, medicinal uses, harmful effects, and their treatment were evaluated, especially against different lifestyle-related diseases.
Collapse
|
43
|
Lila ASA, Rajab AAH, Abdallah MH, Rizvi SMD, Moin A, Khafagy ES, Tabrez S, Hegazy WAH. Biofilm Lifestyle in Recurrent Urinary Tract Infections. LIFE (BASEL, SWITZERLAND) 2023; 13:life13010148. [PMID: 36676100 PMCID: PMC9865985 DOI: 10.3390/life13010148] [Citation(s) in RCA: 30] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 12/27/2022] [Accepted: 12/30/2022] [Indexed: 01/06/2023]
Abstract
Urinary tract infections (UTIs) represent one of the most common infections that are frequently encountered in health care facilities. One of the main mechanisms used by bacteria that allows them to survive hostile environments is biofilm formation. Biofilms are closed bacterial communities that offer protection and safe hiding, allowing bacteria to evade host defenses and hide from the reach of antibiotics. Inside biofilm communities, bacteria show an increased rate of horizontal gene transfer and exchange of resistance and virulence genes. Additionally, bacterial communication within the biofilm allows them to orchestrate the expression of virulence genes, which further cements the infestation and increases the invasiveness of the infection. These facts stress the necessity of continuously updating our information and understanding of the etiology, pathogenesis, and eradication methods of this growing public health concern. This review seeks to understand the role of biofilm formation in recurrent urinary tact infections by outlining the mechanisms underlying biofilm formation in different uropathogens, in addition to shedding light on some biofilm eradication strategies.
Collapse
Affiliation(s)
- Amr S. Abu Lila
- Department of Pharmaceutics, College of Pharmacy, University of Ha’il, Ha’il 81442, Saudi Arabia
- Molecular Diagnostics and Personalized Therapeutics Unit, University of Ha’il, Ha’il 81442, Saudi Arabia
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt
- Correspondence: (A.S.A.L.); (W.A.H.H.)
| | - Azza A. H. Rajab
- Department of Microbiology and Immunology, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt
| | - Marwa H. Abdallah
- Department of Pharmaceutics, College of Pharmacy, University of Ha’il, Ha’il 81442, Saudi Arabia
- Molecular Diagnostics and Personalized Therapeutics Unit, University of Ha’il, Ha’il 81442, Saudi Arabia
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt
| | - Syed Mohd Danish Rizvi
- Department of Pharmaceutics, College of Pharmacy, University of Ha’il, Ha’il 81442, Saudi Arabia
- Molecular Diagnostics and Personalized Therapeutics Unit, University of Ha’il, Ha’il 81442, Saudi Arabia
| | - Afrasim Moin
- Department of Pharmaceutics, College of Pharmacy, University of Ha’il, Ha’il 81442, Saudi Arabia
- Molecular Diagnostics and Personalized Therapeutics Unit, University of Ha’il, Ha’il 81442, Saudi Arabia
| | - El-Sayed Khafagy
- Department of Pharmaceutics, College of Pharmacy, Prince Sattam bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Suez Canal University, Ismailia 41522, Egypt
| | - Shams Tabrez
- King Fahd Medical Research Center, King Abdulaziz University, Jeddah 21589, Saudi Arabia
- Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Wael A. H. Hegazy
- Department of Microbiology and Immunology, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt
- Pharmacy Program, Department of Pharmaceutical Sciences, Oman College of Health Sciences, Muscat 113, Oman
- Correspondence: (A.S.A.L.); (W.A.H.H.)
| |
Collapse
|
44
|
Huang Y, Chen J, Jiang Q, Huang N, Ding X, Peng L, Deng X. The molybdate-binding protein ModA is required for Proteus mirabilis-induced UTI. Front Microbiol 2023; 14:1156273. [PMID: 37180242 PMCID: PMC10174112 DOI: 10.3389/fmicb.2023.1156273] [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: 02/01/2023] [Accepted: 03/28/2023] [Indexed: 05/16/2023] Open
Abstract
Background Proteus mirabilis is one of the pathogens commonly causing urinary tract infections (UTIs). The molybdate-binding protein ModA encoded by modA binds molybdate with high affinity and transports it. Increasing evidence shows that ModA promotes the survival of bacteria in anaerobic environments and participates in bacterial virulence by obtaining molybdenum. However, the role of ModA in the pathogenesis of P. mirabilis remains unknown. Results In this study, a series of phenotypic assays and transcriptomic analyses were used to study the role of ModA in the UTIs induced by P. mirabilis. Our data showed that ModA absorbed molybdate with high affinity and incorporated it into molybdopterin, thus affecting the anaerobic growth of P. mirabilis. Loss of ModA enhanced bacterial swarming and swimming and up-regulated the expression of multiple genes in flagellar assembly pathway. The loss of ModA also resulted in decreased biofilm formation under anaerobic growth conditions. The modA mutant significantly inhibited bacterial adhesion and invasion to urinary tract epithelial cells and down-regulated the expression of multiple genes associated with pilus assembly. Those alterations were not due to anaerobic growth defects. In addition, the decreased bacteria in the bladder tissue, the weakened inflammatory damage, the low level of IL-6, and minor weight change was observed in the UTI mouse model infected with modA mutant. Conclusion Here, we reported that in P. mirabilis, ModA mediated the transport of molybdate, thereby affecting the activity of nitrate reductase and thus affecting the growth of bacteria under anaerobic conditions. Overall, this study clarified the indirect role of ModA in the anaerobic growth, motility, biofilm formation, and pathogenicity of P. mirabilis and its possible pathway, and emphasized the importance of the molybdate-binding protein ModA to P. mirabilis in mediating molybdate uptake, allowing the bacterium to adapt to complex environmental conditions and cause UTIs. Our results provided valuable information on the pathogenesis of ModA-induced P. mirabilis UTIs and may facilitate the development of new treatment strategies.
Collapse
Affiliation(s)
- Yi Huang
- Guangzhou Key Laboratory for Clinical Rapid Diagnosis and Early Warning of Infectious Diseases, Guangzhou Medical University, Guangzhou, Guangdong, China
- KingMed School of Laboratory Medicine, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Jinbin Chen
- Guangzhou Key Laboratory for Clinical Rapid Diagnosis and Early Warning of Infectious Diseases, Guangzhou Medical University, Guangzhou, Guangdong, China
- KingMed School of Laboratory Medicine, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Qiao Jiang
- Guangdong 999 Brain Hospital, Guangzhou, Guangdong, China
| | - Nan Huang
- Guangzhou Key Laboratory for Clinical Rapid Diagnosis and Early Warning of Infectious Diseases, Guangzhou Medical University, Guangzhou, Guangdong, China
- KingMed School of Laboratory Medicine, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Xin Ding
- Guangzhou Key Laboratory for Clinical Rapid Diagnosis and Early Warning of Infectious Diseases, Guangzhou Medical University, Guangzhou, Guangdong, China
- KingMed School of Laboratory Medicine, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Liang Peng
- KingMed School of Laboratory Medicine, Guangzhou Medical University, Guangzhou, Guangdong, China
- The Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
- *Correspondence: Xiaoyan Deng, ; Liang Peng,
| | - Xiaoyan Deng
- Guangzhou Key Laboratory for Clinical Rapid Diagnosis and Early Warning of Infectious Diseases, Guangzhou Medical University, Guangzhou, Guangdong, China
- KingMed School of Laboratory Medicine, Guangzhou Medical University, Guangzhou, Guangdong, China
- *Correspondence: Xiaoyan Deng, ; Liang Peng,
| |
Collapse
|
45
|
Xu K, Wang Y, Jian Y, Chen T, Liu Q, Wang H, Li M, He L. Staphylococcus aureus ST1 promotes persistent urinary tract infection by highly expressing the urease. Front Microbiol 2023; 14:1101754. [PMID: 36910215 PMCID: PMC9992547 DOI: 10.3389/fmicb.2023.1101754] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Accepted: 01/30/2023] [Indexed: 02/24/2023] Open
Abstract
Staphylococcus aureus (SA) is a relatively uncommon cause of urinary tract infections (UTIs) in the general population. Although rare, S. aureus-induced UTIs are prone to potentially life-threatening invasive infections such as bacteremia. To investigate the molecular epidemiology, phenotypic characteristics, and pathophysiology of S. aureus-induced UTIs, we analyzed non-repetitive 4,405 S. aureus isolates collected from various clinical sources from 2008 to 2020 from a general hospital in Shanghai, China. Among these, 193 isolates (4.38%) were cultivated from the midstream urine specimens. Epidemiological analysis showed UTI-derived ST1 (UTI-ST1) and UTI-ST5 are the primary sequence types of UTI-SA. Furthermore, we randomly selected 10 isolates from each of the UTI-ST1, non-UTI-ST1 (nUTI-ST1), and UTI-ST5 groups to characterize their in vitro and in vivo phenotypes. The in vitro phenotypic assays revealed that UTI-ST1 exhibits an obvious decline in hemolysis of human red blood cells and increased biofilm and adhesion in the urea-supplemented medium, compared to the medium without urea, while UTI-ST5 and nUTI-ST1 did not show significant differences between the biofilm-forming and adhesion abilities. In addition, the UTI-ST1 displayed intense urease activities by highly expressing urease genes, indicating the potential role of urease in UTI-ST1 survival and persistence. Furthermore, in vitro virulence assays using the UTI-ST1 ureC mutant showed no significant difference in the hemolytic and biofilm-forming phenotypes in the presence or absence of urea in the tryptic soy broth (TSB) medium. The in vivo UTI model also showed that the CFU of the UTI-ST1 ureC mutant rapidly reduced during UTI pathogenesis 72 h post-infection, while UTI-ST1 and UTI-ST5 persisted in the urine of the infected mice. Furthermore, the phenotypes and the urease expression of UTI-ST1 were found to be potentially regulated by the Agr system with the change in environmental pH. In summary, our results provide important insights into the role of urease in S. aureus-induced UTI pathogenesis in promoting bacterial persistence in the nutrient-limiting urinary microenvironment.
Collapse
Affiliation(s)
- Kai Xu
- Department of Laboratory Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yanan Wang
- Department of Laboratory Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ying Jian
- Department of Laboratory Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Tianchi Chen
- Department of Laboratory Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Qian Liu
- Department of Laboratory Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Hua Wang
- Department of Laboratory Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Min Li
- Department of Laboratory Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Faculty of Medical Laboratory Science, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Lei He
- Department of Laboratory Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| |
Collapse
|
46
|
Gahlot DK, Taheri N, MacIntyre S. Diversity in Genetic Regulation of Bacterial Fimbriae Assembled by the Chaperone Usher Pathway. Int J Mol Sci 2022; 24:ijms24010161. [PMID: 36613605 PMCID: PMC9820224 DOI: 10.3390/ijms24010161] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 11/09/2022] [Accepted: 11/10/2022] [Indexed: 12/24/2022] Open
Abstract
Bacteria express different types of hair-like proteinaceous appendages on their cell surface known as pili or fimbriae. These filamentous structures are primarily involved in the adherence of bacteria to both abiotic and biotic surfaces for biofilm formation and/or virulence of non-pathogenic and pathogenic bacteria. In pathogenic bacteria, especially Gram-negative bacteria, fimbriae play a key role in bacteria-host interactions which are critical for bacterial invasion and infection. Fimbriae assembled by the Chaperone Usher pathway (CUP) are widespread within the Enterobacteriaceae, and their expression is tightly regulated by specific environmental stimuli. Genes essential for expression of CUP fimbriae are organised in small blocks/clusters, which are often located in proximity to other virulence genes on a pathogenicity island. Since these surface appendages play a crucial role in bacterial virulence, they have potential to be harnessed in vaccine development. This review covers the regulation of expression of CUP-assembled fimbriae in Gram-negative bacteria and uses selected examples to demonstrate both dedicated and global regulatory mechanisms.
Collapse
Affiliation(s)
- Dharmender K. Gahlot
- School of Biological Sciences, University of Reading, Reading RG6 6EX, UK
- Department of Molecular Biology, Umeå University, 901 87 Umeå, Sweden
- Umeå Centre for Microbial Research (UCMR), Umeå University, 901 87 Umeå, Sweden
- Correspondence: (D.K.G.); (S.M.)
| | - Nayyer Taheri
- APC Microbiome Institute, University College Cork, T12 K8AF Cork, Ireland
| | - Sheila MacIntyre
- School of Biological Sciences, University of Reading, Reading RG6 6EX, UK
- Correspondence: (D.K.G.); (S.M.)
| |
Collapse
|
47
|
Construction of an Ordered Transposon Library for Uropathogenic Proteus mirabilis HI4320. Microbiol Spectr 2022; 10:e0314222. [PMID: 36377916 PMCID: PMC9769666 DOI: 10.1128/spectrum.03142-22] [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] [Indexed: 11/16/2022] Open
Abstract
Ordered transposon libraries are a valuable resource for many bacterial species, especially those with difficult methods for generating targeted genetic mutations. Here, we present the construction of an ordered transposon library for the bacterial urinary tract pathogen Proteus mirabilis strain HI4320. This library will facilitate future studies into P. mirabilis biology. For large experimental screens, it may be used to overcome bottleneck constraints and avoid biased outcomes resulting from gene length. For smaller studies, the library allows sidestepping the laborious construction of single targeted mutants. This library, containing 18,432 wells, was condensed into a smaller library containing 1,728 mutants. Each selected mutant had a single transposon insertion in an open reading frame, covering 45% of predicted genes encoded by P. mirabilis HI4320. This coverage was lower than expected and was due both to library wells with no mapped insertions and a surprisingly high proportion of mixed clones and multiple transposon insertion events. We offer recommendations for improving future library construction and suggestions for how to use this P. mirabilis library resource. IMPORTANCE Ordered libraries facilitate large genetic screens by guaranteeing high genomic coverage with a minimal number of mutants, and they can save time and effort by reducing the need to construct targeted mutations. This resource is now available for P. mirabilis, a common and complicating agent of catheter-associated urinary tract infection. We also present obstacles encountered during library construction with the goal to aid others who would like to construct ordered transposon libraries in other species.
Collapse
|
48
|
Ma WQ, Han YY, Zhou L, Peng WQ, Mao LY, Yang X, Wang Q, Zhang TJ, Wang HN, Lei CW. Contamination of Proteus mirabilis harbouring various clinically important antimicrobial resistance genes in retail meat and aquatic products from food markets in China. Front Microbiol 2022; 13:1086800. [PMID: 36590410 PMCID: PMC9802577 DOI: 10.3389/fmicb.2022.1086800] [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: 11/01/2022] [Accepted: 12/01/2022] [Indexed: 12/23/2022] Open
Abstract
Proteus mirabilis is an opportunistic pathogen frequently associated with nosocomial infection and food poisoning cases. Contamination of P. mirabilis in retail meat products may be important transmission routes for human infection with P. mirabilis. In this study a total of 89 P. mirabilis strains were isolated from 347 samples in 14 food markets in China and subjected to whole-genome sequencing. Phylogenetic analysis showed that all 89 strains were divided into 81 different clones (SNPs >5), indicating high genetic diversity of P. mirabilis in food markets. Antimicrobial susceptibility testing showed that 81 (91.01%) strains displayed multidrug resistance profiles. Seventy-three different resistance genes (or variants) were found, including various clinically important antimicrobial resistance genes aac(6')-Ib-cr (77.53%), bla CTX-M (39.33%), fosA3 (30.34%), as well as multiresistance gene cfr (4.50%), tigecycline resistance gene cluster tmexCD3-toprJ1 (4.50%) and carbapenemase gene bla NDM-1 (1.12%). Diverse genetic elements including Tn7 transposon, plasmid, SXT/R391 integrative conjugative element were associated with the horizontal transfer of cfr. tmexCD3-toprJ1 and bla NDM-1 were located on ICEPmiChnJZ26 and Salmonella genomic island 1, respectively. Our study emphasized high contamination of P. mirabilis harbouring various clinically important antimicrobial resistance genes in retail meat and aquatic products, which might be an important issue in terms of food safety and human health.
Collapse
|
49
|
Periferakis A, Periferakis K, Badarau IA, Petran EM, Popa DC, Caruntu A, Costache RS, Scheau C, Caruntu C, Costache DO. Kaempferol: Antimicrobial Properties, Sources, Clinical, and Traditional Applications. Int J Mol Sci 2022; 23:ijms232315054. [PMID: 36499380 PMCID: PMC9740324 DOI: 10.3390/ijms232315054] [Citation(s) in RCA: 51] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 11/23/2022] [Accepted: 11/26/2022] [Indexed: 12/03/2022] Open
Abstract
Flavonoids are a category of plant-derived compounds which exhibit a large number of health-related effects. One of the most well-known and studied flavonoids is kaempferol, which can be found in a wide variety of herbs and plant families. Apart from their anticarcinogenic and anti-inflammatory effects, kaempferol and its associated compounds also exhibit antibacterial, antifungal, and antiprotozoal activities. The development of drugs and treatment schemes based on these compounds is becoming increasingly important in the face of emerging resistance of numerous pathogens as well as complex molecular interactions between various drug therapies. In addition, many of the kaempferol-containing plants are used in traditional systems all over the world for centuries to treat numerous conditions. Due to its variety of sources and associated compounds, some molecular mechanisms of kaempferol antimicrobial activity are well known while others are still under analysis. This paper thoroughly documents the vegetal and food sources of kaempferol as well as the most recent and significant studies regarding its antimicrobial applications.
Collapse
Affiliation(s)
- Argyrios Periferakis
- Department of Physiology, The “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania
- Akadimia of Ancient Greek and Traditional Chinese Medicine, 16675 Athens, Greece
| | - Konstantinos Periferakis
- Akadimia of Ancient Greek and Traditional Chinese Medicine, 16675 Athens, Greece
- Pan-Hellenic Organization of Educational Programs (P.O.E.P), 17236 Athens, Greece
- Orasis Acupuncture Institute, 11526 Athens, Greece
| | - Ioana Anca Badarau
- Department of Physiology, The “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania
| | - Elena Madalina Petran
- Department of Biochemistry, The “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania
- Department of Toxicology, Grigore Alexandrescu Emergency Children’s Hospital, 011743 Bucharest, Romania
| | - Delia Codruta Popa
- Department of Biochemistry, The “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania
- Department of Hematology, Fundeni Clinical Institute, 022328 Bucharest, Romania
- Correspondence: (D.C.P.); (C.S.)
| | - Ana Caruntu
- Department of Oral and Maxillofacial Surgery, ‘Dr. Carol Davila’ Central Military Emergency Hospital, 010825 Bucharest, Romania
- Department of Oral and Maxillofacial Surgery, Faculty of Dental Medicine, ‘Titu Maiorescu’ University, 031593 Bucharest, Romania
| | - Raluca Simona Costache
- Department of Gastroenterology, Gastroenterology and Internal Medicine Clinic, ‘Dr. Carol Davila’ Central Military Emergency Hospital, 010825 Bucharest, Romania
- Department of Internal Medicine and Gastroenterology, ‘Carol Davila’ University of Medicine and Pharmacy, 050474 Bucharest, Romania
| | - Cristian Scheau
- Department of Physiology, The “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania
- Correspondence: (D.C.P.); (C.S.)
| | - Constantin Caruntu
- Department of Physiology, The “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania
- Department of Dermatology, ‘Prof. N.C. Paulescu’ National Institute of Diabetes, Nutrition and Metabolic Diseases, 011233 Bucharest, Romania
| | - Daniel Octavian Costache
- Department of Dermatology, ‘Dr. Carol Davila’ Central Military Emergency Hospital, 010825 Bucharest, Romania
| |
Collapse
|
50
|
Palusiak A. Proteus mirabilis and Klebsiella pneumoniae as pathogens capable of causing co-infections and exhibiting similarities in their virulence factors. Front Cell Infect Microbiol 2022; 12:991657. [PMID: 36339335 PMCID: PMC9630907 DOI: 10.3389/fcimb.2022.991657] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Accepted: 10/03/2022] [Indexed: 09/23/2023] Open
Abstract
The genera Klebsiella and Proteus were independently described in 1885. These Gram-negative rods colonize the human intestinal tract regarded as the main reservoir of these opportunistic pathogens. In favorable conditions they cause infections, often hospital-acquired ones. The activity of K. pneumoniae and P. mirabilis, the leading pathogens within each genus, results in infections of the urinary (UTIs) and respiratory tracts, wounds, bacteremia, affecting mainly immunocompromised patients. P. mirabilis and K. pneumoniae cause polymicrobial UTIs, which are often persistent due to the catheter biofilm formation or increasing resistance of the bacteria to antibiotics. In this situation a need arises to find the antigens with features common to both species. Among many virulence factors produced by both pathogens urease shows some structural similarities but the biggest similarities have been observed in lipids A and the core regions of lipopolysaccharides (LPSs). Both species produce capsular polysaccharides (CPSs) but only in K. pneumoniae these antigens play a crucial role in the serological classification scheme, which in Proteus spp. is based on the structural and serological diversity of LPS O-polysaccharides (OPSs). Structural and serological similarities observed for Klebsiella spp. and Proteus spp. polysaccharides are important in the search for the cross-reacting vaccine antigens.
Collapse
Affiliation(s)
- Agata Palusiak
- Laboratory of General Microbiology, Department of Biology of Bacteria, Institute of Microbiology, Biotechnology and Immunology, University of Łódź, Łódź, Poland
| |
Collapse
|