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Aitken KJ, Schröder A, Haddad A, Sidler M, Penna F, Fernandez N, Ahmed T, Marino V, Bechbache M, Jiang JX, Tolg C, Bägli DJ. Epigenetic insights to pediatric uropathology: Celebrating the fundamental biology vision of Tony Khoury. J Pediatr Urol 2024:S1477-5131(24)00307-3. [PMID: 38944627 DOI: 10.1016/j.jpurol.2024.06.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2024] [Revised: 06/06/2024] [Accepted: 06/07/2024] [Indexed: 07/01/2024]
Abstract
INTRODUCTION Many pediatric urology conditions affect putatively normal tissues or appear too commonly to be based solely on specific DNA mutations. Understanding epigenetic mechanisms in pediatric urology, therefore, has many implications that can impact cell and tissue responses to settings, such as environmental and hormonal influences on urethral development, uropathogenic infections, obstructive stimuli, all of which originate externally or extracellularly. Indeed, the cell's response to external stimuli is often mediated epigenetically. In this commentary, we highlight work on the critical role that epigenetic machinery, such as DNA methyltransferases (DNMTs), Enhancer of Zeste Polycomb Repressive Complex 2 Subunit (EZH2), and others play in regulating gene expression and cellular functions in three urological contexts. DESIGN Animal and cellular constructs were used to model clinical pediatric uropathology. The hypertrophy, trabeculation, and fibrosis of the chronically obstructed bladder was explored using smooth muscle cell models employing disorganised vs. normal extracellular matrix (ECM), as well as a new animal model of chronic obstructive bladder disease (COBD) which retains its pathologic features even after bladder de-obstruction. Cell models from human and murine hypospadias or genital tubercles (GT) were used to illustrate developmental responses and epigenetic dependency of key developmental genes. Finally, using bladder urothelial and organoid culture systems, we examined activity of epigenetic machinery in response to non uropathogenic vs. uropathogenic E.coli (UPEC). DNMT and EZH2 expression and function were interrogated in these model systems. RESULTS Disordered ECM exerted a principal mitogenic and epigenetic role for on bladder smooth muscle both in vitro and in CODB in vivo. Key genes, e.g., BDNF and KCNB2 were under epigenetic regulation in actively evolving obstruction and COBD, though each condition showed distinct epigenetic responses. In models of hypospadias, estrogen strongly dysregulated WNT and Hox expression, which was normalized by epigenetic inhibition. Finally, DNA methylation machinery in the urothelium showed specific activation when challenged by uropathogenic E.coli. Similarly, UPEC induces hypermethylation and downregulation of the growth suppressor p16INK4A. Moreover, host cells exposed to UPEC produced secreted factors inducing epigenetic responses transmissible from one affected cell to another without ongoing bacterial presence. DISCUSSION Microenvironmental influences altered epigenetic activity in the three described urologic contexts. Considering that many obstructed bladders continue to display abnormal architecture and dysfunction despite relief of obstruction similar to after resection of posterior valves or BPH, the epigenetic mechanisms described highlight novel approaches for understanding the underlying smooth muscle myopathy of this crucial clinical problem. Similarly, there is evidence for an epigenetic basis of xenoestrogen on development of hypospadias, and UTI-induced pan-urothelial alteration of epigenetic marks and propensity for subsequent (recurrent) UTI. The impact of mechanical, hormonal, infectious triggers on genitourinary epigenetic machinery activity invite novel avenues for targeting epigenetic modifications associated with these non-cancer diseases in urology. This includes the use of deactivated CRISPR-based technologies for precise epigenome targeting and editing. Overall, we underscore the importance of understanding epigenetic regulation in pediatric urology for the development of innovative therapeutic and management strategies.
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Affiliation(s)
- K J Aitken
- Developmental and Stem Cell Biology, Research Institute, Hospital for Sick Children, 686 Bay St., Toronto, Ontario, Canada; DIYbio Toronto, 1677 St. Clair West, Toronto, Ontario, Canada.
| | - Annette Schröder
- Developmental and Stem Cell Biology, Research Institute, Hospital for Sick Children, 686 Bay St., Toronto, Ontario, Canada; Division of Urology, Department of Surgery, Hospital for Sick Children, Toronto, Ontario, Canada; Department of Urology and Pediatric Urology of the University Medical Center Mainz, Mainz, Rheinland-Pfalz, Germany
| | - Ahmed Haddad
- Developmental and Stem Cell Biology, Research Institute, Hospital for Sick Children, 686 Bay St., Toronto, Ontario, Canada; Division of Urology, Department of Surgery, Hospital for Sick Children, Toronto, Ontario, Canada
| | - Martin Sidler
- Developmental and Stem Cell Biology, Research Institute, Hospital for Sick Children, 686 Bay St., Toronto, Ontario, Canada; Division of Urology, Department of Surgery, Hospital for Sick Children, Toronto, Ontario, Canada
| | - Frank Penna
- Developmental and Stem Cell Biology, Research Institute, Hospital for Sick Children, 686 Bay St., Toronto, Ontario, Canada; Division of Urology, Department of Surgery, Hospital for Sick Children, Toronto, Ontario, Canada
| | - Nicolas Fernandez
- Developmental and Stem Cell Biology, Research Institute, Hospital for Sick Children, 686 Bay St., Toronto, Ontario, Canada; Division of Urology, Department of Surgery, Hospital for Sick Children, Toronto, Ontario, Canada
| | - Tabina Ahmed
- Developmental and Stem Cell Biology, Research Institute, Hospital for Sick Children, 686 Bay St., Toronto, Ontario, Canada; Human Biology Programme, University of Toronto, Toronto, Ontario, Canada
| | - Vincent Marino
- DIYbio Toronto, 1677 St. Clair West, Toronto, Ontario, Canada
| | - Matthew Bechbache
- Developmental and Stem Cell Biology, Research Institute, Hospital for Sick Children, 686 Bay St., Toronto, Ontario, Canada
| | - Jia-Xin Jiang
- Developmental and Stem Cell Biology, Research Institute, Hospital for Sick Children, 686 Bay St., Toronto, Ontario, Canada; Human Biology Programme, University of Toronto, Toronto, Ontario, Canada; Department of Physiology, Institute of Medical Sciences, University of Toronto, Toronto, Ontario, Canada
| | - Cornelia Tolg
- Developmental and Stem Cell Biology, Research Institute, Hospital for Sick Children, 686 Bay St., Toronto, Ontario, Canada
| | - Darius J Bägli
- Developmental and Stem Cell Biology, Research Institute, Hospital for Sick Children, 686 Bay St., Toronto, Ontario, Canada; Division of Urology, Department of Surgery, Hospital for Sick Children, Toronto, Ontario, Canada; Department of Physiology, Institute of Medical Sciences, University of Toronto, Toronto, Ontario, Canada; Division of Urology, Department of Surgery, Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
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Xu K, Zou Y, Lin C, Zhang L, Tan M, Li M, Wu J, Li X, He Y, Liu P, Li K, Cai K. Cascade catalysis nanozyme for interfacial functionalization in combating implant infections associated with diabetes via sonodynamic therapy and adaptive immune activation. Biomaterials 2024; 311:122649. [PMID: 38850718 DOI: 10.1016/j.biomaterials.2024.122649] [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: 02/01/2024] [Revised: 05/20/2024] [Accepted: 06/02/2024] [Indexed: 06/10/2024]
Abstract
Innovative solutions are required for the intervention of implant associated infections (IAIs), especially for bone defect patients with chronic inflammatory diseases like diabetes mellitus (DM). The complex immune microenvironment of infections renders implants with direct antibacterial ability inadequate for the prolonged against of bacterial infections. Herein, a synergistic treatment strategy was presented that combined sonodynamic therapy (SDT) with adaptive immune modulation to treat IAIs in diabetes patients. A multifunctional coating was created on the surface of titanium (Ti) implants, consisting of manganese dioxide nanoflakes (MnO2 NFs) with cascade catalytic enzyme activity and a responsive degradable hydrogel containing a sonosensitizer. The reactive oxygen species (ROS) generated by glucose-hydrogen peroxide (H2O2) cascade catalysis and ultrasound (US) activation sonosensitizer helped kill bacteria and release bacterial antigens. Meanwhile, Mn2+ facilitated dendritic cells (DCs) maturation, enhancing antigen presentation to activate both cellular and humoral adaptive immunity against bacterial infections. This approach effectively eliminated bacteria in established diabetic IAIs model and activated systemic antibacterial immunity, providing long-term antibacterial protection. This study presents a non-antibiotic immunotherapeutic strategy for fighting IAIs in chronic diseases.
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Affiliation(s)
- Kun Xu
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, China
| | - Yanan Zou
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, China
| | - Chuanchuan Lin
- Department of Blood Transfusion, Laboratory of Radiation Biology, The Second Affiliated Hospital, Third Military Medical University, Chongqing, 400037, China
| | - Liangshuai Zhang
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, China
| | - Meijun Tan
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, China
| | - Meng Li
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, China
| | - Jing Wu
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, China
| | - Xuan Li
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, China
| | - Ye He
- Thomas Lord Department of Mechanical Engineering and Materials Science, Duke University, Durham, NC, 27708, USA
| | - Peng Liu
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, China.
| | - Ke Li
- Thomas Lord Department of Mechanical Engineering and Materials Science, Duke University, Durham, NC, 27708, USA.
| | - Kaiyong Cai
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, China.
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Simoni A, Schwartz L, Junquera GY, Ching CB, Spencer JD. Current and emerging strategies to curb antibiotic-resistant urinary tract infections. Nat Rev Urol 2024:10.1038/s41585-024-00877-9. [PMID: 38714857 DOI: 10.1038/s41585-024-00877-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/26/2024] [Indexed: 05/23/2024]
Abstract
Rising rates of antibiotic resistance in uropathogenic bacteria compromise patient outcomes and prolong hospital stays. Consequently, new strategies are needed to prevent and control the spread of antibiotic resistance in uropathogenic bacteria. Over the past two decades, sizeable clinical efforts and research advances have changed urinary tract infection (UTI) treatment and prevention strategies to conserve antibiotic use. The emergence of antimicrobial stewardship, policies from national societies, and the development of new antimicrobials have shaped modern UTI practices. Future UTI management practices could be driven by the evolution of antimicrobial stewardship, improved and readily available diagnostics, and an improved understanding of how the microbiome affects UTI. Forthcoming UTI treatment and prevention strategies could employ novel bactericidal compounds, combinations of new and classic antimicrobials that enhance bacterial killing, medications that prevent bacterial attachment to uroepithelial cells, repurposing drugs, and vaccines to curtail the rising rates of antibiotic resistance in uropathogenic bacteria and improve outcomes in people with UTI.
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Affiliation(s)
- Aaron Simoni
- The Kidney and Urinary Tract Center, Nationwide Children's Abigail Wexner Research Institute, Columbus, OH, USA
| | - Laura Schwartz
- The Kidney and Urinary Tract Center, Nationwide Children's Abigail Wexner Research Institute, Columbus, OH, USA
- Department of Pediatrics, Division of Nephrology and Hypertension, Nationwide Children's, Columbus, OH, USA
- The Ohio State University College of Medicine, Columbus, OH, USA
| | - Guillermo Yepes Junquera
- Department of Pediatrics, Division of Infectious Diseases, Nationwide Children's, Columbus, OH, USA
| | - Christina B Ching
- The Kidney and Urinary Tract Center, Nationwide Children's Abigail Wexner Research Institute, Columbus, OH, USA
- Department of Urology, Nationwide Children's, Columbus, OH, USA
| | - John David Spencer
- The Kidney and Urinary Tract Center, Nationwide Children's Abigail Wexner Research Institute, Columbus, OH, USA.
- Department of Pediatrics, Division of Nephrology and Hypertension, Nationwide Children's, Columbus, OH, USA.
- The Ohio State University College of Medicine, Columbus, OH, USA.
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Marsh MC, Junquera GY, Stonebrook E, Spencer JD, Watson JR. Urinary Tract Infections in Children. Pediatr Rev 2024; 45:260-270. [PMID: 38689106 DOI: 10.1542/pir.2023-006017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/02/2024]
Abstract
Despite the American Academy of Pediatrics guidelines for the evaluation, treatment, and management of urinary tract infections (UTIs), UTI diagnosis and management remains challenging for clinicians. Challenges with acute UTI management stem from vague presenting signs and symptoms, diagnostic uncertainty, limitations in laboratory testing, and selecting appropriate antibiotic therapy in an era with increasing rates of antibiotic-resistant uropathogens. Recurrent UTI management remains difficult due to an incomplete understanding of the factors contributing to UTI, when to assess a child with repeated infections for kidney and urinary tract anomalies, and limited prevention strategies. To help reduce these uncertainties, this review provides a comprehensive overview of UTI epidemiology, risk factors, diagnosis, treatment, and prevention strategies that may help pediatricians overcome the challenges associated with acute and recurrent UTI management.
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Affiliation(s)
- Melanie C Marsh
- Division of Hospital Medicine, Department of Pediatrics, Advocate Aurora Atrium Health Systems, Chicago, IL
| | - Guillermo Yepes Junquera
- Kidney and Urinary Tract Center, The Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, OH
- Division of Infectious Diseases
| | - Emily Stonebrook
- Kidney and Urinary Tract Center, The Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, OH
- Division of Nephrology and Hypertension, Department of Pediatrics, The Ohio State University College of Medicine, Columbus, OH
| | - John David Spencer
- Kidney and Urinary Tract Center, The Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, OH
- Division of Nephrology and Hypertension, Department of Pediatrics, The Ohio State University College of Medicine, Columbus, OH
| | - Joshua R Watson
- Center for Clinical Excellence, Nationwide Children's Hospital, Columbus, OH
- Division of Infectious Diseases
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Ahmadi S, Ambite I, Brisuda A, Háček J, Haq F, Sabari S, Vanarsa K, Mohan C, Babjuk M, Svanborg C. Similar immune responses to alpha1-oleate and Bacillus Calmette-Guérin treatment in patients with bladder cancer. Cancer Med 2024; 13:e7091. [PMID: 38553868 PMCID: PMC10980842 DOI: 10.1002/cam4.7091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 02/19/2024] [Accepted: 02/28/2024] [Indexed: 04/02/2024] Open
Abstract
BACKGROUND The molecular content of urine is defined by filtration in the kidneys and by local release from tissues lining the urinary tract. Pathological processes and different therapies change the molecular composition of urine and a variety of markers have been analyzed in patients with bladder cancer. The response to BCG immunotherapy and chemotherapy has been extensively studied and elevated urine concentrations of IL-1RA, IFN-α, IFN-γ TNF-α, and IL-17 have been associated with improved outcome. METHODS In this study, the host response to intravesical alpha 1-oleate treatment was characterized in patients with non-muscle invasive bladder cancer by proteomic and transcriptomic analysis. RESULTS Proteomic profiling detected a significant increase in multiple cytokines in the treatment group compared to placebo. The innate immune response was strongly activated, including IL-1RA and pro-inflammatory cytokines in the IL-1 family (IL-1α, IL-1β, IL-33), chemokines (MIP-1α, IL-8), and interferons (IFN-α2, IFN-γ). Adaptive immune mediators included IL-12, Granzyme B, CD40, PD-L1, and IL-17D, suggesting broad effects of alpha 1-oleate treatment on the tumor tissues. CONCLUSIONS The cytokine response profile in alpha 1-oleate treated patients was similar to that reported in BCG treated patients, suggesting a significant overlap. A reduction in protein levels at the end of treatment coincided with inhibition of cancer-related gene expression in tissue biopsies, consistent with a positive treatment effect. Thus, in addition to killing tumor cells and inducing cell detachment, alpha 1-oleate is shown to activate a broad immune response with a protective potential.
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Affiliation(s)
- Shahram Ahmadi
- Division of Microbiology, Immunology and Glycobiology, Department of Laboratory Medicine, Faculty of MedicineLund UniversityLundSweden
| | - Ines Ambite
- Division of Microbiology, Immunology and Glycobiology, Department of Laboratory Medicine, Faculty of MedicineLund UniversityLundSweden
| | - Antonín Brisuda
- Department of UrologyMotol University Hospital, 2nd Faculty of Medicine, Charles University PrahaPragueCzech Republic
| | - Jaromír Háček
- Department of Pathology and Molecular MedicineMotol University Hospital, 2nd Faculty of Medicine, Charles University PrahaPragueCzech Republic
| | - Farhan Haq
- Division of Microbiology, Immunology and Glycobiology, Department of Laboratory Medicine, Faculty of MedicineLund UniversityLundSweden
| | - Samudra Sabari
- Division of Microbiology, Immunology and Glycobiology, Department of Laboratory Medicine, Faculty of MedicineLund UniversityLundSweden
| | - Kamala Vanarsa
- Department of Biomedical EngineeringUniversity of HoustonHoustonTexasUSA
| | - Chandra Mohan
- Department of Biomedical EngineeringUniversity of HoustonHoustonTexasUSA
| | - Marek Babjuk
- Department of UrologyMotol University Hospital, 2nd Faculty of Medicine, Charles University PrahaPragueCzech Republic
| | - Catharina Svanborg
- Division of Microbiology, Immunology and Glycobiology, Department of Laboratory Medicine, Faculty of MedicineLund UniversityLundSweden
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Wu KY, Cao B, Chen WB, Wu W, Zhao S, Min XY, Yang J, Han J, Dong X, Wang N, Wu Y, Garred P, Sacks SH, Zhou W, Li K. Collectin 11 has a pivotal role in host defense against kidney and bladder infection in mice. Kidney Int 2024; 105:524-539. [PMID: 38158182 DOI: 10.1016/j.kint.2023.11.031] [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: 02/24/2023] [Revised: 11/11/2023] [Accepted: 11/28/2023] [Indexed: 01/03/2024]
Abstract
The urinary tract is constantly exposed to microorganisms. Host defense mechanisms in protection from microbial colonization and development of urinary tract infections require better understanding to control kidney infection. Here we report that the lectin collectin 11 (CL-11), particularly kidney produced, has a pivotal role in host defense against uropathogen infection. CL-11 was found in mouse urine under normal and pathological conditions. Mice with global gene ablation of Colec11 had increased susceptibility to and severity of kidney and to an extent, bladder infection. Mice with kidney-specific Colec11 ablation exhibited a similar disease phenotype to that observed in global Colec11 deficient mice, indicating the importance of kidney produced CL-11 for protection against kidney and bladder infection. Conversely, intravesical or systemic administration of recombinant CL-11 reduced susceptibility to and severity of kidney and bladder infection. Mechanism analysis revealed that CL-11 can mediate several key innate defense mechanisms (agglutination, anti- adhesion, opsonophagocytosis), and limit local inflammatory responses to pathogens. Furthermore, CL-11-mediated innate defense mechanisms can act on clinically relevant microorganisms including multiple antibiotic resistant strains. CL-11 was detectable in eight of 24 urine samples from patients with urinary tract infections but not detectable in urine samples from ten healthy individuals. Thus, our findings demonstrate that CL-11 is a key factor of host defense mechanisms in kidney and bladder infection with therapeutic potential for human application.
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Affiliation(s)
- Kun-Yi Wu
- Core Research Laboratory, Second Affiliated Hospital, Xi'an Jiaotong University, Xi'an, China
| | - Bo Cao
- Core Research Laboratory, Second Affiliated Hospital, Xi'an Jiaotong University, Xi'an, China
| | - Wan-Bing Chen
- Core Research Laboratory, Second Affiliated Hospital, Xi'an Jiaotong University, Xi'an, China
| | - Weiju Wu
- Peter Gorer Department of Immunobiology, School of Immunology & Microbial Sciences, Faculty of Life Sciences & Medicine, King's College London, London, UK
| | - Shujuan Zhao
- Core Research Laboratory, Second Affiliated Hospital, Xi'an Jiaotong University, Xi'an, China
| | - Xiao-Yun Min
- Core Research Laboratory, Second Affiliated Hospital, Xi'an Jiaotong University, Xi'an, China
| | - Jurong Yang
- Department of Nephrology, The Third Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Jin Han
- Department of Nephrology, Second Affiliated Hospital, Xi'an Jiaotong University, Xi'an, China
| | - Xia Dong
- Department of Ophthalmology, The First Affiliated Hospital, Sun Yat-sen University, Guangdong, China
| | - Na Wang
- Core Research Laboratory, Second Affiliated Hospital, Xi'an Jiaotong University, Xi'an, China
| | - Yi Wu
- MOE Key Laboratory of Environment and Genes Related to Diseases, School of Basic Medical Sciences, Xi'an Jiaotong University, Xi'an, China
| | - Peter Garred
- Laboratory of Molecular Medicine, Department of Clinical Immunology, Rigshospitalet and University of Copenhagen, Copenhagen, Denmark
| | - Steven H Sacks
- Peter Gorer Department of Immunobiology, School of Immunology & Microbial Sciences, Faculty of Life Sciences & Medicine, King's College London, London, UK
| | - Wuding Zhou
- Peter Gorer Department of Immunobiology, School of Immunology & Microbial Sciences, Faculty of Life Sciences & Medicine, King's College London, London, UK.
| | - Ke Li
- Core Research Laboratory, Second Affiliated Hospital, Xi'an Jiaotong University, Xi'an, China.
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Bharuka V, Meshram R, Munjewar PK. Comprehensive Review of Urinary Tract Infections in Renal Transplant Recipients: Clinical Insights and Management Strategies. Cureus 2024; 16:e53882. [PMID: 38465031 PMCID: PMC10924982 DOI: 10.7759/cureus.53882] [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: 10/24/2023] [Accepted: 02/04/2024] [Indexed: 03/12/2024] Open
Abstract
Urinary tract infections (UTIs) pose a significant challenge in the care of renal transplant recipients. This comprehensive review explores this population's multifaceted landscape of UTIs, emphasizing the importance of early diagnosis and tailored management strategies. Renal transplant recipients face an elevated risk of UTIs due to immunosuppression, altered urinary tract anatomy, and complex comorbidities. Complications of UTIs can lead to graft dysfunction and systemic illness, underscoring the need for effective management. The emergence of multidrug-resistant uropathogens adds complexity to treatment, highlighting the importance of targeted antibiotic therapy. Antibiotics are the most commonly prescribed drugs for UTIs, with nitrofurantoin, fosfomycin, amoxicillin, and amoxicillin-clavulanate potassium being some of the commonly used antibiotics. However, the emergence of multidrug-resistant uropathogens has led to the exploration of alternative treatments, such as bacteriophage therapy, as a potential alternative against multidrug-resistant uropathogenic bacteria. Analgesics such as phenazopyridine can be prescribed to relieve discomfort associated with UTIs. Estrogen therapy has also been suggested as a potential treatment option for UTIs, particularly in postmenopausal women. Trimethoprim-sulfamethoxazole or trimethoprim is recommended as first-line therapy for uncomplicated UTIs. The choice of drug and therapy for UTIs depends on the severity of the infection, the causative organism, and the presence of antibiotic resistance. Preventive measures encompass pre-transplant evaluation, perioperative strategies, post-transplant follow-up, and vaccination. A multidisciplinary approach involving transplant specialists, infectious disease experts, pharmacists, and patient engagement is vital for successful care. The future of UTI management lies in ongoing research, exploring personalized medicine, novel therapies, and innovative prevention strategies. By implementing these strategies and advancing research, healthcare providers can improve graft and patient survival, enhancing the quality of care for renal transplant recipients.
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Affiliation(s)
- Vidhi Bharuka
- Pediatrics, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Revat Meshram
- Pediatrics, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Pratiksha K Munjewar
- Medical Surgical Nursing, Smt. Radhikabai Meghe Memorial College of Nursing, Datta Meghe Institute of Higher Education and Research, Wardha, IND
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Wang Z, Jiang Z, Zhang Y, Wang C, Liu Z, Jia Z, Bhushan S, Yang J, Zhang Z. Exosomes derived from bladder epithelial cells infected with uropathogenic Escherichia coli increase the severity of urinary tract infections (UTIs) by impairing macrophage function. PLoS Pathog 2024; 20:e1011926. [PMID: 38190378 PMCID: PMC10798623 DOI: 10.1371/journal.ppat.1011926] [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: 08/24/2023] [Revised: 01/19/2024] [Accepted: 12/24/2023] [Indexed: 01/10/2024] Open
Abstract
Uropathogenic Escherichia coli (UPEC) is the primary causative agent of urinary tract infections (UTIs) in humans. Moreover, as one of the most common bacterial pathogens, UPEC imposes a substantial burden on healthcare systems worldwide. Epithelial cells and macrophages are two major components of the innate immune system, which play critical roles in defending the bladder against UPEC invasion. Yet, the routes of communication between these cells during UTI pathogenesis are still not fully understood. In the present study, we investigated the role of membrane-bound nanovesicles (exosomes) in the communication between bladder epithelial cells and macrophages during UPEC infection, using an array of techniques such as flow cytometry, miRNA profiling, RNA sequencing, and western blotting. Moreover, our in vitro findings were validated in a mouse model of UPEC-induced cystitis. We found that UPEC infection induced the bladder epithelial MB49 cell line to secrete large numbers of exosomes (MB49-U-Exo), which were efficiently absorbed by macrophages both in vivo and in vitro. Assimilation of MB49-U-Exo induced macrophages to produce proinflammatory cytokines, including tumor necrosis factor (TNF)α. Exposure of macrophages to MB49-U-Exo reduced their phagocytic activity (by downregulating the expression of phagocytosis-related genes) and increased their rate of apoptosis. Mechanistically, we showed that MB49-U-Exo were enriched in miR-18a-5p, which induced TNFα expression in macrophages by targeting PTEN and activating the MAPK/JNK signaling pathway. Moreover, administration of the exosome secretion inhibitor GW4869 or a TNFα-neutralizing antibody alleviated UPEC-mediated tissue damage in mice with UPEC-induced cystitis by reducing the bacterial burden of the bladder and dampening the associated inflammatory response. Collectively, these findings suggest that MB49-U-Exo regulate macrophage function in a way that exacerbates UPEC-mediated tissue impairment. Thus, targeting exosomal -release or TNFα signaling during UPEC infection may represent promising non-antibiotic strategies for treating UTIs.
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Affiliation(s)
- Zihao Wang
- Department of Urology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Ziming Jiang
- Department of Urology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Yu Zhang
- Department of Urology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Congwei Wang
- Department of Urology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Zhaoyang Liu
- Department of Urology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Zhankui Jia
- Department of Urology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Sudhanshu Bhushan
- Institute of Anatomy and Cell Biology, Unit of Reproductive Biology, Justus-Liebig-University Giessen, Giessen, Germany
| | - Jinjian Yang
- Department of Urology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Zhengguo Zhang
- Department of Urology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
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Ambite I, Tran TH, Butler DSC, Cavalera M, Wan MLY, Ahmadi S, Svanborg C. Therapeutic Effects of IL-1RA against Acute Bacterial Infections, including Antibiotic-Resistant Strains. Pathogens 2023; 13:42. [PMID: 38251349 PMCID: PMC10820880 DOI: 10.3390/pathogens13010042] [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: 12/07/2023] [Revised: 12/25/2023] [Accepted: 12/28/2023] [Indexed: 01/23/2024] Open
Abstract
Innate immunity is essential for the anti-microbial defense, but excessive immune activation may cause severe disease. In this study, immunotherapy was shown to prevent excessive innate immune activation and restore the anti-bacterial defense. E. coli-infected Asc-/- mice develop severe acute cystitis, defined by IL-1 hyper-activation, high bacterial counts, and extensive tissue pathology. Here, the interleukin-1 receptor antagonist (IL-1RA), which inhibits IL-1 hyper-activation in acute cystitis, was identified as a more potent inhibitor of inflammation and NK1R- and substance P-dependent pain than cefotaxime. Furthermore, IL-1RA treatment inhibited the excessive innate immune activation in the kidneys of infected Irf3-/- mice and restored tissue integrity. Unexpectedly, IL-1RA also accelerated bacterial clearance from infected bladders and kidneys, including antibiotic-resistant E. coli, where cefotaxime treatment was inefficient. The results suggest that by targeting the IL-1 response, control of the innate immune response to infection may be regained, with highly favorable treatment outcomes, including infections caused by antibiotic-resistant strains.
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Affiliation(s)
| | | | | | | | | | | | - Catharina Svanborg
- Division of Microbiology, Immunology and Glycobiology, Department of Laboratory Medicine, Faculty of Medicine, Lund University, 221 84 Lund, Sweden; (I.A.); (T.H.T.); (D.S.C.B.); (M.C.); (M.L.Y.W.); (S.A.)
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Durrani B, Mohammad A, Ljubetic BM, Dobberfuhl AD. The Potential Role of Persister Cells in Urinary Tract Infections. Curr Urol Rep 2023; 24:541-551. [PMID: 37907771 DOI: 10.1007/s11934-023-01182-5] [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] [Accepted: 08/22/2023] [Indexed: 11/02/2023]
Abstract
PURPOSE OF REVIEW This review explores the role of persister cells in urinary tract infections (UTIs). UTIs are one of the most common bacterial infections, affecting millions of people worldwide. Persister cells are a subpopulation of bacteria with dormant metabolic activity which allows survival in the presence of antibiotics. RECENT FINDINGS This review summarizes recent research on the pathogenesis of persister cell formation in UTIs, the impact of persister cells on the effectiveness of antibiotics, the challenges they pose for treatment, and the need for new strategies to target these cells. Furthermore, this review examines the current state of research on the identification and characterization of persister cells in UTIs, as well as the future directions for investigations in this field. This review highlights the importance of understanding the role of persister cells in UTIs and the potential impact of targeting these cells in the development of new treatments.
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Affiliation(s)
- Butool Durrani
- Department of Internal Medicine, Aga Khan University Hospital, National Stadium Rd, Karachi, Karachi City, Pakistan
| | - Ashu Mohammad
- Department of Urology, Center for Academic Medicine, Stanford University School of Medicine, 453 Quarry Road, Urology-5656, Palo Alto, CA, 94304, USA
| | - Bernardita M Ljubetic
- Department of Urology, Center for Academic Medicine, Stanford University School of Medicine, 453 Quarry Road, Urology-5656, Palo Alto, CA, 94304, USA
| | - Amy D Dobberfuhl
- Department of Urology, Center for Academic Medicine, Stanford University School of Medicine, 453 Quarry Road, Urology-5656, Palo Alto, CA, 94304, USA.
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11
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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.
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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
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12
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Schwartz L, de Dios Ruiz-Rosado J, Stonebrook E, Becknell B, Spencer JD. Uropathogen and host responses in pyelonephritis. Nat Rev Nephrol 2023; 19:658-671. [PMID: 37479904 PMCID: PMC10913074 DOI: 10.1038/s41581-023-00737-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/21/2023] [Indexed: 07/23/2023]
Abstract
Urinary tract infections (UTIs) are among the most common bacterial infections seen in clinical practice. The ascent of UTI-causing pathogens to the kidneys results in pyelonephritis, which can trigger kidney injury, scarring and ultimately impair kidney function. Despite sizable efforts to understand how infections develop or are cleared in the bladder, our appreciation of the mechanisms by which infections develop, progress or are eradicated in the kidney is limited. The identification of virulence factors that are produced by uropathogenic Escherichia coli to promote pyelonephritis have begun to fill this knowledge gap, as have insights into the mechanisms by which kidney tubular epithelial cells oppose uropathogenic E. coli infection to prevent or eradicate UTIs. Emerging data also illustrate how specific cellular immune responses eradicate infection whereas other immune cell populations promote kidney injury. Insights into the mechanisms by which uropathogenic E. coli circumvent host immune defences or antibiotic therapy to cause pyelonephritis is paramount to the development of new prevention and treatment strategies to mitigate pyelonephritis and its associated complications.
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Affiliation(s)
- Laura Schwartz
- The Kidney and Urinary Tract Center, Nationwide Children's Abigail Wexner Research Institute, Columbus, OH, USA.
- The Ohio State University College of Medicine, Columbus, OH, USA.
| | - Juan de Dios Ruiz-Rosado
- The Kidney and Urinary Tract Center, Nationwide Children's Abigail Wexner Research Institute, Columbus, OH, USA
- The Ohio State University College of Medicine, Columbus, OH, USA
| | - Emily Stonebrook
- The Kidney and Urinary Tract Center, Nationwide Children's Abigail Wexner Research Institute, Columbus, OH, USA
- The Ohio State University College of Medicine, Columbus, OH, USA
| | - Brian Becknell
- The Kidney and Urinary Tract Center, Nationwide Children's Abigail Wexner Research Institute, Columbus, OH, USA
- The Ohio State University College of Medicine, Columbus, OH, USA
| | - John David Spencer
- The Kidney and Urinary Tract Center, Nationwide Children's Abigail Wexner Research Institute, Columbus, OH, USA.
- The Ohio State University College of Medicine, Columbus, OH, USA.
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13
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Petrova NV, Emelyanova AG, Tarasov SA, Aparin PG, Ledov VA. Efficacy of Raphamin against Pneumococcal Infection: a Preclinical Study. Bull Exp Biol Med 2023; 175:649-652. [PMID: 37861906 DOI: 10.1007/s10517-023-05919-7] [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: 12/23/2022] [Indexed: 10/21/2023]
Abstract
The aim of the study was to evaluate the activity of Raphamin in a model of non-lethal pneumococcal infection caused by Streptococcus pneumoniae 3 in BALB/c mice. The drug or placebo was administered intragastrically 3 days prior to infection, 2 h before and 2 h post infection, and then for 3 full days, alone or in combination with antibiotic (amoxicil-lin/clavulanic acid). Raphamin monotherapy significantly decreased bacterial load in the lungs in comparison with placebo (p<0.05) which was comparable to the effect in antibiotic alone or combined with Raphamin. Raphamin prevented reproduction of Streptococcus pneumoniae in the lower respiratory tract and its combination with the antibiotic was safe and did not reduce the efficacy of amoxicillin/clavulanic acid.
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Affiliation(s)
- N V Petrova
- Research Institute of General Pathology and Pathophysiology, Moscow, Russia.
- LLC "MATERIA MEDICA HOLDING", Moscow, Russia.
| | - A G Emelyanova
- Research Institute of General Pathology and Pathophysiology, Moscow, Russia
- LLC "MATERIA MEDICA HOLDING", Moscow, Russia
| | - S A Tarasov
- Research Institute of General Pathology and Pathophysiology, Moscow, Russia
- LLC "MATERIA MEDICA HOLDING", Moscow, Russia
| | - P G Aparin
- LLC "GRITVAK", Moscow, Russia
- National Research Center - Institute of Immunology Federal Medical-Biological Agency of Russia, Moscow, Russia
| | - V A Ledov
- LLC "GRITVAK", Moscow, Russia
- National Research Center - Institute of Immunology Federal Medical-Biological Agency of Russia, Moscow, Russia
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14
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Huang LP, Liu Y, Li QJ, Zhang WQ, Wu CY, Zhao LM, Xie HQ. A Modified Small Intestinal Submucosa Patch with Multifunction to Promote Scarless Repair and Reinvigoration of Urethra. Adv Healthc Mater 2023; 12:e2300519. [PMID: 37062917 DOI: 10.1002/adhm.202300519] [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: 02/17/2023] [Revised: 03/28/2023] [Indexed: 04/18/2023]
Abstract
To reconstruct and restore the functions of the male urethra is a challenging task for urologists. The acellular matrix graft currently used in the clinics is mono-functional and may cause a series of complications including stricture, fibrosis, and stone formation. As a result, such graft materials cannot meet the increasing demand for multifunctionality in the field of urethral tissue engineering. In this context, a multifunctional urethral patch is designed for the repair of urethral defects by mixing protocatechualdehyde (PCA) with small intestinal submucosa (SIS) under an alkalin condition to allow cross linking. As shown, the PCA/SIS patch possesses excellent biocompatibility, antioxidant activity, and anti-inflammatory property. More importantly, this patch can remarkably promote the adhesion, proliferation, and directional extension of rabbit bladder epithelial mucous cells (R-EMCs) as well as rabbit bladder smooth muscle cells (R-SMCs), and upregulate the expression of cytokeratin in the EMCs and contractile protein in the SMCs in vitro. In vivo experiments also confirm that the PCA/SIS patch can significantly enhance scarless repair of urethral defects in rabbits by facilitating smooth muscle regeneration, reducing excessive collagen deposition, and accelerating re-epithelialization and neovascularization. Taken together, the newly developed multifunctional PCA/SIS patch provides a promising candidate for urethral regeneration.
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Affiliation(s)
- Li-Ping Huang
- Department of Orthopedics Surgery and Orthopedic Research Institute, Laboratory of Stem Cell and Tissue Engineering, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041, China
| | - Yuan Liu
- Department of Orthopedics Surgery and Orthopedic Research Institute, Laboratory of Stem Cell and Tissue Engineering, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041, China
| | - Qian-Jin Li
- Department of Orthopedics Surgery and Orthopedic Research Institute, Laboratory of Stem Cell and Tissue Engineering, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041, China
| | - Wen-Qian Zhang
- Department of Orthopedics Surgery and Orthopedic Research Institute, Laboratory of Stem Cell and Tissue Engineering, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041, China
| | - Chen-Yu Wu
- Department of Orthopedics Surgery and Orthopedic Research Institute, Laboratory of Stem Cell and Tissue Engineering, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041, China
| | - Long-Mei Zhao
- Department of Orthopedics Surgery and Orthopedic Research Institute, Laboratory of Stem Cell and Tissue Engineering, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041, China
| | - Hui-Qi Xie
- Department of Orthopedics Surgery and Orthopedic Research Institute, Laboratory of Stem Cell and Tissue Engineering, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041, China
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Whelan S, Lucey B, Finn K. Uropathogenic Escherichia coli (UPEC)-Associated Urinary Tract Infections: The Molecular Basis for Challenges to Effective Treatment. Microorganisms 2023; 11:2169. [PMID: 37764013 PMCID: PMC10537683 DOI: 10.3390/microorganisms11092169] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 08/23/2023] [Accepted: 08/25/2023] [Indexed: 09/29/2023] Open
Abstract
Urinary tract infections (UTIs) are among the most common bacterial infections, especially among women and older adults, leading to a significant global healthcare cost burden. Uropathogenic Escherichia coli (UPEC) are the most common cause and accounts for the majority of community-acquired UTIs. Infection by UPEC can cause discomfort, polyuria, and fever. More serious clinical consequences can result in urosepsis, kidney damage, and death. UPEC is a highly adaptive pathogen which presents significant treatment challenges rooted in a complex interplay of molecular factors that allow UPEC to evade host defences, persist within the urinary tract, and resist antibiotic therapy. This review discusses these factors, which include the key genes responsible for adhesion, toxin production, and iron acquisition. Additionally, it addresses antibiotic resistance mechanisms, including chromosomal gene mutations, antibiotic deactivating enzymes, drug efflux, and the role of mobile genetic elements in their dissemination. Furthermore, we provide a forward-looking analysis of emerging alternative therapies, such as phage therapy, nano-formulations, and interventions based on nanomaterials, as well as vaccines and strategies for immunomodulation. This review underscores the continued need for research into the molecular basis of pathogenesis and antimicrobial resistance in the treatment of UPEC, as well as the need for clinically guided treatment of UTIs, particularly in light of the rapid spread of multidrug resistance.
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Affiliation(s)
- Shane Whelan
- Department of Biological Sciences, Munster Technological University, Bishopstown, T12 P928 Cork, Ireland;
| | - Brigid Lucey
- Department of Biological Sciences, Munster Technological University, Bishopstown, T12 P928 Cork, Ireland;
| | - Karen Finn
- Department of Analytical, Biopharmaceutical and Medical Sciences, Atlantic Technological University Galway City, Dublin Road, H91 T8NW Galway, Ireland
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Nayak SS, Naidu A, Sudhakaran SL, Vino S, Selvaraj G. Prospects of Novel and Repurposed Immunomodulatory Drugs against Acute Respiratory Distress Syndrome (ARDS) Associated with COVID-19 Disease. J Pers Med 2023; 13:664. [PMID: 37109050 PMCID: PMC10142859 DOI: 10.3390/jpm13040664] [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: 02/13/2023] [Revised: 04/09/2023] [Accepted: 04/11/2023] [Indexed: 04/29/2023] Open
Abstract
Acute respiratory distress syndrome (ARDS) is intricately linked with SARS-CoV-2-associated disease severity and mortality, especially in patients with co-morbidities. Lung tissue injury caused as a consequence of ARDS leads to fluid build-up in the alveolar sacs, which in turn affects oxygen supply from the capillaries. ARDS is a result of a hyperinflammatory, non-specific local immune response (cytokine storm), which is aggravated as the virus evades and meddles with protective anti-viral innate immune responses. Treatment and management of ARDS remain a major challenge, first, because the condition develops as the virus keeps replicating and, therefore, immunomodulatory drugs are required to be used with caution. Second, the hyperinflammatory responses observed during ARDS are quite heterogeneous and dependent on the stage of the disease and the clinical history of the patients. In this review, we present different anti-rheumatic drugs, natural compounds, monoclonal antibodies, and RNA therapeutics and discuss their application in the management of ARDS. We also discuss on the suitability of each of these drug classes at different stages of the disease. In the last section, we discuss the potential applications of advanced computational approaches in identifying reliable drug targets and in screening out credible lead compounds against ARDS.
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Affiliation(s)
- Smruti Sudha Nayak
- Department of Bio-Sciences, School of Bio Sciences and Technology, Vellore Institute of Technology, Vellore 632014, Tamil Nadu, India
| | - Akshayata Naidu
- Department of Biotechnology, School of Bio Sciences and Technology, Vellore Institute of Technology, Vellore 632014, Tamil Nadu, India
| | - Sajitha Lulu Sudhakaran
- Department of Biotechnology, School of Bio Sciences and Technology, Vellore Institute of Technology, Vellore 632014, Tamil Nadu, India
| | - Sundararajan Vino
- Department of Bio-Sciences, School of Bio Sciences and Technology, Vellore Institute of Technology, Vellore 632014, Tamil Nadu, India
| | - Gurudeeban Selvaraj
- Centre for Research in Molecular Modeling, Department of Chemistry and Biochemistry, Concordia University-Loyola Campus, Montreal, QC H4B 1R6, Canada
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17
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Reid G. Perspective: microbial interventions in the urinary tract. MICROBIOME RESEARCH REPORTS 2023; 2:3. [PMID: 38045610 PMCID: PMC10688806 DOI: 10.20517/mrr.2022.17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 01/30/2023] [Accepted: 02/14/2023] [Indexed: 12/05/2023]
Abstract
Despite multiple advances in medicine, the management of urinary tract infections (UTIs) in women has remained stalled for decades. To prevent the development of symptomatic recurrences, low-dose antibiotics are the mainstay, while alternative approaches have been attempted with limited success. The use of probiotics was first considered forty years ago, and while some promising studies have been published, additional evidence in larger patient groups is needed to recommend specific strains as a primary preventive regimen. Overall, the role of beneficial microbes in reducing the risk of UTI and other urological diseases, such as urolithiasis, remains a target for researchers. The aim of this perspective is to offer a viewpoint on the status of this approach and recommendations for how to develop novel probiotic therapies.
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Affiliation(s)
- Gregor Reid
- Canadian R&D Centre for Human Microbiome and Probiotics, Lawson Health Research Institute, London, Ontario N6A 4V2, Canada
- Departments of Microbiology and Immunology, and Surgery, Western University, London, Ontario N6A 3K7, Canada
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18
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Krivošíková K, Šupčíková N, Gaál Kovalčíková A, Janko J, Pastorek M, Celec P, Podracká Ľ, Tóthová Ľ. Neutrophil extracellular traps in urinary tract infection. Front Pediatr 2023; 11:1154139. [PMID: 37020646 PMCID: PMC10067609 DOI: 10.3389/fped.2023.1154139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Accepted: 02/27/2023] [Indexed: 04/07/2023] Open
Abstract
Background Urinary tract infections (UTI) are common types of bacterial infection in children. UTI treatment is aimed to prevent complications including hypertension, proteinuria, and progression to chronic kidney disease. Activated neutrophils release chromatin-based structures associated with antimicrobial proteins called neutrophil extracellular traps (NETs). We aimed to describe the role of NET-associated markers in children with UTI as well as the role of NETs formation in a mouse model of UTI. Materials and methods Markers of NETs including extracellular DNA (ecDNA), myeloperoxidase (MPO) and cathelicidin were analyzed in children with febrile UTI caused by E. coli (n = 98, aged 0.3-1.3 years) and in healthy controls (n = 50, 0.5-5.2 years). Moreover, an acute experimental model of UTI was performed on PAD4 knock-out mice with diminished NETs formation (n = 18), and on wild-type mice (n = 15). Results Children with UTI had significantly higher urinary NETs markers including total ecDNA, nuclear DNA and mitochondrial DNA, altogether with MPO and cathelicidin. The concentrations of MPO and cathelicidin positively correlated with ecDNA (r = 0.53, p ≤ 0.001; r = 0.56, p ≤ 0.001, respectively) and the number of leukocytes in the urine (r = 0.29, p ≤ 0.05; r = 0.27, p ≤ 0.05, respectively). Moreover, urinary MPO was positively associated with cathelicidin (r = 0.61, p ≤ 0.001). In the experimental model, bacterial load in the bladder (20-fold) and kidneys (300-fold) was significantly higher in PAD4 knock-out mice than in wild-type mice. Conclusion Higher urinary NETs makers-ecDNA, MPO and cathelicidin and their correlation with leukocyturia in children with UTI confirmed our hypothesis about the association between NETs and UTI in children. Higher bacterial load in mice with diminished NETs formation suggests that NETs are not only a simple consequence of UTI, but might play a direct role in the prevention of pyelonephritis and other UTI complications.
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Affiliation(s)
- Katarína Krivošíková
- Department of Pediatrics, National Institute of Children’s Diseases and Faculty of Medicine, Comenius University, Bratislava, Slovakia
| | - Nadja Šupčíková
- Institute of Molecular Biomedicine, Faculty of Medicine, Comenius University, Bratislava, Slovakia
| | - Alexandra Gaál Kovalčíková
- Department of Pediatrics, National Institute of Children’s Diseases and Faculty of Medicine, Comenius University, Bratislava, Slovakia
- Institute of Molecular Biomedicine, Faculty of Medicine, Comenius University, Bratislava, Slovakia
| | - Jakub Janko
- Institute of Molecular Biomedicine, Faculty of Medicine, Comenius University, Bratislava, Slovakia
| | - Michal Pastorek
- Institute of Molecular Biomedicine, Faculty of Medicine, Comenius University, Bratislava, Slovakia
| | - Peter Celec
- Institute of Molecular Biomedicine, Faculty of Medicine, Comenius University, Bratislava, Slovakia
- Institute of Pathophysiology, Faculty of Medicine, Comenius University, Bratislava, Slovakia
| | - Ľudmila Podracká
- Department of Pediatrics, National Institute of Children’s Diseases and Faculty of Medicine, Comenius University, Bratislava, Slovakia
| | - Ľubomíra Tóthová
- Institute of Molecular Biomedicine, Faculty of Medicine, Comenius University, Bratislava, Slovakia
- Correspondence: Ľubomíra Tóthová
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Hemmati S, Rasekhi Kazerooni H. Polypharmacological Cell-Penetrating Peptides from Venomous Marine Animals Based on Immunomodulating, Antimicrobial, and Anticancer Properties. Mar Drugs 2022; 20:md20120763. [PMID: 36547910 PMCID: PMC9787916 DOI: 10.3390/md20120763] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 11/25/2022] [Accepted: 11/30/2022] [Indexed: 12/09/2022] Open
Abstract
Complex pathological diseases, such as cancer, infection, and Alzheimer's, need to be targeted by multipronged curative. Various omics technologies, with a high rate of data generation, demand artificial intelligence to translate these data into druggable targets. In this study, 82 marine venomous animal species were retrieved, and 3505 cryptic cell-penetrating peptides (CPPs) were identified in their toxins. A total of 279 safe peptides were further analyzed for antimicrobial, anticancer, and immunomodulatory characteristics. Protease-resistant CPPs with endosomal-escape ability in Hydrophis hardwickii, nuclear-localizing peptides in Scorpaena plumieri, and mitochondrial-targeting peptides from Synanceia horrida were suitable for compartmental drug delivery. A broad-spectrum S. horrida-derived antimicrobial peptide with a high binding-affinity to bacterial membranes was an antigen-presenting cell (APC) stimulator that primes cytokine release and naïve T-cell maturation simultaneously. While antibiofilm and wound-healing peptides were detected in Synanceia verrucosa, APC epitopes as universal adjuvants for antiviral vaccination were in Pterois volitans and Conus monile. Conus pennaceus-derived anticancer peptides showed antiangiogenic and IL-2-inducing properties with moderate BBB-permeation and were defined to be a tumor-homing peptide (THP) with the ability to inhibit programmed death ligand-1 (PDL-1). Isoforms of RGD-containing peptides with innate antiangiogenic characteristics were in Conus tessulatus for tumor targeting. Inhibitors of neuropilin-1 in C. pennaceus are proposed for imaging probes or therapeutic delivery. A Conus betulinus cryptic peptide, with BBB-permeation, mitochondrial-targeting, and antioxidant capacity, was a stimulator of anti-inflammatory cytokines and non-inducer of proinflammation proposed for Alzheimer's. Conclusively, we have considered the dynamic interaction of cells, their microenvironment, and proportional-orchestrating-host- immune pathways by multi-target-directed CPPs resembling single-molecule polypharmacology. This strategy might fill the therapeutic gap in complex resistant disorders and increase the candidates' clinical-translation chance.
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Affiliation(s)
- Shiva Hemmati
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz 71345-1583, Iran
- Department of Pharmaceutical Biology, Faculty of Pharmaceutical Sciences, UCSI University, Cheras, Kuala Lumpur 56000, Malaysia
- Biotechnology Research Center, Shiraz University of Medical Sciences, Shiraz 71345-1583, Iran
- Correspondence: ; Tel.: +98-7132-424-128
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