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Kusin SB, Fan EM, Christie AL, Zimmern PE. Bacterial species cultured after electrofulguration in women with a history of antibiotic-recalcitrant urinary tract infections frequently compare with pre-fulguration findings: a pilot study. Microbiol Spectr 2024; 12:e0431123. [PMID: 38980026 PMCID: PMC11302007 DOI: 10.1128/spectrum.04311-23] [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: 12/29/2023] [Accepted: 05/10/2024] [Indexed: 07/10/2024] Open
Abstract
Electrofulguration (EF) of areas of chronic cystitis in women with antibiotic-recalcitrant recurrent urinary tract infections (RUTIs) can result in improvement of their urinary tract infections (UTIs). We compared urine culture (UC) findings in patients before and after EF, as well as how they vary with cystitis stage at the time of EF, to evaluate for persistent species. After obtaining institutional review board approval, we retrospectively reviewed a prospectively maintained database of EF patients for those with positive UC findings in the 3-6 months preceding EF. Patient pre-EF UC was then compared with first positive UC after EF prompted by a new symptomatic UTI episode, with the hypothesis that the same species will be identified before and after EF. Exclusion criteria included UC from outside institution, neurogenic bladder, and need for catheterization. Ninety-nine women with pre- or post-EF UC-recorded organisms met the study criteria. The median age was 65 years (interquartile range 64-74), with a median time to first positive culture following fulguration of 9.7 months. For 26 patients with positive cultures both pre- and post-EF, the same organism was present in both cultures in 73% of the patients, with predominantly Escherichia coli. EF was effective at reducing the rate of UTIs in this population. For women undergoing EF for antibiotic-recalcitrant RUTIs and associated chronic cystitis lesions, 73% of those with a UC obtained at the time of a first symptomatic recurrent UTI episode post-EF expressed the same organism as before EF. Further study is needed to better understand the evolution of the microbiome post-EF.IMPORTANCEAmong women who experience a recurrent urinary tract infection after a fulguration procedure on areas of chronic cystitis in their bladder, there are no data available on whether the bacterial species found in urine cultures are the same or different from those present before fulguration. By removing the inflamed surface layer of cystitis during fulguration, it is possible that the procedure unmasks deep-seated bacteria. The bacterial kingdom in the bladder wall of these chronically infected women may be different from what is expressed sporadically in urine cultures. Confirming prior studies, we found that fulguration in women with antibiotic-recalcitrant recurrent urinary tract infections and cystitis lesions was effective at reducing the rate of urinary tract infections. At the time of a first symptomatic recurrent UTI episode post-fulguration, 73% expressed the same organism in urine culture as before fulguration. Further study is needed to better understand the evolution of the microbiome post-EF. This article evaluates persistent infections after electrofulguration of areas with chronic cystitis in post-menopausal women with antibiotic-recalcitrant recurrent urinary tract infections. Pre-fulguration urine cultures were compared with the first positive urine culture prompted by a new symptomatic UTI episode after electrofulguration, with the hypothesis that the same species will be identified before and after the fulguration procedure. Electrofulguration was effective at reducing the rate of UTIs in this population. However, 73% of those with a urine culture obtained at the time of a first symptomatic recurrent UTI episode post-electrofulguration expressed the same organism (predominantly Escherichia coli) as before the fulguration procedure. Further study is needed to better understand the evolution of the microbiome after electrofulguration.
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Affiliation(s)
- Samuel B. Kusin
- Department of Urology, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Ethan M. Fan
- Department of Urology, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Alana L. Christie
- Simmons Comprehensive Cancer Center Biostatistics, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Philippe E. Zimmern
- Department of Urology, University of Texas Southwestern Medical Center, Dallas, Texas, USA
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Gaitonde S, Kuprasertkul A, Christie AL, Alhalabi F, Crivelli JJ, Zimmern PE. Comparing costs associated with management of antibiotic-recalcitrant recurrent urinary tract infections for one year pre- and post-electrofulguration. Neurourol Urodyn 2024. [PMID: 38989652 DOI: 10.1002/nau.25545] [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: 11/21/2023] [Revised: 05/02/2024] [Accepted: 06/21/2024] [Indexed: 07/12/2024]
Abstract
INTRODUCTION To quantify and compare recurrent urinary tract infection costs between 1 year before and 1 year after electrofulguration. METHODS Following IRB approval, a well-characterized cohort of non-neurogenic women with >3 symptomatic urinary tract infections (UTIs)/year, a negative upper and lower urinary tract evaluation, and inflammatory bladder lesions (cystitis) on office cystoscopy who underwent fulguration of these lesions was analyzed. Cost of visits, imaging, labs, and medications were summed for 1-year pre- and post-fulguration using the Medicare Physician Fee Schedule, local pharmacy pricing, and institutional expenses. Before fulguration, all patients underwent clinic visit, noninvasive flow study, and flexible cystoscopy, and post-fulguration, 6-week follow-up visit and 6-month cystoscopy. RESULTS Ninety-three women met study criteria (mean age 64), with 100% 1-year follow-up. Before fulguration, 73% of patients used daily antibiotic suppression, 6% self-start antibiotics, and 5% postcoital prophylaxis. Some also used vaginal estrogens (17%), urinary analgesics (13%), and cranberry or d-mannose supplements (7%). At 1 year post-fulguration, 82% had 0-1 infections and no cystoscopy evidence of cystitis, while 14% required additional fulguration for new cystitis sites and recurrent infections. Patients had on average 0.7 infections in the 1-year post-fulguration, which was significantly lower than pre-fulguration (p < 0.05). Mean 1-year pre-fulguration cost was $1328 (median $1071, range $291-$5564). Mean 1-year post-fulguration cost was $617 (median $467, range $275-$4580). On average, post-fulguration costs were $710 lower than pre-EF (p < 0.05). CONCLUSION For women with antibiotic-refractory recurrent urinary tract infections and cystoscopy evidence of cystitis, fulguration was associated with a significant reduction in UTI-related costs in the 1-year post-fulguration.
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Affiliation(s)
- Shivani Gaitonde
- Department of Urology, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Amy Kuprasertkul
- Division of Urologic Surgery, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Alana L Christie
- Simmons Comprehensive Cancer Center Biostatistics, Southwestern Medical Center, University of Texas, Dallas, Texas, USA
| | - Feras Alhalabi
- Department of Urology, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Joseph J Crivelli
- Department of Urology, The University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Philippe E Zimmern
- Department of Urology, University of Texas Southwestern Medical Center, Dallas, Texas, USA
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Gadhvi JG, Kenee PRM, Lutz KC, Khan F, Li Q, Zimmern PE, De Nisco NJ. Bladder-resident bacteria associated with increased risk of recurrence after electrofulguration in women with antibiotic-recalcitrant urinary tract infection. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2024:2024.07.03.24309902. [PMID: 39006411 PMCID: PMC11245057 DOI: 10.1101/2024.07.03.24309902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/16/2024]
Abstract
Background Antibiotic-recalcitrant recurrent urinary tract infection (rUTI) is has become increasingly observed in postmenopausal women. Therefore, when standard antibiotic therapies have failed, some elect electrofulguration (EF) of areas of chronic cystitis when detected on office cystoscopy. EF is thought to remove tissue-resident bacteria that have been previously detected in the bladder walls of postmenopausal women with rUTI. We hypothesized that increased bladder bacterial burden may be associated with incomplete rUTI resolution following EF. Methods Following IRB approval, bladder biopsies were obtained from 34 consenting menopausal women electing EF for the advanced management of rUTI. 16S rRNA FISH was performed using both universal and Escherichia probes and tissue-resident bacterial load was quantified. Time to UTI relapse after EF was recorded during a six-month follow-up period and the association of bladder bacterial burden and clinical covariates with UTI relapse was assessed. Results We observed bladder-resident Escherichia in 52% of all participants and in 92% of participants with recent E. coli UTI. Time-to-relapse analysis revealed that women with high bladder bacterial burden as detected by the universal probe had a significantly ( p =0.035) higher risk of UTI within six months of EF (HR=3.15, 95% CI: 1.09-9.11). Interestingly, bladder-resident Escherichia was not significantly associated ( p =0.26) with a higher risk of UTI relapse (HR= 2.14, 95% CI: 0.58-7.90). Conclusions We observed that total bladder bacterial burden was associated with a 3.1x increased risk of rUTI relapse within six months. Continued analysis of the relationship between bladder bacterial burden and rUTI outcomes may provide insight into the management of these challenging patients.
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George I, Kalairaj MS, Zimmern PE, Ware TH, Subashchandrabose S. Competitive fitness of asymptomatic bacteriuria E. coli strain 83972 against uropathogens in human urine. Infect Immun 2024; 92:e0017324. [PMID: 38780216 PMCID: PMC11237815 DOI: 10.1128/iai.00173-24] [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: 04/15/2024] [Accepted: 05/04/2024] [Indexed: 05/25/2024] Open
Abstract
Urinary tract infection (UTI) is one of the most common bacterial infections worldwide. The main causative agent of UTI is uropathogenic Escherichia coli (UPEC). There is an immediate need for novel prophylactic and treatment strategies against UTI because of the increasing incidence of antimicrobial resistance among uropathogens. ABU 83972, an asymptomatic bacteriuria-causing E. coli strain, prevents UTI by suppressing the colonization of UPEC. However, the nature of competition and growth repression of UPEC by ABU 83972 is unclear and is the subject of our investigation. Here, we characterized the growth kinetics of ABU 83972 and uropathogens in human urine and laboratory media. Next, we performed a series of competitive co-culture experiments where ABU 83972 and uropathogens were inoculated at a 1:1 ratio in human urine and in various media, and their relative abundance was determined. In human urine, ABU 83972 outcompeted UPEC and additional uropathogens, reaching up to 90% of the total population after 24 hours of incubation. In contrast, UPEC outcompeted ABU 83972 in LB and M9 minimal media and exhibited superior colonization than ABU 83972 in the mouse urinary bladder. Since engineered living materials (ELMs) can be used to retain an organism of interest in a particular location, we developed ABU 83972-containing ELMs that effectively outcompeted UPEC in human urine. In summary, our work establishes that ABU 83972 outcompetes UPEC in a milieu- and cell-density-dependent manner, highlighting the importance of the metabolites and nutrients found in the human urine as determinants of the competitive fitness of ABU 83972.
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Affiliation(s)
- Iris George
- Department of Veterinary Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas, USA
| | | | - Philippe E Zimmern
- Department of Urology, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Taylor H Ware
- Department of Biomedical Engineering, Texas A&M University, College Station, Texas, USA
- Department of Materials Science and Engineering, Texas A&M University, College Station, Texas, USA
| | - Sargurunathan Subashchandrabose
- Department of Veterinary Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas, USA
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Urs K, Zimmern PE, Reitzer L. Abundant urinary amino acids activate glutamine synthetase-encoding glnA by two different mechanisms in Escherichia coli. J Bacteriol 2024; 206:e0037623. [PMID: 38358279 PMCID: PMC10955845 DOI: 10.1128/jb.00376-23] [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: 11/02/2023] [Accepted: 01/31/2024] [Indexed: 02/16/2024] Open
Abstract
Growth of uropathogenic Escherichia coli in the bladder induces transcription of glnA which codes for the ammonia-assimilating glutamine synthetase (GS) despite the normally suppressive high ammonia concentration. We previously showed that the major urinary component, urea, induces transcription from the Crp-dependent glnAp1 promoter, but the urea-induced transcript is not translated. Our purpose here was to determine whether the most abundant urinary amino acids, which are known to inhibit GS activity in vitro, also affect glnA transcription in vivo. We found that the abundant amino acids impaired growth, which glutamine and glutamate reversed; this implies inhibition of GS activity. In strains with deletions of crp and glnG that force transcription from the glnAp2 and glnAp1 promoters, respectively, we examined growth and glnA transcription with a glnA-gfp transcriptional fusion and quantitative reverse transcription PCR with primers that can distinguish transcription from the two promoters. The abundant urinary amino acids stimulated transcription from the glnAp2 promoter in the absence of urea but from the glnAp1 promoter in the presence of urea. However, transcription from glnAp1 did not produce a translatable mRNA or GS as assessed by a glnA-gfp translational fusion, enzymatic assay of GS, and Western blot to detect GS antigen in urea-containing media. We discuss these results within the context of the extremely rapid growth of uropathogenic E. coli in urine, the different factors that control the two glnA promoters and possible mechanisms that either overcome or bypass the urea-imposed block of glutamine synthesis during bacterial growth in urine.IMPORTANCEKnowledge of the regulatory mechanisms for genes expressed at the site of infection provides insight into the virulence of pathogenic bacteria. During urinary tract infections-most often caused by Escherichia coli-growth in urine induces the glnA gene which codes for glutamine synthetase. The most abundant urinary amino acids amplified the effect of urea which resulted in hypertranscription from the glnAp1 promoter and, unexpectedly, an untranslated transcript. E. coli must overcome this block in glutamine synthesis during growth in urine, and the mechanism of glutamine acquisition or synthesis may suggest a possible therapy.
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Affiliation(s)
- Karthik Urs
- Department of Biological Sciences, University of Texas at Dallas, Richardson, Texas, USA
| | - Philippe E. Zimmern
- Department of Urology, University of Texas Southwestern Medical School, Dallas, Texas, USA
| | - Larry Reitzer
- Department of Biological Sciences, University of Texas at Dallas, Richardson, Texas, USA
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Sawant NV, Chang SS, Pandit KA, Khekare P, Warner WR, Zimmern PE, De Nisco NJ. VesiX cetylpyridinium chloride is rapidly bactericidal and reduces uropathogenic Escherichia coli bladder epithelial cell invasion in vitro. Microbiol Spectr 2024; 12:e0271223. [PMID: 38240572 PMCID: PMC10913388 DOI: 10.1128/spectrum.02712-23] [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: 06/29/2023] [Accepted: 12/11/2023] [Indexed: 03/06/2024] Open
Abstract
Management of urinary tract infection (UTI) in postmenopausal women can be challenging. The recent rise in resistance to most of the available oral antibiotic options together with high recurrence rate in postmenopausal women has further complicated treatment of UTI. As such, intravesical instillations of antibiotics like gentamicin are being investigated as an alternative to oral antibiotic therapies. This study evaluates the efficacy of the candidate intravesical therapeutic VesiX, a solution containing the cationic detergent Cetylpyridinium chloride, against a broad range of uropathogenic bacterial species clinically isolated from postmenopausal women with recurrent UTI (rUTI). We also evaluate the cytotoxicity of VesiX against cultured bladder epithelial cells and find that low concentrations of 0.0063% and 0.0125% provide significant bactericidal effect toward diverse bacterial species including uropathogenic Escherichia coli (UPEC), Klebsiella pneumoniae, Enterococcus faecalis, Pseudomonas aeruginosa, and Proteus mirabilis while minimizing cytotoxic effects against cultured 5637 bladder epithelial cells. Lastly, to begin to evaluate the potential utility of using VesiX in combination therapy with existing intravesical therapies for rUTI, we investigate the combined effects of VesiX and the intravesical antibiotic gentamicin. We find that VesiX and gentamicin are not antagonistic and are able to reduce levels of intracellular UPEC in cultured bladder epithelial cells. IMPORTANCE When urinary tract infections (UTIs), which affect over 50% of women, become resistant to available antibiotic therapies dangerous complications like kidney infection and lethal sepsis can occur. New therapeutic paradigms are needed to expand our arsenal against these difficult to manage infections. Our study investigates VesiX, a Cetylpyridinium chloride (CPC)-based therapeutic, as a candidate broad-spectrum antimicrobial agent for use in bladder instillation therapy for antibiotic-resistant UTI. CPC is a cationic surfactant that is FDA-approved for use in mouthwashes and is used as a food additive but has not been extensively evaluated as a UTI therapeutic. Our study is the first to investigate its rapid bactericidal kinetics against diverse uropathogenic bacterial species isolated from postmenopausal women with recurrent UTI and host cytotoxicity. We also report that together with the FDA-approved bladder-instillation agent gentamicin, VesiX was able to significantly reduce intracellular populations of uropathogenic bacteria in cultured bladder epithelial cells.
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Affiliation(s)
- Namrata V. Sawant
- Department of Biological Sciences, The University of Texas at Dallas, Richardson, Texas, USA
| | - Samuel S. Chang
- Department of Biological Sciences, The University of Texas at Dallas, Richardson, Texas, USA
| | - Krutika A. Pandit
- Department of Biological Sciences, The University of Texas at Dallas, Richardson, Texas, USA
| | - Prachi Khekare
- Department of Biological Sciences, The University of Texas at Dallas, Richardson, Texas, USA
| | | | - Philippe E. Zimmern
- Department of Urology, The University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Nicole J. De Nisco
- Department of Biological Sciences, The University of Texas at Dallas, Richardson, Texas, USA
- Department of Urology, The University of Texas Southwestern Medical Center, Dallas, Texas, USA
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Gleicher S, Karram M, Wein AJ, Dmochowski RR. Recurrent and complicated urinary tract infections in women: Utility of advanced testing to enhance care. Neurourol Urodyn 2024; 43:161-166. [PMID: 37822027 DOI: 10.1002/nau.25280] [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: 04/25/2023] [Revised: 08/03/2023] [Accepted: 08/28/2023] [Indexed: 10/13/2023]
Abstract
BACKGROUND The United States currently faces a public health crisis with regarding to antibiotic-resistant bacteria, and new urinary tract infection (UTI) diagnostics are needed. Women with recurrent UTI (rUTI) and complicated UTI (cUTI) are at particular risk given their complexity and the paucity of adequate testing modalities. The standard urine culture (SUC) is the cornerstone for diagnosis, but it has many shortcomings. These pitfalls lead to dissatisfaction and frustration among women afflicted with rUTI and cUTI, as well as overuse of antibiotics. One innovation is PCR UTI testing, which has been shown to outperform SUC among symptomatic women. AIMS This article discusses UTI PCR testing, as well as a possible role in clinical practice. MATERIALS AND METHODS Published literature was reviewed and summarized. RESULTS Management of rUTI and cUTI is complex, and providers should have all diagnostics available to facilitate providing optimal care. Urine PCR testing faces reimbursement issues despite fulfilling clinical indication parameters as described by insurance companies. DISCUSSION The role of UTI PCR testing remains unclear. Reimbursement issues have led to underuse and limited real-world outcomes reinforcing benefit. CONCLUSION This study proposes an algorithm for PCR testing among women with rUTI and cUTI.
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Affiliation(s)
| | - Mickey Karram
- The Christ Hospital Physicians, Cincinnati, Ohio, USA
| | - Alan J Wein
- University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania, USA
| | - Roger R Dmochowski
- Department of Urology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
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Lee EY, Copaescu AM, Trubiano JA, Phillips EJ, Wolfson AR, Ramsey A. Drug Allergy in Women. THE JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY. IN PRACTICE 2023; 11:3615-3623. [PMID: 37805007 DOI: 10.1016/j.jaip.2023.09.031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 08/21/2023] [Accepted: 09/27/2023] [Indexed: 10/09/2023]
Abstract
Across all settings, women self-report more drug allergies than do men. Although there is epidemiologic evidence of increased drug allergy labeling in postpubertal females, the evidence base for female sex as a risk factor for true immune-mediated drug hypersensitivity reactions (DHRs), particularly in fatal drug-induced anaphylaxis, is low. A focus on the known immunologic mechanisms described in immediate and delayed DHR, layered on known hormonal and genetic sex differences that drive other immune-mediated diseases, could be the key to understanding biological sex variations in DHR. Particular conditions that highlight the impact of drug allergy in women include (1) pregnancy, in which a drug allergy label is associated with increased maternal and fetal complications; (2) multiple drug intolerance syndrome, associated with anxiety and depression; and (3) female-predominant autoimmune medical conditions in the context of mislabeling of the drug allergy or increased underlying risk. In this review, we describe the importance of drug allergy in the female population, mainly focusing on the epidemiology and risk, the mechanisms, and the associated conditions and psychosocial factors. By performing a detailed analysis of the current literature, we provide focused conclusions and identify existing knowledge gaps that should be prioritized for future research.
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Affiliation(s)
- Erika Yue Lee
- Division of Clinical Immunology and Allergy, Department of Medicine, University of Toronto, Toronto, Ontario, Canada; Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario, Canada; Eliot Phillipson Clinician-Scientist Training Program, University of Toronto, Toronto, Ontario, Canada
| | - Ana Maria Copaescu
- Centre for Antibiotic Allergy and Research, Department of Infectious Diseases, Austin Health, Heidelberg, Victoria, Australia; Division of Allergy and Clinical Immunology, Department of Medicine, McGill University Health Centre, McGill University, Montreal, Quebec, Canada; Research Institute of McGill University Health Centre, McGill University, McGill University Health Centre, Montreal, Quebec, Canada; Department of Medicine, Austin Health, University of Melbourne, Heidelberg, Victoria, Australia
| | - Jason A Trubiano
- Centre for Antibiotic Allergy and Research, Department of Infectious Diseases, Austin Health, Heidelberg, Victoria, Australia; National Centre for Infections in Cancer, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia; Department of Infectious Diseases, University of Melbourne at the Peter Doherty Institute for Infection and Immunity, Melbourne, Victoria, Australia
| | - Elizabeth J Phillips
- Center for Drug Safety and Immunology, Vanderbilt University Medical Centre, Nashville, Tenn; Institute for Immunology and Infectious Diseases, Murdoch University, Murdoch, Western Australia, Australia
| | - Anna R Wolfson
- Division of Rheumatology, Allergy, and Immunology, Department of Medicine, Massachusetts General Hospital, Boston, Mass; Department of Medicine, Harvard Medical School, Massachusetts General Hospital, Boston, Mass
| | - Allison Ramsey
- Rochester Regional Health, Rochester, NY; Clinical Assistant Professor of Medicine, Department of Allergy/Immunology/Rheumatology, University of Rochester, Rochester, NY.
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Urs K, Zimmern PE, Reitzer L. Control of glnA (glutamine synthetase) expression by urea in non-pathogenic and uropathogenic Escherichia coli. J Bacteriol 2023; 205:e0026823. [PMID: 37902379 PMCID: PMC10662117 DOI: 10.1128/jb.00268-23] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Accepted: 09/25/2023] [Indexed: 10/31/2023] Open
Abstract
IMPORTANCE The bacteria that cause urinary tract infections often become resistant to antibiotic treatment, and genes expressed during an infection could suggest non-antibiotic targets. During growth in urine, glnA (specifying glutamine synthetase) expression is high, but our results show that urea induces glnA expression independent of the regulation that responds to nitrogen limitation. Although our results suggest that glnA is an unlikely target for therapy because of variation in urinary components between individuals, our analysis of glnA expression in urine-like environments has revealed previously undescribed layers of regulation. In other words, regulatory mechanisms that are discovered in a laboratory environment do not necessarily operate in the same way in nature.
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Affiliation(s)
- Karthik Urs
- Department of Biological Sciences, University of Texas at Dallas, Richardson, Texas, USA
| | - Philippe E. Zimmern
- Department of Urology, University of Texas Southwestern Medical School, Dallas, Texas, USA
| | - Larry Reitzer
- Department of Biological Sciences, University of Texas at Dallas, Richardson, Texas, USA
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Hogins J, Xuan Z, Zimmern PE, Reitzer L. The distinct transcriptome of virulence-associated phylogenetic group B2 Escherichia coli. Microbiol Spectr 2023; 11:e0208523. [PMID: 37724859 PMCID: PMC10580932 DOI: 10.1128/spectrum.02085-23] [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: 05/18/2023] [Accepted: 07/28/2023] [Indexed: 09/21/2023] Open
Abstract
Escherichia coli strains of phylogenetic group B2 are often associated with urinary tract infections (UTIs) and several other diseases. Recent genomic and transcriptomic analyses have not suggested or identified specific genes required for virulence, but have instead suggested multiple virulence strategies and complex host-pathogen interactions. Previous analyses have not compared core gene expression between phylogenetic groups or between pathogens and nonpathogens within phylogenetic groups. We compared the core gene expression of 35 strains from three phylogenetic groups that included both pathogens and nonpathogens after growth in a medium that allowed comparable growth of both types of strains. K-means clustering suggested a B2 cluster with 17 group B2 strains and two group A strains; an AD cluster with six group A strains, five group D strains and one B2 strain; and four outliers which included the highly studied model uropathogenic E. coli strains UTI89 and CFT073. Half of the core genes were differentially expressed between B2 and AD cluster strains, including transcripts of genes for all aspects of macromolecular synthesis-replication, transcription, translation, and peptidoglycan synthesis-energy metabolism, and environmental-sensing transcriptional regulators. Notably, core gene expression between nonpathogenic and uropathogenic transcriptomes within phylogenetic groups did not differ. If differences between pathogens and nonpathogens exist, then the differences do not require transcriptional reprogramming. In summary, B2 cluster strains have a distinct transcription pattern that involves hundreds of genes. We propose that this transcription pattern is one factor that contributes to virulence. IMPORTANCE Escherichia coli is a diverse species and an opportunistic pathogen that is associated with various diseases, such as urinary tract infections. When examined, phylogenetic group B2 strains are more often associated with these diseases, but the specific properties that contribute to their virulence are not known. From a comparative transcriptomic analysis, we found that group B2 strains grown in a nutrient-rich medium had a distinct transcription pattern, which is the first evidence that core gene expression differs between phylogenetic groups. Understanding the consequences of group B2 transcription pattern will provide important information on basic E. coli biology, the basis for E. coli virulence, and possibly for developing therapies for a majority of urinary tract infections and other group B2-associated diseases.
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Affiliation(s)
- Jacob Hogins
- Department of Biological Sciences, The University of Texas at Dallas, Richardson, Texas, USA
| | - Zhenyu Xuan
- Department of Biological Sciences, The University of Texas at Dallas, Richardson, Texas, USA
| | - Philippe E. Zimmern
- Department of Urology, The University of Texas Southwestern, Dallas, Texas, USA
| | - Larry Reitzer
- Department of Biological Sciences, The University of Texas at Dallas, Richardson, Texas, USA
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Zimmern PE, Sawant NV, Chang SS, Warner RW, De Nisco NJ. Intravesical VesiX as a Last Resort Therapy in Women With Antibiotic-Refractory Recurrent Urinary Tract Infections Contemplating Bladder Removal: A Preliminary Report. Ann Pharmacother 2023; 57:350-351. [PMID: 35838251 DOI: 10.1177/10600280221112111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Kustrimovic N, Bombelli R, Baci D, Mortara L. Microbiome and Prostate Cancer: A Novel Target for Prevention and Treatment. Int J Mol Sci 2023; 24:ijms24021511. [PMID: 36675055 PMCID: PMC9860633 DOI: 10.3390/ijms24021511] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 01/07/2023] [Accepted: 01/09/2023] [Indexed: 01/14/2023] Open
Abstract
Growing evidence of the microbiome's role in human health and disease has emerged since the creation of the Human Microbiome Project. Recent studies suggest that alterations in microbiota composition (dysbiosis) may play an essential role in the occurrence, development, and prognosis of prostate cancer (PCa), which remains the second most frequent male malignancy worldwide. Current advances in biological technologies, such as high-throughput sequencing, transcriptomics, and metabolomics, have enabled research on the gut, urinary, and intra-prostate microbiome signature and the correlation with local and systemic inflammation, host immunity response, and PCa progression. Several microbial species and their metabolites facilitate PCa insurgence through genotoxin-mediated mutagenesis or by driving tumor-promoting inflammation and dysfunctional immunosurveillance. However, the impact of the microbiome on PCa development, progression, and response to treatment is complex and needs to be fully understood. This review addresses the current knowledge on the host-microbe interaction and the risk of PCa, providing novel insights into the intraprostatic, gut, and urinary microbiome mechanisms leading to PCa carcinogenesis and treatment response. In this paper, we provide a detailed overview of diet changes, gut microbiome, and emerging therapeutic approaches related to the microbiome and PCa. Further investigation on the prostate-related microbiome and large-scale clinical trials testing the efficacy of microbiota modulation approaches may improve patient outcomes while fulfilling the literature gap of microbial-immune-cancer-cell mechanistic interactions.
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Affiliation(s)
- Natasa Kustrimovic
- Center for Translational Research on Autoimmune and Allergic Disease—CAAD, Università del Piemonte Orientale, 28100 Novara, Italy
| | - Raffaella Bombelli
- Immunology and General Pathology Laboratory, Department of Biotechnology and Life Sciences, University of Insubria, 21100 Varese, Italy
| | - Denisa Baci
- Immunology and General Pathology Laboratory, Department of Biotechnology and Life Sciences, University of Insubria, 21100 Varese, Italy
- Molecular Cardiology Laboratory, IRCCS-Policlinico San Donato, San Donato Milanese, 20097 Milan, Italy
| | - Lorenzo Mortara
- Immunology and General Pathology Laboratory, Department of Biotechnology and Life Sciences, University of Insubria, 21100 Varese, Italy
- Correspondence:
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13
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Ganguly A, Ebrahimzadeh T, Komarovsky J, Zimmern PE, De Nisco NJ, Prasad S. DigEST
: Digital plug‐n‐probe disease Endotyping Sensor Technology. Bioeng Transl Med 2022. [DOI: 10.1002/btm2.10437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Affiliation(s)
- Antra Ganguly
- Department of Bioengineering University of Texas at Dallas Richardson Texas USA
| | - Tahmineh Ebrahimzadeh
- Department of Biological Sciences University of Texas at Dallas Richardson Texas USA
| | - Jessica Komarovsky
- Department of Biological Sciences University of Texas at Dallas Richardson Texas USA
| | - Philippe E. Zimmern
- Department of Urology University of Texas Southwestern Medical Center Dallas Texas USA
| | - Nicole J. De Nisco
- Department of Biological Sciences University of Texas at Dallas Richardson Texas USA
| | - Shalini Prasad
- Department of Bioengineering University of Texas at Dallas Richardson Texas USA
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14
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Neugent ML, Kumar A, Hulyalkar NV, Lutz KC, Nguyen VH, Fuentes JL, Zhang C, Nguyen A, Sharon BM, Kuprasertkul A, Arute AP, Ebrahimzadeh T, Natesan N, Xing C, Shulaev V, Li Q, Zimmern PE, Palmer KL, De Nisco NJ. Recurrent urinary tract infection and estrogen shape the taxonomic ecology and function of the postmenopausal urogenital microbiome. Cell Rep Med 2022; 3:100753. [PMID: 36182683 PMCID: PMC9588997 DOI: 10.1016/j.xcrm.2022.100753] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 01/28/2022] [Accepted: 09/08/2022] [Indexed: 11/24/2022]
Abstract
Postmenopausal women are severely affected by recurrent urinary tract infection (rUTI). The urogenital microbiome is a key component of the urinary environment. However, changes in the urogenital microbiome underlying rUTI susceptibility are unknown. Here, we perform shotgun metagenomics and advanced culture on urine from a controlled cohort of postmenopausal women to identify urogenital microbiome compositional and function changes linked to rUTI susceptibility. We identify candidate taxonomic biomarkers of rUTI susceptibility in postmenopausal women and an enrichment of lactobacilli in postmenopausal women taking estrogen hormone therapy. We find robust correlations between Bifidobacterium and Lactobacillus and urinary estrogens in women without urinary tract infection (UTI) history. Functional analyses reveal distinct metabolic and antimicrobial resistance gene (ARG) signatures associated with rUTI. Importantly, we find that ARGs are enriched in the urogenital microbiomes of women with rUTI history independent of current UTI status. Our data suggest that rUTI and estrogen shape the urogenital microbiome in postmenopausal women.
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Affiliation(s)
- Michael L Neugent
- Department of Biological Sciences, The University of Texas at Dallas, Richardson, TX, USA
| | - Ashwani Kumar
- Eugene McDermott Center for Human Growth and Development, The University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Neha V Hulyalkar
- Department of Biological Sciences, The University of Texas at Dallas, Richardson, TX, USA
| | - Kevin C Lutz
- Department of Mathematical Sciences, The University of Texas at Dallas, Richardson, TX, USA
| | - Vivian H Nguyen
- Department of Biological Sciences, The University of Texas at Dallas, Richardson, TX, USA
| | - Jorge L Fuentes
- Department of Urology, The University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Cong Zhang
- Department of Mathematical Sciences, The University of Texas at Dallas, Richardson, TX, USA
| | - Amber Nguyen
- Department of Biological Sciences, The University of Texas at Dallas, Richardson, TX, USA
| | - Belle M Sharon
- Department of Biological Sciences, The University of Texas at Dallas, Richardson, TX, USA
| | - Amy Kuprasertkul
- Department of Urology, The University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Amanda P Arute
- Department of Biological Sciences, The University of Texas at Dallas, Richardson, TX, USA
| | - Tahmineh Ebrahimzadeh
- Department of Biological Sciences, The University of Texas at Dallas, Richardson, TX, USA
| | - Nitya Natesan
- Department of Biological Sciences, The University of Texas at Dallas, Richardson, TX, USA
| | - Chao Xing
- Eugene McDermott Center for Human Growth and Development, The University of Texas Southwestern Medical Center, Dallas, TX, USA; Department of Bioinformatics, The University of Texas Southwestern Medical Center, Dallas, TX, USA; Department of Population and Data Sciences, The University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Vladimir Shulaev
- Department of Biological Sciences, The University of North Texas, Denton, TX, USA; Advanced Environmental Research Institute, The University of North Texas, Denton, TX, USA
| | - Qiwei Li
- Department of Mathematical Sciences, The University of Texas at Dallas, Richardson, TX, USA
| | - Philippe E Zimmern
- Department of Urology, The University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Kelli L Palmer
- Department of Biological Sciences, The University of Texas at Dallas, Richardson, TX, USA
| | - Nicole J De Nisco
- Department of Biological Sciences, The University of Texas at Dallas, Richardson, TX, USA; Department of Urology, The University of Texas Southwestern Medical Center, Dallas, TX, USA.
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15
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Role of Flexible Cystoscopy in the Management of Postmenopausal Women with Recurrent Urinary Tract Infections. Urology 2022; 169:65-69. [DOI: 10.1016/j.urology.2022.07.040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 07/21/2022] [Accepted: 07/25/2022] [Indexed: 11/19/2022]
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16
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Reduced urothelial expression of uroplakin-IIIa in cystitis areas in bladders of postmenopausal women with recurrent urinary tract infections: pilot study. World J Urol 2022; 40:1723-1730. [PMID: 35665841 DOI: 10.1007/s00345-022-04050-y] [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: 02/07/2022] [Accepted: 04/30/2022] [Indexed: 10/18/2022] Open
Abstract
PURPOSE To study human bladder biopsies to investigate urothelial response to UTI, expression of uroplakin, and urothelial response after healing from cystoscopy with electrofulguration (CEF) treatment for antibiotic-recalcitrant RUTI. METHODS Following IRB approval, cold cup bladder biopsies from "no cystitis" and "cystitis" regions were obtained from women with antibiotic-recalcitrant rUTI undergoing CEF under anesthesia. "No cystitis" and "cystitis" biopsies from 14 patients (5 had prior CEF, 9 naïve) were analyzed by immunofluorescence (IF) confocal microscopy using antibodies against uroplakin-IIIa. For an additional 6 patients (2 prior CEF, 4 naïve), only "cystitis" area biopsies were taken and analyzed. Cytokeratin 5 (marker for squamous metaplasia) staining was performed on 14 patients. RESULTS In healthy tissue, uroplakin-IIIa staining was observed as a contiguous line on the luminal surface of umbrella cells. In "cystitis" areas for 19/20 patients, there was either no uroplakin-IIIa staining observed or spotty (+) staining. The "cystitis" regions of all patients had less intense uroplakin-IIIa staining compared to the matched "no cystitis" area in the same patient. In patients post-CEF but requiring repeat EF for persistent RUTI lesions, healed areas served as control and in 3 of 7 patients no uroplakin-IIIa staining was observed. Squamous metaplasia was observed in 10 patients. CONCLUSION In bladders of postmenopausal women with antibiotic-recalcitrant RUTI, areas with visible cystitis expressed less uroplakin-IIIa, supporting the model of urothelial exfoliation in response to UTI.
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17
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Kenee PRM, Christie AL, Zimmern PE. Cranberry Supplement, D-Mannose, and Other OTC Modalities for Prevention of Recurrent UTI in Women Post-Electrofulguration. Int J Womens Health 2022; 14:643-653. [PMID: 35535150 PMCID: PMC9078870 DOI: 10.2147/ijwh.s355469] [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: 01/11/2022] [Accepted: 04/23/2022] [Indexed: 11/25/2022] Open
Abstract
Purpose To assess patient reliance on various over-the-counter (OTC) modalities used for prevention of recurrent urinary tract infection (RUTI) after electrofulguration (EF). Patients and Methods Following IRB approval, qualifying women were offered a short survey over the phone by a medical researcher to collect information about their use of various OTC modalities for prophylaxis of RUTI. Data was compared between two cohorts, ≥70 years old and <70 years old, using chi-squared and Student’s t-tests. Results From a database of 324 patients, 163 accepted the interview. 17% (28/163) reported current use of cranberry supplements, 10% (16/163) D-mannose supplements, and 42% (69/163) another non-prescription modality for RUTI prophylaxis. The non-geriatric (<70 years old) cohort spent, on average, $80 less annually on cranberry/D-mannose supplements (P=0.043) than the geriatric cohort and were more likely to use non-prescription modalities for the prevention of UTI (52% vs 30%; P=0.0061). Individuals using D-mannose were also much more likely to purchase their product online compared to those using cranberry supplements (85% vs 56%). Across all modalities, the perceived benefit difference in reducing UTI/year ranged from a median of 0 for Pyridium® (phenazopyridine hydrochloride) to four for probiotics, with D-mannose and cranberry at two/year, and those increasing daily fluid consumption at 2.5 fewer UTI/year. Conclusion Continued use of non-prescription modalities for RUTI prophylaxis were common among women with an EF history, but varied based on age groups. Across both age cohorts, annual expenditure and perceived benefit also varied among different OTC prophylactic modalities. Awareness of type and method of OTC modality implementation by patients with RUTI is essential to aligning use with current field recommendations.
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Affiliation(s)
- Parker R M Kenee
- Department of Urology, UT Southwestern Medical Center, Dallas, TX, 75290-9110, USA
| | - Alana L Christie
- Simmons Comprehensive Cancer Center Biostatistics, UT Southwestern Medical Center, Dallas, TX, 75390-8852, USA
| | - Philippe E Zimmern
- Department of Urology, UT Southwestern Medical Center, Dallas, TX, 75290-9110, USA
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18
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Nguyen VH, Khan F, Shipman BM, Neugent ML, Hulyalkar NV, Cha NY, Zimmern PE, De Nisco NJ. A Semi-Quantitative Assay to Measure Glycosaminoglycan Degradation by the Urinary Microbiota. Front Cell Infect Microbiol 2022; 11:803409. [PMID: 35047421 PMCID: PMC8762050 DOI: 10.3389/fcimb.2021.803409] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Accepted: 11/30/2021] [Indexed: 11/28/2022] Open
Abstract
Glycosaminoglycans (GAGs) are linear polysaccharides and are among the primary components of mucosal surfaces in mammalian systems. The GAG layer lining the mucosal surface of the urinary tract is thought to play a critical role in urinary tract homeostasis and provide a barrier against urinary tract infection (UTI). This key component of the host-microbe interface may serve as a scaffolding site or a nutrient source for the urinary microbiota or invading pathogens, but its exact role in UTI pathogenesis is unclear. Although members of the gut microbiota have been shown to degrade GAGs, the utilization and degradation of GAGs by the urinary microbiota or uropathogens had not been investigated. In this study, we developed an in vitro plate-based assay to measure GAG degradation and utilization and used this assay to screen a library of 37 urinary bacterial isolates representing both urinary microbiota and uropathogenic species. This novel assay is more rapid, inexpensive, and quantitative compared to previously developed assays, and can measure three of the major classes of human GAGs. Our findings demonstrate that this assay captures the well-characterized ability of Streptococcus agalactiae to degrade hyaluronic acid and partially degrade chondroitin sulfate. Additionally, we present the first known report of chondroitin sulfate degradation by Proteus mirabilis, an important uropathogen and a causative agent of acute, recurrent, and catheter-associated urinary tract infections (CAUTI). In contrast, we observed that uropathogenic Escherichia coli (UPEC) and members of the urinary microbiota, including lactobacilli, were unable to degrade GAGs.
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Affiliation(s)
- Vivian H Nguyen
- Department of Biological Sciences, The University of Texas at Dallas, Richardson, TX, United States
| | - Fatima Khan
- Department of Biological Sciences, The University of Texas at Dallas, Richardson, TX, United States
| | - Braden M Shipman
- Department of Biological Sciences, The University of Texas at Dallas, Richardson, TX, United States
| | - Michael L Neugent
- Department of Biological Sciences, The University of Texas at Dallas, Richardson, TX, United States
| | - Neha V Hulyalkar
- Department of Biological Sciences, The University of Texas at Dallas, Richardson, TX, United States
| | - Natalie Y Cha
- Department of Biological Sciences, The University of Texas at Dallas, Richardson, TX, United States
| | - Philippe E Zimmern
- Department of Urology, University of Texas Southwestern Medical Center, Dallas, TX, United States
| | - Nicole J De Nisco
- Department of Biological Sciences, The University of Texas at Dallas, Richardson, TX, United States.,Department of Urology, University of Texas Southwestern Medical Center, Dallas, TX, United States
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19
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Ganguly A, Ebrahimzadeh T, Zimmern P, De Nisco NJ, Prasad S. Label-Free, Novel Electrofluidic Capacitor Biosensor for Prostaglandin E2 Detection toward Early and Rapid Urinary Tract Infection Diagnosis. ACS Sens 2022; 7:186-198. [PMID: 34928577 DOI: 10.1021/acssensors.1c01951] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Urine Prostaglandin E2 (PGE2) has been identified as an attractive diagnostic and prognostic biomarker for urinary tract infection (UTI). This work demonstrates the use of PGE2 as a biomarker for rapid and label-free testing for UTI. In this work, we have developed a novel electrofluidic capacitor-based biosensor that can used for home-based UTI management with high accuracy in less than 5 min for small volume urine samples (<60 μL). The PGE2 biosensor works on the principle of affinity capture using highly specific monoclonal PGE2 antibody and relies on non-faradaic electrical impedance spectroscopy (EIS) and Mott-Schottky (MS) for quantifying subtle variations in PGE2 levels expressed in human urine (pH 5-8). Dynamic light scattering experiments were performed to characterize surface charge properties and the impact of bulk interferents on the interfacial modulation of electrical properties due to binding and urine pH variations. Binding chemistry between the key elements of the immunosensor stack was validated using attenuated total reflectance-Fourier transform infrared spectroscopy and surface plasmon resonance studies. Linear calibration dose responses were obtained for PGE2 for both EIS and MS. The sensor reliably distinguished between UTI negative and UTI positive cases for both artificial (pH 5-8) and pooled human urine samples. The sensor was not found to cross-react with Prostaglandin D2, a structurally similar interferent, and other abundant urine interferents (urea and creatinine). Human subject studies confirmed the validity of the sensor for robust and accurate UTI diagnosis. This work can be extended to achieve easy, reliable, and rapid home-based UTI management, which can consequently help physicians with timely and appropriate administration of therapy to improve patient outcomes and treatment success.
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Affiliation(s)
- Antra Ganguly
- Department of Bioengineering, University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Tahmineh Ebrahimzadeh
- Department of Biological Sciences, University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Philippe Zimmern
- Department of Urology, University of Texas Southwestern Medical Center, Dallas, Texas 75390, United States
| | - Nicole J. De Nisco
- Department of Biological Sciences, University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Shalini Prasad
- Department of Bioengineering, University of Texas at Dallas, Richardson, Texas 75080, United States
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20
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Fosfomycin Prevents Intravenous Antibiotic Therapy in Women With Recurrent Urinary Tract Infections. Female Pelvic Med Reconstr Surg 2021; 28:109-114. [DOI: 10.1097/spv.0000000000001083] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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21
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Jones-Freeman B, Chonwerawong M, Marcelino VR, Deshpande AV, Forster SC, Starkey MR. The microbiome and host mucosal interactions in urinary tract diseases. Mucosal Immunol 2021; 14:779-792. [PMID: 33542492 DOI: 10.1038/s41385-020-00372-5] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 12/03/2020] [Indexed: 02/06/2023]
Abstract
The urinary tract consists of the bladder, ureters, and kidneys, and is an essential organ system for filtration and excretion of waste products and maintaining systemic homeostasis. In this capacity, the urinary tract is impacted by its interactions with other mucosal sites, including the genitourinary and gastrointestinal systems. Each of these sites harbors diverse ecosystems of microbes termed the microbiota, that regulates complex interactions with the local and systemic immune system. It remains unclear whether changes in the microbiota and associated metabolites may be a consequence or a driver of urinary tract diseases. Here, we review the current literature, investigating the impact of the microbiota on the urinary tract in homeostasis and disease including urinary stones, acute kidney injury, chronic kidney disease, and urinary tract infection. We propose new avenues for exploration of the urinary microbiome using emerging technology and discuss the potential of microbiome-based medicine for urinary tract conditions.
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Affiliation(s)
- Bernadette Jones-Freeman
- Department of Immunology and Pathology, Central Clinical School, Monash University, Melbourne, VIC, Australia
| | - Michelle Chonwerawong
- Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Clayton, VIC, Australia.,Department of Molecular and Translational Sciences, Monash University, Clayton, VIC, Australia
| | - Vanessa R Marcelino
- Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Clayton, VIC, Australia.,Department of Molecular and Translational Sciences, Monash University, Clayton, VIC, Australia
| | - Aniruddh V Deshpande
- Priority Research Centre GrowUpWell, Faculty of Health and Medicine, The University of Newcastle, Callaghan, NSW, Australia.,Department of Pediatric Urology and Surgery, John Hunter Children's Hospital, New Lambton Heights, NSW, Australia.,Urology Unit, Department of Pediatric Surgery, Children's Hospital at Westmead, Sydney Children's Hospital Network, Westmead, NSW, Australia
| | - Samuel C Forster
- Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Clayton, VIC, Australia.,Department of Molecular and Translational Sciences, Monash University, Clayton, VIC, Australia
| | - Malcolm R Starkey
- Department of Immunology and Pathology, Central Clinical School, Monash University, Melbourne, VIC, Australia. .,Priority Research Centre GrowUpWell, Faculty of Health and Medicine, The University of Newcastle, Callaghan, NSW, Australia.
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22
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Ebrahimzadeh T, Kuprasertkul A, Neugent ML, Lutz KC, Fuentes JL, Gadhvi J, Khan F, Zhang C, Sharon BM, Orth K, Li Q, Zimmern PE, De Nisco NJ. Urinary prostaglandin E2 as a biomarker for recurrent UTI in postmenopausal women. Life Sci Alliance 2021; 4:4/7/e202000948. [PMID: 33958485 PMCID: PMC8200289 DOI: 10.26508/lsa.202000948] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 04/21/2021] [Accepted: 04/26/2021] [Indexed: 01/11/2023] Open
Abstract
This work uses controlled human cohorts to investigate urinary prostaglandin E2, the product of cyclooxygenase-2, as both a diagnostic and prognostic biomarker of recurrent UTI postmenopausal women. Urinary tract infection (UTI) is one of the most common adult bacterial infections and exhibits high recurrence rates, especially in postmenopausal women. Studies in mouse models suggest that cyclooxygenase-2 (COX-2)–mediated inflammation sensitizes the bladder to recurrent UTI (rUTI). However, COX-2–mediated inflammation has not been robustly studied in human rUTI. We used human cohorts to assess urothelial COX-2 production and evaluate its product, PGE2, as a biomarker for rUTI in postmenopausal women. We found that the percentage of COX-2–positive cells was elevated in inflamed versus uninflamed bladder regions. We analyzed the performance of urinary PGE2 as a biomarker for rUTI in a controlled cohort of 92 postmenopausal women and PGE2 consistently outperformed all other tested clinical variables as a predictor of rUTI status. Furthermore, time-to-relapse analysis indicated that the risk of rUTI relapse was 3.6 times higher in women with above median urinary PGE2 levels than with below median levels. Taken together, these data suggest that urinary PGE2 may be a clinically useful diagnostic and prognostic biomarker for rUTI in postmenopausal women.
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Affiliation(s)
- Tahmineh Ebrahimzadeh
- Department of Biological Sciences, University of Texas at Dallas, Richardson, TX, USA
| | - Amy Kuprasertkul
- Department of Urology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Michael L Neugent
- Department of Biological Sciences, University of Texas at Dallas, Richardson, TX, USA
| | - Kevin C Lutz
- Depatment of Mathematics, University of Texas at Dallas, Richardson, TX, USA
| | - Jorge L Fuentes
- Department of Urology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Jashkaran Gadhvi
- Department of Biological Sciences, University of Texas at Dallas, Richardson, TX, USA
| | - Fatima Khan
- Department of Biological Sciences, University of Texas at Dallas, Richardson, TX, USA
| | - Cong Zhang
- Depatment of Mathematics, University of Texas at Dallas, Richardson, TX, USA
| | - Belle M Sharon
- Department of Biological Sciences, University of Texas at Dallas, Richardson, TX, USA
| | - Kim Orth
- Department of Molecular Biology, University of Texas Southwestern Medical Center, Dallas, TX, USA.,Howard Hughes Medical Institute, University of Texas Southwestern Medical Center, Dallas, TX, USA.,Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Qiwei Li
- Depatment of Mathematics, University of Texas at Dallas, Richardson, TX, USA
| | - Philippe E Zimmern
- Department of Urology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Nicole J De Nisco
- Department of Biological Sciences, University of Texas at Dallas, Richardson, TX, USA
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23
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Peng L, Zeng L, Jin H, Yang L, Xiao Y, Lan Z, Yu Z, Ouyang S, Zhang L, Sun N. Discovery and antibacterial study of potential PPK1 inhibitors against uropathogenic E. coli. J Enzyme Inhib Med Chem 2021; 35:1224-1232. [PMID: 32420773 PMCID: PMC7301697 DOI: 10.1080/14756366.2020.1766453] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Novel antibacterial agents are urgently needed to address the infections caused by multi-drug resistant bacteria. Urinary tract infections are common infectious diseases in clinical. Most of these infections are caused by drug-resistant uropathogenic Escherichia coli. PPK1 is an essential kinase for bacterial motility, biofilm formation, quorum sensing, and virulence factors in the expression of uropathogenic E. coli. In the present study, two small molecules potentially targeting PPK1 were discovered through virtual screening and biological assays. The in vitro and in vivo results suggested that the interaction of these compounds with PPK1 can disrupt biofilm formation of uropathogenic E. coli and reduce invasive ability and resistance to oxidative stress of this strain. Moreover, the compounds exhibit good antibacterial bacterial activity in the mice with urinary tract infection. Taken together, our findings could provide a new chemotype for the development of antibacterials targeting PPK1.
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Affiliation(s)
- Liang Peng
- Department of Clinical Laboratory, The Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,KingMed School of Laboratory Medicine, Guangzhou Medical University, Guangzhou, China
| | - Liting Zeng
- Department of Clinical Laboratory, The Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Hongwei Jin
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, China
| | - Lixin Yang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, China
| | - Yi Xiao
- Department of Clinical Laboratory, The Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Ziquan Lan
- Department of Clinical Laboratory, The Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Zhanpeng Yu
- Department of Clinical Laboratory, The Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Shi Ouyang
- Department of Clinical Laboratory, The Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Liangren Zhang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, China
| | - Ning Sun
- Department of Clinical Laboratory, The Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,The State Key Laboratory of Chemical Biology and Drug Discovery, Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hong Kong, China
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24
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Drug-induced proarrhythmia: Discussion and considerations for clinical practice. J Am Assoc Nurse Pract 2020; 32:128-135. [PMID: 32015278 DOI: 10.1097/jxx.0000000000000348] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
The clinical practice of pharmaceutical medicine includes contributions from physicians, pharmacists, nurse practitioners, and physician assistants. Drug safety considerations are of considerable importance. This article discusses drug-induced proarrhythmia, with a specific focus on Torsade de Pointes (Torsade), a polymorphic ventricular tachycardia that typically occurs in self-limiting bursts that can lead to dizziness, palpitations, syncope, and seizures, but on rare occasions can progress to ventricular fibrillation and sudden cardiac death. A dedicated clinical pharmacology study conducted during a drug's clinical development program has assessed its propensity to induce Torsade using prolongation of the QT interval as seen on the surface electrocardiogram (ECG) as a biomarker. Identification of QT-interval prolongation does not necessarily prevent a drug from receiving marketing approval if its overall benefit-risk balance is favorable, but, if approved, a warning is placed in its Prescribing Information. This article explains why drugs can have a proarrhythmic propensity and concludes with a case presentation.
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Chavez JA, Christie AL, Zimmern PE. Favorable Outcomes of Repeat Electrofulguration Procedures in Women With Antibiotic-refractory Recurrent Urinary Tract Infections. Urology 2020; 146:83-89. [PMID: 32871138 DOI: 10.1016/j.urology.2020.08.030] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 08/12/2020] [Accepted: 08/17/2020] [Indexed: 10/23/2022]
Abstract
OBJECTIVE To evaluate the efficacy of repeat endoscopic electrofulguration in women with antibiotic-refractory, recurrent urinary tract infections (RUTIs) with persistent symptoms after 1 electrofulguration. METHODS An institutional review board-approved, prospectively maintained database of non-neurogenic women with RUTIs, persistent symptoms and endoscopic findings of bladder wall inflammation after 1 electrofulguration, and minimum 6 months follow-up was reviewed. Endoscopic success was defined as complete resolution of previous lesions without new lesions seen during office cystoscopy 6 months after second electrofulguration. Clinical success was defined as no urinary tract infections at last follow-up; improvement as 1-2 treated infections/year; and failure as ≥3 treated infections/year, daily antibiotic suppression, or another electrofulguration (third or fourth). RESULTS From 2006 to 2018, 58/70 (83%) women with median age 70 years and median follow-up 26 months were included, and 53/58 had endoscopic data 6 months postsecond electrofulguration. Endoscopic success was noted in 26 (49%), and 21/26 had <3 UTIs within the last year of follow-up, vs 2/27 (7%) with endoscopic failure (P = .001). Among those with clinical failure, 6/30 (20%) remained on suppressive antibiotics, 9/30 (30%) required intravenous antibiotic courses, and 2 proceeded to cystectomy. Of 24 women who underwent a third electrofulguration, 11/24 (46%) were clinically successful or improved at median 22 months follow-up. Urine cultures from the year of last follow-up revealed extended-spectrum beta lactamase producing strains (50%) and strains resistant to >3 antibiotics (43%). CONCLUSION Women with persistent RUTIs following 1 electrofulguration may benefit from a second or even third procedure.
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Affiliation(s)
| | - Alana L Christie
- Simmons Comprehensive Cancer Center, UT Southwestern Medical Center, Dallas, TX
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Kwan ACF, Beahm NP. Fosfomycin for bacterial prostatitis: a review. Int J Antimicrob Agents 2020; 56:106106. [PMID: 32721595 DOI: 10.1016/j.ijantimicag.2020.106106] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Revised: 07/17/2020] [Accepted: 07/19/2020] [Indexed: 11/25/2022]
Abstract
There has been growing interest in fosfomycin for the treatment of bacterial prostatitis due to evidence suggesting that it achieves adequate prostatic concentrations for antimicrobial effect, has activity against resistant micro-organisms, and has a low-toxicity profile. This review evaluated the current clinical evidence for fosfomycin in acute and chronic bacterial prostatitis to elucidate the clinical implications of fosfomycin in an era of increasing antimicrobial resistance. PubMed, Scopus, EMBASE, Web of Science, Google Scholar and ClinicalTrials.gov were searched for studies published in the English language from January 1984 to November 2019. The inclusion criteria were met if the study reported the use of fosfomycin (more than one dose) to treat bacterial prostatitis. Ten observational studies were identified that met the inclusion criteria. The evidence for the use of fosfomycin in acute bacterial prostatitis is sparse. The majority of the available evidence is for chronic bacterial prostatitis caused by Escherichia coli. Despite the implementation of variable dosing regimens, extended courses of fosfomycin appear to be safe and effective in achieving clinical and microbiological cure. In these studies, the use of fosfomycin was restricted to cases of treatment failure, intolerance to first-line therapy, or multi-resistant organisms. However, given the development of resistant organisms and the undesirable adverse effects of many first-line therapeutic options, fosfomycin has the potential to be considered as an effective first-line alternative for acute and chronic bacterial prostatitis in the future. Further studies, including randomized controlled trials, would be helpful to firmly establish its optimal dosing regimen, efficacy and place in therapy.
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Affiliation(s)
- Alex C F Kwan
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta, Canada T6G 1C9
| | - Nathan P Beahm
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta, Canada T6G 1C9.
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Advances in Understanding the Human Urinary Microbiome and Its Potential Role in Urinary Tract Infection. mBio 2020; 11:mBio.00218-20. [PMID: 32345639 PMCID: PMC7188990 DOI: 10.1128/mbio.00218-20] [Citation(s) in RCA: 126] [Impact Index Per Article: 31.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Recent advances in the analysis of microbial communities colonizing the human body have identified a resident microbial community in the human urinary tract (UT). Compared to many other microbial niches, the human UT harbors a relatively low biomass. Studies have identified many genera and species that may constitute a core urinary microbiome. However, the contribution of the UT microbiome to urinary tract infection (UTI) and recurrent UTI (rUTI) pathobiology is not yet clearly understood. Evidence suggests that commensal species within the UT and urogenital tract (UGT) microbiomes, such as Lactobacillus crispatus, may act to protect against colonization with uropathogens. However, the mechanisms and fundamental biology of the urinary microbiome-host relationship are not understood. The ability to measure and characterize the urinary microbiome has been enabled through the development of next-generation sequencing and bioinformatic platforms that allow for the unbiased detection of resident microbial DNA. Translating technological advances into clinical insight will require further study of the microbial and genomic ecology of the urinary microbiome in both health and disease. Future diagnostic, prognostic, and therapeutic options for the management of UTI may soon incorporate efforts to measure, restore, and/or preserve the native, healthy ecology of the urinary microbiomes.
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Abstract
Clinical practice includes contributions from physicians, pharmacists, NPs, and physician assistants. Drug safety considerations are of considerable importance. This article discusses drug-induced proarrhythmia, with a specific focus on torsades de pointes, a polymorphic ventricular tachycardia that typically occurs in self-limiting bursts that can lead to dizziness, palpitations, syncope, and seizures, but on rare occasions can progress to ventricular fibrillation and sudden cardiac death. A dedicated clinical pharmacology study conducted during a drug's clinical development program has assessed its propensity to induce torsades using prolongation of the QT interval as seen on the ECG as a biomarker.Identification of QT-interval prolongation does not necessarily prevent a drug from receiving marketing approval if its overall benefit-risk balance is favorable, but, if approved, a warning is placed in its prescribing information. This article explains why drugs can have a proarrhythmic propensity.
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Rapid Growth and Metabolism of Uropathogenic Escherichia coli in Relation to Urine Composition. Clin Microbiol Rev 2019; 33:33/1/e00101-19. [PMID: 31619395 DOI: 10.1128/cmr.00101-19] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Uropathogenic Escherichia coli (UPEC) strains cause a majority of urinary tract infections (UTIs). Since UPEC strains can become antibiotic resistant, adjunct or alternate therapies are urgently needed. UPEC strains grow extremely rapidly in patients with UTIs. Thus, this review focuses on the relation between urine composition and UPEC growth and metabolism. Compilation of urinary components from two major data sources suggests the presence of sufficient amino acids and carbohydrates as energy sources and abundant phosphorus, sulfur, and nitrogen sources. In a mouse UTI model, mutants lacking enzymes of the tricarboxylic acid cycle, gluconeogenesis, and the nonoxidative branch of the pentose cycle are less competitive than the corresponding parental strains, which is consistent with amino acids as major energy sources. Other evidence suggests that carbohydrates are required energy sources. UPEC strains in urine ex vivo and in vivo express transporters for peptides, amino acids, carbohydrates, and iron and genes associated with nitrogen limitation, amino acid synthesis, nucleotide synthesis, and nucleotide salvage. Mouse models confirm the requirement for many, but not all, of these genes. Laboratory evolution studies suggest that rapid nutrient uptake without metabolic rewiring is sufficient to account for rapid growth. Proteins and pathways required for rapid growth should be considered potential targets for alternate or adjunct therapies.
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AUTHOR REPLY. Urology 2019; 128:53-54. [PMID: 31101306 DOI: 10.1016/j.urology.2019.01.034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Accepted: 01/02/2019] [Indexed: 11/23/2022]
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Crivelli JJ, Alhalabi F, Zimmern PE. Electrofulguration in the advanced management of antibiotic‐refractory recurrent urinary tract infections in women. Int J Urol 2019; 26:662-668. [DOI: 10.1111/iju.13963] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Accepted: 03/18/2019] [Indexed: 11/27/2022]
Affiliation(s)
- Joseph J Crivelli
- Department of Urology University of Texas Southwestern Medical Center Dallas Texas USA
| | - Feras Alhalabi
- Department of Urology University of Texas Southwestern Medical Center Dallas Texas USA
| | - Philippe E Zimmern
- Department of Urology University of Texas Southwestern Medical Center Dallas Texas USA
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Zimmern PE. Editorial Comment. J Urol 2018; 200:1191. [DOI: 10.1016/j.juro.2018.04.108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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