scholarly journals Recurrent urinary tract infection and estrogen shape the taxonomic ecology and functional potential of the postmenopausal urobiome

2021 ◽  
Author(s):  
Michael L. Neugent ◽  
Ashwani Kumar ◽  
Neha V. Hulyalkar ◽  
Kevin C. Lutz ◽  
Vivian H. Nguyen ◽  
...  
Keyword(s):  
Urinary Tract Infection ◽  
Urinary Tract ◽  
Antimicrobial Resistance ◽  
Tract Infection ◽  
Postmenopausal Women ◽  
Taxonomic Composition ◽  
Functional Ecology ◽  
Metagenomic Sequencing ◽  
Antimicrobial Resistance Genes ◽  
History Of

Community-acquired urinary tract infection (UTI) is among the most common bacterial infections observed in humans. Postmenopausal women are a rapidly growing and underserved demographic group who are severely affected by rUTI with a >50% recurrence rate. In this population, rUTI can persist for years, reducing quality of life and imposing a significant healthcare burden. rUTI is most often treated by long-term antibiotic therapy, but development of antibiotic resistance and allergy leave physicians with fewer treatment options. The female urobiome has been identified as a key component of the urogenital environment. However, structural and functional changes in the urobiome underlying rUTI susceptibility in postmenopausal women are not well understood. Here, we used strictly curated, controlled cross-sectional human cohorts of postmenopausal women, urobiome whole genome (shotgun) metagenomic sequencing (WGMS), advanced urine culturing techniques, extensive biobanking of >900 patient-derived urinary bacterial and fungal isolates, and mass spectrometry-based estrogen profiling to survey the urobiome in rUTI patients during infection relapse and remission as well as healthy comparators with no lifetime history of UTI. Our results suggest that a history of rUTI strongly shapes the taxonomic and functional ecology of the urobiome. We also find a putative protective commensal population, consisting of species known to convey protection against bacterial vaginosis such as Lactobacillus crispatus, within the urobiome of women who do not experience UTI. Integration of clinical metadata detected an almost exclusive enrichment of putative protective species belonging to the genus, Lactobacillus, in women taking estrogen hormone therapy (EHT). We further show that the urobiome taxonomic ecology is shaped by EHT, with strong enrichments of putatively protective lactobacilli, such as L. crispatus and L. vaginalis. Integrating quantitative metabolite profiling of urinary estrogens with WGMS, we observed robust associations between urobiome taxa, such as Bifidobacterium breve and L. crispatus, and urinary estrogen conjugate concentrations, suggesting that EHT strongly alters the taxonomic composition of the female urobiome. We have further used functional metagenomic profiling and patient-derived isolate phenotyping to identify microbial metabolic pathways, antimicrobial resistance genes (ARGs), and clinically relevant antimicrobial resistance phenotypes enriched between disease-states. Our data suggest distinct metabolic and ARG signatures of the urobiome associated with current rUTI status and history. Taken together, our data suggests that rUTI history and estrogen use strongly shape the functional and taxonomic composition of the urobiome in postmenopausal women.

scholarly journals Isolation and characterisation of Klebsiella phages for phage therapy

2020 ◽  
Author(s):  
Eleanor Townsend ◽  
Lucy Kelly ◽  
Lucy Gannon ◽  
George Muscatt ◽  
Rhys Dunstan ◽  
...  
Keyword(s):  
Urinary Tract Infection ◽  
Urinary Tract ◽  
Antimicrobial Resistance ◽  
Tract Infection ◽  
Phage Therapy ◽  
Broad Host Range ◽  
Successful Isolation ◽  
Antimicrobial Resistance Genes ◽  
High Virulence ◽  
Resistant Mutants

AbstractKlebsiella is a clinically important pathogen causing a variety of antimicrobial resistant infections in both community and nosocomial settings, particularly pneumonia, urinary tract infection and sepsis. Bacteriophage (phage) therapy is being considered as a primary option for the treatment of drugresistant infections of these types. We report the successful isolation and characterisation of 30 novel, genetically diverse Klebsiella phages. The isolated phages span six different phage families and nine genera, representing both lysogenic and lytic lifestyles. Individual Klebsiella phage isolates infected up to 11 of the 18 Klebsiella capsule types tested, and all 18 capsule-types were infected by at least one of the phages. Of the Klebsiella-infecting phages presented in this study, the lytic phages are most suitable for phage therapy, based on their broad host range, high virulence, short lysis period and given that they encode no known toxin or antimicrobial resistance genes. Importantly, when applied alone, none of the characterised phages were able to suppress the growth of Klebsiella for more than 12 hours, with some phages only able to suppress growth for 3 hours, likely due to inherent ease of Klebsiella to generate spontaneous phage-resistant mutants. This indicates that for successful phage therapy, a cocktail of multiple phages would be necessary to treat Klebsiella infections.

scholarly journals URINARY BLADDER GOSSIPYBOMA

2006 ◽  
Vol 13 (01) ◽  
pp. 160-161
Author(s):  
MUHAMMAD IJAZ ◽  
BASHIR UR REHMAN ◽  
REHAN-E- KIBRIA
Keyword(s):  
Urinary Tract Infection ◽  
Urinary Tract ◽  
Urinary Bladder ◽  
Tract Infection ◽  
Recurrent Uti ◽  
History Of

A 57 years old gentleman was brought with history of recurrent UTI (Urinary tract infection) of 01 yearduration. Following transvesical prostatectomy. UTI could not be controlled after using appropriate antibiotics. Allrelevant investigations were performed. His cystoscopic examination revealed retained gauze piece (12 inches ) inurinary bladder, which was retrieved.

scholarly journals Complete Genome Sequences of Three Lactobacillus crispatus Strains Isolated from the Urine of Postmenopausal Women

2021 ◽  
Vol 10 (48) ◽  
Author(s):  
Neha V. Hulyalkar ◽  
Belle M. Sharon ◽  
Braden M. Shipman ◽  
Amanda P. Arute ◽  
Philippe E. Zimmern ◽  
...  
Keyword(s):  
Urinary Tract Infection ◽  
Urinary Tract ◽  
Tract Infection ◽  
Postmenopausal Women ◽  
Complete Genome ◽  
Genome Sequences ◽  
Content Type ◽  
Lactobacillus Crispatus ◽  
Healthy Women ◽  
Vaginal Health

Lactobacillus crispatus frequently colonizes the vagina and bladder of healthy women. Although its association with vaginal health is relatively well understood, little is known about its role in urinary tract infection (UTI). Here, we report the complete genome sequences of three urinary L. crispatus strains isolated from women with different UTI histories.

scholarly journals Risk factors of multidrug-resistant bacteria in community-acquired urinary tract infections

2021 ◽  
Vol 21 (1) ◽  
pp. 214-9
Author(s):  
Ertugrul Guclu ◽  
Fikret Halis ◽  
Elif Kose ◽  
Aziz Ogutlu ◽  
Oğuz Karabay
Keyword(s):  
Risk Factors ◽  
Urinary Tract Infection ◽  
Urinary Tract ◽  
Tract Infection ◽  
Urinary Tract Infections ◽  
Multidrug Resistant ◽  
Antibiotic Usage ◽  
Advanced Age ◽  
History Of ◽  
Tract Infections

Background: Urinary tract infections (UTIs) are one of the most seen infection among community. Objectives: In this cross-sectional study we aimed to investigate the risk factors of multidrug-resistant (MDR) bacteria that caused community-acquired UTI (CA-UTI). Methods: Consecutive patients admitted to the Urology and Infectious Diseases policlinics with the diagnosis of CA-UTI were included in the study. A standard form including possible predisposing factors for MDR bacteria was applied. Results: In total, 240 patients (51.3% females) were enrolled in the study. The mean age of participants were 59.8 ± 18.3 years old. Escherichia coli (n =166; 69.2%)was the most frequently isolated bacteria and its incidence was higher in females than in males (p=0.01). In total, 129 (53.8%) of the identified pathogens were MDR bacteria. According to multivariate analysis, the use of antibiotics three or more times increased the risk of infection with MDR bacteria by 4.6 times, the history of urinary tract infection in the last 6 months by 2 times, being male and over 65 years old by 3 times. Conclusion: Doctors should consider prescribing broad-spectrum antibiotics in patients with severe UTIs with a history of UTI, advanced age, male gender, and multiple antibiotic usage, even if they have a CA-UTI. Keywords: Urinary tract infection; community acquired; multidrug-resistant; male; multiple antibiotic usage; advanced age.

scholarly journals Incidence, Clinical Profile, and Risk Factors for Serious Bacterial Infections in Children Hospitalized With Fever in Ujjain, India

2020 ◽  
Author(s):  
Ashish Pathak ◽  
Radika Upadhayay ◽  
Aditya Mathur ◽  
Sunil Rathi ◽  
Cecilia Stålsby Lundborg
Keyword(s):  
Risk Factors ◽  
Weight Loss ◽  
Urinary Tract Infection ◽  
Urinary Tract ◽  
Tract Infection ◽  
Blood Culture ◽  
Positive Blood Culture ◽  
Clinical Signs ◽  
Increased Risk ◽  
History Of

Abstract Background Fever is a cause for concern for both parents and the treating pediatrician and a common reason for antibiotic overuse. However, the proportion of children hospitalized for fever with serious bacterial infection (SBI) is uncertain. We aimed to evaluate the epidemiological, clinical, hematological, and biochemical risks for SBI among the children admitted with fever. Method This prospective study was conducted in a rural teaching hospital in India on consecutive children, aged 3 months–12 years, presenting with fever 100°F (37.7°C) or higher. The presence of SBI was confirmed with one of the following criteria: (a) a positive blood culture; (b) roentgenographically confirmed pneumonia with high titres of C-reactive protein; (c) a culture-confirmed urinary tract infection; (d) enteric fever diagnosed clinically in addition to either a positive blood culture or high Widal titers; and (e) meningitis diagnosed clinically in addition to either a positive blood culture or cerebrospinal fluid culture. A predefined questionnaire was filled. Results A total of 302 children were included in the study, out of which 47% (95% CI 41.4%-52.7%) presented with SBI. The factors associated with confirmed SBI in bivariate analysis were history of previous hospitalization, history of chronic illness, history of medication in the previous one week, a partially immunized child, history of common cold, moderate-grade fever, toxic look, significant lymphadenopathy, absence of BCG scar, delayed development, irritability, breathlessness, respiratory distress, poor feeding, significant weight loss, suspected urinary tract infection, hyponatremia, hypokalemia, and abnormal leucocyte count. The final generalized logistic regression model revealed partially immunized child (RR 4.26), breathlessness (RR 1.80), weight loss (RR 2.28), and suspected urinary tract infection (RR 1.95) as risk factors for the increased risk of SBI. Conclusion The study identified multiple risk factors for SBI. Pediatricians can be made aware of these risk factors. Further studies are warranted to identify age-specific risk factors for SBI because most clinicians depend on clinical signs and symptoms to identify SBI.

scholarly journals Complete Genome Sequences of Seven Uropathogenic Escherichia coli Strains Isolated from Postmenopausal Women with Recurrent Urinary Tract Infection

2020 ◽  
Vol 9 (33) ◽  
Author(s):  
Belle M. Sharon ◽  
Amber Nguyen ◽  
Amanda P. Arute ◽  
Neha V. Hulyalkar ◽  
Vivian H. Nguyen ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Urinary Tract Infection ◽  
Urinary Tract ◽  
Tract Infection ◽  
Postmenopausal Women ◽  
Complete Genome ◽  
Recurrent Urinary Tract Infection ◽  
Uropathogenic Escherichia Coli ◽  
Genome Sequences ◽  
Content Type

ABSTRACT Uropathogenic Escherichia coli (UPEC) is the most common cause of urinary tract infection (UTI). This disease disproportionately affects women and frequently develops into recurrent UTI (rUTI) in postmenopausal women. Here, we report the complete genome sequences of seven UPEC isolates obtained from the urine of postmenopausal women with rUTI.

scholarly journals Bacteriological profile, risk factors and antimicrobial susceptibility patterns of symptomatic urinary tract infection among students of Mekelle University, northern Ethiopia

2019 ◽  
Vol 19 (1) ◽  
Author(s):  
Guesh Gebremariam ◽  
Haftom Legese ◽  
Yemane Woldu ◽  
Tadele Araya ◽  
Kiflom Hagos ◽  
...  
Keyword(s):  
Risk Factors ◽  
Urinary Tract Infection ◽  
Urinary Tract ◽  
Tract Infection ◽  
Antimicrobial Susceptibility ◽  
Medical Attention ◽  
Bacterial Isolates ◽  
Symptomatic Urinary Tract Infection ◽  
Mekelle University ◽  
History Of

Abstract Background Bacterial infection of the urinary tract is among the common reasons for seeking medical attention in the community. Rapidly increasing antibiotic resistance of uropathogens is resulting in limited treatment options. Therefore, knowledge of the current uropathogens and their antibiotic susceptibility is important for better treatment of urinary tract infection. Methods A cross-sectional study design was conducted from February to September thirty, 2017 among students who came to Mekelle University student’s clinics with symptomatic urinary tract infection during the study period.. Mid-stream urine specimens were collected from 341individuals with suspected urinary tract infection for bacteriological identification and antimicrobial susceptibility testing. Data on socio-demographic, clinical and risk factors were also collected using a structured questionnaire. Results Among the 341 study participants, 72(21.1%) showed significant bacteriuria. Escherichia coli (48.6%), Coagulase-negative staphylococci (23%), Staphylococcus aureus (13.5%), and Klebsiella spp. (8.1%) were common bacterial isolates. Resistance to ampicillin (81–100%), amoxicillin/clavulanic acid (77–93.6%), co- trimoxazole (55 72.3%), nalidixic acid (57.4%) and tetracycline (46–55.5%) was seen by most isolates. Multidrug resistance was observed in 73% of the bacterial isolates, and 25.5% of the Gram-negative isolates were extended-spectrum beta-lactamase producers. Being female, a history of urinary tract infection, a history of catheterization and frequent sexual activity were found to be statistically associated with urinary tract infection. Conclusion Urinary tract infection is a problem among university students with a prevalence of 21.1%. All isolates have developed resistance to most of the commonly used antibiotics. Therefore, health education on the transmission and causes of urinary tract infection are recommended for the students.

Sign in / Sign up

Export Citation Format

Share Document