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Uropathogen

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https://www.readbyqxmd.com/read/28228557/surfactant-protein-a-inhibits-growth-and-adherence-of-uropathogenic-escherichia-coli-to-protect-the-bladder-from-infection
#1
Jiro Hashimoto, Motoko Takahashi, Atsushi Saito, Masaki Murata, Yuichiro Kurimura, Chiaki Nishitani, Rina Takamiya, Yasuaki Uehara, Yoshihiro Hasegawa, Yoshiki Hiyama, Norimasa Sawada, Satoshi Takahashi, Naoya Masumori, Yoshio Kuroki, Shigeru Ariki
Surfactant protein A (SP-A) is a multifunctional host defense collectin that was first identified as a component of pulmonary surfactant. Although SP-A is also expressed in various tissues, including the urinary tract, its innate immune functions in nonpulmonary tissues are poorly understood. In this study, we demonstrated that adherence of uropathogenic Escherichia coli (UPEC) to the bladder was enhanced in SP-A-deficient mice, which suggests that SP-A plays an important role in innate immunity against UPEC...
February 22, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28217700/the-multiple-antibacterial-activities-of-the-bladder-epithelium
#2
REVIEW
Jianxuan Wu, Yuxuan Miao, Soman N Abraham
The urinary tract is subject to frequent challenges from the gut microflora. Indeed, up to 40% of women will experience at least one urinary tract infection (UTI) during their lifetime. Uropathogenic Escherichia coli (UPEC) contribute to an overwhelming majority of these cases and they typically initiate UTIs by invading the superficial epithelium that lines the bladder lumen. In addition to serving as an effective barrier to noxious agents found in urine, bladder epithelial cells (BECs) play a key physiological role in regulating bladder volume to accommodate urine flow...
January 2017: Annals of Translational Medicine
https://www.readbyqxmd.com/read/28217123/virulence-markers-and-phylogenetic-analysis-of-escherichia-coli-strains-with-hybrid-eaec-upec-genotypes-recovered-from-sporadic-cases-of-extraintestinal-infections
#3
Flaviane B M Lara, Danielly R Nery, Pâmela M de Oliveira, Mayana L Araujo, Fabiana R Q Carvalho, Lorena C F Messias-Silva, Leonardo B Ferreira, Celio Faria-Junior, Alex L Pereira
Virulence genes from different E. coli pathotypes are blended in hybrid strains. E. coli strains with hybrid enteroaggregative/uropathogenic (EAEC/UPEC) genotypes have sporadically emerged causing outbreaks of extraintestinal infections, however their association with routine infections is yet underappreciated. We assessed 258 isolates of E. coli recovered from 86 consecutive cases of extraintestinal infections seeking EAEC and hybrid genotype (EAEC/UPEC) strains. Extensive virulence genotyping was carried out to detect 21 virulence genes, including molecular predictors of EAEC and UPEC strains...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28208853/genotypic-characterization-of-virulence-factors-in-escherichia-coli-isolated-from-patients-with-acute-cystitis-pyelonephritis-and-asymptomatic-bacteriuria
#4
Mohsen Tabasi, Mohammad Reza Asadi Karam, Mehri Habibi, Ehsan Mostafavi, Saeid Bouzari
INTRODUCTION: Urinary Tract Infections (UTIs) caused by Uropathogenic Escherichia coli (UPEC) are among the most common infections worldwide. It is well-documented that the pathogenesis of UPEC is mediated by the production of a wide variety of Virulence Factors (VFs). Thus, detection of these VFs and evaluation of their association with different clinical types of UTIs could help to understand the role of these factors in pathogenesis of UPEC isolates. AIM: To investigate the genotypic characteristics of UPEC isolates and to examine the relationship between VFs and different clinical symptoms of UTI...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28208529/re-whole-genome-sequencing-of-uropathogenic-escherichia-coli-reveals-long-evolutionary-history-of-diversity-and-virulence
#5
Edward M Schaeffer
No abstract text is available yet for this article.
March 2017: Journal of Urology
https://www.readbyqxmd.com/read/28201951/retrospective-review-of-the-management-of-epididymo-orchitis-in-a-london-based-level-3-sexual-health-clinic-an-audit-of-clinical-practice
#6
T Lampejo, M Abdulcadir, S Day
The aetiology of epididymo-orchitis is largely related to a patient's age with sexually transmitted pathogens being the common aetiological agents in those below 35 years of age. In individuals aged over 35, uropathogens represent the commonest cause. National guidelines exist for the appropriate management of this condition and its varying aetiology. We aimed to assess the management of epididymo-orchitis in our clinic with reference to the British Association for Sexual Health and HIV national guidelines...
January 1, 2017: International Journal of STD & AIDS
https://www.readbyqxmd.com/read/28199403/comparison-of-microbiological-diagnosis-of-urinary-tract-infection-in-young-children-by-routine-health-service-laboratories-and-a-research-laboratory-diagnostic-cohort-study
#7
Kate Birnie, Alastair D Hay, Mandy Wootton, Robin Howe, Alasdair MacGowan, Penny Whiting, Michael Lawton, Brendan Delaney, Harriet Downing, Jan Dudley, William Hollingworth, Catherine Lisles, Paul Little, Kathryn O'Brien, Timothy Pickles, Kate Rumsby, Emma Thomas-Jones, Judith Van der Voort, Cherry-Ann Waldron, Kim Harman, Kerenza Hood, Christopher C Butler, Jonathan A C Sterne
OBJECTIVES: To compare the validity of diagnosis of urinary tract infection (UTI) through urine culture between samples processed in routine health service laboratories and those processed in a research laboratory. POPULATION AND METHODS: We conducted a prospective diagnostic cohort study in 4808 acutely ill children aged <5 years attending UK primary health care. UTI, defined as pure/predominant growth ≥105 CFU/mL of a uropathogen (the reference standard), was diagnosed at routine health service laboratories and a central research laboratory by culture of urine samples...
2017: PloS One
https://www.readbyqxmd.com/read/28169050/the-importance-of-urine-concentration-on-the-diagnostic-performance-of-the-urinalysis-for-pediatric-urinary-tract-infection
#8
Pradip P Chaudhari, Michael C Monuteaux, Pinkey Shah, Richard G Bachur
STUDY OBJECTIVE: The presence of leukocyte esterase by urine dipstick and microscopic pyuria are both indicators of possible urinary tract infection. The effect of urine concentration on the diagnostic performance of the urinalysis for pediatric urinary tract infection has not been studied. Our objective is to determine whether the urinalysis performance for detecting urinary tract infection varies by urine concentration as measured by specific gravity. METHODS: This was a retrospective cross-sectional study of the urine laboratory results of children younger than 13 years who presented to the emergency department during 68 months and had a paired urinalysis and urine culture obtained...
February 3, 2017: Annals of Emergency Medicine
https://www.readbyqxmd.com/read/28163813/hematospermia-in-a-returned-traveler
#9
Raynell Lang, Jessica Minion, Alexander Wong
Hematospermia is a common complaint among patients seen in outpatient urology clinics. The differential diagnosis is broad and includes inflammatory, infectious, neoplastic, structural, systemic, and traumatic causes. The most common infectious causes are uropathogens and sexually transmitted infections. However, with increasing global travel, physicians must maintain a high clinical suspicion for pathogens not endemic to their region, including Echinococcus, Mycobacterium tuberculosis, and Schistosoma.1 We present a case of hematospermia in a traveler returning from Eastern Africa with exposure to Lake Malawi...
January 2017: Canadian Urological Association Journal, Journal de L'Association des Urologues du Canada
https://www.readbyqxmd.com/read/28162087/antimicrobial-susceptibility-of-uropathogens-isolated-from-cambodian-children
#10
Catrin E Moore, Christopher M Parry
No abstract text is available yet for this article.
February 6, 2017: Paediatrics and International Child Health
https://www.readbyqxmd.com/read/28161211/cranberry-extract-inhibits-in-vitro-adhesion-of-f4-and-f18-escherichia-coli-to-pig-intestinal-epithelium-and-reduces-in-vivo-excretion-of-pigs-orally-challenged-with-f18-verotoxigenic-e-coli
#11
Annelies Coddens, Michaela Loos, Daisy Vanrompay, Jean Paul Remon, Eric Cox
F4(+)E. coli and F18(+)E. coli infections are an important threat for pig industry worldwide. Antibiotics are commonly used to treat infected piglets, but the emerging development of resistance against antibiotics raises major concerns. Hence, alternative therapies to prevent pigs from F4(+)E. coli and F18(+)E. coli infections need to be developed. Since cranberry previously showed anti-adhesive activity against uropathogenic E. coli, we aimed to investigate whether cranberry extract could also inhibit binding of F4(+)E...
January 20, 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/28155015/nitrofurantoin-safety-and-effectiveness-in-treating-acute-uncomplicated-cystitis-auc-in-hospitalized-adults-with-renal-insufficiency-antibiotic-stewardship-implications
#12
B A Cunha, C B Cunha, B Lam, J Giuga, J Chin, V F Zafonte, S Gerson
Nitrofurantoin remains a key oral antibiotic stewardship program (ASP) option in the treatment of acute uncomplicated cystitis (AUC) due to multi-drug resistant (MDR) Gram negative bacilli (GNB). However, there have been concerns regarding decreased nitrofurantoin efficacy with renal insufficiency. In our experience over the past three decades, nitrofurantoin has been safe and effective in treating AUC in hospitalized adults with renal insufficiency. Accordingly, we retrospectively reviewed our recent experience treating AUC in hospitalized adults with decreased renal function (CrCl < 60 ml/min) with nitrofurantoin...
February 2, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28142108/homeopathic-medicine-cantharis-modulates-uropathogenic-e-coli-upec-induced-cystitis-in-susceptible-mice
#13
Cidéli de Paula Coelho, Priscilla Dias Motta, Mariana Petrillo, Renata de Oliveira Iovine, Luciane Costa Dalboni, Fabiana Rodrigues Santana, Michelle Sanchez Freitas Correia, Renato Corrêa Viana Casarin, Vania Maria Carvalho, Leoni Villano Bonamin
OBJECTIVE: This is a random blinded placebo controlled murine experimental model to study the effects of Cantharis 6 CH, a homeopathic medicine, on E coli-induced cystitis. METHODS: 24 adult susceptible female BALB/c mice were inoculated with E coli - UPEC O4:K-:H5 by a transurethral catheter. Cantharis 6cH or vehicle (placebo) was offered to mice by free access into the drinking water (1:100), during 24 h after infection. Spleen, bladder and kidneys were processed for quantitative histopathology after immunohistochemistry, using anti-CD3, CD79, MIF, NK and VEGF antibodies; the cytokines present in the bladder washing fluid were measured using a LUMINEX-Magpix KIT...
January 28, 2017: Cytokine
https://www.readbyqxmd.com/read/28141590/detection-of-virulence-genes-phylogenetic-group-and-antibiotic-resistance-of-uropathogenic-escherichia-coli-in-mongolia
#14
Yandag Munkhdelger, Nyamaa Gunregjav, Altantsetseg Dorjpurev, Nishi Juniichiro, Jav Sarantuya
INTRODUCTION: The severity of urinary tract infection (UTI) produced by uropathogenic Escherichia coli (UPEC) is due to the expression of a wide spectrum of virulence genes. E. coli strains were divided into four phylogenetic groups (A, B1, B2 and D) based on their virulence genes. The present study aimed to assess the relationship between virulence genes, phylogenetic groups, and antibiotic resistance of UPEC. METHODOLOGY: A total of 148 E. coli were tested for antimicrobial resistance against 10 drugs using the disk diffusion method...
January 30, 2017: Journal of Infection in Developing Countries
https://www.readbyqxmd.com/read/28137940/antimicrobial-resistance-in-uropathogens-and-appropriateness-of-empirical-treatment-a-population-based-surveillance-study-in-indonesia
#15
Adhi Kristianto Sugianli, Franciscus Ginting, R Lia Kusumawati, Emmy Hermiyati Pranggono, Ayodhia Pitaloka Pasaribu, Firza Gronthoud, Suzanne Geerlings, Ida Parwati, Menno D De Jong, Frank Van Leth, Constance Schultsz
OBJECTIVES: Urinary tract infections (UTIs) are a common reason for empirical treatment with broad-spectrum antibiotics worldwide. However, population-based antimicrobial resistance (AMR) prevalence data to inform empirical treatment choice are lacking in many regions, because of limited surveillance capacity. We aimed to assess the prevalence of AMR to commonly used antimicrobial drugs in Escherichia coli and Klebsiella pneumoniae isolated from patients with community- or healthcare-associated UTIs on two islands of Indonesia...
January 30, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28126929/draft-genome-sequences-of-semiconstitutive-red-dry-and-rough-biofilm-forming-commensal-and-uropathogenic-escherichia-coli-isolates
#16
Annika Cimdins, Petra Lüthje, Fengyang Li, Irfan Ahmad, Annelie Brauner, Ute Römling
Strains of Escherichia coli exhibit diverse biofilm formation capabilities. E. coli K-12 expresses the red, dry, and rough (rdar) morphotype below 30°C, whereas clinical isolates frequently display the rdar morphotype semiconstitutively. We sequenced the genomes of eight E. coli strains to subsequently investigate the molecular basis of semiconstitutive rdar morphotype expression.
January 26, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28122589/escherichia-coli-o78-isolated-from-septicemic-lambs-shows-high-pathogenicity-in-a-zebrafish-model
#17
Cecilie K Kjelstrup, Amelia E Barber, J Paul Norton, Matthew A Mulvey, Trine M L'Abée-Lund
The pathogenicity of Escherichia coli O78 strain K46, originally isolated from an outbreak of septicemia in neonatal lambs, was investigated in zebrafish embryo and murine models of infection. Its biofilm potential, cellulose production, and the expression of type 1 pili and curli fimbriae were measured by in vitro assays. The strain was highly pathogenic in the zebrafish embryo model of infection, where it killed all embryos within 24 h post inoculation (hpi) at doses as low as 1000 colony forming units. Zebrafish embryos inoculated with similar doses of commensal E...
January 25, 2017: Veterinary Research
https://www.readbyqxmd.com/read/28120647/detection-of-sexually-transmitted-pathogens-in-patients-with-chronic-prostatitis-chronic-pelvic-pain-a-prospective-clinical-study
#18
Dino Papeš, Miram Pasini, Ana Jerončić, Martina Vargović, Viktor Kotarski, Alemka Markotić, Višnja Škerk
In <10% of patients with prostatitis syndrome, a causative uropathogenic organism can be detected. It has been shown that certain organisms that cause sexually transmitted infections can also cause chronic bacterial prostatitis, which can be hard to diagnose and treat appropriately because prostatic samples obtained by prostatic massage are not routinely tested to detect them. We conducted a clinical study to determine the prevalence of Chlamydia, mycoplasma, and trichomonas infection in 254 patients that were previously diagnosed and treated for chronic prostatitis/chronic pelvic pain syndrome due to negative urethral swab, urine, and prostate samples...
January 1, 2017: International Journal of STD & AIDS
https://www.readbyqxmd.com/read/28119486/repeated-treatments-with-chitosan-in-combination-with-antibiotics-completely-eradicate-uropathogenic-escherichia-coli-from-infected-mouse-urinary-bladders
#19
Andreja Erman, Veronika Križan Hergouth, Matthew G Blango, Mojca Kerec Kos, Matthew A Mulvey, Peter Veranič
Uropathogenic Escherichia coli (UPEC), the primary causative agent of urinary tract infections, colonize and invade the epithelial cells of the bladder urothelium. Infection of immature urothelial cells can result in the formation of persistent intracellular reservoirs that are refractory to antibiotic treatments. Previously, we defined a novel therapeutic strategy utilizing the bladder cell exfoliant chitosan to deplete UPEC reservoirs. However, though a single treatment of chitosan followed by ciprofloxacin administration had a marked effect on reducing UPEC titers within the bladder, this treatment failed to prevent relapsing bacteriuria...
January 24, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28104383/virulence-traits-and-pathogenicity-of-uropathogenic-escherichia-coli-isolates-with-common-and-uncommon-o-serotypes
#20
Qingqing Gao, Debao Zhang, Zhengqin Ye, Xiaoping Zhu, Weixia Yang, Lanmei Dong, Song Gao, Xiufan Liu
Urinary tract infections (UTIs) are among the most common human diseases worldwide. This study aimed to collect uropathogenic Escherichia coli (UPEC) isolates from Jiangsu Province and obtain insights into the molecular epidemiology of UPEC in this region. The O serotypes, phylogenetic groups, and virulence factors of 183 UPEC isolates were determined. In this study, we isolated 51 UPEC isolates with common O serotypes including O1, O2, O4, O6, O7, O16, O18 and O75, as well as 35 of those with uncommonly encountered O serotypes including O8, O12, O15, O26, and O74...
January 16, 2017: Microbial Pathogenesis
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