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https://www.readbyqxmd.com/read/29150672/fmnh2-dependent-monooxygenases-initiate-catabolism-of-sulfonamides-in-microbacterium-sp-strain-br1-subsisting-on-sulfonamide-antibiotics
#1
Benjamin Ricken, Boris A Kolvenbach, Christian Bergesch, Dirk Benndorf, Kevin Kroll, Hynek Strnad, Čestmír Vlček, Ricardo Adaixo, Frederik Hammes, Patrick Shahgaldian, Andreas Schäffer, Hans-Peter E Kohler, Philippe F-X Corvini
We report a cluster of genes encoding two monooxygenases (SadA and SadB) and one FMN reductase (SadC) that enable Microbacterium sp. strain BR1 and other Actinomycetes to inactivate sulfonamide antibiotics. Our results show that SadA and SadC are responsible for the initial attack of sulfonamide molecules resulting in the release of 4-aminophenol. The latter is further transformed into 1,2,4-trihydroxybenzene by SadB and SadC prior to mineralization and concomitant production of biomass. As the degradation products lack antibiotic activity, the presence of SadA will result in an alleviated bacteriostatic effect of sulfonamides...
November 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29150336/urinary-tract-infections-in-neonates-with-unexplained-pathological-indirect-hyperbilirubinemia-prevalence-and-significance
#2
Elif Bahat Ozdogan, Mehmet Mutlu, Secil Arslansoyu Camlar, Gülcin Bayramoglu, Sebnem Kader, Yakup Aslan
BACKGROUND: It is controversial to test for urinary tract infection (UTI) in patients with unexplained indirect hyperbilirubinemia in the first 2 weeks of life. We aimed to study the prevalence and significance of UTIs in such neonates who were requiring phototherapy. METHODS: Subjects were 2- to 14-day-old neonates with indirect bilirubin levels above phototherapy limit with no other abnormality in their bilirubinaemia-related etiologic workup. UTI was diagnosed by 2 consecutive positive cultures obtained by catheterisation, documenting growth of >10,000 colonies of the same microorganism with consistent antibiograms...
October 28, 2017: Pediatrics and Neonatology
https://www.readbyqxmd.com/read/29149965/comparision-of-ureteral-stent-colonization-between-deceased-and-live-donor-renal-transplant-recipients
#3
M Sarier, D Seyman, S Tekin, I Duman, B Uygun, M Demir, E Kukul, A H Yavuz
BACKGROUND: The use of a ureteral stent can cause a urinary tract infection (UTI), although it reduces urologic complications. UTIs are associated with a higher rate of ureteral stent colonization (USC). The aim of this study was to compare USC in living and deceased donor renal transplant recipients. MATERIAL AND METHODS: We conducted a prospective study of 48 patients who underwent renal transplantation between January and December 2016. The stents were removed aseptically, the inner surface of proximal and distal ends of stents were irrigated with liquid culture medium, and then they were vortexed for bacteriological investigation...
November 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/29149963/urinary-tract-infections-in-the-first-year-post-kidney-transplantation-potential-benefits-of-treating-asymptomatic-bacteriuria
#4
P Kotagiri, D Chembolli, J Ryan, P D Hughes, N D Toussaint
BACKGROUND: Urinary tract infections (UTIs) are the commonest infectious complication in kidney transplant recipients (KTRs). No recommendations exist regarding treatment of asymptomatic bacteriuria. We aimed to identify potential risk factors and microbiological profile for UTIs, the role of treatment of asymptomatic bacteriuria, and effects on graft outcomes of bacteriuria within the first year post-transplantation. METHODS: We performed a retrospective analysis of UTIs in KTRs transplanted between January 2012 and December 2013 in 2 transplantation centers...
November 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/29149266/association-between-prior-antibiotic-therapy-and-subsequent-risk-of-community-acquired-infections-a-systematic-review
#5
Umer Malik, David Armstrong, Mark Ashworth, Alex Dregan, Veline L'Esperance, Lucy McDonnell, Mariam Molokhia, Patrick White
Background: Antibiotic use can have negative unintended consequences including disruption of the human microbiota, which is thought to protect against pathogen overgrowth. We conducted a systematic review to assess whether there is an association between exposure to antibiotics and subsequent risk of community-acquired infections. Methods: We searched MEDLINE, EMBASE and Web of Science for studies published before 30 June 2017, examining the association between antibiotic use and subsequent community-acquired infection...
November 14, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/29146836/complete-genome-sequences-of-bk-polyomavirus-strains-from-two-patients-with-urinary-tract-infection-sequenced-using-the-ion-torrent-platform
#6
Graham Rose, Kyriaki Ranellou, Raju Misra, Colin Crump, David Wooldridge, Surendra Parmar, Christopher Maddren, Saheer Gharbia, Hamid Jalal
BK polyomavirus is an important pathogen in kidney transplant patients. We report here two complete genome sequences, those of isolates CAMB-1035 and CAMB-1055, identified in two urine samples tested for urinary tract infection at a hospital in eastern England, United Kingdom. Variation and phylogenetic analyses indicate that both isolates belong to subtype Ib-1.
November 16, 2017: Genome Announcements
https://www.readbyqxmd.com/read/29133089/cellulose-gum-and-copper-nanoparticles-based-hydrogel-as-antimicrobial-agents-against-urinary-tract-infection-uti-pathogens
#7
Abdullah M Al-Enizi, Tansir Ahamad, Abdullah Baker Al-Hajji, Jahangeer Ahmed, Anis Ahmad Chaudhary, Saad M Alshehri
In the present study, stable copper nanoparticles (CuNPs) were successfully prepared in the hydrogel matrix. The prepared nanocomposite (HCuNPs) was characterized via x-ray diffraction (XRD), electron microscopy (TEM), and energy-dispersive (EDX) and x-ray photoelectron spectroscopic (XPS) studies. The wide scan XPS spectra support the presence of C, N and O in neat hydrogel; while, the XPS spectra of HCuNPs demonstrate the presence of Cu along with C, N, and O elements. TEM studies show the formation of spherical shaped CuNPs in the size range from 7 to 12nm...
November 10, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29129382/the-cryoelectron-microscopy-structure-of-the-type-1-chaperone-usher-pilus-rod
#8
Manuela K Hospenthal, Dawid Zyla, Tiago R D Costa, Adam Redzej, Christoph Giese, James Lillington, Rudi Glockshuber, Gabriel Waksman
Adhesive chaperone-usher pili are long, supramolecular protein fibers displayed on the surface of many bacterial pathogens. The type 1 and P pili of uropathogenic Escherichia coli (UPEC) play important roles during urinary tract colonization, mediating attachment to the bladder and kidney, respectively. The biomechanical properties of the helical pilus rods allow them to reversibly uncoil in response to flow-induced forces, allowing UPEC to retain a foothold in the unique and hostile environment of the urinary tract...
November 7, 2017: Structure
https://www.readbyqxmd.com/read/29128389/the-impact-of-initial-antibiotic-treatment-failure-real-world-insights-in-patients-with-complicated-urinary-tract-infection
#9
Sudeep Karve, Kellie Ryan, Pascale Peeters, Elisa Baelen, Sonia Rojas-Farreras, Danielle Potter, Jesús Rodríguez-Baño
OBJECTIVES: RECOMMEND (NCT02364284; D4280R00005) assessed treatment patterns and outcomes associated with initial antibiotic therapy (IAT; antibiotics received <48 h post-initiation of antibiotic therapy) in healthcare-associated infections across five countries. METHODS: Data from medical records of hospitalized patients aged ≥18 years with healthcare-associated complicated urinary tract infections (cUTI) are presented. Univariate and multivariate logistic regression analyses identified potential risk factors associated with IAT failure...
November 8, 2017: Journal of Infection
https://www.readbyqxmd.com/read/29115647/clinical-infection-in-burn-patients-and-its-consequences
#10
Cem Emir Güldoğan, Murat Kendirci, Deniz Tikici, Emre Gündoğdu, Ahmet Çınar Yastı
BACKGROUND: Burn injuries facilitate invasive infections and sepsis not only by destroying the continuity of the protective skin barrier but also through systemic effects. The burn wound, blood, and urine samples are frequently cultured to determine the pathogen agent. The aim of this study was to analyze pathogen growth in patients' cultures confirmed as "infection positive" by the hospital Infection Control Committee and to assess the clinical implications of these growths. METHODS: Hospitalized patients included in the study were those with a total burned body surface area of >10% and "presence of infection" confirmed by the Infection Control Committee...
November 2017: Ulusal Travma Ve Acil Cerrahi Dergisi, Turkish Journal of Trauma & Emergency Surgery: TJTES
https://www.readbyqxmd.com/read/29110180/correlation-between-the-molecular-effects-of-mutations-at-the-dimer-interface-of-alanine-glyoxylate-aminotransferase-leading-to-primary-hyperoxaluria-type-i-and-the-cellular-response-to-vitamin-b6
#11
Mirco Dindo, Elisa Oppici, Daniele Dell'Orco, Rosa Montone, Barbara Cellini
Primary hyperoxaluria type I (PH1) is a rare disease caused by the deficit of liver alanine-glyoxylate aminotransferase (AGT). AGT prevents oxalate formation by converting peroxisomal glyoxylate to glycine. When the enzyme is deficient, progressive calcium oxalate stones deposit first in the urinary tract and then at the systemic level. Pyridoxal 5'-phosphate (PLP), the AGT coenzyme, exerts a chaperone role by promoting dimerization, as demonstrated by studies at protein and cellular level. Thus, variants showing a destabilized dimeric structure should, in principle, be responsive to vitamin B6, a precursor of PLP...
November 6, 2017: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/29102123/convergence-of-plasmid-architectures-drives-emergence-of-multi-drug-resistance-in-a-clonally-diverse-escherichia-coli-population-from-a-veterinary-clinical-care-setting
#12
Sam Wagner, Nadejda Lupolova, David L Gally, Sally A Argyle
The purpose of this study was to determine the plasmid architecture and context of resistance genes in multi-drug resistant (MDR) Escherichia coli strains isolated from urinary tract infections in dogs. Illumina and single-molecule real-time (SMRT) sequencing were applied to assemble the complete genomes of E. coli strains associated with clinical urinary tract infections, which were either phenotypically MDR or drug susceptible. This revealed that multiple distinct families of plasmids were associated with building an MDR phenotype...
November 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/29090643/identification-through-maldi-tof-mass-spectrometry-and-antimicrobial-susceptibility-profiling-of-bacterial-pathogens-isolated-from-sow-urinary-tract-infection
#13
Luisa Z Moreno, Carlos E C Matajira, Andre P Poor, Renan E Mesquita, Vasco T M Gomes, Ana Paula S Silva, Cristina R Amigo, Ana Paula G Christ, Mikaela R F Barbosa, Maria Inês Z Sato, Andrea M Moreno
BACKGROUND: Urinary tract infection (UTI) is a common disease in sows due to intensification of pig production. Despite direct economic losses, UTI prevalence and respective microbial identification are still poorly studied. OBJECTIVE: The aims of this study were to identify the causative agents of UTI in sows through MALDI-TOF mass spectrometry and to characterize their respective antimicrobial resistance profiles. MATERIALS AND METHODS: Urine samples from 300 sows of three swine herds from São Paulo State (Brazil) were screened for UTI; suggestive samples were submitted to bacterial isolation...
November 1, 2017: Veterinary Quarterly
https://www.readbyqxmd.com/read/29079115/molecular-characterization-of-glycopeptide-and-macrolide-resistance-genes-among-multidrug-resistant-enterococcus-faecalis-strains
#14
Asieh Taji, Hadi Sedigh Ebrahim-Saraie, Hossein Kazemian, Hamid Heidari
BACKGROUND: Multiple-drug-resistant enterococci and vancomycin-resistant enterococci (VRE) are major cause of healthcare associated infections due to their antibiotic resistance traits. Among the enterococci, Enterococcus faecalis is an important opportunistic pathogen causing various hospital-acquired infections. METHODS: A total of 51 E. faecalis strains were isolated from urinary tract infections (UTIs), bloodstream infections, respiratory tract infections, abdominal infections, and eye infection...
October 24, 2017: Journal of the Chinese Medical Association: JCMA
https://www.readbyqxmd.com/read/29076587/high-prevalence-of-candiduria-due-to-non-albicans-candida-species-among-diabetic-patients-a-matter-of-concern
#15
Alireza Esmailzadeh, Hossein Zarrinfar, AbdolMajid Fata, Tanuka Sen
BACKGROUND: Among the fungal pathogens, Candida species are the most common cause of urinary tract infection (UTI). Some predisposing factors such as diabetes mellitus, urinary retention, urinary stasis, renal transplantation, and hospitalization can increase the risk of candiduria. The aim of this cross-sectional study was to evaluate candiduria among type 2 diabetic patients and identification of the Candida isolates. METHOD: Four hundred clean-catch midstream urine specimens were obtained from patients with type 2 diabetes mellitus...
October 27, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/29071557/collectins-in-urinary-tract-and-kidney-diseases
#16
REVIEW
Yongfang Qin, Jingjing Liu, Jiao Liu, Fengqi Hu
The innate immune system serves as the frontline defense against invading pathogens and initiates an inflammatory response to microorganisms. Collectins are C-type lectins that are structurally characterized by a collagen-like sequence and a carbohydrate recognition domain. Moreover, they are widely expressed throughout the body and are involved in the innate immunity against a variety of pathogens, regulating inflammation, and protecting the lungs from pathogens. Recently, two classical collectins, surfactant protein A (SP-A) and surfactant protein D (SP-D), as well as novel collectin 11, were found present in urinary tract tissues...
October 25, 2017: International Urology and Nephrology
https://www.readbyqxmd.com/read/29066921/prevalence-incidence-burden-and-clinical-impact-of-healthcare-associated-infections-and-antimicrobial-resistance-a-national-prevalent-cohort-study-in-acute-care-hospitals-in-greece
#17
Evangelos I Kritsotakis, Flora Kontopidou, Eirini Astrinaki, Maria Roumbelaki, Eleni Ioannidou, Achilles Gikas
BACKGROUND: Assessing the overall burden of healthcare-associated infections (HAIs) is challenging, but imperative in evaluating the cost-effectiveness of infection control programs. This study aimed to estimate the point prevalence and annual incidence of HAIs in Greece and assess the excess length of stay (LOS) and mortality attributable to HAIs, overall and for main infection sites and tracer antimicrobial resistance (AMR) phenotypes and pathogens. PATIENTS AND METHODS: This prevalent cohort study used a nationally representative cross-section of 8,247 inpatients in 37 acute care hospitals to record active HAIs of all types at baseline and overall LOS and in-hospital mortality up to 90 days following hospital admission...
2017: Infection and Drug Resistance
https://www.readbyqxmd.com/read/29066550/comparative-genomic-analysis-of-globally-dominant-st131-clone-with-other-epidemiologically-successful-extraintestinal-pathogenic-escherichia-coli-expec-lineages
#18
Sabiha Shaik, Amit Ranjan, Sumeet K Tiwari, Arif Hussain, Nishant Nandanwar, Narender Kumar, Savita Jadhav, Torsten Semmler, Ramani Baddam, Mohammed Aminul Islam, Munirul Alam, Lothar H Wieler, Haruo Watanabe, Niyaz Ahmed
Escherichia coli sequence type 131 (ST131), a pandemic clone responsible for the high incidence of extraintestinal pathogenic E. coli (ExPEC) infections, has been known widely for its contribution to the worldwide dissemination of multidrug resistance. Although other ExPEC-associated and extended-spectrum-β-lactamase (ESBL)-producing E. coli clones, such as ST38, ST405, and ST648 have been studied widely, no comparative genomic data with respect to other genotypes exist for ST131. In this study, comparative genomic analysis was performed for 99 ST131 E...
October 24, 2017: MBio
https://www.readbyqxmd.com/read/29063878/recurrent-urinary-tract-infections-in-women-how-promising-is-the-use-of-probiotics
#19
REVIEW
Varsha Gupta, Deepika Nag, Pratibha Garg
Urinary tract infections (UTIs) currently rank amongst the most prevalent bacterial infections, representing a major health hazard. UTIs in females usually start as vaginal infections and ascend to the urethra and bladder. Recurrent UTIs (rUTIs) can be defined as at least three episodes of UTI in 1 year or two episodes in 6 months. Various antibiotics have been the mainstay of therapy in ameliorating the incidence of UTIs, but recurrent infections continue to afflict many women. It necessitates the exploitation of alternative antimicrobial therapy...
July 2017: Indian Journal of Medical Microbiology
https://www.readbyqxmd.com/read/29063210/late-onset-sepsis-due-to-urinary-tract-infection-in-very-preterm-neonates-is-not-uncommon
#20
Alexander B Mohseny, Veerle van Velze, Sylke J Steggerda, Vivianne E H J Smits-Wintjens, Vincent Bekker, Enrico Lopriore
Urinary tract infection (UTI) is a common cause of sepsis in infants. Premature infants hospitalized at a neonatal intensive care unit often have risk factors for infection. In this group, the risk of UTI is not clearly known, and guidelines for urine analysis are not unanimous. We aimed to identify the risk of UTI in premature infants with central lines, suspected of late-onset sepsis. We analyzed all 1402 infants admitted to our hospital between 2006 and 2014 with a gestational age less than 32 weeks. Six hundred sixty-two episodes of sepsis evaluations were found with an unknown source of infection based on clinical symptoms...
October 23, 2017: European Journal of Pediatrics
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