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https://www.readbyqxmd.com/read/28740847/fournier-s-gangrene-lessons-learned-from-multimodal-and-multidisciplinary-management-of-perineal-necrotizing-fasciitis
#1
Orestis Ioannidis, Loukiani Kitsikosta, Dimitris Tatsis, Ioannis Skandalos, Aggeliki Cheva, Aikaterini Gkioti, Ioannis Varnalidis, Savvas Symeonidis, Natalia Antigoni Savvala, Styliani Parpoudi, George K Paraskevas, Manousos George Pramateftakis, Efstathios Kotidis, Ioannis Mantzoros, Konstantinos George Tsalis
BACKGROUND: Fournier's gangrene (FG) is a rapidly evolving necrotizing fasciitis of the perineum and the genital area, the scrotum as it most commonly affects man in the vast majority of cases. It is polymicrobial in origin, due to the synergistic action of anaerobes and aerobes and has a very high mortality. There are many predisposing factors including diabetes mellitus, alcoholism, immunosuppression, renal, and hepatic disease. The prognosis of the disease depends on a lot of factors including but not limited to patient age, disease extent, and comorbidities...
2017: Frontiers in Surgery
https://www.readbyqxmd.com/read/28725123/polymicrobial-pyogenic-flexor-tenosynovitis-of-the-index-finger-and-first-ray-resulting-from-autophagia
#2
Andrew P Harris, Joey Johnson, Augusta Kluk, Neill Y Li, Avi D Goodman, Edward Akelman
Pyogenic flexor tenosynovitis (PFT) is a well known infectious condition of the hand, involving the inoculation of the flexor tendon sheath with microorganisms. Many cases have been reported, common causes including direct inoculation by a puncture wound and deep lacerations extending into the flexor tendon sheath. In this report, we present a case of a 50 year old female with PFT resulting from autophagia (consuming one's own body parts, in our case, fingers) successfully treated with irrigation and debridement, amputation of the index finger at the metacarpophalangeal joint and antibiotic therapy...
September 2017: Journal of Orthopaedics
https://www.readbyqxmd.com/read/28720732/pseudomonas-aeruginosa-alters-staphylococcus-aureus-sensitivity-to-vancomycin-in-a-biofilm-model-of-cystic-fibrosis-infection
#3
Giulia Orazi, George A O'Toole
The airways of cystic fibrosis (CF) patients have thick mucus, which fosters chronic, polymicrobial infections. Pseudomonas aeruginosa and Staphylococcus aureus are two of the most prevalent respiratory pathogens in CF patients. In this study, we tested whether P. aeruginosa influences the susceptibility of S. aureus to frontline antibiotics used to treat CF lung infections. Using our in vitro coculture model, we observed that addition of P. aeruginosa supernatants to S. aureus biofilms grown either on epithelial cells or on plastic significantly decreased the susceptibility of S...
July 18, 2017: MBio
https://www.readbyqxmd.com/read/28717130/polymicrobial-infections-in-brain-tissue-from-alzheimer-s-disease-patients
#4
Diana Pisa, Ruth Alonso, Ana M Fernández-Fernández, Alberto Rábano, Luis Carrasco
Several studies have advanced the idea that the etiology of Alzheimer's disease (AD) could be microbial in origin. In the present study, we tested the possibility that polymicrobial infections exist in tissue from the entorhinal cortex/hippocampus region of patients with AD using immunohistochemistry (confocal laser scanning microscopy) and highly sensitive (nested) PCR. We found no evidence for expression of early (ICP0) or late (ICP5) proteins of herpes simplex virus type 1 (HSV-1) in brain sections. A polyclonal antibody against Borrelia detected structures that appeared not related to spirochetes, but rather to fungi...
July 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28717120/new-delhi-metallo-beta-lactamase-ndm-1-producing-klebsiella-pneumoniae-isolated-from-a-burned-patient
#5
Santiago Petersen-Morfin, Paola Bocanegra-Ibarias, Rayo Morfin-Otero, Elvira Garza-González, Hector Raul Perez-Gomez, Esteban González-Diaz, Sergio Esparza-Ahumada, Gerardo León-Garnica, Gabriel Amezcua-Salazar, Eduardo Rodriguez-Noriega
BACKGROUND Infections affecting burn patients are frequently caused by Staphylococcus aureus, Pseudomonas aeruginosa, and Enterobacteriaceae species. Infections with these pathogens have become increasingly difficult to treat due to evolving antibiotic resistance mechanisms, including the production of carbapenemases. CASE REPORT The present case report describes the evolution of a burn patient with polymicrobial healthcare-associated burn infections, including a bloodstream infection due to an emergent multidrug-resistant New Delhi metallo-beta-lactamase (NDM-1)-producing Klebsiella pneumoniae...
July 18, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28716397/polymicrobial-infections-and-biofilms-in-women-s-health-gahro-expert-group-meeting-report-2017
#6
EDITORIAL
Nuno Cerca, Mario Vaneechoutte, Alexander Guschin, Alexander Swidsinski
No abstract text is available yet for this article.
July 14, 2017: Research in Microbiology
https://www.readbyqxmd.com/read/28711438/citrobacter-freundii-bacteremia-risk-factors-of-mortality-and-prevalence-of-resistance-genes
#7
Li-Hsiang Liu, Nai-Yu Wang, Alice Ying-Jung Wu, Chih-Chen Lin, Chun-Ming Lee, Chang-Pan Liu
BACKGROUND/PURPOSE: Multidrug-resistant strains of Citrobacter have emerged, which carry Amp-C β-lactamase (Amp-C), broad-spectrum β-lactamase, extended-spectrum β-lactamase (ESBL), and other resistance mechanisms. These strains are associated with a higher rate of in-hospital mortality. The object of this study is to determine the mortality risk factors, susceptibility pattern to antibiotics, and prevalence of resistance genes in patients with Citrobacter freundii bacteremia. METHODS: From January 2009 to December 2014, blood isolates of C...
June 22, 2017: Journal of Microbiology, Immunology, and Infection, Wei Mian Yu Gan Ran za Zhi
https://www.readbyqxmd.com/read/28710229/pirate-project-point-of-care-informatics-based-randomised-controlled-trial-for-decreasing-overuse-of-antibiotic-therapy-in-gram-negative-bacteraemia
#8
Angela Huttner, Werner C Albrich, Pierre-Yves Bochud, Angèle Gayet-Ageron, Anne Rossel, Elodie von Dach, Stephan Harbarth, Laurent Kaiser
INTRODUCTION: Antibiotic overuse drives antibiotic resistance. The optimal duration of antibiotic therapy for Gram-negative bacteraemia (GNB), a common community and hospital-associated infection, remains unknown and unstudied via randomised controlled trials (RCTs). METHODS AND ANALYSIS: This investigator-initiated, multicentre, non-inferiority, informatics-based point-of-care RCT will randomly assign adult hospitalised patients receiving microbiologically efficacious antibiotic(s) for GNB to (1) 14 days of antibiotic therapy, (2) 7 days of therapy or (3) an individualised duration determined by clinical response and 75% reduction in peak C reactive protein (CRP) values...
July 13, 2017: BMJ Open
https://www.readbyqxmd.com/read/28708784/apoptotic-diminution-of-immature-single-and-double-positive-thymocyte-subpopulations-contributes-to-thymus-involution-during-murine-polymicrobial-sepsis
#9
Christoph Netzer, Tilo Knape, Laura Kuchler, Andreas Weigert, Kai Zacharowski, Waltraud Pfeilschifter, Gregory Sempowski, Michael J Parnham, Bernhard Brüne, Andreas von Knethen
To generate and maintain functional T-cell receptor diversity, thymocyte development is tightly organized. Errors in this process may have dramatic consequences, provoking, for example, autoimmune diseases. Probably for this reason, the thymus reacts to septic stress with involution, decreasing the numbers of thymocytes. Because it is still unclear which thymocyte subpopulation contributes to thymus involution and whether thymocyte emigration is altered, we were interested to clarify this question in detail...
August 2017: Shock
https://www.readbyqxmd.com/read/28708374/chemical-modification-and-detoxification-of-the-pseudomonas-aeruginosa-toxin-2-heptyl-4-hydroxyquinoline-n-oxide-by-environmental-and-pathogenic-bacteria
#10
Sven Thierbach, Franziska S Birmes, Matthias C Letzel, Ulrich Hennecke, Susanne Fetzner
2-Heptyl-4-hydroxyquinoline N-oxide (HQNO), a major secondary metabolite and virulence factor produced by the opportunistic pathogen Pseudomonas aeruginosa, acts as potent inhibitor of respiratory electron transfer and thereby affects host cells as well as microorganisms. In this study, we demonstrate the previously unknown capability of environmental and pathogenic bacteria to transform and detoxify this compound. Strains of Arthrobacter and Rhodococcus spp. as well as Staphylococcus aureus introduced a hydroxyl group at C-3 of HQNO, whereas Mycobacterium abscessus, M...
July 14, 2017: ACS Chemical Biology
https://www.readbyqxmd.com/read/28708218/microbial-characteristics-of-posttraumatic-infective-keratitis
#11
Blanche X Lim, Victor T C Koh, Manotosh Ray
PURPOSE: To determine the demographics, risk factors, clinical and microbiological characteristics, and treatment outcome of posttraumatic infective keratitis. METHODS: Consecutive patients with posttraumatic infective keratitis presenting to the Ophthalmology Department of a tertiary referral hospital in Singapore between March 2012 and March 2016 were prospectively identified. A standardized data collection form was used to document patient demographics, microbiological diagnosis, antibiotic sensitivity, and pretreatment and posttreatment ocular characteristics...
July 8, 2017: European Journal of Ophthalmology
https://www.readbyqxmd.com/read/28705768/the-clinical-and-microbiological-characteristics-of-infections-in-burn-patients-from-the-formosa-fun-coast-dust-explosion
#12
Tzu-Chao Lin, Rui-Xin Wu, Chih-Chien Chiu, Ya-Sung Yang, Yi Lee, Jung-Chung Lin, Feng-Yee Chang
BACKGROUND/PURPOSE: Bloodstream infection is a leading cause of mortality among burn patients. This study aimed to evaluate the risk factors, causative pathogens, and the relationship between bloodstream infections and other infections among burn patients from the Formosa Fun Coast Dust Explosion. METHODS: This retrospective study evaluated the demographic and clinical characteristics, infection types, causative pathogen(s), and isolates' antibiotic susceptibilities from patients who were hospitalized between June 27 and September 31, 2015...
June 22, 2017: Journal of Microbiology, Immunology, and Infection, Wei Mian Yu Gan Ran za Zhi
https://www.readbyqxmd.com/read/28701511/n-arachidonoyl-dopamine-modulates-acute-systemic-inflammation-via-nonhematopoietic-trpv1
#13
Samira K Lawton, Fengyun Xu, Alphonso Tran, Erika Wong, Arun Prakash, Mark Schumacher, Judith Hellman, Kevin Wilhelmsen
N-Arachidonoyl dopamine (NADA) is an endogenous lipid that potently activates the transient receptor potential vanilloid 1 (TRPV1), which mediates pain and thermosensation. NADA is also an agonist of cannabinoid receptors 1 and 2. We have reported that NADA reduces the activation of cultured human endothelial cells by LPS and TNF-α. Thus far, in vivo studies using NADA have focused on its neurologic and behavioral roles. In this article, we show that NADA potently decreases in vivo systemic inflammatory responses and levels of the coagulation intermediary plasminogen activator inhibitor 1 in three mouse models of inflammation: LPS, bacterial lipopeptide, and polymicrobial intra-abdominal sepsis...
July 12, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28698253/outcomes-of-corynebacterium-peritonitis-a-multicenter-registry-analysis
#14
Htay Htay, Yeoungjee Cho, Elaine M Pascoe, Darsy Darssan, Carmel M Hawley, Philip A Clayton, Monique Borlace, Sunil V Badve, Kamal Sud, Neil C Boudville, Stephen P McDonald, David W Johnson
BACKGROUND: Corynebacterium is a rare cause of peritonitis that is increasingly being recognized in peritoneal dialysis (PD) patients. The aims of this study were to compare Corynebacterium peritonitis outcomes with those of peritonitis caused by other organisms and to examine the effects of type and duration of antibiotic therapy on outcomes of Corynebacterium peritonitis. METHODS: Using Australia and New Zealand Dialysis and Transplant Registry (ANZDATA) data, we included all PD patients who developed peritonitis in Australia between 2004 and 2014...
July 11, 2017: Peritoneal Dialysis International: Journal of the International Society for Peritoneal Dialysis
https://www.readbyqxmd.com/read/28696203/a-broadly-distributed-toxin-family-mediates-contact-dependent-antagonism-between-gram-positive-bacteria
#15
John C Whitney, S Brook Peterson, Jungyun Kim, Manuel Pazos, Adrian J Verster, Matthew C Radey, Hemantha D Kulasekara, Mary Q Ching, Nathan P Bullen, Diane Bryant, Young Ah Goo, Michael G Surette, Elhanan Borenstein, Waldemar Vollmer, Joseph D Mougous
The Firmicutes are a phylum of bacteria that dominate numerous polymicrobial habitats of importance to human health and industry. Although these communities are often densely colonized, a broadly distributed contact-dependent mechanism of interbacterial antagonism utilized by Firmicutes has not been elucidated. Here we show that proteins belonging to the LXG polymorphic toxin family present in Streptococcus intermedius mediate cell contact- and Esx secretion pathway-dependent growth inhibition of diverse Firmicute species...
July 11, 2017: ELife
https://www.readbyqxmd.com/read/28694232/reinforcement-of-an-antimicrobial-stewardship-task-force-aims-at-a-better-use-of-antibiotics-of-last-resort-the-colitifos-study
#16
Benjamin Davido, Frédérique Bouchand, Aurélien Dinh, Christian Perronne, Maryvonne Villart, Olivia Senard, Jérome Salomon
BACKGROUND: Physicians are facing a worldwide increase in multidrug-resistant (MDR) organisms. Eradication of such bacteria, including so called superbugs (XDR), may cause physicians to prescribe last-resort antibiotics. However, experience with these drugs is limited and few data are available. METHODS: A before and after retrospective study was conducted from January 2008 to June 2016. Prescriptions of parenteral antimicrobials considered as last-resort antibiotics (colistin, fosfomycin, tigecycline and temocillin) were reviewed by 4 infectious disease specialists (according to microbiology results, susceptibility testing, clinical situation and alternative agents), while doses were analyzed by a pharmacist...
July 7, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28691647/microbiological-diagnosis-in-revision-of-infected-knee-arthroplasties-in-denmark
#17
Martin Lindberg-Larsen, Frederik T Pitter, Marianne Voldstedlund, Henrik M Schrøder, Jens Bagger
BACKGROUND: Revision of infected knee arthroplasties is associated with high failure rates (30-40%). An understanding of the microbiology is important to optimize treatment and outcome. We describe microbiological diagnostic practice and diagnosis in revision of infected knee arthroplasties. METHODS: One hundred and two partial revisions (open debridement and exchange of tibial insert) and 213 two-stage procedures performed due to infection in 275 patients from 1 July 2011 to 30 June 2013 were included and analysed by linkage to data from a nationwide registry on microbiological test results...
July 8, 2017: Infectious Diseases
https://www.readbyqxmd.com/read/28690466/propionibacterium-acnes-host-inflammatory-response-during-periprosthetic-infection-is-joint-specific
#18
Scott R Nodzo, K Keely Boyle, Samrath Bhimani, Thomas R Duquin, Andy O Miller, Geoffrey H Westrich
BACKGROUND: Propionibacterium acnes (P. acnes) has become increasingly recognized as a cause of periprosthetic joint infection (PJI). QUESTIONS/PURPOSES: It is not currently known if the clinical presentation of P. acnes varies depending on the joint being infected. METHODS: We retrospectively reviewed patients infected with P. acnes after total hip, knee, and shoulder arthroplasty from two institutions. Patients were classified as having a PJI based on the Musculoskeletal Infection Society criteria and were excluded if they had a polymicrobial culture...
July 2017: HSS Journal: the Musculoskeletal Journal of Hospital for Special Surgery
https://www.readbyqxmd.com/read/28683646/bloodstream-infections-in-acute-myeloid-leukemia-patients-treated-according-to-the-finnish-leukemia-group-aml-2003-protocol-a-prospective-nationwide-study
#19
Aarne Kolonen, Marjatta Sinisalo, Reetta Huttunen, Jaana Syrjänen, Janne Aittoniemi, Heini Huhtala, Marja Sankelo, Hannele Rintala, Riikka Räty, Esa Jantunen, Tapio Nousiainen, Marjaana Säily, Marjut Kauppila, Maija Itälä-Remes, Hanna Ollikainen, Auvo Rauhala, Pirjo Koistinen, Erkki Elonen
BACKGROUND: Infections greatly influence the outcome of acute myeloid leukemia (AML) patients receiving intensive treatment. The aim of this study was to establish the incidence, microbial etiology, risk factors and prognosis of bloodstream infections (BSIs) in patients with AML and compare the results with the previous treatment protocol (AML-92). METHODS: Registery data were gathered prospectively from 357 patients aged 16-65 years recruited on the AML-2003 treatment protocol between November 2003 and November 2011 during different treatment cycles...
July 6, 2017: Infectious Diseases
https://www.readbyqxmd.com/read/28683409/thymus-vulgaris-l-extract-has-antimicrobial-and-anti-inflammatory-effects-in-the-absence-of-cytotoxicity-and-genotoxicity
#20
Jonatas Rafael de Oliveira, Daiane de Jesus Viegas, Ana Paula Réquia Martins, Cláudio Antonio Talge Carvalho, Cristina Pacheco Soares, Samira Esteves Afonso Camargo, Antonio Olavo Cardoso Jorge, Luciane Dias de Oliveira
OBJECTIVES: This study evaluated the biological effects of the T. vulgaris L. extract., such as antimicrobial activity on planktonic cultures and mono- and polymicrobial biofilms, cytotoxicity, anti-inflammatory activity and genotoxicity. METHODS: Monomicrobial biofilms of Candida albicans, Staphylococcus aureus, Enterococcus faecalis, Streptococcus mutans and Pseudomonas aeruginosa and polymicrobial biofilms composed by C. albicans with each bacterium were formed for 48h and exposed for 5min to the plant extract...
June 27, 2017: Archives of Oral Biology
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