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pseudomonas aeruginosa review

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https://www.readbyqxmd.com/read/28231368/is-malignant-otitis-externa-on-the-increase-a-retrospective-review-of-cases
#1
Diana Bhasker, Angela Hartley, Frank Agada
We performed a retrospective review of all patients with malignant otitis externa (MOE) treated in our center between July 2004 and December 2012 to evaluate the current epidemiology in our region and to ascertain causative factors associated with the perceived increase in the number of cases diagnosed. Eleven patients were identified (5 men and 6 women), with a mean age of 77 years (range: 38 to 97 years). Diabetes was present in 36%. Pseudomonas aeruginosa was the causative organism in 64% of cases; all pathogens were sensitive to ciprofloxacin...
February 2017: Ear, Nose, & Throat Journal
https://www.readbyqxmd.com/read/28229205/-spectrum-of-pathogens-in-postoperative-complications-of-visceral-surgery-the-problem-of-multidrug-resistance
#2
A Kramer, J Pochhammer, P Walger, U Seifert, M Ruhnke, J C Harnoss
In general surgery the etiology of surgical site infections has not significantly changed over the last 30 years. Gram-positive bacteria, e.g. coagulase negative staphylococci (CNS), Staphylococcus aureus and Enterococcus spp. as well as Gram-negative bacteria, e.g. Escherichia coli, Enterobacter spp., Klebsiella spp. and Pseudomonas aeruginosa, are the most common findings. Although in general surgery 10% of the S. aureus causing postoperative wound infections were methicillin resistant (MRSA), no cases of multidrug-resistant Gram-negative (MRGN) bacteria were reported...
February 22, 2017: Der Chirurg; Zeitschrift Für Alle Gebiete der Operativen Medizen
https://www.readbyqxmd.com/read/28222444/inflammation-a-double-edged-sword-in-the-response-to-pseudomonas-aeruginosa-infection
#3
Christina K Lin, Barbara I Kazmierczak
The Gram-negative opportunistic pathogen Pseudomonas aeruginosa exploits failures of barrier defense and innate immunity to cause acute infections at a range of anatomic sites. We review the defense mechanisms that normally protect against P. aeruginosa pulmonary infection, as well as the bacterial products and activities that trigger their activation. Innate immune recognition of P. aeruginosa is critical for pathogen clearance; nonetheless, inflammation is also associated with pathogen persistence and poor host outcomes...
February 22, 2017: Journal of Innate Immunity
https://www.readbyqxmd.com/read/28215711/biomarkers-for-cystic-fibrosis-drug-development
#4
REVIEW
Marianne S Muhlebach, J P Clancy, Sonya L Heltshe, Assem Ziady, Tom Kelley, Frank Accurso, Joseph Pilewski, Nicole Mayer-Hamblett, Elizabeth Joseloff, Scott D Sagel
PURPOSE: To provide a review of the status of biomarkers in cystic fibrosis drug development, including regulatory definitions and considerations, a summary of biomarkers in current use with supportive data, current gaps, and future needs. METHODS: Biomarkers are considered across several areas of CF drug development, including cystic fibrosis transmembrane conductance regulator modulation, infection, and inflammation. RESULTS: Sweat chloride, nasal potential difference, and intestinal current measurements have been standardized and examined in the context of multicenter trials to quantify CFTR function...
November 2016: Journal of Cystic Fibrosis: Official Journal of the European Cystic Fibrosis Society
https://www.readbyqxmd.com/read/28195963/mediastinitis-following-endobronchial-ultrasound-guided-transbronchial-needle-aspiration
#5
Aruna Jahoor, Shekhar Ghamande, Shirley Jones, Carl Boethel, Heath D White
Mediastinitis is a rare complication of endobronchial ultrasound-guided transbronchial needle aspiration (EBUS-TBNA). Recent reports of infectious complications following EBUS-TBNA involved oropharyngeal bacteria. Here, we report 2 unusual cases of post-EBUS-TBNA mediastinitis involving Streptococcus pneumoniae and Pseudomonas aeruginosa, which were likely the result of direct inoculation of the organisms at the time of transbronchial needle aspiration. The first case was successfully treated with computed tomography-guided drainage and antibiotics, whereas the second case had >50% distal tracheal obstruction and near total occlusion of the left main stem bronchus, requiring rigid bronchoscopy, stent placement, debulking, and antibiotics...
February 10, 2017: Journal of Bronchology & Interventional Pulmonology
https://www.readbyqxmd.com/read/28195681/recent-advances-in-the-discovery-of-pqsd-inhibitors-as-antimicrobial-agents
#6
Shutao Ma, Ziteng Zhou
The treatment of the infections caused by Pseudomonas aeruginosa, an opportunistic Gram-negative bacterium, is very difficult. High intrinsic tolerance towards common antibiotics and the development of new resistant strains challenge us to find a new treatment as soon as possible. PqsD is an enzyme essential for Pseudomonas aeruginosa quorum sensing apparatus, which catalyzes the last and key step in the biosynthesis of HHQ that is a signal molecule of the P. aeruginosa quorum sensing system. In this review, following an outline on their structures, we present a brief introduction of the PqsD inhibitors including their mechanisms of action, inhibitory activity and structure-activity relationships...
February 14, 2017: ChemMedChem
https://www.readbyqxmd.com/read/28193722/targeting-the-mucosal-barrier-how-pathogens-modulate-the-cellular-polarity-network
#7
Travis R Ruch, Joanne N Engel
The mucosal barrier is composed of polarized epithelial cells with distinct apical and basolateral surfaces separated by tight junctions and serves as both a physical and immunological barrier to incoming pathogens. Specialized polarity proteins are critical for establishment and maintenance of polarity. Many human pathogens have evolved virulence mechanisms that target the polarity network to enhance binding, create replication niches, move through the barrier by transcytosis, or bypass the barrier by disrupting cell-cell junctions...
February 13, 2017: Cold Spring Harbor Perspectives in Biology
https://www.readbyqxmd.com/read/28182358/aetiology-and-significance-of-hospital-acquired-infections-in-mexico
#8
REVIEW
Nayelli M Alonso-Aguilar, Sara R Juarez-Enriquez, Graciela Castro-Escarpulli, Gildardo Rivera, Virgilio Bocanegra-Garcia, Xianwu Guo, Julieta Luna-Herrera, M G Aguilera-Arreola
Hospital-acquired infections (HAIs) are infections that develop in the hospital environment and can be acquired by a patient or hospital staff. They are complications that combine diverse risk factors that make an individual susceptible and are frequently caused by endogenous and exogenous bacterial agents. The most commonly studied etiological agents are bacteria and fungi, with the former representing the most common etiological agents reported to the Hospital Epidemiological Surveillance Network (RHOVE) between 2007 and 2012...
February 1, 2017: Clinical Laboratory
https://www.readbyqxmd.com/read/28180225/rediscovering-the-octapeptins
#9
REVIEW
Tony Velkov, Kade D Roberts, Jian Li
Covering: 1975 up to the end of 2016The decline in the discovery and development of novel antibiotics has resulted in the emergence of bacteria that are resistant to almost all available antibiotics. Currently, polymyxin B and E (colistin) are being used as the last-line therapy against life-threatening infections, unfortunately resistance to polymyxins in both the community and hospital setting is becoming more common. Octapeptins are structurally related non-ribosomal lipopeptide antibiotics that do not exhibit cross-resistance with polymyxins and have a broader spectrum of activity that includes Gram-positive bacteria...
February 9, 2017: Natural Product Reports
https://www.readbyqxmd.com/read/28164160/pseudomonas-aeruginosa-as-an-etiologic-agent-of-nephrolithiasis-in-deep-water-divers
#10
Victoria Y Bird, Ryan Chastain-Gross, Raymond Sutkowski, Vincent G Bird, Paulas Vyas, Ryan Joseph
Background: A number of occupations and professions may be associated with unique hazards relevant to urologic care. Case Presentation: We relate the presentation, care, and the occupational hazard of urinary tract infection (UTI), presenting as cystitis and pyelonephritis, with stone formation in a scuba diver. The patient voiced concern that his diving suit malfunction was related to his UTI and stone disease. We review the risk of UTI in the diving environment. We also report the development of infection-related stone in this case...
2017: Journal of Endourology Case Reports
https://www.readbyqxmd.com/read/28163137/resistance-to-polymyxins-in-gram-negative-organisms
#11
Katy Jeannot, Arnaud Bolard, Patrick Plésiat
Polymyxins have recently been re-introduced into the therapeutic arsenal to combat infections caused by multidrug-resistant Gram-negative bacteria. However, the emergence of strains resistant to these last-resort drugs is becoming a critical issue in a growing number of countries. Both intrinsic and transferable mechanisms of polymyxin resistance have been characterised. These mechanisms as well as the epidemiological data regarding four relevant bacterial pathogens (Escherichia coli, Klebsiella pneumoniae, Acinetobacter baumannii and Pseudomonas aeruginosa) are considered in this review...
February 3, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28160269/infections-in-cancer-patients-with-solid-tumors-a-review
#12
REVIEW
Kenneth V I Rolston
Solid tumors are much more common than hematologic malignancies. Although severe and prolonged neutropenia is uncommon, several factors increase the risk of infection in patients with solid tumors, and the presence of multiple risk factors in the same patient is not uncommon. These include obstruction (most often caused by progression of the tumor), disruption of natural anatomic barriers such as the skin and mucosal surfaces, and treatment-related factors such as chemotherapy, radiation, diagnostic and/or therapeutic surgical procedures, and the increasing use of medical devices such as various catheters, stents, and prostheses...
February 3, 2017: Infectious Diseases and Therapy
https://www.readbyqxmd.com/read/28157788/a-medical-mystery-unexplained-renal-failure-in-burn-patients
#13
Harrison M Lands, David B Drake
The objective of this study was to review the investigation that uncovered the medical mystery of burn patients developing unexpected renal failure. The authors examined published and unpublished manuscripts and case reports, as well as conducted personal interviews with primary sources. In the late 1970s, emergence of resistant bacterial strains to the topical antimicrobial silver sulfadiazine occurred at the University of Virginia Medical Center. In the search for an alternative topical antimicrobial with known coverage of Pseudomonas aeruginosa, Furacin Soluble Dressing was substituted...
January 31, 2017: Journal of Burn Care & Research: Official Publication of the American Burn Association
https://www.readbyqxmd.com/read/28151861/shifting-trends-in-microbial-keratitis-following-penetrating-keratoplasty-in-taiwan
#14
Hung-Chi Chen, Chia-Yi Lee, Hung-Yu Lin, David Hui-Kang Ma, Phil Yeong-Fong Chen, Ching-Hsi Hsiao, Hsin-Chiung Lin, Lung-Kun Yeh, Hsin-Yuan Tan
To investigate the clinical and microbiological profiles from microbial keratitis following penetrating keratoplasty (PKP) in a tertiary referral center in Taiwan, the medical records of 648 consecutive patients (648 eyes) undergoing PKP between January 2003 and December 2007 were retrospectively reviewed. Patients who subsequently sustained microbial keratitis were enrolled and analyzed for potential risk factors, clinical manifestations, microbiological profiles, complications, graft survival, and final visual outcome...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28151843/pseudomonas-aeruginosa-associated-diarrheal-diseases-in-children
#15
Chih-Hsien Chuang, Rajendra Prasad Janapatla, Yi-Hsin Wang, Hsin-Ju Chang, Yhu-Chering Huang, Tzou-Yien Lin, Cheng-Hsun Chiu
BACKGROUND: The gastrointestinal tract is not the common infection site of Pseudomonas aeruginosa. The role of P. aeruginosa as a causative agent for diarrhea in children without pre-existing disease is controversial. METHODS: From 2003 to 2012 we reviewed the records of 259 diarrheal patients less than 5 years of age whose stool culture grew P. aeruginosa. Virulence phenotypes of bacterial isolates were determined in vitro, including cytotoxicity, penetration and adherence to epithelial cells...
January 31, 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28149496/pseudomoniasis-phytotherapy-a-review-on-most-important-iranian-medicinal-plants-effective-on-pseudomonas-aeruginosa
#16
REVIEW
Mahmoud Bahmani, Mahmoud Rafieian-Kopaei, Hassan Hassanzadazar, Morovat Taherikalani
BACKGROUND AND OBJECTIVES: Pseudomonas aeruginosa is a Gram-negative, aerobic bacterium found in water and soil. It is a normal flora in skin and gastrointestinal tract of human beings. P. aeruginosa as an opportunistic pathogen involved in nosocomial infections having multiple pathogenic factors and shows high rate of resistance to different antibiotics. The aim of this study was to identify the most important native medicinal plants of Iran effective on P. aeruginosa. MATERIALS AND METHODS: All required information was obtained by searching keywords such as P...
October 2016: Iranian Journal of Microbiology
https://www.readbyqxmd.com/read/28135043/household-proximity-to-water-and-nontuberculous-mycobacteria-in-children-with-cystic-fibrosis
#17
Jennifer M Bouso, James J Burns, Raid Amin, Floyd R Livingston, Okan Elidemir
BACKGROUND: Nontuberculous mycobacteria (NTM) have a particular affinity for patients with cystic fibrosis (CF). Recent studies suggest a possible relationship between acquiring NTM and the level of environmental water in a given area. We sought to determine if there is an association between household proximity to water and NTM in children with CF. MATERIALS AND METHODS: An IRB-approved retrospective chart review was completed on 150 children with CF in Florida...
January 30, 2017: Pediatric Pulmonology
https://www.readbyqxmd.com/read/28129812/cystic-fibrosis-transmembrane-conductance-regulator-related-metabolic-syndrome-and-cystic-fibrosis-screen-positive-inconclusive-diagnosis
#18
Clement L Ren, Drucy S Borowitz, Tanja Gonska, Michelle S Howenstine, Hara Levy, John Massie, Carlos Milla, Anne Munck, Kevin W Southern
OBJECTIVE: An unintended consequence of cystic fibrosis (CF) newborn screening (NBS) is the identification of infants with a positive NBS test but inconclusive diagnostic testing. These infants are classified as CF transmembrane conductance regulator-related metabolic syndrome (CRMS) in the US and CF screen positive, inconclusive diagnosis (CFSPID) in other countries. Diagnostic and management decisions of these infants are challenges for CF healthcare professionals and stressful situations for families...
February 2017: Journal of Pediatrics
https://www.readbyqxmd.com/read/28126666/design-synthesis-and-spectroscopic-characterization-of-metal-ii-complexes-derived-from-a-tetradentate-macrocyclic-ligand-study-on%C3%A2-antimicrobial-and-antioxidant-capacity-of-complexes
#19
Parveez Gull, Manzoor Ahmad Malik, Ovas Ahmad Dar, Athar Adil Hashmi
The paper presents the synthesis of Co(II), Ni(II) and Cu(II) complexes of macrocyclic Schiff base ligand derived from 1, 4-dicarbonyl-phenyl-dihydrazide and ethyl 3-oxobutanoate (2:2). The synthesized ligand and its metal complexes were characterized by elemental analyses, magnetic susceptibility measurements, FTIR, UV-Vis., mass (1)H NMR and X-ray diffraction. The Cu(II) complex exhibit distorted octahedral geometry, whereas an octahedral geometry is suggested for other complexes. The synthesized compounds were screened in vitro for their antimicrobial activities to evaluate their inhibiting potential against bacterial species Pseudomonas aeruginosa, Escherichia coli, Salmonella typhimurium, Staphylococcus aureus and fungal species include Aspergillus flavus, Aspergillus fumingatus, and Candida albicans...
January 23, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28122803/a-decade-of-development-of-chromogenic-culture-media-for-clinical-microbiology-in-an-era-of-molecular-diagnostics
#20
REVIEW
John D Perry
In the last 25 years, chromogenic culture media have found widespread application in diagnostic clinical microbiology. In the last decade, the range of media available to clinical laboratories has expanded greatly, allowing specific detection of additional pathogens, including Pseudomonas aeruginosa, group B streptococci, Clostridium difficile, Campylobacter spp., and Yersinia enterocolitica. New media have also been developed to screen for pathogens with acquired antimicrobial resistance, including vancomycin-resistant enterococci, carbapenem-resistant Acinetobacter spp...
April 2017: Clinical Microbiology Reviews
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