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https://www.readbyqxmd.com/read/28923865/an-in-vitro-comparison-of-ceftolozane-tazobactam-compared-to-traditional-beta-lactams-as-an-alternative-to-combination-antimicrobial-therapy-for-pseudomonas-aeruginosa
#1
Kellie J Goodlet, David P Nicolau, Michael D Nailor
Background: Guidelines for sepsis, febrile neutropenia, and hospital-acquired pneumonia include empiric regimens incorporating two antibiotics from different classes with activity against Pseudomonas aeruginosa for select at-risk patients to increase the likelihood of susceptibility to at least one agent.Objectives: The activity and cross-resistance rates of ceftolozane/tazobactam were compared to β-lactam comparators cefepime, ceftazidime, piperacillin/tazobactam, and meropenem alone and cumulatively with ciprofloxacin or tobramycin against P...
September 18, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28923605/microbial-pathogenicity-and-virulence-mediated-by-integrons-on-gram-positive-microorganisms
#2
REVIEW
Yanmei Li, Ling Yang, Jie Fu, Muxia Yan, Dingqiang Chen, Li Zhang
Gram-positive microorganisms are one of leading pathogenic microorganisms in public health, including several typical "Super Bugs" as methicillin-resistant Staphylococcus aureus, Klebsiella pneumoniae carbapenemase and vancomycin-resistant enterococci, which caused a increasement of infections, clinical failures and expenses. Regarded as a common genetic element responsible for horizontal gene transfer, integrons are widely distributed in various pathogens considered as a determinant in the acquisition and evolution of antibiotic resistance...
September 15, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28923604/study-on-the-excision-and-integration-mediated-by-class-1-integron-in-streptococcus-pneumoniae
#3
Qun Lin, Pusheng Xu, Jiaowu Li, Jinhua Huang, Yin Chen, Shuhuan Deng
As a novel antibiotic resistance mobile element, integron was recognized as a primary source of antibiotic genes among Gram-positive organisms for its excision and integration of exogenous genes. In this study, Streptococcus pneumoniae was subjected to investigate the excision and integration of class 1 integron with eight different plasmids. As the results indicated, excision in both att site and gene cassettes were successfully observed, which was further confirmed by integration assays and PCR amplification...
September 16, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28922566/streptococcus-pneumoniae-and-chronic-endobronchial-infections-in-childhood
#4
Kim M Hare, Amanda J Leach, Heidi C Smith-Vaughan, Anne B Chang, Keith Grimwood
Streptococcus pneumoniae (pneumococcus) is the main cause of bacterial pneumonia worldwide and has been studied extensively in this context. However, its role in chronic endobronchial infections and accompanying lower airway neutrophilic infiltration has received little attention. Severe and recurrent pneumonia are risk factors for chronic suppurative lung disease (CSLD) and bronchiectasis; the latter causes considerable morbidity and, in some populations, premature death in children and adults. Protracted bacterial bronchitis (PBB) is another chronic endobronchial infection associated with substantial morbidity...
September 18, 2017: Pediatric Pulmonology
https://www.readbyqxmd.com/read/28922054/economic-burden-of-pneumococcal-infections-in-children-under-5%C3%A2-years-of-age
#5
Mehmet Ceyhan, Yasemin Ozsurekci, Kubra Aykac, Basak Hacibedel, Egemen Ozbilgili
The present study aimed to determine the cost of childhood pneumococcal infections under 5 years of age and to provide further data for future health economy studies. Electronic medical records of children diagnosed with meningitis caused by S. pneumoniae and all-cause pneumonia, and acute otitis media (AOM) between January 2013-April 2014 were retrospectively evaluated. Direct costs for the treatments of hospitalized patients (pneumonia and pneumococcal meningitis) including costs of healthcare services consisted of costs of hospital bed, examination, laboratory analyses, scanning methods, consultation, vascular access procedures, and infusion and intravenous treatments...
September 18, 2017: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/28920786/cryptococcus-neoformans-var-grubii-associated-renal-amyloidosis-causing-protein-losing-nephropathy-in-a-red-kangaroo-macropus-rufus
#6
Mary Irene Thurber, Jenessa Gjeltema, Matthew Sheley, Ray F Wack
A 10-year-old male castrated red kangaroo (Macropus rufus) presented with mandibular swelling. Examination findings included pitting edema with no dental disease evident on examination or radiographs. The results of blood work were moderate azotemia, hypoalbuminemia, and severely elevated urine protein:creatinine ratio (9.9). Radiographs showed an interstitial pattern of the caudal right lung, and an abdominal ultrasound demonstrated scant effusion. Symptomatic and empirical therapy with antibiotics, anti-inflammatory drugs, and an angiotensin-converting enzyme (ACE) inhibitor did not resolve clinical signs...
September 2017: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/28919718/extended-infusion-versus-intermittent-infusion-of-imipenem-in-the-treatment-of-ventilator-associated-pneumonia
#7
Mohamed M Ibrahim, Tarek Fouad Tammam, Mohy El Deen Ebaed, Hatem A Sarhan, Gamal F Gad, Amal K Hussein
BACKGROUND: Mechanical ventilation support can be the main source of ventilator-associated pneumonia (VAP). VAP is a serious infection that may be associated with dangerous gram-negative bacteria mainly, and it leads to an increase in the mortality in the intensive care unit (ICU). Imipenem is one of the strongest antibiotics now available for treating VAP which is associated with gram-negative and gram-positive bacteria, and it belongs to beta-lactam antibiotic group (carbapenem). OBJECTIVE: This study tried to investigate the efficacy of imipenem against VAP when it was infused within 180 min versus the efficacy when it was infused within 30-60 min...
2017: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/28918351/susceptibility-profiles-of-bacteria-causing-urinary-tract-infection-in-southern-tunisia
#8
Sonda Guermazi-Toumi, Sirine Boujlel, Mouna Assoudi, Riadh Issaoui, Sonia Tlili, Mohamed Ennaceur Hlaiem
OBJECTIVES: The aim of this study was to determine the epidemiological profile and the antibiotic resistance of bacteria responsible for urinary infections diagnosed in the department of microbiology of the regional hospital Houcine Bouzaiene (Gafsa) in the south west of Tunisia. METHODS: All the cytobacteriological urine samples analyzed from 1 January 2015 to 30 June 2016 were included in the study. The adopted criteria to define urinary infection were: leukocyturia >10(4)/ml and bacteriuria >10(5)CFU/ml...
September 13, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/28915392/impact-of-antibiotic-therapy-in-severe-community-acquired-pneumonia-data-from-the-infauci-study
#9
J M Pereira, J Gonçalves-Pereira, O Ribeiro, J P Baptista, F Froes, J A Paiva
Antibiotic therapy (AT) is the cornerstone of the management of severe community-acquired pneumonia (CAP). However, the best treatment strategy is far from being established. To evaluate the impact of different aspects of AT on the outcome of critically ill patients with CAP, we performed a post hoc analysis of all CAP patients enrolled in a prospective, observational, multicentre study. Of the 502 patients included, 76% received combination therapy, mainly a β-lactam with a macrolide (80%). AT was inappropriate in 16% of all microbiologically documented CAP (n=177)...
September 4, 2017: Journal of Critical Care
https://www.readbyqxmd.com/read/28915364/nosocomial-multidrug-resistant-klebsiella-pneumoniae-strains-isolated-from-mexico-city-produce-robust-biofilms-on-abiotic-surfaces-but-not-on-human-lung-cells
#10
Martha Lorena Ostria-Hernandez, Karla Cecilia Juárez-de la Rosa, Patricia Arzate-Barbosa, Antonino Lara-Hernández, Fuminori Sakai, J Antonio Ibarra, Graciela Castro-Escarpulli, Jorge E Vidal
BACKGROUND: Klebsiella pneumoniae (Kpn) strains are a leading cause of hospital-acquired infections, including ventilator-associated pneumonia. Resistance to antibiotics, biofilm formation, and the production of certain fimbriae play an important role in the pathogenesis. AIM: We investigated the genetic relatedness, antibiotic resistance, virulence potential, and ability to form biofilms of Kpn strains isolated from hospital-acquired infections (n = 76). Strains were isolated at three major hospitals serving the largest metropolitan urban area in Mexico City, Mexico...
September 15, 2017: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/28912822/a-rare-case-of-cavitary-lesion-of-the-lung-caused-by-mycoplasma-pneumoniae-in-an-immunocompetent-patient
#11
Muhammad Kashif, Rizwan Ahmed Dudekula, Misbahuddin Khaja
Mycoplasma pneumoniae is an atypical bacterium that most commonly causes upper respiratory tract infections, but it can also cause pneumonia, referred to as "walking pneumonia." Although cavitary lesions are present in a wide variety of infectious and noninfectious processes, those attributable to M. pneumoniae are extremely uncommon; thus, to date, epidemiological studies are lacking. Here, we present a rare case of a 20-year-old male, referred to us from a psychiatric facility for evaluation of a cough, who was found to have a cavitary lesion in the right upper lobe...
2017: Case Reports in Medicine
https://www.readbyqxmd.com/read/28911062/tpf-plus-cetuximab-induction-chemotherapy-followed-by-biochemoradiation-with-weekly-cetuximab-plus-weekly-cisplatin-or-carboplatin-a-randomized-phase-ii-eortc-trial
#12
P M Specenier, E Remenar, J Buter, D L Schrijvers, C Bergamini, L F Licitra, A Awada, P M Clement, C Fortpied, J Menis, J B Vermorken
Background: Our aim was to test the safety of cetuximab added to chemoradiation with either cisplatin or carboplatin after prior induction chemotherapy. Methods: Patients with stage III/IV unresectable, squamous cell carcinoma of the head and neck received up to four cycles of TPF-E (cisplatin and docetaxel 75 mg/m2 on day 1 followed by 5-FU 750 mg/m2/day as a continuous infusion on days 1-5 plus cetuximab at a loading dose of 400 mg/m2 followed by a weekly dose of 250 mg/m2), with prophylactic antibiotics but no growth factors...
September 1, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/28906397/clinical-and-microbiological-characteristics-of-pyogenic-liver-abscess-in-a-tertiary-hospital-in-east-china
#13
Haishen Kong, Fei Yu, Weili Zhang, Xuefen Li
Pyogenic liver abscess (PLA) is a potentially life-threatening disease affecting many parts of the world, especially Asia. In this study, we explored the clinical and microbiological characteristics of PLA in Chinese patients.A 5-year (2010-2014) retrospective review of medical records on all PLA patients who were admitted to a tertiary teaching hospital was performed.Among 217 PLA cases who were confirmed cultural positive, Klebsiella pneumonia (K pneumonia) was the most common pathogen (n = 165, 76.0%), followed by Escherichia coli (n = 21, 9...
September 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28906137/treatment-of-achromobacter-ventilator-associated-pneumonia-in-critically-ill-trauma-patients
#14
G Christopher Wood, Brittany L Jonap, George O Maish, Louis J Magnotti, Joseph M Swanson, Bradley A Boucher, Martin A Croce, Timothy C Fabian
BACKGROUND: Achromobacter sp are nonfermenting Gram-negative bacilli (NFGNB) that rarely cause severe infections, including ventilator-associated pneumonia (VAP). Data on the treatment of Achromobacter pneumonia are very limited, and the organism has been associated with a high mortality rate. Thus, more data are needed on treating this organism. OBJECTIVE: To evaluate the treatment of Achromobacter VAP in critically ill trauma patients. METHODS: This retrospective, observational study evaluated critically ill trauma patients who developed Achromobacter VAP...
September 1, 2017: Annals of Pharmacotherapy
https://www.readbyqxmd.com/read/28905531/elucidation-of-bacterial-pneumonia-causing-pathogens-in-patients-with-respiratory-viral-infection
#15
Hwa Sik Jung, Byung Ju Kang, Seung Won Ra, Kwang Won Seo, Yangjin Jegal, Jae Bum Jun, Jiwon Jung, Joseph Jeong, Hee Jeong Jeon, Jae Sung Ahn, Taehoon Lee, Jong Joon Ahn
BACKGROUND: Bacterial pneumonia occurring after respiratory viral infection is common. However, the predominant bacterial species causing pneumonia secondary to respiratory viral infections other than influenza remain unknown. The purpose of this study was to know whether the pathogens causing post-viral bacterial pneumonia vary according to the type of respiratory virus. METHODS: Study subjects were 5,298 patients, who underwent multiplex real-time polymerase chain reaction for simultaneous detection of respiratory viruses, among who visited the emergency department or outpatient clinic with respiratory symptoms at Ulsan University Hospital between April 2013 and March 2016...
September 1, 2017: Tuberculosis and Respiratory Diseases
https://www.readbyqxmd.com/read/28904980/enterovirus-human-rhinovirus-a-rare-cause-of-acute-respiratory-distress-syndrome
#16
Parita Soni, Anand Rai, Nidhi Aggarwal, Stephan Kamholz, Taek Yoon, Yizhak Kupfer
A 22-year-old Asian woman presented with respiratory distress, cough, and wheezing for 1 week. Prior history included asthma and Turner syndrome. On presentation to the emergency department, the patient was hypotensive, tachycardic, tachypneic, with an oxyhemoglobin saturation in the mid 80% range while breathing ambient air. Chest radiograph revealed pulmonary vascular congestion and a left lower lobe infiltrate. Endotracheal intubation, mechanical ventilation, and vasopressors were initiated. Empiric therapy for community-acquired pneumonia was administered utilizing broad-spectrum intravenous antibiotics...
July 2017: Journal of Investigative Medicine High Impact Case Reports
https://www.readbyqxmd.com/read/28904944/antibacterial-and-antibiotic-modifying-activity-of-methanol-extracts-from-six-cameroonian-food-plants-against-multidrug-resistant-enteric-bacteria
#17
Joachim K Dzotam, Victor Kuete
The present work was designed to investigate the antibacterial activities of methanol extracts from six Cameroonian edible plants and their synergistic effects with some commonly used antibiotics against multidrug-resistant (MDR) Gram-negative bacteria expressing active efflux pumps. The extracts were subjected to qualitative phytochemical screening and the microdilution broth method was used for antibacterial assays. The results of phytochemical tests indicate that all tested crude extracts contained polyphenols, flavonoids, triterpenes, and steroids...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28903506/a-population-based-assessment-of-the-impact-of-7-and-13-valent-pneumococcal-conjugate-vaccines-on-macrolide-resistant-invasive-pneumococcal-disease-emergence-and-decline-of-streptococcus-pneumoniae-serotype-19a-cc320-with-dual-macrolide-resistance-mechanisms
#18
Max R Schroeder, Scott T Chancey, Stephanie Thomas, Wan-Hsuan Kuo, Sarah W Satola, Monica M Farley, David S Stephens
Background: Macrolide efflux encoded by mef(E)/mel and ribosomal methylation encoded by erm(B) confer most macrolide resistance in Streptococcus pneumoniae. Introduction of the heptavalent pneumococcal conjugate vaccine (PCV7) in 2000 reduced macrolide-resistant invasive pneumococcal disease (MR-IPD) due to PCV7 serotypes (6B, 9V, 14, 19F, and 23F). Methods: In this study, the impact of PCV7 and PCV13 on MR-IPD was prospectively assessed. A 20-year study of IPD performed in metropolitan Atlanta, Georgia, using active, population-based surveillance formed the basis for this study...
September 15, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28901763/bioassay-guided-isolation-of-antibacterial-metabolites-from-emericella-sp-tj29
#19
Yan He, Zhengxi Hu, Qin Li, Jinfeng Huang, Xiao-Nian Li, Hucheng Zhu, Junjun Liu, Jianping Wang, Yongbo Xue, Yonghui Zhang
Bioassay-guided isolation of metabolites from cultures of the plant-derived fungus Emericella sp. TJ29 yielded three new terpene-polyketide hybrid meroterpenoids, emervaridones A-C (1-3), two new polyketides, varioxiranediols A and B (5 and 6), and three known analogues (4, 7, and 8). The structures and absolute configurations of these new compounds were elucidated by spectroscopic analyses, single-crystal X-ray diffraction, Mo2(OAc)4-induced electronic circular dichroism (ECD) data, and ECD calculations. To date, only one compound (4) bearing the emervaridone-type carbocyclic skeleton has been reported...
September 13, 2017: Journal of Natural Products
https://www.readbyqxmd.com/read/28900525/a-case-of-legionella-pneumophila-evaluated-with-ct-and-ultrasound
#20
Alessio D'Angelo, Chiara De Simone, Marco Pagnottella, Stefano Rossi, Raffaele Pepe, Giacomo Ruggieri, Giulio Cocco, Cosima Schiavone
A 36-year-old man was admitted to the emergency department of "SS Annunziata" hospital in Chieti complaining of a sharp chest pain arisen some hours before admission. On examination, the patient looked sweaty; his vital signs showed tachycardia and augmented breath rate; sinus tachycardia and normal ventricular repolarization were observed on ECG, and no abnormalities were observed in the echoscan of the hearth. According to the clinical and electrocardiographic findings, and to previous episode of DVT in anamnesis, a thorax CT scan was performed in order to rule out pulmonary embolism...
September 2017: Journal of Ultrasound
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