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Antimicrobial therapy

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https://www.readbyqxmd.com/read/28222319/survey-of-the-diagnostic-and-therapeutic-approach-to-new-onset-refractory-status-epilepticus
#1
Christian M Cabrera Kang, Nicolas Gaspard, Suzette M LaRoche, Brandon Foreman
PURPOSE: We conducted a survey of providers to assess for practice patterns in diagnosing and treating new-onset refractory status epilepticus (NORSE). NORSE is the occurrence of prolonged seizures that are not responsive to initial therapies in otherwise healthy individuals without obvious cause on initial presentation. This entity is thought to have multiple etiologies, including autoimmune. METHOD: A 29-question electronic survey was sent to providers included in the Neurocritical Care Society emailing list...
February 9, 2017: Seizure: the Journal of the British Epilepsy Association
https://www.readbyqxmd.com/read/28219826/hot-topics-in-reactive-oxygen-therapy-antimicrobial-and-immunological-mechanisms-safety-and-clinical-applications
#2
REVIEW
Matthew Dryden, Jonathan Cooke, Rami Salib, Rebecca Holding, Sylvia Pender, Jill Brooks
Reactive oxygen species (ROS), when combined with various delivery mechanisms, has the potential to become a powerful novel therapeutic agent against difficult-to-treat infections, especially those involving biofilm. It is important in the context of the global antibiotic resistance crisis. ROS is rapidly active in vitro against all Gram-positive and Gram-negative bacteria tested. ROS also has antifungal and antiviral properties. ROS prevents the formation of biofilms caused by a range of bacterial species in wounds and respiratory epithelium...
February 17, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/28218980/microbiologic-yield-of-bronchoalveolar-lavage-specimens-from-stem-cell-transplant-recipients
#3
Kenneth K Sakata, Christine L Klassen, Kathryn B Bollin, Thomas E Grys, James L Slack, Lewis J Wesselius, Holenarasipur R Vikram
PURPOSE: Stem cell transplant (SCT) recipients commonly undergo bronchoalveolar lavage (BAL) collection as an infectious pulmonary work-up. Previous studies report the utility and overall diagnostic yield of fiberoptic bronchoscopy with BAL in this vulnerable population, though none focused purely on microbiologic yield or made comparisons with less invasive means of pathogen detection. We sought to determine and elaborate on the microbiologic yield of BAL in SCT recipients, assess a correlation between BAL studies and less invasive means of pathogen detection, and assess the utility of repeating a BAL within 30 days...
February 20, 2017: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/28218019/nucleic-acid-amplification-methodologies-for-the-detection-of-pulmonary-mold-infections
#4
Matthew William McCarthy, Ruta Petraitiene, Thomas J Walsh
The detection of pulmonary mold infections has historically required technically demanding methods obtained through invasive procedures. Nucleic acid amplification assays have the potential to circumvent the technical hurdles associated with diagnosis, but are not without potential pitfalls. Areas covered: In this paper, the authors review new assays for the diagnosis of pulmonary mold infections due to aspergillosis, mucormycosis, and hyalohyphomycoses as well as uncommon infections caused by dematiaceous molds...
March 2017: Expert Review of Molecular Diagnostics
https://www.readbyqxmd.com/read/28217125/the-structure-and-function-of-the-gram-positive-bacterial-rna-degradosome
#5
REVIEW
Kyu Hong Cho
The RNA degradosome is a highly structured protein complex responsible for bulk RNA decay in bacteria. The main components of the complex, ribonucleases, an RNA helicase, and glycolytic enzymes are well-conserved in bacteria. Some components of the degradosome are essential for growth and the disruption of degradosome formation causes slower growth, indicating that this complex is required for proper cellular function. The study of the Escherichia coli degradosome has been performed extensively for the last several decades and has revealed detailed information on its structure and function...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28216302/long-term-antimicrobial-effect-of-nisin-released-from-electrospun-triaxial-fiber-membranes
#6
Daewoo Han, Shalli Sherman, Shaun Filocamo, Andrew J Steckl
: Electrospun membranes encapsulating nisin in the core of multi-layer coaxial fibers, with a hydrophobic PCL intermediate layer and a hygroscopic cellulose acetate sheath, have been demonstrated to provide long-term antimicrobial activity combined with a hygroscopic outer layer. Antimicrobial performance has been evaluated using modified versions of the antimicrobial textile test AATCC 100 and AATCC 147 against Staphylococcus aureus. The AATCC 147 tests indicate that antimicrobial activity persists up to 7 days...
February 16, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28216180/utility-of-16s-rrna-pcr-performed-on-clinical-specimens-in-patient-management
#7
A Akram, M Maley, I Gosbell, T Nguyen, R Chavada
BACKGROUND: Broad range PCR 16S rRNA can be used for detection and identification of bacteria from clinical specimens in patients with high suspicion of infection and negative cultures. Aim of this study was 1) to compare 16S rRNA PCR (16S) results with microbiological cultures 2) to assess utility of 16S on antimicrobial therapy 3) to compare the yield of 16S on different type of clinical specimen and cost analysis of test. METHODS: A retrospective study was done on different clinical specimens which had 16S performed over 3 years (2012-2015)...
February 16, 2017: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/28216095/real-time-quantitative-reverse-transcription-pcr-analysis-of-expression-stability-of-aggregatibacter-actinomycetemcomitans-fimbria-associated-gene-in-response-to-photodynamic-therapy
#8
Maryam Pourhajibagher, Abbas Monzavi, Nasim Chiniforush, Mohammad Moein Monzavi, Shaghayegh Sobhani, Sima Shahabi, Abbas Bahador
BACKGROUND: Aggregatibacter actinomycetemcomitans is an etiological agent of both chronic and aggressive periodontitis. Dissemination of A. actinomycetemcomitans from the oral cavity and initiation of systemic infections has led to new approaches for treatment being needed. In this study, a series of experiments presented investigated the effect of methylene blue (MB)-mediated antimicrobial photodynamic therapy (aPDT) on cell viability and expression of fimbria-associated gene (rcpA) in A...
February 16, 2017: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/28215515/how-to-get-along-with-antibiotic-stewardship-and-empirical-antibiotic-treatment-in-cirrhotic-patients
#9
REVIEW
Valentina Zuccaro, Paola Columpsi, Paolo Sacchi, Maria Grazia Lucà, Stefano Fagiuoli, Raffaele Bruno
The aim of this review is to focus on the recent knowledge on antibiotic stewardship and empiric antibiotic treatment in cirrhotic patients. The application of antimicrobial stewardship (AMS) rules appears to be the most appropriate strategy to globally manage cirrhotic patients with infectious complications: indeed they represent a unique way to provide both early diagnosis and appropriate therapy in order to avoid not only antibiotic over-prescription but, more importantly, selection and spread of antimicrobial resistance...
January 22, 2017: Digestive and Liver Disease
https://www.readbyqxmd.com/read/28215487/executive-summary-of-management-of-prosthetic-joint-infections-clinical-practice-guidelines-by-the-spanish-society-of-infectious-diseases-and-clinical-microbiology-seimc
#10
Javier Ariza, Javier Cobo, Josu Baraia-Etxaburu, Natividad de Benito, Guillermo Bori, Javier Cabo, Pablo Corona, Jaime Esteban, Juan Pablo Horcajada, Jaime Lora-Tamayo, Oscar Murillo, Julián Palomino, Jorge Parra, Carlos Pigrau, José Luis Del Pozo, Melchor Riera, Dolores Rodríguez, Mar Sánchez-Somolinos, Alex Soriano, M Dolores Del Toro, Basilio de la Torre
The incidence of prosthetic joint infection (PJI) is expected to increase in the coming years. PJI has serious consequences for patients, and high costs for the health system. The complexity of these infections makes it necessary to organize the vast quantity of information published in the last several years. The indications for the choice of a given surgical strategy and the corresponding antimicrobial therapy are specifically reviewed. The authors selected clinically relevant questions and then reviewed the available literature in order to give recommendations according to a pre-determined level of scientific evidence...
February 16, 2017: Enfermedades Infecciosas y Microbiología Clínica
https://www.readbyqxmd.com/read/28215171/oral-colonization-by-nosocomial-pathogens-during-hospitalization-in-invasive-care-unit-and-prevention-strategies
#11
Hossein Kazemian, Samane Bourbour, Maryam Beheshti, Abbas Bahador
BACKGROUND: Critically ill patients are very susceptible to a variety of disorders and infections during hospitalization in Intensive Care Units (ICU). Among these problems, nosocomial infections are major causes of morbidity and mortality. METHODS: Nosocomial pneumonias, specifically ventilator associated pneumonias have become a major health care issue. The implication of oral care in hospital presents challenges that can prevent or reduce the risk of nosocomial pneumonias in ICU...
February 15, 2017: Recent Patents on Anti-infective Drug Discovery
https://www.readbyqxmd.com/read/28214718/alkyl-substituent-effect-on-photosensitized-inactivation-of-escherichia-coli-by-pyridinium-bonded-p-porphyrins
#12
Jin Matsumoto, Yusaku Suemoto, Hiroki Kanemaru, Kyosuke Takemori, Masato Shigehara, Akari Miyamoto, Haruhiko Yokoi, Masahide Yasuda
Activity of singlet oxygen sensitizers for photoinactivation of bacteria and photodynamic therapy of tumor cells has been evaluated using nonpathogenic model cells, such as Escherichia coli, Saccharomyces cerevisiae, and HeLa cells. Among them, E. coli, gram-negative bacterium, has complex membrane structures in the cell wall, resulting in an impermeable barrier to antimicrobial agents. Therefore, few singlet oxygen sensitizers have photoinactivation activities toward E. coli at low concentrations. Recently polycationic porphyrins have received much attention as a new type of singlet oxygen sensitizers because they have strong binding affinities for DNA and proteins...
February 6, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28213808/genotyping-and-antifungal-susceptibility-of-dipodascus-capitatus-isolated-in-a-neonatal-intensive-care-unit-of-a-sicilian-hospital
#13
Teresa Fasciana, Mario Giuffrè, Cinzia Calà, Ingrid Anne Mandy Schierz, Giuseppe Aquilina, Giuseppa Pinello, Giuseppina Capra, Dario Lipari, Giovanni Corsello, Anna Giammanco
In August 2015, Dipodascus capitatus was isolated from two patients admitted to the neonatal intensive care unit. Nosocomial acquisition of the fungus was suspected and epidemiological studies were undertaken. The patients were simultaneously hospitalized, and the comparison of the two isolates by two independent molecular typing methods have confirmed clonal dissemination of a single strain of D. capitatus. Antimicrobial susceptibility testing was useful for identifying the appropriated antifungal therapy in micafungin...
February 18, 2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28212158/an-integrated-understanding-of-the-immunology-of-allograft-inflammation
#14
Brenna Houlihan, Priscilla Cha, Michael Zasloff, Thomas M Fishbein, Alexander Kroemer
PURPOSE OF REVIEW: The purpose of this review is to summarize recent advances in our understanding of the complex immunology of intestinal transplantation and allograft rejection. RECENT FINDINGS: Recent findings highlight the importance of the intestinal microbiome for intestinal homeostasis and the role of newly discovered innate lymphoid cells in intestinal transplantation. In addition, the role of host antimicrobial Th17 responses in the pathogenesis of inflammatory bowel diseases and intestinal allograft rejection has been further elucidated...
February 15, 2017: Current Opinion in Organ Transplantation
https://www.readbyqxmd.com/read/28210888/double-carbapenem-combination-as-salvage-therapy-for-untreatable-infections-by-kpc-2-producing-klebsiella-pneumoniae
#15
M Souli, I Karaiskos, A Masgala, L Galani, E Barmpouti, H Giamarellou
We report our experience using the double-carbapenem combination as salvage therapy for patients with untreatable infections caused by KPC-2- producing Klebsiella pneumoniae. A total of 27 patients in two institutions in Athens, Greece suffering from complicated urinary tract infections (16) with or without secondary bacteraemia (four and 12 respectively), primary (six) or catheter-related bloodstream infections (two), HAP or VAP (two) and external ventricular drainage infection (one) were treated exclusively with ertapenem and high-dose prolonged infusion meropenem because in-vitro active antimicrobials were unavailable (19) or failed (four) or were contraindicated (six)...
February 16, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28209778/role-for-dithiolopyrrolones-in-disrupting-bacterial-metal-homeostasis
#16
Andrew N Chan, Anthony L Shiver, Walter J Wever, Sayyeda Zeenat A Razvi, Matthew F Traxler, Bo Li
Natural products harbor unique and complex structures that provide valuable antibiotic scaffolds. With an increase in antibiotic resistance, natural products once again hold promise for new antimicrobial therapies, especially those with unique scaffolds that have been overlooked due to a lack of understanding of how they function. Dithiolopyrrolones (DTPs) are an underexplored class of disulfide-containing natural products, which exhibit potent antimicrobial activities against multidrug-resistant pathogens...
February 16, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28209748/the-use-of-hyperbaric-oxygen-for-the-prevention-and-management-of-osteoradionecrosis-of-the-jaw-a-dana-farber-brigham-and-women-s-cancer-center-multidisciplinary-guideline
#17
REVIEW
Ahmed Sultan, Glenn J Hanna, Danielle N Margalit, Nicole Chau, Laura A Goguen, Francisco M Marty, Guilherme Rabinowits, Jonathan D Schoenfeld, Stephen T Sonis, Tom Thomas, Roy B Tishler, Nathaniel S Treister, Alessandro Villa, Sook-Bin Woo, Robert Haddad, Hani Mawardi
BACKGROUND: Osteoradionecrosis of the jaw (ORN) is an infrequent yet potentially devastating complication of radiation therapy to the head and neck region. Treatment options include antimicrobial therapy, local sequestrectomy, resection, and the use of hyperbaric oxygen (HBO). Published data on ORN are difficult to compare because of the lack of a universally accepted classification and staging system, and the literature on the use of HBO to either prevent or successfully manage ORN is controversial and inconclusive...
February 16, 2017: Oncologist
https://www.readbyqxmd.com/read/28209403/small-molecules-that-sabotage-bacterial-virulence
#18
REVIEW
Benjamin K Johnson, Robert B Abramovitch
The continued rise of antibiotic-resistant bacterial infections has motivated alternative strategies for target discovery and treatment of infections. Antivirulence therapies function through inhibition of in vivo required virulence factors to disarm the pathogen instead of directly targeting viability or growth. This approach to treating bacteria-mediated diseases may have advantages over traditional antibiotics because it targets factors specific for pathogenesis, potentially reducing selection for resistance and limiting collateral damage to the resident microbiota...
February 13, 2017: Trends in Pharmacological Sciences
https://www.readbyqxmd.com/read/28209400/multidrug-resistant-enterococcal-infections-new-compounds-novel-antimicrobial-therapies
#19
REVIEW
Roel M van Harten, Rob J L Willems, Nathaniel I Martin, Antoni P A Hendrickx
Over the past two decades infections due to antibiotic-resistant bacteria have escalated world-wide, affecting patient morbidity, mortality, and health care costs. Among these bacteria, Enterococcus faecium and Enterococcus faecalis represent opportunistic nosocomial pathogens that cause difficult-to-treat infections because of intrinsic and acquired resistance to a plethora of antibiotics. In recent years, a number of novel antimicrobial compound classes have been discovered and developed that target Gram-positive bacteria, including E...
February 13, 2017: Trends in Microbiology
https://www.readbyqxmd.com/read/28205640/quantitative-bioassay-to-identify-antimicrobial-drugs-through-drug-interaction-fingerprint-analysis
#20
Zohar B Weinstein, Muhammad H Zaman
Drug interaction analysis, which reports the extent to which the presence of one drug affects the efficacy of another, is a powerful tool to select potent combinatorial therapies and predict connectivity between cellular components. Combinatorial effects of drug pairs often vary even for drugs with similar mechanism of actions. Therefore, drug interaction fingerprinting may be harnessed to differentiate drug identities. We developed a method to analyze drug interactions for the application of identifying active pharmaceutical ingredients, an essential step to assess drug quality...
February 16, 2017: Scientific Reports
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