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https://www.readbyqxmd.com/read/29449440/lung-clearance-index-to-monitor-treatment-response-in-pulmonary-exacerbations-in-preschool-children-with-cystic-fibrosis
#1
Jonathan H Rayment, Sanja Stanojevic, Stephanie D Davis, George Retsch-Bogart, Felix Ratjen
BACKGROUND: Antibiotic treatment for pulmonary symptoms in preschool children with cystic fibrosis (CF) varies among clinicians. The lung clearance index (LCI) is sensitive to early CF lung disease, but its utility to monitor pulmonary exacerbations in young children has not been assessed. OBJECTIVE: We aim to (1) understand how LCI changes during lower respiratory tract symptoms relative to a recent clinically stable measurement, (2) determine whether LCI can identify antibiotic treatment response and (3) compare LCI changes to changes in spirometric indices...
February 15, 2018: Thorax
https://www.readbyqxmd.com/read/29449345/antimicrobial-activity-of-a-novel-bioengineered-honey-against-non-typeable-haemophilus-influenzae-biofilms-an-in-vitro-study
#2
Rachel S Newby, Matthew Dryden, Raymond N Allan, Rami J Salib
The opportunistic pathogen non-typeable Haemophilus influenzae (NTHi) plays an important role in many chronic respiratory diseases including otitis media, chronic rhinosinusitis, cystic fibrosis and chronic obstructive pulmonary disease. Biofilm formation has been implicated in NTHi colonisation, persistence of infection and recalcitrance towards antimicrobials. There is therefore a pressing need for the development of novel treatment strategies that are effective against NTHi biofilm-associated diseases. SurgihoneyRO is a honey-based product that has been bioengineered to enable the slow release of H 2 O 2 , a reactive oxygen species to which H...
February 15, 2018: Journal of Clinical Pathology
https://www.readbyqxmd.com/read/29444761/chronic-infection-sustained-by-a-pseudomonas-aeruginosa-high-risk-clone-producing-the-vim-1-metallo-%C3%AE-lactamase-in-a-cystic-fibrosis-patient-after-lung-transplantation
#3
Simona Pollini, Claudia Mugnaioli, Daniela Dolce, Silvia Campana, Anna Silvia Neri, Giovanni Taccetti, Gian Maria Rossolini
BACKGROUND: The significance of chronic lung infection by multidrug-resistant (MDR) pathogens in Cystic Fibrosis (CF) transplanted patients remains controversial, and the available information is overall limited. Here we describe the case of a chronic infection, sustained by a metallo-β-lactamase (MBL)-producing P. aeruginosa strain, in a CF patient following lung transplantation. METHODS: Twelve P. aeruginosa isolates collected from a CF patient over a 15-years follow-up period after lung transplantation were analysed for their antibiotic susceptibility profile, MBL production and clonal relatedness...
February 12, 2018: Journal of Cystic Fibrosis: Official Journal of the European Cystic Fibrosis Society
https://www.readbyqxmd.com/read/29444760/risk-factors-for-persistent-aspergillus-respiratory-isolation-in-cystic-fibrosis
#4
Gina Hong, Kevin J Psoter, Mark T Jennings, Christian A Merlo, Michael P Boyle, Denis Hadjiliadis, Steven M Kawut, Noah Lechtzin
BACKGROUND: Aspergillus species are increasingly detected in the respiratory tracts of individuals with cystic fibrosis (CF), and chronic Aspergillus fumigatus is associated with more frequent hospitalizations for pulmonary exacerbations. However, patient and clinical factors that may contribute to the acquisition of persistent Aspergillus infection have yet to be identified. The objective of this study was to identify risk factors for development of Aspergillus respiratory isolation in CF...
February 12, 2018: Journal of Cystic Fibrosis: Official Journal of the European Cystic Fibrosis Society
https://www.readbyqxmd.com/read/29444656/implementation-of-a-successful-eradication-protocol-for-burkholderia-cepacia-complex-in-cystic-fibrosis-patients
#5
Bryan A Garcia, Jacque L Carden, Dana L Goodwin, Tim A Smith, Amit Gaggar, Kevin Leon, Veena B Antony, Steven M Rowe, George M Solomon
BACKGROUND: Infection with Burkholderia cepacia complex (Bcc) results in a heterogeneous clinical course ranging from asymptomatic colonization of the airways to fulminant respiratory failure in patients with cystic fibrosis (CF). Early eradication of Pseudomonas aeruginosa improves clinical outcomes. The efficacy and clinical outcomes following implementation of an eradication protocol for Bcc are less well understood. METHODS: We developed and implemented a single center Bcc eradication protocol that included an intensive combination of intravenous, inhaled, and oral antibiotic therapies based on in vitro sensitivities...
February 14, 2018: BMC Pulmonary Medicine
https://www.readbyqxmd.com/read/29417077/ciprofloxacin-use-in-hospitalized-children-approved-or-off-label
#6
Toktam Faghihi, Leila Yavari Tekmehdash, Mania Radfar, Kheirollah Gholami
Objective: Fluoroquinolones are not routinely used as the first-line antimicrobial therapy in pediatrics. The American Academy of Pediatrics (AAP) and the United States Food and Drug Administration (FDA) approved fluoroquinolones on certain indications in children. The aim of this study was to evaluate to what extent and how ciprofloxacin is used on approved indication or as off-label. Besides, dose adequacy and treatment duration were assessed. Methods: In a 10-month observational study, all children receiving systemic ciprofloxacin were assessed...
October 2017: Journal of Research in Pharmacy Practice
https://www.readbyqxmd.com/read/29412515/l-methionine-anti-biofilm-activity-against-pseudomonas-aeruginosa-is-enhanced-by-the-cystic-fibrosis-transmembrane-conductance-regulator-potentiator-ivacaftor
#7
Do-Yeon Cho, Dong-Jin Lim, Calvin Mackey, Christopher G Weeks, Jaime A Peña Garcia, Daniel Skinner, Jessica W Grayson, Harrison S Hill, David K Alexander, Shaoyan Zhang, Bradford A Woodworth
BACKGROUND: Biofilms may contribute to refractory chronic rhinosinusitis (CRS), as they lead to antibiotic resistance and failure of effective clinical treatment. l-Methionine is an amino acid with reported biofilm-inhibiting properties. Ivacaftor is a cystic fibrosis transmembrane conductance regulator (CFTR) potentiator with mild antimicrobial activity via inhibition of bacterial DNA gyrase and topoisomerase IV. The objective of this study was to evaluate whether co-treatment with ivacaftor and l-methionine can reduce the formation of Pseudomonas aeruginosa biofilms...
February 7, 2018: International Forum of Allergy & Rhinology
https://www.readbyqxmd.com/read/29411860/self-management-for-bronchiectasis
#8
REVIEW
Carol Kelly, Seamus Grundy, Dave Lynes, David Jw Evans, Sharada Gudur, Stephen J Milan, Sally Spencer
BACKGROUND: Bronchiectasis is a long term respiratory condition with an increasing rate of diagnosis. It is associated with persistent symptoms, repeated infective exacerbations, and reduced quality of life, imposing a burden on individuals and healthcare systems. The main aims of therapeutic management are to reduce exacerbations and improve quality of life. Self-management interventions are potentially important for empowering people with bronchiectasis to manage their condition more effectively and to seek care in a timely manner...
February 7, 2018: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29401362/diversification-of-pseudomonas-aeruginosa-within-the-cystic-fibrosis-lung-and-its-effects-on-antibiotic-resistance
#9
Shawn T Clark, David S Guttman, David M Hwang
The evolution and diversification of bacterial pathogens within human hosts represent potential barriers to the diagnosis and treatment of life-threatening infections. Tremendous genetic and phenotypic diversity is characteristic of host adaptation in strains of Pseudomonas aeruginosa that infect the airways of individuals with chronic lung diseases and prove to be extremely difficult to eradicate. In this MiniReview, we examine recent advances in understanding within-host diversity and antimicrobial resistance in P...
February 1, 2018: FEMS Microbiology Letters
https://www.readbyqxmd.com/read/29396026/the-effect-of-enteral-tube-feeding-in-cystic-fibrosis-a-registry-based-study
#10
Denis Libeert, Dimitri Declercq, Simeon Wanyama, Muriel Thomas, Sabine Van Daele, Frans De Baets, Stephanie Van Biervliet
BACKGROUND: Long-term effect of enteral tube feeding (ETF) in cystic fibrosis (CF) remains equivocal. METHODS: A Belgian CF registry based, retrospective, longitudinal study, evaluated the pre- and post- ETF (n = 113) clinical evolution and compared each patient with 2 age, gender, pancreatic status and genotype class-matched controls. RESULTS: At baseline ETF had a worse BMI z-score (p < 0.0001) and FEV1% (p < 0.0001) compared to controls...
January 21, 2018: Journal of Cystic Fibrosis: Official Journal of the European Cystic Fibrosis Society
https://www.readbyqxmd.com/read/29385901/opat-proof-of-concept-in-a-peripheral-belgian-hospital-after-review-of-the-literature
#11
Annick Smismans, Astrid Vantrappen, Freija Verbiest, Christophe Indevuyst, Bea Van den Poel, Sandrina von Winckelmann, Annelore Peeters, Sara Ombelet, Peter Lybeert, Andre Heremans, Eric Frans, Erwin Ho, Johan Frans
Since its introduction in the 1970s in the United States, outpatient parenteral antibiotic/antimicrobial therapy (OPAT) has been adopted internationally for long-term intravenous (IV) treatment of stable infectious diseases. The aim is to provide a safe and successful completion of IV antimicrobial treatment at the ambulatory care center or at home without complications and costs associated with hospitalization. OPAT implementation has been accelerated by progress in vascular access devices, newly available antibiotics, the emphasis on cost-savings, as well as an improved patient comfort and a reduced incidence of health care associated infections with a similar outcome...
January 31, 2018: Acta Clinica Belgica
https://www.readbyqxmd.com/read/29382099/in-silico-and-in-vitro-guided-identification-of-inhibitors-of-alkylquinolone-dependent-quorum-sensing-in-pseudomonas-aeruginosa
#12
Fadi Soukarieh, Eduard Vico Oton, Jean-Frédéric Dubern, Janice Gomes, Nigel Halliday, Maria de Pilar Crespo, Jonathan Ramírez-Prada, Braulio Insuasty, Rodrigo Abonia, Jairo Quiroga, Stephan Heeb, Paul Williams, Michael J Stocks, Miguel Cámara
Pseudomonas aeruginosa is a major opportunistic pathogen in cystic fibrosis, wound and nosocomial infections, posing a serious burden to public health, due to its antibiotic resistance. The P. aeruginosa Pseudomonas Quinolone System (pqs) quorum sensing system, driven by the activation of the transcriptional regulator, PqsR (MvfR) by alkylquinolone (AQ) signal molecules, is a key player in the regulation of virulence and a potential target for the development of novel antibacterial agents. In this study, we performed in silico docking analysis, coupled with screening using a P...
January 28, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29370836/successful-eradication-of-newly-acquired-mrsa-in-six-of-seven-patients-with-cystic-fibrosis-applying-a-short-term-local-and-systemic-antibiotic-scheme
#13
Alexander Kiefer, Christian Bogdan, Volker O Melichar
BACKGROUND: In individuals with cystic fibrosis (CF), colonization with methicillin-resistant Staphylococcus aureus (MRSA) was reported to be associated with a deterioration of pulmonary disease as reflected by an accelerated decline in lung function. Thus, an early eradication of MRSA could be beneficial in these patients. Here, we report on an intensified MRSA eradication protocol. METHODS: Since 2012 a protocol for the eradication of newly acquired MRSA has been used in our CF Clinic, combining oral rifampicin and fusidic acid, inhaled vancomycin, nasal mupirocin, local antiseptic treatment and hygienic directives all of which are applied for only 7 days during an inpatient hospital stay...
January 25, 2018: BMC Pulmonary Medicine
https://www.readbyqxmd.com/read/29368988/activities-of-dual-combinations-of-antibiotics-against-multidrug-resistant-nontuberculous-mycobacteria-recovered-from-patients-with-cystic-fibrosis
#14
Matthew Schwartz, Stefanie Fisher, Elizabeth Story-Roller, Gyanu Lamichhane, Nicole Parrish
Patients with cystic fibrosis (CF) are at risk for recurrent pulmonary infections due to increased viscosity of airway secretions, leading to persistent colonization with pathogenic bacteria, including nontuberculous mycobacteria (NTM). Extensive antibiotic use for treatment of infections has led to increasing antimicrobial resistance, which is a significant barrier to the treatment of NTMs. We examined the in vitro activity of several antibiotics against a selection of the most drug-resistant clinical isolates of Mycobacterium abscessus, Mycobacterium chelonae, and Mycobacterium avium complex recovered from CF patients at our institution, as well as paired combinations of antibiotics against a subset of M...
January 25, 2018: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/29359872/mycobacterium-abscessus-infections-in-lung-transplant-recipients-15-year-experience-from-a-single-institution
#15
Morsal Osmani, David Sotello, Salvador Alvarez, John A Odell, Matthew Thomas
PURPOSE: To evaluate our institutional experience with Mycobacterium abscessus infections occurring in lung transplant recipients (LTR). METHODS: We retrospectively reviewed our prospectively collected institutional adult lung transplant database from 2001 to 2015 to identify patients with M. abscessus or Mycobacterium chelonae/abscessus infection before or after transplantation. Untreated, colonized patients were excluded from the study. Electronic health records of 9 out of 516 lung recipients (1...
January 23, 2018: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/29359187/the-small-rna-ncs35-regulates-growth-in-burkholderia-cenocepacia-j2315
#16
Sanne Kiekens, Andrea Sass, Filip Van Nieuwerburgh, Dieter Deforce, Tom Coenye
Burkholderia cenocepacia J2315 is a member of the B. cepacia complex. It has a large genome with three replicons and one plasmid; 7,261 genes code for annotated proteins, while 113 code for functional RNAs. Small regulatory RNAs of B. cenocepacia have not yet been functionally characterized. We investigated a small regulatory RNA, designated ncS35, that was discovered by differential RNA sequencing. Its expression under various conditions was quantified, and a deletion mutant, ΔncS35, was constructed. Compared to planktonic growth in a rich medium, the expression of ncS35 was elevated when B...
January 2018: MSphere
https://www.readbyqxmd.com/read/29353310/nod-like-receptor-s-and-host-immune-responses-with-pseudomonas-aeruginosa-infection
#17
REVIEW
Alaa Alhazmi
INTRODUCTION: Molecular mechanisms underlying the interactions between Pseudomonas aeruginosa, the common opportunistic pathogen in cystic fibrosis individuals, and host induce a number of marked inflammatory responses and associate with complex therapeutic problems due to bacterial resistance to antibiotics in chronic stage of infection. METHODS: Pseudomonas aeruginosa is recognized by number of pattern recognition receptors (PRRs); NOD-like receptors (NLRs) are a class of PRRs, which can recognize a variety of endogenous and exogenous ligands, thereby playing a critical role in innate immunity...
January 20, 2018: Inflammation Research: Official Journal of the European Histamine Research Society ... [et Al.]
https://www.readbyqxmd.com/read/29349537/timing-of-spirometry-may-impact-hospital-length-of-stay-for-cystic-fibrosis-pulmonary-exacerbation
#18
Katelyn Krivchenia, Dmitry Tumin, Christopher J Nemastil, Joseph D Tobias, Don Hayes
PURPOSE: The optimal timing of spirometry during hospitalization for acute pulmonary exacerbation (PEx) in patients with cystic fibrosis (CF) is unclear. We retrospectively evaluated whether measuring spirometry earlier during hospitalization was associated with a shorter length of stay (LOS). METHODS: In this retrospective study, we analyzed data from the electronic medical record of CF patients 6 years of age and older admitted to a single center for acute PEx requiring IV antibiotic therapy between 2009 and 2016...
January 18, 2018: Lung
https://www.readbyqxmd.com/read/29346420/initial-acquisition-and-succession-of-the-cystic-fibrosis-lung-microbiome-is-associated-with-disease-progression-in-infants-and-preschool-children
#19
Marianne S Muhlebach, Bryan T Zorn, Charles R Esther, Joseph E Hatch, Conor P Murray, Lidija Turkovic, Sarath C Ranganathan, Richard C Boucher, Stephen M Stick, Matthew C Wolfgang
The cystic fibrosis (CF) lung microbiome has been studied in children and adults; however, little is known about its relationship to early disease progression. To better understand the relationship between the lung microbiome and early respiratory disease, we characterized the lower airways microbiome using bronchoalveolar lavage (BAL) samples obtained from clinically stable CF infants and preschoolers who underwent bronchoscopy and chest computed tomography (CT). Cross-sectional samples suggested a progression of the lower airways microbiome with age, beginning with relatively sterile airways in infancy...
January 2018: PLoS Pathogens
https://www.readbyqxmd.com/read/29343421/frequency-of-small-colony-variants-and-antimicrobial-susceptibility-of-methicillin-resistant-staphylococcus-aureus-in-cystic-fibrosis-patients
#20
Nuntra Suwantarat, Mayer Rubin, Latetia Bryan, Tsigereda Tekle, Michael P Boyle, Karen C Carroll, Mark T Jennings
BACKGROUND: Small-colony variants (SCVs) are a distinct phenotype of Staphylococcus aureus, known for their role in chronic, difficult to treat infections, including cystic fibrosis (CF) lung disease. The goal of this study was to characterize SCV MRSA infection in an adult and pediatric CF population and to identify antibiotic susceptibility patterns unique to SCV MRSA. METHODS: We recovered methicillin-resistant S. aureus (MRSA) from respiratory culture samples from CF patients at the Johns Hopkins Hospital during a 6month study period...
December 2, 2017: Diagnostic Microbiology and Infectious Disease
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