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Macrolide AND pneumonia

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https://www.readbyqxmd.com/read/28336384/predictors-for-individual-patient-antibiotic-treatment-effect-in-hospitalised-community-acquired-pneumonia-patients
#1
Antonella F Simonetti, Cornelis H van Werkhoven, Valentijn A Schweitzer, Diego Viasus, Jordi Carratalà, Douwe F Postma, Jan Jelrik Oosterheert, Marc J M Bonten
OBJECTIVE: Our objective was to identify clinical predictors of antibiotic treatment effects in non-ICU hospitalised CAP patients. METHODS: Post-hoc analysis of three prospective cohorts (from the Netherlands and Spain) of CAP adult patients admitted to a non-ICU having received either beta-lactam monotherapy (BL), beta-lactam + macrolide (BLM), or fluoroquinolone-based therapy (FQL) as empiric antibiotic treatment. We evaluated candidate clinical predictors of treatment effects in multiple mixed-effects models by including interactions of the predictors with empiric antibiotic choice and using 30-day mortality, ICU admission, and length of hospital stay (LOS) as outcomes...
March 20, 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/28318472/antimicrobial-resistance-penicillin-binding-protein-sequences-and-pilus-islet-carriage-in-relation-to-clonal-evolution-of-streptococcus-pneumoniae-serotype-19a-in-russia-2002-2013
#2
N Mayanskiy, T Savinova, N Alyabieva, O Ponomarenko, E Brzhozovskaya, A Lazareva, L Katosova, R Kozlov
Clonal changes of serotype 19A pneumococci have been appreciated in conjunction with growing prevalence of this serotype after implementation of the seven-valent pneumococcal conjugate vaccine (PCV7). In the present study, we characterized serotype 19A pneumococci collected in Russia within a decade preceding the implementation of PCV vaccination and described their clonal evolution. We retrospectively analyzed non-invasive serotype 19A isolates collected in 2002-2013. All isolates were subjected to multilocus sequence typing, antimicrobial susceptibility testing, determination of macrolide resistance genotype, molecular detection of pilus islet (PI) carriage, sequencing of penicillin-binding protein (PBP) genes...
March 20, 2017: Epidemiology and Infection
https://www.readbyqxmd.com/read/28302508/synthesis-of-clarithromycin-ketolides-chemically-modified-at-the-unreactive-c10-methyl-group
#3
Hany Fakhry Anwar, Mioara Andrei, Kjell Undheim
Chemoselective substitutions in the C10-methyl group of erythromycin A ketolides is reported. The C10-methyl group in the clarithromycin derived substrate 10,11-anhydro-O(6)-methyl-descladinosylerythromycin was activated by conversion into an allyl acetate and thereafter to the corresponding allylic cyanide. Both the allylic acetate and the cyanide reacted with carbonyldiimidazole and ammonia to afford a C11,C12-cyclic carbamate with concurrent elimination of the allylic function to yield a methylene α,β-unsaturated ketone...
February 23, 2017: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/28288170/therapeutic-efficacy-of-azithromycin-clarithromycin-minocycline-and-tosufloxacin-against-macrolide-resistant-and-macrolide-sensitive-mycoplasma-pneumoniae-pneumonia-in-pediatric-patients
#4
Nobuhisa Ishiguro, Naoko Koseki, Miki Kaiho, Tadashi Ariga, Hideaki Kikuta, Takehiro Togashi, Koji Oba, Keisuke Morita, Naoko Nagano, Masanori Nakanishi, Kazuya Hara, Kyosuke Hazama, Toru Watanabe, Tatsuru Yamanaka, Satoshi Sasaki, Hideto Furuyama, Mutsuo Shibata, Satoru Shida, Akihito Ishizaka, Yuichi Tabata, Hayato Aoyagi, Hiroyuki Naito, Mikio Yoshioka, Atsuko Horino, Tsuyoshi Kenri
OBJECTIVE: To clarify therapeutic effects of azithromycin, clarithromycin, minocycline and tosufloxacin against macrolide-resistant Mycoplasma pneumoniae (MRMP) pneumonia and against macrolide-sensitive Mycoplasma pneumoniae (MSMP) pneumonia in pediatric patients. METHODS: A prospective, multicenter observational study was conducted from July 2013 to August 2015. The therapeutic effects of azithromycin, clarithromycin, minocycline and tosufloxacin were evaluated in 59 patients with pneumonia caused by MRMP and in 50 patients with pneumonia caused by MSMP...
2017: PloS One
https://www.readbyqxmd.com/read/28270546/variability-in-antibiotic-prescribing-for-community-acquired-pneumonia
#5
Lori K Handy, Matthew Bryan, Jeffrey S Gerber, Theoklis Zaoutis, Kristen A Feemster
BACKGROUND AND OBJECTIVES: Published guidelines recommend amoxicillin for most children with community-acquired pneumonia (CAP), yet macrolides and broad-spectrum antibiotics are more commonly prescribed. We aimed to determine the patient and clinician characteristics associated with the prescription of amoxicillin versus macrolide or broad-spectrum antibiotics for CAP. METHODS: Retrospective cohort study in an outpatient pediatric primary care network from July 1, 2009 to June 30, 2013...
March 7, 2017: Pediatrics
https://www.readbyqxmd.com/read/28267637/levofloxacin-versus-azithromycin-for-treating-legionella-pneumonia-a-propensity-score-analysis
#6
Carolina Garcia-Vidal, Irene Sanchez-Rodriguez, Antonella Francesca Simonetti, Joaquín Burgos, Diego Viasus, Maria Teresa Martin, Vicenç Falco, Jordi Carratalà
OBJECTIVES: Concerns have arisen regarding the equivalence of levofloxacin and some macrolides for treating community-acquired legionella pneumonia (LP). We aimed to compare the outcomes of current patients with LP treated with levofloxacin, azithromycin and clarithromycin. METHODS: Observational retrospective multicenter study of consecutive patients with LP requiring hospitalization (2000-2014) conducted in two hospitals. The primary outcome assessed was 30-day mortality...
March 3, 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/28258107/non-antibiotic-macrolides-restore-airway-macrophage-phagocytic-function-with-potential-anti-inflammatory-effects-in-chronic-lung-diseases
#7
Sandra J Hodge, Hai Tran, Rhys Hamon, Eugene Roscioli, Greg Hodge, Hubertus Jersmann, Miranda Ween, Paul N Reynolds, Arthur Yeung, Jennifer Treiberg, Sibylle Wilbert
We reported defective efferocytosis associated with cigarette smoking and/or airway inflammation in chronic lung diseases including COPD, severe asthma and childhood bronchiectasis. We also showed defects in phagocytosis of non-typeable H. influenzae (NTHi), a common colonizer of the lower airway in these diseases. These defects could be substantially overcome with low-dose Azithromycin; however, chronic usage may induce bacterial resistance. We investigated two novel macrolides, GS-459755 (2'-desoxy-9-(S)-erythromycylamine) and GS-560660 (Azithromycin-based 2'-desoxy molecule) with significantly diminished antibiotic activity against S...
March 3, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28252438/-sensitivity-study-of-antimicrobial-pneumococci-in-central-kazakhstan
#8
I Belyaev, A Belyaev
To determine the epidemiological pattern of antibiotic resistance strains of S. Pneumoniae studied the sensitivity of nasopharyngeal isolates of pneumococci isolated from healthy children attending sports clubs Karaganda region. The frequency of allocation of pneumococci was 35.57%. In accordance with the values of the minimum inhibitory concentration resistant pneumococci was: penicillin - 5.41%, erythromycin - 8.1%, clindamycin - 4.05%, amoxicillin-6.76%, tetracycline 28.38%. Resistance to beta-lactam antibiotics in the studied children is not a significant problem...
January 2017: Georgian Medical News
https://www.readbyqxmd.com/read/28251179/fluorocycline-tp-271-is-potent-against-complicated-community-acquired-bacterial-pneumonia-pathogens
#9
Trudy H Grossman, Corey Fyfe, William O'Brien, Meredith Hackel, Mary Beth Minyard, Ken B Waites, Jacques Dubois, Timothy M Murphy, Andrew M Slee, William J Weiss, Joyce A Sutcliffe
TP-271 is a novel, fully synthetic fluorocycline antibiotic in clinical development for the treatment of respiratory infections caused by susceptible and multidrug-resistant pathogens. TP-271 was active in MIC assays against key community respiratory Gram-positive and Gram-negative pathogens, including Streptococcus pneumoniae (MIC90 = 0.03 µg/ml), methicillin-sensitive Staphylococcus aureus (MSSA; MIC90 = 0.25 µg/ml), methicillin-resistant S. aureus (MRSA; MIC90 = 0.12 µg/ml), Streptococcus pyogenes (MIC90 = 0...
January 2017: MSphere
https://www.readbyqxmd.com/read/28238211/effects-of-clarithromycin-azithromycin-and-rifampicin-on-terbutaline-induced-sweating-in-foals
#10
A L Stieler Stewart, L C Sanchez, M F Mallicote, A L Muniz, M S Westerterp, J A Burrow, R J MacKay
BACKGROUND: Erythromycin (ERY) induces anhidrosis in foals. Azithromycin (AZI) and clarithromycin (CLA), often combined with rifampicin (RIF), are commonly used to treat Rhodococcus equi infections, but effects on sweating have not been investigated. OBJECTIVE: To determine the effects of AZI, CLA and RIF on sweat responses in normal foals. STUDY DESIGN: Each experiment was a blinded, duplicated, 6-foal × 3-period counterbalanced within-subjects design (12 foals/experiment)...
February 26, 2017: Equine Veterinary Journal
https://www.readbyqxmd.com/read/28215918/molecular-detection-of-genes-responsible-for-macrolide-resistance-among-streptococcus-pneumoniae-isolated-in-north-lebanon
#11
Salam El Ashkar, Marwan Osman, Rayane Rafei, Hassan Mallat, Marcel Achkar, Fouad Dabboussi, Monzer Hamze
In recent years, the increased use of macrolides was linked with the emergence of resistance Streptococcus pneumoniae worldwide. The main aim of this study was to determine the prevalence of S. pneumoniae resistant to macrolides and to identify the macrolide resistance genotypes among clinical isolates collected in North Lebanon. Disk diffusion susceptibility method was performed for 132 strains of S. pneumoniae isolated over a period of 5 years in North Lebanon. Polymerase Chain Reaction followed by pyrosequencing was carried out for confirmation of phenotypic diagnosis...
February 16, 2017: Journal of Infection and Public Health
https://www.readbyqxmd.com/read/28166162/increasing-role-of-macrolide-anti-inflammatory-therapy-in-secondary-organizing-pneumonia
#12
Arjan S Flora, Hermann Simo, Ragheb Assaly
No abstract text is available yet for this article.
January 26, 2017: American Journal of Therapeutics
https://www.readbyqxmd.com/read/28164610/an-investigation-of-the-frequency-of-upper-respiratory-tract-infection-pathogens-and-their-antibiotic-patterns-in-tonsils-and-adenoids-of-adenotonsillectomy-patients
#13
Yasar Nakipoglu, Gulsen Gunel, Deniz Kanliada, Levent Aydemir, Nezahat Gurler, Bulent Gurler
BACKGROUND: We aimed to investigate the potentially pathogenic bacteria of upper respiratory tract infections (URTIs) and their susceptibilities to different antibiotics. METHODS: Two-hundred adenoid and tonsil specimens from 100 patients who had undergone adenotonsillectomy were obtained and analyzed bacteriologically. Identification of the pathogens was made by conventional or commercial identification systems and antibiotic susceptibility tests were carried out by disk diffusion method...
August 1, 2016: Clinical Laboratory
https://www.readbyqxmd.com/read/28161038/treatment-of-infections-caused-by-rhodococcus-equi
#14
REVIEW
Steeve Giguère
Pneumonia caused by Rhodococcus equi remains an important cause of disease and death in foals. The combination of a macrolide (erythromycin, azithromycin, or clarithromycin) with rifampin remains the recommended therapy for foals with clinical signs of infection caused by R equi. Most foals with small, subclinical ultrasonographic pulmonary lesions associated with R equi recover without therapy, and administration of antimicrobial agents to these subclinically affected foals does not hasten lesion resolution relative to administration of a placebo...
February 1, 2017: Veterinary Clinics of North America. Equine Practice
https://www.readbyqxmd.com/read/28148730/a-multicenter-collaborative-to-improve-care-of-community-acquired-pneumonia-in-hospitalized-children
#15
Kavita Parikh, Eric Biondi, Joanne Nazif, Faiza Wasif, Derek J Williams, Elizabeth Nichols, Shawn Ralston
BACKGROUND AND OBJECTIVES: The Value in Inpatient Pediatrics Network sponsored the Improving Care in Community Acquired Pneumonia collaborative with the goal of increasing evidence-based management of children hospitalized with community acquired pneumonia (CAP). Project aims included: increasing use of narrow-spectrum antibiotics, decreasing use of macrolides, and decreasing concurrent treatment of pneumonia and asthma. METHODS: Data were collected through chart review across emergency department (ED), inpatient, and discharge settings...
March 2017: Pediatrics
https://www.readbyqxmd.com/read/28132873/detection-of-macrolide-resistance-genes-in-culture-negative-specimens-from-bangladeshi-children-with-invasive-pneumococcal-diseases
#16
Md Hasanuzzaman, Roly Malaker, Maksuda Islam, Abdullah H Baqui, Gary L Darmstadt, Cynthia G Whitney, Samir K Saha
OBJECTIVES: In recent years, an increasing prevalence of macrolide resistance among pneumococci in Bangladesh has been observed. However, the scenario remains incomplete, as few isolates (<1%) are available from pneumonia cases and most pneumococcal meningitis cases (>80%) are culture-negative. This study optimised a triplex PCR method to detect macrolide resistance genes (MRGs) (mefA and ermB) and cpsA from culture-negative pneumococcal cases to predict the prevalence and level of macrolide resistance...
January 26, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/28108677/in-vitro-susceptibility-to-19-agents-other-than-%C3%AE-lactams-among-third-generation-cephalosporin-resistant-enterobacteriaceae-recovered-on-hospital-admission
#17
A Mischnik, P Baumert, A Hamprecht, A M Rohde, S Peter, S Feihl, J Knobloch, H Gölz, A Kola, B Obermann, C Querbach, M Willmann, F Gebhardt, E Tacconelli, P Gastmeier, H Seifert, W V Kern
OBJECTIVES: As part of the multicentre Antibiotic Therapy Optimisation Study, MIC values of 19 non-β-lactam agents were determined for third-generation cephalosporin-resistant Escherichia coli, Klebsiella species and Enterobacter species (3GCREB) isolates collected in German hospitals. METHODS: A total of 328 E. coli, 35 Klebsiella spp. (1 Klebsiella oxytoca and 34 Klebsiella pneumoniae) and 16 Enterobacter spp. (1 Enterobacter aerogenes and 15 Enterobacter cloacae) isolates were submitted to broth microdilution antimicrobial susceptibility testing with the MICRONAUT system...
January 19, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28107399/changes-in-molecular-characteristics-of-mycoplasma-pneumoniae-in-clinical-specimens-from-children-in-beijing-between-2003-and-2015
#18
Hongmei Sun, Guanhua Xue, Chao Yan, Shaoli Li, Hanqing Zhao, Yanling Feng, Liqiong Wang
The molecular characteristics of 480 Mycoplasma pneumoniae polymerase chain reaction-positive specimens (331 were previously reported and 149 were newly reported) collected from pediatric patients in Beijing, China, between 2003 and 2015 were analyzed. Genotype M4-5-7-2/P1 were the most prevalent across the 13-year study period, although the isolation and mutation rates for this genotype varied between the periods 2003-2007, 2008-2013, and 2014-2015. In addition, there was a close association between the M4-5-7-2 genotype and macrolide resistance...
2017: PloS One
https://www.readbyqxmd.com/read/28103180/fluoroquinolone-macrolide-and-ketolide-resistance-in-haemophilus-parainfluenzae-from-south-africa
#19
Regina Esinam Abotsi, Usha Govinden, Krishnee Moodley, Sabiha Essack
Fluoroquinolones and ketolides are among the drugs of choice for the treatment of Haemophilus parainfluenzae infections. There has been a report of an emerging fluoroquinolone and telithromycin resistance in H. parainfluenzae isolates from the private sector of KwaZulu-Natal Province of South Africa that necessitates molecular investigation. The aim of this study is to characterize these resistance delineating mutations in genes commonly associated with reduced susceptibility. Ten H. parainfluenzae isolates retrieved from the sputum of 10 patients with H...
January 19, 2017: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/28074049/in-vitro-antibacterial-activity-of-%C3%AE-methoxyimino-acylide-derivatives-against-macrolide-resistant-pathogens-and-mutation-analysis-in-23s-rrna
#20
Hiroyuki Sugiyama, Ippei Yoshida, Mayumi Ueki, Katsuhiko Tanabe, Akira Manaka, Keiichi Hiramatsu
We characterized in vitro activities of α-methoxyimino acylides against macrolide-resistant clinical isolates of Streptococcus pneumoniae, Streptococcus pyogenes and Mycoplasma pneumoniae with ribosome modification or substitution and selected acylide-resistant mutants to clarify the binding point of the acylides. The acylides had low MICs against erm(B) gene-containing S. pneumoniae and S. pyogenes (MIC90s, 1-4 μg ml(-1)). For M. pneumoniae, although they had poor potencies against macrolide-resistant strains with the A2058G (Escherichia coli numbering) mutation in 23S rRNA (MICs, >32 μg ml(-1)), one of them showed in vitro activities against macrolide-resistant strains with the A2058U or A2059G mutations (MICs, 0...
March 2017: Journal of Antibiotics
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