keyword
MENU ▼
Read by QxMD icon Read
search

Macrolide

keyword
https://www.readbyqxmd.com/read/28533235/the-tet39-determinant-and-the-msre-mphe-genes-in-acinetobacter-plasmids-are-each-part-of-discrete-modules-flanked-by-inversely-oriented-pdif-xerc-xerd-sites
#1
Grace A Blackwell, Ruth M Hall
The tet39 tetracycline resistance determinant and the macrolide resistance genes msrE and mphE were found in an 18.2 kb plasmid, pS30-1, recovered from a GC2 Acinetobacter baumannii isolate from Singapore, that conferred resistance to tetracycline and erythromycin. pS30-1 also contains mobA and mobC genes encoding MOBQ family proteins but attempts to mobilise pS30-1 utilising a co-resident conjugative repAci6 plasmid were unsuccessful. Eight pdif sites, consisting of inversely-oriented binding sites for the XerC and XerD recombinases separated by 6 bp, were detected in pS30-1...
May 22, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28530085/-long-term-treatment-with-macrolides-in-chronic-lung-diseases
#2
REVIEW
Michal Shteinberg, Sonia Schneer, Ophir Lavon, Yochai Adir
Macrolide agents have both antibacterial properties as well as various effects on the inflammatory system. In recent years there is growing evidence regarding the favourable effects of macrolides in a range of chronic respiratory conditions. Historically, erythromycin and clarithromycin were found to stabilize pulmonary deterioration in diffuse panbronchiolitis. In cystic fibrosis patients colonized with pseudomonas aeruginosa, long term treatment with azithromycin reduces exacerbations and presents improved lung function...
September 2016: Harefuah
https://www.readbyqxmd.com/read/28528545/discovery-and-biosynthesis-of-gladiolin-a-burkholderia-gladioli-antibiotic-with-promising-activity-against-mycobacterium-tuberculosis
#3
Lijiang Song, Matthew Jenner, Joleen Masschelein, Cerith Jones, Matthew J Bull, Simon R Harris, Ruben C Hartkoorn, Anthony Vocat, Isolda Romero-Canelón, Paul Coupland, Gordon Webster, Matthew Dunn, Rebecca Weiser, Christopher Paisey, Stewart T Cole, Julian Parkhill, Eshwar Mahenthiralingam, Gregory L Challis
An antimicrobial activity screen of Burkholderia gladioli BCC0238, a clinical isolate from a cystic fibrosis patient, led to the discovery of gladiolin, a novel macrolide antibiotic with potent activity against Mycobacterium tuberculosis H37Rv. Gladiolin is structurally-related to etnangien, a highly unstable antibiotic from Sorangium cellulosum that is also active against Mycobacteria. Like etnangien, gladiolin was found to inhibit RNA polymerase, a validated drug target in M. tuberculosis. However, gladiolin lacks the highly labile hexaene moiety of etnangien and was thus found to possess significantly increased chemical stability...
May 22, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28528362/budesonide-fluticasone-propionate-and-azithromycin-do-not-modulate-the-membrane-vesicle-release-by-thp-1-macrophages-and-respiratory-pathogens-during-macrophage-infection
#4
Charlotte Volgers, Gert E Grauls, Pauline H M Hellebrand, Paul H M Savelkoul, Frank R M Stassen
Patients with more severe chronic obstructive pulmonary disease frequently experience exacerbations and it is estimated that up to 50% of these exacerbations are associated with bacterial infections. The mainstay treatment for these infection-related exacerbations constitutes the administration of glucocorticoids, alone or in combination with antibiotics. A recent line of evidence demonstrates that many hormones including the steroid beclomethasone can also directly affect bacterial growth, virulence, and antibiotic resistance...
May 20, 2017: Inflammopharmacology
https://www.readbyqxmd.com/read/28526836/characterisation-of-antibiotic-prescriptions-for-acute-respiratory-tract-infections-in-danish-general-practice-a-retrospective-registry-based-cohort-study
#5
Rune Aabenhus, Malene Plejdrup Hansen, Laura Trolle Saust, Lars Bjerrum
Inappropriate use of antibiotics is contributing to the increasing rates of antimicrobial resistance. Several Danish guidelines on antibiotic prescribing for acute respiratory tract infections in general practice have been issued to promote rational prescribing of antibiotics, however it is unclear if these recommendations are followed. We aimed to characterise the pattern of antibiotic prescriptions for patients diagnosed with acute respiratory tract infections, by means of electronic prescriptions, labeled with clinical indications, from Danish general practice...
May 19, 2017: NPJ Primary Care Respiratory Medicine
https://www.readbyqxmd.com/read/28526802/macrolide-resistance-in-pseudomonas-aeruginosa-implications-for-practice
#6
EDITORIAL
James D Chalmers
No abstract text is available yet for this article.
May 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28526799/acquired-resistance-to-macrolides-in-pseudomonas-aeruginosa-from-cystic-fibrosis-patients
#7
Muhammad-Hariri Mustafa, Shaunak Khandekar, Michael M Tunney, J Stuart Elborn, Barbara C Kahl, Olivier Denis, Patrick Plésiat, Hamidou Traore, Paul M Tulkens, Francis Vanderbist, Françoise Van Bambeke
Cystic fibrosis (CF) patients receive chronic treatment with macrolides for their antivirulence and anti-inflammatory properties. We, however, previously showed that Pseudomonas aeruginosa, considered as naturally resistant to macrolides, becomes susceptible when tested in a eukaryotic medium rather than a conventional broth.We therefore looked for specific macrolide resistance determinants in 333 CF isolates from four European CF centres in comparison with 48 isolates from patients suffering from hospital-acquired pneumonia (HAP)...
May 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28526018/infection-mediated-asthma-etiology-mechanisms-and-treatment-options-with-focus-on-chlamydia-pneumoniae-and-macrolides
#8
REVIEW
Wilmore C Webley, David L Hahn
Asthma is a chronic respiratory disease characterized by reversible airway obstruction and airway hyperresponsiveness to non-specific bronchoconstriction agonists as the primary underlying pathophysiology. The worldwide incidence of asthma has increased dramatically in the last 40 years. According to World Health Organization (WHO) estimates, over 300 million children and adults worldwide currently suffer from this incurable disease and 255,000 die from the disease each year. It is now well accepted that asthma is a heterogeneous syndrome and many clinical subtypes have been described...
May 19, 2017: Respiratory Research
https://www.readbyqxmd.com/read/28525276/chemoenzymatic-total-synthesis-and-structural-diversification-of-tylactone-based-macrolide-antibiotics-through-late-stage-polyketide-assembly-tailoring-and-c-h-functionalization
#9
Andrew N Lowell, Matthew D DeMars, Samuel T Slocum, Fengan Yu, Krithika Anand, Joseph A Chemler, Nisha Korakavi, Jennifer K Priessnitz, Sung Ryeol Park, Aaron A Koch, Pamela J Schultz, David H Sherman
Polyketide synthases (PKSs) represent a powerful catalytic platform capable of effecting multiple carbon-carbon bond forming reactions and oxidation state adjustments. We explored the functionality of two terminal PKS modules that produce the 16-membered tylosin macrocycle, using them as biocatalysts in the chemoenzymatic synthesis of tylactone and its subsequent elaboration to complete the first total synthesis of the juvenimicin, M-4365, and rosamicin classes of macrolide antibiotics via late-stage diversification...
May 19, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28522316/mycobacteriological-characteristics-and-treatment-outcomes-in-extrapulmonary-mycobacterium-abscessus-complex-infection
#10
Suk Hyeon Jeong, Su-Young Kim, Hee Jae Huh, Chang-Seok Ki, Nam Yong Lee, Cheol-In Kang, Doo Ryeon Chung, Kyong Ran Peck, Sung Jae Shin, Won-Jung Koh
OBJECTIVES: Differentiation between Mycobacterium abscessus and M. massiliense and determination of the presence of inducible resistance to macrolide antibiotics are important factors in the management of patients with M. abscessus complex (MABC) infection. Unlike pulmonary MABC infection, little information on extrapulmonary MABC infection is available. METHODS: We performed molecular identification of clinical isolates and assessed the clinical characteristics and treatment outcomes of 20 consecutive patients with extrapulmonary MABC infections...
May 15, 2017: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/28516842/serotype-distribution-antimicrobial-resistance-and-prevalence-of-pilus-islets-in-pneumococci-following-the-use-of-conjugate-vaccines
#11
Mitsuyo Kawaguchiya, Noriko Urushibara, Meiji Soe Aung, Masaaki Shinagawa, Satoshi Takahashi, Nobumichi Kobayashi
PURPOSE: In Japan, the 7-valent pneumococcal vaccine (PCV7) was introduced in 2010 and, in 2013, the PCV7 was replaced with the 13-valent pneumococcal vaccine (PCV13). This study was conducted to investigate serotypes, antimicrobial resistance and prevalence of pilus islets in pneumococcal isolates from inpatients in a Japanese tertiary hospital. METHODOLOGY: From April 2011 to February 2016, 151 isolates [95 (18 children, 77 adults) and 56 (19 children, 37 adults) in the PCV7 and PCV13 periods, respectively] were collected...
May 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28513757/-new-drugs-for-horses-and-production-animals-in-2016
#12
Ilka Ute Emmerich
In 2016, only one newly developed active pharmaceutical ingredient for horses and food-producing animals was released on the German market for veterinary drug products. The immunomodulator Pegbovigrastim is now available as an injection solution for cattle (Imrestor(®)). Four established veterinary active pharmaceutical ingredients are available for further species: the ectoparasitic Amitraz (Apitraz(®)) from the triazapentadiene group was additionally authorized for honeybees, the expectorant Bromhexine (Exflow(®) Vet) for chickens, turkeys and ducks and the macrolide antibiotic Gamithromycin (Zactran(®)) for pigs...
May 17, 2017: Tierärztliche Praxis. Ausgabe G, Grosstiere/Nutztiere
https://www.readbyqxmd.com/read/28512635/drug-susceptibility-of-33-reference-strains-of-slowly-growing-mycobacteria-to-19-antimicrobial-agents
#13
Hui Pang, Yi Jiang, Kanglin Wan
Objectives. Slowly growing mycobacteria (SGM) are prevalent worldwide and cause an extensive spectrum of diseases. Methods. In this study, the antimicrobial susceptibility of 33 reference strains of SGM to 19 antimicrobial agents was tested using a modified microdilution method. Results. Cefmetazole (32/33) and azithromycin (32/33) exhibited the highest antimicrobial activity, and dapsone (9/33) exhibited the lowest activity against the tested strains. Cefoxitin (30/33), cefoperazone (28/33), and cefepime (28/33) were effective against a high proportion of strains, and macrolides were also highly effective as well as offering the benefit of convenient oral administration to patients...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28511165/susceptibility-of-streptococcus-pneumoniae-to-fluoroquinolones-and-macrolides-in-upper-respiratory-tract-infections
#14
Yaroslav O Mykhalko, Tetyana V Duhovych, Pavlo P Kish
INTRODUCTION: Streptococcal species are known as the most common cause of bacterial upper respiratory tract infections (URTI). Once bacterial infection is diagnosed it demands empirical antibiotic prescription. On the other hand antimicrobial resistance is a global burden in today's medicine. For that reason, knowing of antimicrobial susceptibility patterns in population is an important background for successful treatment of bacterial caused URTI. The aim of this study was to analyze S...
2017: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/28511040/removal-of-selected-ppcps-edcs-and-antibiotic-resistance-genes-in-landfill-leachate-by-a-full-scale-constructed-wetlands-system
#15
Xinzhu Yi, Ngoc Han Tran, Tingru Yin, Yiliang He, Karina Yew-Hoong Gin
Landfill leachate could be a significant source of emerging contaminants (ECs) and antibiotic resistance genes (ARGs) into the environment. This study provides the first information on the occurrence of selected ECs and ARGs in raw leachate from 16-year old closed landfill site in Singapore. Among the investigated ECs, acetaminophen (ACT), bisphenol A (BPA), clofibric acid (CA), caffeine (CF), crotamiton (CTMT), diclofenac (DCF), N,N-diethyl-m-toluamide (DEET), gemfibrozil (GFZ), lincomycin (LIN), salicylic acid (SA), and sulfamethazine (SMZ) were the most frequently detected compounds in raw landfill leachate...
May 8, 2017: Water Research
https://www.readbyqxmd.com/read/28504888/cytotoxic-bagremycins-from-mangrove-derived-streptomyces-sp-q22
#16
Lei Chen, Weiyun Chai, Wenling Wang, Tengfei Song, Xiao-Yuan Lian, Zhizhen Zhang
New bagremycins C-E (3-5) and bagrelactone A (6), together with known bagremycins A (1) and B (2), 4-hydroxystyrene (7), and 4-hydroxystyrene 4-O-α-d-galactopyranoside (8), were isolated from a mangrove-derived actinomycete, Streptomyces sp. Q22. Structures of these new compounds were elucidated based on their NMR and HRESIMS spectroscopic data as well as chemical degradation. Bagremycin C (3) is a unique analogue with an N-acetyl-(S)-cysteine moiety, while bagrelactone A (6) represents the first example of this type of bagremycin-derived macrolide...
May 15, 2017: Journal of Natural Products
https://www.readbyqxmd.com/read/28504659/structure-of-the-macab-tolc-abc-type-tripartite-multidrug-efflux-pump
#17
Anthony W P Fitzpatrick, Salomé Llabrés, Arthur Neuberger, James N Blaza, Xiao-Chen Bai, Ui Okada, Satoshi Murakami, Hendrik W van Veen, Ulrich Zachariae, Sjors H W Scheres, Ben F Luisi, Dijun Du
The MacA-MacB-TolC assembly of Escherichia coli is a transmembrane machine that spans the cell envelope and actively extrudes substrates, including macrolide antibiotics and polypeptide virulence factors. These transport processes are energized by the ATPase MacB, a member of the ATP-binding cassette (ABC) superfamily. We present an electron cryo-microscopy structure of the ABC-type tripartite assembly at near-atomic resolution. A hexamer of the periplasmic protein MacA bridges between a TolC trimer in the outer membrane and a MacB dimer in the inner membrane, generating a quaternary structure with a central channel for substrate translocation...
May 15, 2017: Nature Microbiology
https://www.readbyqxmd.com/read/28504455/mycoplasma-bovis-isolates-from-dairy-calves-in-japan-have-reduced-susceptibility-to-all-approved-macrolides-resulting-from-a-point-mutation-g748a-combined-with-multiple-species-specific-nucleotide-alterations-in-23s-rrna
#18
Toyotaka Sato, Hidetoshi Higuchi, Shin-Ichi Yokota, Yutaka Tamura
Erythromycin, tylosin, and tilmicosin are approved for use in cattle in Japan, and later two are used for treatment of Mycoplasma bovis infection. In this study, 58 M. bovis isolates obtained from Japanese dairy calves all exhibited reduced susceptibility to these macrolides. The widespread reduced susceptibility to the macrolides resulted from a few dominant lineages. All 58 isolates contained the G748A variant in both the rrl3 and rrl4 alleles of 23S rRNA, whereas a reference strain (PG45) did not. G748 localizes in the central loop of domain II (from C744 to A753) of 23S rRNA that participates in binding to mycinose, a sugar residue present in both tylosin and tilmicosin...
May 15, 2017: Microbiology and Immunology
https://www.readbyqxmd.com/read/28502195/increase-of-resistance-to-fluoroquinolone-and-retained-susceptibility-to-macrolides-of-campylobacter-isolates-in-croatia
#19
Paula Šupraha, Mirjana Balen Topić
No abstract text is available yet for this article.
May 13, 2017: Infectious Diseases
https://www.readbyqxmd.com/read/28499290/molecular-typing-of-syphilis-causing-strains-among-human-immunodeficiency-virus-positive-patients-in-antwerp-belgium
#20
Lenka Mikalová, Linda Grillová, Kara Osbak, Michal Strouhal, Chris Kenyon, Tania Crucitti, David Šmajs
Centers for Disease Control and Prevention and sequencing-based treponeme typing was used to analyze 72 blood samples, collected from human immunodeficiency virus and syphilis co-infected patients during 2014 to 2015 in Antwerp, Belgium. Twenty-nine (40.3%) isolates were polymerase chain reaction positive for Treponema pallidum, and all tested were macrolide-resistant. Four genotypes were identified by sequencing-based typing including two new genotypes, U4NR8 and SU9R8, whereas enhanced Centers for Disease Control and Prevention typing revealed 7 subtypes...
June 2017: Sexually Transmitted Diseases
keyword
keyword
12868
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"