keyword
MENU ▼
Read by QxMD icon Read
search

Aminoglycoside

keyword
https://www.readbyqxmd.com/read/29036479/a-structural-basis-for-the-antibiotic-resistance-conferred-by-an-n1-methylation-of-a1408-in-16s-rrna
#1
Hiroki Kanazawa, Fumika Baba, Mai Koganei, Jiro Kondo
The aminoglycoside resistance conferred by an N1-methylation of A1408 in 16S rRNA by a novel plasmid-mediated methyltransferase NpmA can be a future health threat. In the present study, we have determined crystal structures of the bacterial ribosomal decoding A site with an A1408m1A antibiotic-resistance mutation both in the presence and absence of aminoglycosides. G418 and paromomycin both possessing a 6'-OH group specifically bind to the mutant A site and disturb its function as a molecular switch in the decoding process...
October 3, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/29035735/transcriptome-profiling-identifies-genes-pathways-associated-with-experimental-resistance-to-paromomycin-in-leishmania-donovani
#2
Aditya Verma, Vasundhra Bhandari, Deepak Kumar Deep, Shyam Sundar, Jean Claude Dujardin, Ruchi Singh, Poonam Salotra
Widespread resistance towards antimony and reports of relapses following miltefosine treatment has severely affected the management of visceral leishmaniasis (VL) in the Indian subcontinent. Paromomycin (PMM), an aminoglycoside antibiotic, has been licensed for VL treatment in India in 2007. Although its use is still restricted in the field, unraveling the molecular mechanism of resistance towards PMM is the key to preserve the drug. In this study, PMM resistant lines were selected up to 100 μM of PMM in three distinct field isolates of Leishmania donovani at promastigote stage...
October 10, 2017: International Journal for Parasitology, Drugs and Drug Resistance
https://www.readbyqxmd.com/read/29034431/cultivation-dependent-and-high-throughput-sequencing-approaches-studying-the-co-occurrence-of-antibiotic-resistance-genes-in-municipal-sewage-system
#3
An-Dong Li, Liping Ma, Xiao-Tao Jiang, Tong Zhang
During the past years, antibiotic-resistant bacteria (ARB) leading for the spreading of antibiotic resistance genes (ARGs) became a global problem, especially multidrug-resistant (MDR) bacteria are considered the prime culprit of antibiotic resistance. However, the correlation between the antibiotic-resistant phenotype and the ARG profiles remains poorly understood. In the present study, metagenomic functional screening and metagenomic analysis of coliforms were combined to explore the phenotype and genotype of the ARBs from municipal sewage...
October 15, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/29034106/epidemiology-and-antibiotic-resistance-phenotypes-of-diarrheagenic-escherichia-coli-responsible-for-infantile-gastroenteritis-in-ouagadougou-burkina-faso
#4
Ali Konaté, René Dembélé, Nathalie K Guessennd, Fernique Konan Kouadio, Innocent Kouamé Kouadio, Mohamed Baguy Ouattara, Wendpoulomdé A D Kaboré, Assèta Kagambèga, Haoua Cissé, Hadiza Bawa Ibrahim, Touwendsida Serge Bagré, Alfred S Traoré, Nicolas Barro
The emergence and persistence of multidrug-resistant (MDR) diarrheagenic Escherichia coli (DEC) causing acute diarrhea is a major public health challenge in developing countries. The aim of this study was to evaluate the resistance phenotypes of DEC isolated from stool samples collected from children less than 5 years of age with acute diarrhea living in Ouagadougou/Burkina Faso. From August 2013 to October 2015, this study was carried out on 31 DEC strains of our study conducted in "Centre Médical avec Antenne Chirurgicale (CMA)" Paul VI and CMA of Schiphra...
September 2017: European Journal of Microbiology & Immunology
https://www.readbyqxmd.com/read/29033791/protein-synthesis-inhibition-and-activation-of-the-c-jun-n-terminal-kinase-are-potential-contributors-to-cisplatin-ototoxicity
#5
Brian D Nicholas, Shimon Francis, Elizabeth L Wagner, Sibo Zhang, Jung-Bum Shin
Cisplatin has been regarded as an effective and versatile chemotherapeutic agent for nearly 40 years. Though the associated dose-dependent ototoxicity is known, the cellular mechanisms by which cochleovestibular hair cell death occur are not well understood. We have previously shown that aminoglycoside ototoxicity is mediated in part by cytosolic protein synthesis inhibition. Despite a lack of molecular similarity, aminoglycosides were shown to elicit similar stress pathways to cisplatin. We therefore reasoned that there may be some role of protein synthesis inhibition in cisplatin ototoxicity...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/29032652/molecular-characterization-of-salmonella-genomic-island-1-in-proteus-mirabilis-isolates-from-chungcheong-provinces-korea
#6
Ji Youn Sung, Semi Kim, GyeCheol Kwon, Sun Hoe Koo
Emergence and dissemination of Salmonella genomic island 1 (SGI1) is strongly associated with occurrence of multidrug resistant (MDR) Enterobacteria in humans and animals. Diverse SGI1s have been reported among Salmonella enterica and Proteus mirabilis in several countries. We aimed to characterize SGI1 in P. mirabilis isolates from humans and chickens at ChungCheong provinces, Korea. A total of 44 P. mirabilis isolates were recovered from humans (n=20) and chickens (n=24). Antimicrobial susceptibility was determined by disk diffusion method...
October 14, 2017: Journal of Microbiology and Biotechnology
https://www.readbyqxmd.com/read/29030311/potential-transmission-opportunity-of-ctx-m-producing-escherichia-coli-in-large-scale-chicken-farm-in-vietnam
#7
Ngan Bui Thi Kim, Huong Bui Thi Mai, Shuhei Ueda, Tuyen Le Danh, Yoshimasa Yamamoto, Itaru Hirai
OBJECTIVES: Extended spectrum β-lactamase (ESBL)-producing Escherichia coli has been spread out worldwide. We investigated blaCTX-M-positive E. coli in a Vietnamese large-size chicken farm, and evaluated whether there was any different prevalence and molecular characters of blaCTX-M-positive E. coli between the large size chicken farm and a Vietnamese community. METHODS: Fecal samples were collected from 24 human individuals and 38 chickens of a large-scale chicken farm, and from 51 human and 36 chickens of a community...
October 10, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/29028569/occurrence-of-transferable-antibiotic-resistances-in-commercialized-ready-to-eat-mealworms-tenebrio-molitor-l
#8
Andrea Osimani, Federica Cardinali, Lucia Aquilanti, Cristiana Garofalo, Andrea Roncolini, Vesna Milanović, Marina Pasquini, Stefano Tavoletti, Francesca Clementi
The present study aimed to assess the occurrence of transferable determinants conferring resistance to tetracyclines, macrolide-lincosamide-streptogramin B, vancomycin, beta-lactams, and aminoglycosides in 40 samples of commercialized edible mealworms (Tenebrio molitor L.) purchased from European Union (EU) and non-EU producers. A high prevalence of tet(K) was observed in all of the samples assayed, with percentages of PCR-based positivity that ranged from 80% (samples from Thailand) to 100% (samples from the Netherlands, Belgium and France)...
October 5, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/29028006/polymorphism-of-antibiotic-inactivating-enzyme-driven-by-ecology-expands-the-environmental-resistome
#9
Dae-Wi Kim, Cung Nawl Thawng, Jung-Hye Choi, Kihyun Lee, Chang-Jun Cha
The environmental resistome has been recognized as the origin and reservoir of antibiotic resistance genes and considered to be dynamic and ever expanding. In this study, a targeted gene sequencing approach revealed that the polymorphic diversity of the aminoglycoside-inactivating enzyme AAC(6')-Ib was ecological niche-specific. AAC(6')-Ib-cr, previously known as a clinical variant, was prevalent in various soils and the intestines of chickens and humans, suggesting that this variant might not have arisen from adaptive mutations in the clinic but instead originated from the environment...
October 13, 2017: ISME Journal
https://www.readbyqxmd.com/read/29027446/-interactions-of-aminoglycosides-with-rnas-and-proteins-via-carbohydrate-microarray
#10
Xueyu Wang, Xiaoli Wang, Beilei Zhang, Jing Hu, Jian Yin
Aminoglycosides are broad-spectrum antibacterials to treat bacterial infections, especially gram-negative bacteria infections. However, aminoglycosides are losing efficacy because of the increase in antibiotic resistance and their inherent toxicity, attracting more interests in developing new aminoglycosides. Several clinically used aminoglycosides are mainly exerted by inhibition of protein synthesis through binding to bacterial rRNA. The bacterial ribosome RNA is the most currently exploited RNA drug target...
October 25, 2016: Sheng Wu Gong Cheng Xue Bao, Chinese Journal of Biotechnology
https://www.readbyqxmd.com/read/29021722/bacterial-and-antimicrobial-susceptibility-profile-and-the-prevalence-of-sepsis-among-burn-patients-at-the-burn-unit-of-cipto-mangunkusumo-hospital
#11
A Wardhana, R Djan, Z Halim
Infection is a major cause of mortality and morbidity among burn patients. An effective measure to reduce infection is routine monitoring of bacterial infection and antimicrobial susceptibility patterns at the burn unit. This will help to create a burn centre-specific empirical antibiotic therapy protocol. A retrospective, descriptive study was conducted at the Cipto Mangunkusumo Hospital (RSCM) Burn Unit between September-November 2016. Data regarding bacterial culture isolates, antimicrobial susceptibility spectrum, and the number of burn patients diagnosed with sepsis were collected...
June 30, 2017: Annals of Burns and Fire Disasters
https://www.readbyqxmd.com/read/29020310/levofloxacin-prophylaxis-during-induction-therapy-for-pediatric-acute-lymphoblastic-leukemia
#12
Joshua Wolf, Li Tang, Patricia M Flynn, Ching-Hon Pui, Aditya H Gaur, Yilun Sun, Hiroto Inaba, Tracy Stewart, Randall T Hayden, Hana Hakim, Sima Jeha
Background: Infection is the most important cause of treatment-related morbidity and mortality in pediatric patients treated for acute lymphoblastic leukemia (ALL). Although routine in adults with leukemia, antibacterial prophylaxis is controversial in pediatrics because of insufficient evidence for its efficacy or antibiotic choice and concerns about promoting antibiotic resistance and Clostridium difficile infection. Methods: This was a single-center, observational cohort study of patients with newly diagnosed ALL, comparing prospectively collected infection-related outcomes in patients who received no prophylaxis, levofloxacin prophylaxis, or other prophylaxis during induction therapy on the total XVI study...
September 14, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29020250/empiric-therapy-with-carbapenem-sparing-regimens-for-bloodstream-infections-due-to-extended-spectrum-%C3%AE-lactamase-producing-enterobacteriaceae-results-from-the-increment-cohort
#13
Zaira Raquel Palacios-Baena, Belén Gutiérrez-Gutiérrez, Esther Calbo, Benito Almirante, Pierluigi Viale, Antonio Oliver, Vicente Pintado, Oriol Gasch, Luis Martínez-Martínez, Johann Pitout, Murat Akova, Carmen Peña, José Molina Gil-Bermejo, Alicia Hernández, Mario Venditti, Nuria Prim, German Bou, Evelina Tacconelli, Mario Tumbarello, Axel Hamprecht, Helen Giamarellou, Manel Almela, Federico Pérez, Mitchell J Schwaber, Joaquín Bermejo, Warren Lowman, Po-Ren Hsueh, José Ramón Paño-Pardo, Julián Torre-Cisneros, Maria Souli, Robert A Bonomo, Yehuda Carmeli, David L Paterson, Álvaro Pascual, Jesús Rodríguez-Baño
Background: There is little information about the efficacy of active alternative drugs to carbapenems except β-lactam/β-lactamase inhibitors for the treatment of bloodstream infections (BSIs) due to extended-spectrum β-lactamase-producing Enterobacteriaceae (ESBL-E). The objective of this study was to assess the outcomes of patients with BSI due to ESBL-E who received empiric therapy with such drugs (other active drugs [OADs]) or carbapenems. Methods: A multinational retrospective cohort study of patients with BSI due to ESBL-E who received empiric treatment with OADs or carbapenems was performed...
August 19, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29020234/should-the-aminoglycoside-%C3%AE-lactam-combination-be-abandoned-in-all-severely-ill-patients-with-presumed-gram-negative-infection
#14
M Lipcsey, M Castegren, M Furebring, J Sjölin
No abstract text is available yet for this article.
September 7, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29019016/repurposing-zidovudine-in-combination-with-tigecycline-for-treating-carbapenem-resistant-enterobacteriaceae-infections
#15
S M S Ng, J S P Sioson, J M Yap, F M Ng, H S V Ching, J W P Teo, R Jureen, J Hill, C S B Chia
The global emergence of carbapenem-resistant Enterobacteriaceae (CRE) presents a significant clinical concern, prompting the WHO to prioritize CRE as a top priority pathogen in their 2017 global antibiotic-resistant bacteria priority list. Due to the fast-depleting antibiotic arsenal, clinicians are now resorting to using once-abandoned, highly toxic antibiotics such as the polymyxins and aminoglycosides, creating an urgent need for new antibiotics. Drug repurposing, the application of an approved drug for a new therapeutic indication, is deemed a plausible solution to this problem...
October 10, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/29017452/whole-genome-sequencing-for-the-molecular-characterization-of-carbapenem-resistant-klebsiella-pneumoniae-strains-isolated-at-the-italian-asst-fatebenefratelli-sacco-hospital-2012-2014
#16
Sara Giordana Rimoldi, Bernardina Gentile, Cristina Pagani, Annamaria Di Gregorio, Anna Anselmo, Anna Maria Palozzi, Antonella Fortunato, Valentina Pittiglio, Anna Lisa Ridolfo, Maria Rita Gismondo, Giuliano Rizzardini, Florigio Lista
BACKGROUND: The emergence of carbapenem-resistant Klebsiella pneumoniae strains is threatening antimicrobial treatment. METHODS: Sixty-eight carbapenemase-producing K. pneumoniae strains isolated at Luigi Sacco University Hospital-ASST Fatebenefratelli Sacco (Milan, Italy) between 2012 and 2014 were characterised microbiologically and molecularly. They were tested for drug susceptibility and carbapenemase phenotypes, investigated by means of repetitive extra-genic palindromic polymerase chain reaction (REP-PCR), and fully sequenced by means of next-generation sequencing for the in silico analysis of multi-locus sequence typing (MLST), their resistome, virulome and plasmid content, and their core single nucleotide polymorphism (SNP) genotypes...
October 10, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28993332/amikacin-pharmacokinetics-to-optimize-dosing-in-neonates-with-perinatal-asphyxia-treated-with-hypothermia
#17
Sinziana Cristea, Anne Smits, Aida Kulo, Catherijne A J Knibbe, Mirjam van Weissenbruch, Elke H J Krekels, Karel Allegaert
Aminoglycosides pharmacokinetics (PK) is expected to change in neonates with perinatal asphyxia treated with therapeutic hypothermia (PATH). Several amikacin dosing guidelines have been proposed to treat neonates with (suspected) septicemia, however, none provide adjustments in the case of PATH. Therefore, we aimed to quantify the differences in amikacin PK between neonates with and without PATH to propose suitable dosing recommendations.Based on amikacin therapeutic drug monitoring data collected retrospectively from neonates with PATH, combined with a published dataset, we assessed the impact of PATH on amikacin PK using population modelling...
October 9, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28993173/role-of-mexab-oprm-and-mexxy-oprm-efflux-pumps-and-class-1-integrons-in-resistance-to-antibiotics-in-burn-and-intensive-care-unit-isolates-of-pseudomonas-aeruginosa
#18
Hamid Reza Goli, Mohammad Reza Nahaei, Mohammad Ahangarzadeh Rezaee, Alka Hasani, Hossein Samadi Kafil, Mohammad Aghazadeh, Mojtaba Nikbakht, Younes Khalili
BACKGROUND: The overexpression of efflux pumps and existence of class 1 integrons are the most important mechanisms that contribute to antimicrobial resistance in Pseudomonas aeruginosa especially in burn and Intensive Care Units (ICUs). The present study evaluated the role of MexAB-OprM and MexXY-OprM efflux pumps and class 1 integrons in resistance to antibiotics in burn and ICU isolates of P. aeruginosa. METHODS: Fifteen burn and forty-two ICU isolates were obtained from four hospitals in Northwest Iran...
October 6, 2017: Journal of Infection and Public Health
https://www.readbyqxmd.com/read/28993064/antimicrobial-susceptibility-of-microorganisms-that-cause-urinary-tract-infections-in-pediatric-patients
#19
Jesús Rodríguez-Lozano, Ana de Malet, María Eliecer Cano, Luis de la Rubia, Reinhard Wallmann, Luis Martínez-Martínez, Jorge Calvo
INTRODUCTION: Cumulative susceptibility reports are a valuable tool for the empirical treatment of urinary tract infections, especially in the current context of increasing resistance rates. Our objective was to analyze the antimicrobial susceptibility of bacterial isolates in urine cultures of pediatric patients during a five-year period. METHODS: Retrospective study of urine cultures from 2011 to 2015. Identification and antimicrobial susceptibility tests were performed using the Vitek-2 system (BioMérieux(®)) and categorized according to EUCAST criteria...
October 6, 2017: Enfermedades Infecciosas y Microbiología Clínica
https://www.readbyqxmd.com/read/28992413/phenotypic-optimization-of-urea-thiophene-carboxamides-to-yield-potent-well-tolerated-and-orally-active-protective-agents-against-aminoglycoside-induced-hearing-loss
#20
Sarwat Chowdhury, Kelly N Owens, R Jason Herr, Qin Jiang, Xinchao Chen, Graham Johnson, Vincent E Groppi, David W Raible, Edwin W Rubel, Julian A Simon
Hearing loss is a major public health concern with no pharmaceutical intervention for hearing protection or restoration. Using zebrafish neuromast hair cells-a robust model for mammalian auditory and vestibular hair cells- we identified a urea-thiophene carboxamide, 1 (ORC-001) as protective against aminoglycoside antibiotic (AGA)-induced hair cell death. The 50% protection (HC50) concentration conferred by 1 is 3.2 μM with protection against 200μM neomycin approaching 100%. 1 was sufficiently safe and drug-like to validate otoprotection in an in vivo rat hearing loss model...
October 9, 2017: Journal of Medicinal Chemistry
keyword
keyword
4976
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"