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macrolides resistance genes staphylococcus aureus

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https://www.readbyqxmd.com/read/28938539/dissemination-of-macrolides-fusidic-acid-and-mupirocin-resistance-among-staphylococcus-aureus-clinical-isolates
#1
Xingmei Liu, Shanshan Deng, Jinwei Huang, Yaling Huang, Yu Zhang, Qin Yan, Yanhong Wang, Yanyue Li, Chengfu Sun, Xu Jia
As an increasingly common cause of skin infections worldwide, the prevalence of antibiotic-resistant Staphylococcus aureus (S. aureus) across China has not been well documented. This literature aims to study the resistance profile to commonly used antibiotics, including macrolides, fusidic acid (FA) and mupirocin, and its relationship to the genetic typing in 34 S. aureus strains, including 6 methicillin-resistant S. aureus (MRSA), isolated from a Chinese hospital. The MIC results showed 27 (79.4%), 1 (2.9%) and 6 (17...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28894731/prevalence-of-genotypes-that-determine-resistance-of-staphylococci-to-macrolides-and-lincosamides-in-serbia
#2
Milena Mišić, Jelena Čukić, Dejan Vidanović, Milanko Šekler, Sanja Matić, Mihailo Vukašinović, Dejan Baskić
Macrolides, lincosamides, and streptogramins (MLS) resistance genes are responsible for resistance to these antibiotics in Staphylococcus infections. The purpose of the study was to analyze the distribution of the MLS resistance genes in community- and hospital-acquired Staphylococcus isolates. The MLS resistance phenotypes [constitutive resistance to macrolide-lincosamide-streptogramin B (cMLSb), inducible resistance to macrolide-lincosamide-streptogramin B (iMLSb), resistance to macrolide/macrolide-streptogramin B (M/MSb), and resistance to lincosamide-streptogramin A/streptogramin B (LSa/b)] were determined by double-disc diffusion method...
2017: Frontiers in Public Health
https://www.readbyqxmd.com/read/28867496/draft-genome-sequence-of-multidrug-resistant-staphylococcus-haemolyticus-ipk_tsa25-harbouring-a-staphylococcus-aureus-plasmid-ps0385-1
#3
Hyung Jun Kim, Soojin Jang
OBJECTIVES: Staphylococcus haemolyticus is the second most frequently isolated coagulase-negative staphylococci from blood cultures. Moreover, multidrug resistance associated with the genome flexibility of S. haemolyticus has been increasingly reported worldwide. Here we report the draft genome sequence of multidrug-resistant S. haemolyticus IPK_TSA25 isolated from a building surface in South Korea. METHODS: Genomic DNA of S. haemolyticus IPK_TSA25 was sequenced using the PacBio RS II sequencing platform...
September 1, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/28729204/characterisation-of-clinical-isolates-of-oxacillin-susceptible-meca-positive-staphylococcus-aureus-in-china-from-2009-to-2014
#4
Yunjia Song, Lanqing Cui, Yuan Lv, Yun Li, Feng Xue
OBJECTIVES: The aim of this study was to investigate the prevalence and molecular characteristics of clinical oxacillin-susceptible mecA-positive Staphylococcus aureus (OS-MRSA) isolates in China from July 2009 to June 2014. METHODS: A total of 2068 non-duplicate S. aureus isolates were collected from 21 hospitals. Antimicrobial susceptibility testing was performed by the agar dilution method. All OS-MRSA strains were screened for the presence of the genes mecA, mecC and nuc as well as the Panton-Valentine leukocidin gene (pvl)...
July 17, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/28483717/surveillance-of-the-activity-of-solithromycin-cem-101-against-bacteria-from-respiratory-tract-infections
#5
Stephen Hawser, Ian Morrissey, Barbara Lemos, Kara Keedy, Prabhavathi Fernandes
The activity of solithromycin, a fourth-generation macrolide and novel fluoroketolide, was evaluated by determining its minimum inhibitory concentration (MIC) (via Clinical and Laboratory Standards Institute broth microdilution) against 2797 contemporary clinical respiratory tract isolates collected from North America, Europe, Asia-Pacific and other regions of the world in 2012-13. Solithromycin was very active against Streptococcus pneumoniae and Streptococcus pyogenes, with MIC90 of 0.25 and 0.12 µg/mL, respectively...
May 5, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28473827/prevalence-virulence-genes-antimicrobial-susceptibility-and-genetic-diversity-of-staphylococcus-aureus-from-retail-aquatic-products-in-china
#6
Dongli Rong, Qingping Wu, Mingfang Xu, Jumei Zhang, Shubo Yu
Staphylococcus aureus is an important food-borne opportunistic pathogen that frequently causes severe blood and tissue infections or even fatal illnesses. Although S. aureus has been extensively studied in livestock and poultry foods in China, limited information has been reported in aquatic products. Accordingly, in this study, we aimed to characterize S. aureus in aquatic products purchased from retail markets in China. In total, 320 aquatic food samples were collected from 32 provincial capitals in China...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28459227/prevalence-of-inducible-clindamycin-resistance-in-methicillin-resistant-staphylococcus-aureus-the-first-study-in-jordan
#7
Dua'a Jarajreh, Amin Aqel, Hamed Alzoubi, Wael Al-Zereini
INTRODUCTION: A high rate of infections with methicillin-resistant Staphylococcus aureus (MRSA) has been documented, in both hospital- (HA-MRSA) and community-acquired (CA-MRSA) diseases in Jordan. Erythromycin and clindamycin are considered treatments of choice. However, resistance to erythromycin with false susceptibility to clindamycin in vitro may lead to therapeutic failure. Hence, it is mandatory to study the prevalence of inducible resistance to macrolide-lincosamide-streptogramin B (iMLSB) antibiotics conferred by erm genes in those bacteria...
April 30, 2017: Journal of Infection in Developing Countries
https://www.readbyqxmd.com/read/28438941/new-macrolide-lincosamide-streptogramin-b-resistance-gene-erm-48-on-the-novel-plasmid-pjw2311-in-staphylococcus-xylosus
#8
Juliette R K Wipf, Matthew C Riley, Stephen A Kania, David A Bemis, Sabrina Andreis, Sybille Schwendener, Vincent Perreten
Whole-genome sequencing of Staphylococcus xylosus strain JW2311 from bovine mastitis milk identified the novel 49.3-kb macrolide-lincosamide-streptogramin B (MLSB) resistance plasmid pJW2311. It contained the macrolide resistance gene mph(C), the macrolide-streptogramin B resistance gene msr(A), and the new MLSB resistance gene erm(48) and could be transformed into Staphylococcus aureus by electroporation. Functionality of erm(48) was demonstrated by cloning and expression in S. aureus.
July 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28351345/short-term-increase-in-prevalence-of-nasopharyngeal-carriage-of-macrolide-resistant-staphylococcus-aureus-following-mass-drug-administration-with-azithromycin-for-trachoma-control
#9
Ebrima Bojang, James Jafali, Vincent Perreten, John Hart, Emma M Harding-Esch, Ansumana Sillah, David C W Mabey, Martin J Holland, Robin L Bailey, Anna Roca, Sarah E Burr
BACKGROUND: Mass drug administration (MDA) with azithromycin is a corner-stone of trachoma control however it may drive the emergence of antimicrobial resistance. In a cluster-randomized trial (Clinical trial gov NCT00792922), we compared the reduction in the prevalence of active trachoma in communities that received three annual rounds of MDA to that in communities that received a single treatment round. We used the framework of this trial to carry out an opportunistic study to investigate if the increased rounds of treatment resulted in increased prevalence of nasopharyngeal carriage of macrolide-resistant Staphylococcus aureus...
March 28, 2017: BMC Microbiology
https://www.readbyqxmd.com/read/28343857/staphylococcus-aureus-nasal-carriage-in-health-care-workers-first-report-from-a-major-public-hospital-in-argentina
#10
Carina Andrea Boncompain, Cristian Alejandro Suárez, Héctor Ricardo Morbidoni
Staphylococcus aureus causes numerous mild to severe infections in humans, both in health facilities and in the community. Patients and health care workers (HCWs) may disseminate strains during regular medical examinations or hospitalization. The aim of this study was to determine the nasal carriage rate of methicillin-susceptible and methicillin-resistant S. aureus among health care workers at Hospital Provincial del Centenario, a public general hospital in Rosario, Argentina. A transversal study was conducted on 320 health care workers...
March 24, 2017: Revista Argentina de Microbiología
https://www.readbyqxmd.com/read/28116552/characterisation-of-staphylococcus-aureus-isolates-from-bloodstream-infections-democratic-republic-of-the-congo
#11
S Vandendriessche, H De Boeck, A Deplano, M-F Phoba, O Lunguya, D Falay, N Dauly, J Verhaegen, O Denis, J Jacobs
Staphylococcus aureus is known worldwide as an invasive pathogen, but information on S. aureus from bloodstream infections in Central Africa remains scarce. A collection of S. aureus blood culture isolates recovered from hospitals in four provinces in the Democratic Republic of the Congo (2009-2013) was assessed. A total of 27/108 isolates were methicillin-resistant S. aureus (MRSA), of which >70% were co-resistant to aminoglycosides, tetracyclines, macrolides and lincosamides. For MRSA and methicillin-susceptible S...
July 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28088472/cholesterol-and-ergosterol-affect-the-activity-of-staphylococcus-aureus-antibiotic-efflux-pumps
#12
S R Tintino, C D M Oliveira-Tintino, F F Campina, M S Costa, R P Cruz, R L S Pereira, J C Andrade, E O Sousa, J P Siqueira-Junior, H D M Coutinho, T C Leal-Balbino, V Q Balbino
The aim of this study is to evaluate the effect of ergosterol on steroids and cholesterol efflux pumps in multidrug resistant strains of S. aureus. Were used RN4220 harboring plasmid pUL5054, which carries the gene encoding the MsrA macrolide efflux protein; and IS-58, which possesses the TetK tetracycline efflux protein; 1199B resists hydrophilic fluoroquinolones via a NorA-mediated mechanism and wild strain 1199B. The Minimal Inhibitory Concentration (MIC) was determined and the evaluation of possible inhibition of efflux pumps by reduction of MIC...
March 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/27994923/microbiological-features-of-upper-respiratory-tract-infections-in-bulgarian-children-for-the-period-1998-2014
#13
Raina Tzvetanova Gergova, Guergana Petrova, Stefan Gergov, Petko Minchev, Ivan Mitov, Tanya Strateva
BACKGROUND: Across the globe, upper respiratory tract infections (URTIs) are the most prevalent cause of morbidity in childhood. AIMS: The aim of our study is to analyze the incidence and etiology of bacterial URTIs in Bulgarian children, as well as the increasing antimicrobial resistance to the most common etiologic agents over a period of 17 years. STUDY DESIGN: Retrospective study. METHODS: The study material comprised the data from 4768 patients (aged 1-16 years) with URTI during the period from 1998-2014...
November 2016: Balkan Medical Journal
https://www.readbyqxmd.com/read/27942364/a-low-prevalence-of-inducible-macrolide-lincosamide-and-streptogramin-b-resistance-phenotype-among-methicillin-susceptible-staphylococcus-aureus-isolated-from-malaysian-patients-and-healthy-individuals
#14
Asma Mesbah Elkammoshi, Hamed Ghasemzadeh-Moghaddam, Syafinaz Amin Nordin, Niazlin Mohd Taib, Suresh Kumar Subbiah, Vasanthakumari Neela, Rukman Awang Hamat
BACKGROUND: Antibiotic resistance among Staphylococcus aureus is of great concern worldwide. This resistance is further complicated by the ability of S. aureus to confer cross-resistance to other antibiotics due to the presence of resistance genes, such as erythromycin resistance methylase (erm) genes, which render the bacterium resistant to macrolide-lincosamide-streptogramin B (MLSB) antibiotics. Resistance to these antibiotics can lead to therapeutic failure, resulting in significant morbidity and mortality in patients with S...
October 2016: Jundishapur Journal of Microbiology
https://www.readbyqxmd.com/read/27928482/frequency-of-genes-encoding-erythromycin-ribosomal-methylases-among-staphylococcus-aureus-clinical-isolates-with-different-d-phenotypes-in-tehran-iran
#15
Sareh Sadat Hosseini, Mohammad Niakan, Horieh Saderi, Mitra Motallebi, Morovat Taherikalani, Khairollah Asadollahi, Mohammad Emaneini
BACKGROUND AND OBJECTIVES: Macrolide, lincosamide and streptogramin type B (MLSB) antibiotics are important in the treatment of Staphylococcus aureus infections and existence of isolates with ability to resist against MLSB antibiotics is worrisome. MATERIALS AND METHODS: In this cross sectional study, 101 S. aureus isolates were collected from patients of five selected hospitals in Tehran over a period of five months. Disk diffusion tests and differentiation between constitutive and inducible resistances were carried out by D-test...
June 2016: Iranian Journal of Microbiology
https://www.readbyqxmd.com/read/27920760/prevalence-of-the-antibiotic-resistance-genes-in-coagulase-positive-and-negative-staphylococcus-in-chicken-meat-retailed-to-consumers
#16
Kamelia Osman, Jihan Badr, Khalid S Al-Maary, Ihab M I Moussa, Ashgan M Hessain, Zeinab M S Amin Girah, Usama H Abo-Shama, Ahmed Orabi, Aalaa Saad
The use of antibiotics in farm management (growing crops and raising animals) has become a major area of concern. Its implications is the consequent emergence of antibiotic resistant bacteria (ARB) and accordingly their access into the human food chain with passage of antibiotic resistance genes (ARG) to the normal human intestinal microbiota and hence to other pathogenic bacteria causative human disease. Therefore, we pursued in this study to unravel the frequency and the quinolone resistance determining region, mecA and cfr genes of methicillin-susceptible Staphylococcus aureus (MSSA), methicillin-resistant S...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27799208/a-novel-erm-44-gene-variant-from-a-human-staphylococcus-saprophyticus-isolate-confers-resistance-to-macrolides-and-lincosamides-but-not-streptogramins
#17
Christian Strauss, Yanmin Hu, Anthony Coates, Vincent Perreten
A novel erm(44) gene variant, erm(44)v, has been identified by whole-genome sequencing in a Staphylococcus saprophyticus isolate from the skin of a healthy person. It has the particularity to confer resistance to macrolides and lincosamides but not to streptogramin B when expressed in S. aureus The erm(44)v gene resides on a 19,400-bp genomic island which contains phage-associated proteins and is integrated into the chromosome of S. saprophyticus.
January 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/27609468/genetic-basis-of-resistance-waves-among-methicillin-resistant-staphylococcus-aureus-isolates-recovered-from-milk-and-meat-products-in-egypt
#18
A M Ammar, A M Attia, M I Abd El-Hamid, I M El-Shorbagy, S A Abd El-Kader
Antimicrobial resistance of methicillin-resistant Staphylococcus aureus (MRSA) poses a serious problem for clinicians worldwide. The present study attempted to evaluate the susceptibility patterns of MRSA to various antimicrobials and the prevalence of inducible clindamycin resistance as well as the relevant antibiotic and antiseptic resistance genes among these isolates. Totally, 40 MRSA isolates were recovered from examined milk and meat product samples (18.60%). Multi-drug resistance (MDR) was remarkably observed among 85% of these isolates...
August 31, 2016: Cellular and Molecular Biology
https://www.readbyqxmd.com/read/27607914/a-rapid-loop-mediated-isothermal-amplification-lamp-method-for-detection-of-the-macrolide-streptogramin-type-b-resistance-gene-msra-in-staphylococcus-aureus
#19
Xiao-Qin Mu, Bin-Bin Liu, Ephraim Hui, William Huang, Li-Chen Yao, Li-Bo Duo, Wen-Ying Sun, Gui-Qiu Li, Fu-Xiang Wang, Shu-Lin Liu
Macrolide-streptogramin type B resistance (the MSB phenotype) is a multidrug resistance phenotype in Staphylococcus aureus conferred by the resistance gene msrA. However, bacteria having the MSB phenotype are susceptible to lincosamides and 16-membered ring macrolides, which makes profiling resistance genes necessary and urgent for timely and appropriate use of antimicrobials. In this study, the loop-mediated isothermal amplification (LAMP) assay was optimized for prompt detection of the msrA gene. msrA gene sequences were obtained from the National Center for Biotechnology Information (NCBI) database and primers were designed using the LAMP primer designing software PrimerExplorer v...
December 2016: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/27556226/nasal-carriage-of-resistant-staphylococcus-aureus-in-a-medical-student-community
#20
Carolina Y Gushiken, Liliane B Medeiros, Bruna P Correia, Joyce M Souza, Daniela V Moris, Valeria C Pereira, Rogerio Giuffrida, Marcus V P Rodrigues
Staphylococcus aureus can cause a variety of infections due to its high transmissibility, high pathogenic potential and resistance to multiple drugs, factors that contribute to the relevance of infections in healthcare services. The aim of this study was to document phenotypic and genotypic resistance factors of Staphylococcus aureus strains, isolated from nasal mucosa of medical students. A nasal swab was collected from the nares (nostrils) of 222 medical students. After collection, the samples were submitted to isolation and identification procedures...
September 2016: Anais da Academia Brasileira de Ciências
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