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Synergistic Antibacterial Activity Between 1,4-Naphthoquinone and β-Lactam Antibiotics Against Methicillin-Resistant Staphylococcus aureus.

Jeremy Kean Yi Yap, Sharon Yoke Ying Tan, Shi Qi Tang, Vui Kien Thien, Elaine Wan Ling Chan,

Aims: Currently, limited antibiotics are available to treat methicillin-resistant Staphylococcus aureus (MRSA) infections. One approach is the use of adjuvants in antibiotic therapy. 1,4-Naphthoquinones are naturally occurring alkaloids shown to have antibacterial properties. The objective of this study is to investigate the synergy between 1,4-naphthoquinone and selected β-lactam antibiotics and ... Read more >>

Microb. Drug Resist. (Microbial drug resistance (Larchmont, N.Y.))
[2020, :]

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Risk Factors, Molecular Epidemiology, and Outcomes of Carbapenem-Resistant Klebsiella pneumoniae Infection for Hospital-Acquired Pneumonia: A Matched Case-Control Study in Eastern China During 2015-2017.

Yan Zuo, Dongmei Zhao, Guobin Song, Jiabin Li, Yuanhong Xu, Zhongxin Wang,

This study was conducted to acknowledge microbiological and clinical characteristics of hospital-acquired pneumonia (HAP) caused by carbapenem-resistant Klebsiella pneumoniae (CRKP). A retrospective, 1:1 matched (age, gender, specimen source, and ward) case-control study was conducted during 2015-2017 in a tertiary teaching hospital in Anhui, China. Multivariate logistic regression analysis demonstrated that ... Read more >>

Microb. Drug Resist. (Microbial drug resistance (Larchmont, N.Y.))
[2020, :]

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Activity of Omadacycline and Other Tetracyclines Against Contemporary Gram-Negative Pathogens from New York City Hospitals.

Alejandro Iregui, David Landman, John Quale,

Antibiotic-resistant Enterobacteriaceae and Acinetobacter baumannii are problematic pathogens, with few treatment options for multidrug-resistant (MDR)-A. baumannii and few oral options for extended spectrum β-lactamase (ESBL)-producing and MDR-Enterobacteriaceae. Omadacycline, a newer tetracycline derivative, has activity against some of these pathogens. We tested the in vitro activity of omadacycline against a contemporary ... Read more >>

Microb. Drug Resist. (Microbial drug resistance (Larchmont, N.Y.))
[2020, :]

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Extended Spectrum β-Lactamase-Producing Escherichia coli and Klebsiella pneumoniae from Broiler Liver in the Center of Algeria, with Detection of CTX-M-55 and B2/ST131-CTX-M-15 in Escherichia coli.

Nadia Safia Chenouf, Isabel Carvalho, Chafik Redha Messaï, Laura Ruiz-Ripa, Olouwafemi Mistourath Mama, Yacine Titouche, Abdelghani Zitouni, Ahcène Hakem, Carmen Torres,

This study aimed to determine the prevalence and diversity of extended-spectrum β-lactamase (ESBL)-producing and multidrug-resistant (MDR) Escherichia coli and Klebsiella pneumoniae isolates from 136 broiler livers randomly purchased in 136 retail markets in Djelfa (Algeria). Isolation was performed on Hektoen agar and bacterial identification was carried out by API20E system ... Read more >>

Microb. Drug Resist. (Microbial drug resistance (Larchmont, N.Y.))
[2020, :]

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Genetic Characterization of Carbapenemase-Producing Enterobacter cloacae Complex and Pseudomonas aeruginosa of Food of Animal Origin from Egypt.

Mustafa Sadek, Ahmed M Soliman, Hirofumi Nariya, Toshi Shimamoto, Tadashi Shimamoto,

The increasing spread of carbapenem resistance is a serious global public health concern that negatively affects human and animal health. In this study we characterized the carbapenemase production in gram-negative bacteria isolated from different meat and meat products in Egypt. Phenotypic and genotypic susceptibility testing were investigated. Two Enterobacter cloacae ... Read more >>

Microb. Drug Resist. (Microbial drug resistance (Larchmont, N.Y.))
[2020, :]

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Identification and Characterization of Salmonella Serovars Isolated from Pig Farms in Benin City, Edo State, Nigeria: One Health Perspective.

Isoken H Igbinosa, Abeni Beshiru, Shirley C Ikediashi, Etinosa O Igbinosa,

The present study was carried out to characterize Salmonella serovars from commercial pig farms in Benin City, Nigeria. A total of 81 samples were collected from the Agricultural Development Program farms between January and June 2017. Standard culture-based and polymerase chain reaction procedures were adopted in the isolation and identification ... Read more >>

Microb. Drug Resist. (Microbial drug resistance (Larchmont, N.Y.))
[2020, :]

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Fluoroquinolone Resistance and Virulence Properties Among Wastewater Aeromonas caviae Isolates.

Monika Nowrotek, Łukasz Jałowiecki, Grażyna Płaza,

The study provides data on antibiotic resistance as well as the virulence characteristics of Aeromonas caviae isolated from raw and treated wastewater. The isolates were identified as A. caviae by 16S rRNA gene sequencing. In the analyzed strains, high frequency for the following genes was observed: aac(6')-Ib-cr, qnrB, and qnrD. ... Read more >>

Microb. Drug Resist. (Microbial drug resistance (Larchmont, N.Y.))
[2020, :]

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Differential Trends in Extended-Spectrum Beta-Lactamase-Producing Escherichia coli Infections in Four Health Care Facilities in a Single Metropolitan Area: A Retrospective Analysis.

Eva Raphael, Henry F Chambers,

Background: Prevalence of extended-spectrum beta-lactamase-producing Escherichia coli (ESBL-E. coli) is increasing worldwide, but greatly varies geographically. We compared the prevalence of ESBL-E. coli infections at four distinct health care facilities in San Francisco, California. Methods: Antimicrobial susceptibility reports were obtained for E. coli isolates from (1) a county hospital, (2) ... Read more >>

Microb. Drug Resist. (Microbial drug resistance (Larchmont, N.Y.))
[2020, :]

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Bloodstream Infections due to Carbapenem-Resistant Klebsiella pneumoniae: A Single-Center Retrospective Study on Risk Factors and Therapy Options.

Lisha Shen, Chan Lian, Bingquan Zhu, Yake Yao, Qing Yang, Jianying Zhou, Hua Zhou,

We aimed to compare efficacy of different patterns of antibiotics and explore the risk factors related to mortality in patients with bloodstream infections (BSIs) due to carbapenem-resistant Klebsiella pneumoniae (CRKP). This study retrospectively included 89 patients with BSIs due to CRKP with complete data during the year of 2018 in ... Read more >>

Microb. Drug Resist. (Microbial drug resistance (Larchmont, N.Y.))
[2020, :]

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Environmental Phage-Based Cocktail and Antibiotic Combination Effects on Acinetobacter baumannii Biofilm in a Human Urine Model.

Bartłomiej Grygorcewicz, Bartosz Wojciuk, Marta Roszak, Natalia Łubowska, Piotr Błażejczak, Joanna Jursa-Kulesza, Rafał Rakoczy, Helena Masiuk, Barbara Dołęgowska,

The emergence of multidrug-resistant (MDR) bacterial infections poses a catastrophic threat to medicine. The development of phage-based therapy combined with antibiotics might be an advantageous weapon in the arms race between human and MDR bacteria. A cocktail composed of the MDR Acinetobacter baumannii infecting bacteriophages with high lytic activity was ... Read more >>

Microb. Drug Resist. (Microbial drug resistance (Larchmont, N.Y.))
[2020, :]

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Prevalence of Extended-Spectrum Beta-Lactamase/Carbapenemase Genes and Quinolone-Resistance Determinants in Klebsiella pneumoniae Clinical Isolates from Respiratory Infections in Myanmar.

Meiji Soe Aung, Nyein Chan Win, Nilar San, Myat Su Hlaing, Yi Yi Myint, Pyae Phyo Thu, Myint Thazin Aung, Kyaw Thu Yaa, Win Win Maw, Noriko Urushibara, Nobumichi Kobayashi,

In recent years, nosocomial infections due to multidrug resistant Klebsiella pneumoniae strains have been increasing, associated with growing trend of resistance to beta-lactams and fluoroquinolones (FQs) worldwide. In this study, prevalence of beta-lactamase genes and resistance mechanisms to FQ were analyzed in 191 clinical K. pneumoniae isolates derived from respiratory ... Read more >>

Microb. Drug Resist. (Microbial drug resistance (Larchmont, N.Y.))
[2020, :]

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Methylsulfonylmethane Exhibits Bacteriostatic Inhibition of Vancomycin-Resistant Enterococcus faecium, In Vitro.

Toni L Poole, Rodney Benjamin, Kenneth J Genovese, David J Nisbet,

The aim of this study was to evaluate the antibacterial properties of methylsulfonylmethane (MSM) on vancomycin-resistant Enterococcus faecium (VRE). Bacterial proliferation was measured spectrophotometrically during growth in brain heart infusion broth with 0%, 3%, 5%, 7%, 10%, 12%, and 16% MSM. To assess the mechanism of inhibition, VRE was grown ... Read more >>

Microb. Drug Resist. (Microbial drug resistance (Larchmont, N.Y.))
[2020, :]

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Plasmid-Determined Colistin Resistance in the North African Countries: A Systematic Review.

Abdelaziz Touati, Assia Mairi,

We have conducted a systematic review to update available information on plasmid-mediated colistin resistance (mobilized colistin resistance [mcr]) genes in North African countries. We have searched the articles of PubMed, Scopus, and Web of Science databases reporting plasmid-mediated colistin resistance bacteria isolated in North African countries. After searching and selection, ... Read more >>

Microb. Drug Resist. (Microbial drug resistance (Larchmont, N.Y.))
[2020, :]

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Prevalence and Molecular Characterization of Extended Spectrum β-Lactamase, Plasmid-Mediated Quinolone Resistance, and Carbapenemase-Producing Gram-Negative Bacilli in Burkina Faso.

Soufiane Sanou, Abdoul Salam Ouedraogo, Salim Aberkane, Julie Vendrell, Oumar Ouchar, Nicolas Bouzimbi, Arsène Hema, Armel Poda, Jacques Zoungrana, Georges A Ouedraogo, Christian Carrière, Hélène Jean-Pierre, Rasmata Ouedraogo/Traore, Sylvain Godreuil,

The spreading of carbapenemase-producing gram-negative bacilli (GNB) must be considered as an "urgent" threat. The aim of this study was to determine the prevalence of extended spectrum β-lactamase (ESBL), plasmid-mediated quinolone resistance (PMQR), and carbapenemase-producing GNB and to characterize the supporting genes in GNB specimens isolated from patients and healthy ... Read more >>

Microb. Drug Resist. (Microbial drug resistance (Larchmont, N.Y.))
[2020, :]

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Occurrence, Antimicrobial Resistance Patterns, and Genetic Characterization of Staphylococcus aureus Isolated from Raw Milk in the Dairy Farms over Two Seasons in China.

Cuiping Shi, Zhongna Yu, Harvey Ho, Jun Wang, Wei Wu, Mengru Xing, Yutao Wang, S M E Rahman, Rongwei Han,

This study investigated the occurrence and resistance rates of Staphylococcus aureus strains isolated from raw milk in the dairy farms over two seasons (spring and autumn) and across four regions that included 11 provinces in China. In total, 750 raw milk samples from the 405 dairy farms were collected. Fifteen ... Read more >>

Microb. Drug Resist. (Microbial drug resistance (Larchmont, N.Y.))
[2020, :]

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Phylogenetic Characterization and Multilocus Sequence Typing of Extended-Spectrum Beta Lactamase-Producing Escherichia coli from Food-Producing Animals, Beef, and Humans in Southwest Nigeria.

Olusolabomi J Adefioye, Jörg Weinreich, Stefan Rödiger, Peter Schierack, Olugbenga Adekunle Olowe,

Multidrug-resistant extended-spectrum beta lactamase (ESBL)-producing Escherichia coli strains are emerging globally in both humans and animals. Antimicrobial susceptibility testing and ESBL screening were performed on pure cultures of 216 E. coli isolates from human and animal fecal samples as well as beef. Polymerase chain reaction was performed for the detection ... Read more >>

Microb. Drug Resist. (Microbial drug resistance (Larchmont, N.Y.))
[2020, :]

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Potential Inhibitors Against NDM-1 Type Metallo-β-Lactamases: An Overview.

Smriti Sharma, Sumit Sharma, Parvinder Pal Singh, Inshad Ali Khan,

A new member of the class metallo-β-lactamase (MBL), New Delhi metallo-beta-lactamase 1 (NDM-1) has emerged recently as a leading threat to the treatment of infections that have spread in all major Gram-negative pathogens. The enzyme inactivates antibiotics of the carbapenem family, which are a mainstay for the treatment of antibiotic-resistant ... Read more >>

Microb. Drug Resist. (Microbial drug resistance (Larchmont, N.Y.))
[2020, :]

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Antimicrobial Resistance of Serial Isolates of Acinetobacter baumannii Colonizing the Rectum of Adult Intensive Care Unit Patients in a Teaching Hospital in Kuwait.

Ghayda Al-Hashem, Vincent O Rotimi, M John Albert,

Objectives: Outbreak and endemic isolates of Acinetobacter baumannii are known to be polyclonal. In an ongoing study, we hypothesized that the patient gut was the source of the polyclonality where genetic exchanges take place. To test the hypothesis, we collected 270 serial rectal isolates from 32 adult intensive care unit ... Read more >>

Microb. Drug Resist. (Microbial drug resistance (Larchmont, N.Y.))
[2020, :]

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Characterization of Multidrug-Resistant Isolates of Salmonella enterica Serovars Heidelberg and Minnesota from Fresh Poultry Meat Imported to Portugal.

Leonor Silveira, Alexandra Nunes, Ângela Pista, Joana Isidro, Cristina Belo Correia, Margarida Saraiva, Rita Batista, Isabel Castanheira, Jorge Machado, João Paulo Gomes,

Salmonella enterica serovars Heidelberg and Minnesota frequently display several genetic mobile elements making them potential spreaders of resistance genes. Here, we phenotypically determined the antibiotic resistance profile and subsequently performed whole-genome sequencing on 36 isolates recovered from samples of fresh poultry meat, within the Portuguese Official Inspection Plan for Imported ... Read more >>

Microb. Drug Resist. (Microbial drug resistance (Larchmont, N.Y.))
[2020, :]

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Phenotypic and Genotypic Prevalence of Extended-Spectrum β-Lactamase-Producing Escherichia coli: A Systematic Review and Meta-analysis in Iran.

Leila Jabalameli, Reza Beigverdi, Hamidreza Hagh Ranjbar, Ramin Pouriran, Fereshteh Jabalameli, Mohammad Emaneini,

Background: Despite the existence of discrete and varied studies regarding extended-spectrum β-lactamase-producing Escherichia coli (ESBL-EC) in Iran, a comprehensive analysis on the prevalence of ESBL-EC has not yet been carried out. The current study analyzed published data regarding ESBL-EC in different regions of Iran to gain insight into this significant ... Read more >>

Microb. Drug Resist. (Microbial drug resistance (Larchmont, N.Y.))
[2020, :]

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Prevalence, Epidemiology, Etiology, and Sensitivity of Invasive Bacterial Infections in Pediatric Patients Undergoing Oncological Treatment: A Multicenter Nationwide Study.

Olga Zajac-Spychala, Jacek Wachowiak, Olga Gryniewicz-Kwiatkowska, Aneta Gietka, Bozenna Dembowska-Baginska, Katarzyna Semczuk, Katarzyna Dzierzanowska-Fangrat, Krzysztof Czyzewski, Magdalena Dziedzic, Mariusz Wysocki, Patrycja Zalas-Wiecek, Anna Szmydki-Baran, Lukasz Hutnik, Michal Matysiak, Filip Pierlejewski, Wojciech Mlynarski, Zofia Małas, Wanda Badowska, Ninela Irga-Jaworska, Ewa Bien, Elzbieta Drozynska, Magdalena Bartnik, Tomasz Ociepa, Tomasz Urasiński, Pawel Wawrykow, Jaroslaw Peregud-Pogorzelski, Weronika Stolpa, Grazyna Sobol-Milejska, Jowita Fraczkiewicz, Malgorzata Salamonowicz, Bernarda Kazanowska, Alicja Chybicka, Liliana Chelmecka-Wiktorczyk, Walentyna Balwierz, Iwona Zak, Zuzanna Gamrot-Pyka, Mariola Woszczyk, Renata Tomaszewska, Tomasz Szczepanski, Marcin Plonowski, Maryna Krawczuk-Rybak, Agnieszka Urbanek-Dadela, Grazyna Karolczyk, Jakub Musial, Radoslaw Chaber, Jerzy Kowalczyk, Jan Styczynski,

Background: Infectious complications (IC) caused by bacterial strains often impede anticancer therapy. The study aimed to retrospectively analyze bacterial IC that could help predict the risk and optimize the empirical treatment for bacterial infections in pediatric cancer patients. Patients and Methods: Over a 72-month period, all-in 5,599 children with cancer: ... Read more >>

Microb. Drug Resist. (Microbial drug resistance (Larchmont, N.Y.))
[2020, :]

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Mechanisms of Linezolid Resistance Among Clinical Staphylococcus spp. in Spain: Spread of Methicillin- and Linezolid-Resistant S. epidermidis ST2.

Laura Ruiz-Ripa, Andrea T Feßler, Dennis Hanke, Inga Eichhorn, José Manuel Azcona-Gutiérrez, Carla Andrea Alonso, Mar Olga Pérez-Moreno, Carmen Aspiroz, Alba Bellés, Stefan Schwarz, Carmen Torres,

This study aimed at determining the mechanisms of linezolid resistance and the molecular characteristics of clinical Staphylococcus aureus (n = 2) and coagulase-negative staphylococci (n = 15) isolates obtained from four Spanish hospitals. The detection of linezolid resistance mechanisms (mutations and acquisition of resistance genes) was performed by PCR/sequencing. The antimicrobial resistance and virulence ... Read more >>

Microb. Drug Resist. (Microbial drug resistance (Larchmont, N.Y.))
[2020, :]

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Antimicrobial Resistance and Molecular Characterization of Gene Cassettes from Class 1 Integrons in Pseudomonas aeruginosa Strains.

Mi Liu, Jie Ma, Wei Jia, Wanxiang Li,

We investigated the antibiotic-resistance phenotypes and molecularly characterized class 1 integron gene cassettes from 113 Pseudomonas aeruginosa isolates from patients. Primers specific for the class 1 integron integrase (intI1) gene were used to screen for these integrons using polymerase chain reactions (PCRs). The variable regions of the integrons were PCR-amplified ... Read more >>

Microb. Drug Resist. (Microbial drug resistance (Larchmont, N.Y.))
[2020, 26(6):670-676]

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Combination of Antibiotics-Nisin Reduces the Formation of Persister Cell in Listeria monocytogenes.

Negar Narimisa, Behrooz Sadeghi Kalani, Rokhsareh Mohammadzadeh, Faramarz Masjedian Jazi,

Persister cells are a subpopulation of bacteria with the ability of survival when exposed to lethal doses of antibiotics, and are responsible for antibiotic therapy failure and infection recurrences. In this study, we investigated persister cell formation and the role of nisin in combination with antibiotics in reducing persistence in ... Read more >>

Microb. Drug Resist. (Microbial drug resistance (Larchmont, N.Y.))
[2020, :]

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Development and Evaluation of a Loop-Mediated Isothermal Amplification Assay for Rapid and Specific Identification of Carbapenem-Resistant Acinetobacter baumannii Strains Harboring blaOXA-23, and the Epidemiological Survey of Clinical Isolates.

Puyuan Li, Wenkai Niu, Yun Fang, Dayang Zou, Huiying Liu, Yanhong Qin, Jing Zheng, Xiuyun Yin, Fengjiang Li, Yannan Liu, Xin Yuan, Liuyu Huang, Changqing Bai,

Acinetobacter baumannii is an important nosocomial pathogen in hospital-acquired infections, and carbapenem resistance has been increasingly observed worldwide. Oxacillinase production by blaOXA-23 is a predominant and prevalent carbapenem resistance mechanism of A. baumannii, especially in China. Rapid and specific detection of blaOXA-23 may offer valuable insight for administration of directed ... Read more >>

Microb. Drug Resist. (Microbial drug resistance (Larchmont, N.Y.))
[2020, :]

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