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antimicrobial resistence

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https://www.readbyqxmd.com/read/29785529/isolation-and-characterization-of-bacillus-sp-gfp-2-a-novel-bacillus-strain-with-antimicrobial-activities-from-whitespotted-bamboo-shark-intestine
#1
Jia Wu, Guoqiang Xu, Yangyang Jin, Cong Sun, Li Zhou, Guodong Lin, Rong Xu, Ling Wei, Hui Fei, Dan Wang, Jianqing Chen, Zhengbing Lv, Kuancheng Liu
The abuse of antibiotics and following rapidly increasing of antibiotic-resistant pathogens is the serious threat to our society. Natural products from microorganism are regarded as the important substitution antimicrobial agents of antibiotics. We isolated a new strain, Bacillus sp. GFP-2, from the Chiloscyllium plagiosum (Whitespotted bamboo shark) intestine, which showed great inhibitory effects on the growth of both Gram-positive and Gram-negative bacteria. Additionally, the growth of salmon was effectively promoted when fed with inactivated strain GFP-2 as the inhibition agent of pathogenic bacteria...
May 22, 2018: AMB Express
https://www.readbyqxmd.com/read/29785480/potential-treatment-options-in-a-post-antibiotic-era
#2
R R Bragg, C M Meyburgh, J-Y Lee, M Coetzee
Following the Golden Age of antibiotic discovery in the previous century, the rate of antibiotic discovery has plummeted during the past 50 years while the incidence of antimicrobial resistance is ever-increasing. Presently, humankind is forced to address a major public health threat in the form of multiple drug resistance and urgent action is required to halt the advent of a post-antibiotic era. This chapter aims to draw the attention to the escalating global crisis of antimicrobial resistance fueled by the irresponsible use of antibiotics in healthcare and animal production sectors...
2018: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29785214/etiological-trends-and-patterns-of-antimicrobial-resistance-in-respiratory-infections
#3
Salma M Al-Zain Ahmed, Sara S Abdelrahman, Doua M Saad, Isra S Osman, Modasir G Osman, Eltahir A G Khalil
Background: Respiratory infections are one of the commonest causes of morbidity and mortality related to infectious diseases worldwide. The emergence of antimicrobial resistance is a major global health problem which is well established in developing countries. Good clinical suspicion and correct laboratory identification of respiratory infection causing organisms followed by the appropriate management are needed to compact both community-acquired and nosocomial infection respiratory infections...
2018: Open Microbiology Journal
https://www.readbyqxmd.com/read/29785209/acute-suppurative-thyroiditis-caused-by-thyroid-papillary-carcinoma-in-the-right-thyroid-lobe-of-a-healthy-woman
#4
Hazuki Otani, Masakazu Notsu, Sayo Koike, Miwa Morita, Masahiro Yamamoto, Mika Yamauchi, Takahumi Fuchiwaki, Ichiro Morikura, Noriaki Aoi, Hideyuki Kawauchi, Teruaki Iwabashi, Asuka Araki, Noriyoshi Ishikawa, Riruke Maruyama, Toshitsugu Sugimoto
Background: The thyroid gland is resistant to microbial infection, because of its organ characteristics such as encapsulation, iodine content, and rich blood supply. Therefore, acute suppurative thyroiditis (AST), as a bacterial infection of the thyroid gland, is rarely seen. AST typically takes places on the left side the neck region in children, because of the coincidence of the left piriform sinus fistula, as a most common route of infection. AST is also usually seen in immunocompromised hosts...
2018: Thyroid Research
https://www.readbyqxmd.com/read/29784853/carbapenem-non-susceptible-haemophilus-influenzae-with-penicillin-binding-protein-3-containing-amino-acid-insertion
#5
Kazuki Kitaoka, Kouji Kimura, Hiromitsu Kitanaka, Hirotsugu Banno, Wanchun Jin, Jun-Ichi Wachino, Yoshichika Arakawa
Prevalence of β-lactamase-negative ampicillin-resistant Haemophilus influenzae (BLNAR) has become a clinical concern. In BLNAR, amino acid substitutions in penicillin-binding protein 3 (PBP3) are relevant to the β-lactam resistance. Carbapenem-non-susceptible H. influenzae isolates have been rarely reported. Through antimicrobial susceptibility testing and nucleotide sequence analysis of ftsI , encoding PBP3, and utilizing a collection of H. influenzae clinical isolates in our laboratory, we obtained a carbapenem-non-susceptible clinical isolate (NUBL1772) that possessed an altered PBP3 containing V525_N526insM...
May 21, 2018: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/29784512/epidemiology-and-etiology-of-invasive-bacterial-infection-in-infants-%C3%A2-60-days-old-treated-in-emergency-departments
#6
Christopher Woll, Mark I Neuman, Christopher M Pruitt, Marie E Wang, Eugene D Shapiro, Samir S Shah, Russell J McCulloh, Lise E Nigrovic, Sanyukta Desai, Adrienne G DePorre, Rianna C Leazer, Richard D Marble, Fran Balamuth, Elana A Feldman, Laura F Sartori, Whitney L Browning, Paul L Aronson
OBJECTIVES: To help guide empiric treatment of infants ≤60 days old with suspected invasive bacterial infection by describing pathogens and their antimicrobial susceptibilities. STUDY DESIGN: Cross-sectional study of infants ≤60 days old with invasive bacterial infection (bacteremia and/or bacterial meningitis) evaluated in the emergency departments of 11 children's hospitals between July 1, 2011 and June 30, 2016. Each site's microbiology laboratory database or electronic medical record system was queried to identify infants from whom a bacterial pathogen was isolated from either blood or cerebrospinal fluid...
May 18, 2018: Journal of Pediatrics
https://www.readbyqxmd.com/read/29784441/effect-of-methicillin-resistant-staphylococcus-aureus-in-japan
#7
Hironori Uematsu, Kazuto Yamashita, Seiko Mizuno, Susumu Kunisawa, Keigo Shibayama, Yuichi Imanaka
BACKGROUND: Methicillin-resistant Staphylococcus aureus (MRSA) is the most common antimicrobial-resistant organism identified in Japanese health care facilities. This study analyzed the clinical and economic burdens attributable to methicillin resistance in S aureus in Japanese hospitals. METHODS: We retrospectively investigated data from 14,905 inpatients of 57 hospitals combined with data from nosocomial infection surveillance and administrative claim databases...
May 18, 2018: American Journal of Infection Control
https://www.readbyqxmd.com/read/29784271/boronic-acid-inhibitors-of-the-class-a-%C3%AE-lactamase-kpc-2
#8
Jingyuan Zhou, Paul Stapleton, Shozeb Haider, Jess Healy
The rapid rise of antimicrobial resistance is one of the greatest challenges currently facing medical science. The most common cause of resistance to β-lactam antibiotics is the expression of β-lactamase enzymes, such as KPC-2. As such the development of novel inhibitors of KPC-2 and related enzymes is of the upmost importance. We report the design and synthesis of novel boronic acid transition state analogs containing a 1,4-substituted 1,2,3-triazole linker based on the known inhibitor 3-nitrophenyl boronic acid and demonstrate that they are promising scaffolds for the development inhibitors of KPC-2 with the ability to recover sensitivity to the antibiotic cefotaxime...
April 27, 2018: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/29784062/multidrug-resistant-proteus-mirabilis-and-escherichia-coli-causing-fulminant-necrotising-fasciitis-a-case-report
#9
Eugene Vernyuy Yeika, Joyce Bei Foryoung, Derrick Tembi Efie, Eugene Adze Nkwetateba, Paul Nkemtendong Tolefac, Marcelin Ngowe Ngowe
BACKGROUND: Necrotizing fasciitis is a rare soft tissue infection characterized by rapid progressive necrosis with relative sparing of underlying muscles. This case is reported to highlight the emergence of multidrug resistant microbes in recent days which limits the use of empiric antibiotic therapy and necessitates early cultures and sensitivity enabling targeted antibiotic therapy. Factors that lead to antimicrobial resistance especially in sub-Saharan Africa have also been discussed...
May 21, 2018: BMC Research Notes
https://www.readbyqxmd.com/read/29784040/antimicrobial-resistance-profile-of-staphylococcus-aureus-isolated-from-patients-with-infection-at-tikur-anbessa-specialized-hospital-addis-ababa-ethiopia
#10
Sileshi Tadesse, Haile Alemayehu, Admasu Tenna, Getachew Tadesse, Tefaye Sisay Tessema, Workineh Shibeshi, Tadesse Eguale
BACKGROUND: Staphylococcus aureus is one of the major pathogens of public health importance responsible for various forms of infection. Development of resistance to commonly used antimicrobials limited treatment options against infections due to this pathogen. Antimicrobial resistance profile of Staphylococcus aureus isolated from patients with surgical site infection and ear infection and corresponding nasal swab was investigated in Tikur Anbessa Specialized Hospital (TASH), Addis Ababa, Ethiopia...
May 21, 2018: BMC Pharmacology & Toxicology
https://www.readbyqxmd.com/read/29783685/novel-imidazole-aldoximes-with-broad-spectrum-antimicrobial-potency-against-multidrug-resistant-gram-negative-bacteria
#11
Mirjana Skočibušić, Renata Odžak, Alma Ramić, Tomislav Smolić, Tomica Hrenar, Ines Primožič
In the search for a new class of potential antimicrobial agents, five novel N -substituted imidazole 2-aldoximes and their six quaternary salts were evaluated. The antimicrobial activity was assessed against a panel of representative Gram-positive and Gram-negative bacteria, including multidrug resistant bacteria. All compounds demonstrated potent in vitro activity against the tested microorganisms, with MIC values ranging from 6.25 to 50.0 μg/mL. Among the tested compounds, two quaternary compounds ( N -but-3-enyl- and meta - ( 10 ) or para - N -chlorobenzyl ( 11 ) imidazolium 2-aldoximes) displayed the most potent and broad-spectrum activity against both Gram-positive and Gram-negative bacterial strains...
May 18, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29782954/comparison-between-disk-diffusion-and-agar-dilution-methods-to-determine-in-vitro-susceptibility-of-corynebacterium-spp-clinical-isolates-and-update-of-their-susceptibility
#12
Claudia Barberis, Eugenia Sandoval, Carlos Hernán Rodriguez, María Soledad Ramírez, Angela Famiglietti, Marisa Almuzara, Carlos Vay
INTRODUCTION: Although Corynebacterium species are part of the skin and mucous membranes microbiota, human infections caused by Corynebacterium spp. have been reported and the multidrug resistance pattern of the recovered isolates was emphasized. Due to the usefulness of disk diffusion in daily practice, the purpose of this work was to compare disk diffusion against agar dilution to determine disk diffusion breakpoints and to review the antimicrobial susceptibility of the most frequent Corynebacterium spp...
May 18, 2018: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/29782818/antimicrobial-activity-profiles-of-amphiphilic-xanthone-derivatives-are-a-function-of-their-molecular-oligomerization
#13
Jun-Jie Koh, Shuimu Lin, Yang Bai, Wendy Wan Ling Sin, Thet Tun Aung, Jianguo Li, Verma Chandra, Konstantin Pervushin, Roger W Beuerman, Shouping Liu
Currently, membrane-targeting small antimicrobial peptidomimetics (SAP) are important in antibiotic development because bacteria appear to develop resistance to these surface-active compounds less readily. However, the molecular membrane-targeting action of SAPs has received little attention. In this study, we investigated the effect of oligomerization of amphiphilic xanthone, a model SAP, on its antimicrobial properties against both Gram-positive and Gram-negative bacteria. First, oligomer formation by an amphiphilic xanthone, compound 2 (also coded as AM052), was investigated via solution-state nuclear magnetic resonance (NMR) spectroscopy...
May 18, 2018: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29782697/fewer-defects-in-the-surface-slows-the-hydrolysis-rate-decreases-the-ros-generation-potential-and-improves-the-non-ros-antimicrobial-activity-of-mgo
#14
Nemanja Anicˇić, Marija Vukomanović, Tilen Koklicˇ, Danilo Suvorov
Magnesium oxide (MgO) is recognised as exhibiting a contact-based antibacterial activity. However, a comprehensive study of the impact of atomic-scale surface features on MgO's antibacterial activity is lacking. In this study, the nature and abundance of the native surface defects on different MgO powders are thoroughly investigated. Their impacts on the hydrolysis kinetics, antibacterial activity against Escherichia coli (ATCC 47076), Staphylococcus epidermidis and Pseudomonas aeruginosa and the reactive oxygen species (ROS) generation potential are determined and explained...
May 21, 2018: Small
https://www.readbyqxmd.com/read/29782464/use-of-probiotics-in-the-prevention-of-nosocomial-infections
#15
Ivana Trivić, Iva Hojsak
Nosocomial, hospital-acquired or health care-associated infections occur worldwide, affecting both developed and developing countries. This results in a prolonged hospital stay, increased antimicrobial resistance, increased mortality rate, and significant financial burden on the health care system. Routine preventive measures have led to the decrease in infection spreading; however, it cannot successfully prevent all of them, making a place for the development of new strategies, including probiotics. The aim of this review was to summarize available evidence of the role of probiotics in the prevention of nosocomial infections in children...
May 18, 2018: Journal of Clinical Gastroenterology
https://www.readbyqxmd.com/read/29782237/effect-of-porins-and-bla-kpc-expression-on-activity-of-imipenem-with-relebactam-in-klebsiella-pneumoniae-can-antibiotic-combinations-overcome-resistance
#16
Gregory Balabanian, Michael Rose, Nyla Manning, David Landman, John Quale
Imipenem with relebactam is a novel β-lactam-β-lactamase inhibitor that has activity against most KPC-producing Enterobacteriaceae. Using 10 isolates of KPC-possessing Klebsiella pneumoniae, we assessed the relationship between imipenem-relebactam minimum inhibitory concentrations (MICs) and mechanisms known to contribute to antimicrobial resistance. The effect of adding a second agent was assessed by time-kill experiments. Mutations affecting the genes encoding porins ompK35 and ompK36 and identification of β-lactamases were assessed by PCR...
May 21, 2018: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/29781595/-results-of-the-implementation-of-an-antimicrobial-stewardship-program-in-the-gerencia-de-atenci%C3%A3-n-integrada-of-alcazar-de-san-juan-castilla-la-mancha
#17
M A Asencio Egea, O Herráez Carrera, M Huertas Vaquero, H D Patiño Ortega, M Franco Huerta, P Alcázar Carmona, M C Conde García, C Muñoz-Cuevas, C Román Ortiz, J Gaitán Pitera, R Carranza González, J R Barberá
OBJECTIVE: Our aim was to evaluate the efficiency of an ASP after its implementation in 2016 in a Spanish hospital quality system. METHODS: Efficiency of the ASP was measured by process and outcome indicators at the level of the patient's quality of life, antimicrobial consumption and percentage of resistance to them during the 2016-2017 period. In 2017, the failures mode and effects analysis (FMEA) methodology was applied. An annual satisfaction survey was conducted...
May 18, 2018: Revista Española de Quimioterapia: Publicación Oficial de la Sociedad Española de Quimioterapia
https://www.readbyqxmd.com/read/29781542/diversity-of-staphylococcus-pseudintermedius-in-carriage-sites-and-skin-lesions-of-dogs-with-superficial-bacterial-folliculitis-potential-implications-for-diagnostic-testing-and-therapy
#18
Rikke Friis Larsen, Lene Boysen, Lisbeth Rem Jessen, Luca Guardabassi, Peter Damborg
BACKGROUND: Staphylococcus pseudintermedius is genotypically diverse within the canine population and multiple strains may colonize individual dogs at any given time. If multiple strains with distinct antimicrobial resistance profiles are present in superficial bacterial folliculitis (SBF), sampling a single skin lesion for culture and antimicrobial susceptibility testing (AST) might be inadequate to select effective therapy. HYPOTHESIS/OBJECTIVES: To investigate S...
May 21, 2018: Veterinary Dermatology
https://www.readbyqxmd.com/read/29781236/detection-of-acetyltransferase-modification-of-kanamycin-an-aminoglycoside-antibiotic-in-bacteria-using-ultra-high-performance-liquid-chromatography-tandem-mass-spectrometry
#19
Johnny J Perez, Chin-Yi Chen
RATIONALE: The occurrence of antibiotic resistant (AR) bacteria is a worldwide issue that has the potential, if not addressed, to eliminate classes of antibiotics that have extended life expectancy in the last century. An approach to confront this threat is the development of technologies that greatly accelerate the detection of AR to minimize unnecessary treatment involving antibiotics. Development of an analytical method for rapid detection of aminoglycoside resistance using liquid chromatography mass spectrometry (LC-MS) has not been reported in literature and is described here...
May 20, 2018: Rapid Communications in Mass Spectrometry: RCM
https://www.readbyqxmd.com/read/29780833/the-growing-genetic-and-functional-diversity-of-extended-spectrum-beta-lactamases
#20
REVIEW
Sadeeq Ur Rahman, Tariq Ali, Ijaz Ali, Nazir Ahmad Khan, Bo Han, Jian Gao
The β -lactams-a large class of diverse compounds-due to their excellent safety profile and broad antimicrobial spectrum are considered to be the most widely used therapeutic class of antibacterials prescribed in human and veterinary clinical practices. This, unfortunately, has also given rise to a continuous increased resistance globally in health care settings as well as in the community due to their permanent selective force driving diversification of the resistance mechanism. Resistance against β -lactams is increasing rapidly as novel β -lactamases, enzymes that degrade β -lactams, are being discovered each day such as recent emergence of extended spectrum β -lactamases (ESBL) that have the ability to inactivate most of the cephalosporins...
2018: BioMed Research International
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