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https://www.readbyqxmd.com/read/28637330/occurrence-of-aminoglycoside-modifying-enzymes-ames-among-isolates-of-escherichia-coli-exhibiting-high-levels-of-aminoglycoside-resistance-isolated-from-korean-cattle-farms
#1
Kuastros Mekonnen Belaynehe, Seung Won Shin, Park Hong-Tae, Han Sang Yoo
This study investigated 247 Escherichia coli isolates collected from four cattle farms to characterize aminoglycoside-modifying enzyme (AME) genes, their plasmid replicons and transferability. Out of 247 isolates a high number of isolates (total 202; 81.78%) were found resistant to various antibiotics by disc-diffusion. Of the 247 strains 139 (56.3%) were resistant to streptomycin and other antibiotics resistance followed as tetracycline (12.15%), ampicillin (7%), chloramphenicol (5.7%) and trimethoprim-sulfamethoxazole (0...
June 15, 2017: FEMS Microbiology Letters
https://www.readbyqxmd.com/read/28636791/isotretinoin-and-lymecycline-treatments-modify-the-skin-microbiota-in-acne
#2
Hanna-Leena Kelhälä, Velma T E Aho, Nanna Fyhrquist, Pedro A B Pereira, Minna E Kubin, Lars Paulin, Riitta Palatsi, Petri Auvinen, Kaisa Tasanen, Antti Lauerma
Oral retinoids and tetracyclines have a major role in acne treatment. Here, we report for the first time the effect of isotretinoin and lymecycline therapy on the skin microbiota in cheek, back and armpit swab samples of acne vulgaris patients using 16S ribosomal RNA (16S rRNA) gene amplicon sequencing. Propionibacterium acnes was the most common in sebaceous areas of healthy and untreated acne skin and more abundant in back than cheek samples. Five taxa, including a Streptococcus taxon, differed significantly between the cheek samples of healthy controls and acne patients, and acne severity was positively correlated with the abundance of Propionibacterium...
June 21, 2017: Experimental Dermatology
https://www.readbyqxmd.com/read/28635681/antimicrobial-activity-of-nitric-oxide-releasing-ti-6al-4v-metal-oxide
#3
Nina A Reger, Wilson S Meng, Ellen S Gawalt
Titanium and titanium alloy materials are commonly used in joint replacements, due to the high strength of the materials. Pathogenic microorganisms can easily adhere to the surface of the metal implant, leading to an increased potential for implant failure. The surface of a titanium-aluminum-vanadium (Ti-6Al-4V) metal oxide implant material was functionalized to deliver an small antibacterial molecule, nitric oxide. S-nitroso-penicillamine, a S-nitrosothiol nitric oxide donor, was covalently immobilized on the metal oxide surface using self-assembled monolayers...
June 21, 2017: Journal of Functional Biomaterials
https://www.readbyqxmd.com/read/28635638/antibiotic-concentrations-decrease-during-wastewater-treatment-but-persist-at-low-levels-in-reclaimed-water
#4
Prachi Kulkarni, Nathan D Olson, Greg A Raspanti, Rachel E Rosenberg Goldstein, Shawn G Gibbs, Amir Sapkota, Amy R Sapkota
Reclaimed water has emerged as a potential irrigation solution to freshwater shortages. However, limited data exist on the persistence of antibiotics in reclaimed water used for irrigation. Therefore, we examined the fate of nine commonly-used antibiotics (ampicillin, azithromycin, ciprofloxacin, linezolid, oxacillin, oxolinic acid, penicillin G, pipemidic acid, and tetracycline) in differentially treated wastewater and reclaimed water from two U.S. regions. We collected 72 samples from two Mid-Atlantic and two Midwest treatment plants, as well as one Mid-Atlantic spray irrigation site...
June 21, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28630196/antimicrobial-susceptibility-trends-among-staphylococcus-aureus-from-united-states-hospitals-results-from-7-years-of-the-ceftaroline-aware-surveillance-program-2010-2016
#5
Helio S Sader, Rodrigo E Mendes, Jennifer M Streit, Robert K Flamm
We evaluated trends in Staphylococcus aureus antimicrobial susceptibility in United States hospitals in the 2010-2016 period. A total of 21,056 clinical isolates from 42 medical centers were tested for susceptibility by broth microdilution methods. MRSA rates decreased from 50.0% (2010) to 42.2% (2016). Susceptibility to erythromycin, levofloxacin, and clindamycin increased slightly, whereas susceptibility to ceftaroline, trimethoprim-sulfamethoxazole, and tetracycline remained stable. Ceftaroline retained potent activity against MSSA and MRSA (97...
June 19, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28628752/high-prevalence-of-resistance-to-fluoroquinolones-and-tetracycline-campylobacter-spp-isolated-from-poultry-in-poland
#6
Anna Woźniak-Biel, Gabriela Bugla-Płoskońska, Alicja Kielsznia, Kamila Korzekwa, Anna Tobiasz, Agnieszka Korzeniowska-Kowal, Alina Wieliczko
Campylobacter spp. is a major cause of foodborne diseases in humans, particularly when transmitted by the handling or consumption of undercooked poultry meat. Most Campylobacter infections are self-limiting, but antimicrobial treatment (e.g., fluoroquinolones and macrolides) is necessary in severe or prolonged cases. The indiscriminate use of these drugs, both in clinical medicine and animal production, has a major impact on public health. The aim of the present study was to identify Campylobacter strains, isolated from turkey and broilers, using both PCR and the matrix-assisted laser desorption-ionization time-of-flight (MALDI-TOF) methods to reveal the accuracy of identification, as well to evaluate the antimicrobial and genetic resistance of the investigated strains...
June 19, 2017: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/28627563/highly-efficient-visible-light-driven-photocatalytic-degradation-of-tetracycline-by-a-z-scheme-g-c3n4-bi3tao7-nanocomposite-photocatalyst
#7
Bifu Luo, Min Chen, Zhengyuan Zhang, Jie Xu, Di Li, Dongbo Xu, Weidong Shi
Spatial separation of photogenerated electron-hole pairs is one of the most important factors that determine the efficiency of a photocatalyst. It is well acknowledged that the fabrication of heterogeneous photocatalysts with two different inorganic semiconductors is a good strategy to effectively improve the charge separation of electrons and holes. This study describes a novel visible light-induced g-C3N4/Bi3TaO7 composite photocatalyst with superior photocatalytic properties toward the degradation of tetracycline (TC) by visible light irradiation...
June 19, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28627490/genotyping-and-antimicrobial-resistance-genes-of-yersinia-ruckeri-isolates-from-rainbow-trout-farms
#8
Muhammed Duman, Soner Altun, Murat Cengiz, Izzet Burcin Saticioglu, Ayse Gul Buyukekiz, Pinar Sahinturk
In this study, we compared 142 Yersinia ruckeri isolates collected between 2013 and 2016 from 6 different regions in Turkey. A total of 18 different genogroups were found, though most of the isolates clustered into the same genogroup as serotype O1. As immunization of fish with inactivated Y. ruckeri by injection, immersion, or feeding provide minimal protection against Y. ruckeri infection in Turkey, many fish producers use antimicrobials unrestrictedly, resulting in antimicrobial resistance in aquatic pathogens...
June 19, 2017: Diseases of Aquatic Organisms
https://www.readbyqxmd.com/read/28626737/high-level-bacterial-contamination-of-secondary-school-students-mobile-phones
#9
Siiri Kõljalg, Rando Mändar, Tiina Sõber, Tiiu Rööp, Reet Mändar
INTRODUCTION: While contamination of mobile phones in the hospital has been found to be common in several studies, little information about bacterial abundance on phones used in the community is available. Our aim was to quantitatively determine the bacterial contamination of secondary school students' mobile phones. METHODS: Altogether 27 mobile phones were studied. The contact plate method and microbial identification using MALDI-TOF mass spectrometer were used for culture studies...
June 2017: Germs
https://www.readbyqxmd.com/read/28625021/antibiotic-prophylaxis-for-elective-hysterectomy
#10
REVIEW
Reuben Olugbenga Ayeleke, Selma Mourad, Jane Marjoribanks, Karim A Calis, Vanessa Jordan
BACKGROUND: Elective hysterectomy is commonly performed for benign gynaecological conditions. Hysterectomy can be performed abdominally, laparoscopically, or vaginally, with or without laparoscopic assistance. Antibiotic prophylaxis consists of administration of antibiotics to reduce the rate of postoperative infection, which otherwise affects 40%-50% of women after vaginal hysterectomy, and more than 20% after abdominal hysterectomy. No Cochrane review has systematically assessed evidence on this topic...
June 18, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28623550/antibiotic-susceptibility-profiles-among-campylobacter-isolates-obtained-from-international-travelers-between-2007-and-2014
#11
A Post, D Martiny, N van Waterschoot, M Hallin, U Maniewski, E Bottieau, M Van Esbroeck, E Vlieghe, S Ombelet, O Vandenberg, J Jacobs
Campylobacter infection is a common cause of diarrhea among international travelers. We studied antibiotic resistance patterns among Campylobacter isolates obtained from international travelers according to travel destination. Three collections of isolates obtained from international travelers between 2007 and 2014 (Institute of Tropical Medicine, the "Laboratoire Hospitalier Universitaire de Bruxelles "and the Belgian National Reference Centre for Campylobacter) were used. Isolates were tested for minimal inhibitory concentration (MIC) values (E-test macromethod) for fluoroquinolones, macrolides, tetracyclines, amoxicillin-clavulanic acid, and meropenem...
June 17, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28622639/an-investigation-into-the-rapid-removal-of-tetracycline-using-multilayered-graphene-phase-biochar-derived-from-waste-chicken-feather
#12
Huiqin Li, Jingtao Hu, Yue Meng, Jinhua Su, Xiaojing Wang
This study investigated the removal of tetracycline (TC) using multilayered graphene-phase biochar (MGB) derived from waste chicken feather. MGB was produced through a two-stage carbonization and KOH-activation method. MGB was characterized by scanning electron microscopy (SEM), transmission electron microscope (TEM), Fourier transform infrared (FT-IR), Raman spectra, Zeta potential and elemental analysis. Various chemical functional groups were demonstrated on the surface of MGB. MGB was featured by a very large BET surface area of 1838m(2)/g...
June 13, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28620316/incidence-and-antimicrobial-sensitivity-profiles-of-normal-conjunctiva-bacterial-flora-in-the-central-area-of-china-a-hospital-based-study
#13
Hua Tao, Juan Wang, Lei Li, Hui-Zhi Zhang, Meng-Ping Chen, Le Li
Objective: To study the distribution and patterns of resistance to antimicrobial agents of normal conjunctival bacteria. Materials and Methods: Conjunctival specimens were collected from 8,224 patients and then cultured, which underwent antimicrobial susceptibility test following standard methods. Patients with infectious symptoms such as erythema or oedema and those using systemic or topical antibiotics within 1 month were excluded. Results: In this study, the incidence of isolated bacteria was 24.2%. The middle aged group of 41-65 years presented the lowest rate of bacterial isolation which was 19...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28620262/prevalence-of-multiple-drug-resistant-streptococcus-suis-in-and-around-guwahati-india
#14
Mrinalee Devi, Jyoti B Dutta, Swaraj Rajkhowa, Dhireswar Kalita, Girindra Kumar Saikia, Bipin Chandra Das, Razibuddin Ahmed Hazarika, Gauranga Mahato
AIM: This study was conducted to determine the prevalence and antimicrobial susceptibility of Streptococcus suis and their resistance patterns isolated from both clinically healthy carriers and diseased pigs in and around Guwahati, Assam, India. MATERIALS AND METHODS: A total of 497 samples were collected during October, 2012, to April, 2014, from clinically healthy (n=67) and diseased (n=230) pigs of varying age and either sex maintained under organized and unorganized farming systems...
May 2017: Veterinary World
https://www.readbyqxmd.com/read/28620255/detection-of-emerging-antibiotic-resistance-in-bacteria-isolated-from-subclinical-mastitis-in-cattle-in-west-bengal
#15
Arnab Das, Chanchal Guha, Ujjwal Biswas, Partha Sarathi Jana, Amaresh Chatterjee, Indranil Samanta
AIM: The aim of this work was to detect antibiotic resistance in Gram-negative bacteria isolated from subclinical mastitis in cattle in West Bengal. MATERIALS AND METHODS: The milk samples were collected from the cattle suffering with subclinical mastitis in West Bengal. The milk samples were inoculated into the nutrient broth and incubated at 37°C. On the next day, the growth was transferred into nutrient agar and MacConkey agar. All the pure cultures obtained from nutrient agar slant were subjected to Gram-staining and standard biochemical tests...
May 2017: Veterinary World
https://www.readbyqxmd.com/read/28619591/doxycycline-as-a-new-chiral-selector-in-capillary-electrophoresis
#16
Min Gyeong Jang, Myung Duk Jang, Jung Hag Park
Doxycycline (DOX) is one of the tetracycline class of antibiotics and has not been examined for its enantioseparation abilities previously. The purpose of the present work was to evaluate DOX as a chiral selector (CS) using capillary electrophoresis (CE) in nonaqueous mode. Systematic experiments were performed to investigate the effects of concentration of CS, compositions of organic solvents and background electrolytes, applied voltage on chiral separation of a set of acidic chiral compounds. Excellent resolutions of enantiomers of acidic chiral compounds were attained in a background electrolytes composed of 50:50 acetonitrile/methanol+214mM acetic acid+ 63mM triethylamine and 38mM DOX...
June 9, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28619239/antimicrobial-susceptibility-of-haemophilus-influenzae-strains-isolated-from-the-urethra-of-men-with-acute-urethritis-and-or-epididymitis
#17
Takashi Deguchi, Shin Ito, Kyoko Hatazaki, Kengo Horie, Mitsuru Yasuda, Keita Nakane, Kosuke Mizutani, Tomohiro Tsuchiya, Shigeaki Yokoi, Nozomu Hanaoka, Ken Shimuta, Makoto Ohnishi, Tetsuro Muratani, Masahiro Nakano
We determined minimum inhibitory concentrations (MICs) of 41 antimicrobial agents for 73 clinical strains of Haemophilusinfluenzae isolated from the urethra of men with acute urethritis and/or epididymitis and examined the strains for the production of β-lactamase. We also compared their antimicrobial susceptibilities with those of H. influenzae strains from respiratory tract or otorhinolaryngological infections that were reported in Japan. The proportion of β-lactamase-nonproducing ampicillin-resistant strains from acute urethritis and/or epididymitis appeared to be lower, but that of β-lactamase-producing ampicillin-resistant strains appeared to be higher, compared with those from respiratory tract or otorhinolaryngological infections...
June 12, 2017: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/28619166/surveillance-of-antimicrobial-resistance-among-escherichia-coli-from-chicken-and-swine-china-2008-2015
#18
Peng Zhang, Zhangqi Shen, Chunping Zhang, Li Song, Bing Wang, Jun Shang, Xiuying Yue, Zhina Qu, Xinnan Li, Liqin Wu, Yongjun Zheng, Anand Aditya, Yang Wang, Shixin Xu, Congming Wu
The objective of this study was to investigate the antimicrobial resistance trend in Escherichia coli from food animals in China. During 2008-2015, a total of 15,130 E. coli were isolated from chicken and swine from seven provinces. The susceptibilities of these isolates to nine classes of antimicrobial agents were determined using broth microdilution susceptibility method. The findings of this study include: (1) multi-drug resistance was highly prevalent in E. coli; (2) these E. coli isolates showed high resistant rate (>80%) to several old drugs, including ampicillin, tetracycline and sulfisoxazole; (3) increasing resistance to colistin, florfenicol and ceftiofur was observed; (4) the E...
May 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/28619141/a-cross-sectional-study-of-oral-antibacterial-treatment-patterns-in-relation-to-specific-diarrhoeal-pathogens-in-weaner-pigs
#19
Vibeke F Jensen, Sven-Erik L Jorsal, Nils Toft
According to international guidelines, the use of antibacterials should be evidence based and prudent. This register-based, cross-sectional study investigates the potential effect of laboratory findings on the patterns of antibacterial oral (batch) medication of weaner pigs, and the level of compliance with national guidelines for antibacterial use. The study population includes 1,736 weaner herds (≈65% of all Danish weaner pigs) that were subject to laboratory analysis from the National Veterinary Institute on Brachyspira pilosicoli, Lawsonia intracellularis, and E...
May 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/28618168/streptococcus-pyogenes-quinolinate-salvage-pathway-structural-and-functional-studies-of-quinolinate-phosphoribosyl-transferase-and-nh3-dependent-nad-synthetase
#20
William T Booth, Trevor L Morris, David P Mysona, Milan J Shah, Linda K Taylor, Taylor W Karlin, Kathryn Clary, Karolina A Majorek, Lesa R Offermann, Maksymilian Chruszcz
Streptococcus pyogenes, also known as Group A Strep (GAS), is an obligate human pathogen that is responsible for millions of infections and numerous deaths per year. Infection manifestations can range from simple, acute pharyngitis to more complex, necrotizing fasciitis. To date, most treatments for GAS infections involve the use of common antibiotics including tetracycline and clindamycin. Unfortunately, new strains have been identified that are resistant to these drugs therefore, new targets must be identified to treat drug resistant strains...
June 15, 2017: FEBS Journal
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