keyword
MENU ▼
Read by QxMD icon Read
search

Tetracycline

keyword
https://www.readbyqxmd.com/read/29778482/randomized-noninferiority-field-trial-evaluating-cephapirin-sodium-for-treatment-of-nonsevere-clinical-mastitis
#1
T Tomazi, T A F Lopes, V Masson, J M Swinkels, M V Santos
The general objective of this study was to evaluate whether cephapirin sodium is noninferior compared with a positive control broad-spectrum product formulated with a combination of antimicrobials for intramammary treatment of nonsevere clinical mastitis. In addition, we compared the efficacy of treatments on the cure risks of pathogen groups (gram-positive, gram-negative, and cultures with no growth) based on culture results. A total of 346 cows distributed in 31 commercial dairy herds were selected to participate in the study, although only 236 met the criteria for evaluation of microbiological cure...
May 16, 2018: Journal of Dairy Science
https://www.readbyqxmd.com/read/29778191/antimicrobial-susceptibility-and-genetic-relatedness-of-respiratory-tract-pathogens-in-weaner-pigs-over-a-12-month-period
#2
Lisa Niemann, Petra Müller, Jasmin Brauns, Rolf Nathaus, Franziska Schäkel, Kerstin Kipschull, Doris Höltig, Michael Wendt, Stefan Schwarz, Kristina Kadlec
The collaboration project VASIB aims at reducing the antibiotic consumption in pig production by integrating information from consulting expertise in clinical inspection, hygiene, epidemiology, microbiology and pharmacology. In this VASIB subproject, we investigated the antimicrobial susceptibility and relatedness of porcine respiratory tract pathogens. Bordetella bronchiseptica (n = 47), Pasteurella multocida (n = 18) and Streptococcus suis (n = 58) were obtained from weaner pigs at two farms. Antimicrobial susceptibility testing was performed by broth microdilution according to CLSI standards...
June 2018: Veterinary Microbiology
https://www.readbyqxmd.com/read/29776449/imipenem-resistance-in-clinical-escherichia-coli-from-qom-iran
#3
Saeed Shams, Ali Hashemi, Mohammad Esmkhani, Somaye Kermani, Elham Shams, Alessandra Piccirillo
OBJECTIVE: The emergence of metallo-β-lactamase-producing Enterobacteriaceae is a worldwide health concern. In this study, the first evaluation of MBL genes, bla IMP and bla VIM , in Escherichia coli resistant to imipenem isolated from urine and blood specimens in Qom, Iran is described. Three hundred urine and blood specimens were analysed to detect the presence of E. coli. Resistance to imipenem and other antimicrobials was determined by disk diffusion and MIC. MBL production was screened using CDDT...
May 18, 2018: BMC Research Notes
https://www.readbyqxmd.com/read/29775903/thermal-treatment-of-biochar-in-the-air-nitrogen-atmosphere-for-developed-mesoporosity-and-enhanced-adsorption-to-tetracycline
#4
Xiaoxiao Zhu, Chunyan Li, Jianfa Li, Bin Xie, Jinhong Lü, Yimin Li
For the purpose of producing carbons with developed mesoporosity, a wood biochar was thermally treated at 600-800 °C in the air/nitrogen atmosphere. The mesopore development was observed when the air flux increased to 50-90 mL/min, and the carbon product having high mesopore surface area (316 m2 /g) and mesopore pore volume (0.284 cm3 /g) was produced at the treatment temperature of 700 °C. The mesopores were developed mainly in the temperature holding stage of thermal treatment, with size mainly ranged from 20 to 60 Å...
May 11, 2018: Bioresource Technology
https://www.readbyqxmd.com/read/29775822/nanocomposite-thin-films-ag-0-np-tio-2-in-the-efficient-removal-of-micro-pollutants-from-aqueous-solutions-a-case-study-of-tetracycline-and-sulfamethoxazole-removal
#5
Alka Tiwari, Alok Shukla, Lalliansanga, Diwakar Tiwari, Seung Mok Lee
The aim of this communication is to synthesize novel Nanocomposite thin film materials (Ag0 (NP)/TiO2 ) using the template process. Surface morphology of materials was obtained by the Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM) analyses. The presence of doped Ag-nanoparticles was confirmed by the TEM images along with the SEM-EDX analyses. The Atomic Force Microscopic images were demonstrated the surface roughness and thickness of Nanocomposite thin films. X-ray diffraction analysis confirmed that TiO2 was predominantly present to its anatase mineral phase...
May 15, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29773506/in-vitro-activity-of-salicylamide-derivatives-against-vancomycin-resistant-enterococci
#6
Sarka Pospisilova, Hana Michnova, Tereza Kauerova, Karel Pauk, Peter Kollar, Jarmila Vinsova, Ales Imramovsky, Alois Cizek, Josef Jampilek
A series of 13 salicylamide derivatives was assessed for antibacterial activity against three isolates of vancomycin-resistant Enterococcus faecalis (VRE) and Enterococcus faecalis ATCC 29212 as a quality standard. The minimum inhibitory concentration was determined by the broth microdilution method with subsequent subcultivation of aliquots to assess minimum bactericidal concentration. The growth kinetics was established by the time-kill assay. Ampicillin, ciprofloxacin, tetracycline and vancomycin were used as the reference antibacterial drugs...
May 14, 2018: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/29772845/doxycycline-impairs-mitochondrial-function-and-protects-human-glioma-cells-from-hypoxia-induced-cell-death-implications-of-using-tet-inducible-systems
#7
Anna-Luisa Luger, Benedikt Sauer, Nadja I Lorenz, Anna L Engel, Yannick Braun, Martin Voss, Patrick N Harter, Joachim P Steinbach, Michael W Ronellenfitsch
Inducible gene expression is an important tool in molecular biology research to study protein function. Most frequently, the antibiotic doxycycline is used for regulation of so-called tetracycline (Tet)-inducible systems. In contrast to stable gene overexpression, these systems allow investigation of acute and reversible effects of cellular protein induction. Recent reports have already called for caution when using Tet-inducible systems as the employed antibiotics can disturb mitochondrial function and alter cellular metabolism by interfering with mitochondrial translation...
May 17, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29772394/antimicrobial-resistance-and-genetic-lineages-of-faecal-enterococci-of-wild-birds-emergence-of-vana-and-vanb2-harboring-enterococcus-faecalis
#8
Houssem Ben Yahia, Sarra Chairat, Nabil Hamdi, Haythem Gharsa, Rym Ben Sallem, Sara Ceballos, Carmen Torres, Karim Ben Slama
Migrating birds have been implicated in pathogen dissemination over long-distances. The lack of data on birds' intestinal microbiota makes these animals a promising path to understand their potential role in the transmission of antibiotic resistant bacteria. This work aims to study the diversity of enterococci species and to analyze the antimicrobial resistant phenotypes/genotypes, as well as the genetic lineages of isolates obtained from faecal and pellet samples of colonial wild birds in Tunisia. Seventy-nine enterococci were recovered of 150 wild bird, after inoculation of samples in Slanetz-Bartley agar, and were identified as E...
May 14, 2018: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/29771255/return-of-the-tetracyclines-omadacycline-a-novel-aminomethylcycline-antimicrobial
#9
J C Cho, L M Childs-Kean, M T Zmarlicka, M P Crotty
Omadacycline is a novel aminomethylcycline antimicrobial agent that is available in both oral and intravenous formulations. The distinguishing structural characteristics of omadacycline from other tetracyclines allow for its continued antimicrobial activity in the presence of traditional tetracycline resistance mechanisms (efflux pumps and ribosomal protection proteins). Omadacycline has been found to have potent activity against antibiotic-resistant pathogens including methicillin-resistant Staphylococcus aureus, vancomycin-resistant Enterococcus, extended spectrum beta-lactamase-producing Escherichia coli and multidrug-resistant Streptococcus pneumoniae...
March 2018: Drugs of Today
https://www.readbyqxmd.com/read/29766261/comprehensive-evaluation-of-autohydrogenotrophic-membrane-biofilm-reactor-treating-otc-enriched-water-medium
#10
Aytekin Celik, Müslün Sara Tunc, Ozge Hanay, Ergin Taskan, Halil Hasar
In the recent years, there has been considerable debate about the potential impacts of antibiotics present in various environments on the public health and ecology. Oxytetracycline (OTC) is one of tetracycline antibiotic group used for growth and treatment of animals and humans. In this study, OTC and nitrate (NO3 -N) were simultaneously reduced using a hydrogen-based membrane biofilm reactor (H2 -MBfR). The system successfully accomplished OTC and nitrate removals. The fluxes of OTC and NO3 -N were 8.96 mg OTC/m2  day and 1100 mg N/m2  day, respectively...
May 15, 2018: Bioprocess and Biosystems Engineering
https://www.readbyqxmd.com/read/29765275/-tristemma-hirtum-and-five-other-cameroonian-edible-plants-with-weak-or-no-antibacterial-effects-modulate-the-activities-of-antibiotics-against-gram-negative-multidrug-resistant-phenotypes
#11
Gaëlle S Nguenang, Armelle T Mbaveng, Aimé G Fankam, Hermione T Manekeng, Paul Nayim, Brice E N Wamba, Victor Kuete
In order to contribute to the fight against infectious diseases, the in vitro antibacterial activity and the antibiotic-potentiating effects of Tristemma hirtum and five other Cameroonian edible plants have been evaluated against Gram-negative multidrug-resistant (MDR) phenotypes. The microdilution method was used to evaluate the bacterial susceptibility of the extracts and their combination to common antibiotics. The phytochemical screening of the extracts was carried out according to standard methods. Phytochemical analysis of the extracts revealed the presence of alkaloids, triterpenes, steroids, and polyphenols, including flavonoids in most of the tested extracts...
2018: TheScientificWorldJournal
https://www.readbyqxmd.com/read/29764933/discovery-of-peroxisome-proliferator-activated-receptor-%C3%AE-ppar%C3%AE-activators-with-a-ligand-screening-system-using-a-human-ppar%C3%AE-expressing-cell-line
#12
Keisuke Tachibana, Tomohiro Yuzuriha, Ryotaro Tabata, Syohei Fukuda, Takashi Maegawa, Rika Takahashi, Keiichi Tanimoto, Hirofumi Tsujino, Kazuto Nunomura, Bangzhong Lin, Yoshiharu Matsuura, Toshiya Tanaka, Takao Hamakubo, Juro Js Sakai, Tatsuhiko Kodama, Tadayuki Kobayashi, Kenji Ishimoto, Hiroyuki Miyachi, Takefumi Doi
Peroxisome proliferator-activated receptor alpha (PPARα) is a ligand-activated transcription factor that belongs to the superfamily of nuclear hormone receptors. PPARα is mainly expressed in the liver, where it activates fatty acid oxidation and lipoprotein metabolism and improves plasma lipid profiles. Therefore, PPARα activators are often used to treat patients with dyslipidemia. To discover additional PPARα activators as potential compounds for use in hypolipidemic drugs, here we established human hepatoblastoma cell lines with luciferase reporter expression from the promoters containing peroxisome proliferator responsive elements (PPRE) and tetracycline-regulated expression of full-length human PPARα to quantify the effects of chemical ligands on PPARα activity...
May 15, 2018: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29762774/occurrence-and-antimicrobial-susceptibility-of-campylobacter-spp-on-fresh-and-refrigerated-chicken-meat-products-in-central-italy
#13
P Casagrande Proietti, S Pergola, S Bellucci, L Menchetti, D Miraglia, M P Franciosini
This study investigated the presence and the level of Campylobacter spp. contamination in 41 thigh samples (with skin) and 37 skinless breast samples collected at the end of slaughter (T1) and after 10 day period at refrigeration temperature (4°C) (T2), corresponding to their commercial shelf life. The isolates were phenotypically classified as Campylobacter spp. and successively identified by conventional multiplex PCR. The antimicrobial susceptibility of the isolates from fresh thigh and breast samples was also determined via the microdilution method (MIC) in Eucamp microtitre plates with known scalar concentrations of: gentamicin (GEN), streptomycin (ST), ciprofloxacin (CIP), tetracycline (TET), erythromycin (ERY), and nalidixic acid (NA)...
May 11, 2018: Poultry Science
https://www.readbyqxmd.com/read/29762682/molecular-detection-of-mutations-involved-in-helicobacter-pylori-antibiotic-resistance-in-algeria
#14
Meryem Bachir, Rachida Allem, Lucie Benejat, Abedelkarim Tifrit, Meriem Medjekane, Amine El-Mokhtar Drici, Francis Megraud, Kara Turki Douidi
Objectives: In Algeria, there are limited data regarding the pattern of Helicobacter pylori primary antibiotic resistance. The aim of this study was to evaluate the primary resistance of H. pylori to clarithromycin, ciprofloxacin, tetracycline and rifampicin and to determine the molecular mechanisms involved in the resistance. Methods: Two hundred and seventy Algerian adults who had never received H. pylori treatment were enrolled in this study. Human biopsies were obtained for culture and antimicrobial susceptibility testing was performed by Etest for clarithromycin, ciprofloxacin, tetracycline and rifampicin...
May 11, 2018: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/29762513/spatiotemporal-labeling-of-melanocytes-in-mice
#15
REVIEW
Sarah Preston, Shweta Aras, M Raza Zaidi
Melanocytes are pigment producing cells in the skin that give rise to cutaneous malignant melanoma, which is a highly aggressive and the deadliest form of skin cancer. Studying melanocytes in vivo is often difficult due to their small proportion in the skin and the lack of specific cell surface markers. Several genetically-engineered mouse models (GEMMs) have been created to specifically label the melanocyte compartment. These models give both spatial and temporal control over the expression of a cellular 'beacon' that has an added benefit of inducible expression that can be activated on demand...
May 15, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29761214/analysis-of-resistance-genes-of-clinical-pannonibacter-phragmitetus-strain-31801-by-complete-genome-sequencing
#16
De-Song Ming, Qing-Qing Chen, Xiao-Tin Chen
To clarify the resistance mechanisms of Pannonibacter phragmitetus 31801, isolated from the blood of a liver abscess patient, at the genomic level, we performed whole genomic sequencing using a PacBio RS II single-molecule real-time long-read sequencer. Bioinformatic analysis of the resulting sequence was then carried out to identify any possible resistance genes. Analyses included Basic Local Alignment Search Tool searches against the Antibiotic Resistance Genes Database, ResFinder analysis of the genome sequence, and Resistance Gene Identifier analysis within the Comprehensive Antibiotic Resistance Database...
May 14, 2018: Archives of Microbiology
https://www.readbyqxmd.com/read/29759239/single-hole-hollow-molecularly-imprinted-polymer-embedded-carbon-dot-for-fast-detection-of-tetracycline-in-honey
#17
Huiyu Li, Li Zhao, Yuan Xu, Tianyu Zhou, Haochi Liu, Ning Huang, Jie Ding, Yi Li, Lan Ding
It is difficult to detect tetracycline (TC) in honey sample by using carbon dots (CDs) because the autofluorescence of the matrix of honey sample overlaps with the fluorescence emission spectrum of the large majority of CDs. Herein, single-hole hollow molecularly imprinted polymers embedded carbon dots (HMIP@CD) was prepared via microwave-assisted method. TC in diluted honey sample was adsorbed by the HMIP@CD within 3 min, after which the HMIP@CD absorbed with TC was separated by centrifugation from honey sample and redispersed into phosphate buffer solution...
August 1, 2018: Talanta
https://www.readbyqxmd.com/read/29758886/carrier-flies-of-multidrug-resistant-escherichia-coli-as-potential-dissemination-agent-in-dairy-farm-environment
#18
Taila Dos Santos Alves, Gustavo Henrique Batista Lara, Renato Pariz Maluta, Márcio Garcia Ribeiro, Domingos da Silva Leite
The life cycle of synanthropic flies and their behavior, allows them to serve as mechanical vectors of several pathogens. Given that flies can carry multidrug-resistant (MDR) bacteria, this study aimed to investigate the spread of genes of antimicrobial resistance in Escherichia coli isolated from flies collected in two dairy farms in Brazil. Besides antimicrobial resistance determinants, the presence of virulence genes related to bovine colibacillosis was also assessed. Of 94 flies collected, Musca domestica was the most frequently found in the two farms...
August 15, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29757448/quantitative-prevalence-and-characterization-of-campylobacter-from-chicken-and-duck-carcasses-from-poultry-slaughterhouses-in-south-korea
#19
Jung-Whan Chon, Soo-Kyung Lee, Yohan Yoon, Ki-Sun Yoon, Hyo-Sun Kwak, In-Sun Joo, Kun-Ho Seo
The objective of this study was to assess the quantitative prevalence, antibiotic resistance, and molecular subtyping pattern of Campylobacter isolates from chicken and duck products from poultry slaughterhouses in South Korea. A total of 240 chicken (n = 120) and duck (n = 120) carcass samples collected from 12 poultry slaughterhouses between June 2014 and February 2015 in 12 South Korean cities was tested, and 131 samples were positive for Campylobacter. Duck samples showed a higher prevalence (P < 0.05; 93 out of 120) compared to chicken samples (38 out of 120), whereas Campylobacter cell populations from positives were lower (P < 0...
May 10, 2018: Poultry Science
https://www.readbyqxmd.com/read/29757079/epidemiology-antimicrobial-resistance-and-extended-spectrum-beta-lactamase-producing-enterobacteriaceae-in-clinical-bovine-mastitis-in-tunisia
#20
Mariem Saidani, Lilia Messadi, Alya Soudani, Monia Daaloul-Jedidi, Pierre Châtre, Faten Ben Chehida, Aymen Mamlouk, Wassim Mahjoub, Jean-Yves Madec, Marisa Haenni
Bovine mastitis is a major disease in dairy cattle that causes high economic losses annually. Staphylococci, streptococci, and coliforms are among the major pathogens responsible for such infections. While data on bovine mastitis are numerous in Europe where the efficacy of farm management was monitored, those are scarce in African countries. In this study, we reported the occurrence of Escherichia coli (118/372, 31.7%) and Klebsiella pneumoniae (77/372, 20.7%), two environmental pathogens known to cause bovine mastitis...
May 14, 2018: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
keyword
keyword
18242
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"