keyword
MENU ▼
Read by QxMD icon Read
search

tetracyclin

keyword
https://www.readbyqxmd.com/read/28813510/construction-of-novel-pjrd215-derived-plasmids-using-chloramphenicol-acetyltransferase-cat-gene-as-a-selection-marker-for-acidithiobacillus-caldus
#1
Rui Wang, Chunmao Lin, Jianqiang Lin, Xin Pang, Xiangmei Liu, Chengjia Zhang, Jianqun Lin, Linxu Chen
BACKGROUND: Acidithiobacillus caldus, a Gram-negative, chemolithotrophic sulfur-oxidizing bacterium, is widely applied in bioleaching. The absence of an ideal selection marker has become a major obstacle to achieve high efficiency of the gene transfer system for A. caldus. Plasmid pJRD215, widely used in Acidithiobacillus spp., has severe drawbacks in molecular manipulations and potential biosafety issues due to its mobility. Therefore, finding a new selection marker and constructing new plasmids have become an urgent and fundamental work for A...
2017: PloS One
https://www.readbyqxmd.com/read/28812723/the-unconstrained-evolution-of-fast-and-efficient-antibiotic-resistant-bacterial-genomes
#2
Carlos Reding-Roman, Mark Hewlett, Sarah Duxbury, Fabio Gori, Ivana Gudelj, Robert Beardmore
Evolutionary trajectories are constrained by trade-offs when mutations that benefit one life history trait incur fitness costs in other traits. As resistance to tetracycline antibiotics by increased efflux can be associated with an increase in length of the Escherichia coli chromosome of 10% or more, we sought costs of resistance associated with doxycycline. However, it was difficult to identify any because the growth rate (r), carrying capacity (K) and drug efflux rate of E. coli increased during evolutionary experiments where the species was exposed to doxycycline...
January 30, 2017: Nature ecology & evolution
https://www.readbyqxmd.com/read/28812009/the-bacteriological-quality-safety-and-antibiogram-of-salmonella-isolates-from-fresh-meat-in-retail-shops-of-bahir-dar-city-ethiopia
#3
Melkamnesh Azage, Mulugeta Kibret
The habit of raw meat consumption in addition to the poor hygienic standards and lack of knowledge contribute to food-borne diseases outbreaks. The objective of this research was to assess the bacterial quality and safety of fresh meat from retail Bahir Dar City, Ethiopia. A total of 30 fresh meat samples were collected from butcher shops. Standard bacteriological methods were used to isolate and enumerate bacteria. Kirby-Bauer disk diffusion method was used for antimicrobial susceptibility testing of Salmonella isolates...
2017: International journal of food science
https://www.readbyqxmd.com/read/28810864/molecular-determination-of-antimicrobial-resistance-in-escherichia-coli-isolated-from-raw-meat-in-addis-ababa-and-bishoftu-ethiopia
#4
Yohannes Equar Messele, Reta Duguma Abdi, Shimels Tikuye Yalew, Desiye Tesfaye Tegegne, Bezina Arega Emeru, Gebremeskel Mamu Werid
BACKGROUND: Consumption of meat contaminated by E. coli causes a serious illness and even death to affected individuals. Recently the emerging of antibiotic resistant foodborne E. coli poses serious public health risks worldwide. However, little is known about the antibiotic resistance profile of E. coli in Ethiopia. This study aimed to determine the prevalence and Antimicrobial resistance (AMR) status of E. coli isolated from different type of meat. METHODS: Overall 292 samples were collected from December 2015 to April 2016 from slaughterhouses to determine the prevalence and AMR of E...
August 15, 2017: Annals of Clinical Microbiology and Antimicrobials
https://www.readbyqxmd.com/read/28807915/both-14-day-hybrid-and-bismuth-quadruple-therapies-cure-most-patients-with-helicobacter-pylori-infection-in-populations-with-moderate-antibiotic-resistance-a-randomized-controlled-trial
#5
Feng-Woei Tsay, Deng-Chyang Wu, Hsien-Chung Yu, Sung-Shuo Kao, Kung-Hung Lin, Jin-Shiung Cheng, Huay-Min Wang, Wen-Chi Chen, Wei-Chih Sun, Kuo-Wang Tsai, Ping-I Hsu
BACKGROUND & AIM: Hybrid therapy is a novel two-step treatment achieving a high eradication rate for H. pylori infection. Currently, whether this new therapy achieves a higher eradication rate than bismuth quadruple therapy remains an unanswered question. The aim of this prospective, randomized, comparive study was to investigate the efficacies of 14-day hybrid therapy and bismuth quadruple therapy in the treatment of H. pylori infection.METHODS: From July 2013 to June 2015, eligible H. pylori-infected subjects were randomly assigned to receive either 14-day bismuth quadruple therapy (pantoprazole, bismuth subcitrate, tetracycline, and metronidazole for 14 days) or 14-day hybrid therapy (a 7-day dual therapy with pantoprazole plus amoxicillin, followed by a 7-day quadraple therapy with pantoprazole plus amoxicillin, clarithromycin and metronidazole)...
August 14, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28806947/conessine-as-a-novel-inhibitor-of-multidrug-efflux-pump-systems-in-pseudomonas-aeruginosa
#6
Thanyaluck Siriyong, Potjanee Srimanote, Sasitorn Chusri, Boon-Ek Yingyongnarongkul, Channarong Suaisom, Varomyalin Tipmanee, Supayang Piyawan Voravuthikunchai
BACKGROUND: Holarrhena antidysenterica has been employed as an ethnobotanical plant for the treatment of dysentery, diarrhoea, fever, and bacterial infections. Biological activities of the principle compound, conessine including anti-diarrhoea and anti-plasmodial effects were documented. Our previous study reported potency of Holarrhena antidysenterica extract and conessine as resistance modifying agents against extensively drug-resistant Acinetobacter baumannii. This study aimed to investigate (i) whether conessine, a steroidal alkaloid compound, could act as a resistance modifying agent against multidrug-resistant Pseudomonas aeruginosa, and (ii) whether MexAB-OprM efflux pump involved in the mechanism...
August 14, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28803864/the-detection-of-microorganisms-related-to-urethritis-from-the-oral-cavity-of-male-patients-with-urethritis
#7
Phuong Thi Le, Ryoichi Hamasuna, Masahiro Matsumoto, Keiichi Furubayashi, Masayuki Hatanaka, Shuichi Kawai, Takamasa Yamaguchi, Kazutaka Uehara, Norihiko Murakami, Masaru Yoshioka, Ken Nakayama, Yutaka Shiono, Keisuke Muraoka, Masahiko Suzuki, Naohiro Fujimoto, Tetsuro Matsumoto
OBJECTIVES: To investigate the presence of microorganisms related to urethritis in the oral cavity of male patients with urethritis and the efficacies of antimicrobials for urethritis on microorganisms in the oral cavity. METHODS: Ninety-two male patients with urethritis and 17 male controls participated to this study at 12 urology clinics in Japan between March 2014 and March 2015. The first voided urine (FVU) and oral wash fluid (OWF) specimens were collected from the participants...
August 10, 2017: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/28803549/comparative-gut-microbiota-and-resistome-profiling-of-intensive-care-patients-receiving-selective-digestive-tract-decontamination-and-healthy-subjects
#8
Elena Buelow, Teresita D J Bello González, Susana Fuentes, Wouter A A de Steenhuijsen Piters, Leo Lahti, Jumamurat R Bayjanov, Eline A M Majoor, Johanna C Braat, Maaike S M van Mourik, Evelien A N Oostdijk, Rob J L Willems, Marc J M Bonten, Mark W J van Passel, Hauke Smidt, Willem van Schaik
BACKGROUND: The gut microbiota is a reservoir of opportunistic pathogens that can cause life-threatening infections in critically ill patients during their stay in an intensive care unit (ICU). To suppress gut colonization with opportunistic pathogens, a prophylactic antibiotic regimen, termed "selective decontamination of the digestive tract" (SDD), is used in some countries where it improves clinical outcome in ICU patients. Yet, the impact of ICU hospitalization and SDD on the gut microbiota remains largely unknown...
August 14, 2017: Microbiome
https://www.readbyqxmd.com/read/28802174/synthesis-and-characterization-of-mno2-nio-nanocomposites-for-photocatalysis-of-tetracycline-antibiotic-and-modification-with-guanidine-for-carriers-of-caffeic-acid-phenethyl-ester-an-anticancer-drug
#9
Vinod Kumar Gupta, Ali Fakhri, Shilpi Agarwal, Elham Ahmadi, Pedram Afshar Nejad
In the present studies, modified NiO nanoparticles and MnO2/NiO nanocomposites with guanidine were synthesized by anchoring method for carriers of anticancer drug "Caffeic acid phenethyl ester". The prepared nanocomposites were characterized by using Scanning Electron Microscopy, Raman and Fourier transform infrared spectroscopy, X-ray diffraction, Vibrating sample magnetometer. The results from XRD indicated that the crystalline size of NiO nanoparticles and MnO2/NiO nanocomposites are 12 and 15nm, respectively...
August 6, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28801906/the-tetracycline-responsive-system
#10
Nasim Yousaf, David Gould
Constitutive gene expression is not always the appropriate expression system because the unphysiological levels of expressed protein could be detrimental in studies examining biological roles of proteins, or continued expression may be unnecessary after therapeutic effects have been achieved in gene therapy . We have utilized pharmacologically regulated gene expression systems to achieve fine control of gene expression levels which facilitate research in basic biology and translates to use in experimental gene therapy studies...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28800685/occurrence-and-ecological-hazard-assessment-of-selected-antibiotics-in-the-surface-waters-in-and-around-lake-honghu-china
#11
Zhi Wang, Yun Du, Chao Yang, Xi Liu, Junqian Zhang, Enhua Li, Qing Zhang, Xuelei Wang
The occurrence and temporal-spatial distributions of 13 antibiotics (tetracyclines, sulfonamides, and fluoroquinolones) in the water of a high-intensity aquaculture lake, Honghu Lake, and its associated river network and ponds were investigated. Tetracycline, oxytetracycline, chlortetracycline, and sulfadiazine are the four dominant antibiotics in this region, with maximum and median concentrations of 1454.8 and 304.8ng/L, 2796.6 and 161.9ng/L, 1431.3 and 349.9ng/L, and 499.5 and 106.5ng/L, respectively. The median concentrations of the other nine antibiotics are lower than 57...
August 7, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28800411/antimicrobial-resistance-and-resistance-genes-in-salmonella-strains-isolated-from-broiler-chickens-along-the-slaughtering-process-in-china
#12
Yuanting Zhu, Haimei Lai, Likou Zou, Sheng Yin, Chengtao Wang, Xinfeng Han, Xiaolong Xia, Kaidi Hu, Li He, Kang Zhou, Shujuan Chen, Xiaolin Ao, Shuliang Liu
A total of 189 Salmonella isolates were recovered from 627 samples which were collected from cecal contents of broilers, chicken carcasses, chicken meat after cutting step and frozen broiler chicken products along the slaughtering process at a slaughterhouse in Sichuan province of China. The Salmonella isolates were subjected to antimicrobial susceptibility testing to 10 categories of antimicrobial agents using the Kirby-Bauer disk diffusion method. Those antibiotics-resistant isolates were further investigated for the occurrence of resistance genes, the presence of class 1 integron as well as the associated gene cassettes, and the mutations within the gyrA and parC genes...
August 1, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/28799833/plasmid-mediated-colistin-resistance-gene-mcr-1-in-an-escherichia-coli-st10-bloodstream-isolate-in-the-sultanate-of-oman
#13
Jalila Mohsin, Tibor Pál, Jorgen Eskild Petersen, Dania Darwish, Akela Ghazawi, Tanveer Ashraf, Agnes Sonnevend
AIMS: To identify plasmid-mediated colistin resistance in clinical Enterobacteriaceae isolates in Oman, where this resistance mechanism has not been encountered yet. MATERIALS/METHODS: Twenty-two colistin-resistant Enterobacteriaceae clinical isolates collected between July 2014 and June 2016 in a tertiary care hospital in Muscat were screened by PCR for the mcr-1 and mcr-2 genes. The strain identified as mcr-1 positive was genotyped and its antibiotic susceptibility was established...
August 11, 2017: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/28799224/genomic-insights-into-the-pathogenicity-and-environmental-adaptability-of-enterococcus-hirae-r17-isolated-from-pork-offered-for-retail-sale
#14
Zixin Peng, Menghan Li, Wei Wang, Hongtao Liu, Séamus Fanning, Yujie Hu, Jianzhong Zhang, Fengqin Li
Genetic information about Enterococcus hirae is limited, a feature that has compromised our understanding of these clinically challenging bacteria. In this study, comparative analysis was performed of E. hirae R17, a daptomycin-resistant strain isolated from pork purchased from a retail market in Beijing, China, and three other enterococcal genomes (Enterococcus faecium DO, Enterococcus faecalis V583, and E. hirae ATCC(™) 9790). Some 1,412 genes were identified that represented the core genome together with an additional 139 genes that were specific to E...
August 10, 2017: MicrobiologyOpen
https://www.readbyqxmd.com/read/28798382/chronic-low-level-expression-of-hiv-1-tat-promotes-a-neurodegenerative-phenotype-with-aging
#15
Alex M Dickens, Seung Wan Yoo, Alfred C Chin, Jiadi Xu, Tory P Johnson, Amanda L Trout, Kurt F Hauser, Norman J Haughey
The widespread use of combinational antiretroviral therapies (cART) in developed countries has changed the course of Human Immunodeficiency Virus (HIV) infection from an almost universally fatal disease to a chronic infection for the majority of individuals. Although cART has reduced the severity of neurological damage in HIV-infected individuals, the likelihood of cognitive impairment increases with age, and duration of infection. As cART does not suppress the expression of HIV non-structural proteins, it has been proposed that a constitutive production of HIV regulatory proteins in infected brain cells may contribute to neurological damage...
August 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28797073/assessment-of-veterinary-drugs-in-plants-using-pharmacokinetic-approaches-the-absorption-distribution-and-elimination-of-tetracycline-and-sulfamethoxazole-in-ephemeral-vegetables
#16
Hui-Ru Chen, Tirawat Rairat, Shih-Hurng Loh, Yu-Chieh Wu, Thomas W Vickroy, Chi-Chung Chou
The present study was carried out to demonstrate novel use of pharmacokinetic approaches to characterize drug behaviors/movements in the vegetables with implications to food safety. The absorption, distribution, metabolism and most importantly, the elimination of tetracycline (TC) and sulfamethoxazole (SMX) in edible plants Brassica rapa chinensis and Ipomoea aquatica grown hydroponically were demonstrated and studied using non-compartmental pharmacokinetic analysis. The results revealed drug-dependent and vegetable-dependent pharmacokinetic differences and indicated that ephemeral vegetables could have high capacity accumulating antibiotics (up to 160 μg g-1 for TC and 38 μg g-1 for SMX) within hours...
2017: PloS One
https://www.readbyqxmd.com/read/28796905/aerobic-uterine-isolates-and-antimicrobial-susceptibility-in-mares-with-post-partum-metritis
#17
M S Ferrer, R Palomares
BACKGROUND: The potential for life-threatening complications of metritis requires prompt initiation of antimicrobial treatment, often before microbiological test results are reported. However, published studies to guide first-line antibiotic selection are scarce. OBJECTIVES: To report the most frequent bacterial species, antimicrobial susceptibility and prevalence of multidrug resistance (MDR) in cases of equine metritis. STUDY DESIGN: Retrospective analysis of uterine bacterial culture and antimicrobial susceptibility test (AST) results from mares with metritis...
August 10, 2017: Equine Veterinary Journal
https://www.readbyqxmd.com/read/28795656/development-and-validation-of-multi-residue-analysis-for-tetracycline-antibiotics-in-feed-by-high-performance-liquid-chromatography-coupled-to-mass-spectrometry
#18
Ewelina Patyra, Krzysztof Kwiatek
A new multi-residue method for the analysis of the tetracycline antibiotics oxytetracycline, tetracycline, chlortetracycline, and doxycycline was developed and validated for animal feed. After extraction with 0.1M Na2EDTA-McIlvaine buffer (pH 4), the samples were centrifuged, purified by SPE (Strata-X-CW cartridges) and analyzed by high-performance liquid chromatography coupled to mass spectrometry. Validation of the method was performed according to the guidelines indicated in Commission Decision 2002/657/EC...
August 10, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28795513/the-economic-implications-of-sylvatic-rabies-eradication-in-italy
#19
S Sartore, P Mulatti, S Trestini, M Lorenzetto, L Gagliazzo, S Marangon, L Bonfanti
After more than 10 years of absence, sylvatic rabies re-appeared in Italy in 2008. To prevent disease spread, three oral rabies vaccination (ORV) campaigns targeting red foxes were performed through manual distribution of vaccine baits between January and September 2009. As these campaigns proved unsuccessful, at the end of December 2009, baits started being distributed using helicopters, allowing uniform coverage of larger areas in a shorter time period. From winter 2009 to autumn 2016, a total of 15 ORV campaigns (four emergency, four regular and seven preventive ORV) were implemented through aerial distribution of baits...
August 9, 2017: Zoonoses and Public Health
https://www.readbyqxmd.com/read/28795034/chemical-pleurodesis-using-doxycycline-and-viscum-album-extract
#20
Kyung Sub Song, DongYoon Keum, Jae Bum Kim
BACKGROUND: In chemical pleurodesis for managing pulmonary air leak, tetracycline derivatives are commonly used, and their effectiveness has been established in many studies. Recently, a Viscum album extract was used in chemical pleurodesis. We compared the effects of V. album with those of a tetracycline derivative (doxycycline) to demonstrate the therapeutic effectiveness of the V. album extract in chemical pleurodesis for managing pulmonary air leak. METHODS: Between October 2010 and October 2016, chemical pleurodesis was performed using doxycycline in 40 patients and the V...
August 2017: Korean Journal of Thoracic and Cardiovascular Surgery
keyword
keyword
97395
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"