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https://www.readbyqxmd.com/read/27903584/src-independent-erk-signaling-through-the-%C3%AE-3-isoform-of-na-k-atpase
#1
Namrata Madan, Yunhui Xu, Qiming Duan, Moumita Banerjee, Isabel Larre, Sandrine V Pierre, Zijian Xie
The Na/K-ATPase α1 polypeptide supports both ion pumping and signaling functions. The Na/K-ATPase α3 polypeptide differs from α1 in both its primary structure and its tissue distribution. Alpha3 expression seems particularly important in neurons, and recent clinical evidence supports a unique role of this isoform in normal brain function. The nature of this specific role of α3 has remained elusive, because the ubiquitous presence of α1 has hindered efforts to characterize α3-specific functions in mammalian cell systems...
November 30, 2016: American Journal of Physiology. Cell Physiology
https://www.readbyqxmd.com/read/27903540/greater-volume-but-not-higher-density-of-abdominal-aortic-calcium-is-associated-with-increased-cardiovascular-disease-risk-mesa-multi-ethnic-study-of-atherosclerosis
#2
Nketi I Forbang, Erin D Michos, Robyn L McClelland, Rosemay A Remigio-Baker, Matthew A Allison, Veit Sandfort, Joachim H Ix, Isac Thomas, Dena E Rifkin, Michael H Criqui
BACKGROUND: Abdominal aortic calcium (AAC) and coronary artery calcium (CAC) independently and similarly predict cardiovascular disease (CVD) events. The standard AAC and CAC score, the Agatston method, upweights for greater calcium density, thereby modeling higher calcium density as a CVD hazard. METHODS AND RESULTS: Computed tomography scans were used to measure AAC and CAC volume and density in a multiethnic cohort of community-dwelling individuals, and Cox proportional hazard was used to determine their independent association with incident coronary heart disease (CHD, defined as myocardial infarction, resuscitated cardiac arrest, or CHD death), cardiovascular disease (CVD, defined as CHD plus stroke and stroke death), and all-cause mortality...
November 2016: Circulation. Cardiovascular Imaging
https://www.readbyqxmd.com/read/27902429/plasmid-mediated-quinolone-resistance-determinants-among-gram-negative-bacteraemia-isolates-a-hidden-threat
#3
Athanasios Margaritis, Irene Galani, Marianthi Chatzikonstantinou, George Petrikkos, Maria Souli
The aim of the study was to investigate the prevalence of PMQR genes in an unselected collection of bloodstream isolates recovered over an 18-month period in a laboratory affiliated to a University Hospital in Athens, Greece and to assess their impact on the in vitro activity of ciprofloxacin and levofloxacin. Eight PMQR genes were screened by PCR and sequencing. All PMQR-positive isolates were submitted to isoelectric focusing for β-lactamase detection, conjugation or transformation, time-kill assays, MPC and inoculum effect evaluation...
November 28, 2016: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/27902368/coagulase-negative-staphylococci-pathogenesis-occurrence-of-antibiotic-resistance-genes-and-in-vitro-effects-of-antimicrobial-agents-on-biofilm-growing-bacteria
#4
Ewa Szczuka, Lucyna Jabłońska, Adam Kaznowski
Coagulase-negative staphylococci (CoNS) are opportunistic pathogens that particularly cause infections in patients with implanted medical devices. The present research was performed to study the virulence potential of 53 clinical isolates of Staphylococcus capitis, Staphylococcus auricularis, Staphylococcus lugdunensis, Staphylococcus simulans, Staphylococcus cohnii, and Staphylococcus caprae. All clinical strains were clonally unrelated. Isolates carried genes encoding resistance to β-lactam (mecA) (15%), aminoglycosides aac(6')/aph(2'') (11%), aph (3')-IIIa (15%), ant(4')-Ia (19%) and MLSB erm(A) (4%), erm(B) (13%), erm(C) (41%), msr(A) (11%) antibiotics...
October 19, 2016: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/27900962/association-of-conjunctival-and-corneal-calcification-with-vascular-calcification-among-hepatitis-c-seropositive-hemodialysis-patients
#5
Khaled AbouSeif, Dawlat Sany, Yasser Elshahawy, Ayman Seddik, Khedr Rahman, Moustapha Gaber
Disorders associated with the hepatitis C virus (HCV) have been reported including cardiovascular, metabolic, and central nervous system diseases. Since chronic HCV infections may be curable, their identification as causal contributors to cardiovascular risk could offer new perspectives in the prevention of cardiovascular disease. The aim of this study is to investigate the association between HCV and aortic arch calcification (AAC) and corneal and conjunctival calcification (CCC) in maintenance hemodialysis (MHD) patients; further, we assessed the correlation of CCC with vascular calcification...
November 2016: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/27899921/high-prevalence-of-%C3%AE-lactamase-and-plasmid-mediated-quinolone-resistance-genes-in-extended-spectrum-cephalosporin-resistant-escherichia-coli-from-dogs-in-shaanxi-china
#6
Xiaoqiang Liu, Haixia Liu, Yinqian Li, Caiju Hao
Objective: The aim of this study was to investigate the occurrence and molecular characterization of extended-spectrum β-lactamases (ESBL), plasmid-mediated AmpC β-lactamase (pAmpC) and carbapenemases as well as plasmid-mediated quinolone-resistant (PMQR) among extended-spectrum cephalosporin-resistant (ESC-R) Escherichia coli from dogs in Shaanxi province in China. Methods: A total of 40 ESC-R Escherichia coli selected from 165 Extraintestinal pathogenic E. coli (ExPEC) isolated from dogs were screened and characterized for the genes encoding for the ESBLs, pAmpC, carbapenemases and PMQR genes by PCR and sequencing...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27889879/plasmid-mediated-quinolone-resistance-in-enterobacteriaceae-a-systematic-review-with-a-focus-on-mediterranean-countries
#7
REVIEW
B Yanat, J-M Rodríguez-Martínez, A Touati
Quinolones are a family of synthetic broad-spectrum antimicrobial drugs. These molecules have been widely prescribed to treat various infectious diseases and have been classified into several generations based on their spectrum of activity. Quinolones inhibit bacterial DNA synthesis by interfering with the action of DNA gyrase and topoisomerase IV. Mutations in the genes encoding these targets are the most common mechanisms of high-level fluoroquinolone resistance. Moreover, three mechanisms for plasmid-mediated quinolone resistance (PMQR) have been discovered since 1998 and include Qnr proteins, the aminoglycoside acetyltransferase AAC(6')-Ib-cr, and plasmid-mediated efflux pumps QepA and OqxAB...
November 26, 2016: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/27889248/comprehensive-study-to-investigate-the-role-of-various-aminoglycoside-resistance-mechanisms-in-clinical-isolates-of-acinetobacter-baumannii
#8
Vajihe Sheikhalizadeh, Alka Hasani, Mohammad Ahangarzadeh Rezaee, Mohammad Rahmati-Yamchi, Akbar Hasani, Reza Ghotaslou, Hamid Reza Goli
Therapeutic resistance towards most of the current treatment regime by Acinetobacter baumannii has reduced the prescribing antibiotic pattern and option is being re-shifted towards more toxic agents including aminoglycosides. The present investigation aimed at to study various mechanisms towards aminoglycoside non-susceptibility in clinical isolates of A. baumannii. The bacteria were subjected to genetic basis assessment for the presence of aminoglycoside modifying enzymes (AME), 16S rRNA methylase encoding genes and relative expression of AdeABC and AbeM efflux pumps in relation to their susceptibility to five aminoglycosides...
November 23, 2016: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/27883021/identification-of-aberrant-trna-halves-expression-patterns-in-clear-cell-renal-cell-carcinoma
#9
Malin Nientiedt, Mario Deng, Doris Schmidt, Sven Perner, Stefan C Müller, Jörg Ellinger
Small non-coding RNAs (sncRNA; <200 nt) regulate various cellular processes and modify gene expression. Under nutritional, biological or physiochemical stress some mature sncRNAs (e.g. tRNAs) are cleaved into halves (30-50 nt) and smaller fragments (18-22 nt); the significance and functional role of these tRNA fragments is unknown, but their existence has been linked to carcinogenesis. We used small RNA sequencing to determine the expression of sncRNAs. Subsequently the findings were validated for miR-122-5p, miR-142-3p and 5'tRNA4-Val-AAC using qPCR...
November 24, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27874309/abundance-and-characterization-of-perfect-microsatellites-on-the-cattle-y-chromosome
#10
Zhi-Jie Ma
Microsatellites or simple sequence repeats (SSRs) are found in most organisms and play an important role in genomic organization and function. To characterize the abundance of SSRs (1-6 base-pairs [bp]) on the cattle Y chromsome, the relative frequency and density of perfect or uninterrupted SSRs based on the published Y chromosome sequence were examined. A total of 17,273 perfect SSRs were found, with total length of 324.78 kb, indicating that approximately 0.75% of the cattle Y chromosome sequence (43.30 Mb) comprises perfect SSRs, with an average length of 18...
November 22, 2016: Animal Biotechnology
https://www.readbyqxmd.com/read/27870554/occurrence-of-extended-spectrum-%C3%AE-lactamases-plasmid-mediated-quinolone-resistance-and-disinfectant-resistance-genes-in-escherichia-coli-isolated-from-ready-to-eat-meat-products
#11
Lili Li, Lei Ye, Sofie Kromann, Hecheng Meng
There are growing concerns about the coselection of resistance against antibiotics and disinfectants in bacterial pathogens. The aim of this study was to characterize the antimicrobial susceptibility profiles, the prevalence of extended-spectrum β-lactamases (ESBLs), plasmid-mediated quinolone resistance genes (PMQRs), and quaternary ammonium compound resistance genes (QACs) in Escherichia coli isolated from ready-to-eat (RTE) meat products obtained in Guangzhou, China, and to determine whether these genes were colocalized in the isolates...
November 21, 2016: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/27868434/communication-aid-requirements-of-intensive-care-unit-patients-with-transient-speech-loss
#12
Mohammad H Mobasheri, Dominic King, Simon Judge, Faizan Arshad, Marius Larsen, Zahra Safarfashandi, Hemal Shah, Anna Trepekli, Sanjay Trikha, Diamantis Xylas, Stephen J Brett, Ara Darzi
Alert and transiently nonvocal intensive care unit (ICU) patients are dependent on augmentative and alternative communication (AAC). Unfortunately, the literature demonstrates that existent AAC devices have not been widely adopted, and unaided methods are often the primary modalities used despite being insufficient, and frustrating. We present the results of a qualitative semi-structured interview study with 8 ex-ICU patients, 4 ICU patient relatives, and 6 ICU staff, exploring their AAC needs and requirements...
November 20, 2016: Augmentative and Alternative Communication: AAC
https://www.readbyqxmd.com/read/27866415/teachers-perceptions-of-implementation-of-aided-aac-to-support-expressive-communication-in-south-african-special-schools-a-pilot-investigation
#13
Kerstin M Tönsing, Shakila Dada
Although the provision of assistive technology for students with disabilities has been mandated in South African education policy documents, limited data are available on the implementation of aided augmentative and alternative communication (AAC) in classrooms. This pilot investigation used a concurrent mixed-methods survey design to determine the extent to which aided AAC was implemented to foster students' expressive communication in preschool to Grade 3 classrooms in special schools from six urban school districts in the Gauteng (the smallest, most affluent and most densely populated of the nine South African provinces), and also obtained teachers' perceptions of this process...
November 20, 2016: Augmentative and Alternative Communication: AAC
https://www.readbyqxmd.com/read/27859010/bevacizumab-combined-with-capecitabine-and-oxaliplatin-in-patients-with-advanced-adenocarcinoma-of-the-small-bowel-or-ampulla-of-vater-a-single-center-open-label-phase-2-study
#14
Pat Gulhati, Kanwal Raghav, Rachna T Shroff, Gauri R Varadhachary, Scott Kopetz, Milind Javle, Wei Qiao, Huamin Wang, Jeffrey Morris, Robert A Wolff, Michael J Overman
BACKGROUND: Capecitabine with oxaliplatin (CAPOX) has previously demonstrated clinical activity in patients with small bowel adenocarcinoma (SBA) and ampullary adenocarcinoma (AAC). Herein, the authors conducted a phase 2 trial to evaluate the benefit of adding bevacizumab to CAPOX. METHODS: In this phase 2, single-arm, single-center, open-label study, patients aged ≥18 years with untreated, advanced SBA or AAC were recruited. Patients received capecitabine at a dose of 750 mg/m(2) orally twice daily on days 1 to 14, oxaliplatin at a dose of 130 mg/m(2) intravenously on day 1, and bevacizumab at a dose of 7...
November 14, 2016: Cancer
https://www.readbyqxmd.com/read/27858324/a-bifunctional-aminoglycoside-acetyltransferase-phosphotransferase-conferring-tobramycin-resistance-provides-an-efficient-selectable-marker-for-plastid-transformation
#15
Iman Tabatabaei, Stephanie Ruf, Ralph Bock
A new selectable marker gene for stable transformation of the plastid genome was developed that is similarly efficient as the aadA, and produces no background of spontaneous resistance mutants. More than 25 years after its development for Chlamydomonas and tobacco, the transformation of the chloroplast genome still represents a challenging technology that is available only in a handful of species. The vast majority of chloroplast transformation experiments conducted thus far have relied on a single selectable marker gene, the spectinomycin resistance gene aadA...
November 17, 2016: Plant Molecular Biology
https://www.readbyqxmd.com/read/27857983/assessment-of-configurations-and-chemistries-of-bridged-nucleic-acids-containing-oligomers-as-external-guide-sequences-a-methodology-for-inhibition-of-expression-of-antibiotic-resistance-genes
#16
Alexis Jackson, Saumya Jani, Carol Davies Sala, Alfonso J C Soler-Bistué, Angeles Zorreguieta, Marcelo E Tolmasky
EGSs (external guide sequences) are short antisense oligoribonucleotides that elicit RNase P-mediated cleavage of a target mRNA, which results in inhibition of gene expression. EGS technology is used to inhibit expression of a wide variety of genes, a strategy that may lead to development of novel treatments of numerous diseases, including multidrug-resistant bacterial and viral infections. Successful development of EGS technology depends on finding nucleotide analogs that resist degradation by nucleases present in biological fluids and the environment but still elicit RNase P-mediated degradation when forming a duplex with a target mRNA...
March 2016: Biology Methods and Protocols
https://www.readbyqxmd.com/read/27857893/a-study-on-the-aac-6-1-lb-cr-gene-prevalence-among-ciprofloxacin-resistant-strains-of-uropathogenic-enterobacteriaceae
#17
Nirupa Soundararajan, Priyadarshini Shanmugam, Caroline Devanbu, Shameem Banu Abdul Sattar
INTRODUCTION: Urinary tract infections (UTIs) are very common. Indiscriminate use of antibiotics has led to the development of resistance to most of the commonly used antibiotics including quinolones. AIM: This study aimed to find out the prevalence of ciprofloxacin resistance among the uropathogenic Enterobacteriaceae, to determine the virulence factors of these isolates, and to detect the aac-(6(1))-lb-cr gene among those isolates with minimal inhibitory concentrations (MICs) of ciprofloxacin >256 mcg/ml...
October 2016: International Journal of Applied and Basic Medical Research
https://www.readbyqxmd.com/read/27855650/trimetazidine-attenuates-pressure-overload-induced-early-cardiac-energy-dysfunction-via-regulation-of-neuropeptide-y-system-in-a-rat-model-of-abdominal-aortic-constriction
#18
Ailan Chen, Wanglin Li, Xinyu Chen, Yuechun Shen, Wenjun Dai, Qi Dong, Xinchun Li, Caiwen Ou, Minsheng Chen
BACKGROUND: Metabolism remodeling has been recognized as an early event following cardiac pressure overload. However, its temporal association with ventricular hypertrophy has not been confirmed. Moreover, whether trimetazidine could favorably affect this process also needs to be determined. The aim of the study was to explore the temporal changes of myocardial metabolism remodeling following pressure-overload induced ventricular hypertrophy and the potential favorable effect of trimetazidine on myocardial metabolism remodeling...
November 17, 2016: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/27847506/low-concentration-ciprofloxacin-selects-plasmid-mediated-quinolone-resistance-encoding-genes-and-affects-bacterial-taxa-in-soil-containing-manure
#19
Ting Huang, Ying Xu, Jie Zeng, Dong-Hao Zhao, Liang Li, Xiao-Ping Liao, Ya-Hong Liu, Jian Sun
The spread of antimicrobial resistance in environment is promoted at least in part by the inappropriate use of antibiotics in animals and humans. The present study was designed to investigate the impact of different concentrations of ciprofloxacin in soil containing manure on the development of plasmid-mediated quinolone resistance (PMQR) - encoding genes and the abundance of soil bacterial communities. For these studies, high-throughput next-generation sequencing of 16S rRNA, real-time polymerase chain reaction and standard microbiologic culture methods were utilized...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27837411/first-study-on-characterization-of-virulence-and-antibiotic-resistance-genes-in-verotoxigenic-and-enterotoxigenic-e-coli-isolated-from-raw-milk-and-unpasteurized-traditional-cheeses-in-romania
#20
Alexandra Tabaran, Marian Mihaiu, Flaviu Tăbăran, Liora Colobatiu, Oana Reget, Mihai Marian Borzan, Sorin Daniel Dan
The study focused on the incidence of enterotoxigenic Escherichia coli (ETEC) and verotoxigenic E. coli (VTEC) in raw milk and traditional dairy cheeses marketed in Romania, characterizing the virulence and antibiotic resistance genes of these isolates. One hundred and twenty samples of raw milk and 80 samples of unpasteurized telemy cheese were collected and cultured according to the international standard protocol. All the characteristic E. coli cultures were analyzed for the presence of STa, STb, LT, stx1, and stx2 toxicity genes...
November 11, 2016: Folia Microbiologica
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