排序方式: 共有265条查询结果,搜索用时 15 毫秒
111.
Shi ZD Karki RG Oishi S Worthy KM Bindu LK Dharmawardana PG Nicklaus MC Bottaro DP Fisher RJ Burke TR 《Bioorganic & medicinal chemistry letters》2005,15(5):1385-1388
Fluorescence labeling has become a general technique for studying the intracellular accumulation and localization of exogenously administered materials. Reported herein is a low nanomolar affinity Grb2 SH2 domain-binding antagonist that utilizes the environmentally-sensitive nitrobenzoxadiazole (NBD) fluorophore as a naphthyl replacement. This novel agent should serve as a useful tool to visualize the actions of this class of Grb2 SH2 domain-binding antagonists in whole cell systems. 相似文献
112.
Nair BM Joachimiak LA Chattopadhyay S Montano I Burns JL 《FEMS microbiology letters》2005,245(2):337-344
Burkholderia cenocepacia is a significant problem in individuals with cystic fibrosis and is a member of the B. cepacia complex of closely related antibiotic resistant bacteria. A salicylate-regulated antibiotic efflux operon has been identified in B. cenocepacia and one of its four genes, llpE, is without parallel in previously reported efflux operons. PCR amplification and sequencing of llpE from B. cepacia complex isolates demonstrated the highest prevalence in B. cenocepacia with a high degree of sequence conservation. While at least one non-synonymous mutation was identified between isolates from different genomovars, only synonymous differences were identified within the IIIA and IIIB sub-groups of B. cenocepacia. Structural modeling suggests that LlpE is a member of the alpha/beta hydrolase enzyme family. Identification of strong structural homology to hydrolases and a high degree of conservation in B. cenocepacia suggests an enzymatic function for LlpE, benefiting survival in the cystic fibrosis lung. 相似文献
113.
Bindu Patel Tim Usherwood Mark Harris Anushka Patel Kathryn Panaretto Nicholas Zwar David Peiris 《Implementation science : IS》2018,13(1):140
Background
A computerised, multifaceted quality improvement (QI) intervention for cardiovascular disease (CVD) management in Australian primary healthcare was evaluated in a cluster randomised controlled trial. The intervention was associated with improved CVD risk factor screening but there was no improvement in prescribing rates of guideline-recommended medicines. The aim of this study was to conduct a process evaluation to identify and explain the underlying mechanisms by which the intervention did and did not have an impact.Methods/design
Normalisation process theory (NPT) was used to understand factors that supported or constrained normalisation of the intervention into routine practice. A case study design was used in which six of the 30 participating intervention sites were purposively sampled to obtain a mix of size, governance, structure and performance. Multiple data sources were drawn on including trial outcome data, surveys of job satisfaction and team climate (68 staff) and in-depth interviews (19 staff). Data were primarily analysed within cases and compared with quantitative findings in other trial intervention and usual care sites.Results
We found a complex interaction between implementation processes and several contextual factors affecting uptake of the intervention. There was no clear association between team climate, job satisfaction and intervention outcomes. There were four spheres of influence that appeared to enhance or detract from normalisation of the intervention: organisational mission and history (e.g. strategic investment to promote a QI culture enhanced cognitive participation), leadership (e.g. ability to energise or demotivate others influenced coherence), team environment (e.g. synergistic activities of team members with different skill sets influenced collective action) and technical integrity of the intervention (e.g. tools that slowed computer systems limited reflective action).Discussion
Use of NPT helped explain how certain contextual factors influence the work that is done by individuals and teams when implementing a novel intervention. Although these factors do not necessarily distil into a recipe for successful uptake, they may assist system planners, intervention developers, and health professionals to better understand the trajectory that primary health care services may take when developing and engaging with QI interventions.Trial registration
ACTRN 12611000478910. Registered 08 May 2011.114.
Bindu Subhadra Dong Ho Kim Jaeseok Kim Kyungho Woo Kyung Mok Sohn Hwa-Jung Kim Kyudong Han Man Hwan Oh Chul Hee Choi 《Genes & genomics.》2018,40(6):643-655
Urinary tract infections (UTIs) are among the most common infections in humans, predominantly caused by uropathogenic Escherichia coli (UPEC). The diverse genomes of UPEC strains mostly impede disease prevention and control measures. In this study, we comparatively analyzed the whole genome sequence of a highly virulent UPEC strain, namely UPEC 26-1, which was isolated from urine sample of a patient suffering from UTI in Korea. Whole genome analysis showed that the genome consists of one circular chromosome of 5,329,753 bp, comprising 5064 protein-coding genes, 122 RNA genes (94 tRNA, 22 rRNA and 6 ncRNA genes), and 100 pseudogenes, with an average G+C content of 50.56%. In addition, we identified 8 prophage regions comprising 5 intact, 2 incomplete and 1 questionable ones and 63 genomic islands, suggesting the possibility of horizontal gene transfer in this strain. Comparative genome analysis of UPEC 26-1 with the UPEC strain CFT073 revealed an average nucleotide identity of 99.7%. The genome comparison with CFT073 provides major differences in the genome of UPEC 26-1 that would explain its increased virulence and biofilm formation. Nineteen of the total GIs were unique to UPEC 26-1 compared to CFT073 and nine of them harbored unique genes that are involved in virulence, multidrug resistance, biofilm formation and bacterial pathogenesis. The data from this study will assist in future studies of UPEC strains to develop effective control measures. 相似文献
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116.
Bandopadhyay Debashree Manish Kumar Thottethodi Subrahmanya Keshava Prasad Archana Natarajan Rita Christopher Atchayaram Nalini Parayil Sankaran Bindu Narayanappa Gayathri Muchukunte Mukunda Srinivas Bharath 《Journal of neurochemistry》2018,145(4):323-341
117.
Bindu Nanduri Leslie A. Shack Aswathy N. Rai William B. Epperson Wes Baumgartner Ty B. Schmidt Mariola J. Edelmann 《Analytical biochemistry》2016
To develop a reproducible tissue lysis method that retains enzyme function for activity-based protein profiling, we compared four different methods to obtain protein extracts from bovine lung tissue: focused ultrasonication, standard sonication, mortar & pestle method, and homogenization combined with standard sonication. Focused ultrasonication and mortar & pestle methods were sufficiently effective for activity-based profiling of deubiquitinases in tissue, and focused ultrasonication also had the fastest processing time. We used focused-ultrasonicator for subsequent activity-based proteomic analysis of deubiquitinases to test the compatibility of this method in sample preparation for activity-based chemical proteomics. 相似文献
118.
K. Lakshmana Gowda J. John Melbin S. A. Patil S. R. Bindu Rani M. K. Sanjay C. T. Shivannavar K. N. Brahmadathan 《World journal of microbiology & biotechnology》2011,27(2):319-323
A total of sixty non repetitive isolates of group A streptococci (GAS) recovered from throat cultures of asymptomatic school
children (n = 36), school children with clinical pharyngitis (n = 9) and hospital patients with clinical pharyngitis (n = 4) as well as diverse clinical samples from invasive GAS disease (n = 11) were subjected to emm typing. A total of 35 emm types including 3 new subtypes were identified among them. Types emm 12 (16.6%) and emm 71 (6.6%) were the most prevalent. The distribution of emm types identified among school children were similar to those encountered among invasive isolates but was significantly different
from those reported elsewhere in India. Our study confirms the high diversity among Indian GAS isolates as well as significant
regional differences among the distribution of emm types. 相似文献
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120.
Papalia GA Leavitt S Bynum MA Katsamba PS Wilton R Qiu H Steukers M Wang S Bindu L Phogat S Giannetti AM Ryan TE Pudlak VA Matusiewicz K Michelson KM Nowakowski A Pham-Baginski A Brooks J Tieman BC Bruce BD Vaughn M Baksh M Cho YH Wit MD Smets A Vandersmissen J Michiels L Myszka DG 《Analytical biochemistry》2006,359(1):94-105
In this benchmark study, 26 investigators were asked to characterize the kinetics and affinities of 10 sulfonamide inhibitors binding to the enzyme carbonic anhydrase II using Biacore optical biosensors. A majority of the participants collected data that could be fit to a 1:1 interaction model, but a subset of the data sets obtained from some instruments were of poor quality. The experimental errors in the k(a), k(d), and K(D) parameters determined for each of the compounds averaged 34, 24, and 37%, respectively. As expected, the greatest variation in the reported constants was observed for compounds with exceptionally weak affinity and/or fast association rates. The binding constants determined using the biosensor correlated well with solution-based titration calorimetry measurements. The results of this study provide insight into the challenges, as well as the level of experimental variation, that one would expect to observe when using Biacore technology for small molecule analyses. 相似文献