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https://www.readbyqxmd.com/read/28730475/characterization-of-ligand-binding-to-pseudokinases-using-a-thermal-shift-assay
#1
Isabelle S Lucet, James M Murphy
The protocol herein describes a robust and proven method for the measurement of pseudokinase-ligand interaction using a fluorescence-based thermal shift assay (TSA). Pseudokinases are kinase-like proteins that have recently emerged as crucial regulatory modules of signal transduction pathways and may well represent a novel class of drug targets. However, unlike kinases, the regulatory activity of pseudokinases is mainly conferred through protein-protein interactions. Understanding the mechanisms that underlie pseudokinase conformational changes through ligand binding and how such conformational changes can tune signaling pathways is a necessary step to unravel their biological functions...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28723412/identification-of-a-viroid-like-rna-in-a-lychee-transcriptome-shotgun-assembly
#2
Jihong Jiang, Zhixiang Zhang, Bing Hu, Guibing Hu, Hongqing Wang, Chantal Faure, Armelle Marais, Thierry Candresse, Shifang Li
In the course of a systematic screen of plant transcriptomic data, the sequence of a novel viroid-like RNA was identified in four contigs in a recent Transcriptome Shotgun Assembly (TSA) from lychee in China. Portions of this sequence are closely related to the central conserved region (CCR) and terminal conserved region (TCR) present in members of the genus Apscaviroid, sequences that are important criteria for viroid classification. RT-PCR with two divergent adjacent primers amplified the full 304 nucleotide sequence of this viroid-like RNA which can be folded into the rod-like secondary structure that is a typical feature of viroids in the family Pospiviroidae...
July 16, 2017: Virus Research
https://www.readbyqxmd.com/read/28715105/a-simulation-based-approach-to-measuring-team-situational-awareness-in-emergency-medicine-a-multicenter-observational-study
#3
Elizabeth D Rosenman, Aurora J Dixon, Jessica M Webb, Sarah Brolliar, Simon J Golden, Kerin A Jones, Sachita Shah, James A Grand, Steve W J Kozlowski, Georgia T Chao, Rosemarie Fernandez
OBJECTIVES: Team situational awareness (TSA) is critical for effective teamwork and supports dynamic decision-making in unpredictable, time-pressured situations. Simulation provides a platform for developing and assessing TSA; but these efforts are limited by suboptimal measurement approaches. The objective of this study was to develop and evaluate a novel approach to TSA measurement in interprofessional emergency medicine teams. METHODS: We performed a multicenter, prospective, simulation-based observational study to evaluate an approach to TSA measurement...
July 17, 2017: Academic Emergency Medicine: Official Journal of the Society for Academic Emergency Medicine
https://www.readbyqxmd.com/read/28713892/trichostatin%C3%A2-a-induces-bladder-cancer-cell-death-via-intrinsic-apoptosis-at-the-early%C3%A2-phase-and-sp1%C3%A2-survivin-downregulation-at-the-late%C3%A2-phase-of-treatment
#4
Shou-Chieh Wang, Shou-Tsung Wang, Hung-Te Liu, Xiang-Yu Wang, She-Ching Wu, Lei-Chin Chen, Yi-Wen Liu
Histone deacetylase (HDAC) inhibitors have been widely shown to result in cancer cell death. The present study investigated the mechanisms underlying the antitumor effects of the phytochemical trichostatin A (TSA), a classic pan-HDAC inhibitor, in 5,637 urinary bladder cancer cells. It was found that TSA caused cell cycle arrest at the G2/M and G1 phase accompanied by reduced expression of cyclin D1 and upregulated induction of p21. In addition, TSA induced morphological changes, reduced cell viability and apoptotic cell death in 5,637 cells through caspase-3 activation followed by PARP cleavage...
July 6, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28708580/lack-of-association-between-nat2-polymorphism-and-prostate-cancer-risk-a-meta-analysis-and-trial-sequential-analysis
#5
Feng Wang, Zhiqiang Qin, Shuhui Si, Jingyuan Tang, Lingyan Xu, Haoxiang Xu, Ran Li, Peng Han, Haiwei Yang
Previous studies have investigated the association between NAT2 polymorphism and the risk of prostate cancer (PCa). However, the findings from these studies remained inconsistent. Hence, we performed a meta-analysis to provide a more reliable conclusion about such associations. In the present meta-analysis, 13 independent case-control studies were included with a total of 14,469 PCa patients and 10,689 controls. All relevant studies published were searched in the databates PubMed, EMBASE, and Web of Science, till March 1st, 2017...
July 5, 2017: Oncotarget
https://www.readbyqxmd.com/read/28706430/case-of-pediatric-traditional-serrated-adenoma-resected-via-endoscopic-submucosal-dissection
#6
Sonoko Kondo, Hirohito Mori, Noriko Nishiyama, Takeo Kondo, Ryuichi Shimono, Hitoshi Okada, Takashi Kusaka
Traditional serrated adenoma (TSA) is a type of serrated polyp of the colorectum and is thought to be a precancerous lesion. There are three types of serrated polyps, namely, hyperplastic polyps, sessile serrated adenomas/polyps, and TSAs. TSA is the least common of the three types and accounts for about 5% of serrated polyps. Here we report a pediatric case of TSA that was successfully resected by endoscopic submucosal dissection (ESD). This rare case report describes a pediatric patient with no family history of colonic polyp who was admitted to our hospital with hematochezia...
June 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28706157/a-bayesian-pick-the-winner-design-in-a-randomized-phase-ii-clinical-trial
#7
Dung-Tsa Chen, Po-Yu Huang, Hui-Yi Lin, Alberto A Chiappori, Dmitry I Gabrilovich, Eric B Haura, Scott J Antonia, Jhanelle E Gray
PURPOSE: Many phase II clinical trials evaluate unique experimental drugs/combinations through multi-arm design to expedite the screening process (early termination of ineffective drugs) and to identify the most effective drug (pick the winner) to warrant a phase III trial. Various statistical approaches have been developed for the pick-the-winner design but have been criticized for lack of objective comparison among the drug agents. METHODS: We developed a Bayesian pick-the-winner design by integrating a Bayesian posterior probability with Simon two-stage design in a randomized two-arm clinical trial...
July 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/28701956/administration-of-a-histone-deacetylase-inhibitor-into-the-basolateral-amygdala-enhances-memory-consolidation-delays-extinction-and-increases-hippocampal-bdnf-levels
#8
Fernanda E Valiati, Mailton Vasconcelos, Martina Lichtenfels, Fernanda S Petry, Rosa M M de Almeida, Gilberto Schwartsmann, Nadja Schröder, Caroline B de Farias, Rafael Roesler
Gene expression related to the formation and modification of memories is regulated epigenetically by chromatin remodeling through histone acetylation. Memory formation and extinction can be enhanced by treatment with inhibitors of histone deacetylases (HDACs). The basolateral amygdala (BLA) is a brain area critically involved in regulating memory for inhibitory avoidance (IA). However, previous studies have not examined the effects of HDAC inhibition in the amygdala on memory for IA. Here we show that infusion of an HDAC inhibitor (HDACi), trichostatin A (TSA), into the BLA, enhanced consolidation of IA memory in rats when given at 1...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28700646/efficacy-and-safety-of-micafungin-versus-extensive-azoles-in-the-prevention-and-treatment-of-invasive-fungal-infections-for-neutropenia-patients-with-hematological-malignancies-a-meta-analysis-of-randomized-controlled-trials
#9
Cho-Hao Lee, Jung-Chung Lin, Ching-Liang Ho, Min Sun, Wel-Ting Yen, Chin Lin
BACKGROUND: Current studies that compare the efficacy and safety of micafungin (MCFG) with that of triazoles for the prophylaxis and treatment of invasive fungal infections (IFIs) demonstrate a lack of sufficient evidence and yield conflicting results. To compare the efficacy and safety of MCFG and triazoles in the prevention and treatment of IFIs, we conducted a meta-analysis and trial sequential analysis (TSA). METHODS: For the meta-analysis, we systematically searched the databases of PubMed, Embase and Cochrane Central Register of Controlled Trials and relevant database articles for randomized controlled studies published through November 2016...
2017: PloS One
https://www.readbyqxmd.com/read/28693431/the-attenuation-of-renal-fibrosis-by-histone-deacetylase-inhibitors-is-associated-with-the-plasticity-of-foxp3-il-17-t-cells
#10
Wen-Pyng Wu, Yi-Giien Tsai, Tze-Yi Lin, Ming-Ju Wu, Ching-Yuang Lin
BACKGROUND: The histone deacetylase (HDAC) inhibitor, which has potential effects on epigenetic modifications, had been reported to attenuate renal fibrosis. CD4(+) forkhead box P3 (FOXP3)(+) T regulatory (Treg) cells may be converted to inflammation-associated T helper 17 cells (Th17) with tissue fibrosis properties. The association between FOXP3(+)IL-17(+) T cells and the attenuation of renal fibrosis by the HDAC inhibitor is not clear. METHODS: This study evaluated the roles of the HDAC inhibitor, Treg cells and their differentiation into Th17 cells, which aggravate chronic inflammation and renal fibrosis in a unilateral ureteral obstruction (UUO) mouse model...
July 10, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28690459/functional-outcomes-of-modular-conversion-of-hemiarthroplasty-or-total-to-reverse-total-shoulder-arthroplasty
#11
Phillip N Williams, Samir K Trehan, Nicholas Tsouris, Joshua S Dines, David M Dines, Edward V Craig, Lawrence V Gulotta, Russell F Warren
BACKGROUND: The advent of modular shoulder arthroplasty systems has allowed the conversion of hemiarthroplasty or total shoulder arthroplasty to reverse total shoulder arthroplasty (RTSA) without removing a well-fixed stem. QUESTIONS/PURPOSES: To determine the feasibility, functional outcome, and complication profile of RTSA modular conversion. METHODS: A prospective shoulder arthroplasty registry was queried for consecutive patients scheduled for a modular conversion from January 1, 2007, to April 1, 2015...
July 2017: HSS Journal: the Musculoskeletal Journal of Hospital for Special Surgery
https://www.readbyqxmd.com/read/28689309/the-influence-of-gender-on-early-adverse-events-hospital-charges-and-length-of-stay-after-shoulder-arthroplasty
#12
Bryan M Saltzman, Bryce Basques, Timothy Leroux, Rachel M Frank, Gregory P Nicholson, Nikhil N Verma, Anthony A Romeo
PURPOSE: To identify differences in demographics, diagnosis, arthroplasty type, early adverse events, length of stay, and hospital costs between men and women undergoing shoulder arthroplasty. METHODS: We used a nationally representative U.S. population database to determine annual rates of shoulder arthroplasty (SA) in patients (2002-2011). Early adverse events, length-of-stay and hospitalization costs were determined, and compared between patient genders. RESULTS: A cohort of 372,753 patients underwent total-SA (TSA) (59...
July 9, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28688934/humeral-bone-resorption-after-anatomic-shoulder-arthroplasty-using-an-uncemented-stem
#13
Kazuya Inoue, Naoki Suenaga, Naomi Oizumi, Hiroshi Yamaguchi, Naoki Miyoshi, Noboru Taniguchi, Mitsuru Munemoto, Takuya Egawa, Yasuhito Tanaka
BACKGROUND: Bone resorption around the femoral stem after total hip arthroplasty is a well-known phenomenon. However, only a few studies have evaluated bone resorption after shoulder arthroplasty. This study investigated the prevalence of humeral bone resorption after different shoulder arthroplasty procedures. METHODS: The study included 147 shoulders that underwent total shoulder arthroplasty (TSA) or humeral head replacement (HHR) with an uncemented humeral stem from November 2008 to May 2015 and were monitored for more than 1 year...
July 5, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28684150/sandwich-technique-using-fibrin-coated-collagen-fleece-for-sellar-reconstruction-in-large-dural-defects-during-transsphenoidal-surgery
#14
Jaeyoung So, Hunho Park, Kyeong-Soo Sung, Kyu Sung Lee, Chang-Ki Hong
PURPOSE: Various surgical methods to prevent intraoperative and postoperative cerebrospinal fluid (CSF) leaks during transsphenoidal approach (TSA) surgeries have been reported, but surgical techniques to address large dural defects have been less thoroughly investigated in the literature. The authors retrospectively evaluated the usefulness of the sandwich technique using fibrin-coated collagen fleece (TachoSil) to prevent intraoperative CSF leakage from large dural defects in TSA surgery...
July 3, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28682872/liposomal-bupivacaine-versus-interscalene-nerve-block-for-pain-control-after-shoulder-arthroplasty-a-meta-analysis
#15
Zeng Yan, Zong Chen, Chuangen Ma
BACKGROUND: Postoperative pain control after total shoulder arthroplasty (TSA) can be challenging. Liposomal bupivacaine and interscalene nerve block are 2 common pain control protocol for TSA patients. However, whether liposomal bupivacaine was superior than interscalene nerve block was unknown. This meta-analysis aimed to illustrate the efficacy liposomal bupivacaine versus interscalene nerve block for pain control in patients undergoing TSA. METHODS: In May 2017, a systematic computer-based search was conducted in PubMed, EMBASE, Web of Science, Cochrane Database of Systematic Reviews, and Google database...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28682229/-epigenetic-mechanisms-and-alcohol-use-disorders-a-potential-therapeutic-target
#16
Rémi Legastelois, Jérôme Jeanblanc, Catherine Vilpoux, Erika Bourguet, Mickael Naassila
Alcohol use disorder is a devastating illness with a profound health impact, and its development is dependent on both genetic and environmental factors. This disease occurs over time and requires changes in brain gene expression. There is converging evidence suggesting that the epigenetic processes may play a role in the alcohol-induced gene regulations and behavior such as the intervention of DNA methylation and histone acetylation. Histone acetylation, like histone methylation, is a highly dynamic process regulated by two classes of enzymes: histone acetyltransferases and histone deacetylases (HDACs)...
2017: Biologie Aujourd'hui
https://www.readbyqxmd.com/read/28681354/does-postoperative-glenoid-retroversion-affect-the-2-year-clinical-and-radiographic-outcomes-for-total-shoulder-arthroplasty
#17
Benjamin C Service, Jason E Hsu, Jeremy S Somerson, Stacy M Russ, Frederick A Matsen
BACKGROUND: While glenoid retroversion and posterior humeral head decentering are common preoperative features of severely arthritic glenohumeral joints, the relationship of postoperative glenoid component retroversion to the clinical results of total shoulder arthroplasty (TSA) is unclear. Studies have indicated concern for inferior outcomes when glenoid components are inserted in 15° or more retroversion. QUESTIONS/PURPOSES: In a population of patients undergoing TSA in whom no specific efforts were made to change the version of the glenoid, we asked whether at 2 years after surgery patients having glenoid components implanted in 15° or greater retroversion had (1) less improvement in the Simple Shoulder Test (SST) score and lower SST scores; (2) higher percentages of central peg lucency, higher Lazarus radiolucency grades, higher mean percentages of posterior decentering, and more frequent central peg perforation; or (3) a greater percentage having revision for glenoid component failure compared with patients with glenoid components implanted in less than 15° retroversion...
July 5, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28680091/bioavailability-and-pharmacokinetic-comparison-of-tanshinones-between-two-formulations-of-salvia-miltiorrhiza-in-healthy-volunteers
#18
Lu Xing, Zhi-Rong Tan, Jin-Le Cheng, Wei-Hua Huang, Wei Zhang, Wen Deng, Chun-Su Yuan, Hong-Hao Zhou
Salvia miltiorrhiza (SM) is widely used to treat microcirculatory disturbance-related diseases; its lipophilic components play important roles in this application. Cryptotanshinone (CTS), tanshinone I (TSI) and tanshinone IIA (TSA) are the most widely-studied lipophilic ingredients, but low oral bioavailability limits their clinical application. It has been proven that micronization could improve the bioavailability of some drugs, so we've conducted this randomized study to investigate whether micronized granular powder (GP) of SM could improve the bioavailability of tanshinones compared with traditional decoction (TD)...
July 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28678693/effect-of-age-on-outcomes-of-shoulder-arthroplasty
#19
Oke A Anakwenze, Tameem Yehyawi, Mark T Dillon, Elizabeth Paxton, Ronald Navarro, Anshuman Singh
CONTEXT: Outcomes of total shoulder arthroplasty (TSA) and reverse total shoulder arthroplasty (RTSA) as a function of age are not well known. OBJECTIVE: To understand the effects of age on revision rate, mortality, and hospital readmissions. DESIGN: A retrospective cohort study of prospectively collected data. Using an integrated health care system's shoulder arthroplasty registry, we identified patients who underwent TSA and RTSA between January 2007 and June 2012...
2017: Permanente Journal
https://www.readbyqxmd.com/read/28668345/scriptaid-cause-histone-deacetylase-inhibition-and-cell-cycle-arrest-in-hela-cancer-cells-a-study-on-structural-and-functional-aspects
#20
M Janaki Ramaiah, Shaik Mohammad Naushad, A Lavanya, Chatla Srinivas, Anjana Devi Tangutur, Sowgandhika Sampath Kumar, Dhepikha Bharani Dharan, Manika Pal Bhadra
Scriptaid (SCR), a well-known histone deacetylase inhibitor, cause various cellular effects such as cell growth inhibition and apoptosis. In this study, we have evaluated the anti-cancer effects of scriptaid in HeLa cells, IMR-32 and HepG2 cells. Scriptaid inhibited the growth of HeLa cells with IC50 of 2μM at 48h in a dose-dependent manner. Flow-cytometric analysis indicated that SCR induced apoptosis. Scriptaid was found to inhibit HDAC-8 effectively than other HDAC inhibitor such as TSA as observed by HDAC-8 assay, Western blotting and modelling study...
June 28, 2017: Gene
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