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Tong Zhou, Luke Erber, Bing Liu, Yankun Gao, Hai-Bin Ruan, Yue Chen
Proline hydroxylation is a critical cellular mechanism regulating oxygen-response pathways in tumor initiation and progression. Yet, its substrate diversity and functions remain largely unknown. Here, we report a system-wide analysis to characterize proline hydroxylation substrates in cancer cells using an immunoaffinity-purification assisted proteomics strategy. We identified 562 sites from 272 proteins in HeLa cells. Bioinformatic analysis revealed that proline hydroxylation substrates are significantly enriched with mRNA processing and stress-response cellular pathways with canonical and diverse flanking sequence motifs...
October 13, 2016: Oncotarget
Kishore Polireddy, Ruochen Dong, Peter R McDonald, Tao Wang, Brendan Luke, Ping Chen, Melinda Broward, Anuradha Roy, Qi Chen
BACKGROUND: Pancreatic cancer has an enrichment of stem-like cancer cells (CSCs) that contribute to chemoresistant tumors prone to metastasis and recurrence. Drug screening assays based on cytotoxicity cannot identify specific CSC inhibitors, because CSCs comprise only a small portion of cancer cell population, and it is difficult to propagate stable CSC populations in vitro for high-throughput screening (HTS) assays. Based on the important role of cancer cell epithelial-to-mesenchymal transition (EMT) in promoting CSCs, we hypothesized that inhibition of EMT can be a useful strategy for inhibiting CSCs, and therefore a feasible approach for HTS can be built for identification of CSC inhibitors, based on assays detecting EMT inhibition...
2016: PloS One
Salem A E Omar, Paul A Scattergood, Luke K McKenzie, Helen E Bryant, Julia A Weinstein, Paul I P Elliott
The complex [Os(btzpy)₂][PF₆]₂ (1, btzpy = 2,6-bis(1-phenyl-1,2,3-triazol-4-yl)pyridine) has been prepared and characterised. Complex 1 exhibits phosphorescence (λem = 595 nm, τ = 937 ns, φem = 9.3% in degassed acetonitrile) in contrast to its known ruthenium(II) analogue, which is non-emissive at room temperature. The complex undergoes significant oxygen-dependent quenching of emission with a 43-fold reduction in luminescence intensity between degassed and aerated acetonitrile solutions, indicating its potential to act as a singlet oxygen sensitiser...
October 18, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
Xuan-Binh D Pham, Luke Okamuro, Ezinne J Ihenachor, Jerry J Kim, Hamid Alipour, Matthew Koopmann, Tim J Ryan, Christian M de Virgilio
No abstract text is available yet for this article.
August 2016: Journal of Vascular Surgery
Chi-Fai Ng, Sylvia Luke, Chi-Hang Yee, Winnie Chu, Ka-Tak Wong, John Yuen
Objectives To perform a prospective study to evaluate the renal protective effects of ramping protocol and pause protocol for extracorporeal shockwave lithotripsy in human subjects. Patients and Methods 320 patients with solitary renal stone <15mm, were randomized to receive one of four protocols: (1) 80% power from beginning until the end of treatment; (2) the first 100 SWs at 40% power, and then 80% power until the end of treatment; (3) the first 100 shocks at 40% power, followed by a 3-minute pause and then further SWs at 80% power until the end of treatment; and (4) the first 100 shocks at 80% power, followed by a 3-minute pause and then further SWs at 80% power until the end of treatment...
October 20, 2016: Journal of Endourology
Arun K Ghosh, Luke A Kassekert, Joseph D Bungard
We have elucidated the complete absolute configuration of callyspongiolide and unambiguously assigned its stereochemistry at the C-21 center through synthesis. Four stereoisomers of callyspongiolide were synthesized in a convergent and enantioselective manner. A late-stage Sonogashira coupling forges the diene-ynic side chain. Other notable reactions are Yonemitsu's variation of Yamaguchi macrolactonization to cyclize an alkynic seco acid, highly trans-selective Julia-Kocienski olefination, CBS reduction to set the C-21 stereocenter, and methyl cuprate addition to an unsaturated pyranone to install the C-5 methyl center...
October 20, 2016: Organic & Biomolecular Chemistry
Brandon-Luke L Seagle, Megan Dayno, Anna E Strohl, Stephen Graves, Wilberto Nieves-Neira, Shohreh Shahabi
OBJECTIVE: To determine overall survival (OS) and factors associated with OS after pelvic exenteration for uterine cancer. METHODS: Women with uterine cancer who underwent exenteration (n=1160) were identified from the 1998-2011 National Cancer Data Base. Kaplan-Meier and multivariate Cox proportional-hazards survival analyses were performed to test for associations of potential explanatory variables with OS. Analyzed confounders included age, comorbidity score, insurance status, income, distance from home to treatment center, stage, distant and nodal metastasis, tumor size, surgical margin status, exenteration type, and treatment with radiation and/or chemotherapy...
October 16, 2016: Gynecologic Oncology
Luke Miller, Alessandro Farnè
Our brain is less able to move one of our hands if an illusion makes us feel like the hand does not belong to us.
October 20, 2016: ELife
Vivian E Strong, Sepideh Gholami, Manish A Shah, Laura H Tang, Yelena Y Janjigian, Mark Schattner, Luke V Selby, Sam S Yoon, Erin Salo-Mullen, Zsofia K Stadler, David Kelsen, Murray F Brennan, Daniel G Coit
OBJECTIVE: The aim of this study was to describe postoperative outcomes of total gastrectomy at our institution for patients with hereditary diffuse gastric cancer (HDGC). BACKGROUND: HDGC, which is mainly caused by germline mutations in the E-cadherin gene (CDH1), renders a lifetime risk of gastric cancer of up to 70%, prompting a recommendation for prophylactic total gastrectomy. METHODS: A prospective gastric cancer database identified 41 patients with CDH1 mutation who underwent total gastrectomy during 2005 to 2015...
October 17, 2016: Annals of Surgery
Luke Grome, Patrick Bacaj, Gregory Borah
A 38-year-old woman is described who presented with a slowly growing mass on the posterior aspect of the left ear. Excision and histopathologic evaluation revealed a pleomorphic adenoma (PA) originating from heterotopic salivary gland tissue. Many authors have presented cases of PAs originating from ceruminous glands in the external auditory canal or of so-called chondroid syringoma originating from apocrine and eccrine sweat glands. This is the only case in the recent literature of a PA originating from a heterotopic rest of salivary gland tissue in the retroauricular region...
September 2016: Plastic and Reconstructive Surgery. Global Open
Meelad Sayma, Tomos Luke Treharne, Hywel Rhys Williams
No abstract text is available yet for this article.
2016: Journal of Multidisciplinary Healthcare
Juul Verberne, Frank Risis, Luke Campbell, Scott Chambers, Stephen O'Leary
HYPOTHESIS: Scala tympani morphology influences the insertion dynamics and intra-scalar position of straight electrode arrays. BACKGROUND: Hearing preservation is the goal of cochlear implantation with current thin straight electrode arrays. These hug the lateral wall, facilitating full, atraumatic insertions. However, most studies still report some postoperative hearing loss. This study explores the influence of scala tympani morphology on array position relative to the basilar membrane and its possible contribution to postoperative hearing loss...
October 12, 2016: Otology & Neurotology
Cornelia U Welte, Olivia Rasigraf, Annika Vaksmaa, Wouter Versantvoort, Arslan Arshad, Huub J M Op den Camp, Mike S M Jetten, Claudia Lüke, Joachim Reimann
Microbial methane oxidation is an important process to reduce the emission of the greenhouse gas methane. Anaerobic microorganisms couple the oxidation of methane to the reduction of sulfate, nitrate and nitrite, and possibly oxidized iron and manganese minerals. In this article, we review the recent finding of the intriguing nitrate- and nitrite-dependent anaerobic oxidation of methane (AOM). Nitrate-dependent AOM is catalyzed by anaerobic archaea belonging to the ANME-2d clade closely related to Methanosarcina methanogens...
October 18, 2016: Environmental Microbiology Reports
Joana C Silva, Emmanuel Cornillot, Carrie McCracken, Sahar Usmani-Brown, Ankit Dwivedi, Olukemi O Ifeonu, Jonathan Crabtree, Hanzel T Gotia, Azan Z Virji, Christelle Reynes, Jacques Colinge, Vidya Kumar, Lauren Lawres, Joseph E Pazzi, Jozelyn V Pablo, Chris Hung, Jana Brancato, Priti Kumari, Joshua Orvis, Kyle Tretina, Marcus Chibucos, Sandy Ott, Lisa Sadzewicz, Naomi Sengamalay, Amol C Shetty, Qi Su, Luke Tallon, Claire M Fraser, Roger Frutos, Douglas M Molina, Peter J Krause, Choukri Ben Mamoun
Babesia microti, a tick-transmitted, intraerythrocytic protozoan parasite circulating mainly among small mammals, is the primary cause of human babesiosis. While most cases are transmitted by Ixodes ticks, the disease may also be transmitted through blood transfusion and perinatally. A comprehensive analysis of genome composition, genetic diversity, and gene expression profiling of seven B. microti isolates revealed that genetic variation in isolates from the Northeast United States is almost exclusively associated with genes encoding the surface proteome and secretome of the parasite...
October 18, 2016: Scientific Reports
Luke Steven Robinson, Mitchell Sarkies, Ted Brown, Lisa O'Brien
BACKGROUND: Injuries sustained to the hand and wrist are common, accounting for 20% of all emergency presentations. The economic burden of these injuries, comprised of direct (medical expenses incurred), indirect (value of lost productivity) and intangible costs, can be extensive and rise sharply with the increase of severity. OBJECTIVE: This paper systematically reviews cost-of-illness studies and health economic evaluations of acute hand and wrist injuries with a particular focus on direct, indirect and intangible costs...
October 1, 2016: Injury
Joan Porter, Luke Mondor, Moira K Kapral, Jiming Fang, Ruth E Hall
BACKGROUND/AIMS: The reliability of diagnostic coding of acute stroke and transient ischemic attack (TIA) in administrative data is uncertain. The purpose of this study is to determine the agreement between administrative data sources and chart audit for the identification of stroke type, stroke risk factors, and the use of hospital-based diagnostic procedures in patients with stroke or TIA. METHODS: Medical charts for a population-based sample of patients (n = 14,508) with ischemic stroke, intracerebral hemorrhage (ICH), or TIA discharged from inpatient and emergency departments (ED) in Ontario, Canada, between April 1, 2012 and March 31, 2013, were audited by trained abstractors...
October 18, 2016: Cerebrovascular Diseases Extra
Luke Pett, Konstantinos Kiakos, Vijay Satam, Pravin Patil, Sarah Laughlin-Toth, Matthew Gregory, Michael Bowerman, Kevin Olson, Mia Savagian, Megan Lee, Moses Lee, W David Wilson, Daniel Hochhauser, John A Hartley
BACKGROUND: Sequence specific polyamide HxIP 1, targeted to the inverted CCAAT Box 2 (ICB2) on the topoisomerase IIα (topo IIα) promoter can inhibit NF-Y binding, re-induce gene expression and increase sensitivity to etoposide. To enhance biological activity, diamino-containing derivatives (HxI*P 2 and HxIP* 3) were synthesised incorporating an alkyl amino group at the N1-heterocyclic position of the imidazole/pyrrole. METHODS: DNase I footprinting was used to evaluate DNA binding of the diamino Hx-polyamides, and their ability to disrupt the NF-Y:ICB2 interaction assessed using EMSAs...
October 14, 2016: Biochimica et Biophysica Acta
Luke Gelinas
No abstract text is available yet for this article.
November 2016: American Journal of Bioethics: AJOB
Alex Maolanon, Helle Kristensen, Luke Leman, Reza Ghadiri, Christian Adam Olsen
Inhibition of histone deacetylase (HDAC) enzymes has emerged as a target for development of cancer chemotherapy. Four compounds have gained approval for clinical use by the Food and Drug Administration (FDA) in the US, and several are currently in clinical trials. However, none of these compounds possesses particularly good isozyme-selectivity, which would be a highly desirable feature in a tool compound. Whether selective inhibition of individual HDAC isozymes will provide improved drug candidates remains to be seen...
October 17, 2016: Chembiochem: a European Journal of Chemical Biology
Ming-Fong Chang, Jung-Hsien Hsieh, Hao Chiang, Hung-Wei Kan, Cho-Min Huang, Luke Chellis, Bo-Shiou Lin, Shi-Chuen Miaw, Chun-Liang Pan, Chi-Chao Chao, Sung-Tsang Hsieh
Delivering gene constructs into the dorsal root ganglia (DRG) is a powerful but challenging therapeutic strategy for sensory disorders affecting the DRG and their peripheral processes. The current delivery methods of direct intra-DRG injection and intrathecal injection have several disadvantages, including potential injury to DRG neurons and low transfection efficiency, respectively. This study aimed to develop a spinal nerve injection strategy to deliver polyethylenimine mixed with plasmid (PEI/DNA polyplexes) containing green fluorescent protein (GFP)...
October 17, 2016: Scientific Reports
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