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https://www.readbyqxmd.com/read/29161241/determination-of-an-optimal-response-cut-off-able-to-predict-progression-free-survival-in-patients-with-well-differentiated-advanced-pancreatic-neuroendocrine-tumours-treated-with-sunitinib-an-alternative-to-the-current-recist-defined-response
#1
Angela Lamarca, Jorge Barriuso, Matthew Kulke, Ivan Borbath, Heinz-Josef Lenz, Jean Luc Raoul, Neal J Meropol, Catherine Lombard-Bohas, James Posey, Sandrine Faivre, Eric Raymond, Juan W Valle
BACKGROUND: Sunitinib prolongs progression-free survival (PFS) in patients with advanced pancreatic neuroendocrine tumours (pNET). Response Evaluation Criteria in Solid Tumors (RECIST)-defined partial responses (PR; classically defined as ⩾30% size decrease from baseline) are infrequent. METHODS: Individual data of pNET patients from the phase II [NCT00056693] and pivotal phase III [NCT00428597] trials of sunitinib were analysed in this investigator-initiated, post hoc study...
November 21, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/29161035/synthesis-of-photoswitchable-%C3%AE-9-tetrahydrocannabinol-derivatives-enables-optical-control-of-cannabinoid-receptor-1-signaling
#2
Matthias Westphal, Michael Andreas Schafroth, Roman Sarott, Michael Imhof, Christian Bold, Philipp Leippe, Amey Dhopeshwarkar, Jessica Grandner, Vsevolod Katritch, Ken Mackie, Dirk Trauner, Erick M Carreira, James Allen Frank
The cannabinoid receptor 1 (CB1) is an inhibitory G protein-coupled receptor abundantly expressed in the central nerv-ous system. It has rich pharmacology and largely accounts for the recreational use of cannabis. We describe efficient asymmetric syntheses of four photoswitchable Δ(9)-tetrahydrocannabinol derivatives (azo-THCs) from a central building block 3-Br-THC. Using electrophysiology and a FRET-based cAMP assay, two compounds are identified as potent CB1 agonists that change their effect upon illumination...
November 21, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29160202/re-classification-of-clavibacter-michiganensis-subspecies-on-the-basis-of-whole-genome-and-multi-locus-sequence-analyses
#3
Xiang Li, James Tambong, Kat Xiaoli Yuan, Wen Chen, Huimin Xu, C André Lévesque, Solke H De Boer
Although the genus Clavibacter was originally proposed to accommodate all phytopathogenic coryneform bacteria containing B2γ diaminobutyrate in the peptidoglycan, reclassification of all but one species into other genera has resulted in the current monospecific status of the genus. The single species in the genus, Clavibacter michiganensis, has multiple subspecies, which are all highly host-specific plant pathogens. Whole genome analysis based on average nucleotide identity and digital DNA-DNA hybridization as well as multi-locus sequence analysis (MLSA) of seven housekeeping genes support raising each of the C...
November 21, 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/29160171/recent-pregnancy-is-not-associated-with-high-risk-pathological-features-of-well-differentiated-thyroid-cancer
#4
Angela J Chen, Masha J Livhits, Lin Du, James X Wu, Eric James Kuo, Michael W Yeh, Angela M Leung
BACKGROUND: Thyroid cancer is commonly diagnosed in the first postpartum year, supporting the theory that high levels of estrogen may stimulate progression of hormone-mediated thyroid cancer. The aim of this study was to assess the effect of recent pregnancy on histopathologic disease characteristics of well-differentiated thyroid cancer (WDTC). METHODS: Cases of WDTC (1999-2012) were identified from the California Cancer Registry and linked to data from the Office of Statewide Health Planning and Development...
November 21, 2017: Thyroid: Official Journal of the American Thyroid Association
https://www.readbyqxmd.com/read/29159967/exploiting-%C3%AE-orthogonal-photoligation-for-layered-surface-patterning
#5
Paul Lederhose, Doris Abt, Alexander Welle, Rouven Mueller, Christopher Barner-Kowollik, James Peter Blinco
We exploit λ-orthogonal photoligation of nitrile imine-mediated tetrazole-ene cycloaddition (NITEC) chemistry to generate complex, interconnected surface modifications via a simple layered surface patterning approach. By judicious choice of activating chromophores, we introduce a one pot reaction where nitrile imine formation This λ-orthogonal photoligation was subsequently exploited for the generation layered patterned surfaces. Specifically, the visible light active tetrazole was grafted to a silicon wafer and subsequently photolithographically patterned with a dipolarophile modified with a UV-active tetrazole...
November 20, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29159914/gaba-concentration-in-sensorimotor-cortex-following-high-intensity-exercise-and-relationship-to-lactate-levels
#6
James P Coxon, Robin F H Cash, Joshua J Hendrikse, Nigel C Rogasch, Ellen Stavrinos, Chao Suo, Murat Yücel
High-intensity exercise increases the concentration of circulating lactate. Cortical uptake of blood borne lactate increases during and following exercise, however the potential relationship with changes in the concentration of neurometabolites remains unclear. While changes in neurometabolite concentration have previously been demonstrated in primary visual cortex following exercise, it remains unknown whether these changes extend to regions such as sensorimotor cortex (SM) or executive regions such as dorsolateral prefrontal cortex (DLPFC)...
November 21, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/29159595/resilience-and-physical-and-mental-well-being-in-adults-with-and-without-hiv
#7
Jennifer A McGowan, James Brown, Fiona C Lampe, Marc Lipman, Colette Smith, Alison Rodger
Resilience has been related to improved physical and mental health, and is thought to improve with age. No studies have explored the relationship between resilience, ageing with HIV, and well-being. A cross sectional observational study performed on UK HIV positive (N = 195) and HIV negative adults (N = 130). Associations of both age and 'time diagnosed with HIV' with resilience (RS-14) were assessed, and the association of resilience with depression, anxiety symptoms (PHQ-9 and GAD-7), and problems with activities of daily living (ADLs) (Euroqol 5D-3L)...
November 20, 2017: AIDS and Behavior
https://www.readbyqxmd.com/read/29159053/using-simultaneous-pet-mri-to-compare-the-accuracy-of-diagnosing-frontotemporal-dementia-by-arterial-spin-labelling-mri-and-fdg-pet
#8
Udunna C Anazodo, Elizabeth Finger, Benjamin Yin Ming Kwan, William Pavlosky, James Claude Warrington, Matthias Günther, Frank S Prato, Jonathan D Thiessen, Keith S St Lawrence
Purpose: The clinical utility of FDG-PET in diagnosing frontotemporal dementia (FTD) has been well demonstrated over the past decades. On the contrary, the diagnostic value of arterial spin labelling (ASL) MRI - a relatively new technique - in clinical diagnosis of FTD has yet to be confirmed. Using simultaneous PET/MRI, we evaluated the diagnostic performance of ASL in identifying pathological abnormalities in FTD (FTD) to determine whether ASL can provide similar diagnostic value as FDG-PET...
2018: NeuroImage: Clinical
https://www.readbyqxmd.com/read/29158934/ocular-rosacea-causing-corneal-melt-in-an-african-american-patient-and-a-hispanic-patient
#9
Joanna S Saade, Bachir Abiad, Jonathan Jan, Dana Saadeh, James P McCulley, Jeremy Bartley
Purpose: To discuss two rare presentations of ocular rosacea in a Hispanic patient and an African American patient with unusual ocular manifestations. Case Report: Case  1: a 43-year-old Hispanic woman presented with right eye corneal perforation. Her prior medical history was significant for rosacea only, diagnosed clinically by a dermatologist. Her eye exam showed signs of bilateral ocular rosacea. An emergent full thickness tectonic corneal patch graft was done...
2017: Case Reports in Ophthalmological Medicine
https://www.readbyqxmd.com/read/29158176/decreased-mcl-1-protein-level-in-the-striatum-of-1-methyl-4-phenyl-1-2-3-6-tetrahydropyridine-mptp-treated-mice
#10
Edward Lu, Sumit Sarkar, James Raymick, Merle G Paule, Qiang Gu
1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) is a well-known neurotoxicant that can selectively destroy dopaminergic neurons and MPTP-treated animals are often used as models for studying aspects of Parkinson's disease (PD). While apoptosis has been suggested as a possible mechanism underlying MPTP-induced cell death and several apoptosis-associated proteins have been implicated in MPTP-animal models, relevant information regarding the possible involvement of Mcl-1 (myeloid cell leukemia 1) protein is missing...
November 17, 2017: Brain Research
https://www.readbyqxmd.com/read/29157608/retention-and-effective-diffusion-of-model-metabolites-on-porous-graphitic-carbon
#11
Daniel B Lunn, Young J Yun, James W Jorgenson
The study of metabolites in biological samples is of high interest for a wide range of biological and pharmaceutical applications. Reversed phase liquid chromatography is a common technique used for the separation of metabolites, but it provides little retention for polar metabolites. An alternative to C18 bonded phases, porous graphitic carbon has the ability to provide significant retention for both non-polar and polar analytes. The goal of this work is to study the retention and effective diffusion properties of porous graphitic carbon, to see if it is suitable for the wide injection bands and long run times associated with long, packed capillary-scale separations...
November 14, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/29156488/association-of-pd-l1-expression-with-treatment-outcomes-in-patients-with-braf-mutation-positive-melanoma-treated-with-vemurafenib-or-cobimetinib-combined-with-vemurafenib
#12
Matthew J Wongchenko, Antoni Ribas, Brigitte Dréno, Paolo A Ascierto, Grant A McArthur, Jorge D Gallo, Isabelle A Rooney, Jessie Hsu, Hartmut Koeppen, Yibing Yan, James Larkin
The prognostic significance of programmed death ligand-1 (PD-L1) on treatment outcomes in patients receiving BRAF with or without MEK inhibitors is not well understood. This retrospective exploratory analysis evaluated the association of tumour PD-L1 expression with progression-free survival (PFS) and overall survival (OS) among 210 patients in the coBRIM trial treated with cobimetinib plus vemurafenib or placebo plus vemurafenib. In the vemurafenib cohort, there was a trend of increased PFS and OS in those with PD-L1(+) melanoma, with hazard ratios (HRs) (PD-L1(+) versus PD-L1(-) ) of 0...
November 20, 2017: Pigment Cell & Melanoma Research
https://www.readbyqxmd.com/read/29156362/test-anxiety-effects-predictors-and-correlates-a-30-year-meta-analytic-review
#13
REVIEW
Nathaniel von der Embse, Dane Jester, Devlina Roy, James Post
BACKGROUND AND OBJECTIVES: Since the 1988 publication of Hembree's seminal meta-analysis on test anxiety, much has changed in the theoretical conceptualization of test anxiety, as well as the influences on test performance. The present study examined the influence of test anxiety on a variety of educational outcomes, in addition to demographic and intrapersonal correlates. DESIGN AND METHODS: Results of 238 studies from 1988 to the present, were synthesized via a meta-analytic framework to explicate predictors, correlates, and relationships with the test anxiety construct...
November 13, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/29156298/european-research-on-electrochemotherapy-in-head-and-neck-cancer-eureca-project-results-from-the-treatment-of-mucosal-cancers
#14
Christina Caroline Plaschke, Giulia Bertino, James A McCaul, Juan J Grau, Remco de Bree, Gregor Sersa, Antonio Occhini, Ales Groselj, Cristobal Langdon, Derrek A Heuveling, Maja Cemazar, Primoz Strojan, C Rene Leemans, Marco Benazzo, Francesca De Terlizzi, Irene Wessel, Julie Gehl
AIM: Electrochemotherapy is an effective local treatment for cutaneous tumours and metastases. In this prospective trial, six European institutions investigated electrochemotherapy in recurrent, mucosal head and neck tumours. PATIENT AND METHODS: Forty-three patients with recurrent mucosal head and neck tumours and no further curative or reasonably effective palliative treatment options were enrolled and treated with electrochemotherapy. Patients were treated in general anaesthesia using intravenous or local injection of bleomycin followed by delivery of electric pulses to the tumour area...
November 16, 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/29156222/cerebral-small-vessel-disease-in-middle-age-and-genetic-predisposition-to-late-onset-alzheimer-s-disease
#15
James D Stefaniak, Li Su, Elijah Mak, Nasim Sheikh Bahaei, Katie Wells, Karen Ritchie, Adam Waldman, Craig W Ritchie, John T O'Brien
INTRODUCTION: Cerebral small vessel disease (CSVD) is associated with late-onset Alzheimer's disease (LOAD) and might contribute to the relationship between apolipoprotein E ε4 (APOEε4) and LOAD, in older people. However, it is unclear whether CSVD begins in middle age in individuals genetically predisposed to LOAD. METHODS: We assessed the relationship between radiological markers of CSVD, white matter hyperintensities and microbleeds, and genetic predisposition to LOAD in a cross-sectional analysis of cognitively normal subjects aged 40-59 years recruited from the PREVENT Dementia study...
November 18, 2017: Alzheimer's & Dementia: the Journal of the Alzheimer's Association
https://www.readbyqxmd.com/read/29156154/coconut-phytocompounds-inhibits-polyol-pathway-enzymes-implication-in-prevention-of-microvascular-diabetic-complications
#16
Devi Lekshmi Sheela, Puthiyaveetil Abdulla Nazeem, Arunaksharan Narayanankutty, R Muthangaparambil Shylaja, Sangeetha P Davis, Priyanga James, Ravisankar Valsalan, Thekkekara Devassy Babu, Achuthan C Raghavamenon
Coconut oil (CO), the primary choice of cooking purposes in the south Asian countries, is rich in medium chain saturated fatty acids, especially lauric acid (50-52%). The oil has high medicinal use in Ayurvedic system and known to contain polyphenolic antioxidants. Studies have reported that CO improves insulin sensitivity and shows hypoglycemic effect. However, there is no information regarding its effect on chronic diabetic complications including retinopathy and nephropathy is available. The secondary diabetic complications are mediated by the activation of polyol pathway, where aldose reductase (AR) plays crucial role...
December 2017: Prostaglandins, Leukotrienes, and Essential Fatty Acids
https://www.readbyqxmd.com/read/29155757/dissection-of-human-retina-and-rpe-choroid-for-proteomic-analysis
#17
Thiago Cabral, Marcus A Toral, Gabriel Velez, James E DiCarlo, Anuradha M Gore, MaryAnn Mahajan, Stephen H Tsang, Alexander G Bassuk, Vinit B Mahajan
The human retina is composed of the sensory neuroretina and the underlying retinal pigmented epithelium (RPE), which is firmly complexed to the vascular choroid layer. Different regions of the retina are anatomically and molecularly distinct, facilitating unique functions and demonstrating differential susceptibility to disease. Proteomic analysis of each of these regions and layers can provide vital insights into the molecular process of many diseases, including Age-Related Macular Degeneration (AMD), diabetes mellitus, and glaucoma...
November 12, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29155696/safety-of-consecutive-same-day-bilateral-intravitreal-dexamethasone-implant-ozurdex
#18
Kapil G Kapoor, James B Colchao
PURPOSE: The objective of this study was to evaluate patient safety and tolerance of consecutive bilateral intravitreal dexamethasone (Ozurdex) injections during a single visit for the treatment of cystoid macular edema secondary to retinal vein occlusion, diabetic macular edema, or noninfectious posterior uveitis. METHODS: This was a retrospective single-center institutional review board-approved study from March 1, 2013, through August 1, 2016. All patients had a complete ophthalmologic examination and optical coherence tomography imaging...
November 16, 2017: Retinal Cases & Brief Reports
https://www.readbyqxmd.com/read/29155667/use-of-a-diagonal-approach-to-health-system-strengthening-and-measles-elimination-after-a-large-nationwide-outbreak-in-mongolia
#19
José E Hagan, Ashley Greiner, Ulzii-Orshikh Luvsansharav, Jason Lake, Christopher Lee, Roberta Pastore, Yoshihiro Takashima, Amarzaya Sarankhuu, Sodbayar Demberelsuren, Rachel Smith, Benjamin Park, James L Goodson
Measles is a highly transmissible infectious disease that causes serious illness and death worldwide. Efforts to eliminate measles through achieving high immunization coverage, well-performing surveillance systems, and rapid and effective outbreak response mechanisms while strategically engaging and strengthening health systems have been termed a diagonal approach. In March 2015, a large nationwide measles epidemic occurred in Mongolia, 1 year after verification of measles elimination in this country. A multidisciplinary team conducted an outbreak investigation that included a broad health system assessment, organized around the Global Health Security Agenda framework of Prevent-Detect-Respond, to provide recommendations for evidence-based interventions to interrupt the epidemic and strengthen the overall health system to prevent future outbreaks of measles and other epidemic-prone infectious threats...
December 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/29155430/engineering-peptide-ligase-specificity-by-proteomic-identification-of-ligation-sites
#20
Amy M Weeks, James A Wells
Enzyme-catalyzed peptide ligation is a powerful tool for site-specific protein bioconjugation, but stringent enzyme-substrate specificity limits its utility. We developed an approach for comprehensively characterizing peptide ligase specificity for N termini using proteome-derived peptide libraries. We used this strategy to characterize the ligation efficiency for >25,000 enzyme-substrate pairs in the context of the engineered peptide ligase subtiligase and identified a family of 72 mutant subtiligases with activity toward N-terminal sequences that were previously recalcitrant to modification...
November 20, 2017: Nature Chemical Biology
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