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https://www.readbyqxmd.com/read/28098487/evaluating-the-performance-of-cart-based-missing-data-methods-under-a-missing-not-at-random-mechanism
#1
Timothy Hayes, John J McArdle
No abstract text is available yet for this article.
January 18, 2017: Multivariate Behavioral Research
https://www.readbyqxmd.com/read/28089957/the-epigenetic-clock-and-physical-development-during-childhood-and-adolescence-longitudinal-analysis-from-a-uk-birth-cohort
#2
Andrew J Simpkin, Laura D Howe, Kate Tilling, Tom R Gaunt, Oliver Lyttleton, Wendy L McArdle, Susan M Ring, Steve Horvath, George Davey Smith, Caroline L Relton
BACKGROUND: Statistical models that use an individual's DNA methylation levels to estimate their age (known as epigenetic clocks) have recently been developed, with 96% correlation found between epigenetic and chronological age. We postulate that differences between estimated and actual age [age acceleration (AA)] can be used as a measure of developmental age in early life. METHODS: We obtained DNA methylation measures at three time points (birth, age 7 years and age 17 years) in 1018 children from the Avon Longitudinal Study of Parents and Children (ALSPAC)...
January 15, 2017: International Journal of Epidemiology
https://www.readbyqxmd.com/read/28087520/atheroprotective-vaccination-with-mhc-ii-restricted-apob-peptides-induces-peritoneal-il-10-producing-cd4-t-cells
#3
Takayuki Kimura, Kevin Tse, Sara McArdle, Teresa Gerhardt, Jacqueline Miller, Zbigniew Mikulski, John Sidney, Alessandro Sette, Dennis Wolf, Klaus Ley
Although immunization with MHC class II-restricted ApoB peptides has been shown to be atheroprotective, the mechanism is unclear. Here, we investigated CD4(+) T cell populations in immunized atherosclerotic mice. Peptides (16-mers) from mouse ApoB, the core protein of low-density lipoprotein (LDL), were screened for binding to I-A(b) by computer prediction and confirmed by radiolabeled peptide competition. Three new peptides, P101 (FGKQGFFPDSVNKALY, 5.5 nM IC50), P102 (TLYALSHAVNSYFDVD, 6.8 nM), and P103 (LYYKEDKTSLSASAAS, 95 nM) were tested in an atherosclerosis model (Apoe(-/-) mice on western diet)...
January 13, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28077677/pharmacological-rescue-of-diabetic-skeletal-stem-cell-niches
#4
Ruth Tevlin, Eun Young Seo, Owen Marecic, Adrian McArdle, Xinming Tong, Bryan Zimdahl, Andrey Malkovskiy, Rahul Sinha, Gunsagar Gulati, Xiyan Li, Taylor Wearda, Rachel Morganti, Michael Lopez, Ryan C Ransom, Christopher R Duldulao, Melanie Rodrigues, Allison Nguyen, Michael Januszyk, Zeshaan Maan, Kevin Paik, Kshemendra-Senarath Yapa, Jayakumar Rajadas, Derrick C Wan, Geoffrey C Gurtner, Michael Snyder, Philip A Beachy, Fan Yang, Stuart B Goodman, Irving L Weissman, Charles K F Chan, Michael T Longaker
Diabetes mellitus (DM) is a metabolic disease frequently associated with impaired bone healing. Despite its increasing prevalence worldwide, the molecular etiology of DM-linked skeletal complications remains poorly defined. Using advanced stem cell characterization techniques, we analyzed intrinsic and extrinsic determinants of mouse skeletal stem cell (mSSC) function to identify specific mSSC niche-related abnormalities that could impair skeletal repair in diabetic (Db) mice. We discovered that high serum concentrations of tumor necrosis factor-α directly repressed the expression of Indian hedgehog (Ihh) in mSSCs and in their downstream skeletogenic progenitors in Db mice...
January 11, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/28044009/clot-friction-variation-with-fibrin-content-implications-for-resistance-to-thrombectomy
#5
Gillian M Gunning, Kevin McArdle, Mahmood Mirza, Sharon Duffy, Michael Gilvarry, Patrick A Brouwer
BACKGROUND: Despite significant advancements in the procedural efficacy of mechanical thrombectomy in patients with ischemic stroke in recent years, there still remains a portion of the population that does not achieve good recanalization. The reasons for this may be varied. We hypothesized that static friction between the clot and the vessel, or catheter wall might contribute to the difficulty in removing the clot. OBJECTIVE: To determine if there is a relationship between clot composition and the resistance to sliding (friction) which might contribute to resistance to clot removal...
January 2, 2017: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/28027450/enabling-1536-well-high-throughput-cell-based-screening-through-the-application-of-novel-centrifugal-plate-washing
#6
Sinead Knight, Helen Plant, Lisa McWilliams, David Murray, Rebecca Dixon-Steele, Anet Varghese, Paul Harper, Anna Ramne, Paula McArdle, Susanna Engberg, Neil Bennett, Carolyn Blackett, Mark Wigglesworth
Cell-based assays have long been important within hit discovery paradigms; however, improving the disease relevance of the assay system can positively affect the translation of small-molecule drug discovery, especially if adopted in the initial hit identification assay. Consequently, there is an increasing need for disease-relevant assay systems capable of running at large scale, including the use of induced pluripotent stem cells and donor-derived primary cells. Major hurdles to adopting these assays for high-throughput screening are the cost, availability of cells, and complex protocols...
December 1, 2016: Journal of Biomolecular Screening
https://www.readbyqxmd.com/read/28024799/assessment-of-older-patients-with-cancer-edmonton-frail-scale-efs-as-a-predictor-of-adverse-outcomes-in-older-patients-undergoing-radiotherapy
#7
Lorna G Keenan, Michelle O'Brien, Tim Ryan, Mary Dunne, Orla McArdle
OBJECTIVE: In this study we evaluate the usefulness of the Edmonton Frail Scale (EFS) in predicting which older patients are at risk of developing serious toxicities during radiotherapy. MATERIALS AND METHODS: This prospective study was carried out over an 18month period. Our primary aim was to examine the Edmonton Frail Scale (EFS) as a predictor of toxicity in patients over 70years undergoing radical radiotherapy for any malignant diagnosis. RESULTS: 63 patients were recruited: 29% experienced grade 3 or greater toxicities, with very few having multiple grade 3 or greater toxicities...
December 23, 2016: Journal of Geriatric Oncology
https://www.readbyqxmd.com/read/28002826/the-capn2-capn8-locus-on-chromosome-1q-is-associated-with-variation-in-serum-alpha-carotene-concentrations
#8
Christopher R D'Adamo, Valerie J Dawson, Kathleen A Ryan, Laura M Yerges-Armstrong, Richard D Semba, Nanette I Steinle, Braxton D Mitchell, Alan R Shuldiner, Patrick F McArdle
BACKGROUND/AIMS: Alpha-carotene is a provitamin A carotenoid present in fruits and vegetables. Higher serum concentrations of α-carotene have been associated with lower risk of cancer and all-cause mortality. Previous studies have suggested that genetic variants influence serum concentrations of provitamin A carotenoids, but to date no variants have been robustly associated with serum α-carotene concentrations. The aim of this study was to identify genetic associations with serum α-carotene concentrations using the genome-wide association study (GWAS) approach...
December 22, 2016: Journal of Nutrigenetics and Nutrigenomics
https://www.readbyqxmd.com/read/27997041/genetic-variation-at-16q24-2-is-associated-with-small-vessel-stroke
#9
Matthew Traylor, Rainer Malik, Mike A Nalls, Ioana Cotlarciuc, Farid Radmanesh, Gudmar Thorleifsson, Ken B Hanscombe, Carl Langefeld, Danish Saleheen, Natalia S Rost, Idil Yet, Tim D Spector, Jordana T Bell, Eilis Hannon, Jonathan Mill, Ganesh Chauhan, Stephanie Debette, Joshua C Bis, W T Longstreth, M Arfan Ikram, Lenore J Launer, Sudha Seshadri, Jordi Jimenez-Conde, John W Cole, Reinhold Schmidt, Agnieszka Słowik, Robin Lemmens, Arne Lindgren, Olle Melander, Raji P Grewal, Ralph L Sacco, Tatjana Rundek, Kathryn Rexrode, Donna K Arnett, Julie A Johnson, Oscar R Benavente, Sylvia Wasssertheil-Smoller, Jin-Moo Lee, Sara L Pulit, Quenna Wong, Stephen S Rich, Paul I W de Bakker, Patrick F McArdle, Daniel Woo, Christopher D Anderson, Huichun Xu, Laura Heitsch, Myriam Fornage, Christina Jern, Kari Stefansson, Unnur Thorsteinsdottir, Solveig Gretarsdottir, Cathryn M Lewis, Pankaj Sharma, Cathie L M Sudlow, Peter M Rothwell, Giorgio B Boncoraglio, Vincent Thijs, Chris Levi, James F Meschia, Jonathan Rosand, Steven J Kittner, Braxton D Mitchell, Martin Dichgans, Bradford B Worrall, Hugh S Markus
OBJECTIVE: Genome-wide association studies (GWAS) have been successful at identifying associations with stroke and stroke subtypes, but have not yet identified any associations solely with small vessel stroke (SVS). SVS comprises a quarter of all ischaemic stroke and is a major manifestation of cerebral small vessel disease, the primary cause of vascular cognitive impairment. Studies across neurological traits have shown younger onset cases have an increased genetic burden. We leveraged this increased genetic burden by performing an age-at-onset informed GWAS meta-analysis, including a large younger onset SVS population, to identify novel associations with stroke...
December 20, 2016: Annals of Neurology
https://www.readbyqxmd.com/read/27994672/an-in-vitro-inverted-vertical-invasion-assay-to-avoid-manipulation-of-rare-or-sensitive-cell-types
#10
Tanner J McArdle, Brenda M Ogle, Felicite K Noubissi
The ability to quantify cell migration and invasion is critical in the study of cancer metastasis. Current invasion assays, such as the Boyden Chamber, present difficulties in the measurement of the invasion of cells that are few in number and are intrinsically tied to the cell microenvironment. There exists a need for a three-dimensional invasion assay that is easily reproduced, accessible for most laboratories, and requires no displacement of cells from their original microenvironment. Here we present a simple design for an inverted vertical invasion assay able to assess the invasion capabilities of cells in a three dimensional, extracellular matrix-based environment without displacement from the original culture location...
2016: Journal of Cancer
https://www.readbyqxmd.com/read/27989332/neuropathic-and-myopathic-pain
#11
REVIEW
Anthony C Rodrigues, Peter B Kang
The evaluation and management of childhood pain syndromes of neuromuscular origin have distinct challenges, as the patterns of disease presentation and the ability of a child to describe symptoms may differ from that of an adult. Advances in scientific and clinical knowledge are leading to significant progress in the care of affected children. The genetic origins of Fabry disease and the inherited form of erythromelalgia are better understood. The increasing interest in neuroimmunology among pediatric neurologists has led to more sophisticated diagnostic and therapeutic approaches...
August 2016: Seminars in Pediatric Neurology
https://www.readbyqxmd.com/read/27941513/experiences-and-needs-of-families-with-a-relative-admitted-to-an-adult-intensive-care-unit-a-qualitative-systematic-review-protocol
#12
Kate Kynoch, Cara Joyce Cabilan, Annie McArdle
The objective of the proposed review is to determine the best available qualitative evidence to guide healthcare workers when providing care and support for families of relatives in an adult intensive care unit (ICU). The specific objective is to explore the experiences and needs of families with a relative in an adult ICU.
November 2016: JBI Database of Systematic Reviews and Implementation Reports
https://www.readbyqxmd.com/read/27922636/dna-methylation-and-substance-use-risk-a-prospective-genome-wide-study-spanning-gestation-to-adolescence
#13
C A M Cecil, E Walton, R G Smith, E Viding, E J McCrory, C L Relton, M Suderman, J-B Pingault, W McArdle, T R Gaunt, J Mill, E D Barker
Epigenetic processes have been implicated in addiction; yet, it remains unclear whether these represent a risk factor and/or a consequence of substance use. Here, we believe we conducted the first genome-wide, longitudinal study to investigate whether DNA methylation patterns in early life prospectively associate with substance use in adolescence. The sample comprised of 244 youth (51% female) from the Avon Longitudinal Study of Parents and Children (ALSPAC), with repeated assessments of DNA methylation (Illumina 450k array; cord blood at birth, whole blood at age 7) and substance use (tobacco, alcohol and cannabis use; age 14-18)...
December 6, 2016: Translational Psychiatry
https://www.readbyqxmd.com/read/27918182/theory-guided-exploration-with-structural-equation-model-forests
#14
Andreas M Brandmaier, John J Prindle, John J McArdle, Ulman Lindenberger
Structural equation model (SEM) trees, a combination of SEMs and decision trees, have been proposed as a data-analytic tool for theory-guided exploration of empirical data. With respect to a hypothesized model of multivariate outcomes, such trees recursively find subgroups with similar patterns of observed data. SEM trees allow for the automatic selection of variables that predict differences across individuals in specific theoretical models, for instance, differences in latent factor profiles or developmental trajectories...
December 2016: Psychological Methods
https://www.readbyqxmd.com/read/27913310/targeted-disruption-of-the-orphan-receptor-gpr151-does-not-alter-pain-related-behaviour-despite-a-strong-induction-in-dorsal-root-ganglion-expression-in-a-model-of-neuropathic-pain
#15
Fiona E Holmes, Niall Kerr, Ying-Ju Chen, Penny Vanderplank, Craig A McArdle, David Wynick
BACKGROUND: Gpr151 is an orphan GPCR whose function is unknown. The restricted pattern of neuronal expression in the habenula, dorsal horn of the spinal cord and dorsal root ganglion plus homology with the galanin family of receptors imply a role in nociception. RESULTS: Real-time quantitative RT-PCR demonstrated a 49.9±2.9 fold highly significant (P<0.001) increase in Gpr151 mRNA expression in the dorsal root ganglion 7days after the spared nerve injury model of neuropathic pain...
January 2017: Molecular and Cellular Neurosciences
https://www.readbyqxmd.com/read/27905292/the-effect-of-iron-deficiency-on-the-temporal-changes-in-the-expression-of-genes-associated-with-fat-metabolism-in-the-pregnant-rat
#16
Susan M Hay, Harry J McArdle, Helen E Hayes, Valerie J Stevens, William D Rees
Iron is essential for the oxidative metabolism of lipids. Lipid metabolism changes during gestation to meet the requirements of the growing fetus and to prepare for lactation. The temporal effects of iron deficiency during gestation were studied in female rats fed complete or iron-deficient diets. Plasma triglycerides were elevated in the iron-deficient group throughout gestation. There were time-dependent changes in the triglyceride content of the maternal liver, falling at the midpoint of gestation and then increasing on d21...
November 2016: Physiological Reports
https://www.readbyqxmd.com/read/27902497/service-providers-attitudes-toward-athletes-with-eating-disorders
#17
Siobhain McArdle, Mary M Meade, Emma Burrows
OBJECTIVE: This study explored the nature and extent of Athlete Support Personnel's (ASP's) attitudes and beliefs toward athletes with symptoms of anorexia nervosa (AN) compared with those with symptoms of depression. DESIGN: A cross-sectional study with a survey instrument. SETTING: Sport and Exercise Science Professional Bodies and Associations in the Republic of Ireland, Northern Ireland, and mainland United Kingdom. PARTICIPANTS: One hundred fifty-two ASP...
November 29, 2016: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/27899787/mcardle-disease-misdiagnosed-as-meningitis
#18
Renata Siciliani Scalco, Sherryl Chatfield, Muhammad Hyder Junejo, Suzanne Booth, Jatin Pattni, Richard Godfrey, Ros Quinlivan
BACKGROUND McArdle disease is a glycogen storage disorder mainly characterized by exercise intolerance. Prolonged muscle contracture is also a feature of this condition and may lead to rhabdomyolysis (RM), which is a serious event characterized by acute skeletal muscle damage.  CASE REPORT A 44-year-old female patient presented with an acute contracture of the posterior neck muscles, causing severe nuchal rigidity. The contracture was induced during a dental extraction as she held her mouth open for a prolonged period, with her neck in a rigid position...
November 30, 2016: American Journal of Case Reports
https://www.readbyqxmd.com/read/27882625/review-of-high-risk-features-of-cutaneous-squamous-cell-carcinoma-and-discrepancies-between-the-american-joint-committee-on-cancer-and-nccn-clinical-practice-guidelines-in-oncology
#19
REVIEW
Samuel Lamarre Skulsky, Barry O'Sullivan, Orla McArdle, Mary Leader, Muireann Roche, Peter J Conlon, James Paul O'Neill
Cutaneous squamous cell carcinoma (SCC) is a malignancy that arises from epidermal keratinocytes. Although the majority of cutaneous SCC cases are easily treated without further complication, some behave more aggressively and carry a poor prognosis. These "high-risk" cutaneous SCCs commonly originate in the head and neck and have an increased tendency toward recurrence, local invasion, and distant metastasis. Factors for high-risk cutaneous SCC include large size (>2 cm), a deeply invasive lesion (>2 mm), incomplete excision, high-grade/desmoplastic lesions, perineural invasion (PNI), lymphovascular invasion, immunosuppression, and high-risk anatomic locations...
November 24, 2016: Head & Neck
https://www.readbyqxmd.com/read/27876841/accuracy-of-pulse-interval-timing-in-ambulatory-blood-pressure-measurement
#20
Sarah A Kane, James R Blake, Frank J McArdle, Philip Langley, Andrew J Sims
Blood pressure (BP) monitors rely on pulse detection. Some blood pressure monitors use pulse timings to analyse pulse interval variability for arrhythmia screening, but this assumes that the pulse interval timings detected from BP cuffs are accurate compared with RR intervals derived from ECG. In this study we compared the accuracy of pulse intervals detected using an ambulatory blood pressure monitor (ABPM) with single lead ECG. Twenty participants wore an ABPM for three hours and a data logger which synchronously measured cuff pressure and ECG...
November 23, 2016: Scientific Reports
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