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Saul Wilson, Kingsley O Abode-Iyamah, John W Miller, Chandan G Reddy, Sina Safayi, Douglas C Fredericks, Nicholas D Jeffery, Nicole A DeVries-Watson, Sara K Shivapour, Stephanus Viljoen, Brian D Dalm, Katherine N Gibson-Corley, Michael D Johnson, George T Gillies, Matthew A Howard
OBJECTIVE: To develop a large animal model of spinal cord injury (SCI), for use in translational studies of spinal cord stimulation (SCS) in the treatment of spasticity. We seek to establish thresholds for the SCS parameters associated with reduction of post-SCI spasticity in the pelvic limbs, with implications for patients. STUDY DESIGN: The weight-drop method was used to create a moderate SCI in adult sheep, leading to mild spasticity in the pelvic limbs. Electrodes for electromyography (EMG) and an epidural spinal cord stimulator were then implanted...
October 19, 2016: Journal of Spinal Cord Medicine
Chun Chao, Michael J Silverberg, Tracy A Becerra, Douglas A Corley, Christopher D Jensen, Qiaoling Chen, Virginia P Quinn
BACKGROUND: Human papillomavirus vaccination may result in lowered intention to be screened for cervical cancer, potentially leading to gaps in screening coverage and avoidable cervical cancer diagnoses. OBJECTIVE: To examine the association between human papillomavirus vaccination and subsequent cervical cancer screening initiation and adherence to recommended screening intervals to detect gaps in screening coverage and inform future prevention efforts. STUDY DESIGN: A retrospective cohort study was conducted in two distinct cohorts of female members of Kaiser Permanente Southern California, a large integrated healthcare delivery system...
October 13, 2016: American Journal of Obstetrics and Gynecology
Chelsie E Benca, Jaime L Derringer, Robin P Corley, Susan E Young, Matthew C Keller, John K Hewitt, Naomi P Friedman
Executive functions (EFs) have been proposed as an endophenotype for psychopathology because EF deficits are associated with most psychiatric disorders. To examine this hypothesis, we derived polygenic risk scores for autism, attention-deficit/hyperactive disorder (ADHD), bipolar disorder, major depression (MDD), and schizophrenia, using genome-wide data from the Psychiatric Genomics Consortium as discovery samples. We then examined the relationships between these polygenic risk scores and three separable EF components measured with a latent variable model...
October 14, 2016: Behavior Genetics
Aditya Stanam, Katherine N Gibson-Corley, Laurie Love-Homan, Nnamdi Ihejirika, Andrean L Simons
Erlotinib has demonstrated poor clinical response rates for head and neck squamous cell carcinoma (HNSCC) to date and the majority of respondents acquire resistance to erlotinib relatively quickly. To elucidate novel pathways involved in erlotinib resistance, we compared the gene expression profiles of erlotinib-resistant (ER) vs. erlotinib-sensitive (ES) HNSCC cell lines. Enrichment analysis of microarray data revealed a deregulation of the IL-1 signaling pathway in ER versus ES-HNSCC cells. Gene expression of interleukin-1 alpha (IL1A) and interleukin-1 beta (IL1B) were significantly upregulated by > 2 fold in ER-SQ20B and ER-CAL 27 cells compared to their respective ES-cells...
October 12, 2016: Oncotarget
Chyke A Doubeni, Douglas A Corley, Virginia P Quinn, Christopher D Jensen, Ann G Zauber, Michael Goodman, Jill R Johnson, Shivan J Mehta, Tracy A Becerra, Wei K Zhao, Joanne Schottinger, V Paul Doria-Rose, Theodore R Levin, Noel S Weiss, Robert H Fletcher
OBJECTIVE: Screening colonoscopy's effectiveness in reducing colorectal cancer mortality risk in community populations is unclear, particularly for right-colon cancers, leading to recommendations against its use for screening in some countries. This study aimed to determine whether, among average-risk people, receipt of screening colonoscopy reduces the risk of dying from both right-colon and left-colon/rectal cancers. DESIGN: We conducted a nested case-control study with incidence-density matching in screening-eligible Kaiser Permanente members...
October 12, 2016: Gut
Yan Xiu, Wingel Y Xue, Allyn Lambertz, Mariah Leidinger, Katherine Gibson-Corley, Chen Zhao
Previously we have shown that loss of non-canonical NF-κB signaling impairs self-renewal of hematopoietic stem/progenitor cells (HSPCs). This prompted us to investigate whether persistent activation of the non-canonical NF-κB signaling will have supportive effects on HSPC self-renewal. NF-κB-inducing kinase (NIK) is an important kinase that mainly activates the non-canonical pathway through directly phosphorylating IKKα. In contrast to our expectations, constitutive activation of NIK in the hematopoietic system leads to bone marrow failure and postnatal lethality due to intrinsic impairment of HSPC self-renewal and extrinsic disruption of bone marrow microenvironment through enhancing osteoclastogenesis...
October 12, 2016: Stem Cells
Alexander Lee, Christopher D Jensen, Amy R Marks, Wei K Zhao, Chyke A Doubeni, Ann G Zauber, Virginia P Quinn, Theodore R Levin, Douglas A Corley
BACKGROUND AND AIMS: Endoscopist fatigue may impact colonoscopy quality, but prior studies conflict, and minimal data exist from community-based practices where most colonoscopies are performed. METHODS: Within a large, community-based integrated healthcare system, we evaluated the associations among 4 measures of endoscopist fatigue and colonoscopic adenoma detection during the years 2010 to 2013. Fatigue measures included afternoon versus morning colonoscopy and the number of GI procedures performed before a given colonoscopy, including consideration of prior procedure complexity...
October 1, 2016: Gastrointestinal Endoscopy
Afshin Varzavand, Will Hacker, Deqin Ma, Katherine N Gibson-Corley, Maria Hawayek, Omar J Tayh, James A Brown, Michael D Henry, Christopher S Stipp
Existing anti-cancer strategies focused on disrupting integrin functions in tumor cells or tumor-involved endothelial cells have met limited success. An alternative strategy is to augment integrin-mediated pathways that suppress tumor progression, but how integrins can signal to restrain malignant behavior remains unclear. To address this issue, we generated an in vivo model of prostate cancer metastasis via depletion of α3β1 integrin, a correlation observed in a significant proportion of prostate cancers...
September 28, 2016: Cancer Research
Aine Ito, Andrea E Martin, Mante S Nieuwland
We used event-related potentials (ERP) to investigate whether Spanish-English bilinguals preactivate form and meaning of predictable words. Participants read high-cloze sentence contexts (e.g., "The student is going to the library to borrow a . . ."), followed by the predictable word (book), a word that was form-related (hook) or semantically related (page) to the predictable word, or an unrelated word (sofa). Word stimulus onset synchrony (SOA) was 500 ms (Experiment 1) or 700 ms (Experiment 2). In both experiments, all nonpredictable words elicited classic N400 effects...
September 26, 2016: Journal of Experimental Psychology. Learning, Memory, and Cognition
Simon R Cox, David Alexander Dickie, Stuart J Ritchie, Sherif Karama, Alison Pattie, Natalie A Royle, Janie Corley, Benjamin S Aribisala, Maria Valdés Hernández, Susana Muñoz Maniega, John M Starr, Mark E Bastin, Alan C Evans, Joanna M Wardlaw, Ian J Deary
OBJECTIVE: To investigate how associations between education and brain structure in older age were affected by adjusting for IQ measured at age 11. METHODS: We analyzed years of full-time education and measures from an MRI brain scan at age 73 in 617 community-dwelling adults born in 1936. In addition to average and vertex-wise cortical thickness, we measured total brain atrophy and white matter tract fractional anisotropy. Associations between brain structure and education were tested, covarying for sex and vascular health; a second model also covaried for age 11 IQ...
September 24, 2016: Neurology
Meredith Corley, Alain Laderach
Random base-pairing interactions between messenger RNAs and noncoding RNAs can reduce translation efficiency.
2016: ELife
Andrew G Corley, Clifton P Thornton, Nancy E Glass
INTRODUCTION: Neglected tropical diseases produce an enormous burden on many of the poorest and most disenfranchised populations in sub-Saharan Africa. Similar to other developing areas throughout the world, this region's dearth of skilled health providers renders Western-style primary care efforts to address such diseases unrealistic. Consequently, many countries rely on their corps of nurses and community health workers to engage with underserved and hard-to-reach populations in order provide interventions against these maladies...
September 2016: PLoS Neglected Tropical Diseases
Michael J Corley, Christian Dye, Michelle L D'Antoni, Mary Margaret Byron, Kaahukane Leite-Ah Yo, Annette Lum-Jones, Beau Nakamoto, Victor Valcour, Ivo SahBandar, Cecilia M Shikuma, Lishomwa C Ndhlovu, Alika K Maunakea
Monocytes/macrophages contribute to the neuropathogenesis of HIV-related cognitive impairment (CI); however, considerable gaps in our understanding of the precise mechanisms driving this relationship remain. Furthermore, whether a distinct biological profile associated with HIV-related CI resides in immune cell populations remains unknown. Here, we profiled DNA methylomes and transcriptomes of monocytes derived from HIV-infected individuals with and without CI using genome-wide DNA methylation and gene expression profiling...
2016: Scientific Reports
Whitney E Melroy-Greif, Matthew A Simonson, Robin P Corley, Sharon M Lutz, John E Hokanson, Marissa A Ehringer
INTRODUCTION: Cigarette smoking is a physiologically harmful habit. Nicotinic acetylcholine receptors (nAChRs) are bound by nicotine and upregulated in response to chronic exposure to nicotine. It is known that upregulation of these receptors is not due to a change in mRNA of these genes, however, more precise details on the process are still uncertain, with several plausible hypotheses describing how nAChRs are upregulated. We have manually curated a set of genes believed to play a role in nicotine-induced nAChR upregulation...
August 19, 2016: Nicotine & Tobacco Research: Official Journal of the Society for Research on Nicotine and Tobacco
Aaron P Thrift, Lesley A Anderson, Liam J Murray, Michael B Cook, Nicholas J Shaheen, Joel H Rubenstein, Hashem B El-Serag, Thomas L Vaughan, Jennifer L Schneider, David C Whiteman, Douglas A Corley
OBJECTIVES: Regular use of nonsteroidal anti-inflammatory drugs (NSAIDs) is associated with a reduced risk of esophageal adenocarcinoma. Epidemiological studies examining the association between NSAID use and the risk of the precursor lesion, Barrett's esophagus, have been inconclusive. METHODS: We analyzed pooled individual-level participant data from six case-control studies of Barrett's esophagus in the Barrett's and Esophageal Adenocarcinoma Consortium (BEACON)...
August 30, 2016: American Journal of Gastroenterology
Mariany Ashanty Morales, Bianca Marie Mendoza, Laura Corley Lavine, Mark Daniel Lavine, Douglas Bruce Walsh, Fang Zhu
Quantitative real-time PCR (qRT-PCR) is an extensively used, high-throughput method to analyze transcriptional expression of genes of interest. An appropriate normalization strategy with reliable reference genes is required for calculating gene expression across diverse experimental conditions. In this study, we aim to identify the most stable reference genes for expression studies of xenobiotic adaptation in Tetranychus urticae, an extremely polyphagous herbivore causing significant yield reduction of agriculture...
2016: International Journal of Biological Sciences
C M Rickard, M Edwards, A J Spooner, G Mihala, N Marsh, J Best, T Wendt, I Rapchuk, S Gabriel, B Thomson, A Corley, J F Fraser
PURPOSE: To improve jugular central venous access device (CVAD) securement, prevent CVAD failure (composite: dislodgement, occlusion, breakage, local or bloodstream infection), and assess subsequent trial feasibility. MATERIALS AND METHODS: Study design was a 4-arm, parallel, randomized, controlled, nonblinded, pilot trial. Patients received CVAD securement with (i) suture+bordered polyurethane (suture + BPU; control), (ii) suture+absorbent dressing (suture + AD), (iii) sutureless securement device+simple polyurethane (SSD+SPU), or (iv) tissue adhesive+simple polyurethane (TA+SPU)...
June 21, 2016: Journal of Critical Care
Douglas Fredericks, Emily B Petersen, Nicole Watson, Nicole Grosland, Katherine Gibson-Corley, Joseph Smucker
BACKGROUND: The drawbacks of iliac crest autograft as graft material for spine fusion are well reported. Despite continued modifications to improve bone healing capacity, the efficacy of synthetic graft materials as stand-alone replacements remains uncertain. The rabbit posterolateral fusion model is an established environment for testing of fusion concepts. It offers the opportunity to obtain radiographic, biomechanical and histological data on novel fusion materials. The objective of this study was to compare the spine fusion capability of two synthetic bone graft products in an established rabbit posterolateral spine fusion (PLF) model: Signafuse® Bioactive Bone Graft Putty and Actifuse® ABX...
2016: Iowa Orthopaedic Journal
Puya Gharahkhani, Rebecca C Fitzgerald, Thomas L Vaughan, Claire Palles, Ines Gockel, Ian Tomlinson, Matthew F Buas, Andrea May, Christian Gerges, Mario Anders, Jessica Becker, Nicole Kreuser, Tania Noder, Marino Venerito, Lothar Veits, Thomas Schmidt, Hendrik Manner, Claudia Schmidt, Timo Hess, Anne C Böhmer, Jakob R Izbicki, Arnulf H Hölscher, Hauke Lang, Dietmar Lorenz, Brigitte Schumacher, Andreas Hackelsberger, Rupert Mayershofer, Oliver Pech, Yogesh Vashist, Katja Ott, Michael Vieth, Josef Weismüller, Markus M Nöthen, Stephen Attwood, Hugh Barr, Laura Chegwidden, John de Caestecker, Rebecca Harrison, Sharon B Love, David MacDonald, Paul Moayyedi, Hans Prenen, R G Peter Watson, Prasad G Iyer, Lesley A Anderson, Leslie Bernstein, Wong-Ho Chow, Laura J Hardie, Jesper Lagergren, Geoffrey Liu, Harvey A Risch, Anna H Wu, Weimin Ye, Nigel C Bird, Nicholas J Shaheen, Marilie D Gammon, Douglas A Corley, Carlos Caldas, Susanne Moebus, Michael Knapp, Wilbert H M Peters, Horst Neuhaus, Thomas Rösch, Christian Ell, Stuart MacGregor, Paul Pharoah, David C Whiteman, Janusz Jankowski, Johannes Schumacher
BACKGROUND: Oesophageal adenocarcinoma represents one of the fastest rising cancers in high-income countries. Barrett's oesophagus is the premalignant precursor of oesophageal adenocarcinoma. However, only a few patients with Barrett's oesophagus develop adenocarcinoma, which complicates clinical management in the absence of valid predictors. Within an international consortium investigating the genetics of Barrett's oesophagus and oesophageal adenocarcinoma, we aimed to identify novel genetic risk variants for the development of Barrett's oesophagus and oesophageal adenocarcinoma...
October 2016: Lancet Oncology
Juan Pablo Perea-Rodriguez, Eduardo Fernandez-Duque, Margaret Corley, Andrea Spence-Aizenberg
No abstract text is available yet for this article.
July 2016: Evolutionary Anthropology
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