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Shane A Grace, Angela M Sutton, Eric S Armbrecht, Claudia I Vidal, Ilana S Rosman, Maria Y Hurley
Langerhans cell histiocytosis (LCH) is a proliferative disorder of Langerhans cells that can be challenging to distinguish histologically from Langerhans cell (LC) hyperplasia, seen in a variety of inflammatory dermatoses. Lesional cells in both entities demonstrate positive staining for CD1a and S100. Previous studies have demonstrated positive staining of fascin, CD31, and p53 in cases of LCH, but currently, no studies have compared the staining profiles of these markers between LCH and LC hyperplasia. The authors compared immunohistochemical staining profiles of LCH (n = 15) and various inflammatory dermatoses with LC hyperplasia (n = 15) using fascin, CD31, and p53...
October 18, 2016: American Journal of Dermatopathology
Samuel N Rodman, Jacquelyn M Spence, Tyler J Ronnfeldt, Yueming Zhu, Shane R Solst, Rebecca A O'Neill, Bryan G Allen, Xiangming Guan, Douglas R Spitz, Melissa A Fath
The goal of this study was to determine if depletion of glutathione (GSH) and inhibition of thioredoxin (Trx) reductase (TrxR) activity could enhance radiation responses in human breast cancer stem cells by a mechanism involving thiol-dependent oxidative stress. The following were used to inhibit GSH and Trx metabolism: buthionine sulfoximine (BSO), a GSH synthesis inhibitor; sulfasalazine (SSZ), an inhibitor of xc(-) cysteine/glutamate antiporter; auranofin (Au), a thioredoxin reductase inhibitor; or 2-AAPA, a GSH-reductase inhibitor...
September 19, 2016: Radiation Research
Shane W English, Lauralyn McIntyre, Dean Fergusson, Alexis Turgeon, Marlise P Dos Santos, Cheemun Lum, Michaël Chassé, John Sinclair, Alan Forster, Carl van Walraven
OBJECTIVE: To create an accurate prediction model using variables collected in widely available health administrative data records to identify hospitalizations for primary subarachnoid hemorrhage (SAH). METHODS: A previously established complete cohort of consecutive primary SAH patients was combined with a random sample of control hospitalizations. Chi-square recursive partitioning was used to derive and internally validate a model to predict the probability that a patient had primary SAH (due to aneurysm or arteriovenous malformation) using health administrative data...
October 11, 2016: Neurology
Shane L Koppenhaver, Michael J Walker, Charles Rettig, Joel Davis, Chenae Nelson, Jonathan Su, Cesar Fernández-de-Las-Peñas, Jeffrey J Hebert
OBJECTIVE: To investigate the relationship between dry needling-induced twitch response and change in pain, disability, nociceptive sensitivity, and lumbar multifidus muscle function, in patients with low back pain (LBP). DESIGN: Quasi-experimental study. SETTING: Department of Defense Academic Institution. PARTICIPANTS: Sixty-six patients with mechanical LBP (38 men, 28 women, age: 41.3 [9.2] years). INTERVENTIONS: Dry needling treatment to the lumbar multifidus muscles between L3 and L5 bilaterally...
May 20, 2016: Physiotherapy
Euphemia W Mu, Jesse M Lewin, Mary L Stevenson, Shane A Meehan, John A Carucci, Daniel S Gareau
Importance: Confocal microscopy has the potential to provide rapid bedside pathologic analysis, but clinical adoption has been limited in part by the need for physician retraining to interpret grayscale images. Digitally stained confocal mosaics (DSCMs) mimic the colors of routine histologic specimens and may increase adaptability of this technology. Objective: To evaluate the accuracy and precision of 3 physicians using DSCMs before and after training to detect basal cell carcinoma (BCC) and squamous cell carcinoma (SCC) in Mohs micrographic surgery fresh-tissue specimens...
September 7, 2016: JAMA Dermatology
Annette C Ryan, Ian C Dodd, Shane A Rothwell, Ros Jones, Francois Tardieu, Xavier Draye, William J Davies
There is increasing interest in rapidly identifying genotypes with improved water use efficiency, exemplified by the development of whole plant phenotyping platforms that automatically measure plant growth and water use. Transpirational responses to atmospheric vapour pressure deficit (VPD) and whole plant water use efficiency (WUE, defined as the accumulation of above ground biomass per unit of water used) were measured in 100 maize (Zea mays L.) genotypes. Using a glasshouse based phenotyping platform with naturally varying VPD (1...
October 2016: Plant Science: An International Journal of Experimental Plant Biology
Alexandre A Barros, Shane Browne, Carlos Oliveira, Estevão Lima, Ana Rita C Duarte, Kevin E Healy, Rui L Reis
Upper urinary tract urothelial carcinoma (UTUC) accounts for 5-10% of urothelial carcinomas and is a disease that has not been widely studied as carcinoma of the bladder. To avoid the problems of conventional therapies, such as the need for frequent drug instillation due to poor drug retention, we developed a biodegradable ureteral stent (BUS) impregnated by supercritical fluid CO2 (scCO2) with the most commonly used anti-cancer drugs, namely paclitaxel, epirubicin, doxorubicin, and gemcitabine. The release kinetics of anti-cancer therapeutics from drug-eluting stents was measured in artificial urine solution (AUS)...
August 31, 2016: International Journal of Pharmaceutics
Shane P Duggan, Fiona M Behan, Murat Kirca, Abdul Zaheer, Sarah A McGarrigle, John V Reynolds, Gisela M F Vaz, Mathias O Senge, Dermot Kelleher
Barrett's oesophagus (BO), an intestinal-type metaplasia (IM), typically arising in conjunction with gastro-oesophageal reflux disease, is a prominent risk factor for the development of oesophageal adenocarcinoma (OAC). The molecular similarities between IM and normal intestinal tissues are ill-defined. Consequently, the contribution of intestine-enriched factors expressed within BO to oncogenesis is unclear. Herein, using transcriptomics we define the intestine-enriched genes expressed in meta-profiles of BO and OAC...
2016: Scientific Reports
Shane R Wurdeman, Kendra K Schmid, Sara A Myers, Adam L Jacobsen, Nicholas Stergiou
OBJECTIVE: To determine changes in average daily step count (ADSC) and 6-minute walk test (6MWT) due to use of low-activity feet (LA) and high-activity energy-storage-and-return (ESAR) feet, and examine the sensitivity of these measures to properly classify different prosthetic feet. DESIGN: Individuals with transtibial amputations (n = 28) participated in a 6-week, randomized crossover study. During separate 3-week periods, participants wore either a LA foot (eg, solid-ankle-cushioned-heel) or an ESAR foot...
August 31, 2016: American Journal of Physical Medicine & Rehabilitation
Shubhagata Das, Subir Sarker, Seyed Ali Ghorashi, Jade K Forwood, Shane R Raidal
Beak and feather disease virus (BFDV) threatens a wide range of endangered psittacine birds worldwide. In this study, we assessed a novel PCR assay and genetic screening method using high-resolution melt (HRM) curve analysis for BFDV targeting the capsid (Cap) gene (HRM-Cap) alongside conventional PCR detection as well as a PCR method that targets a much smaller fragment of the virus genome in the replicase initiator protein (Rep) gene (HRM-Rep). Limits of detection, sensitivity, specificity and discriminatory power for differentiating BFDV sequences were compared...
November 2016: Journal of Virological Methods
Paul S Kelly, Shane McSweeney, Orla Coleman, Sara Carillo, Michael Henry, Deepak Chandran, Andrew Kellett, Jonathan Bones, Martin Clynes, Paula Meleady, Niall Barron
The biopharmaceutical industry has invested considerably in the implementation of single-use disposable bioreactors in place of or in addition to their stainless steel counterparts. This new wave of construction materials for disposable bioprocess containers encompass a plethora of uncharacterised secondary compounds that, when in contact with the culture media, can leach, contaminating the bioprocess. One such cytotoxic leachable already receiving attention is bis(2,4-di-tert-butylphenyl)-phosphate (bDtBPP), a breakdown product of the secondary antioxidant Irgafos 168 in polyethylene-film based bags...
August 24, 2016: Biotechnology Progress
Brooke C Jarvie, Connie M King, Alexander R Hughes, Matthew S Dicken, Christina S Dennison, Shane T Hentges
KEY POINTS: Hypothalamic proopiomelanocortin (POMC) neurons release peptide products that potently inhibit food intake and reduce body weight. These neurons also release the amino acid transmitter GABA, which can inhibit downstream neurons. Although the release of peptide transmitters from POMC neurons is regulated by energy state, whether similar regulation of GABA release might occur had not been examined. The present results show that the GABAergic phenotype of POMC neurons is decreased selectively by caloric deficit and not altered by high-fat diet or stress...
August 17, 2016: Journal of Physiology
Shane Koppenhaver, Robin Embry, John Ciccarello, Justin Waltrip, Rachel Pike, Michael Walker, Cesar Fernández-de-Las-Peñas, Theodore Croy, Timothy Flynn
BACKGROUND: Initial reports suggest that treating myofascial trigger points in the infraspinatus with dry needling may be effective in treating patients with shoulder pain. However, to date, high quality clinical trials and thorough knowledge of the physiologic mechanisms involved is lacking. OBJECTIVES: To examine the effect of dry needling to the infraspinatus muscle on muscle function, nociceptive sensitivity, and shoulder range of motion (ROM) in the symptomatic and asymptomatic shoulders of individuals with unilateral subacromial pain syndrome...
July 21, 2016: Manual Therapy
Oana M Deac, James L Mills, Clair M Gardiner, Barry Shane, Louise Quinn, Øivind Midttun, Adrian McCann, Klaus Meyer, Per M Ueland, Ruzong Fan, Zhaohui Lu, Lawrence C Brody, Anne M Molloy
BACKGROUND: Changes in tryptophan metabolism through the vitamin B-6-dependent kynurenine pathway have been linked to activation of the immune system. OBJECTIVE: We hypothesized that blood concentrations of tryptophan and its catabolites were associated with biomarkers relevant to inflammatory processes in healthy noninflamed subjects. METHODS: Healthy young adults (n = 737) aged 18-28 y without any known diseases or clinical evidence of inflammation provided blood samples for analysis of serum tryptophan/kynurenine metabolites, neopterin, C-reactive protein (CRP), and plasma pyridoxal 5'-phosphate (PLP) with LC-tandem mass spectrometry methodologies...
September 2016: Journal of Nutrition
Estelle D Watson, Shane A Norris, Catherine E Draper, Rachel A Jones, Mireille N M van Poppel, Lisa K Micklesfield
BACKGROUND: Despite the benefits of physical activity during pregnancy, the physiological and psychological changes that occur during this unique period may put women at greater risk of being sedentary. Lifestyle and environmental transitions have left black South African women at increased risk of physical inactivity and associated health risks. Therefore, the aim of this qualitative study was to describe the beliefs regarding physical activity during pregnancy in an urban African population...
2016: BMC Pregnancy and Childbirth
Holly E Barker, Radhika Patel, Martin McLaughlin, Ulrike Schick, Shane Zaidi, Christopher M Nutting, Katie L Newbold, Shreerang Bhide, Kevin J Harrington
Head and neck squamous cell carcinoma (HNSCC) is a leading cause of cancer-related deaths, with increasingly more cases arising due to high-risk human papillomavirus (HPV) infection. Cisplatin-based chemoradiotherapy is a standard-of-care for locally advanced head and neck cancer but is frequently ineffective. Research into enhancing radiation responses as a means of improving treatment outcomes represents a high priority. Here, we evaluated a CHK1 inhibitor (CCT244747) as a radiosensitiser and investigated whether a mechanistically rational triple combination of radiation/paclitaxel/CHK1 inhibitor delivered according to an optimized schedule would provide added benefit...
September 2016: Molecular Cancer Therapeutics
Andrew Orton, Dustin Boothe, Meng Gan, Marcus M Monroe, Ying J Hitchcock, Shane Lloyd
PURPOSE: We aimed to evaluate if use of brachytherapy (BT) is associated with improved survival in patients with oral cavity cancer who do not receive surgery and to analyze patterns of care. METHODS AND MATERIALS: We queried the Surveillance, Epidemiology, and End Results database for patients who received radiation therapy for squamous cell carcinoma of the oral cavity between 1973 and 2012. Patients were grouped by treatment modality: external beam radiotherapy alone vs...
June 27, 2016: Brachytherapy
Jennifer M Dan, Cecilia S Lindestam Arlehamn, Daniela Weiskopf, Ricardo da Silva Antunes, Colin Havenar-Daughton, Samantha M Reiss, Matthew Brigger, Marcella Bothwell, Alessandro Sette, Shane Crotty
Detection of Ag-specific CD4(+) T cells is central to the study of many human infectious diseases, vaccines, and autoimmune diseases. However, such cells are generally rare and heterogeneous in their cytokine profiles. Identification of Ag-specific germinal center (GC) T follicular helper (Tfh) cells by cytokine production has been particularly problematic. The function of a GC Tfh cell is to selectively help adjacent GC B cells via cognate interaction; thus, GC Tfh cells may be stingy cytokine producers, fundamentally different from Th1 or Th17 cells in the quantities of cytokines produced...
August 1, 2016: Journal of Immunology: Official Journal of the American Association of Immunologists
Carl van Walraven, Shane English, Peter C Austin
OBJECTIVE: Previous mathematical analyses of diagnostic tests based on the categorization of a continuous measure have found that test sensitivity and specificity varies significantly by disease prevalence. This study determined if the accuracy of diagnostic codes varied by disease prevalence. STUDY DESIGN: We used data from two previous studies in which the true status of renal disease and primary subarachnoid hemorrhage, respectively, had been determined. In multiple stratified random samples from the two previous studies having varying disease prevalence, we measured the accuracy of diagnostic codes for each disease using sensitivity, specificity, and positive and negative predictive value...
June 3, 2016: Journal of Clinical Epidemiology
Amy Baccari, Michael Cooney, Tamara P Blevins, Lynda A Morrison, Shane Larson, Mojca Skoberne, Robert B Belshe, Jessica B Flechtner, Deborah Long
Measurement of neutralizing antibodies against herpes simplex virus (HSV) is important for evaluation of candidate vaccines. The established plaque-reduction neutralization assay is time consuming, labor intensive, and difficult to validate and transfer. Here, we describe the characterization of a HSV-neutralization assay based on the expression of a reporter gene, β-galactosidase (β-Gal). Using previously constructed HSV-β-Gal recombinant viruses, HSV-2/Gal and HSV-1/tk12, we developed a colorimetric β-Gal-based neutralization assay that is sensitive and highly reproducible, and performed in less than 48h...
July 19, 2016: Vaccine
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