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https://www.readbyqxmd.com/read/28325259/vitamin-d-analogues-potential-use-in-cancer-treatment
#1
REVIEW
Michael J Duffy, Alyson Murray, Naoise C Synnott, Norma O'Donovan, John Crown
The vitamin D receptor (VDR) is a member of the thyroid-steroid family of nuclear transcription factors. Following binding of the active form of vitamin D, i.e., 1,25(OH)2D3 (also known as calcitriol) and interaction with co-activators and co-repressors, VDR regulates the expression of several different genes. Although relatively little work has been carried out on VDR in human cancers, several epidemiological studies suggest that low circulating levels of vitamin D are associated with both an increased risk of developing specific cancer types and poor outcome in patients with specific diagnosed cancers...
April 2017: Critical Reviews in Oncology/hematology
https://www.readbyqxmd.com/read/28295452/presumed-lupus-erythematosus-cells-identified-in-bronchoalveolar-lavage-fluid-from-a-mexican-hairless-dog
#2
Laura J Black, Ashley C Hechler, Maura E Duffy, Sarah S K Beatty
A neutered male Mexican Hairless dog was presented for generalized weight loss and weakness. Initial laboratory testing and diagnostic imaging revealed thrombocytopenia and an interstitial to miliary lung pattern affecting all lung fields. Mild joint effusion was found on physical examination affecting the stifle, tarsal, carpal, and elbow joints. Examination of synovial fluid demonstrated an inflammatory polyarthropathy in 3 joints. Cytocentrifuged and direct preparations of the bronchoalveolar lavage (BAL) fluid sample were made and cells consistent with lupus erythematosus (LE) cells and ragocytes were found...
March 13, 2017: Veterinary Clinical Pathology
https://www.readbyqxmd.com/read/28263462/omics-for-understanding-the-gut-liver-microbiome-axis-and-precision-medicine
#3
Jag Khalsa, Linda C Duffy, Gabriela Riscuta, Pamela Starke-Reed, Van S Hubbard
Human metabolic disease opens a new view to understanding the contribution of the intestinal microbiome to drug metabolism and drug-induced toxicity in gut-liver function. The gut microbiome, a key determinant of intestinal inflammation, also plays a direct role in chronic inflammation and liver disease. Gut bacterial communities directly metabolize certain drugs, reducing their bioavailability and influencing individual variation in drug response. In addition, some microbiome-produced compounds may affect drug pharmacokinetics and pharmacodynamics via altered expression of metabolizing enzymes and drug transporters or genes coding for drug target proteins, drug response phenotypes, and disease states...
March 2017: Clinical Pharmacology in Drug Development
https://www.readbyqxmd.com/read/28260944/a-famciclovir-celecoxib-combination-treatment-is-safe-and-efficacious-in-the-treatment-of-fibromyalgia
#4
William L Pridgen, Carol Duffy, Judy F Gendreau, R Michael Gendreau
OBJECTIVE: Infections and other stressors have been implicated in the development of fibromyalgia. We hypothesized that these stressors could result in recurrent reactivations of latent herpes virus infections, which could lead to the development of fibromyalgia. This study evaluated a famciclovir + celecoxib drug combination (IMC-1), active against suspected herpes virus reactivation and infection, for the treatment of fibromyalgia. METHODS: A total of 143 fibromyalgia patients were enrolled at 12 sites in a 16-week, double-blinded, placebo-controlled proof-of-concept trial...
2017: Journal of Pain Research
https://www.readbyqxmd.com/read/28254464/adra2b-deletion-variant-influences-time-dependent-effects-of-pre-learning-stress-on-long-term-memory
#5
Phillip R Zoladz, Alison M Dailey, Hannah E Nagle, Miranda K Fiely, Brianne E Mosley, Callie M Brown, Tessa J Duffy, Amanda R Scharf, McKenna B Earley, Boyd R Rorabaugh
Extensive work over the past few decades has shown that certain genetic variations interact with life events to confer increased susceptibility for the development of psychological disorders. The deletion variant of the ADRA2B gene, which has been associated with enhanced emotional memory and heightened amygdala responses to emotional stimuli, might confer increased susceptibility for the development of post-traumatic stress disorder (PTSD) or related phenotypes by increasing the likelihood of traumatic memory formation...
February 22, 2017: Neurobiology of Learning and Memory
https://www.readbyqxmd.com/read/28250051/systemic-autoimmunity-induced-by-the-tlr7-8-agonist-resiquimod-causes-myocarditis-and-dilated-cardiomyopathy-in-a-new-mouse-model-of-autoimmune-heart-disease
#6
Muneer G Hasham, Nicoleta Baxan, Daniel J Stuckey, Jane Branca, Bryant Perkins, Oliver Dent, Ted Duffy, Tolani S Hameed, Sarah E Stella, Mohammed Bellahcene, Michael D Schneider, Sian E Harding, Nadia Rosenthal, Susanne Sattler
Systemic autoimmune diseases such as systemic lupus erythematosus (SLE) and rheumatoid arthritis (RA) show significant heart involvement and cardiovascular morbidity, which can be due to systemically increased levels of inflammation or direct autoreactivity targeting cardiac tissue. Despite high clinical relevance, cardiac damage secondary to systemic autoimmunity lacks inducible rodent models. Here, we characterise immune-mediated cardiac tissue damage in a new model of SLE induced by topical application of the Toll-like receptor 7/8 (TLR7/8) agonist Resiquimod...
March 1, 2017: Disease Models & Mechanisms
https://www.readbyqxmd.com/read/28244914/investigation-of-taper-failure-in-a-contemporary-metal-on-metal-hip-arthroplasty-system-through-examination-of-unused-and-explanted-prostheses
#7
David Langton, Imran Ahmed, Peter Avery, Martin Bone, Nicholas Cooke, David Deehan, Patrick Duffy, Pedro Foguet, Stephen Green, James Holland, Anwar Jafri, Lee Longstaff, James Lord, Jonathan Loughead, R M Dominic Meek, Helen Murray, Ananda Nanu, A V F Nargol, Susan Claire Scholes, Raghavendra Prasad Sidaginamale, Susan Waller, Thomas Joyce
BACKGROUND: Large-diameter (≥36-mm) metal-on-metal (MoM) total hip replacements have been shown to fail at an unacceptably high rate. Globally, the DePuy Pinnacle prosthesis was the most widely used device of this type. There is evidence to suggest that one of the main reasons for the poor clinical performance of large-diameter MoM prostheses is the metal debris released from the head-stem taper junction-i.e., taper junction failure. The aim of this study was to investigate variation in the as-manufactured finish of the female taper surface and to determine its influence on material loss...
March 1, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28221921/national-survey-of-shiga-toxin-producing-escherichia-coli-serotypes-o26-o45-o103-o111-o121-o145-and-o157-in-australian-beef-cattle-feces
#8
Glen E Mellor, Narelle Fegan, Lesley L Duffy, Kate E McMILLAN, David Jordan, Robert S Barlow
Escherichia coli O157 and six non-O157 Shiga toxin-producing E. coli (STEC) serotypes (O26, O45, O103, O111, O121, and O145, colloquially referred to as the "big 6") have been classified as adulterants of raw nonintact beef products in the United States. While beef cattle are a known reservoir for the prototype STEC serotype, E. coli O157, less is known about the dissemination of non-O157 STEC serotypes in Australian cattle. In the present study, 1,500 fecal samples were collected at slaughter from adult (n =628) and young (n =286) beef cattle, adult (n =128) and young (n =143) dairy cattle, and veal calves (n = 315) across 31 Australian export-registered processing establishments...
November 2016: Journal of Food Protection
https://www.readbyqxmd.com/read/28217131/incomplete-infection-of-secondarily-infected-potato-plants-an-environment-dependent-underestimated-mechanism-in-plant-virology
#9
Lukas Bertschinger, Lukas Bühler, Brice Dupuis, Brion Duffy, Cesare Gessler, Gregory A Forbes, Ernst R Keller, Urs C Scheidegger, Paul C Struik
The common assumption in potato virus epidemiology is that all daughter tubers produced by plants coming from infected mother tubers (secondary infection) will become infected via systemic translocation of the virus during growth. We hypothesize that depending on the prevalent environmental conditions, only a portion of the daughter tubers of a plant that is secondarily infected by viruses may become infected. To test this hypothesis experimental data from standardized field experiments were produced in three contrasting environments at 112, 3280, and 4000 m a...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28216244/safety-and-efficacy-of-pfspz-vaccine-against-plasmodium-falciparum-via-direct-venous-inoculation-in-healthy-malaria-exposed-adults-in-mali-a-randomised-double-blind-phase-1-trial
#10
Mahamadou S Sissoko, Sara A Healy, Abdoulaye Katile, Freda Omaswa, Irfan Zaidi, Erin E Gabriel, Bourama Kamate, Yacouba Samake, Merepen A Guindo, Amagana Dolo, Amadou Niangaly, Karamoko Niaré, Amatigue Zeguime, Kourane Sissoko, Hama Diallo, Ismaila Thera, Kelly Ding, Michael P Fay, Elise M O'Connell, Thomas B Nutman, Sharon Wong-Madden, Tooba Murshedkar, Adam J Ruben, Minglin Li, Yonas Abebe, Anita Manoj, Anusha Gunasekera, Sumana Chakravarty, B Kim Lee Sim, Peter F Billingsley, Eric R James, Michael Walther, Thomas L Richie, Stephen L Hoffman, Ogobara Doumbo, Patrick E Duffy
BACKGROUND: Plasmodium falciparum sporozite (PfSPZ) Vaccine is a metabolically active, non-replicating, whole malaria sporozoite vaccine that has been reported to be safe and protective against P falciparum controlled human malaria infection in malaria-naive individuals. We aimed to assess the safety and protective efficacy of PfSPZ Vaccine against naturally acquired P falciparum in malaria-experienced adults in Mali. METHODS: After an open-label dose-escalation study in a pilot safety cohort, we did a double-blind, randomised, placebo-controlled trial based in Donéguébougou and surrounding villages in Mali...
February 16, 2017: Lancet Infectious Diseases
https://www.readbyqxmd.com/read/28187790/retinoic-acid-and-tgf-%C3%AE-signalling-cooperate-to-overcome-mycn-induced-retinoid-resistance
#11
David J Duffy, Aleksandar Krstic, Melinda Halasz, Thomas Schwarzl, Anja Konietzny, Kristiina Iljin, Desmond G Higgins, Walter Kolch
BACKGROUND: Retinoid therapy is widely employed in clinical oncology to differentiate malignant cells into their more benign counterparts. However, certain high-risk cohorts, such as patients with MYCN-amplified neuroblastoma, are innately resistant to retinoid therapy. Therefore, we employed a precision medicine approach to globally profile the retinoid signalling response and to determine how an excess of cellular MYCN antagonises these signalling events to prevent differentiation and confer resistance...
February 10, 2017: Genome Medicine
https://www.readbyqxmd.com/read/28151395/molecular-basis-of-the-duffy-blood-group-system
#12
REVIEW
Gabriela Höher, Marilu Fiegenbaum, Silvana Almeida
ACKR1, located on chromosome 1q23.2, is the gene that encodes a glycoprotein expressing the Duffy blood group antigens. This gene is transcribed in two mRNA variants yielding two isoforms, encoding proteins with 338 and 336 amino acids. This review provides a general overview of the Duffy blood group to characterise and elucidate the genetic basis of this system. The Fy(a) and Fy(b) antigens are encoded by co-dominant FY*A (FY*01) and FY*B (FY*02) alleles, which differ by c.125G>A (rs12075), defining the Fy(a+b-), Fy(a-b+) and Fy(a+b+) phenotypes...
January 30, 2017: Blood Transfusion, Trasfusione del Sangue
https://www.readbyqxmd.com/read/28146332/effects-of-distance-from-models-on-the-fitness-of-floral-mimics
#13
K J Duffy, S D Johnson
Rewardless plants can attract pollinators by mimicking floral traits of rewarding heterospecific plants. This should result in the pollination success of floral mimics being dependent on the relative abundance of their models, as pollinator abundance and conditioning on model signals should be higher in the vicinity of the models. However, the attraction of pollinators to signals of the models may be partially innate, such that spatial isolation of mimics from model species may not strongly affect pollination success of mimics...
February 1, 2017: Plant Biology
https://www.readbyqxmd.com/read/28132681/human-mesenchymal-stem-cells-genetically-engineered-to-overexpress-brain-derived-neurotrophic-factor-improve-outcomes-in-huntington-s-disease-mouse-models
#14
Kari Pollock, Heather Dahlenburg, Haley Nelson, Kyle D Fink, Whitney Cary, Kyle Hendrix, Geralyn Annett, Audrey Torrest, Peter Deng, Joshua Gutierrez, Catherine Nacey, Karen Pepper, Stefanos Kalomoiris, Johnathon D Anderson, Jeannine McGee, William Gruenloh, Brian Fury, Gerhard Bauer, Alexandria Duffy, Theresa Tempkin, Vicki Wheelock, Jan A Nolta
Huntington's disease (HD) is a fatal degenerative autosomal dominant neuropsychiatric disease that causes neuronal death and is characterized by progressive striatal and then widespread brain atrophy. Brain-derived neurotrophic factor (BDNF) is a lead candidate for the treatment of HD, as it has been shown to prevent cell death and to stimulate the growth and migration of new neurons in the brain in transgenic mouse models. BDNF levels are reduced in HD postmortem human brain. Previous studies have shown efficacy of mesenchymal stem/stromal cells (MSC)/BDNF using murine MSCs, and the present study used human MSCs to advance the therapeutic potential of the MSC/BDNF platform for clinical application...
May 2016: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/28125674/characterisation-of-immune-and-neuroinflammatory-changes-associated-with-chemotherapy-induced-peripheral-neuropathy
#15
Preet G S Makker, Samuel S Duffy, Justin G Lees, Chamini J Perera, Ryan S Tonkin, Oleg Butovsky, Susanna B Park, David Goldstein, Gila Moalem-Taylor
Chemotherapy-induced peripheral neuropathy (CIPN) and associated neuropathic pain is a debilitating adverse effect of cancer treatment. Current understanding of the mechanisms underpinning CIPN is limited and there are no effective treatment strategies. In this study, we treated male C57BL/6J mice with 4 cycles of either Paclitaxel (PTX) or Oxaliplatin (OXA) over a week and tested pain hypersensitivity and changes in peripheral immune responses and neuroinflammation on days 7 and 13 post 1st injection. We found that both PTX and OXA caused significant mechanical allodynia...
2017: PloS One
https://www.readbyqxmd.com/read/28116578/innate-immunity-in-systemic-sclerosis
#16
REVIEW
Christopher Dowson, Nathan Simpson, Laura Duffy, Steven O'Reilly
PURPOSE OF REVIEW: Systemic sclerosis (SSc) is a heterogeneous autoimmune disease which has defined three hallmarks: Small vessel vasculopathy, production of autoantibodies and fibroblast dysfunction. The exact aetiology of the disease remains unknown, due to the complex nature of the cellular signalling pathways involved. However, there is strong and consistent evidence that the innate system, in particular toll-like receptor signalling, is contributing to the progression and perhaps onset of systemic sclerosis...
January 2017: Current Rheumatology Reports
https://www.readbyqxmd.com/read/28113254/non-contact-pressure-based-sleep-wake-discrimination
#17
Lorcan Walsh, Sean McLoone, Joesph Ronda, Jeanne F Duffy, Charles A Czeisler
Poor sleep is increasingly being recognised as an important prognostic parameter of health. For those with suspected sleep disorders, patients are referred to sleep clinics which guide treatment. However, sleep clinics are not always a viable option due to their high cost, a lack of experienced practitioners, lengthy waiting lists and an unrepresentative sleeping environment. A home-based non-contact sleep/wake monitoring system may be used as a guide for treatment potentially stratifying patients by clinical need or highlighting longitudinal changes in sleep and nocturnal patterns...
October 25, 2016: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28102467/mypod-an-emr-based-tool-that-facilitates-quality-improvement-and-maintenance-of-certification
#18
Loren Berman, Brian Duffy, B Randall Brenn, Charles Vinocur
Maintenance of Certification (MOC) was designed to assess physician competencies including operative case volume and outcomes. This information, if collected consistently and systematically, can be used to facilitate quality improvement. Information automatically extracted from the electronic medical record (EMR) can be used as a prompt to compile these data. We developed an EMR-based program called MyPOD (My Personal Outcomes Data) to track surgical outcomes at our institution. We compared occurrences reported in the first 18 months to those captured in the American College of Surgeons National Surgical Quality Improvement Program-Pediatric (ACS NSQIP-P) over the same time period...
March 2017: Journal of Medical Systems
https://www.readbyqxmd.com/read/28073449/harmful-algal-bloom-forecast-system-for-sw-ireland-part-ii-are-operational-oceanographic-models-useful-in-a-hab-warning-system
#19
Caroline Cusack, Tomasz Dabrowski, Kieran Lyons, Alan Berry, Guy Westbrook, Rafael Salas, Conor Duffy, Glenn Nolan, Joe Silke
This study investigated the application of a three-dimensional physical hydrodynamic model in a harmful algal bloom forecast system for Bantry Bay, southwest Ireland. Modelled oceanographic conditions were studied and used to help understand observed changes in the chemical and biological patterns from the national biotoxins and phytoplankton monitoring program. The study focused on two toxic events in 2013. An upwelling event was predicted by the model prior to the appearance and population increase of potentially toxic diatoms, Pseudo-nitzschia, and associated domoic acid in shellfish...
March 2016: Harmful Algae
https://www.readbyqxmd.com/read/28063739/development-of-left-atrial-thrombus-after-coadministration-of-dabigatran-etexilate-and-phenytoin
#20
Nicole Hager, Jennifer Bolt, Lori Albers, Wladyslaw Wojcik, Patrick Duffy, William Semchuk
Dabigatran etexilate is a substrate of the P-glycoprotein (adenosine triphosphate-binding cassette subfamily B member 1) transport system and is subject to interactions with medications that induce or inhibit this system. The clinical relevance of the interaction between dabigatran and phenytoin has not been well described. We report a case of left atrial thrombus in a patient receiving concomitant dabigatran etexilate and phenytoin, which is a P-glycoprotein inducer. This case illustrates the potential clinical significance of the interactions of medications that affect P-glycoprotein and dabigatran...
October 28, 2016: Canadian Journal of Cardiology
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