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https://www.readbyqxmd.com/read/28343933/testing-the-immunocompetence-handicap-hypothesis-testosterone-manipulation-does-not-affect-wound-healing-in-male-salamanders
#1
Jessica R Thomas, Sarah K Woodley
In vertebrates, a bidirectional relationship exists between the immune system and the hypothalamic-pituitary-gonadal axis. In addition, sexual dimorphism in immunity has been documented in many vertebrates as well as some invertebrates, and males are generally less immunocompetent than their female counterparts. A possible explanation for this is described by the immunocompetence handicap hypothesis (ICHH), which proposes that elevated testosterone (T) levels direct resources towards the promotion of secondary sexual characteristics at a cost to immune function...
March 23, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28338786/recombination-mediated-host-adaptation-by-avian-staphylococcus-aureus
#2
Susan Murray, Ben Pascoe, Guillaume Méric, Leonardos Mageiros, Koji Yahara, Matthew D Hitchings, Yasmin Friedmann, Thomas S Wilkinson, Fraser J Gormley, Dietrich Mack, James E Bray, Sarah Lamble, Rory Bowden, Keith A Jolley, Martin C J Maiden, Sarah Wendlandt, Stefan Schwarz, Jukka Corander, J Ross Fitzgerald, Samuel K Sheppard
Staphylococcus aureus are globally disseminated among farmed chickens causing skeletal muscle infections, dermatitis and septicaemia. The emergence of poultry-associated lineages has involved zoonotic transmission from humans to chickens but questions remain about the specific adaptations that promote proliferation of chicken pathogens. We characterised genetic variation in a population of genome-sequenced S. aureus isolates of poultry and human origin. Genealogical analysis identified a dominant poultry-associated sequence cluster within the CC5 clonal complex...
February 28, 2017: Genome Biology and Evolution
https://www.readbyqxmd.com/read/28338446/the-use-of-hippocampal-volumetric-measurements-to-improve-diagnostic-accuracy-in-pediatric-patients-with-mesial-temporal-sclerosis
#3
Gloria J Guzmán Pérez-Carrillo, Christopher Owen, Katherine E Schwetye, Spencer McFarlane, Ananth K Vellimana, Soe Mar, Michelle M Miller-Thomas, Joshua S Shimony, Matthew D Smyth, Tammie L S Benzinger
OBJECTIVE Many patients with medically intractable epilepsy have mesial temporal sclerosis (MTS), which significantly affects their quality of life. The surgical excision of MTS lesions can result in marked improvement or even complete resolution of the epileptic episodes. Reliable radiological diagnosis of MTS is a clinical challenge. The purpose of this study was to evaluate the utility of volumetric mapping of the hippocampi for the identification of MTS in a case-controlled series of pediatric patients who underwent resection for medically refractory epilepsy, using pathology as a gold standard...
March 24, 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/28333538/health-care-contact-and-suicide-risk-documentation-prior-to-suicide-death-results-from-the-army-study-to-assess-risk-and-resilience-in-servicemembers-army-starrs
#4
Jessica D Ribeiro, Peter M Gutierrez, Thomas E Joiner, Ronald C Kessler, Maria V Petukhova, Nancy A Sampson, Murray B Stein, Robert J Ursano, Matthew K Nock
OBJECTIVE: Prior research has shown that a substantial portion of suicide decedents access health care in the weeks and months before their death. We examined whether this is true among soldiers. METHOD: The sample included the 569 Regular Army soldiers in the U.S. Army who died by suicide on active duty between 2004 and 2009 compared to 5,690 matched controls. Analyses examined the prevalence and frequency of health care contacts and documentation of suicide risk (i...
April 2017: Journal of Consulting and Clinical Psychology
https://www.readbyqxmd.com/read/28333488/the-hierarchical-taxonomy-of-psychopathology-hitop-a-dimensional-alternative-to-traditional-nosologies
#5
Roman Kotov, Robert F Krueger, David Watson, Thomas M Achenbach, Robert R Althoff, R Michael Bagby, Timothy A Brown, William T Carpenter, Avshalom Caspi, Lee Anna Clark, Nicholas R Eaton, Miriam K Forbes, Kelsie T Forbush, David Goldberg, Deborah Hasin, Steven E Hyman, Masha Y Ivanova, Donald R Lynam, Kristian Markon, Joshua D Miller, Terrie E Moffitt, Leslie C Morey, Stephanie N Mullins-Sweatt, Johan Ormel, Christopher J Patrick, Darrel A Regier, Leslie Rescorla, Camilo J Ruggero, Douglas B Samuel, Martin Sellbom, Leonard J Simms, Andrew E Skodol, Tim Slade, Susan C South, Jennifer L Tackett, Irwin D Waldman, Monika A Waszczuk, Thomas A Widiger, Aidan G C Wright, Mark Zimmerman
The reliability and validity of traditional taxonomies are limited by arbitrary boundaries between psychopathology and normality, often unclear boundaries between disorders, frequent disorder co-occurrence, heterogeneity within disorders, and diagnostic instability. These taxonomies went beyond evidence available on the structure of psychopathology and were shaped by a variety of other considerations, which may explain the aforementioned shortcomings. The Hierarchical Taxonomy Of Psychopathology (HiTOP) model has emerged as a research effort to address these problems...
March 23, 2017: Journal of Abnormal Psychology
https://www.readbyqxmd.com/read/28330958/intracranial-atherosclerosis-and-dementia-the-atherosclerosis-risk-in-communities-aric-study
#6
Jennifer L Dearborn, Yiyi Zhang, Ye Qiao, Muhammad Fareed K Suri, Li Liu, Rebecca F Gottesman, Andreea M Rawlings, Thomas H Mosley, Alvaro Alonso, David S Knopman, Eliseo Guallar, Bruce A Wasserman
OBJECTIVE: To explore the association of intracranial atherosclerotic disease (ICAD) with mild cognitive impairment (MCI) and dementia. METHODS: From 2011 to 2013, 1,744 participants completed high-resolution vessel wall MRI from the population-based Atherosclerosis Risk in Communities Study by a sampling strategy that allowed weighting back to the cohort. We defined ICAD by plaque features (presence, territory, stenosis, number). Trained clinicians used an algorithm incorporating information from interviews and neuropsychological and neurologic examinations to adjudicate for MCI and dementia...
March 22, 2017: Neurology
https://www.readbyqxmd.com/read/28321589/the-development-of-a-telemedicine-planning-framework-based-on-needs-assessment
#7
Sharifah AlDossary, Melinda G Martin-Khan, Natalie K Bradford, Nigel R Armfield, Anthony C Smith
Providing equitable access to healthcare services in rural and remote communities is an ongoing challenge that faces most governments. By increasing access to specialty expertise, telemedicine may be a potential solution to this problem. Regardless of its potential, many telemedicine initiatives do not progress beyond the research phase, and are not implemented into mainstream practice. One reason may be that some telemedicine services are developed without the appropriate planning to ascertain community needs and clinical requirements...
May 2017: Journal of Medical Systems
https://www.readbyqxmd.com/read/28320072/constitutive-androstane-receptor-regulates-the-intestinal-mucosal-response-to-injury
#8
Grace M Hudson, Kyle L Flannigan, Sarah L Erickson, Fernando A Vicentini, Alexandra Zamponi, Christina L Hirota, Laurie Alston, Christophe Altier, Subrata Ghosh, Kevin P Rioux, Sridhar Mani, Thomas K Chang, Simon A Hirota
BACKGROUND AND PURPOSE: The pathogenesis of the inflammatory bowel diseases(IBD), composed of Crohn's disease(CD) and ulcerative colitis(UC), involves aberrant interactions between a genetically susceptible individual, their microbiota and environmental factors. Alterations in xenobiotic receptor expression and function are associated with increased risk for IBD. In the current study, we assessed the role of the constitutive androstane receptor(CAR), a xenobiotic receptor closely related to the pregnane X receptor, in the regulation of intestinal mucosal homeostasis...
March 20, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28319421/detection-of-subclinical-vitamin-k-deficiency-in-neurosurgery-with-pivka-ii
#9
Sofia Dahlberg, Caroline Ulfsdotter Nilsson, Thomas Kander, Ulf Schött
Vitamin K is known for supporting the carboxylation of hepatic coagulation proteins. Levels of proteins induced by vitamin K absence for factor II (PIVKA-II) reflect hypocarboxylated prothrombin and can be used to detect subclinical vitamin K deficiency. The aim of this study was to determine the prevalence of perioperative subclinical vitamin K deficiency among neurosurgical patients using PIVKA-II and investigate the existence of any correlation to standard coagulation assays. Also, the antitumor effects of vitamin K were reviewed...
March 20, 2017: Scandinavian Journal of Clinical and Laboratory Investigation
https://www.readbyqxmd.com/read/28306666/new-biomarkers-and-imaging-approaches-for-the-diagnosis-of-deep-venous-thrombosis
#10
Jordan K Schaefer, Benjamin Jacobs, Thomas W Wakefield, Suman L Sood
PURPOSE OF REVIEW: Symptoms suggestive of deep vein thrombosis (DVT) are extremely common in clinical practice, but unfortunately nonspecific. In both ambulatory and inpatient settings, clinicians are often tasked with evaluating these concerns. Here, we review the most recent advances in biomarkers and imaging to diagnose lower extremity DVT. RECENT FINDINGS: The modified Wells score remains the most supported clinical decision rule for risk stratifying patients...
March 16, 2017: Current Opinion in Hematology
https://www.readbyqxmd.com/read/28303554/imaging-of-the-oesophagus-beyond-cancer
#11
REVIEW
Thomas Marini, Amit Desai, Katherine Kaproth-Joslin, John Wandtke, Susan K Hobbs
Non-malignant oesophageal diseases are critical to recognize, but can be easily overlooked or misdiagnosed radiologically. In this paper, we cover the salient clinical features and imaging findings of non-malignant pathology of the oesophagus. We organize the many non-malignant diseases of the oesophagus into two major categories: luminal disorders and wall disorders. Luminal disorders include dilatation/narrowing (e.g. achalasia, scleroderma, and stricture) and foreign body impaction. Wall disorders include wall thickening (e...
March 17, 2017: Insights Into Imaging
https://www.readbyqxmd.com/read/28297348/inverse-treatment-planning-for-spinal-robotic-radiosurgery-an-international-multi-institutional-benchmark-trial
#12
Oliver Blanck, Lei Wang, Wolfgang Baus, Jimm Grimm, Thomas Lacornerie, Joakim Nilsson, Sergii Luchkovskyi, Isabel Palazon Cano, Zhenyu Shou, Myriam Ayadi, Harald Treuer, Romain Viard, Frank-Andre Siebert, Mark K H Chan, Guido Hildebrandt, Jürgen Dunst, Detlef Imhoff, Stefan Wurster, Robert Wolff, Pantaleo Romanelli, Eric Lartigau, Robert Semrau, Scott G Soltys, Achim Schweikard
Stereotactic radiosurgery (SRS) is the accurate, conformal delivery of high-dose radiation to well-defined targets while minimizing normal structure doses via steep dose gradients. While inverse treatment planning (ITP) with computerized optimization algorithms are routine, many aspects of the planning process remain user-dependent. We performed an international, multi-institutional benchmark trial to study planning variability and to analyze preferable ITP practice for spinal robotic radiosurgery. 10 SRS treatment plans were generated for a complex-shaped spinal metastasis with 21 Gy in 3 fractions and tight constraints for spinal cord (V14Gy<2 cc, V18Gy<0...
May 2016: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28295932/potential-for-an-arctic-breeding-migratory-bird-to-adjust-spring-migration-phenology-to-arctic-amplification
#13
Thomas K Lameris, Ilse Scholten, Silke Bauer, Marleen M P Cobben, Bruno J Ens, Bart A Nolet
Arctic amplification, the accelerated climate warming in the polar regions, is causing a more rapid advancement of the onset of spring in the Arctic than in temperate regions. Consequently, the arrival of many migratory birds in the Arctic is thought to become increasingly mismatched with the onset of local spring, consequently reducing individual fitness and potentially even population levels. We used a dynamic state variable model to study whether Arctic long-distance migrants can advance their migratory schedules under climate warming scenarios which include Arctic amplification, and whether such an advancement is constrained by fuel accumulation or the ability to anticipate climatic changes...
March 13, 2017: Global Change Biology
https://www.readbyqxmd.com/read/28286413/optimising-terpene-synthesis-with-flow-biocatalysis
#14
Xiaoping Tang, Rudolf K Allemann, Thomas Wirth
Sesquiterpenes are an important family of natural products, many of which exhibit important pharmaceutical and agricultural properties. They are biosynthesised from farnesyl diphosphate in sesquiterpene synthase catalysed reactions. Here, we report the development of a highly efficient segmented flow system for the enzyme-catalysed continuous flow production of sesquiterpenes. Design of experiment (DoE) methods were used to optimise the performance of the flow biocatalysis, and quantitative yields were achieved by using an operationally simple but highly effective segmented flow system...
January 10, 2017: European Journal of Organic Chemistry
https://www.readbyqxmd.com/read/28283652/brca2-hypomorphic-missense-variants-confer-moderate-risks-of-breast-cancer
#15
Hermela Shimelis, Romy L S Mesman, Catharina Von Nicolai, Asa Ehlen, Lucia Guidugli, Charlotte Martin, Fabienne Mgr Calleja, Huong Meeks, Emily Hallberg, Jamie Hinton, Jenna Lilyquist, Chunling Hu, Cora M Aalfs, Kristiina Aittomaki, Irene L Andrulis, Hoda Anton-Culver, Volker Arndt, Matthias W Beckmann, Javier J Benitez, Natalia Bogdanova, Stig E Bojesen, Manjeet K Bolla, Anne-Lise Borresen-Dale, Hiltrud Brauch, Paul Brennan, Hermann Brenner, Annegien Broeks, Barbara Brouwers, Thomas Bruning, Barbara Burwinkel, Jenny Chang-Claude, Georgia Chenevix-Trench, Ching-Yu Cheng, Ji-Yeob Choi, J Margriet Collée, Angela Cox, Simon S Cross, Kamila Czene, Hatef Darabi, Joe Dennis, Thilo Dork, Isabel Dos Santos Silva, Alison M Dunning, Peter A Fasching, Jonine D Figueroa, Henrik Flyger, Montserrat Garcia-Closas, Graham G Giles, Gord Glendon, Pascal Guenel, Christopher A Haiman, Per Hall, Ute Hamann, Mikael Hartman, Frans B L Hogervorst, Antoinette Hollestelle, John L Hopper, Hidemi Ito, Anna Jakubowska, Daehee Kang, Veli-Matti Kosma, Vessela Kristensen, Kah-Nyin Lai, Diether Lambrechts, Loic Le Marchand, Jingmei Li, Annika Lindblom, Artitaya Lophatananon, Jan Lubinski, Eva Machackova, Arto Mannermaa, Sara Margolin, Frederik Marme, Keitaro Matsuo, Hui Miao, Kyriaki Michailidou, Roger L Milne, Kenneth Muir, Susan L Neuhausen, Heli Nevanlinna, Janet E Olson, Curtis Olswold, Jan C Oosterwijk, Ana Osorio, Paolo Peterlongo, Julian Peto, Paul D P Pharoah, Katri Pylkäs, Paolo Radice, Muhammad U Rashid, Valerie Rhenius, Anja Rudolph, Suleeporn Sangrajrang, Elinor J Sawyer, Marjanka K Schmidt, Minouk J Schoemaker, Caroline M Seynaeve, Mitul Shah, Chen-Yang Shen, Martha J Shrubsole, Xiao-Ou Shu, Susan L Slager, Melissa C Southey, Daniel O Stram, Anthony J Swerdlow, Soo Hwang Teo, Ian Tomlinson, Diana Torres, Therese Truong, Christi J van Asperen, Lizet E van der Kolk, Qin Wang, Robert Winqvist, Anna H Wu, Jyh-Cherng Yu, Wei Zheng, Ying Zheng, Jennifer Leary, Logan C Walker, Lenka Foretova, Florentia Fostira, Kathleen Claes, Liliana Varesco, Setareh Moghadasi, Douglas F Easton, Amanda B Spurdle, Peter Devilee, Harry Vrieling, Alvaro N Monteiro, David E Goldgar, Aura Carreira, Maaike P G Vreeswijk, Fergus J Couch
Breast cancer risks conferred by many germline missense variants in the BRCA1 and BRCA2 genes, often referred to as variants of uncertain significance (VUS), have not been established. In this study, associations between 19 BRCA1 and 33 BRCA2 missense substitution variants and breast cancer risk were investigated through a breast cancer case control study using genotyping data from 38 studies of predominantly European ancestry (41,890 cases and 41,607 controls) and nine studies of Asian ancestry (6,269 cases and 6,624 controls)...
March 10, 2017: Cancer Research
https://www.readbyqxmd.com/read/28279998/facilitators-and-barriers-to-chlamydia-testing-in-general-practice-for-young-people-using-a-theoretical-model-com-b-a-systematic-review-protocol
#16
Lorraine K McDonagh, John M Saunders, Jackie Cassell, Hamad Bastaki, Thomas Hartney, Greta Rait
INTRODUCTION: Chlamydia is a key health concern with high economic and social costs. There were over 200 000 chlamydia diagnoses made in England in 2015. The burden of chlamydia is greatest among young people where the highest prevalence rates are found. Annual testing for sexually active young people is recommended; however, many of those at risk do not receive testing. General practice has been identified as an ideal setting for testing, yet efforts to increase testing in this setting have not been effective...
March 9, 2017: BMJ Open
https://www.readbyqxmd.com/read/28278198/blood-pressure-and-expression-of-micrornas-in-whole-blood
#17
Zhou Zhang, Brian Thomas Joyce, Jacob K Kresovich, Yinan Zheng, Jia Zhong, Ruchi Patel, Wei Zhang, Lei Liu, Chang Dou, John P McCracken, Anaité Díaz, Valeria Motta, Marco Sanchez-Guerra, Shurui Bian, Pier Alberto Bertazzi, Joel Schwartz, Andrea A Baccarelli, Sheng Wang, Lifang Hou
BACKGROUND: Blood pressure (BP) is a complex, multifactorial clinical outcome driven by genetic susceptibility, behavioral choices, and environmental factors. Many molecular mechanisms have been proposed for the pathophysiology of high BP even as its prevalence continues to grow worldwide, increasing morbidity and marking it as a major public health concern. To address this, we evaluated miRNA profiling in blood leukocytes as potential biomarkers of BP and BP-related risk factors. METHODS: The Beijing Truck Driver Air Pollution Study included 60 truck drivers and 60 office workers examined in 2008...
2017: PloS One
https://www.readbyqxmd.com/read/28275053/inhibiting-clathrin-mediated-endocytosis-of-the-leucine-rich-g-protein-coupled-receptor-5-diminishes-cell-fitness
#18
Joshua C Snyder, Lauren K Rochelle, Caroline Ray, Thomas F Pack, Cheryl B Bock, Veronica Lubkov, H Kim Lyerly, Alan S Waggoner, Larry S Barak, Marc G Caron
The leucine-rich G protein-coupled receptor-5 (LGR5) is expressed in adult tissue stem cells of many epithelia and its overexpression is negatively correlated with cancer prognosis. LGR5 potentiates WNT/β-catenin signaling through its unique constitutive internalization property that clears negative regulators of the WNT-receptor complex from the membrane. However, both the mechanism and physiological relevance of LGR5 internalization is unclear. Therefore, a natural product library was screened to discover LGR5 internalization inhibitors and gain mechanistic insight into LGR5 internalization...
March 8, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28236574/novel-biomarkers-of-human-gm1-gangliosidosis-reflect-the-clinical-efficacy-of-gene-therapy-in-a-feline-model
#19
Heather L Gray-Edwards, Debra S Regier, Jamie L Shirley, Ashley N Randle, Nouha Salibi, Sarah E Thomas, Yvonne L Latour, Jean Johnston, Gretchen Golas, Annie S Maguire, Amanda R Taylor, Donald C Sorjonen, Victoria J McCurdy, Peter W Christopherson, Allison M Bradbury, Ronald J Beyers, Aime K Johnson, Brandon L Brunson, Nancy R Cox, Henry J Baker, Thomas S Denney, Miguel Sena-Esteves, Cynthia J Tifft, Douglas R Martin
GM1 gangliosidosis is a fatal neurodegenerative disease that affects individuals of all ages. Favorable outcomes using adeno-associated viral (AAV) gene therapy in GM1 mice and cats have prompted consideration of human clinical trials, yet there remains a paucity of objective biomarkers to track disease status. We developed a panel of biomarkers using blood, urine, cerebrospinal fluid (CSF), electrodiagnostics, 7 T MRI, and magnetic resonance spectroscopy in GM1 cats-either untreated or AAV treated for more than 5 years-and compared them to markers in human GM1 patients where possible...
February 21, 2017: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/28229932/csn5-jab1-suppresses-the-wnt-inhibitor-dkk1-in-colorectal-cancer-cells
#20
Sandra Jumpertz, Thomas Hennes, Yaw Asare, Anke K Schütz, Jürgen Bernhagen
The COP9 signalosome (CSN) is a multi-protein complex that is highly conserved in eukaryotes. Due to its regulatory impact on processes such as cell cycle, DNA damage response and apoptosis, the CSN is essential for mammalian cells. One of the best-studied functions of the CSN is the deNEDDylation of cullin-RING ligases (CRLs) via its catalytically active subunit CSN5/JAB1, thereby triggering the degradation of various target proteins. CSN5 was found to be overexpressed in many human cancer entities, including colon adenocarcinoma...
February 14, 2017: Cellular Signalling
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