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https://www.readbyqxmd.com/read/28535494/overdiagnosis-in-breast-cancer-screening-the-impact-of-study-design-and-calculations
#1
Elsebeth Lynge, Anna-Belle Beau, Peer Christiansen, My von Euler-Chelpin, Niels Kroman, Sisse Njor, Ilse Vejborg
Overdiagnosis in breast cancer screening is an important issue. A recent study from Denmark concluded that one in three breast cancers diagnosed in screening areas in women aged 50-69 years were overdiagnosed. The purpose of this short communication was to disentangle the study's methodology in order to evaluate the soundness of this conclusion. We found that both the use of absolute differences as opposed to ratios; the sole focus on non-advanced tumours and the crude allocation of tumours and person-years by screening history for women aged 70-84 years, all contributed to the very high estimate of overdiagnosis...
May 20, 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/28535416/the-role-of-timing-in-the-treatment-of-spinal-cord-injury
#2
REVIEW
Amene Saghazadeh, Nima Rezaei
Regeneration failure after primary spinal cord injury (SCI) leads to diverse clinical complications in a severity- and level of SCI-dependent manner. The cost of treating both of them (initial regeneration failure and following complications) would be prohibitive, particularly in less developed nations. The well-recognized circumstances arose from primary SCI include excitotoxicity and inflammation. SCI increases concentrations of extracellular amino acids (EAAs) in the severity-dependent manner and the maximum level of EAAs at the injury site will be reduced by distance from the injury site...
May 20, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28535374/discovery-of-stromal-regulatory-networks-that-suppress-ras-sensitized-epithelial-cell-proliferation
#3
Huayang Liu, James A Dowdle, Safiya Khurshid, Nicholas J Sullivan, Nicholas Bertos, Komal Rambani, Markus Mair, Piotr Daniel, Esther Wheeler, Xing Tang, Kyle Toth, Michael Lause, Markus E Harrigan, Karl Eiring, Connor Sullivan, Matthew J Sullivan, Serena W Chang, Siddhant Srivastava, Joseph S Conway, Raleigh Kladney, Joseph McElroy, Sooin Bae, Yuanzhi Lu, Ali Tofigh, Sadiq M I Saleh, Soledad A Fernandez, Jeffrey D Parvin, Vincenzo Coppola, Erin R Macrae, Sarmila Majumder, Charles L Shapiro, Lisa D Yee, Bhuvaneswari Ramaswamy, Michael Hallett, Michael C Ostrowski, Morag Park, Helen M Chamberlin, Gustavo Leone
Mesodermal cells signal to neighboring epithelial cells to modulate their proliferation in both normal and disease states. We adapted a Caenorhabditis elegans organogenesis model to enable a genome-wide mesodermal-specific RNAi screen and discovered 39 factors in mesodermal cells that suppress the proliferation of adjacent Ras pathway-sensitized epithelial cells. These candidates encode components of protein complexes and signaling pathways that converge on the control of chromatin dynamics, cytoplasmic polyadenylation, and translation...
May 22, 2017: Developmental Cell
https://www.readbyqxmd.com/read/28535372/a-brain-region-specific-neural-pathway-regulating-germinal-matrix-angiogenesis
#4
Shang Ma, Devi Santhosh, Peeyush Kumar T, Zhen Huang
Intimate communication between neural and vascular cells is critical for normal brain development and function. Germinal matrix (GM), a key primordium for the brain reward circuitry, is unique among brain regions for its distinct pace of angiogenesis and selective vulnerability to hemorrhage during development. A major neonatal condition, GM hemorrhage can lead to cerebral palsy, hydrocephalus, and mental retardation. Here we identify a brain-region-specific neural progenitor-based signaling pathway dedicated to regulating GM vessel development...
May 22, 2017: Developmental Cell
https://www.readbyqxmd.com/read/28535366/comprehensibility-and-neural-substrate-of-communicative-gestures-in-severe-aphasia
#5
Katharina Hogrefe, Wolfram Ziegler, Nicole Weidinger, Georg Goldenberg
Communicative gestures can compensate incomprehensibility of oral speech in severe aphasia, but the brain damage that causes aphasia may also have an impact on the production of gestures. We compared the comprehensibility of gestural communication of persons with severe aphasia and non-aphasic persons and used voxel based lesion symptom mapping (VLSM) to determine lesion sites that are responsible for poor gestural expression in aphasia. On group level, persons with aphasia conveyed more information via gestures than controls indicating a compensatory use of gestures in persons with severe aphasia...
May 20, 2017: Brain and Language
https://www.readbyqxmd.com/read/28535192/learning-through-chain-event-graphs-the-role-of-maternal-factors-in-childhood-type-i-diabetes
#6
Claire Keeble, Peter Adam Thwaites, Paul David Baxter, Stuart Barber Pgclthe, Roger Charles Parslow, Graham Richard Law
Chain event graphs are a graphical representation of a statistical model derived from event trees, previously applied to cohort studies but not to case-control studies. We apply the chain event graph framework to a Yorkshire case-control study of childhood type I diabetes, to examine four exposure variables associated with the mother, three of which are fully observed (her school-leaving-age, amniocenteses during pregnancy and delivery type) and one with missing values (her rhesus factor), while incorporating previous type I diabetes knowledge...
May 23, 2017: American Journal of Epidemiology
https://www.readbyqxmd.com/read/28535143/intercultural-communication-through-the-eyes-of-patients-experiences-and-preferences
#7
Emma Paternotte, Sandra van Dulmen, Lindsay Bank, Conny Seeleman, Albert Scherpbier, Fedde Scheele
Objectives: To explore patients' preferences and experiences regarding intercultural communication which could influence the development of intercultural patient-centred communication training. Methods: This qualitative study is based on interviews with non-native patients. Thirty non-native patients were interviewed between September and December 2015 about their preferences and experiences regarding communication with a native Dutch doctor. Fourteen interviews were established with an interpreter...
May 16, 2017: International Journal of Medical Education
https://www.readbyqxmd.com/read/28535117/evaluation-of-a-chaplain-residency-program-and-its-partnership-with-an-in-patient-palliative-care-team
#8
Elizabeth Jackson-Jordan, Cynthia Stafford, Sara V Stratton, TeresaMarie T Vilagos, Angela Janssen Keenan, Greg Hathaway
In 2009 a Consensus Conference of experts in the field of spiritual care and palliative care recommended the inclusion of Board-certified professional chaplains with at least 1,600 hours of clinical pastoral education as members of palliative care teams. This study evaluates a clinical pastoral education residency program's effectiveness in preparing persons to provide spiritual care for those with serious illness and in increasing the palliative care team members' understanding of the chaplain as part of the palliative care team...
May 23, 2017: Journal of Health Care Chaplaincy
https://www.readbyqxmd.com/read/28535043/identification-and-quantification-of-acylated-homoserine-lactones-in-shewanella-baltica-the-specific-spoilage-organism-of-pseudosciaena-crocea-by-ultra-high-performance-liquid-chromatography-coupled-to-triple-quadrupole-mass-spectrometry
#9
Yanbo Wang, Xiaoxiao Zhang, Chong Wang, Linglin Fu, Yanyao Yi, Yan Zhang
Bacteria communicate with one another using chemical signal molecules called autoinducers, and the most prevalent autoinducers used by Gram-negative bacteria are N-acylated homoserine lactones (AHLs). However, AHLs are hardly detected in Shewanella baltica, the specific spoilage organism of Pseudosciaena crocea. In this study, we applied ultra-high-performance liquid chromatography coupled to triple quadrupole tandem mass spectrometry (UHPLC-QqQ-MS/MS) to determine AHLs. This method enabled the quantification of up to 11 AHLs within 5...
May 23, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28534847/low-power-multi-hop-networking-analysis-in-intelligent-environments
#10
Josu Etxaniz, Gerardo Aranguren
Intelligent systems are driven by the latest technological advances in many different areas such as sensing, embedded systems, wireless communications or context recognition. This paper focuses on some of those areas. Concretely, the paper deals with wireless communications issues in embedded systems. More precisely, the paper combines the multi-hop networking with Bluetooth technology and a quality of service (QoS) metric, the latency. Bluetooth is a radio license-free worldwide communication standard that makes low power multi-hop wireless networking available...
May 19, 2017: Sensors
https://www.readbyqxmd.com/read/28534803/consensus-tracking-of-heterogeneous-discrete-time-networked-multiagent-systems-based-on-the-networked-predictive-control-scheme
#11
Yuxin Wei, Guo-Ping Liu
This paper studies the problem of consensus tracking for heterogeneous discrete-time networked multiagent systems (NMASs) with network-induced communication delay. By introducing the networked predictive control scheme, novel consensus tracking protocols are designed to ensure that states of the NMASs follow the external reference signal. One of the agents is defined as the leader agent, all the other agents are defined as the followers, and the external reference signal is always known by the leader agent, both cases where the external reference signal is available and unavailable to the follower agents are discussed in this paper...
May 16, 2017: IEEE Transactions on Cybernetics
https://www.readbyqxmd.com/read/28534766/a-new-perspective-to-graphical-characterization-of-multiagent-controllability
#12
Zhijian Ji, Haisheng Yu
Recently, graphical characterization of multiagent controllability has been studied extensively. A major effort in the study is to determine controllability directly from topology structures of communication graphs. In this paper, we proposed the concept of controllability destructive nodes, which indicates that the difficulty in graphical characterization turns out to be the identification of topology structures of controllability destructive nodes. It is shown that each kind of double and triple controllability destructive nodes happens to have a uniform topology structure which can be defined similarly...
June 2017: IEEE Transactions on Cybernetics
https://www.readbyqxmd.com/read/28534735/the-use-of-the-gaps-in-noise-test-as-an-index-of-the-enhanced-left-temporal-cortical-thinning-associated-with-the-transition-between-mild-cognitive-impairment-and-alzheimer-s-disease
#13
Vasiliki Vivian Iliadou, Doris-Eva Bamiou, Christos Sidiras, Nikolaos P Moschopoulos, Magda Tsolaki, Ioannis Nimatoudis, Gail D Chermak
BACKGROUND: The known link between auditory perception and cognition is often overlooked when testing for cognition. PURPOSE: To evaluate auditory perception in a group of older adults diagnosed with mild cognitive impairment (MCI). RESEARCH DESIGN: A cross-sectional study of auditory perception. STUDY SAMPLE: Adults with MCI and adults with no documented cognitive issues and matched hearing sensitivity and age. DATA COLLECTION: Auditory perception was evaluated in both groups, assessing for hearing sensitivity, speech in babble (SinB), and temporal resolution...
May 2017: Journal of the American Academy of Audiology
https://www.readbyqxmd.com/read/28534732/evaluation-of-adaptive-noise-management-technologies-for-school-age-children-with-hearing-loss
#14
Jace Wolfe, Mila Duke, Erin Schafer, Christine Jones, Lori Rakita
BACKGROUND: Children with hearing loss experience significant difficulty understanding speech in noisy and reverberant situations. Adaptive noise management technologies, such as fully adaptive directional microphones and digital noise reduction, have the potential to improve communication in noise for children with hearing aids. However, there are no published studies evaluating the potential benefits children receive from the use of adaptive noise management technologies in simulated real-world environments as well as in daily situations...
May 2017: Journal of the American Academy of Audiology
https://www.readbyqxmd.com/read/28534683/transfer-from-pediatric-to-adult-endocrinology
#15
Marybeth R Jones, Brett W Robbins, Marilyn Augustine, Jackie Doyle, Jean Mack-Fogg, Heather Jones, Patience H White
OBJECTIVE: Adult and pediatric endocrinologists share responsibility for the transition of youth with type 1 diabetes from pediatric to adult healthcare. This study aimed to increase successful transfers to adult care in subspecialty practices by establishing a systematic healthcare transition (HCT) process. METHODS: Providers from the adult and pediatric endocrinology divisions at the University of Rochester Medical Center (URMC) met monthly to customize and integrate the 6 Core Elements (6CEs) of HCT into clinical workflows...
May 23, 2017: Endocrine Practice
https://www.readbyqxmd.com/read/28534656/early-development-in-rett-syndrome-the-benefits-and-difficulties-of-a-birth-cohort-approach
#16
Peter B Marschik, Sanne Lemcke, Christa Einspieler, Dajie Zhang, Sven Bölte, Gillian S Townend, Marlene B Lauritsen
PURPOSES: Typically, early (pre-diagnostic) development in individuals later diagnosed with Rett syndrome (RTT) has been investigated retrospectively using parent reports, medical records and analysis of home videos. In recent years, prospective research designs have been increasingly applied to the investigation of early development in individuals with late phenotypical onset disorders, for example, autism spectrum disorder. METHODS: In this study, data collected by the Danish National Birth Cohort lent itself to prospective exploration of the early development of RTT, in particular early motor-, speech-language, and socio-communicative behaviors, mood, and sleep...
May 23, 2017: Developmental Neurorehabilitation
https://www.readbyqxmd.com/read/28534543/-evolution-of-patient-safety-culture-in-a-medium-stay-hospital-monitoring-indicators
#17
M J Merino-Plaza, F J Carrera-Hueso, M Castillo-Blasco, A Martínez-Asensi, R Martínez-Capella, N Fikri-Benbrahim
BACKGROUND: Patient safety is a challenge for health care. The aim of this study is to identify the dimensions with the greatest impact on patient safety culture of healthcare staff in a medium-stay hospital; to asses its evolution over time and to check the sensitivity of monitoring indicators. METHODS: Two cross-sectional studies (2013 to 2015) were conducted. The safety culture assessment tool used was the Spanish version of the "Hospital Survey on Patient Safety" (AHRQ)...
April 30, 2017: Anales del Sistema Sanitario de Navarra
https://www.readbyqxmd.com/read/28534473/the-cost-of-communication-in-the-brain
#18
Brian A MacVicar, Leigh Wicki-Stordeur, Louis-Philippe Bernier
Imaging ATP in axons reveals that they rely on glucose from the blood and lactate produced by glial cells as sources of energy.
May 22, 2017: ELife
https://www.readbyqxmd.com/read/28534217/autism-spectrum-disorder-associated-genes-and-the-development-of-dentate-granule-cells
#19
REVIEW
Hidenori Ito, Rika Morishita, Koh-Ichi Nagata
Autism spectrum disorder (ASD) is a neurodevelopmental disorder characterized by severe clinical symptoms such as the deficiency of the social communication, repetitive and stereotyped behaviors, and restricted interests. Although complex genetic and environmental factors are thought to contribute to the development of ASD, the precise etiologies are largely unknown. Neuroanatomical observations have been made of developmental abnormalities in different brain regions, including dentate gyrus of hippocampus, which is widely accepted as the center for learning and memory...
May 22, 2017: Medical Molecular Morphology
https://www.readbyqxmd.com/read/28534181/assessing-decision-making-capacity-for-do-not-resuscitate-requests-in-depressed-patients-how-to-apply-the-communication-and-appreciation-criteria
#20
Benjamin D Brody, Ellen C Meltzer, Diana Feldman, Julie B Penzner, Janna S Gordon-Elliot
The Patient Self Determination Act (PSDA) of 1991 brought much needed attention to the importance of advance care planning and surrogate decision-making. The purpose of this law is to ensure that a patient's preferences for medical care are recognized and promoted, even if the patient loses decision-making capacity (DMC). In general, patients are presumed to have DMC. A patient's DMC may come under question when distortions in thinking and understanding due to illness, delirium, depression or other psychiatric symptoms are identified or suspected...
May 22, 2017: HEC Forum: An Interdisciplinary Journal on Hospitals' Ethical and Legal Issues
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