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https://www.readbyqxmd.com/read/27926985/tropical-rainforests-that-persisted-inferences-from-the-quaternary-demographic-history-of-eight-tree-species-in-the-guiana-shield
#1
Stéphanie Barthe, Giorgio Binelli, Bruno Hérault, Caroline Scotti-Saintagne, Daniel Sabatier, Ivan Scotti
How Quaternary climatic and geological disturbances influenced the composition of Neotropical forests is hotly debated. Rain fall and temperature changes during and/or immediately after the Last Glacial Maximum (LGM) are thought to have strongly affected the geographical distribution and local abundance of tree species. The paucity of the fossil records in Neotropical forests prevents a direct reconstruction of such processes. To describe community-level historical trends in forest composition, we turned therefore to inferential methods based on the reconstruction of past demographic changes...
December 7, 2016: Molecular Ecology
https://www.readbyqxmd.com/read/27926952/growth-hormone-treatment-increases-plasma-irisin-concentration-in-patients-with-turner-syndrome
#2
B Wikiera, K Zawadzka, Ł Łaczmański, N Słoka, M Bolanowski, A Basiak, A Noczyńska, J Daroszewski
Irisin (Ir) deficiency may be a contributing factor in metabolic disease. This study aimed to investigate the effect of supraphysiological doses of recombinant human growth hormone (rhGH) on Ir plasma concentration in relation to metabolic disorders, including obesity and other components of metabolic syndrome. We studied 36 girls with Turner syndrome (mean age 8.2 years) treated with rhGH (0.05 mg/kg/day). Anthropometric data and fasting blood levels [e. g., Ir, insulin, glucose, glycated hemoglobin (HbA1c), IGF-1, IGFBP-3, cholesterol, insulin resistance (HOMA-IR), and β-cell function (HOMA-β)] were analyzed prior to and following rhGH therapy [mean (SD) follow-up of 1...
December 7, 2016: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/27926950/c6-and-c7-substituted-3-4-dihydro-2-1h-quinolinones-as-inhibitors-of-monoamine-oxidase
#3
L Meiring, J Petzer, A Petzer
Purpose Monoamine oxidase (MAO) inhibitors are considered to be useful therapeutic agents and isoform specific inhibitors are employed for the treatment of depression and Parkinson's disease. MAO inhibitors are also under investigation for the treatment of disorders ranging from Alzheimer's disease, prostate cancer and certain cardiomyopathies. While a number of irreversible MAO inhibitors are available in the clinic, reversible inhibitors, particularly of the MAO-B isoform are still being developed. Based on our interest in discovering reversible inhibitors with specificity for MAO-B, we have recently reported that, among a series of 10 3,4-dihydro-2(1H)-quinolinone derivatives, are high potency MAO-B inhibitors, with a number of homologues displaying good selectivities for MAO-B over the MAO-A isoform...
December 7, 2016: Drug Research
https://www.readbyqxmd.com/read/27926946/a-multi-verse-optimizer-with-levy-flights-for-numerical-optimization-and-its-application-in-test-scheduling-for-network-on-chip
#4
Cong Hu, Zhi Li, Tian Zhou, Aijun Zhu, Chuanpei Xu
We propose a new meta-heuristic algorithm named Levy flights multi-verse optimizer (LFMVO), which incorporates Levy flights into multi-verse optimizer (MVO) algorithm to solve numerical and engineering optimization problems. The Original MVO easily falls into stagnation when wormholes stochastically re-span a number of universes (solutions) around the best universe achieved over the course of iterations. Since Levy flights are superior in exploring unknown, large-scale search space, they are integrated into the previous best universe to force MVO out of stagnation...
2016: PloS One
https://www.readbyqxmd.com/read/27926892/do-mobile-phone-applications-improve-glycemic-control-hba1c-in-the-self-management-of-diabetes-a-systematic-review-meta-analysis-and-grade-of-14-randomized-trials
#5
REVIEW
Can Hou, Ben Carter, Jonathan Hewitt, Trevor Francisa, Sharon Mayor
OBJECTIVE: To investigate the effect of mobile phone applications (apps) on glycemic control (HbA1c) in the self-management of diabetes. RESEARCH DESIGN AND METHODS: Relevant studies that were published between 1 January 1996 and 1 June 2015 were searched from five databases: Medline, CINAHL, Cochrane Library, Web of Science, and Embase. Randomized controlled trials that evaluated diabetes apps were included. We conducted a systematic review with meta-analysis and GRADE (Grading of Recommendations Assessment, Development and Evaluation) of the evidence...
November 2016: Diabetes Care
https://www.readbyqxmd.com/read/27926887/the-application-of-genomics-in-diabetes-barriers-to-discovery-and-implementation
#6
James S Floyd, Bruce M Psaty
The emerging availability of genomic and electronic health data in large populations is a powerful tool for research that has drawn interest in bringing precision medicine to diabetes. In this article, we discuss the potential application of genomics to the prediction, prevention, and treatment of diabetes, and we use examples from other areas of medicine to illustrate some of the challenges involved in conducting genomics research in human populations and implementing findings in practice. At this time, a major barrier to the application of genomics in diabetes care is the lack of actionable genomic findings...
November 2016: Diabetes Care
https://www.readbyqxmd.com/read/27926828/harnessing-cancer-cell-metabolism-for-theranostic-applications-using-metabolic-glycoengineering-of-sialic-acid-in-breast-cancer-as-a-pioneering-example
#7
REVIEW
Haitham A Badr, Dina M M AlSadek, Motawa E El-Houseini, Christopher T Saeui, Mohit P Mathew, Kevin J Yarema, Hafiz Ahmed
Abnormal cell surface display of sialic acids - a family of unusual 9-carbon sugars - is widely recognized as distinguishing feature of many types of cancer. Sialoglycans, however, typically cannot be identified with sufficiently high reproducibility and sensitivity to serve as clinically accepted biomarkers and similarly, almost all efforts to exploit cancer-specific differences in sialylation signatures for therapy remain in early stage development. In this report we provide an overview of important facets of glycosylation that contribute to cancer in general with a focus on breast cancer as an example of malignant disease characterized by aberrant sialylation...
November 25, 2016: Biomaterials
https://www.readbyqxmd.com/read/27926807/evaluation-of-a-national-e-mentoring-program-for-ethnically-diverse-student-nurse-midwives-and-student-midwives
#8
Maria Valentin-Welch
INTRODUCTION: The US racial profile is changing rapidly, yet the nursing and midwifery professions are not evolving accordingly. The lack of racial and ethnic diversity within these health professions negatively affects efforts to eliminate persistent health disparities. To address this issue, the Midwives of Color Committee (MOCC) of the American College of Nurse-Midwives (ACNM) created a national online mentoring program in 2011 to support midwifery students of color. An evaluation of the program is reported here...
November 2016: Journal of Midwifery & Women's Health
https://www.readbyqxmd.com/read/27926766/teledermatology-for-the-diagnosis-and-management-of-skin-cancer-a-systematic-review
#9
Anna Finnane, Kathy Dallest, Monika Janda, H Peter Soyer
Importance: As technology becomes more commonplace in dermatological practice, it is essential to continuously review the accuracy of teledermatology devices and services compared with in-person care. The last systematic review was conducted over 5 years ago. Objective: To synthesize and assess the quality of the evidence to address 3 research questions: (1) How accurate is teledermatology for skin cancer diagnosis compared with usual care (face-to-face [FTF] diagnosis)? (2) Does teledermatology save clinician and/or patient time, compared with usual care? (3) What are the enablers and barriers to adoption of teledermatology in clinical practice for the diagnosis of skin cancer? Evidence Review: The review protocol was registered in the PROSPERO database...
December 7, 2016: JAMA Dermatology
https://www.readbyqxmd.com/read/27926732/electric-field-stimulated-protein-mechanics
#10
Doeke R Hekstra, K Ian White, Michael A Socolich, Robert W Henning, Vukica Šrajer, Rama Ranganathan
The internal mechanics of proteins-the coordinated motions of amino acids and the pattern of forces constraining these motions-connects protein structure to function. Here we describe a new method combining the application of strong electric field pulses to protein crystals with time-resolved X-ray crystallography to observe conformational changes in spatial and temporal detail. Using a human PDZ domain (LNX2(PDZ2)) as a model system, we show that protein crystals tolerate electric field pulses strong enough to drive concerted motions on the sub-microsecond timescale...
December 7, 2016: Nature
https://www.readbyqxmd.com/read/27926672/mechanisms-predisposing-factors-and-prognosis-of-intra-operative-vertebral-subluxation-during-pedicle-subtraction-osteotomy-in-surgical-correction-of-thoracolumbar-kyphosis-secondary-to-ankylosing-spondylitis
#11
Bang-Ping Qian, Sai-Hu Mao, Jun Jiang, Bin Wang, Yong Qiu
STUDY DESIGN: A retrospective study. OBJECTIVE: To analyze the mechanisms, predisposing factors and prognosis of the intraoperative vertebral subluxation (VS) during pedicle subtraction osteotomy (PSO) for thoracolumbar kyphosis secondary to ankylosing spondylitis (AS). SUMMARY OF BACKGROUND DATA: VS is one of the most daunting challenges that surgeons encounter during PSO closure, especially in AS patients with ankylosed and mostly osteoporotic spine...
December 6, 2016: Spine
https://www.readbyqxmd.com/read/27926586/hypercapnic-conditions-after-experimental-blunt-chest-trauma-increase-efferocytosis-of-alveolar-macrophages-and-reduce-local-inflammation
#12
Annette Palmer, Michael S J Eichner, Anne Rittlinger, Daniel H Seitz, Florian Gebhard, Markus S Huber-Lang, Ulrike Niesler
Blunt chest trauma induces severe local and systemic inflammatory alterations and an accumulation of apoptotic polymorphonuclear granulocytes (aPMN) in the lungs, frequently followed by bacterial infection. Alveolar macrophages (AM) represent one of the main actors for their clearance. However, little is known regarding regulatory and influencing factors of AM efferocytic and phagocytic activities. In this context, we investigated the influence of impaired gas exchange on AM activity.Male rats underwent blunt chest trauma or sham procedure and aPMN or E...
December 6, 2016: Shock
https://www.readbyqxmd.com/read/27926561/percutaneous-posterior-tibial-nerve-stimulation-vs-perianal-application-of-glyceryl-trinitrate-ointment-in-the-treatment-of-chronic-anal-fissure-a-randomized-clinical-trial
#13
Jaime Ruiz-Tovar, Carolina Llavero
BACKGROUND: Current therapeutic guidelines for the treatment of chronic anal fissure establish a medical approach as the first step. Glyceryl trinitrate ointment is the most popular of the available topical treatments in Spain but it is associated with the appearance of headache. OBJECTIVE: The purpose of this study was to compare the compliance rate among patients receiving glyceryl trinitrate treatment for chronic anal fissure with that among patients receiving percutaneous posterior tibial nerve stimulation...
January 2017: Diseases of the Colon and Rectum
https://www.readbyqxmd.com/read/27926542/measuring-quality-of-life-in-advanced-heart-failure
#14
Jane MacIver, Kirsten Wentlandt, Heather J Ross
PURPOSE OF REVIEW: Patients with Stage D heart failure can benefit from palliative care consultation to help them manage unpleasant symptoms and improve quality of life. Although guidelines describe how to manage symptoms, very little direction is provided on how to evaluate the effectiveness of those interventions. RECENT FINDINGS: Numerous studies have used the measurement of symptoms, emotional distress, functional capacity and quality of life to evaluate the effectiveness of interventions in heart failure...
December 6, 2016: Current Opinion in Supportive and Palliative Care
https://www.readbyqxmd.com/read/27926447/motivation-and-attention-following-hemispheric-stroke
#15
E Olgiati, C Russell, D Soto, P Malhotra
Spatial neglect (SN) is an extremely common disorder of attention; it is most frequently a consequence of stroke, especially to the right cerebral hemisphere. The current view of SN is that it is not a unitary deficit but a multicomponent syndrome. Crucially, it has been repeatedly shown that it has a considerable negative impact on rehabilitation outcome. Although a number of behavioral and pharmacological therapies have been developed, none of these appears to be applicable to all patients with SN or has proved unequivocally successful in clinical trials...
2016: Progress in Brain Research
https://www.readbyqxmd.com/read/27926442/intrinsic-motivation-curiosity-and-learning-theory-and-applications-in-educational-technologies
#16
P-Y Oudeyer, J Gottlieb, M Lopes
This chapter studies the bidirectional causal interactions between curiosity and learning and discusses how understanding these interactions can be leveraged in educational technology applications. First, we review recent results showing how state curiosity, and more generally the experience of novelty and surprise, can enhance learning and memory retention. Then, we discuss how psychology and neuroscience have conceptualized curiosity and intrinsic motivation, studying how the brain can be intrinsically rewarded by novelty, complexity, or other measures of information...
2016: Progress in Brain Research
https://www.readbyqxmd.com/read/27926441/a-benefit-cost-framework-of-motivation-for-a-specific-activity
#17
B Studer, S Knecht
How can an individual be motivated to perform a target exercise or activity? This question arises in training, therapeutic, and education settings alike, yet despite-or even because of-the large range of extant motivation theories, finding a clear answer to this question can be challenging. Here we propose an application-friendly framework of motivation for a specific activity or exercise that incorporates core concepts from several well-regarded psychological and economic theories of motivation. The key assumption of this framework is that motivation for performing a given activity is determined by the expected benefits and the expected costs of (performance of) the activity...
2016: Progress in Brain Research
https://www.readbyqxmd.com/read/27926378/automated-segmentation-of-white-matter-fiber-bundles-using-diffusion-tensor-imaging-data-and-a-new-density-based-clustering-algorithm
#18
Tahereh Kamali, Daniel Stashuk
OBJECTIVE: Robust and accurate segmentation of brain white matter (WM) fiber bundles assists in diagnosing and assessing progression or remission of neuropsychiatric diseases such as schizophrenia, autism and depression. Supervised segmentation methods are infeasible in most applications since generating gold standards is too costly. Hence, there is a growing interest in designing unsupervised methods. However, most conventional unsupervised methods require the number of clusters be known in advance which is not possible in most applications...
October 2016: Artificial Intelligence in Medicine
https://www.readbyqxmd.com/read/27926352/3d-laparoscopy-in-neonates-and-infants
#19
Yury Kozlov, Konstantin Kovalkov, Vladimir Nowogilov
BACKGROUND: This study focuses on the successful application of three-dimensional (3D) laparoscopic surgeries in the treatment of congenital anomalies and acquired diseases in the young pediatric population. The purpose of this scientific work consists in highlighting the spectrum, indications, applicability, and effectiveness of 3D endosurgery in children. METHODS: Our experience is based on 110 endosurgical procedures performed in neonates and infants in the 3D format between January 2014 and May 2015...
December 2016: Journal of Laparoendoscopic & Advanced Surgical Techniques. Part A
https://www.readbyqxmd.com/read/27925870/hydrogen-sulfide-enhances-pancreatic-%C3%AE-cell-differentiation-from-human-tooth-under-normal-and-glucotoxic-conditions
#20
Ioan Valentin Matei, Hisataka Ii, Ken Yaegaki
AIM: Glucotoxicity obstructs pancreatic differentiation from adult stem cells. The aim was to develop a novel protocol for differentiation of dental pulp stem cells (DPSCs) into pancreatic β cells and determine the effect of H2S on glucotoxicity. MATERIALS & METHODS: DPSCs were differentiated with media containing 5.5 or 25.0 mM glucose, exposed to 1 ng/ml H2S. Glucotoxicity, expression of β-cell markers, INS, PDX1 and GLUT2, and PI3K/AKT pathway were assessed...
December 7, 2016: Regenerative Medicine
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