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https://www.readbyqxmd.com/read/27906228/holographic-imaging-with-a-hard-x-ray-nanoprobe-ptychographic-versus-conventional-phase-retrieval
#1
A-L Robisch, J Wallentin, A Pacureanu, P Cloetens, T Salditt
We have performed near-field x-ray imaging with simultaneous object and probe reconstruction. By an advanced ptychographic algorithm based on longitudinal and lateral translations, full-field images of nanoscale objects are reconstructed with quantitative contrast values, along with the extended wavefronts used to illuminate the objects. The imaging scheme makes idealizing assumptions on the probe obsolete, and efficiently disentangles phase shifts related to the object from the imperfections in the illumination...
December 1, 2016: Optics Letters
https://www.readbyqxmd.com/read/27905959/development-of-a-metric-for-tracking-and-comparing-population-health-based-on-the-minimal-generic-set-of-domains-of-functioning-and-health
#2
Cornelia Oberhauser, Somnath Chatterji, Carla Sabariego, Alarcos Cieza
BACKGROUND: The following minimal set of valid health domains for tracking the health of both clinical and general populations has recently been proposed: 1) energy and drive functions, 2) emotional functions, 3) sensation of pain, 4) carrying out daily routine, 5) walking and moving around, and 6) remunerative employment. This study investigates whether these domains can be integrated into a sound psychometric measure to adequately assess, compare, and monitor the health of populations...
May 12, 2016: Population Health Metrics
https://www.readbyqxmd.com/read/27905255/rumination-and-self-reflection-in-stress-narratives-and-relations-to-psychological-functioning
#3
Kelly A Marin, Elena K Rotondo
The longitudinal study aims to expand what is known about the costs and benefits of narrating stressful experiences by exploring changes in rumination within the narrative process and comparing it to changes in self-reflection. Rumination (e.g., brooding, self-criticism, and negative emotions) and self-reflection were measured in stress narratives of 56 college students. There were several goals: (1) examine changes in narrative rumination and narrative self-reflection over 3 days of writing, (2) examine the relations among the changes in narrative rumination variables and narrative self-reflection and (3) examine how changes in narrative rumination and narrative self-reflection relate to multiple measures of psychological functioning...
January 2017: Memory
https://www.readbyqxmd.com/read/27904749/longitudinal-functional-additive-model-with-continuous-proportional-outcomes-for-physical-activity-data
#4
Haocheng Li, Sarah Kozey-Keadle, Victor Kipnis, Raymond J Carroll
Motivated by physical activity data obtained from the BodyMedia FIT device (www.bodymedia.com), we take a functional data approach for longitudinal studies with continuous proportional outcomes. The functional structure depends on three factors. In our three-factor model, the regression structures are specified as curves measured at various factor-points with random effects that have a correlation structure. The random curve for the continuous factor is summarized using a few important principal components...
2016: Stat: the ISI's Journal for Rapid Dissemination of Statistics Research
https://www.readbyqxmd.com/read/27903333/diffusion-tensor-imaging-predictors-of-episodic-memory-decline-in-healthy-elders-at-genetic-risk-for-alzheimer-s-disease
#5
Melissa A Lancaster, Michael Seidenberg, J Carson Smith, Kristy A Nielson, John L Woodard, Sally Durgerian, Stephen M Rao
OBJECTIVES: White matter (WM) integrity within the mesial temporal lobe (MTL) is important for episodic memory (EM) functioning. The current study investigated the ability of diffusion tensor imaging (DTI) in MTL WM tracts to predict 3-year changes in EM performance in healthy elders at disproportionately higher genetic risk for Alzheimer's disease (AD). METHODS: Fifty-one cognitively intact elders (52% with family history (FH) of dementia and 33% possessing an Apolipoprotein E ε4 allelle) were administered the Rey Auditory Verbal Learning Test (RAVLT) at study entry and at 3-year follow-up...
November 2016: Journal of the International Neuropsychological Society: JINS
https://www.readbyqxmd.com/read/27903328/cognitive-and-behavioral-functioning-in-childhood-acquired-demyelinating-syndromes
#6
Christine Till, Austin Noguera, Leonard H Verhey, Julia O'Mahony, E Ann Yeh, Jean K Mah, Katia J Sinopoli, Brian L Brooks, Berengere Aubert-Broche, D Louis Collins, Sridar Narayanan, Douglas L Arnold, Brenda L Banwell
OBJECTIVES: The aim of this study was to describe cognitive, academic, and psychosocial outcomes after an incident demyelinating event (acquired demyelinating syndromes, ADS) in childhood and to investigate the contribution of brain lesions and confirmed MS diagnosis on outcome. METHODS: Thirty-six patients with ADS (mean age=12.2 years, SD=2.7, range: 7-16 years) underwent brain MRI scans at presentation and at 6-months follow-up. T2-weighted lesions on MRI were assessed using a binary classification...
November 2016: Journal of the International Neuropsychological Society: JINS
https://www.readbyqxmd.com/read/27902936/how-restful-is-it-with-all-that-noise-comparison-of-interleaved-silent-steady-state-isss-and-conventional-imaging-in-resting-state-fmri
#7
J Andoh, M Ferreira, I R Leppert, R Matsushita, B Pike, R J Zatorre
Resting-state fMRI studies have become very important in cognitive neuroscience because they are able to identify BOLD fluctuations in brain circuits involved in motor, cognitive, or perceptual processes without the use of an explicit task. Such approaches have been fruitful when applied to various disordered populations, or to children or the elderly. However, insufficient attention has been paid to the consequences of the loud acoustic scanner noise associated with conventional fMRI acquisition, which could be an important confounding factor affecting auditory and/or cognitive networks in resting-state fMRI...
November 27, 2016: NeuroImage
https://www.readbyqxmd.com/read/27902846/physical-activity-and-other-determinants-of-survival-in-the-oldest-adults
#8
Antonio Muscari, Giampaolo Bianchi, Paola Forti, Marco Giovagnoli, Donatella Magalotti, Paolo Pandolfi, Marco Zoli
OBJECTIVES: To determine the role of physical activity as a possible survival determinant in the oldest adults. DESIGN: Prospective, longitudinal, population-based cohort. SETTING: The Pianoro Study of community-dwelling older adults in three towns in northern Italy. PARTICIPANTS: Noninstitutionalized individuals aged 85 and older (n = 500; mean age 89.6 ± 3.1, 65% female). MEASUREMENTS: Participants provided information on marital status, educational level, previous work activity, cardiovascular risk factors, previous cardiovascular events, self-rated health, joint pain, and functional status...
November 30, 2016: Journal of the American Geriatrics Society
https://www.readbyqxmd.com/read/27902751/exploration-of-a-polygenic-risk-score-for-alcohol-consumption-a-longitudinal-analysis-from-the-alspac-cohort
#9
Michelle Taylor, Andrew J Simpkin, Philip C Haycock, Frank Dudbridge, Luisa Zuccolo
BACKGROUND: Uncertainty remains about the true extent by which alcohol consumption causes a number of health outcomes. Genetic variants, or combinations of variants built into a polygenic risk score (PGRS), can be used in an instrumental variable framework to assess causality between a phenotype and disease outcome of interest, a method known as Mendelian randomisation (MR). We aimed to identify genetic variants involved in the aetiology of alcohol consumption, and develop a PGRS for alcohol...
2016: PloS One
https://www.readbyqxmd.com/read/27900955/serum-levels-of-n-terminal-pro-b-type-natriuretic-peptide-as-a-diagnostic-marker-for-left-ventricular-dysfunction-in-children-with-end-stage-renal-disease-on-hemodialysis
#10
Amr Mohamed Zoair, Maher Ahmed Abdel-Hafez, Wegdan Mawlana, Mohamed Abdel-Rahman Sweylam
The objective of this study was to determine the diagnostic cutoff value of N-terminal-pro B-type natriuretic peptide (NT-pro BNP) as a marker of left ventricular (LV) dysfunction in children with end-stage renal disease (ESRD) on regular hemodialysis (HD). The study was carried out on thirty children with ESRD on regular HD and thirty healthy controls. Echocardiographic studies were done, including a conventional mode for ejection fraction, fractional shortening, tissue Doppler imaging, and longitudinal global strain by speckle tracking...
November 2016: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/27900617/new-and-evolving-concepts-regarding-the-prognosis-and-treatment-of-cardiac-amyloidosis
#11
REVIEW
Stefano Perlini, Roberta Mussinelli, Francesco Salinaro
Systemic amyloidoses are rare and proteiform diseases, caused by extracellular accumulation of insoluble misfolded fibrillar proteins. Prognosis is dictated by cardiac involvement, which is especially frequent in light chain (AL) and in transthyretin variants (ATTR, both mutated, (ATTRm), and wild-type, (ATTRwt)). Recently, ATTRwt has emerged as a potentially relevant cause of a heart failure with preserved ejection fraction (HFpEF). Cardiac amyloidosis is an archetypal example of restrictive cardiomyopathy, with signs and symptoms of global heart failure and diastolic dysfunction...
November 29, 2016: Current Heart Failure Reports
https://www.readbyqxmd.com/read/27900545/functional-and-oncological-outcome-after-surgical-resection-of-the-scapula-and-clavicle-for-primary-chondrosarcoma
#12
S P F T Nota, M J A M Russchen, K A Raskin, H J Mankin, F J Hornicek, J H Schwab
PURPOSE: The scapula is a relatively common site for chondrosarcoma to develop in contrary to the clavicle, which is rarely affected by these tumors. The aim of this study is to determine the functional and oncological outcome for patients treated operatively for scapular or clavicular chondrosarcoma. METHODS: In this single-center retrospective study, we included a sample of 20 patients that received the diagnosis of a primary chondrosarcoma of the scapula or clavicle...
November 29, 2016: Musculoskeletal Surgery
https://www.readbyqxmd.com/read/27900196/muscle-function-is-associated-with-future-patient-reported-outcomes-in-young-adults-with-acl-injury
#13
Vala Flosadottir, Ewa M Roos, Eva Ageberg
BACKGROUND/AIM: Consequences of an anterior cruciate ligament (ACL) injury include worse patient-reported outcomes (PROs) and a decrease in activity level. Muscle function can be improved by targeted exercise. Our aims were to investigate cross-sectional and longitudinal associations among lower extremity muscle function and PROs after ACL injury. METHODS: Fifty-four participants (15 women, mean 30 years) with ACL injury or reconstruction, from the Knee Anterior Cruciate Ligament, Nonsurgical versus Surgical Treatment (KANON) trial (ISRCTN84752559), were assessed with hop performance, muscle power and postural orientation 3 years (SD 0...
2016: BMJ Open Sport & Exercise Medicine
https://www.readbyqxmd.com/read/27899888/neurophysiological-characterization-of-subacute-stroke-patients-a-longitudinal-study
#14
Giuseppe Lamola, Chiara Fanciullacci, Giada Sgherri, Federica Bertolucci, Alessandro Panarese, Silvestro Micera, Bruno Rossi, Carmelo Chisari
Various degrees of neural reorganization may occur in affected and unaffected hemispheres in the early phase after stroke and several months later. Recent literature suggests to apply a stratification based on lesion location and to consider patients with cortico-subcortical and subcortical strokes separately: different lesion location may also influence therapeutic response. In this study we used a longitudinal approach to perform TMS assessment (Motor Evoked Potentials, MEP, and Silent Period, SP) and clinical evaluations (Barthel Index, Fugl-Meyer Assessment for upper limb motor function and Wolf Motor Function Test) in 10 cortical-subcortical and 10 subcortical ischemic stroke patients...
2016: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/27899873/cognition-in-adults-and-older-adults-with-type-1-diabetes-chicken-or-egg
#15
Naomi S Chaytor
IN BRIEF Cognitive impairment and cognitive decline are common in adults with type 1 diabetes. Although several diabetes-related variables have been associated with cognitive functioning in both cross-sectional and longitudinal studies, inconsistencies remain. This is particularly true in older adults. Cognitive impairment appears to be both a consequence of and a risk factor for poor diabetes self-management and associated glycemic outcomes. Interventions such as cognitive compensatory strategies, assistive technology, and simplified treatment regimens may limit the impact of cognitive impairment on self-management in adults and older adults with type 1 diabetes...
November 2016: Diabetes Spectrum: a Publication of the American Diabetes Association
https://www.readbyqxmd.com/read/27899767/immune-function-parameters-as-markers-of-biological-age-and-predictors-of-longevity
#16
Irene Martínez de Toda, Ianire Maté, Carmen Vida, Julia Cruces, Mónica De la Fuente
Chronological age is not a good indicator of how each individual ages and thus how to maintain good health. Due to the long lifespan in humans and the consequent difficulty of carrying out longitudinal studies, finding valid biomarkers of the biological age has been a challenge both for research and clinical studies. The aim was to identify and validate several immune cell function parameters as markers of biological age. Adult, mature, elderly and long-lived human volunteers were used. The chemotaxis, phagocytosis, natural killer activity and lymphoproliferation in neutrophils and lymphocytes of peripheral blood were analyzed...
November 28, 2016: Aging
https://www.readbyqxmd.com/read/27899079/vasopressin-related-copeptin-is-a-novel-predictor-of-early-endothelial-dysfunction-in-patients-with-adult-polycystic-kidney-disease
#17
Ismail Kocyigit, Mahmut Ilker Yilmaz, Ozkan Gungor, Eray Eroglu, Aydin Unal, Ozcan Orscelik, Bulent Tokgoz, Murat Sipahioglu, Ahmet Sen, Juan Jesús Carrero, Oktay Oymak, Jonas Axelsson
BACKGROUND: In this study, we examined the relative usefulness of serum copeptin levels as a surrogate marker of vasopressin (AVP) in adult polycystic kidney disease (ADPKD) by correlating it with baseline and longitudinal changes in markers of both renal function and common CVD manifestations (hypertensive vascular disease, atherosclerosis and endothelial dysfunction) that accompany the progression of this disease. METHODS: We studied a cohort of young and otherwise healthy ADPKD patients (n = 235) and measured cardiovascular function using flow-mediation dilatation (FMD), carotid intima media thickness (cIMT) and pulse wave velocity (PWV), as well as serum copeptin (commercial ELISA, a stable marker of AVP activity)...
November 30, 2016: BMC Nephrology
https://www.readbyqxmd.com/read/27898696/regulation-of-gonad-morphogenesis-in-drosophila-melanogaster-by-btb-family-transcription-factors
#18
Diane Silva, Kenneth W Olsen, Magdalena N Bednarz, Andrew Droste, Christopher P Lenkeit, Edwin Chaharbakhshi, Emily R Temple-Wood, Jennifer C Jemc
During embryogenesis, primordial germ cells (PGCs) and somatic gonadal precursor cells (SGPs) migrate and coalesce to form the early gonad. A failure of the PGCs and SGPs to form a gonad with the proper architecture not only affects germ cell development, but can also lead to infertility. Therefore, it is critical to identify the molecular mechanisms that function within both the PGCs and SGPs to promote gonad morphogenesis. We have characterized the phenotypes of two genes, longitudinals lacking (lola) and ribbon (rib), that are required for the coalescence and compaction of the embryonic gonad in Drosophila melanogaster...
2016: PloS One
https://www.readbyqxmd.com/read/27898496/distinctive-trajectories-of-opioid-use-over-an-extended-follow-up-of-patients-in-a-multisite-trial-on-buprenorphine%C3%A2-%C3%A2-naloxone-and-methadone
#19
Yih-Ing Hser, David Huang, Andrew J Saxon, George Woody, Andrew L Moskowitz, Abigail G Matthews, Walter Ling
OBJECTIVES: Uncovering heterogeneities in longitudinal patterns (trajectories) of opioid use among individuals with opioid use disorder can increase our understanding of disease progression and treatment responses to improve care. The present study aims to identify distinctive opioid use trajectories and factors associated with these patterns among participants randomized to treatment with methadone (MET) or buprenorphine + naloxone (BUP). METHODS: Growth mixture modeling was applied to identify distinctive opioid use trajectories among 795 opioid users after their enrollment in a multisite trial during 2006 to 2009, with follow-up interviews conducted during 2011 to 2014...
November 24, 2016: Journal of Addiction Medicine
https://www.readbyqxmd.com/read/27898206/doomed-for-disorder-high-incidence-of-mood-and-anxiety-disorders-in-offspring-of-depressed-and-anxious-patients-a-prospective-cohort-study
#20
Petra J Havinga, Lynn Boschloo, Annelene J P Bloemen, Maaike H Nauta, Sybolt O de Vries, Brenda W J H Penninx, Robert A Schoevers, Catharina A Hartman
OBJECTIVE: Early recognition of individuals at risk for depressive and anxiety disorders is key in influencing onset and course of these disorders. Parental history is a potent risk factor for the development of these disorders in offspring. However, knowledge about the magnitude of this risk is limited as large-scale longitudinal studies with a follow-up into adulthood are scarce. Those offspring at highest risk may possibly be identified by easy-to-determine parental psychiatric characteristics, family context, and offspring characteristics...
November 22, 2016: Journal of Clinical Psychiatry
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