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Longitudinal function

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https://www.readbyqxmd.com/read/29156090/a-case-control-study-the-association-of-serum-paraoxonase-1-activity-and-concentration-with-the-development-of-type-2-diabetes-mellitus
#1
J Allen Crow, Edward C Meek, Robert W Wills, Janice E Chambers
BACKGROUND: A longitudinal study assessed serum paraoxonase 1 (PON1) activity and concentration as affected by age and as associated with the development of type 2 diabetes (T2D). PON1's recently established physiological function is the hydrolysis of lipolactones in oxidized LDL particles. METHODS: Serum samples and clinical data collected and stored at different time points over a 20 year interval in the Air Force Health Study were analyzed. PON1 activity and concentration and C-reactive protein (CRP) concentration in samples from the same individuals 20 years apart were compared using a paired t test (n=159)...
November 20, 2017: Diabetes/metabolism Research and Reviews
https://www.readbyqxmd.com/read/29155813/post-guidance-signaling-by-extracellular-matrix-associated-slit-slit-n-maintains-fasciculation-and-position-of-axon-tracts-in-the-nerve-cord
#2
Krishna Moorthi Bhat
Axon-guidance by Slit-Roundabout (Robo) signaling at the midline initially guides growth cones to synaptic targets and positions longitudinal axon tracts in discrete bundles on either side of the midline. Following the formation of commissural tracts, Slit is found also in tracts of the commissures and longitudinal connectives, the purpose of which is not clear. The Slit protein is processed into a larger N-terminal peptide and a smaller C-terminal peptide. Here, I show that Slit and Slit-N in tracts interact with Robo to maintain the fasciculation, the inter-tract spacing between tracts and their position relative to the midline...
November 20, 2017: PLoS Genetics
https://www.readbyqxmd.com/read/29155290/factors-associated-with-attrition-in-a-multicenter-longitudinal-observational-study-of-patients-with-advanced-cancer
#3
Pedro E Perez-Cruz, Omar Shamieh, Carlos Eduardo Paiva, Jung Hye Kwon, Mary Ann Muckaden, Eduardo Bruera, David Hui
CONTEXT: Attrition is common in longitudinal observational studies in palliative care. Few studies have examined predictors of attrition. OBJECTIVES: To identify patient characteristics at enrollment associated with attrition in palliative oncology outpatient setting. METHODS: In this longitudinal observational study, advanced cancer patients [ACP] enrolled in an outpatient multicenter study were assessed at baseline and 2-5 weeks later. We compared baseline characteristics between patients who returned for follow-up and those who dropped out...
November 15, 2017: Journal of Pain and Symptom Management
https://www.readbyqxmd.com/read/29155276/cortical-plasticity-as-a-basis-of-phantom-limb-pain-fact-or-fiction
#4
J Andoh, C Milde, J W Tsao, H Flor
Cortical reorganization has been proposed as a major factor involved in phantom pain with prior nociceptive input to the deafferented region and input from the non-deafferented cortex creating neuronal activity that is perceived as phantom pain. There is substantial evidence that these processes play a role in neuropathic pain, although causal evidence is lacking. Recently it has been suggested that a maintenance of the cortical representation of the former hand area is related to phantom pain. Although interesting, evidence for this process is so far scarce...
November 16, 2017: Neuroscience
https://www.readbyqxmd.com/read/29154959/early-life-innate-immune-signatures-of-persistent-food-allergy
#5
Melanie R Neeland, Jennifer J Koplin, Thanh D Dang, Shyamali C Dharmage, Mimi L Tang, Susan L Prescott, Richard Saffery, David J Martino, Katrina J Allen
BACKGROUND: Food allergy naturally resolves in a proportion of food allergic children without intervention, however the underlying mechanisms governing the persistence or resolution of food allergy in childhood are not understood. OBJECTIVES: This study aimed to define the innate immune profiles associated with egg allergy at one year of age, determine the phenotypic changes that occur with the development of natural tolerance in childhood and explore the relationship between early life innate immune function and serum vitamin D...
November 14, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29154430/lower-than-expected-burden-of-premature-ventricular-contractions-impairs-myocardial-function
#6
Øyvind H Lie, Jørg Saberniak, Lars A Dejgaard, Mathis K Stokke, Finn Hegbom, Ole-Gunnar Anfinsen, Thor Edvardsen, Kristina H Haugaa
AIMS: We aimed to explore the burden of frequent premature ventricular contractions (PVCs) associated with myocardial dysfunction in patients with outflow tract arrhythmia (OTA). We hypothesized that this threshold is lower than the previously suggested threshold of 24 000 PVCs/24 h (24%PVC) when systolic function is assessed by strain echocardiography. Furthermore, we aimed to characterize OTA patients with malignant arrhythmic events. METHODS AND RESULTS: We included 52 patients referred for OTA ablation (46 ± 12 years, 58% female)...
November 2017: ESC Heart Failure
https://www.readbyqxmd.com/read/29154283/longitudinal-neuroimaging-analysis-in%C3%A2-mild-moderate-alzheimer-s-disease-patients-treated-with-plasma-exchange-with%C3%A2-5-human-albumin
#7
Gemma Cuberas-Borrós, Isabel Roca, Mercè Boada, Lluís Tárraga, Isabel Hernández, Mar Buendia, Lourdes Rubio, Gustavo Torres, Ángel Bittini, Juan A Guzmán-de-Villoria, Francesc Pujadas, Mireia Torres, Laura Núñez, Joan Castell, Antonio Páez
BACKGROUND: Recently, modifications of Aβ1-42 levels in CSF and plasma associated with improvement in memory and language functions have been observed in patients with mild-moderate Alzheimer's disease (AD) treated with plasma exchange (PE) with albumin replacement. OBJECTIVE: To detect structural and functional brain changes in PE-treated AD patients as part of a Phase II clinical trial. METHODS: Patients received between 3 and 18 PE with albumin (Albutein® 5%, Grifols) or sham-PE (controls) for 21 weeks (divided in one intensive and two maintenance periods) followed by 6-month follow-up...
November 17, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/29154276/sparcl1-accelerates-symptom-onset-in-alzheimer-s-disease-and-influences-brain-structure-and-function-during-aging
#8
Sahba Seddighi, Vijay R Varma, Yang An, Sudhir Varma, Lori L Beason-Held, Toshiko Tanaka, Melissa H Kitner-Triolo, Michael A Kraut, Christos Davatzikos, Madhav Thambisetty
We recently reported that alpha-2 macroglobulin (A2M) is a biomarker of neuronal injury in Alzheimer's disease (AD) and identified a network of nine genes co-expressed with A2M in the brain. This network includes the gene encoding SPARCL1, a protein implicated in synaptic maintenance. Here, we examine whether SPARCL1 is associated with longitudinal changes in brain structure and function in older individuals at risk for AD in the Baltimore Longitudinal Study of Aging. Using data from the Gene-Tissue Expression Project, we first identified two single nucleotide polymorphisms (SNPs), rs9998212 and rs7695558, associated with lower brain SPARCL1 gene expression...
November 16, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/29154088/a-hill-type-muscle-model-expansion-accounting-for-effects-of-varying-transverse-muscle-load
#9
Tobias Siebert, Norman Stutzig, Christian Rode
Recent studies demonstrated that uniaxial transverse loading (FG) of a rat gastrocnemius medialis muscle resulted in a considerable reduction of maximum isometric muscle force (ΔFim). A hill-type muscle model assuming an identical gearing G between both ΔFim and FG as well as lifting height of the load (Δh) and longitudinal muscle shortening (ΔlCC) reproduced experimental data for a single load. Here we tested if this model is able to reproduce experimental changes in ΔFim and Δh for increasing transverse loads (0...
November 8, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29153995/longitudinal-estimated-gfr-trajectories-in-patients-with-and-without-type-2-diabetes-and-nephropathy
#10
Misghina Weldegiorgis, Dick de Zeeuw, Liang Li, Hans-Henrik Parving, Fan Fan Hou, Giuseppe Remuzzi, Tom Greene, Hiddo J L Heerspink
BACKGROUND: In clinical practice and clinical trials, changes in serum creatinine concentrations are used to evaluate changes in kidney function. It has been assumed that these changes follow a linear pattern when serum creatinine concentration is converted to estimated glomerular filtration rate (eGFR). However, the paradigm that kidney function declines linearly over time has been questioned by studies showing either linear or nonlinear patterns. To verify how this impacts on kidney end points in intervention trials, we analyzed eGFR trajectories in multiple clinical trials of patients with and without diabetes...
November 16, 2017: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
https://www.readbyqxmd.com/read/29153782/outcomes-of-cervical-laminoplasty-population-level-analysis-of-a-national-longitudinal-database
#11
Anand Veeravagu, Tej D Azad, Michael Zhang, Amy Li, Arjun V Pendharkar, John K Ratliff, Lawrence M Shuer
OBJECTIVE: Cervical laminoplasty is an important alternative to laminectomy in decompressing of the cervical spine. Further evidence to assess the utility of laminoplasty is required. We examine outcomes of cervical laminoplasty via a population level analysis in the United States. METHODS: We performed a population-level analysis using the national MarketScan longitudinal database to analyze outcomes and costs of cervical laminoplasty between 2007 and 2014. Outcomes included postoperative complications, revision rates, and functional outcomes...
November 15, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/29153741/left-atrial-function-in-patients-with-light-chain-amyloidosis-a-transthoracic-3d-speckle-tracking-imaging-study
#12
Dania Mohty, Vincent Petitalot, Julien Magne, Bahaa M Fadel, Cyrille Boulogne, Dounia Rouabhia, Chahrazed ElHamel, David Lavergne, Thibaud Damy, Victor Aboyans, Arnaud Jaccard
BACKGROUND: Systemic light chain amyloidosis (AL) is characterized by the extracellular deposition of amyloid fibrils. Transthoracic echocardiography is the modality of choice to assess cardiac function in patients with AL. Whereas left ventricular (LV) function has been well studied in this patient population, data regarding the value of left atrial (LA) function in AL patients are lacking. In this study, we aim to examine the impact of LA volumes and function on survival in AL patients as assessed by real-time 3D echocardiography...
November 16, 2017: Journal of Cardiology
https://www.readbyqxmd.com/read/29153687/influence-of-non-dipping-pattern-of-blood-pressure-in-gestational-hypertension-on-maternal-cardiac-function-hemodynamics-and-intrauterine-growth-restriction
#13
A Ilic, D J Ilic, S Tadic, M Stefanovic, A Stojsic-Milosavljevic, K Pavlovic, A Redzek, L Velicki
BACKGROUND: An association between gestational hypertension (GH) and changes of maternal cardiac function was previously reported. AIM: The study assessed the effect of non-dipping pattern of blood pressure (BP) in GH on haemodynamic function and intrauterine growth restriction (IUGR). METHODS: This study included 126 women (91 with GH and 35 normotensive controls). Based on the BP values measured by ambulatory blood pressure monitoring (ABPM), all hypertensive women were classified in dipper (46 women) or in non-dipper group (45 women)...
October 2017: Pregnancy Hypertension
https://www.readbyqxmd.com/read/29153671/longitudinal-evaluation-of-uterine-perfusion-endothelial-function-and-central-blood-flow-in-early-onset-pre-eclampsia
#14
Ludmila Barcelos Porto, Augusto Henriques Fulgêncio Brandão, Henrique Vítor Leite, Antônio Carlos Vieira Cabral
OBJECTIVES: Physiopathological mechanisms that trigger clinical manifestations in pre-eclampsia (PE) remain unclear, and management is still a challenge. The identification of tools to predict the onset of the disease and prevent its complications is of great interest in medical practice. The present study aims to evaluate uterine perfusion, endothelial function and central nervous system blood flow in pregnant women with high-risk factors for PE, for comparison of the results between the group of patients who developed early onset PE and those who remained normotensive throughout pregnancy...
October 2017: Pregnancy Hypertension
https://www.readbyqxmd.com/read/29153660/fetal-size-and-growth-velocity-in-chronic-hypertension
#15
T Frusca, S Parolini, A Dall'Asta, W A Hassan, A Vitulo, A Gillett, D Pasupathy, C C Lees
OBJECTIVE: To investigate longitudinal fetal growth and growth velocity for commonly measured biometric parameters in women with chronic hypertension. METHODS: Two centre retrospective European study of women with chronic hypertension ascertained at pregnancy booking. Ultrasound measurements of head circumference (HC), abdominal circumference (AC) and femur length (FL) were used to derive longitudinal fetal growth charts derived using functional linear discriminant analysis (FLDA)...
October 2017: Pregnancy Hypertension
https://www.readbyqxmd.com/read/29153577/2d-and-3d-echocardiography-derived-indices-of-left-ventricular-function-and%C3%A2-shape-relationship-with-mortality
#16
Diego Medvedofsky, Francesco Maffessanti, Lynn Weinert, David M Tehrani, Akhil Narang, Karima Addetia, Anuj Mediratta, Stephanie A Besser, Elad Maor, Amit R Patel, Kirk T Spencer, Victor Mor-Avi, Roberto M Lang
OBJECTIVES: This study hypothesized that left ventricular (LV) ejection fraction (EF) and global longitudinal strain (GLS) derived from 3-dimensional echocardiographic (3DE) images would better predict mortality than those obtained by 2-dimensional echocardiographic (2DE) measurements, and that 3DE-based LV shape analysis may have added prognostic value. BACKGROUND: Previous studies have shown that both LVEF and GLS derived from 2DE images predict mortality. Recently, 3DE measurements of these parameters were found to be more accurate and reproducible because of independence of imaging plane and geometric assumptions...
November 10, 2017: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/29153571/association-of-abnormal-left-ventricular-functional-reserve-with-outcome-in-heart-failure-with-preserved-ejection-fraction
#17
Wojciech Kosmala, Monika Przewlocka-Kosmala, Aleksandra Rojek, Andrzej Mysiak, Andrzej Dabrowski, Thomas H Marwick
OBJECTIVES: This study sought to determine the prognostic value of abnormal diastolic and systolic responses to exercise (on the basis of exertional E/e' and global longitudinal strain rate [GSR]) in a well-characterized population of patients with heart failure with preserved ejection fraction (HFpEF). BACKGROUND: Impaired cardiovascular functional reserve is believed to contribute to adverse outcomes in HFpEF. However, the exact characteristics of pathophysiological profiles associated with increased clinical risk are still poorly defined...
November 10, 2017: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/29153044/the-modular-socket-system-in-a-rural-setting-in-indonesia
#18
Bob Giesberts, Liezel Ennion, Olle Hjelmstrom, Agusni Karma, Knut Lechler, Edsko Hekman, Arjen Bergsma
BACKGROUND: Prosthetic services are inaccessible to people living in rural areas. Systems like the modular socket system have the potential to be fabricated outside of the prosthetic workshop. OBJECTIVES: This study aimed to evaluate the patient's performance and satisfaction with the use of the modular socket system, and the technical feasibility of its implementation in a rural setting. STUDY DESIGN: A quantitative longitudinal descriptive study design was followed...
November 1, 2017: Prosthetics and Orthotics International
https://www.readbyqxmd.com/read/29152121/longitudinal-evaluation-of-myocardial-glucose-metabolism-and-contractile-function-in-obese-type-2-diabetic-db-db-mice-using-small-animal-dynamic-18-f-fdg-pet-and-echocardiography
#19
Kuan-Yin Ko, Yen-Wen Wu, Cheng-Wei Liu, Mei-Fang Cheng, Ruoh-Fang Yen, Wei-Shiung Yang
The aim was to evaluate sequential changes of myocardial glucose utilization and LV systolic function in db/db mice. Eight db/db and eight wild-type mice underwent plasma substrate analysis and dynamic (18)F-FDG PET at week 8 (W8), W10, W12, W14, and W16. (18)F-FDG uptake constant Ki and the rate of myocardial glucose uptake (MRGlu) were derived via Patlak graphic analysis. Another 8 db/db and 8 wild-type mice received echocardiography at W8, W12, and W16 and LV structure and function were measured. The db/db mice showed increased weights and glucose levels as they aged...
October 20, 2017: Oncotarget
https://www.readbyqxmd.com/read/29151492/determinants-of-the-change-in-arterial-stiffness-in-peritoneal-dialysis-patients
#20
Mitsutaka Nakahigashi, Hiroyasu Tsukaguchi, Satoshi Morimoto, Chikara Nakano, Hiroko Ueda, Kazunori Someya, Makiko Kusabe, Sanae Kikuchi, Takanobu Imada, Ichiro Shiojima
Arterial stiffness is an important risk factor for cardiovascular disease (CVD) in patients with end-stage renal failure. However, little is known about the factors that contribute to arterial rigidity in peritoneal dialysis (PD) patients. The aim of this study was to define the pattern and determinants of the longitudinal change in arterial stiffness after PD initiation.Arterial stiffening was estimated for 46 PD patients by using brachial-ankle pulse wave velocity (baPWV) and carotid intima-media thickness (cIMT)...
November 17, 2017: International Heart Journal
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