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https://www.readbyqxmd.com/read/29776014/association-of-objectively-measured-physical-activity-with-brain-structure-uk-biobank-study
#1
Mark Hamer, Nikhil Sharma, G David Batty
BACKGROUND: Physical activity may be beneficial for cognition but mechanisms are unclear. We examined the association between objectively assessed physical activity and brain volume, with a focus on the hippocampus region. METHODS: We used data from UK Biobank (n=5,272; aged 55.4±7.5 yrs; 45.6% men) collected through 2013-2016. Participants wore the Axivity AX3 wrist-worn triaxial accelerometer for seven days to assess habitual physical activity. Structural magnetic resonance imaging was performed using a standard Siemens Skyra 3T running VD13A SP4 to obtain images of the brain...
May 18, 2018: Journal of Internal Medicine
https://www.readbyqxmd.com/read/29776007/development-and-psychometric-evaluation-of-the-swedish-propensity-to-achieve-healthy-lifestyle-scale-in-patients-with-hypertension
#2
Anders Broström, A H Pakpour, Martin Ulander, Per Nilsen
PURPOSE: To develop and validate a Swedish questionnaire to measure propensity for behaviour change regarding food habits, physical activity and weight reduction in patients with hypertension. DESIGN: Cross-sectional design. METHODS: A total of 270 consecutive patients with hypertension diagnosed at 4 primary care centres in Sweden were included. The 6-item Swedish version of the Propensity to Achieve Healthy Lifestyle Scale (PAHLS) was developed to measure propensity for behaviour change regarding food habits, physical activity and weight reduction...
May 18, 2018: Journal of Clinical Nursing
https://www.readbyqxmd.com/read/29775962/preterm-birth-and-oxidative-stress-effects-of-acute-physical-exercise-and-hypoxia-physiological-responses
#3
Agnès Martin, Camille Faes, Tadej Debevec, Chantal Rytz, Grégoire Millet, Vincent Pialoux
Preterm birth is a global health issue that can induce lifelong medical sequela. Presently, at least one in ten newborns are born prematurely. At birth, preterm newborns exhibit higher levels of oxidative stress (OS) due to the inability to face the oxygen rich environment in which they are born into. Moreover, their immature respiratory, digestive, immune and antioxidant defense systems, as well as the potential numerous medical interventions following a preterm birth, such as oxygen resuscitation, nutrition, phototherapy and blood transfusion further contribute to high levels of OS...
May 1, 2018: Redox Biology
https://www.readbyqxmd.com/read/29775954/a-new-methodology-based-on-functional-principal-component-analysis-to-study-postural-stability-post-stroke
#4
M Luz Sánchez-Sánchez, Juan-Manuel Belda-Lois, Silvia Mena-Del Horno, Enrique Viosca-Herrero, Celedonia Igual-Camacho, Beatriz Gisbert-Morant
BACKGROUND: A major goal in stroke rehabilitation is the establishment of more effective physical therapy techniques to recover postural stability. Functional Principal Component Analysis provides greater insight into recovery trends. However, when missing values exist, obtaining functional data presents some difficulties. The purpose of this study was to reveal an alternative technique for obtaining the Functional Principal Components without requiring the conversion to functional data beforehand and to investigate this methodology to determine the effect of specific physical therapy techniques in balance recovery trends in elderly subjects with hemiplegia post-stroke...
May 5, 2018: Clinical Biomechanics
https://www.readbyqxmd.com/read/29775886/sprint-interval-training-sit-substantially-reduces-depressive-symptoms-in-major-depressive-disorder-mdd-a-randomized-controlled-trial
#5
Alice Minghetti, Oliver Faude, Henner Hanssen, Lukas Zahner, Markus Gerber, Lars Donath
Continuous aerobic exercise training (CAT) is considered a complementary treatment option in patients with major depressive disorder (MDD). Intermittent exercise training protocols, such as sprint interval training (SIT) have gained increasing popularity, but no studies on depressive symptoms following SIT in patients with MDD are available. Fifty-nine in-patients with MDD were randomly assigned to a SIT or CAT group. Medication was counterbalanced in both intervention arms. Both intervention groups received 3 weekly training sessions for 4-weeks (12 sessions in total)...
May 8, 2018: Psychiatry Research
https://www.readbyqxmd.com/read/29775876/childhood-abuse-and-depression-in-adulthood-the-mediating-role-of-allostatic-load
#6
Sandra Scheuer, Nicole Wiggert, Tanja Maria Brückl, Yvonne Awaloff, Manfred Uhr, Susanne Lucae, Stefan Kloiber, Florian Holsboer, Marcus Ising, Frank H Wilhelm
BACKGROUND: Traumatic experiences during childhood are considered a major risk factor for depression in adulthood. Childhood trauma may induce physiological dysregulation with long-term effects of increased allostatic load until adulthood, which may lead to depression. Thus, our aim was to investigate whether allostatic load - which represents a multi-system measure of physiological dysregulation - mediates the association between childhood trauma and adult depression. METHODS: The study sample consisted of 324 depressed inpatients participating in the Munich Antidepressant Response Signature (MARS) project and 261 mentally healthy control participants...
April 22, 2018: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/29775870/adverse-and-adaptive-childhood-experiences-are-associated-with-parental-reflective-functioning-in-mothers-with-substance-use-disorder
#7
Ulrika Håkansson, Reidulf Watten, Kerstin Söderström, Finn Skårderud, Merete Glenne Øie
Mothers with a substance use disorder (SUD) are at risk for maladaptive parenting practices, and have heightened likelihood of having experienced childhood adversity themselves. In addition, parental reflective functioning (PRF), a capacity underlying sensitive caregiving, is often low in mothers with SUD. This study examines the relationship between PRF and aversive (emotional, physical, sexual abuse and neglect) and adaptive (safety and competence) experiences, in different developmental phases (early childhood, latency, and adolescence) in mothers with a SUD...
May 15, 2018: Child Abuse & Neglect
https://www.readbyqxmd.com/read/29775851/comparative-study-of-quality-of-life-anxiety-depression-and-fatigue-among-patients-with-neuromyelitis-optica-spectrum-disorder-and-multiple-sclerosis-the-first-report-from-iran
#8
Mahdi Barzegar, Shervin Badihian, Omid Mirmosayyeb, Fereshteh Ashtari, Maryam Jamadi, Shohreh Emami, Leila Jahani, Armaghan Safavi, Vahid Shaygannejad
BACKGROUND: Neuromyelitis optica spectrum disorder (NMOSD) and multiple sclerosis (MS) are associated with reduced Health Related Quality of Life (HRQOL). To the best of our knowledge, change of HRQOL in patients with NMOSD has not been yet measure in Iran. The objective of this study was to assess HRQOL in NMOSD and MS patients and identify related factors METHODS: A cross sectional study of 41 patients with NMOSD and 136 age and sex-match MS patients was performed. A series of questionnaires including Persian validated questionnaires on HRQOL (SF-36), fatigue (MFIS), depression (BDI-II), anxiety (HAM-A) and sleep quality (PSQI) were record...
April 14, 2018: Multiple Sclerosis and related Disorders
https://www.readbyqxmd.com/read/29775832/stressed-out-an-investigation-of-whether-allostatic-load-mediates-associations-between-neighbourhood-deprivation-and-health
#9
Lucy Prior, David Manley, Kelvyn Jones
Deprived neighbourhoods have long been associated with poorer health outcomes. However, many quantitative studies have not evidenced the mechanisms through which place 'gets under the skin' to influence health. The increasing prevalence of biosocial data provides new opportunities to explore these mechanisms and incorporate them into models of contextual effects. The stress pathway is a key biosocial mechanism; however, few studies have explicitly tested it in neighbourhood associations. This paper addresses this gap by investigating whether allostatic load, a biological response to chronic stress, mediates relationships of neighbourhood deprivation to physical and mental health...
May 15, 2018: Health & Place
https://www.readbyqxmd.com/read/29775769/quality-of-life-after-combined-endonasal-endoscopic-odontoidectomy-and-posterior-suboccipital-decompression-and-fusion
#10
Malte Ottenhausen, Andrew F Alalade, Kavelin Rumalla, Prakash Nair, Ali Baaj, Roger Hartl, Ashutosh Kacker, Jeffrey P Greenfield, Vijay K Anand, Theodore H Schwartz
INTRODUCTION: Basilar invagination can result from a variety of systemic diseases that can weaken the structural integrity of the craniocervical junction. Definitive treatment often requires ventral decompression along with posterior decompression and fusion. Endonasal odontoidectomy is a relatively new minimal access procedure, however, quality of life after this procedure has not been reported. METHODS: We reviewed a consecutive database of endonasal odontoidectomy patients and identified those having posterior decompression and fusion...
May 15, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29775747/mediterranean-diet-and-depression-among-older-individuals-the-multinational-medis-study
#11
Maria F Masana, Josep Maria Haro, Anargiros Mariolis, Suzanne Piscopo, Giuseppe Valacchi, Vassiliki Bountziouka, Foteini Anastasiou, Akis Zeimbekis, Dimitra Tyrovola, Efthimios Gotsis, George Metallinos, Anna Polystipioti, Josep-Antoni Tur, Antonia-Leda Matalas, Christos Lionis, Evangelos Polychronopoulos, Labros S Sidossis, Stefanos Tyrovolas, Demosthenes B Panagiotakos
BACKGROUND: Depression has been linked to a large and growing economic and societal burden worldwide. In Europe, depression is one of the most frequent mental disorders across all age groups, but particularly in people aged 65 years and over, and higher depressive symptoms have been reported among individuals with chronic diseases (e.g., diabetes and heart disease). AIM: To evaluate the role of adherence to the Mediterranean diet (MedDiet) in depression in a sample of older people living in the Mediterranean basin...
May 15, 2018: Experimental Gerontology
https://www.readbyqxmd.com/read/29775746/anthropometric-measurements-and-mortality-in-frail-older-adults
#12
Jonathan F Easton, Christopher R Stephens, Heriberto Román-Sicilia, Matteo Cesari, Mario Ulises Pérez-Zepeda
BACKGROUND: As the number of older adults increases, so does the number of frail older adults. Although anthropometry has been widely used as a way to stratify the overall mortality risk of a person, the significance of these measurements becomes blurred in the case of frail older adults who have changes in body composition. Therefore, the aim of this study is to determine the association of anthropometric measurements (body mass index, knee-adjusted height body mass index, waist-to-hip ratio and calf circumference) with mortality risk in a group of older Mexican adults...
May 15, 2018: Experimental Gerontology
https://www.readbyqxmd.com/read/29775683/viscoelastic-modeling-of-the-fusion-of-multicellular-tumor-spheroids-in-growth-phase
#13
Guillaume Dechristé, Jérôme Fehrenbach, Elena Griseti, Valérie Lobjois, Clair Poignard
BACKGROUND: Since several decades, the experiments have highlighted the analogy of fusing cell aggregates with liquid droplets. The physical macroscopic models have been derived under incompressible assumptions. The aim of this paper is to provide a 3D model of growing spheroids, which is more relevant regarding embryo cell aggregates or tumor cell spheroids. METHODS: We extend the past approach to a compressible 3D framework in order to account for the tumor spheroid growth...
May 15, 2018: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/29775648/towards-a-quantitative-model-to-predict-the-toxicity-pathogenicity-potential-of-mineral-fibers
#14
Alessandro F Gualtieri
A number of mineral fibers represent a health hazard because they are classified as cancer-causing chemical/physical toxicants upon (chronic) dust inhalation. Although in the last decades they have been the subject of intensive multidisciplinary investigations, the mechanisms by which mineral fibers induce toxic and pathogenic adverse effects on human health and environment are not yet fully understood. The major intricacy of the biological approach that prevents the design of a conclusive shared model of behavior of mineral fibers in a biological system stems from their very nature with intrinsic variability in chemical, molecular, structural and morphometric parameters, biodurability and surface reactivity...
May 15, 2018: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/29775593/structure-of-telomerase-with-telomeric-dna
#15
Jiansen Jiang, Yaqiang Wang, Lukas Sušac, Henry Chan, Ritwika Basu, Z Hong Zhou, Juli Feigon
Telomerase is an RNA-protein complex (RNP) that extends telomeric DNA at the 3' ends of chromosomes using its telomerase reverse transcriptase (TERT) and integral template-containing telomerase RNA (TER). Its activity is a critical determinant of human health, affecting aging, cancer, and stem cell renewal. Lack of atomic models of telomerase, particularly one with DNA bound, has limited our mechanistic understanding of telomeric DNA repeat synthesis. We report the 4.8 Å resolution cryoelectron microscopy structure of active Tetrahymena telomerase bound to telomeric DNA...
May 17, 2018: Cell
https://www.readbyqxmd.com/read/29775582/src-3-coactivator-governs-dynamic-estrogen-induced-chromatin-looping-interactions-during-transcription
#16
Anil K Panigrahi, Charles E Foulds, Rainer B Lanz, Ross A Hamilton, Ping Yi, David M Lonard, Ming-Jer Tsai, Sophia Y Tsai, Bert W O'Malley
Enhancers are thought to activate transcription by physically contacting promoters via looping. However, direct assays demonstrating these contacts are required to mechanistically verify such cellular determinants of enhancer function. Here, we present versatile cell-free assays to further determine the role of enhancer-promoter contacts (EPCs). We demonstrate that EPC is linked to mutually stimulatory transcription at the enhancer and promoter in vitro. SRC-3 was identified as a critical looping determinant for the estradiol-(E2)-regulated GREB1 locus...
May 17, 2018: Molecular Cell
https://www.readbyqxmd.com/read/29775580/znfx-1-functions-within-perinuclear-nuage-to-balance-epigenetic-signals
#17
Takao Ishidate, Ahmet R Ozturk, Daniel J Durning, Rita Sharma, En-Zhi Shen, Hao Chen, Meetu Seth, Masaki Shirayama, Craig C Mello
Animal cells have a remarkable capacity to adopt durable and heritable gene expression programs or epigenetic states that define the physical properties and diversity of somatic cell types. The maintenance of epigenetic programs depends on poorly understood pathways that prevent gain or loss of inherited signals. In the germline, epigenetic factors are enriched in liquid-like perinuclear condensates called nuage. Here, we identify the deeply conserved helicase-domain protein, ZNFX-1, as an epigenetic regulator and component of nuage that interacts with Argonaute systems to balance epigenetic inheritance...
May 17, 2018: Molecular Cell
https://www.readbyqxmd.com/read/29775549/growth-trajectories-of-young-children-s-objectively-determined-physical-activity-sedentary-behavior-and-body-mass-index
#18
Zan Gao
PURPOSE: This study examined trajectories in children's physical activity (PA), sedentary behavior, and body mass index (BMI) for both genders, and relationships among these trajectories, from childhood through early adolescence. METHODS: A total of 261 seconds and third-grade children (135 girls; Meanage  = 7.81; 73% White) from two U.S. elementary schools participated in this study. Their objective PA, sedentary behavior, and BMI were measured yearly from 2012 to 2015...
May 18, 2018: Childhood Obesity
https://www.readbyqxmd.com/read/29775508/lfr-is-functionally-associated-with-as2-to-mediate-leaf-development-in-arabidopsis
#19
Xiaowei Lin, Dandan Gu, Hongtao Zhao, Yue Peng, Guofang Zhang, Mengge Li, Zhijuan Wang, Xiutang Wang, Sujuan Cui
Leaves are essential organs for plants. We previously identified a functional gene possibly encoding a component of the SWI/SNF complex named LFR (Leaf and Flower Related) in Arabidopsis thaliana. Loss-of-function mutants of LFR displayed obvious defects in leaf morphogenesis, indicating its vital role in leaf development. Here an allelic null mutant of ASYMMETRIC LEAVES2 (AS2), as2-6, was isolated as an enhancer of lfr-1 in petiole length, vasculature pattern and leaf margin development. The lfr as2 double mutants showed enhanced ectopic expression of BP than each of the single mutant, which is consistent with their synergistic genetic enhancement in multiple BP-dependent development processes...
May 18, 2018: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/29775496/young-adult-s-knowledge-and-attitudes-towards-cardiovascular-disease-a-systematic-review-and-meta-analysis
#20
REVIEW
Ronald Trejo, Wendy Cross, John Stephenson, Karen-Leigh Edward
AIMS AND OBJECTIVES: To explore young adult's knowledge and attitudes of cardiovascular disease and its risk factors. BACKGROUND: Cardiovascular disease morbidity is rising and mortality is declining among young adults. However, the knowledge of cardiovascular disease by young adults is not well known. DESIGN: A systematic review with meta-analysis was used. METHODS: The databases of CINHAL, Medline Complete, PsychINFO and Psycharticles were searched for all studies published before June 2016...
May 18, 2018: Journal of Clinical Nursing
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