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Causal attribution

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https://www.readbyqxmd.com/read/28193693/unresponsive-choline-transporter-as-a-trait-neuromarker-and-a-causal-mediator-of-bottom-up-attentional-biases
#1
Ajeesh Koshy Cherian, Aaron Kucinski, Kyle Pitchers, Brittney Yegla, Vinay Parikh, Youngsoo Kim, Paulina Valuskova, Sarika Gurnani, Craig W Lindsley, Randy D Blakely, Martin Sarter
Some rats (sign-trackers; STs) are prone to attribute incentive salience to reward cues, which can manifest as a propensity to approach and contact Pavlovian cues, and for addiction-like behavior. STs also exhibit poor attentional performance, relative to goal-trackers (GTs), which is associated with attenuated acetylcholine (ACh) levels in prefrontal cortex (Paolone et al., 2013). Here, we demonstrate a cellular mechanism, linked to ACh synthesis, that accounts for attenuated cholinergic capacity in STs. First, we found that electrical stimulation of the basal forebrain increased cortical choline transporter (CHT)-mediated choline transport in GTs, paralleled by a redistribution of CHTs to the synaptic plasma membrane...
February 13, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28187788/assessing-the-short-term-impact-of-air-pollution-on-mortality-a-matching-approach
#2
Michela Baccini, Alessandra Mattei, Fabrizia Mealli, Pier Alberto Bertazzi, Michele Carugno
BACKGROUND: The opportunity to assess short term impact of air pollution relies on the causal interpretation of the exposure-response association. However, up to now few studies explicitly faced this issue within a causal inference framework. In this paper, we reformulated the problem of assessing the short term impact of air pollution on health using the potential outcome approach to causal inference. We considered the impact of high daily levels of particulate matter ≤10 μm in diameter (PM10) on mortality within two days from the exposure in the metropolitan area of Milan (Italy), during the period 2003-2006...
February 10, 2017: Environmental Health: a Global Access Science Source
https://www.readbyqxmd.com/read/28164304/blood-group-antigen-matching-influence-on-gestational-outcomes-amigo-study
#3
Meghan Delaney, Agneta Wikman, Leo van de Watering, Henk Schonewille, Jennie P Verdoes, Stephen P Emery, Michael F Murphy, Julie Staves, Susanne Flach, Donald M Arnold, Richard M Kaufman, Alyssa Ziman, Sarah K Harm, Mark Fung, Catherine S Eppes, Nancy M Dunbar, Andreas Buser, Erin Meyer, Helen Savoia, Padmakumari Abeysinghe, Nancy Heddle, Alan Tinmouth, Aicha N Traore, Mark H Yazer
BACKGROUND: Red blood cell (RBC) antigen matching policies to prevent alloimmunization in females of childbearing potential (FCP) vary between centers. To inform transfusion centers responsible for making decisions about matching policies for FCPs, the causal stimulus of the antibodies implicated in severe hemolytic disease of the fetus and newborn (HDFN) must be determined. STUDY DESIGN AND METHODS: We conducted a multinational retrospective study of women with offspring affected by severe HDFN requiring neonatal exchange transfusion and/or intrauterine transfusion...
February 5, 2017: Transfusion
https://www.readbyqxmd.com/read/28163985/reflux-and-voice-disorders-have-we-established-causality
#4
G Todd Schneider, Michael F Vaezi, David O Francis
A trend of attributing abnormal voice changes to reflux has gained momentum among medical professionals over the last few decades. Evidence supporting the connection between reflux and voice and the use of anti-reflux medication in patients with dysphonia is conflicting and deserves careful examination. In the current health care environment, it is important that medical decisions be based on science rather than anecdote and practice patterns. The goal of this review is to investigate the evidence linking reflux and voice changes...
September 2016: Current Otorhinolaryngology Reports
https://www.readbyqxmd.com/read/28154551/prolonged-activation-of-invariant-natural-killer-t-cells-and-th2-skewed-immunity-in-stroke-patients
#5
Connie H Y Wong, Craig N Jenne, Patrick P Tam, Caroline Léger, Andres Venegas, Karla Ryckborst, Michael D Hill, Paul Kubes
BACKGROUND: Infection is highly prevalent and contribute significantly to mortality of stroke patients. In addition to the well described robust systemic lymphocytopenia and skewed T helper 2 (TH2)-immunity after stroke, emerging experimental evidence demonstrate that the development of infection poststroke is attributed by the activation of invariant natural killer T (iNKT) cells. In this prospective study, we examined the levels of a broad spectrum of inflammatory mediators, the activation status of iNKT cell in the blood of patients with various degree of stroke severity, and investigate whether these parameters differ in patients who later develop poststroke infections...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28125392/natural-experiments-an-overview-of-methods-approaches-and-contributions-to-public-health-intervention-research
#6
Peter Craig, Srinivasa Vittal Katikireddi, Alastair Leyland, Frank Popham
Population health interventions are essential to reduce health inequalities and tackle other public health priorities, but they are not always amenable to experimental manipulation. Natural experiment (NE) approaches are attracting growing interest as a way of providing evidence in such circumstances. One key challenge in evaluating NEs is selective exposure to the intervention. Studies should be based on a clear theoretical understanding of the processes that determine exposure. Even if the observed effects are large and rapidly follow implementation, confidence in attributing these effects to the intervention can be improved by carefully considering alternative explanations...
January 11, 2017: Annual Review of Public Health
https://www.readbyqxmd.com/read/28122836/patients-views-on-the-causes-of-their-polymyalgia-rheumatica-a-content-analysis-of-data-from-the-pmr-cohort-study
#7
Maatla Tshimologo, Benjamin Saunders, Sara Muller, Christian D Mallen, Samantha L Hider
OBJECTIVE: To explore primary care polymyalgia rheumatica (PMR) patient beliefs about the causes of their PMR. DESIGN: Qualitative content analysis was conducted on patients' written responses to the question of what they thought had caused their PMR. All data were coded and emergent categories of causal beliefs identified. SETTING: Community patients receiving primary care at general practitioner (GP) practices across England. PARTICIPANTS: Participants were recruited from a primary care PMR inception cohort (n=654)...
January 25, 2017: BMJ Open
https://www.readbyqxmd.com/read/28120398/vitamin-d-serum-levels-are-cross-sectionally-but-not-prospectively-associated-with-late-life-depression
#8
O Jovanova, N Aarts, R Noordam, M Carola-Zillikens, A Hofman, H Tiemeier
OBJECTIVE: The evidence for a prospective association of vitamin D deficiency with the occurrence of late-life depression is limited. We aimed to study the long-term association between vitamin D serum levels and depression in a large population-based study of older adults. METHOD: We included 3251 participants from the Rotterdam Study, aged 55 and older with 32 400 person-years follow-up for depression. Baseline 25-hydroxyvitamin D (25(OH)D) serum levels were analyzed continuously and categorically...
January 25, 2017: Acta Psychiatrica Scandinavica
https://www.readbyqxmd.com/read/28119179/the-chronic-kidney-disease-mineral-bone-disorder-ckd-mbd-advances-in-pathophysiology
#9
REVIEW
Keith A Hruska, Toshifumi Sugatani, Olga Agapova, Yifu Fang
The causes of excess cardiovascular mortality associated with chronic kidney disease (CKD) have been attributed in part to the CKD-mineral bone disorder syndrome (CKD-MBD), wherein, novel cardiovascular risk factors have been identified. New advances in the causes of the CKD-MBD are discussed in this review. They demonstrate that repair and disease processes in the kidneys release factors to the circulation that cause the systemic complications of CKD. The discovery of WNT inhibitors, especially Dickkopf 1 (Dkk1), produced during renal repair as participating in the pathogenesis of the vascular and skeletal components of the CKD-MBD implied that additional pathogenic factors are critical...
January 21, 2017: Bone
https://www.readbyqxmd.com/read/28118379/intergroup-contact-and-outgroup-humanization-is-the-causal-relationship-uni-or-bidirectional
#10
Dora Capozza, Gian Antonio Di Bernardo, Rossella Falvo
The attribution of uniquely human characteristics to the outgroup may favor the search for contact with outgroup members and, vice versa, contact experiences may improve humanity attributions to the outgroup. To explore this bidirectional relationship, two studies were performed. In Study 1, humanity perceptions were manipulated using subliminal conditioning. Two experimental conditions were created. In the humanization condition, the unconditioned stimuli (US) were uniquely human words; in the dehumanization condition, the US were non-uniquely human and animal words...
2017: PloS One
https://www.readbyqxmd.com/read/28114260/can-human-papillomavirus-dna-self-sampling-be-an-acceptable-and-reliable-option-for-cervical-cancer-screening-in-female-sex-workers
#11
Eliza L Y Wong, Annie W L Cheung, Fenwei Huang, Josette S Y Chor
BACKGROUND: The causal relation between human papillomavirus (HPV) and cervical cancer has enabled HPV self-sampling to be envisaged as a possible screening method. OBJECTIVES: The aim of this study is to explore the acceptability and reliability of HPV DNA self-sampling as an alternative option for cervical screening among female sex workers. METHODS: Sixty-eight participants carried out self-sampling for HPV testing, gave a clinician-obtained sample for HPV testing, and a Papanicolaou test...
January 20, 2017: Cancer Nursing
https://www.readbyqxmd.com/read/28107041/sleep-and-optimism-a-longitudinal-study-of-bidirectional-causal-relationship-and-its-mediating-and-moderating-variables-in-a-chinese-student-sample
#12
Esther Yuet Ying Lau, C Harry Hui, Jasmine Lam, Shu-Fai Cheung
While both sleep and optimism have been found to be predictive of well-being, few studies have examined their relationship with each other. Neither do we know much about the mediators and moderators of the relationship. This study investigated (1) the causal relationship between sleep quality and optimism in a college student sample, (2) the role of symptoms of depression, anxiety, and stress as mediators, and (3) how circadian preference might moderate the relationship. Internet survey data were collected from 1,684 full-time university students (67...
January 20, 2017: Chronobiology International
https://www.readbyqxmd.com/read/28104365/mitochondrial-dysfunction-and-mitochondrial-dynamics-the-cancer-connection
#13
REVIEW
Satish Srinivasan, Manti Guha, Anna Kashina, Narayan G Avadhani
Mitochondrial dysfunction is a hallmark of many diseases. The retrograde signaling initiated by dysfunctional mitochondria can bring about global changes in gene expression that alters cell morphology and function. Typically, this is attributed to disruption of important mitochondrial functions, such as ATP production, integration of metabolism, calcium homeostasis and regulation of apoptosis. Recent studies showed that in addition to these factors, mitochondrial dynamics might play an important role in stress signaling...
January 16, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28103456/health-inequalities-in-diabetes-mellitus-and-hypertension-a-parish-level-study-in-the-northern-region-of-portugal
#14
Teresa Leao, Julian Perelman, Manuela Felício, Vasco Machado, Graça Lima
INTRODUCTION: Diabetes and hypertension are highly prevalent conditions in Portugal. Little is known about the geographical and social patterning of these diseases, which precludes the design of targeted health policies. This study aimed to measure the geographical and socioeconomic distribution of type 2 diabetes and hypertension prevalence in the population resident in the Northern region of Portugal, for the year 2013. MATERIAL AND METHODS: An ecological correlation study analyzed the 2,028 parishes of the region...
October 2016: Acta Médica Portuguesa
https://www.readbyqxmd.com/read/28103371/condom-use-and-hiv-status-a-study-of-sex-workers-engaged-with-the-jamaican-aids-support-for-life-jasl
#15
H Budhwani, S Newton, K R Hearld, K Levermore
Objective: HIV prevention programs such as Jamaica AIDS Support for Life (JASL) work to lower the rate of HIV among marginalized groups. Thus, the objective of this study was to evaluate condom use and HIV status in JASL's Sex Worker (SW) population with the intent to identify behavioral differences between this self-selected group and the general SW population in Jamaica. We hypothesized that JASL's SW population would demonstrate higher condom use and a lower prevalence of HIV, potentially attributable to their prevention and education endeavours...
April 4, 2016: West Indian Medical Journal
https://www.readbyqxmd.com/read/28098115/a-novel-fibrillin-1-mutation-in-an-egyptian-marfan-family-a-proband-showing-nephrotic-syndrome-due-to-focal-segmental-glomerulosclerosis
#16
Mohammad Al-Haggar, Ashraf Bakr, Yahya Wahba, Paul J Coucke, Fatma El-Hussini, Mona Hafez, Riham Eid, Abdel-Rahman Eid, Amr Sarhan, Ali Shaltout, Ayman Hammad, Sohier Yahia, Ahmad El-Rifaie, Dina Abdel-Hadi
Marfan syndrome (MFS), the founding member of connective tissue disorder, is an autosomal dominant disease; it is caused by a deficiency of the microfibrillar protein fibrillin-1 (FBN1) and characterized by involvement of three main systems; skeletal, ocular, and cardiovascular. More than one thousand mutations in FBN1 gene on chromosome 15 were found to cause MFS. Nephrotic syndrome (NS) had been described in very few patients with MFS being attributed to membranoproliferative glomerulonephritis secondary to infective endocarditis...
January 2017: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/28093299/freeze-concentration-induced-plga-and-polystyrene-nanoparticle-aggregation-imaging-and-rational-design-of-lyoprotection
#17
Lin Niu, Jayanth Panyam
Long-term storage of stable nanoparticulate systems is critical to the utilization of nanotechnology in biomedical applications. Freeze-drying or lyophilization is the most commonly used approach to preparing stable injectable nano formulations. A detailed understanding of the freezing stress on nanoparticles is essential to the successful preservation of original particle attributes and to the development of reliable lyophilization processes. However, visualization of the freezing process and the underlying mechanisms that result in particle aggregation remains challenging...
January 14, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28087736/imputation-of-orofacial-clefting-data-identifies-novel-risk-loci-and-sheds-light-on-the-genetic-background-of-cleft-lip-%C3%A2-cleft-palate-and-cleft-palate-only
#18
Kerstin U Ludwig, Anne C Böhmer, John Bowes, Miloš Nikolić, Nina Ishorst, Niki Wyatt, Nigel L Hammond, Lina Gölz, Frederic Thieme, Sandra Barth, Hannah Schuenke, Johanna Klamt, Malte Spielmann, Khalid Aldhorae, Augusto Rojas-Martinez, Markus M Nöthen, Alvaro Rada-Iglesias, Michael J Dixon, Michael Knapp, Elisabeth Mangold
Nonsyndromic cleft lip with or without cleft palate (nsCL/P) is among the most common human birth defects with multifactorial etiology. Here, we present results from a genome-wide imputation study of nsCL/P in which, after adding replication cohort data, four novel risk loci for nsCL/P are identified (at chromosomal regions 2p21, 14q22, 15q24 and 19p13). On a systematic level, we show that the association signals within this high-density dataset are enriched in functionally-relevant genomic regions that are active in both human neural crest cells (hNCC) and mouse embryonic craniofacial tissue...
January 13, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28086971/characteristics-and-use-of-urban-health-indicator-tools-by-municipal-built-environment-policy-and-decision-makers-a-systematic-review-protocol
#19
Helen Pineo, Ketevan Glonti, Harry Rutter, Nicole Zimmermann, Paul Wilkinson, Michael Davies
BACKGROUND: There is wide agreement that there is a lack of attention to health in municipal environmental policy-making, such as urban planning and regeneration. Explanations for this include differing professional norms between health and urban environment professionals, system complexity and limited evidence for causality between attributes of the built environment and health outcomes. Data from urban health indicator (UHI) tools are potentially a valuable form of evidence for local government policy and decision-makers...
January 13, 2017: Systematic Reviews
https://www.readbyqxmd.com/read/28078366/genetic-screening-of-wnt4-and-wnt5b-in-two-populations-with-deviating-bone-mineral-densities
#20
Gretl Hendrickx, Eveline Boudin, Ellen Steenackers, Torben Leo Nielsen, Marianne Andersen, Kim Brixen, Wim Van Hul
A role for WNT4 and WNT5B in bone metabolism was indicated by genome-wide association studies (GWAS) and a Wnt4 knockout mouse model. The aim of this study was therefore to replicate and further investigate the causality between genetic variation in WNT4 and WNT5B and deviating bone mineral density (BMD) values. A WNT4 and WNT5B mutation screening was performed in patients with craniotubular hyperostosis using Sanger sequencing. Here, no putative causal mutations were detected. Moreover, a high and low BMD cohort was selected from the Odense Androgen Study population for re-sequencing...
January 12, 2017: Calcified Tissue International
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