bluuebunny/crossref_metadata_2025_split huggingface dataset:
Comprehensive Analysis of Multiple Cohort Datasets Deciphers the Utility of Germline Single-Nucleotide Polymorphisms in Prostate Cancer Diagnosis
Authors: Zhang Wensheng , Dong Yan , Sartor Oliver , Zhang Kun 
Published: April 2021

Abstract

Prostate cancer susceptibility is a polygenic trait. We aimed to examine the controversial diagnostic utility of single-nucleotide polymorphisms (SNP) for prostate cancer. We analyzed two datasets collected from Europeans and one from Africans. These datasets were generated by the genome-wide association studies, that is, CGEMS, BPC3, and MEC-Africans, respectively. About 540,000 SNPs, including 61 risk markers that constitute a panel termed MK-61, were commonly genotyped. For each dataset, we augmented the MK-61 panel to generate an MK-61+ one by adding several thousands of SNPs that were moderately associated with prostate cancer occurrence in external dataset(s). We assessed the diagnostic utility of both panels by measuring their predictive strength for prostate cancer occurrence with AUC statistics. We calculated the theoretical AUCs using quantitative genetics model-based formulae and obtained the empirical estimates via 10-fold cross-validation using statistical and machine learning techniques. For the MK-61 panel, the 95% confidence intervals of the theoretical AUCs (AUC-CI.95) were 0.578–0.655, 0.596–0.656, and 0.539–0.596 in the CGEMS, BPC3, and MEC-Africans cohorts, respectively. For the MK-61+ panels, the corresponding AUC-CI.95 were 0.617–0.663, 0.527–0.736, and 0.547–0.565. The empirical AUCs largely fell within the theoretical interval. A promising result (AUC = 0.703, FNR = 0.354, FPR = 0.353) was obtained in the BPC3 cohort when the MK-61+ panel was used. In the CGEMS cohort, the MK-61+ panel complemented PSA in predicting the disease status of PSA ≥ 2.0 ng/mL samples. This study demonstrates that augmented risk SNP panels can enhance prostate cancer prediction for males of European ancestry, especially those with {\rm{PSA}} \ge 2.0\ $ng/mL.

Prevention Relevance:
This study demonstrates that augmented risk SNP panels can enhance prostate cancer prediction for males of European ancestry, especially those with PSA ≥ 2 ng/mL.
Preoperative Right Ventricular Free‐Wall Longitudinal Strain as a Prognosticator in Isolated Surgery for Severe Functional Tricuspid Regurgitation
Authors: Kim Minkwan , Lee Hyun‐Jung , Park Jun‐Bean , Kim Jihoon , Lee Seung‐Pyo , Kim Yong‐Jin , Chang Sung‐A , Kim Hyung‐Kwan 
Published: April 2021

Background
Severe tricuspid regurgitation (TR) should be intervened before the development of irreversible right ventricular (RV) dysfunction. However, current guidelines do not provide criterion related to RV systolic function to guide optimal surgical timing. We investigated the prognostic value of RV longitudinal strain in patients undergoing isolated surgery for severe functional TR.

Methods and Results

We enrolled 115 consecutive patients (aged 62±10 years; 23.5% men; 62.6% [n=72] with previous left‐sided valve surgery) who underwent isolated surgery for severe functional TR at 2 tertiary centers. Preoperative clinical and echocardiographic parameters, including RV free‐wall longitudinal strain (RVFWSL), were collected. The primary end point was a composite of cardiac death and unplanned readmission attributable to cardiovascular causes 5 years after surgery. Forty patients (34.8%) reached the primary end point during 333 person‐years of follow‐up. There were 11 cardiac deaths and 34 unplanned readmissions attributable to cardiovascular causes, with 5 patients experiencing both. An absolute preoperative RVFWSL <24% was associated with the primary end point (hazard ratio, 2.30; 95% CI, 1.22–4.36;
P
=0.011), independent of clinical risk factors, including European System for Cardiac Operative Risk Evaluation II and hemoglobin levels. Meanwhile, other conventional echocardiographic measures of RV systolic function were not significant. The addition of an absolute RVFWSL <24% provided incremental prognostic value to the clinical model for predicting the primary end point.

Conclusions
Preoperative RVFWSL as an indicator of RV dysfunction was an independent prognosticator in patients undergoing isolated surgery for severe functional TR. Thus, preoperative RVFWSL could help determine the optimal surgical timing for severe functional TR.
Associations of Visceral Adipose Tissue and Skeletal Muscle Density With Incident Stroke, Myocardial Infarction, and All‐Cause Mortality in Community‐Dwelling 70‐Year‐Old Individuals: A Prospective Cohort Study
Authors: Ballin Marcel , Nordström Peter , Niklasson Johan , Nordström Anna 
Published: April 2021

Background
Aging leads to increased visceral adipose tissue (VAT) and reduced skeletal muscle density. To which extent these are associated with the risk of stroke, myocardial infarction (MI), and all‐cause mortality in older adults is unknown.

Methods and Results

A total of 3294 70‐year‐old individuals (49.6% women) underwent a health examination in Umeå, Sweden, during 2012 to 2018. VAT and muscle density were measured using dual‐energy x‐ray absorptiometry and peripheral quantitative computed tomography. Cases of stroke, MI, and all‐cause mortality were collected through national registers. Cox regressions were used to calculate hazard ratios (HRs) and 95% CIs per SD greater VAT and per SD lower muscle density. During a mean follow‐up of 3.6 years, there were 108 cases of stroke or MI, and 97 deaths. Greater VAT (adjusted HR [aHR], 1.56; 95% CI, 1.09–2.22), but not lower muscle density (aHR, 1.14; 95% CI, 0.97–1.34), was associated with increased risk of stroke or MI. Neither VAT (aHR, 0.95; 95% CI, 0.65–1.41) nor muscle density (aHR, 1.11; 95% CI, 0.92–1.34) was associated with all‐cause mortality. The association of VAT with stroke or MI was only significant in men (aHR, 1.86; 95% CI, 1.19–2.91) but not women (aHR, 0.60; 95% CI, 0.25–1.42) (
P
interaction
=0.038).

Conclusions
With the limitation of being an observational study, these findings suggest that VAT is an important obesity‐related predictor of cardiovascular risk in 70‐year‐old men, and by implication, that decreasing VAT may potentially reduce their risk of cardiovascular disease.
The Role of the Ventromedial Prefrontal Cortex and Basal Forebrain in Relational Memory and Inference
Authors: Wing Erik A. , D'Angelo Maria C. , Gilboa Asaf , Ryan Jennifer D. 
Published: April 2021

AbstractThe ventromedial prefrontal cortex (vmPFC) is involved in diverse cognitive operations, from inhibitory control to processing of semantic schemas. When accompanied by damage to the basal forebrain, vmPFC lesions can also impair relational memory, the ability to form and recall relations among items. Impairments in establishing direct relations among items (e.g., A is related to B, B is related to C) can also hinder the transitive processing of indirect relationships (e.g., inferring that A and C are related through direct relations that each contain B). Past work has found that transitive inference improves when the direct relations are organized within an existing knowledge structure, or schema. This type of semantic support is most effective for individuals whose relational memory deficits are mild (e.g., healthy age-related decline) rather than pronounced (e.g., hippocampal amnesia, amnestic mild cognitive impairment). Given that vmPFC damage can produce both relational memory and schema processing deficits, such damage may pose a particular challenge in establishing the type of relational structure required for transitive inference, even when supported by preexisting knowledge. To examine this idea, we tested individuals with lesions to the mPFC on multiple conditions that varied in pre-experimental semantic support and explored the extent to which they could identify both previously studied (direct) and novel transitive (indirect) relations. Most of the mPFC cases showed marked transitive inference deficits and even showed impaired knowledge of preexisting, direct, semantic relations, consistent with disruptions to schema-related processes. However, one case with more dorsal mPFC damage showed preserved ability to identify direct relations and make novel inferences, particularly when pre-experimental knowledge could be used to support performance. These results suggest that damage to the mPFC and basal forebrain can impede establishment of ad hoc relational schemas upon which transitive inference is based, but that appealing to prior knowledge may still be useful for those neurological cases that have some degree of preserved relational memory.
Spatial Relations Trigger Visual Binding of People
Authors: Adibpour Parvaneh , Hochmann Jean-Rémy , Papeo Liuba 
Published: April 2021

Abstract
To navigate the social world, humans must represent social entities and the relationships between those entities, starting with spatial relationships. Recent research suggests that two bodies are processed with particularly high efficiency in visual perception, when they are in a spatial positioning that cues interaction, that is, close and face-to-face. Socially relevant spatial relations such as facingness may facilitate visual perception by triggering grouping of bodies into a new integrated percept, which would make the stimuli more visible and easier to process. We used EEG and a frequency-tagging paradigm to measure a neural correlate of grouping (or visual binding), while female and male participants saw images of two bodies face-to-face or back-to-back. The two bodies in a dyad flickered at frequency F1 and F2, respectively, and appeared together at a third frequency Fd (dyad frequency). This stimulation should elicit a periodic neural response for each body at F1 and F2, and a third response at Fd, which would be larger for face-to-face (vs. back-to-back) bodies, if those stimuli yield additional integrative processing. Results showed that responses at F1 and F2 were higher for upright than for inverted bodies, demonstrating that our paradigm could capture neural activity associated with viewing bodies. Crucially, the response to dyads at Fd was larger for face-to-face (vs. back-to-back) dyads, suggesting integration mediated by grouping. We propose that spatial relations that recur in social interaction (i.e., facingness) promote binding of multiple bodies into a new representation. This mechanism can explain how the visual system contributes to integrating and transforming the representation of disconnected body shapes into structured representations of social events.
Transcranial Direct Current Stimulation Modulates Connectivity of Left Dorsolateral Prefrontal Cortex with Distributed Cortical Networks
Authors: Kim Kamin , Sherwood Matthew S. , McIntire Lindsey K. , McKinley R. Andy , Ranganath Charan 
Published: April 2021

Abstract
Studies have shown that transcranial direct current stimulation increases neuronal excitability of the targeted region and general connectivity of relevant functional networks. However, relatively little is understood of how the stimulation affects the connectivity relationship of the target with regions across the network structure of the brain. Here, we investigated the effects of transcranial direct current stimulation on the functional connectivity of the targeted region using resting-state fMRI scans of the human brain. Anodal direct current stimulation was applied to the left dorsolateral prefrontal cortex (lDLPFC; cathode on the right bicep), which belongs to the frontoparietal control network (FPCN) and is commonly targeted for neuromodulation of various cognitive functions including short-term memory, long-term memory, and cognitive control. lDLPFC's connectivity characteristics were quantified as graph theory measures, from the resting-state fMRI scans obtained prior to and following the stimulation. Critically, we tested pre- to poststimulation changes of the lDLPFC connectivity metrics following an active versus sham stimulation. We found that the stimulation had two distinct effects on the connectivity of lDLPFC: for Brodmann's area (BA) 9, it increased the functional connectivity between BA 9 and other nodes within the FPCN; for BA 46, net connectivity strength was not altered within FPCN, but connectivity distribution across networks (participation coefficient) was decreased. These findings provide insights that the behavioral changes as the functional consequences of stimulation may come about because of the increased role of lDLPFC in the FPCN.
Undergraduate students’ perspectives on the impact of a prison health course
Authors: Cameron Rose B , McLeod Katherine E , Donnelly Leeann , Buxton Jane A , Elwood Martin Ruth 
Published: April 2021

Objective: The stigmatisation of incarceration has significant negative effects on the health and well-being of individuals and communities. At the University of British Columbia in Canada, an undergraduate course on prison health included instruction by people with lived experience of incarceration as part of a teaching approach aimed to reduce stigma. In this study, we sought to understand the impact of this course as described by students. Design: Qualitative interviews with students who completed the course in 2017 were conducted by another former student of the course. Interviews were transcribed and interpretive descriptive methods were used to elucidate findings. Results: Nine former students participated in the study, eight (89%) were women and the median age was 23 years. Analysis yielded the following themes: (1) learning from people with lived experience, (2) de-mystifying through knowledge and understanding, (3) broadened perspectives and self-reflection, (4) future choices and actions and (5) changing views on incarceration. Conclusion: Findings suggest that approaches to address stigma in teaching prison health in an undergraduate course provided students with a deepened understanding of health inequities and determinants of health; increased feelings of compassion and interest in health equity for populations impacted by incarceration; and fostered opportunities for reflection, critical thinking and broadened perspectives.
At home or in hospital: Home treatment and mental health stigma
Authors: Hubbeling Allerdiena A , Smith Jared G 
Published: April 2021

Background: Stigmatized attitudes towards people with mental illness may influence treatment choice for oneself and others. Aim: To gauge the attitudes of the UK general public towards treatment at home for mental illness and to assess the extent to which non-acceptability was related to stigmatized attitudes. Methods: Two hundred and two (101 female) people living in the UK completed an online (vignette) questionnaire in which we asked demographic details and personal experience of mental illness. To measure stigma, we used an adapted version of the Attitudes to Mental Illness Questionnaire (AMIQ) with vignettes asking about treatment at home and using scales for social distance and poor expectations; participants also filled in the Mental Health Knowledge Schedule (MAKS). Results: Participants did not evidence overall agreement with treatment at home for mental illness (i.e. >0; range = −16-to-+16, Mean ( M) = 0.86, 95% confidence interval (CI) = −0.08, 1.80, p = .073), although they showed significant agreement with treatment at home should they experience mental illness themselves (range = −8-to-+8, M = 1.36, CI = 0.82, 1.89, p < .001). Acceptability for treatment at home differed according to specific mental illness considered (range = −4-to-+4); depression ( M = 0.47, CI = 0.13, 0.81, p = .006) and alcohol abuse ( M = 1.46, CI = 1.14,1.77, p < .001) were considered suitable for being treated at home but schizophrenia was not ( M = −0.78, CI = −1.13,−0.43, p < .001). Multivariate analyses revealed that older age and attitudes indicating comfort with less social distance from people with mental illness were independently associated with treatment at home agreeability. Conclusions: Public acceptability of home treatment for mental illness remains ambivalent in the UK, most obviously when considering treatment approaches for individuals other than themselves and for people with schizophrenia. Disagreement with home treatment is particularly evident in younger people and those who prefer less social contact with people with mental illness.
A systematic review and meta-analysis comparing the efficacy of cyanoacrylate ablation over endovenous thermal ablation for treating incompetent saphenous veins
Authors: Guo Julong , Zhang Fan , Guo Jianming , Guo Lianrui , Gu Yongquan , Huang Ying 
Published: April 2021

Objectives The aim of this study was to systemically review and analyze the efficacy of cyanoacrylate ablation (CA) in comparison with endovenous thermal ablation (ETA) for the treatment of incompetent saphenous veins. Methods A systematic literature search was conducted using databases of Pubmed, Embase, and Cochrane Library from the times of their inception to April 2020. Studies were selected based on inclusion and exclusion criteria after assessing the risk of bias in comparative studies with Cochrane and rating quality of evidence with the GRADE methodology. The meta-analysis was carried out using the Review Manager 5.4 program to conduct homogeneity tests. Results One cohort study and three randomized controlled trials (RCT), including a total of 1457 participants were included in the meta-analysis. ETA included endovenous laser ablation (ELVA) and radiofrequency ablation (RFA) in the selected studies. Comparison between CA and a combination of EVLA and RFA or RFA alone were carried out in two of RCTs, while comparison between CA with EVLA was conducted in one RCT and the cohort study. There was no statistical difference in closure rates between CA and ETA after pooled analysis. Similar symptom alleviation observed between different groups. However, the CA group showed a lower ecchymosis rate than RFA and a significantly lower incidence of adverse events, such as ecchymosis, phlebitis and paresthesia, than EVLA. Compared with ETA, the patients received CA treatment exhibited lower pain scores in a shorter procedure duration without needing compression stocking, returned to normal life sooner, and had significantly better quality of care. There was no significant difference in the number needed to treat for additional therapy after three months of follow-up between groups. Conclusions This meta-analysis indicates that CA has better overall outcomes than ETA and offers superior clinical benefits in the treatment of incompetent saphenous veins.
Culture in the spotlight—cultural adaptation and content validity of the integrated palliative care outcome scale for dementia: A cognitive interview study
Authors: Hodiamont Farina , Hock Helena , Ellis-Smith Clare , Evans Catherine , de Wolf-Linder Susanne , Jünger Saskia , Diehl-Schmid Janine , Burner-Fritsch Isabel , Bausewein Claudia 
Published: April 2021

Background: Dementia is a life-limiting disease with high symptom burden. The Integrated Palliative Care Outcome Scale for Dementia (IPOS-Dem) is the first comprehensive person-centered measure to identify and measure palliative care needs of people with dementia. However, such a measure is missing in the German health care system. Aim: To develop a culturally adapted German version of the IPOS-Dem and determine its content validity as a foundation for comprehensive psychometric testing. Design: Cognitive interview study with intermittent analysis and questionnaire adaptation. Interview guide and coding frame followed thematic analysis according to Willis complemented by Tourangeau’s model of cognitive aspects of survey methodology: comprehension, retrieval, judgment, response. Participants: Purposive sample with professionals ( n = 29) and family carers ( n = 6) of people with advanced dementia in seven nursing homes and person’s own home care in four interview rounds ( n = 11; 10; 7; 7). Results: IPOS-Dem was regarded as comprehensive and accessible. Cultural adaption pertained to issues of comprehension and judgment. Comprehension challenges referred to the person-centered concept of “being affected by” used in the POS-measures. Judgment problems related to persons with limited communication causing challenges in assessment. Conclusion: Most issues of cultural adaptation could be addressed by questionnaire modifications. However, interviews unveiled fundamental challenges for using proxy reported person-centered assessments. Continuous training on how to use the instrument is imperative to integrate the person-centered approach of palliative care into nursing homes as a key provider of generalist palliative care for people with dementia. The refined version is ready for psychometric testing.
Optimization of a decellularization protocol of porcine tracheas. Long-term effects of cryopreservation. A histological study
Authors: Milian Lara , Sancho-Tello María , Roig-Soriano Joan , Foschini Giovanna , Martínez-Hernández Néstor J , Más-Estellés Jorge , Ruiz-Sauri Amparo , Zurriaga Javier , Carda Carmen , Mata Manuel 
Published: April 2021

Objective: The aim of this study was to optimize a decellularization protocol in the trachea of Sus scrofa domestica (pig) as well as to study the effects of long-term cryopreservation on the extracellular matrix of decellularized tracheas. Methods: Porcine tracheas were decellularized using Triton X-100, SDC, and SDS alone or in combination. The effect of these detergents on the extracellular matrix characteristics of decellularized porcine tracheas was evaluated at the histological, biomechanical, and biocompatibility level. Morphometric approaches were used to estimate the effect of detergents on the collagen and elastic fibers content as well as on the removal of chondrocytes from decellularized organs. Moreover, the long-term structural, ultrastructural, and biomechanical effect of cryopreservation of decellularized tracheas were also estimated. Results: Two percent SDS was the most effective detergent tested concerning cell removal and preservation of the histological and biomechanical properties of the tracheal wall. However, long-term cryopreservation had no an appreciable effect on the structure, ultrastructure, and biomechanics of decellularized tracheal rings. Conclusion: The results presented here reinforce the use of SDS as a valuable decellularizing agent for porcine tracheas. Furthermore, a cryogenic preservation protocol is described, which has minimal impact on the histological and biomechanical properties of decellularized porcine tracheas.