bluuebunny/crossref_metadata_2025_split huggingface dataset:
Longitudinal tracing of neurochemical metabolic disorders in working memory neural circuit and optogenetics modulation in rats with vascular cognitive impairment
Authors: Lin Huawei , Jin Tingting , Chen Lewen , Dai Yaling , Jia Weiwei , He Xiaojun , Yang Minguang , Li Jianhong , Liang Shengxiang , Wu Jinsong , Huang Jia , Chen Lidian , Liu Weilin , Tao Jing 
Published: November 2020

Abstract
Objective: Chronic cerebral ischemia leads to vascular cognitive impairment (VCI) that exacerbates along with ischemia time and eventually develops into dementia. Recent advances in molecular neuroimaging contribute to understand its pathological characteristics. We previously traced the anisotropic diffusion of water molecules suggests that chronic cerebral ischemia leads to irreversible progressive damage to white matter integrity. However, the abnormalities of gray matter activity following chronic cerebral ischemia remains not entirely understood.Methods: In this study, in vivo hydrogen proton magnetic resonance spectroscopy (1H-MRS) was applied to longitudinally track the neurochemical metabolic disorder of gray matter associated with working memory, and optogenetics modulation of neurochemical metabolism was performed for targeted treatment of VCI. Results: The results showed that the concentration of N-acetylaspartate (NAA) in the right hippocampus, left hippocampus, right medial prefrontal cortex (mPFC) and mediodorsal thalamus was decreased as early as 7 days after chronic cerebral ischemia, subsequently gamma-aminobutyric acid (GABA) declined whereas myo-inositol (mI) and glutamate (Glu) increased at 14 days, as well as choline (Cho) lost at 28 days, concurrently the change of Glu and GABA in the mPFC and hippocampus was ischemia time-dependent manner within 1 month. Behaviorally, working memory and object recognition memory were impaired at 14 days, 28 days that significantly correlated with neurochemical metabolic disorders. Interestingly, using optogenetics modulation of PV neurons in the mPFC, the metabolic abnormalities of NAA and GABA in working memory neural circuit could be repaired after chronic cerebral ischemia, together with behavior improvements. Conclusions: These findings suggested that as early as 1~4 weeks after chronic cerebral ischemia, the metabolism of NAA, Glu, mI and Cho was synchronously impaired in neural circuit of hippocampus-mediodorsal thalamus-mPFC, and the loss of GABA delayed in the hippocampus, and optogenetics modulation of parvalbumin (PV) neurons in the mPFC can improve the neurochemical metabolism of working memory neural circuit and enhance working memory.
Evaluation of symptoms, radiological findings, laboratory data and outcome in COVID-19 patients with chronic kidney disease at Tehran, Iran
Authors: Keshmiri Yasaman Sadat , Mirzaie Sina Khosravi , Sali Shahnaz , Yadegarynia Davood , Abolghasemi Sara , Tehrani Shabnam , Zamani Amir , Derisi Mohamad Mehdi 
Published: November 2020

Abstract
Background: Chronic kidney disease (CKD) patients are a large population and of significant importance. Except for having an underlying disease, they have some other risk factors, for example, old age, impaired immune function, and other comorbidities that make them more susceptible to the new SARS-COV2 infection.Methods: As data on CKD patients with SARS-CoV-2 Infection is limited, we decided to carry out a cross-sectional study at Labbafinezhad Hospital on 78 CKD patients with approved COVID-19 infection either on dialysis or not. We have also incorporated CKD patients with kidney transplant history. Results: The mean age of the patients was 64.04 years, including 53 women and 25 men. Among all symptoms, dyspnea (19.2%) was the most prevalent one. Laboratory data analysis shows an increase in LDH, Creatinine, and ESR and CRP levels. The most common finding on chest CT-Scan was bilateral ground-glass opacity detected in 31 (86.1%) patients, followed by pleural effusion (12.8%) and atelectasis (19%). Among included patients, 53 (74.6%) had hypoxia (o2 saturation 94% and lower), 47 (81%) had tachypnea (respiratory rate over 16) and 9 (23.1%) had some reduction in the level of consciousness (GCS lower than 15). Conclusion: Due to the important effect of underlying medical conditions on the outcome of COVID-19 patients, evaluation of clinical manifestations, radiologic findings, laboratory data, and outcome of COVID-19 patients with chronic kidney disease is important to establish a perspective for physicians to manage CKD patients.
Reaching the unreached: effectiveness and satisfaction with community-directed distribution of sulfadoxine-pyrimethamine for preventing malaria in pregnancy in rural South-East, Nigeria
Authors: Okedo-Alex Ijeoma Nkem , Akamike Ifeyinwa Chizoba , Alo Chihurumnanya , Agu Adaoha Pearl , Nzeh Chinyere Benedicta , Chinwendu Ndukwe Daniel , Okoro Odii Ogonna , Abateneh Dejene Derseh , Uneke Chigozie Jesse 
Published: November 2020

Abstract
Background Innovative community strategies to increase intermittent preventive treatment with sulfadoxine-pyrimethamine (IPTp-SP) coverage is advocated particularly in rural areas, where health infrastructure is weakest and malaria transmission highest. This study involved proof-of-concept implementation research to determine satisfaction with and effectiveness of community-directed distribution of IPTp-SP on uptake among pregnant women in Ebonyi State, Nigeria. Methods This before-and-after study was carried out in 2019 in a rural community in Ebonyi State Nigeria. The intervention involved advocacy visits, community-wide sensitizations on malaria prevention, house-to-house directly observed IPTp-SP administration, and follow-up visits by trained community-selected community-directed distributors (CDDs). Monthly IPTp-SP coverage was assessed over 5 months and data analysed using SPSS version 20.Results During the study, 229 women received the first dose of IPTp while 60 pregnant women received 5 or more doses of IPTp. The uptake of ≥3 IPTp doses increased from 31.4% before the community-directed distribution of IPTp to 71.6% (P <0.001) by the fourth month post-initiation of the community-directed distribution of IPTp. Sleeping under insecticide-treated net (ITN) the night before the survey increased from 62.4 to 84.3% (P <0.001) while reporting of fever during pregnancy decreased from 64.9 to 17.0% (P <0.001). Although antenatal clinic utilization increased in the primary health centre serving the community, traditional birth attendants and patent medicine vendors in the community remained more patronized. Post-intervention, most mothers rated CDD services well (93.6%), were satisfied (97.6%), and preferred community IPTp administration to facility administration (92.3%).Conclusions Community-directed distribution of IPTp-SP improved uptake of IPTp-SP and ITN use. Mothers were satisfied with the services. The authors recommend sustained large-scale implementation of community-directed distribution of IPTp with active community engagement.
Problems in measuring the JTC-bias in patients with psychotic disorders with the fish task: A secondary analysis of a baseline assessment of a randomized controlled trial&nbsp;
Authors: Pytlik Nico , Soll Daniel , Hesse Klaus , Moritz Steffen , Bechdolf Andreas , Herrlich Jutta , Kircher Tilo , Klingberg Stefan , Landsberg Martin W. , Müller Bernhard W. , Wiedemann Georg , Wittorf Andreas , Wölwer Wolfgang , Wagner Michael , Mehl Stephanie 
Published: November 2020

Abstract
Background: The jumping to conclusions bias (JTC) is considered to be an important causal factor in theoretical models for the formation and maintenance of delusions. However, recent meta-analytic findings show a rather equivocal pattern of results regarding associations between JTC and delusions. Thus, the present study aims to investigate in a large sample whether the JTC-bias is more pronounced in patients with psychotic disorders in comparison to controls and whether the JTC bias is associated with a more severe delusional conviction, persecutory delusions, and positive symptoms in general.Methods: Patients with psychotic disorders (n = 300) enrolled in a therapy trial and healthy controls (n = 51) conducted a variant of the beads task (fish task) as a measure for the JTC-bias at the start of the trial. Further, clinical interviews were used to assess patients’ delusional severity and delusional conviction. Results: There were no statistically significant differences between patients with psychotic disorders (with 53% displaying the JTC-bias) and controls (41%). Furthermore, there were no statistically significant correlations between JTC measures and persecutory delusions, delusional conviction, and positive symptoms.Conclusions: We found no differences in JTC between patients with psychotic disorders and healthy controls, which is in part in line with meta-analytic findings using a wide range of JTC task variants. Interestingly, patients with psychotic disorders displayed JTC rates commonly found in the literature, while healthy control subjects showed an unexpectedly high level of JTC. The task variant we used in the present study (fish task) is discussed as a potential reason for our results, as it may induce a more deliberative reasoning style in controls as compared to the traditional beads task. Furthermore, possible implications for the measurement of the JTC-bias, in general, are discussed.Trial Registration: ISRCTN29242879 (isrctn.com), date of registration: April 12th 2006
The pathological features of hip abductor tendon tears – a cadaveric study
Authors: Zhu Mark , Smith Brittany , Krishna Sanjeev , Musson David S. , Riordan Peter R. , McGlashan Sue R. , Cornish Jillian , Munro Jacob T. 
Published: November 2020

Abstract
Background: The hip abductors are crucial in maintaining pelvic stability. Tears in these tendons are common and often debilitating. There is uncertainty regarding both the histological and macroscopic features of hip abductor tears. This study aims to clarify both the macroscopic and microscopic features of the tendon and enthesis in hip abductor tendon tears.Methods: Thirty-six cadavers with an average age of 81 were dissected, and the hip abductor mechanisms removed en-bloc. The presence, location and size of the tears were recorded and analysed. The samples were processed into histological blocks and viewed using both transmitted and polarised light. Tendon histology was graded using the modified Movin’s score in three sections (deep, middle and superficial layers) and the enthesis graded separately using 5-point criteria. Analysis of variance was used to confirm histological features associated with tears. Results: Tears were found in 24 of 36 samples (67%). The most common finding was an isolated tear in the gluteus minimus (46%), followed by concurrent gluteus medius and gluteus minimus tears (33%). Histology revealed significantly more degeneration in both the tendon (p=0.0005) and enthesis (p=0.0011) when tears were present. Furthermore, these changes were concentrated in the deeper layers of the tendon (p=0.0002) and enthesis (p=0.003). Conclusion: This study demonstrated degeneration as the primary pathology underlying hip abductor tendon tears. Degenerative changes occur in both the tendon and enthesis, with the deeper layers predominantly affected. These findings are important for guiding surgical repair techniques and to aid the development of novel materials and biologics.
Hiding in Plain Sight: The Absence of Consideration of the Gendered Dimensions in ‘Source’ Country Perspectives of Health Worker Migration
Authors: Bourgeault Ivy Lynn , Runnels Vivien , Atanackovic Jelena , Spitzer Denise , Roberts Margaret Walton 
Published: November 2020

Abstract
Background: Gender roles and relations affect both the drivers and experiences of health worker migration, yet policy responses rarely consider these gender dimensions. This lack of explicit attention from source country perspectives can lead to inadequate policy responses. Methods: A Canadian-led research team with co-investigators in the Philippines, South Africa, and India examined the causes, consequences and policy responses to the international migration of health workers from these ‘source’ countries through documentary, interview and survey data with workers and country-based stakeholders. Here we undertake an explicit gender-based analysis highlighting the gender-related influences and implications that emerged from the published literature and policy documents from the decade 2005 to 2015; in-depth interviews with 117 stakeholders; and surveys conducted with 3,580 health workers. Results: The literature on health worker migration from South Africa, India and the Philippines reveal that gender can mediate access and participation in health worker training, employment, and migration. Our analysis of survey data from nurses, physicians and other health workers in South Africa, India and the Philippines and interviews with policy stakeholders, however, reveals a curious absence of how gender might mediate health worker migration. Stakeholders in South Africa described female health workers as “preferred” for “innate” personal characteristics and cultural reasons, and in India that men are directed away from nursing roles particularly because they are considered only for women. That inadequate remuneration was identified as a key migration driver amongst survey respondents in India and the Philippines, where nurses predominated in our sample, may be linked to the impact of underlying gender-based pay inequity. The literature suggests that migration may improve social status of women nurses, but it may also expose them to deskilling, as a result of intersecting racism and sexism in their destination country. Regardless of these underlying influences in migration decision-making, gender is rarely considered either as an important contextual influence or analytic category in the policy responses.Conclusion: An explicit gender-based analysis on health worker migration could offer useful insights for health and social policy responses and emphasize the importance of equity considerations to their decisions in these countries.
Craniofacial morphology/phenotypes influence on mandibular range of movement in the design of a mandibular advancement device
Authors: Sanz Pedro Mayoral , Reyes Mariano Garcia , Torras Alex Bataller , Castillo JA Cabrera , Lagravere Manuel 
Published: November 2020

Abstract
Background. The mandibular opening path movements have different directions according to the craniofacial morphology of the patient but always downward and backward, therefore increasing the collapse of the upper airway. The aim of this work is to determine if there is a relationship between the craniofacial morphology and the mandibular movement to help understand the impact on the mandibular position. Methods. 52 students with full permanent dentition aged 19 to 23 years (mean 21.3 SD 1.7; 29 females and 23 males), participated in the study. Each subject had a lateral cephalometric radiograph taken. The opening angle was determined for two levels of vertical openings at 5 and 10 mm.Results. The opening angle showed a greater variability between subjects ranging from 63.15 to 77.08 for 5 mm angle and from for 61.65 to 75.72 for the 10 mm angle. Differences of facial phenotypes was evident when comparing the individual dissoccluding angle of the low angle horizontal pattern and high angle vertical pattern.Conclusions. The opening angle is related to craniofacial morphology with higher vertical anterior and shorter anteroposterior faces having a more horizontal path of mandibular movement than shorter vertical anterior and longer anteroposterior subjects who have a more vertical path.
Influencing Factors for Prevention of Postpartum Hemorrhage and Early Detection of Childbearing Women at Risk in Northern Province of Rwanda: Beneficiary and Health Worker Perspectives
Authors: Bazirete Oliva , Nzayirambaho Manassé , Umubyeyi Aline , Uwimana Marie Chantal , Marilyn Evans 
Published: November 2020

Abstract
Background: Reduction of maternal mortality and morbidity is a major global health priority. However, much remains unknown regarding factors associated with postpartum hemorrhage (PPH) among childbearing women in the Rwandan context. The aim of this study is to explore the influencing factors for prevention of PPH and early detection of childbearing women at risk as perceived by beneficiaries and health workers in the Northern Province of Rwanda. Methods: A qualitative descriptive exploratory study was drawn from a larger sequential exploratory‐mixed methods study. Semi‐structured interviews were conducted with 11 women who experienced PPH within the 6 months prior to interview. In addition, focus group discussions were conducted with: women’s partners or close relatives (2 focus groups), community health workers (CHWs) in charge of maternal health (2 focus groups) and health care providers (3 focus groups). A socio ecological model was used to develop interview guides to describe factors related to early detection and prevention of PPH in consideration of individual attributes, interpersonal, family and peer influences, intermediary determinants of health and structural determinants. The research protocol was approved by the University of Rwanda, College of Medicine and Health Sciences Institutional Ethics Review Board. Results: We generated four interrelated themes: (1) Meaning of PPH: beliefs, knowledge and understanding of PPH: (2) Organizational factors; (3) Caring and family involvement and (4) Perceived risk factors and barriers to PPH prevention. The findings from this study indicate that PPH was poorly understood by women and their partners. Family members and CHWs feel that their role for the prevention of PPH is to get the woman to the health facility on time. The main factors associated with PPH as described by participants were multiparty and retained placenta. Low socioeconomic status and delays to access health care were identified as the main barriers for the prevention of PPH. Conclusions: Addressing the identified factors could enhance early prevention of PPH among childbearing women. Placing emphasis on developing strategies for early detection of women at higher risk of developing PPH, continuous professional development of health care providers, developing educational materials for CHWs and family members could improve the prevention of PPH. Involvement of all levels of the health system was recommended for a proactive prevention of PPH. Further quantitative research, using case control design is warranted to develop a screening tool for early detection of PPH risk factors for a proactive prevention.
Maintaining proper health records improves machine learning predictions for novel 2019-nCoV
Authors: KHAN KOFFKA , Ramsahai Emilie 
Published: November 2020

Abstract
Background: An ongoing outbreak of a novel coronavirus (2019-nCoV) pneumonia continues to aect the whole world including major countries such as China, USA, Italy, France and the United Kingdom. We present outcome ('recovered', 'isolated' or 'death') risk estimates of 2019-nCoV over 'early' datasets. A major consideration is the likelihood of death for patients with 2019-nCoV.Method: Accounting for the impact of the variations in the reporting rate of 2019-nCoV, we used machine learning techniques (AdaBoost, bagging, extra-trees, decision trees and k-nearest neighbour classiers) on two 2019-nCoVdatasets obtained from Kaggle on March 30, 2020. We used 'country', 'age' and 'gender' as features to predict outcome for both datasets. We included the patient's 'disease' history (only present in the second dataset) to predict the outcome for the second dataset.Results: The use of a patient's 'disease' history improves the prediction of 'death' by more than 7-fold. The models ignoring a patent's 'disease' history performed poorly in test predictions.Conclusion: Our ndings indicate the potential of using a patient's 'disease' history as part of the feature set in machine learning techniques to improve 2019-nCoV predictions. This development can have a positive eect on predictive patient treatment and can result in easing currently overburdened healthcare systems worldwide, especially with the increasing prevalence of second and third wave re-infections in some countries.
A nomogramic model based on clinical and laboratory parameters at admission for predicting the survival of COVID-19 patients
Authors: Ma Xiaojun , Wang Huifang , Huang Junwei , Geng Yan , Jiang Shuqi , Zhou Qiuping , Chen Xuan , Hu Hongping , Li Weifeng , Zhou Chengbin , Gao Xinglin , Peng Na , Deng Yiyu 
Published: November 2020

Abstract
Background and AimCOVID-19 has become a major global threat. The present study aimed to develop a nomogram model to predict the survival of COVID-19 patients based on their clinical and laboratory data at admission.MethodsCOVID-19 patients who were admitted at Hankou Hospital and Huoshenshan Hospital in Wuhan, China from January 12, 2020 to March 20, 2020, whose outcome during the hospitalization was known, were retrospectively reviewed. The categorical variables were compared using Pearson’s χ2-test or Fisher’s exact test, and continuous variables were analyzed using Student’s t-test or Mann Whitney U-test, as appropriate. Then, variables with a P-value of ≤0.1 were included in the log-binomial model, and merely these independent risk factors were used to establish the nomogram model. The discrimination of the nomogram was evaluated using the area under the receiver operating characteristic curve (AUC), and internally verified using the Bootstrap method.ResultsA total of 262 patients (134 surviving and 128 non-surviving patients) were included in the analysis. Seven variables, which included age (relative risk [RR]: 0.905, 95% confidence interval [CI]: 0.868-0.944; P<0.001), chronic heart disease (CHD, RR: 0.045, 95% CI: 0.0097-0.205; P<0.001, the percentage of lymphocytes (Lym%, RR: 1.125, 95% CI: 1.041-1.216; P=0.0029), platelets (RR: 1.008, 95% CI: 1.003-1.012; P=0.001), C-reaction protein (RR: 0.982, 95% CI: 0.973-0.991; P<0.001), lactate dehydrogenase (LDH, RR: 0.993, 95% CI: 0.990-0.997; P<0.001) and D-dimer (RR: 0.734, 95% CI: 0.617-0.879; P<0.001), were identified as the independent risk factors. The nomogram model based on these factors exhibited a good discrimination, with an AUC of 0.948 (95% CI: 0.923-0.973).ConclusionA nomogram based on age, CHD, Lym%, platelets, C-reaction protein, LDH and D-dimer was established to accurately predict the prognosis of COVID-19 patients. This can be used as an alerting tool for clinicians to take early intervention measures, when necessary.