bluuebunny/crossref_metadata_2025_split huggingface dataset:
The development and implementation of a proficiency testing program for SARS-CoV-2 using dried tube specimens in resource-limited countries
Authors: Lutaaya Pius , Guido Ocung , Ssentamu Hasifah Nakato , Kasule George William , Akumu Mary , Kabahita Jupiter Marina , Bagaya Bernard , Musisi Kenneth , Oola Denis , Katuramu Anitah , Nsawotebba Andrew , Kigozi Edgar , Nakazzi Faith , Solomon Joel Kabugo , Adam Isa , Beatrice Orena , Namutebi Joanita , Ayebare Brenda , Nyombi Abdunoor , Manyonge Charles , Patrick Ademun Julius , Fredrick Kangave , Joloba Moses L 
Published: June 2024

Abstract
Introduction
When COVID-19 hit the world in 2019, an enhanced focus on diagnostic testing for SARS-CoV-2 was essential for a successful pandemic response. Testing laboratories stretched their capabilities for the new coronavirus by adopting different test methods. The necessity of having external quality assurance (EQA) mechanisms was even more critical due to this rapid expansion. However, there was a lack of experience in providing the necessary SARS-CoV-2 EQA materials, especially in locations with constrained resources.

Objective
We aimed to create a PT (Proficiency testing) programme based on the Dried Tube Specimens (DTS) method that would be a practical option for molecular based SARS-CoV-2 EQA in Low- and Middle-Income Countries.

Methods
Based on previous ISO/IEC 17043:2010 accreditation experiences and with assistance from the US Centers for Disease Control and Prevention, The Supranational Reference Laboratory of Uganda (adapted the DTS sample preparation method and completed a pilot EQA program between 2020 and 2021. Stability and panel validation testing was conducted on the designed materials before shipping to pilot participants in six African countries. Participants received a panel containing five SARS-CoV-2 DTS samples, transported at ambient conditions. Results submitted by participants were compared to validation results. Participants were graded as satisfactory (≥ 80%) or unsatisfactory (< 80%) and performance reports disseminated.

Results
Our SARS-CoV-2 stability experiments showed that SARS-CoV-2 RNA was stable (-15 to -25 °C, 4 to 8 °C, (18 to 28 °C) room temperature and 35 to 38 °C) as well as DTS panels (4 to 8 °C, 18 to 28 °C, 35 to 38 °C and 45 °C) for a period of 4 weeks. The SARS-CoV-2 DTS panels were successfully piloted in 35 test sites from Zambia, Malawi, Mozambique, Nigeria, and Seychelles. The pilot results of the participants showed good accuracy, with an average of 86% (30/35) concordance with the original SARS CoV-2 expectations.

Conclusion
The SARS-CoV-2 DTS PT panel is reliable, stable at ambient temperature, simple to prepare and requires minimal resources.
Screening of potential hub genes involved in Kidney Wilms tumor via bioinformatics analysis and experimental validation
Authors: Zeng Qiang , Liu Tingting , Qin Lilu , Wang Chen , Peng Guangbei , Liu Zhong , Tao Junfeng 
Published: June 2024

Abstract
Background
Wilms tumor (WT) is the most common pediatric embryonal tumor. Improving patient outcomes requires advances in understanding and targeting the multiple genes and cellular control pathways, but its pathogenesis is currently not well-researched. We aimed to identify the potential molecular biological mechanism of WT and develop new prognostic markers and molecular targets by comparing gene expression profiles of Wilms tumors and fetal normal kidneys.

Methods
Differential gene expression analysis was performed on Wilms tumor transcriptomic data from the GEO and TARGET databases. For biological functional analysis, Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment were utilized. Out of 24 hub genes identified, nine were found to be prognostic-related through univariate Cox regression analysis. These nine genes underwent LASSO regression analysis to enhance the predictive capability of the model. The key hub genes were validated in the GSE73209 datasets, and cell function experiments were conducted to identify the genes’ functions in WiT-49 cells.

Results
The enrichment analysis revealed that DEGs were significantly involved in the regulation of angiogenesis and regulation of cell differentiation. 24 DEGs were identified through PPI networks and the MCODE algorithm, and 9 of 24 genes were related to WT patients’ prognosis. EMCN and CCNA1 were identified as key hub genes, and related to the progression of WT. Functionally, over-expression of EMCN and CCNA1 knockdown inhibited cell viability, proliferation, migration, and invasion of Wilms tumor cells.

Conclusions
EMCN and CCNA1 were identified as key prognostic markers in Wilms tumor, suggesting their potential as therapeutic targets. Differential gene expression and enrichment analyses indicate significant roles in angiogenesis and cell differentiation.
Hypoxemia and its clinical predictors among children with respiratory distress admitted to the University of Gondar Comprehensive Specialized Hospital, Northwest Ethiopia
Authors: Tamene Deresse Gugsa , Toni Alemayehu Teklu , Ali Mohammed Seid 
Published: June 2024

Abstract
Introduction
Hypoxemia is a common complication of childhood respiratory tract infections and non-respiratory infections. Hypoxemic children have a five-fold increased risk of death compared to children without hypoxemia. In addition, there is limited evidence about hypoxemia and clinical predictors in Ethiopia. Therefore, this study was conducted to assess the prevalence and clinical predictors of hypoxemia among children with respiratory distress admitted to the University of Gondar Comprehensive Specialized Hospital.

Methods
An institutional-based cross-sectional study was conducted from December 2020 to May 2021 in northwest Ethiopia. A total of 399 study participants were selected using systematic random sampling. The oxygen saturation of the child was measured using Masimo rad-5 pulse oximetry. SPSS version 21 software was used for statistical analysis.

Result
In this study, the prevalence of hypoxemia among children with respiratory distress was 63.5%. The clinical signs and symptoms significantly associated with hypoxemia were: head-nodding (AOR: 4.1, 95% CI: 1.81–9.28) and chest indrawing (AOR: 3.08, 95% CI: 1.32–7.16) which were considered statistically the risk factors for hypoxemia while inability to feed (AOR: 0.13, 95% CI: 0.02–0.77) was the protective factor for hypoxemia. The most sensitive predictors of hypoxemia were fast breathing with sensitivity (98.4%), nasal flaring (100.0%), chest indrawing (83.6%), and intercostal retraction (93.1%). The best specific predictors of hypoxemia were breathing difficulty with specificity (79.4%), inability to feed (100.0%), wheezing (83.0%), cyanosis (98.6%), impaired consciousness (94.2%), head-nodding (88.7%), and supra-sternal retraction (96.5%).

Conclusion and recommendation
The prevalence of hypoxemia among children was high. The predictors of hypoxemia were the inability to feed, head nodding, and chest indrawing. It is recommended that the health care settings provide immediate care for the children with an inability to feed, head nodding, and chest indrawing. The policymakers better to focus on preventive strategies, particularly those with the most specific clinical predictors.
Impulsivity and inhibitory control in deficit and non-deficit schizophrenia
Authors: Bielecki Maksymilian , Tyburski Ernest , Plichta Piotr , Samochowiec Jerzy , Kucharska-Mazur Jolanta , Podwalski Piotr , Rek-Owodziń Katarzyna , Waszczuk Katarzyna , Sagan Leszek , Michalczyk Anna , Rudkowski Krzysztof , Karabanowicz Ewa , Świątkowska Katarzyna , Misiak Błażej , Bąba-Kubiś Agata , Mak Monika 
Published: June 2024

Abstract
Background
There is conflicting evidence on impulsivity and its potential relationship with inhibitory control in schizophrenia. This study therefore aimed to identify differences in impulsivity and cognitive and motor inhibition between patients with deficit (DS) and non-deficit (NDS) schizophrenia and healthy controls (HC). We also explored the relationships between impulsivity and different dimensions of inhibitory control in all studied groups.

Methods
The sample comprised 28 DS patients, 45 NDS patients, and 39 age-matched HC. A neuropsychological battery was used.

Results
DS patients scored lower in venturesomeness, while those with NDS scored higher in impulsiveness compared to HC. In addition, both groups of patients scored higher on measures of cognitive and motor inhibition, including those relatively independent of information processing speed (although the results were slightly different after adjusting for IQ and/or years of education). Correlations between impulsivity and cognitive inhibition emerged in DS patients, while links between impulsivity and motor inhibition were observed in HC.

Conclusions
Our results suggest the presence of deficits in experimentally assessed inhibitory control in schizophrenia patients, with predominant impulsivity in the NDS population. In addition, impulsivity may affect the cognitive control of inhibition in deficit schizophrenia. Nevertheless, due to the preliminary nature of these findings, they require further empirical verification in future research.
Association between sedentary behavior, screen time and metabolic syndrome among Chinese children and adolescents
Authors: Cheng Xue , Guo Qiya , Ju Lahong , Gong Weiyi , Wei Xiaoqi , Xu Xiaoli , Zhao Liyun , Fang Hongyun 
Published: June 2024

Abstract
Background
The aim of the study was to investigate the relationship between sedentary behavior, screen time and MetS among Chinese children and adolescents aged 7–17 years. Data was obtained from the China National Nutrition and Health Surveillance of Children and Lactating Mothers in 2016–2017.

Methods
Data on sedentary time, screen time, and MetS indicators were obtained through physical and health questionnaires, anthropometric measurements, and clinical examinations. MetS was defined according to the Cook’s criteria. Wilcoxon rank sum test and chi-square test were applied for comparisons of measurement data and counting data, respectively. The relationship between sedentary time, screen time, and MetS and its components was analyzed using a multivariate logistic regression model.

Results
The prevalence of MetS among 7-17-year-old students in 2016–2017 was 5.45%. Compared to those with low sedentary behavior, in high sedentary behavior groups, the prevalence of abdominal obesity, high TG, low HDL-C, and MetS was high in boys, and the prevalence of abdominal obesity, high TG, hyperglycemia, and MetS was high in girls. Moreover, for those who reported ≥ 3 h/day of screen time, the prevalence of abdominal obesity, low HDL-C, and MetS was higher in boys, and the prevalence of abdominal obesity and MetS was higher in girls. After adjusting for confounding variables, the risks of abdominal obesity, high TG, low HDL-C, and MetS were higher in high-level sedentary time group, and the risks of abdominal obesity and MetS were 1.15 and 1.14 times higher for those who spent ≥ 3 h/day on screen time, respectively.

Conclusions
This study shows that high levels of sedentary time and screen time were associated with an increased likelihood of MetS among Chinese children and adolescents aged 7–17 years. Reducing sedentary behavior and screen time may contribute to the prevention of metabolic diseases.
“Put your personality into the call”: A qualitative interview study illuminating strategies for improving men’s engagement on crisis helplines
Authors: Trail Katherine , O’Gorman Kieran , Seidler Zac , Oliffe John , Hunt Tara , Rice Simon 
Published: June 2024

Abstract
Background
Crisis telephone helplines are an integral part of community suicide prevention. Despite high male suicide rates, men’s experiences of these services are poorly understood. The current study explored men’s perspectives of their interactions with helpline counsellors to understand how their engagement on helplines can be enhanced.

Method
Sixteen men (19–71 years) who had previously used a mental health or crisis helpline in Australia completed individual semi-structured interviews about their experiences. Data were analysed using interpretive descriptive methodologies.

Results
Two themes derived from the data related to how men engaged with counsellors on helpline services. First, men emphasized the importance of helpline counsellors creating and maintaining an authentic connection across the call, providing suggestions for strategies to secure connection. Second, men discussed how counsellors can facilitate outcomes through offering space for their narratives and aiding in referrals to other support services when required.

Conclusions
Findings highlight the value of crisis helplines for men’s suicide prevention services while identifying target areas to improve engagement. We discuss implications for the findings including suggestions for gender-sensitive care within crisis helplines.
Association between delayed ambulation and increased risk of adverse events after lumbar fusion surgery in elderly patients
Authors: Wang Shuai-Kang , Chai Xin-Yi , Wang Peng , Kong Chao , Lu Shi-Bao 
Published: June 2024

Abstract
Purpose
The relationship between delayed ambulation (DA) and postoperative adverse events (AEs) following transforaminal lumbar interbody fusion (TLIF) in elderly patients remains elusive. The aim of our study was to evaluate the effects of DA on the postoperative AEs including complications, readmission and prolonged length of hospital stay (LOS).

Methods
This was a retrospective analysis of a prospectively established database of elderly patients (aged 65 years and older) who underwent TLIF surgery. The early ambulation (EA) group was defined as patients ambulated within 48 h after surgery, whereas the delayed ambulation (DA) group was patients ambulated at a minimum of 48 h postoperatively. The DA patients were 1:1 propensity-score matched to the EA patients based on age, gender and the number of fused segments. Univariate analysis was used to compare postoperative outcomes between the two groups, and multivariate logistic regression analysis was used to identify risk factors for adverse events and DA.

Results
After excluding 125 patients for various reasons, 1025 patients (≤ 48 h: N = 659 and > 48 h: N = 366) were included in the final analysis. After propensity score matching, there were 326 matched patients in each group. There were no significant differences in the baseline data and the surgery-related variables between the two groups (p > 0.05). The patients in the DA group had a significant higher incidence of postoperative AEs (46.0% vs. 34.0%, p = 0.002) and longer LOS (p = 0.001). Multivariate logistic regression identified that age, operative time, diabetes, and DA were independently associated with postoperative AEs, whereas greater age, higher international normalized ratio, and intraoperative estimated blood loss were identified as independent risk factors for DA.

Conclusions
Delayed ambulation was an independent risk factor for postoperative AEs after TLIF in elderly patients. Older age, increased intraoperative blood loss and worse coagulation function were associated with delayed ambulation.
Development of a prediction nomogram for 1-month mortality in neonates with congenital diaphragmatic hernia
Authors: Feng Zhong , Wei Yandong , Wang Ying , Liu Chao , Qu Dong , Li Jingna , Ma Lishuang , Niu Wenquan 
Published: June 2024

Abstract
Objectives
Although many prognostic factors in neonates with congenital diaphragmatic hernia (CDH) have been described, no consensus thus far has been reached on which and how many factors are involved. The aim of this study is to analyze the association of multiple prenatal and postnatal factors with 1-month mortality of neonates with CDH and to construct a nomogram prediction model based on significant factors.

Methods
A retrospective analysis of neonates with CDH at our center from 2013 to 2022 was conducted. The primary outcome was 1-month mortality. All study variables were obtained either prenatally or on the first day of life. Risk for 1-month mortality of CDH was quantified by odds ratio (OR) with 95% confidence interval (CI) in multivariable logistic regression models.

Results
After graded multivariable adjustment, six factors were found to be independently and consistently associated with the significant risk of 1-month mortality in neonates with CDH, including gestational age of prenatal diagnosis (OR, 95% CI, P value: 0.845, 0.772 to 0.925, < 0.001), observed-to-expected lung-to-head ratio (0.907, 0.873 to 0.943, < 0.001), liver herniation (3.226, 1.361 to 7.648, 0.008), severity of pulmonary hypertension (6.170, 2.678 to 14.217, < 0.001), diameter of defect (1.560, 1.084 to 2.245, 0.017), and oxygen index (6.298, 3.383 to 11.724, < 0.001). Based on six significant factors identified, a nomogram model was constructed to predict the risk for 1-month mortality in neonates with CDH, and this model had decent prediction accuracy as reflected by the C-index of 94.42%.

Conclusions
Our findings provide evidence for the association of six preoperational and intraoperative factors with the risk of 1-month mortality in neonates with CDH, and this association was reinforced in a nomogram model.
Comparison of outcome of TIP urethroplasty with or without Buck’s Fascia repair
Authors: Hamid Raashid , Baba Aejaz A. 
Published: June 2024

Abstract
Objective
TIP is the most common preformed type of Urethroplasty. The intermediate barrier is used as a waterproofing layer to prevent fistula formation. Many tissues have been utilized as a barrier layer, with varying success rates. The search for a better intermediate layer will continue. In this study, we aim to evaluate the role of Buck’s Fascia as a covering for the neo-urethra to prevent fistula formation in patients who underwent Snodgrass Urethroplasty.

Methods
This prospective study was conducted between 2018 and 2022. Patients were randomly assigned to either Group ‘A’ or Group ‘B’. Group A included patients who underwent the Snodgrass procedure with a Buck’s Fascia cover, while Group B included patients whose neo-urethra was covered with the dartos flap. These patients were closely monitored for the development of short- and long-term complications in both groups, and the results were recorded.

Results
The study involved 164 patients, who underwent midpenile and distal hypospadias repair using the Snodgrass technique. In Group ‘A’ (84 patients), the neo-urethra was covered with Buck’s Fascia, while in Group ‘B’ (80 patients), the neo-urethra was covered with the dartos flap. The mean age of the children was (23.06 ± 16.12) months in group ‘A’ & (26.06 ± 14.07) months in group ‘B’. mean operating time was (40 ± 11.43) minutes, in Group ‘A’, and (70 ± 17.43) minutes, in Group ‘B’. Meatal stenosis occurred in 3.57% of children in Group ‘A’ and 10% of patients in Group ‘B’. Urethral fistulas were encountered in 2.35% of cases in Group ‘A’and 10% in Group ‘B’. The difference between the groups was statistically significant.
CTHRC1 is a prognostic biomarker correlated with immune infiltration in head and neck squamous cell carcinoma
Authors: Zhang Zhichao , Ren Xusheng , Wang Yiling , Liu Ping , Lin Peng , Jin Shumei , Xu Chao 
Published: June 2024

Abstract
Background
Head and neck squamous cell carcinoma (HNSCC) is the sixth most common malignancy worldwide, characterized by high morbidity, high mortality, and poor prognosis. Collagen triple helix repeat containing 1 (CTHRC1) has been shown to be highly expressed in various cancers. However, its biological functions, potential role as a biomarker, and its relationship with immune infiltrates in HNSCC remain unclear. Our principal objective was to analyze CTHRC1 expression, its prognostic implications, biological functions, and its effects on the immune system in HNSCC patients using bioinformatics analysis.

Methods
The expression matrix was obtained from The Cancer Genome Atlas (TCGA) and Gene Expression Omnibus (GEO). CTHRC1 expression in HNSCC was analyzed between tumor and adjacent normal tissues, different stages were compared, and its impact on clinical prognosis was assessed using Kaplan-Meier analysis. Gene Ontology (GO), Kyoto Encyclopedia of Genes and Genomes (KEGG), and Gene Set Variation Analysis (GSVA) were employed for enrichment analysis. The Search Tool for the Retrieval of Interacting Genes database (STRING) was used to analyze protein-protein interactions. Pearson correlation tests were used to investigate the association between CTHRC1 expression and immune checkpoints. The correlation between CTHRC1 and immune infiltration was investigated using CIBERSORT, TIMER, and ESTIMATE.

Results
Compared to adjacent normal tissues, CTHRC1 was found to be highly overexpressed in tumors. Increased expression of CTHRC1 was more evident in the advanced stage of HNSCC and predicted a poor prognosis. Most genes related to CTHRC1 in HNSCC were enriched in physiological functions of Extracellular matrix(ECM) and tumor. Furthermore, several immune checkpoints, such as TNFSF4 and CD276 have been shown to be associated with CTHRC1 expression. Notably, the level of CTHRC1 expression correlated significantly with immune infiltration levels, particularly activated macrophages in HNSCC.

Conclusions
High expression of CTHRC1 predicts poor prognosis and is associated with immune infiltration in HNSCC, confirming its utility as a tumor marker for HNSCC.

Trial registration
Not applicable. All data are from public databases and do not contain any clinical trials.
Does a junior doctor focused ‘Bootcamp’ improve the confidence and preparedness of newly appointed ENT registrars to perform their job roles?
Authors: Rai Amar , Shukla Shivani , Mehtani Nikita , Acharya Vikas , Tolley Neil 
Published: June 2024

Abstract
Background
To assess changes in confidence and preparedness after conducting a 2-day induction bootcamp for novice Ear Nose and Throat (ENT) first year specialty trainee registrars (ST3s) in the United Kingdom (UK). The bootcamp covered common ENT presentations on the ward, and in the elective and emergency settings.

Methods
A total of 32 trainees (ST3 or research fellow) voluntarily registered via an online application form to the Southern ST3 accelerated learning course bootcamp through ENT UK. ENT UK is a membership body that supports ENT trainees throughout their careers. They completed a two-day bootcamp that was hosted at St Mary’s Hospital, London and 10 skills sessions were delivered by either a senior ENT registrar or an ENT consultant. A pre-session questionnaire was distributed to all participants and a post-session questionnaire was provided that assessed the changes in confidence and preparedness of the participants, if any. The responses were scored by a 10-point Likert scale. Only participants who fully completed the pre and post questionnaire were included, which was 29 in total.

Results
Participants self-reported a significant increase in confidence (p < 0.001) and preparedness (p < 0.001) following the bootcamp course. The greatest improvements in comparison to all other stations were self-preparedness in the rigid bronchoscopy station and self-confidence in the sphenopalatine artery (SPA) ligation station.

Conclusion
The use of a two-day bootcamp improved confidence and preparedness of managing common ENT presentations in the ward, elective and emergency settings for ENT ST3s. It provides a useful adjunct in the acquisition of technical and non-technical skills alongside the traditional surgical apprenticeship. In the future, more work is required to assess the impact of bootcamps on patient outcomes and long-term benefits on trainees’ skill retention and clinical proficiency.