bluuebunny/crossref_metadata_2025 huggingface dataset:
Artificial intelligence for non-mass breast lesions detection and classification on ultrasound images: a comparative study
Authors: Li Guoqiu , Tian Hongtian , Wu Huaiyu , Huang Zhibin , Yang Keen , Li Jian , Luo Yuwei , Shi Siyuan , Cui Chen , Xu Jinfeng , Dong Fajin
Published: September 2023

Background

This retrospective study aims to validate the effectiveness of artificial intelligence (AI) to detect and classify non-mass breast lesions (NMLs) on ultrasound (US) images.

Methods

A total of 228 patients with NMLs and 596 volunteers without breast lesions on US images were enrolled in the study from January 2020 to December 2022. The pathological results served as the gold standard for NMLs. Two AI models were developed to accurately detect and classify NMLs on US images, including DenseNet121_448 and MobileNet_448. To evaluate and compare the diagnostic performance of AI models, the area under the curve (AUC), accuracy, specificity and sensitivity was employed.

Results

A total of 228 NMLs patients confirmed by postoperative pathology with 870 US images and 596 volunteers with 1003 US images were enrolled. In the detection experiment, the MobileNet_448 achieved the good performance in the testing set, with the AUC, accuracy, sensitivity, and specificity were 0.999 (95%CI: 0.997-1.000),96.5%,96.9% and 96.1%, respectively. It was no statistically significant compared to DenseNet121_448. In the classification experiment, the MobileNet_448 model achieved the highest diagnostic performance in the testing set, with the AUC, accuracy, sensitivity, and specificity were 0.837 (95%CI: 0.990-1.000), 70.5%, 80.3% and 74.6%, respectively.

Conclusions

This study suggests that the AI models, particularly MobileNet_448, can effectively detect and classify NMLs in US images. This technique has the potential to improve early diagnostic accuracy for NMLs.
Notifications of work-related injuries and diseases: an observational study on a mining disaster
Authors: Costa da Silva Rita de Cássia , Pires de Novais Maykon Anderson , Zucchi Paola
Published: September 2023

Introduction

Accidents at work are events that endanger the health and life of workers. They are considered a public health problem, being the object of studies and actions in the Brazilian health system. The collapsed of the ore tailings dam in the municipality of Brumadinho, Brazil, in January 2019, shocked the world due to the proportion of environmental and human damage caused. In this context, concern for the health of workers gained prominence. This paper evaluated the impact of the collapse of the mining tailings dam in Brumadinho, on notifications of occupational health problems before and after the disaster.

Methods

An observational, longitudinal and retrospective study, of the time series type with a statistical approach was carried out on notifications of work-related injuries and diseases, available in the local database of the Notifiable Diseases Information System between January 2017 and December 2021.

Results

During the study period, 520 notifications of work-related injuries and conditions were registered. Of this total, 67.3% were serious work accidents, 26.0% mental disorders, 12.3% accidents with biological material and 2.9% repetitive strain injuries/musculoskeletal disorders, occupational dermatoses and induced hearing loss by noise. Occurrences were more frequent in 2019, the year in which the mining disaster occurred, recording 65.2% of total notifications. Regarding the volume of notifications after the disaster, there was a statistically significant reduction (p < 0.001) for accidents with biological material; significant increase for severe work accident and mental disorder. The average time between the occurrence of the injury and the notification showed a statistically significant reduction for accidents involving biological material (p = 0.001) and a significant increase for serious accidents at work (p = 0.016).

Conclusions

It was demonstrated that there were changes in the number of notifications when comparing the period before and after the mining disaster, with a consequent impact on the health of workers, which may persist over the years.
Public involvement in the Swedish health system: citizen dialogues with unclear outcomes
Authors: Fredriksson Mio , Modigh Anton
Published: September 2023

Background

In systems with representative democracy, there is a growing consensus that citizens should have the possibility to participate in decisions that affect them, extending beyond just voting in national or local/regional elections. However, significant uncertainty remains regarding the role of public involvement in decision-making, not least in healthcare. In this article, we focus on citizen dialogues (CDs) in a health system that is politically governed and decentralised. The aim of the study was to evaluate the functioning of citizen dialogues in the Swedish health system in terms of representation, process, content, and outcomes.

Methods

This study was conducted using a qualitative case design focusing on CDs at the regional level in Sweden. The regional level is politically elected and responsible for funding and provision of healthcare. The data consist of public documents describing and evaluating the CDs and interviews, which were analysed drawing on a modified version of the Abelson et al. analytical framework for evaluating public involvement in healthcare.

Results

Some CDs were an attempt to counteract political inequality by inviting groups that are less represented, while others aimed to increase legitimacy by reducing the distance between policymakers and citizens. The results from the CDs—which were often held in the beginning of a potential policy process—were often stated to be used as input in decision-making, but how was not made clear. Generally, the CDs formed an opportunity for members of the public to express preferences (on a broad topic) rather than developing preferences, with a risk of suggestions being too unspecific to be useful in decision-making. The more disinterested public perspective, in comparison with patients, reinforced the risk of triviality. A need for better follow-up on the impact of the CDs on actual decision-making was mentioned as a necessary step for progress.

Conclusions

It is unclear how input from CDs is used in policymaking in the politically governed regions responsible for healthcare in Sweden. The analysis points to policy input from CDs being too general and a lack of documentation of how it is used. We need to know more about how much weight input from CDs carry in relation to other types of information that politicians use, and in relation to other types of patient and public involvement.
Comparison of costs associated with transcatheter mitral valve repair: PASCAL vs MitraClip in a real-world setting
Authors: Haurand Jean Marc , Haschemi Jafer , Oehler Daniel , Heinen Yvonne , Polzin Amin , Kelm Malte , Horn Patrick
Published: September 2023

Aims

We aimed to conduct a clinical process cost analysis to evaluate all upcoming costs of mitral valve transcatheter edge-to-edge repair (M-TEER) treatment using the MitraClip and the PASCAL repair system.

Methods

First, we prospectively enrolled 107 M-TEER patients treated with either the PASCAL or MitraClip system and compared all upcoming costs during the M-TEER procedure and the associated in-hospital stay. Second, we retrospectively analysed 716 M-TEER procedures with regard to the occurrence of complications and their associated costs. All materials used in the catheterization laboratory for the procedures were evaluated. The cost analysis considered various expenses, such as general in-hospital costs, device costs, catheter laboratory and material costs.

Results

In the prospective study, 51 patients were treated using the PASCAL system, and 56 were treated using the MitraClip system. The two groups had comparable baseline characteristics and comorbidities. The total in-hospital costs were 25 414 (Interquartile range (IQR) 24 631, 27 697) € in the PASCAL group and 25 633 (IQR 24 752, 28 256) € in the MitraClip group (p = 0.515). The major cost driver was initial material expenditure, mostly triggered by device costs, which were similar to the PASCAL and MitraClip systems. Overall intensive care unit and general ward costs did not differ between the PASCAL and MitraClip groups. In the retrospective analysis, M-TEER-related complications were rare but were associated with higher costs, mainly due to prolonged hospitalisation.

Conclusion

The major cost driver of M-TEER was the material expenditure, which was mostly triggered by high device costs. The costs of treating patients were similar for the PASCAL and MitraClip systems. M-TEER-related complications are associated with higher costs, mainly due to prolonged hospitalisation. This analysis provides valuable insights into reducing expenses by modifying the process of M-TEER.
Assessment of hospitalisation costs and their determinants among Covid-19 patients in South Central Ethiopia
Authors: Kaso Abdene Weya , Mohammed Esmael , Agero Gebi , Churiso Gemechu , Kaso Taha , Ewune Helen Ali , Hailu Alemayehu
Published: September 2023

Background

The coronavirus disease 2019 (Covid-19) pandemic is a global public health problem. The Covid-19 pandemic has had a substantial impact on the economy of developing countries, including Ethiopia.This study aimed to determine the hospitalisation costs of Covid-19 and the factors associated with the high cost of hospitalisation in South Central Ethiopia.

Methods

A retrospective cost analysis of Covid-19 patients hospitalised between July 2020 and July 2021 at Bokoji Hospital Covid-19 Treatment Centre was conducted using both the micro-costing and top-down approaches from the health system perspective. This analysis used cost data obtained from administrative reports, the financial reports of the treatment centre, procurement invoices and the Covid-19 standard treatment guidelines. The Student’s t-test, Mann-Whitney U test or Kruskal-Wallis test was employed to test the difference between sociodemographic and clinical factors when appropriate.To identify the determinants of cost drivers in the study population, a generalised linear model with gamma distribution and log link with a stepwise algorithm were used.

Results

A total of 692 Covid-19 patients were included in the costing analysis. In this study, the mean cost of Covid-19–infected patients with no symptoms was US$1,073.86, with mild symptoms US$1,100.74, with moderate symptoms US$1,394.74 and in severe–critically ill condition US$1,708.05.The overall mean cost was US$1,382.50(95% CI: 1,360.60–1,404.40) per treated episode.The highest mean cost was observed for personnel, accounting for 64.0% of the overall cost. Older age, pre-existing diseases, advanced disease severity at admission, admission to the intensive care unit, prolonged stay on treatment and intranasal oxygen support were strongly associated with higher costs.

Conclusions

This study found that the clinical management of Covid-19 patients incurred significant expenses to the health system. Factors such as older age, disease severity, presence of comorbidities, use of inhalation oxygen therapy and prolonged hospital stay were associated with higher hospitalisation costs.Therefore, the government should give priority to the elderly and those with comorbidities in the provision of vaccination to reduce the financial burden on health facilities and health systems in terms of resource utilisation.
Food insecurity and levels of marginalization: food accessibility, consumption and concern in Mexico
Authors: Martínez-Martínez Oscar A. , Gil-Vasquez Karol , Romero-González María Beatriz
Published: September 2023

Background

Food insecurity continues to be a problem throughout the world. When estimating food insecurity, few studies analyze the contexts where the phenomenon takes place. By bearing in mind levels of marginalization in four states of Mexico, this paper answers two questions: (I) What problems are experienced with access to food, and how these difficulties affect the amount of food consumed in households? and (II) How do households experience the concern of running out of food?

Methods

Our qualitative study draws data from urban and semi-urban areas of four Mexican states: Mexico City, Tamaulipas, the State of Mexico, and Oaxaca. Each state presents different levels of well-being. The study’s participants are selected using the snowball method. Eligibility criteria are based on demographic characteristics such as education, age, and gender. A thematic analytical approach is conducted to analyze collected data from a total of 212 semi-structured interviews.

Results

The study’s findings indicate that concern of food scarcity is a generalized feeling among participants across different levels of marginalization. Individuals with stable jobs living in contexts of low levels of marginalization experience worriedness when their budgets tightened before the end of the payday, a bi-weekly payment format, named the quincena in México. This psychological state of mind changes through the payday cycle, a period when the direct relationship between food accessibility and consumption weakens. In response, individuals develop strategies to cope with the uncertainty of experiencing food insecurity, such as rationing food portions and/or hoarding food supplies. Even when food accessibility exists, interviewees identify insufficient income as the primary issue in contexts of low and very low levels of marginalization.

Conclusions

Conclusive remarks drawn from our analysis underline the importance of the context of marginalization in influencing households’ experiences with food insecurity. At the quincena’s end, food insecurity increases, even in contexts of very low marginalization. Our study calls for rethinking the scales employed to measure food insecurity, specifically the questions related to fear of food scarcity. Coping strategies are implemented by surveyed individuals to resolve issues and repercussions that emerge from experiencing food insecurity differ by context of marginalization.
Application and risk prediction of thrombolytic therapy in cardio-cerebrovascular diseases: a review
Authors: Zhang Kexin , Jiang Yao , Zeng Hesong , Zhu Hongling
Published: September 2023

Cardiocerebrovascular diseases (CVDs) are the leading cause of death worldwide, consuming huge healthcare budget. For CVD patients, the prompt assessment and appropriate administration is the crux to save life and improve prognosis. Thrombolytic therapy, as a non-invasive approach to achieve recanalization, is the basic component of CVD treatment. Still, there are risks that limits its application. The objective of this review is to give an introduction on the utilization of thrombolytic therapy in cardiocerebrovascular blockage diseases, including coronary heart disease and ischemic stroke, and to review the development in risk assessment of thrombolytic therapy, comparing the performance of traditional scales and novel artificial intelligence-based risk assessment models.
Role of the cGAS-STING pathway in radiotherapy for non-small cell lung cancer
Authors: Yang Chunsheng , Liang Yan , Liu Ning , Sun Meili
Published: September 2023

One of the most important therapeutic interventions for non-small cell lung cancer is radiotherapy. Ionizing radiation (IR) is classified by traditional radiobiology principles as a direct cytocidal therapeutic agent against cancer, although there is growing recognition of other antitumor immunological responses induced by this modality. The most effective therapeutic combinations to harness radiation-generated antitumor immunity and enhance treatment results for malignancies resistant to existing radiotherapy regimens could be determined by a more sophisticated understanding of the immunological pathways created by radiation. Innate immune signaling is triggered by the activation of cGAS-STING, and this promotes adaptive immune responses to help fight cancer. This identifies a molecular mechanism radiation can use to trigger antitumor immune responses by bridging the DNA-damaging ability of IR with the activation of CD8 + cytotoxic T cell-mediated killing of tumors. We also discuss radiotherapy-related parameters that affect cGAS-STING signaling, negative consequences of cGAS-STING activation, and intriguing treatment options being tested in conjunction with IR to support immune activation by activating STING-signaling. Improved therapeutic outcomes will result from a better understanding of how IR promotes cGAS-STING signaling in immune-based treatment regimens that maximize radiotherapy’s anticancer effectiveness.
A child with polyarthritis and chronic lung disease: a case report of ataxia-telangiectasia
Authors: De Nardi Laura , Natale Marco Francesco , Messia Virginia , Tomà Paolo , De Benedetti Fabrizio , Insalaco Antonella
Published: September 2023

Background

Ataxia-telangiectasia (A-T) is a rare autosomal recessive DNA repair disorder, characterized by progressive cerebellar degeneration, telangiectasia, immunodeficiency, recurrent sinopulmonary infections, radiation sensitivity, premature aging and predisposition to cancer. Although the association with autoimmune and chronic inflammatory conditions such as vitiligo, thrombocytopenia and arthritis has occasionally been reported, an onset with articular involvement at presentation is rare.

Case presentation

We herein report the case of a 7-year-old Caucasian girl who was admitted to the Rheumatology Department with a history of febrile chough and polyarthritis which led initially to the suspicion of an autoinflammatory disease. She had overt polyarthritis with knees deformities and presented with severe pneumonia. A chest Computed Tomography (CT) scan showed bilateral bronchiectasis, parenchymal consolidation and interstitial lung disease; rheumatoid factor and type I interferon signature resulted negative, therefore excluding COatomer Protein subunit Alpha (COPA) syndrome. A diagnosis of sarcoidosis had been suspected based on histological evidence of granulomatous liver inflammation, but ruled out after detecting normal angiotensin converting enzyme and chitotriosidase blood levels. Based on her past medical history characterized by at least six episodes of pneumonia in the previous 4 years, immunological phenotyping was performed. This showed complete IgA and IgE deficiency with defective antigen-specific antibodies to Pneumococcal, Tetanus toxin and Hemophilus Influenzae B vaccines. Additionally, low numbers of B cells and recent thymic emigrants (RTE) were found (CD4Ra 1.4%), along with a low CD4+/CD8 + T cells ratio (< 1). Finally, based on gait disturbances (wobbly wide-based walking), serum alfa-fetoprotein was dosed, which resulted increased at 276 ng/ml (normal value < 7 ng/ml). A diagnosis of Ataxia-Telangiectasia was made, strengthened by the presence of bulbar telangiectasia, and then confirmed by Whole Exome Sequencing (WES).

Conclusions

Although rare, A-T should always be ruled out in case of pulmonary bronchiectasis and gait disturbances even in the absence of bulbar or skin telangiectasia. Autoimmune and granulomatous disorders must to be considered as differential diagnosis.
Progress from morbidity control to elimination as a public health problem of schistosomiasis and the status of soil-transmitted helminth infection in Togo: a second impact assessment after ten rounds of mass drug administration
Authors: Dorkenoo Ameyo M. , Phillips Anna E. , Klein Luke , Lack Fiali , Ataba Essoham , Yakpa Kossi , Tagba Atna-Edi , Assoti Bozi-Esso , Sossou Efoe , Tchalim Mawèké , Datagni Gbati , Seim Anders , Milord Marie Denise , Kassankogno Yao
Published: September 2023

Background

Due to the burden of schistosomiasis (SCH) and soil-transmitted helminths (STH), Togo Ministry of Health launched a program for Preventive Chemotherapy Neglected Tropical Diseases (PC-NTDs) in 2009, initiating integrated mass drug administration (MDA) the following year for the three PC-NTDs: SCH, STH and onchocerciasis. Significant reduction of infection across the country was noted in 2015 during the first impact assessment, following 5 years of high-coverage MDA implemented at the sub-district level for SCH and district level for STH. After another 5 years of effective MDA, a second survey was conducted in 2021 to re-evaluate the situation of SCH and STH.

Methods

A cross-section of school-aged children was taken across ten districts of Togo. A total of 302 schools in 92 sub-districts were sampled, with 24 school-aged children per school resulting in 7248 children surveyed. Urine samples were tested by haemastix® for Schistosoma haematobium, with urine filtration for the presence of eggs conducted on haematuria-positive samples. Stool samples were collected in a subset of 34 sub-districts in seven out of the ten surveyed districts, where STH and Schistosoma mansoni endemicity was high during the 2015 impact assessment. Duplicate (two) Kato-Katz analysis was performed for each stool sample. Sociodemographic and school-level water, sanitation and hygiene information was also collected.

Results

Overall, SCH prevalence was 5.90% (95% CI: 5.4–6.5), with 5.09% (95% CI: 4.64–5.67) for S. haematobium and 2.56% (95% CI: 1.98–3.29) for S. mansoni. STH prevalence was 19.7% (95% CI: 18.2–21.4), with 19.6% (95% CI: 18.1–21.3) hookworm, 0.08% (95% CI: 2.2–5.8) Trichuris trichiura and 0.04% (95% CI: 0.01–0.33) Ascaris lumbricoides. Compared to baseline, a significant reduction in both SCH (22.2% to 5.90%) and STH (29.2% t0 19.7%) prevalence was observed. Children aged 5–9 years were less infected than older peers aged 10–14 years: 4.76% vs. 7.53% (P < 0.01) for SCH and 17.2% vs. 23.0% (P < 0.01) for STH.

Conclusions

After 10 years of high coverage integrated MDA, Togo has achieved low prevalence SCH infection through the sub-district MDA implementation with considerable infection heterogeneity within sub-districts. As STH infection has not reached a level where the infections are not a public health problem, the sub-district treatment strategy could also be adopted in addition to improvement of treatment coverage among preschool age children and hygiene and sanitation practices.

Graphical Abstract
Exploring the structure of the university-students obsessive–compulsive tendency scale in Iranian university students: a network analysis study
Authors: Davoudi Mohammadreza , Sadoughi Mitra , Pourshahbaz Abbas , Dolatshahi Behrooz , Astaneh Ali Nazeri
Published: September 2023

Introduction

A risk factor for developing obsessive–compulsive disorder (OCD) in non-clinical samples is obsessive–compulsive tendencies (OCT). An OCT scale has recently been developed for university students (UOC) and showed promising psychometric properties. However, no validated Persian language scale evaluates OCT in non-clinical samples. Accordingly, this study aimed to validate the Persian version of the UOC in Iranian university students.

Methods

Three hundred sixty-eight university students (54.6% females, mean ages: 22.4 ± 4.51) entered the study. The Persian version of UOC was evaluated concerning the structure of Exploratory Factor Analysis (EFA), Confirmatory factor analysis (CFA), and Exploratory graph analysis (EGA). Regarding the construct validity, the concurrent validity was assessed between the UOC and The Obsessive–Compulsive Inventory-Revised (OCI-R), Kessler Psychological Distress Scale (K10), and Yale-Brown Obsessive–Compulsive Scale (Y-BOCS). We calculated Cronbach’s alpha to evaluate the reliability of the UOC. All statistical calculations were done in R programming language (in R-Studio Desktop version 4.2.1).

Results

The Persian version of UOC showed a convenient internal consistency with Cronbach’s alpha coefficient for the total scale 0.88. UOC scores were significantly correlated with OCI-R, K-10, and YBOCS. The EFA and EGA showed four and three-factor solutions with 25 and 28 items, respectively. Also, CFA showed that these two solutions were reliable, and the three-factors solution showed higher fit indexes. Finally, the results showed that item-27 was the most central item in the UOC network structure.

Conclusion

The findings from the present study indicated that the Persian version of UOC has acceptable psychometric properties. So, this scale can be used for examining obsessive–compulsive tendencies in Iranian university students.
Genotype variation of ACE and ACE2 genes affects the severity of COVID-19 patients
Authors: Faustine Ingrid , Marteka Deli , Malik Amarila , Supriyanto Eko , Syafhan Nadia F.
Published: September 2023

Objective

Genetic polymorphisms in ACE and ACE2 genes are involved in the RAS regulation of blood pressure and their activity may confer susceptibility to hypertension. In addition, they may play a role in SARS-CoV-2 pathogenesis and the severity of COVID-19. This study aims to determine the effect of genetic variations in the ACE (rs4331) and ACE2 (rs2074192) genes with hypertension comorbidity on the severity of COVID-19 in the Indonesian population.

Result

186 patients were enrolled and assigned into the COVID-19 group (n = 95) and non-COVID-19 group (n = 91) in this cross-sectional study. GG genotype frequency was dominant in ACE gene, but there were no significant differences between the groups (p = 0.163). The two groups had a significant difference (p = 0.000) for the CC genotype frequency (0,37 vs. 0.01) in the ACE2 gene. The proportion of women with COVID-19 is higher (51%), but men with hypertension had more severe symptoms (44%). Men with hypertension comorbidity, GG (ACE), and TT (ACE2) genotypes tended to have moderate-to-severe symptoms (25%). Similarly, women with hypertension as well as GG and CT genotypes tended to have moderate-to-severe symptoms (21%). We conclude that hypertension and mutations in the ACE (rs4331) and ACE2 (rs2074192) genes affect the severity of COVID-19.
Mapping of infection prevention and control education and training in some countries of the World Health Organization’s Eastern Mediterranean Region: current situation and future needs
Authors: Moghnieh Rima , Al-Maani Amal Saif , Berro Jana , Ibrahim Nour , Attieh Rana , Abdallah Dania , Al-Ajmi Jameela , Hamdani Dhouha , Abdulrazzaq Najiba , Omar Abeer , Al-Khawaja Safa , Al-Abadla Rami , Al-Ratrout Salam , Gharaibeh Mohammad , Abdelrahim Zakaria , Azrag Hiba , Amiri Karima Mayar , Berry Atika , Hagali Bashar , Kadhim Jamal , Al-Shami Huda , Khan Mumtaz Ali , Husni Roula , Heweidy Iman , Zayed Bassim
Published: September 2023

Background

A strong understanding of infection prevention and control (IPC) procedures and comprehensive training among healthcare workers is essential for effective IPC programs. These elements play a crucial role in breaking the chain of nosocomial infections by preventing the transmission of resistant organisms to patients and staff members. This study mapped the components of IPC education and training across various member states of the World Health Organization (WHO) in the Eastern Mediterranean Region (EMR) at national, academic, and healthcare institutional levels.

Methods

A self-administered structured online questionnaire based on the WHO “Core Component 3” of IPC programs at the national and acute healthcare facility levels (IPC education and training) was given to national IPC focal persons in each of the WHO’s EMR countries between February and March 2023.

Results

From 14 of the 22 countries,15 IPC persons participated in the survey. Most countries have scattered nonhomogeneous IPC education programs in human health undergraduate majors without considering it a standalone module. Academic institutions are rarely involved, and elaborate and predefined undergraduate IPC education programs provided by universities are present in 21.4% of the countries. In 71.4% of these countries, postgraduate training targeting IPC professionals is provided by national IPC teams, primarily based on national IPC guidelines developed with the aid of the WHO. Generally, healthcare worker training relies heavily on healthcare facilities in 92.9% of the countries, rather than on a national training program. In 42.9% of the countries, practicing IPC physicians are not necessarily specialists of infectious disease or medical microbiologists and IPC nurses are not required to specialize in IPC. However, nonspecialized IPC professionals are expected to undergo training upon employment and before beginning practice. Nongovernmental organizations such as the WHO play a significant role in IPC education and in supporting national IPC authorities in establishing national IPC guidelines, as it is the case in 78.6% of these countries.

Conclusion

Clear disparities exist in IPC education and training across different countries in the WHO’s EMR. Establishing a regional scientific network specializing in IPC would help bridge the existing gaps and standardize this education within individual countries and across countries in the region. This region needs to establish IPC certification standards and standardized education curricula.
Spiritual leadership influence on employee creative service performance: a moderated mediation analysis
Authors: Chiu Yu-Wen , Amin Muhammad Waqas , Li Sheng Tun , Ali Muhammad
Published: September 2023

This paper expands the understanding of the relationship between spiritual leadership (SPL) and the creative service performance of employees. The research model, based on cognitive evaluation theory, examines the mediating role of employee autonomy and the moderating role of proactive personality in the relationship between SPL and employee creative service performance. Data was collected from 351 employees in China to test the moderated mediation model of this study. The empirical analysis reveals a positive association between SPL and employee autonomy, which in turn leads to increased employee creative service performance. Furthermore, the results show that SPL indirectly affects employee creative service performance via employee autonomy. Additionally, the findings suggest that a proactive personality can enhance the direct effect of SPL on employee autonomy and the indirect effect of SPL on employee creative service performance via employee autonomy. These results contribute significantly to the literature on SPL and creativity. The contributions and implications of this study are discussed in the subsequent section.
Extracellular vesicles derived from M1 macrophages enhance rat midpalatal suture expansion by promoting initial bone turnover and inflammation
Authors: Liu Yi , Zhong Yuan , Zheng Bowen , Liu Yi
Published: September 2023

Background

Midpalatal suture (MPS) expansion can be affected by many factors, and researchers have attempted to regulate the initial inflammatory stage of expansion to optimize clinical outcomes and their underlying mechanisms. This study aimed to investigate the potential effects and mechanisms of M1 macrophage small extracellular vesicles during rat MPS expansion.

Materials and methods

RAW264.7 cells were induced to M1 or M2 polarization and, small extracellular vesicles were isolated from the polarized macrophages. Male Sprague–Dawley rats (6–7 weeks) were administered 70 ± 5 g expansion force devices for 7 days. Rats with expanders without force served as controls. M1/M2 small extracellular vesicles were injected into the MPS region (50 µg/day) in the M1 and M2 small extracellular vesicle-assisted groups, while 0.9% saline was injected into the expansion-only group. Suture width, bone mass, and morphological changes in the region of interest (ROI) were examined.

Results

The M1 small extracellular vesicle-assisted group showed a significantly increased MPS suture width in vivo (P < 0.001), and less bone mass was observed in the ROI (P < 0.05). Histological examination showed that the M1 small extracellular vesicle-assisted group exhibited a wider palatal area and obvious fibrous tissue rearrangement. The expression of RANKL and the number of osteoclasts were increased (P < 0.01) in the bony edges, and the p65 protein expression was significantly higher (P < 0.001).

Conclusions

M1 macrophage-derived small extracellular vesicles have a positive effect in MPS expansion and increase p65 protein content and RANKL expression, thus promoting bone turnover. This study may contribute to the clinical application of small extracellular vesicles in the expansion of the palatal suture.
A nomogram based on biparametric magnetic resonance imaging for detection of clinically significant prostate cancer in biopsy-naïve patients
Authors: Hu Beibei , Zhang Huili , Zhang Yueyue , Jin Yongming
Published: September 2023

Purpose

This study aimed to develop and validate a model based on biparametric magnetic resonance imaging (bpMRI) for the detection of clinically significant prostate cancer (csPCa) in biopsy-naïve patients.

Method

This retrospective study included 324 patients who underwent bpMRI and MRI targeted fusion biopsy (MRGB) and/or systematic biopsy, of them 217 were randomly assigned to the training group and 107 were assigned to the validation group. We assessed the diagnostic performance of three bpMRI-based scorings in terms of sensitivity and specificity. Subsequently, 3 models (Model 1, Model 2, and Model 3) combining bpMRI scorings with clinical variables were constructed and compared with each other using the area under the receiver operating characteristic (ROC) curves (AUC). The statistical significance of differences among these models was evaluated using DeLong’s test.

Results

In the training group, 68 of 217 patients had pathologically proven csPCa. The sensitivity and specificity for Scoring 1 were 64.7% (95% CI 52.2%-75.9%) and 80.5% (95% CI 73.3%-86.6%); for Scoring 2 were 86.8% (95% CI 76.4%-93.8%) and 73.2% (95% CI 65.3%-80.1%); and for Scoring 3 were 61.8% (95% CI 49.2%-73.3%) and 80.5% (95% CI 73.3%-86.6%), respectively. Multivariable regression analysis revealed that scorings based on bpMRI, age, and prostate-specific antigen density (PSAD) were independent predictors of csPCa. The AUCs for the 3 models were 0.88 (95% CI 0.83–0.93), 0.90 (95% CI 0.85–0.94), and 0.88 (95% CI 0.83–0.93), respectively. Model 2 showed significantly higher performance than Model 1 (P = 0.03) and Model 3 (P < 0.01).

Conclusion

All three scorings had favorite diagnostic accuracy. While in conjunction with age and PSAD the prediction power was significantly improved, and the Model 2 that based on Scoring 2 yielded the highest performance.
Individualisation of radiation protection recommendations for patients treated with [177Lu]Lu-DOTA-TATE
Authors: Monserrat Fuertes Teresa , Santos Zorrozua Borja , Rodeño Ortiz de Zarate Emilia , Peinado Montes Miguel Ángel , Vigil Díaz Carmen , Mínguez Gabiña Pablo
Published: September 2023

Background

As for any other nuclear medicine treatment, patients treated with [177Lu]Lu-DOTA-TATE should be given some radiation protection recommendations after being discharged to limit the dose received by family members and public. The restriction periods will depend on the remaining activity at the time of discharge, the washout rate and patients’ personal conditions. The activity in patients’ whole-body follows a bi-exponential behaviour. At the time of discharge only the first part of the time-activity curve is known. However, the second phase of the bi-exponential curve should be known to individualize the time of restrictions. The main purpose of this prospective study was to establish a simple method for calculating the restriction periods based on measurements taken before discharge.

Methods

The whole-body time-activity curve was calculated for 20 patients from dose-rate measurements performed during the first week post-administration. An effective decay time$$T_{{{\text{eff}}}}^{6,24}$$Teff6,24was calculated from a mono-exponential fit performed with the 6 h and 24 h measurements and compared with the effective decay time$$T_{{{\text{eff}}}}^{24,48,168}$$Teff24,48,168obtained from the mono-exponential fit performed with the 24 h, 48 h and 168 h measurements. The differences between them were calculated and the 95th percentile of these differences was used as a correction factor for$$T_{{{\text{eff}}}}^{6,24}$$Teff6,24. A modified effective decay$$T_{{{\text{eff}},{\text{ mod}}}}^{6,24}$$Teff,mod6,24was obtained by adding the correction factor to$$T_{{{\text{eff}}}}^{6,24}$$Teff6,24and the restriction periods for each patient was calculated. The whole body activity washout between the first and the fourth treatment cycles of 16 patients was also compared.

Results

The comparison of the whole-body activity curves between the first and the fourth cycle of the treatment for 16 patients would indicate that the recommendations on radiation protection determined from the first cycle could reasonably be used for the remaining cycles in most patients. The values of$$T_{{{\text{eff}}}}^{6,24}$$Teff6,24and$$T_{{{\text{eff}}}}^{24,48,168}$$Teff24,48,168obtained for the 20 patients were significantly different. The 95th percentile of the differences between$$T_{{{\text{eff}}}}^{6,24}$$Teff6,24and$$T_{{{\text{eff}}}}^{24,48,168}$$Teff24,48,168was 46 h, which is thus the time to be added to$$T_{{{\text{eff}}}}^{6,24}$$Teff6,24so as to determine the restriction periods.

Conclusions

The proposed method makes it possible to calculate the restriction periods for patients treated with [177Lu]Lu-DOTA-TATE before they leave the hospital in a conservative and individualized way.
A possible manifestation of pancreas divisum–pancreatic pseudocyst in an infant with no apparent history of pancreatitis: a case report
Authors: Baba Tokuro , Yamazaki Toru , Sakai Masato , Matshuda Koichiro , Amaya Koji , Takatsuki Mitsuhisa , Okada Yasuhiro
Published: September 2023

Background

Pancreas divisum (PD), the most common pancreatic anomaly, is caused by the failure of pancreatic bud fusion in the embryo. Although most cases are asymptomatic, it can cause pancreatitis or epigastric pain. We report an unusual case of PD in an infant.

Case presentation

The patient was a 9-month-old girl with no pertinent medical history. She had suffered vomiting and diarrhea for 1 week before transfer to our hospital. Her general condition was poor, and abdominal distention was noted. Blood tests revealed microcytic anemia with normal chemical markers. The parents reported no episode of pancreatitis. Ultrasonography revealed massive ascites, which was later found to be bloody. Enhanced computed tomography and magnetic resonance imaging depicted a cystic lesion, approximately 2 cm in size, anterior to the second portion of the duodenum. During exploratory laparotomy, a pinhole was identified on the cyst wall, which was mistakenly identified as a duodenal perforation, and direct closure was performed. Postoperative levels of serum amylase and inflammation markers were elevated, and the amount of ascites increased, impairing oral feeding. The level of pancreatic enzymes in the ascites was high. Imaging studies were repeated, but the cause of pancreatic fistula was not identified. Conservative therapy, including administration of total parenteral nutrition, antibiotics, and octreotide, was initiated, but the situation did not improve. Three months after admission, endoscopic retrograde cholangiopancreatography showed a thick dorsal pancreatic duct communicating with a hypoplastic ventral duct, which was indicative of PD. Contrast medium leaking from the dorsal duct near the minor ampulla revealed the presence of a pseudocyst. Stenting via the minor papilla was impossible because the minor papilla was obstructed. Instead, a stent was inserted into the ventral pancreatic duct. Endoscopic transgastric drainage of the cyst was effective, and the patient was discharged, 7 months after admission. The patient is healthy, but the gastric stent needs to be replaced regularly.

Conclusion

In children, PD can manifest with pancreatic pseudocyst that causes pancreatic ascites, even in the absence of pancreatitis. This may be a previously unrecognized manifestation of PD in children, and clinicians need to be aware of it.
Determinants of Malnutrition and its associated factors among pregnant and lactating women under armed conflict areas in North Gondar Zone, Northwest Ethiopia: a community-based study
Authors: Belew Aysheshim Kassahun , Awoke Tadesse , Gelaye Kassahun Alemu , Atnafu Asmamaw , Guadu Tadesse , Azale Telake , Yitayal Mezigebu , Assefa Yohannes Awoke , Getachew Rediet , Amare Tadele , Yitayih Sewbesew , Shitu Kegnie , Demilew Demeke , Dellie Endalkachew , Aschalew Andualem Yalew , Fanta Biruk , Worku Netsanet , Yalew Ermias Solomon , Abich Yohannes , Azeze Getachew , Worku Chanyalew , Kibret Alemu Kassaw , G/Medhin Tsegaye , Hunegnaw Melkamu Tamir , Salelew Endalamaw , Nenko Goshu , Fekadu Hailab , Molla Ayenew
Published: September 2023

Introduction

Maternal malnutrition remains a major public health problem, particularly in low and middle-income countries and war-affected areas like Ethiopia. Malnourished pregnant and lactating women with low nutrient stores have babies with poor mental and physical development, increasing the risk of poor birth outcomes. Despite the fact that the majority of Ethiopian mothers are malnourished, there is little evidence in war-affected areas. Therefore, the objective of this study was to assess the prevalence of undernutrition and associated factors among pregnant and lactating mothers in the war affected area of North Gondar Zone, northwest Ethiopia.

Methods

A community-based cross-sectional study was conducted from April 10 to May 25, 2022. A multistage random sampling technique was used to select 1560 pregnant and lactating mothers. MUAC was to ascertain the outcome variable. Data was entered and analyzed by using EPI INFO version 3.5.3 and SPSS version 24, respectively. A multivariable logistic regression analysis was employed to identify the factors associated with acute malnutrition. An adjusted odds ratio (AOR) with a 95% confidence interval was used to show the strength of the association, while a P-value of 0.05 was used to declare the significance of the association.

Results

The prevalence of acute malnutrition among pregnant and lactating women was 34.3% at the 95% CI (31.9–36.8). The age of the mothers (AOR = 0.73; 95% CI: 0.54, 0.99), family size 6–8 (AOR = 1.21; 95% CI: 1.03, 1.82), and greater than or equal to 9 family sizes (AOR = 0.44; 95% CI: 0.19, 0.97), were significantly associated with acute malnutrition.

Conclusions

In the current study, the prevalence of acute malnutrition among pregnant and lactating mothers is high in the study area. Mother’s age and family size were factors associated with acute malnutrition in war-affected areas. As a result, mothers with large families will require special assistance to reduce the impact of malnutrition.
Ability of diagnostic injection to predict surgical outcomes in patients with chronic low back pain and lumbar radiculopathy
Authors: Mirenge Goertz Dunia , Bary Mohamed Elsayed Abdel , Elwany Amr Hamdy , Moussa Wael Mohamed Mohamed
Published: September 2023

Background

Arising from different anatomical structures of the spine, chronic low back pain is one of the leading causes of disability, and its management is still controversial. Thus, appropriate and effective management of chronic low back pain requires a precise diagnostic tool in order to target pain generators. Therefore, the role of diagnostic injection in predicting the outcome of surgical treatment of chronic low back pain and lower limb radicular pain need to be evaluated in order to guide the surgeon, especially in case of unclear pathoanatomical features. Thus, the aim of this study was to assess the predictive value of lumbar spine diagnostic injections in surgical outcome in patients with chronic low back pain and lumbar radiculopathy.

Patients and methods

This study included 30 patients complaining of chronic low back pain and/or lumbar radiculopathy who underwent lumbar spine surgery following positive diagnostic injections. The pre- and postoperative assessments consisted of a general neurological examination, evaluation of the Oswestry disability index, and a visual analog scale.

Results

This prospective non-controlled study was conducted on 30 patients complaining of chronic low back pain and/or lumbar radiculopathy. The mean age was 42.60 ± 8.27 years with a range of 24.0–62.0 years. The visual analog scale decreased significantly from preoperative mean value of 8.26 ± 0.79 to postoperative mean value of 1.97 ± 0.92; with almost two-thirds of the patients experienced more than 75% pain reduction. The Oswestry disability index decreased significantly from preoperative mean value of 34.13 ± 4.88 to 11.47 ± 3.36 after surgery in the whole sample. The post-selective nerve root block visual analog scale was significantly correlated to the postoperative visual analog scale, while the postoperative Oswestry disability index was not significantly associated with the post-selective nerve root block visual analog scale.

Conclusion

The use of lumbar selective nerve root block and lumbar provocative discography for patients with chronic low back pain and radiculopathy and equivocal radiological findings can improve surgical outcomes regarding pain intensity and spine functional outcomes. Diagnostic selective nerve root block can predict the postoperative pain relief.
Differential diagnoses of cavitary lung lesions on computed tomography: a pictorial essay
Authors: Naggar Amine , Laasri Khadija , Berrada Kenza , Kabila Badr , El Aoufir Omar , Laamrani Fatima Zahra , Jroundi Laila
Published: September 2023

Background

Cavitary lung lesions are frequent findings on imaging, with the most common sources being malignancies and infections. They have multiple etiologies and differential diagnoses, which can have overlapping imaging characteristics, posing a diagnostic difficulty.

Main body of the abstract

This article is an educational pictorial essay highlighting the pitfalls and differential diagnoses of lung cavities, and focusing on the typical imaging patterns, the clinical and biological contexts of each etiology, illustrated by images that were extracted from the images archiving system of our radiology department.

Short conclusion

The radiologist should be aware of all etiologies of cavitary lung lesions, including the less frequent ones, and be familiar with their imaging patterns and characteristics, which aids in establishing the diagnosis or, at the very least, narrowing down the evoked diagnoses.
Hepatic function and structure in feral pigeons (Columba livia domestica) exposed to zinc oxide nanoparticles
Authors: Arabi Mehran , Naseri Hamid-Reza
Published: September 2023

Background

Broad applications of nanoparticles have invoked the concerns about their impacts on living organisms. This study aimed to evaluate the possible changes that could take place in the liver of feral pigeons (Columba livia domestica) after oral ingestion of zinc oxide nanoparticles (nano-ZnO).

Methods

Pigeons were acclimatized to the laboratory conditions with a photoperiod of 12:12 h at 20 ± 2 ˚C for 14 days and maintained on seed mixture and clean tap water ad libitum. The birds were randomly assigned to five groups of 10, including one control group and four experimental groups orally receiving 0, 30, 50, and 75 mg/kg b.w. of nano-ZnO through oral gavage for 7 and 14 consecutive days.

Results

The oxidative stress (OS) biomarkers, namely lipid peroxidation content and catalase activity in the liver samples, and the level of hepatic necrosis markers (ALT, AST, and ALP) in the blood sera were increased in a concentration-dependent manner. Meanwhile, the total antioxidant capacity of liver samples measured by FRAP test was reduced. Histopathological changes revealed inflammatory cell infiltration, swelling area, vacuolization, and expansion of interstitial spaces in liver samples exposed to 75 mg/kg nano-ZnO.

Conclusions

Nano-ZnO induced obvious hepatotoxicity in the liver of pigeons, where the OS pathway may be the potential mechanism underlying this toxicity.