Knowledge Gaps Research Articles

Readiness to manage Ebola Virus Disease among emergency healthcare workers in Uganda: a nationwide multicenter survey

BackgroundEmerging infectious diseases like the Ebola Virus Disease (EVD) pose significant global public health threats. Uganda has experienced multiple EVD outbreaks, the latest occurring in 2022. Frontline healthcare workers (HCWs) are at increased risk, yet there is insufficient evidence of existing knowledge of EVD of these HCWs. We aimed to assess the readiness of Uganda’s emergency HCWs to manage EVD and identify their training needs to inform targeted capacity-building interventions for future outbreaks.MethodsThis multicentre nationwide cross-sectional study was conducted from July to September 2023 among HCWs providing emergency care in 14 secondary and tertiary hospitals across Uganda. Participants were consecutively recruited using the probability-proportional-to-size sampling technique, and data was collected using a self-reported questionnaire. Factors associated with EVD knowledge were identified through a mixed-effect linear model.ResultsData from 691 eligible HCWs with a median age of 32 (IQR: 28–38) was analyzed (response rate: 92%). Only one-third (34.4%, n = 238) had received EVD training in the past year. The median EVD knowledge score was 77.4% (IQR: 71.2 − 83.4%). EVD knowledge was associated with longer professional experience in years (β: 0.21, 95% CI: 0.03 to 0.39, p = 0.024) and higher level of education: diploma (β: 3.37, 95% CI: 1.49 to 5.25, p < 0.001), undergraduate degree (β: 6.45, 95% CI: 4.11 to 8.79) and postgraduate degree (β: 7.13, 95% CI: 4.01 to 10.25, p < 0.001). Being a doctor (β: 2.55, 95% CI: 0.35 to 4.74, p = 0.023), providing care in the obstetrics/gynecology department (β: −1.90, 95% CI: −3.47 to − 0.32, p = 0.018), previous EVD training (β: 2.27, 95% CI: 0.96 to 3.59, p = 0.001) and accessing EVD information through social media (β: 2.52, 95% CI: 1.17 to 3.88, p < 0.001) were also significantly associated with EVD knowledge. HCWs were mostly interested in training on management (92.9%), infection prevention and control (87.1%), and clinical presentation (84.1%), and preferred physical (51.5%) and hybrid (38.2%) training modes.ConclusionOur study shows that the readiness of HCWs in Uganda to respond to EVD outbreaks varies by individual factors and information sources. We recommend targeted training and suggest future research on educational innovations and social media’s potential to fill knowledge gaps.

Leveraging AI-Driven financial literacy and tax compliance solutions to foster economic growth in underserved communities and small businesses

Underserved communities and small businesses face significant challenges in financial literacy and tax compliance, both of which are critical to economic stability and growth. Limited access to financial education and the complexities of tax systems create barriers that hinder these groups from fully participating in the formal economy. This review explores the potential of leveraging artificial intelligence (AI) to address these challenges by providing innovative solutions that enhance financial literacy and simplify tax compliance. AI-driven platforms can offer personalized financial education, using machine learning algorithms to identify knowledge gaps and provide tailored resources to users. Through gamification and interactive tools, AI can make financial education more engaging and accessible, especially for individuals with limited formal education. Furthermore, AI-powered virtual assistants and chatbots can guide users through essential financial decisions, improving budgeting, credit management, and savings habits. In the realm of tax compliance, AI solutions can automate bookkeeping, tax filings, and other administrative tasks, reducing human error and lowering the compliance burden on small businesses. Predictive analytics can assist in tax planning by forecasting liabilities and helping businesses make informed decisions that minimize tax penalties and maximize cash flow. These advancements empower small businesses and entrepreneurs by enabling better financial management, fostering trust in the financial system, and facilitating access to funding opportunities. By integrating AI-driven financial literacy and tax compliance solutions, underserved communities and small businesses can unlock their economic potential, contributing to broader economic growth and financial inclusion. However, challenges such as data privacy, digital access, and regulatory concerns must be addressed to ensure equitable implementation of these technologies. The review concludes that with careful consideration of these factors, AI can be a powerful catalyst for sustainable economic development. Keywords: Leveraging AI-Driven, Financial Literacy Tax Compliance Small Businesses

Adult day programs and their effects on individuals with dementia and their caregivers (ADAPT-DemCare): a realist synthesis to develop program theories on the how and why

BackgroundAdult day programs aim to facilitate aging in place by supporting the health and well-being of persons with dementia and providing respite to their caregivers. However, studies on the effects of day programs are inconclusive, and we especially lack insights into the context conditions and mechanisms of day programs that may produce different outcomes for different groups of persons with dementia and their caregivers. Our objective was to conduct a realist review, synthesizing research on day programs to develop program theories explaining how and why day programs do or do not produce positive or negative outcomes for different groups of persons with dementia, and caregivers.MethodsWe identified 14 literature reviews (including 329 references published between 1975 and 2021) on adult day programs. From this initial pool of studies, we will include those that focused on day program attendees with dementia or meaningful cognitive impairment, and/or their caregivers, and that report how day program contexts (C) and mechanisms (M) bring about outcomes (O) for attendees and caregivers. We will extract CMO statements (i.e., narratives that explain how and why day programs do or do not bring about certain outcomes for whom and under what circumstances). Using additional focused searches, citation mapping, citation tracking, and discussions with our researcher and expert team members, we will identify additional references. CMO statements will be synthesized, transformed into hypotheses, and linked and visualized to form program theories. Using focus groups and the James Lind Alliance Priority Setting Partnership method, we will discuss and prioritize our CMO statements and refine our program theories with 32 experts (older adults, caregivers, Alzheimer societies, caregiver organizations, day program staff and managers, and health system and policy decision makers). DiscussionBy identifying essential elements and processes of day programs and related knowledge gaps, this study will generate much-needed knowledge to leverage the full potential of day programs so they can provide appropriate care, preventing premature institutionalization, and unnecessary acute and primary care use. This will ultimately improve the quality of life of persons with dementia and their caregivers, alleviate caregiver burden, and reduce social costs. Systematic review registrationPROSPERO CRD42024504030

Factors influencing the use of e-library resources by postgraduate engineering students at Kyambogo University in Uganda

The aim of this study was to investigate the factors influencing the use of e-library resources among postgraduate engineering students at Kyambogo University in Uganda to make suggestions on how to improve access to and use of e-library resources. The study adopted a survey research design to collect data from postgraduate engineering students. Following a census sampling strategy, data was obtained from 58 out of 80 registered postgraduate engineering students using online self-administered questionnaires. The findings revealed that the use of e-library resources by postgraduate engineering students was influenced by ease of use, convenience, level of awareness, and information search skills. However, access restrictions and high internet costs negatively affected e-library resources usage. It is the conclusion of the study that the use of e-library resources was largely influenced by personal factors. This study has implications on e-library resources collection development, policy development, and service delivery in academic libraries. The study bridges the knowledge gap in the use of e-library resources among postgraduate engineering students.

The dysfunction of complement and coagulation in diseases: the implications for the therapeutic interventions.

The complement system, comprising over 30 proteins, is integral to the immune system, and the coagulation system is critical for vascular homeostasis. The activation of the complement and coagulation systems involves an organized proteolytic cascade, and the overactivation of these systems is a central pathogenic mechanism in several diseases. This review describes the role of complement and coagulation system activation in critical illness, particularly sepsis. The complexities of sepsis reveal significant knowledge gaps that can be compared to a profound abyss, highlighting the urgent need for further investigation and exploration. It is well recognized that the inflammatory network, coagulation, and complement systems are integral mechanisms through which multiple factors contribute to increased susceptibility to infection and may result in a disordered immune response during septic events in patients. Given the overlapping pathogenic mechanisms in sepsis, immunomodulatory therapies currently under development may be particularly beneficial for patients with sepsis who have concurrent infections. Herein, we present recent findings regarding the molecular relationships between the coagulation and complement pathways in the advancement of sepsis, and propose potential intervention targets related to the crosstalk between coagulation and complement, aiming to provide more valuable treatment of sepsis.

The Digital Revolution in Education: The Role of AI from the Perspective of Future Teachers

We are currently witnessing rapid technological advancement and modernisation of society, with digital technology, particularly artificial intelligence (AI), increasingly asserting its dominance. This study focuses on understanding the attitudes and expectations of future teachers towards AI, which has an impact on all areas of society, especially on the education and preparation of future teachers. Through a questionnaire survey, the study seeks to gain a more detailed insight into how future educators perceive AI and their attitudes towards it. The questionnaire, which was specifically designed for this research, focuses on different aspects of perceptions of AI in education. Respondents from both primary and secondary school teacher education programmes expressed their views on the use of AI in the pedagogical process, its impact on teacher-student interaction and indicated possible implications for the future of education. The main objectives of the research were to determine the views of prospective teachers on the use of AI in teaching, to identify positive, negative or neutral attitudes towards the integration of AI into the educational process, to identify the future role of AI in education, to determine how prospective teachers envision the use of AI in the pedagogical environment in the long term, to identify areas where teaching with AI could be most effectively integrated, and to identify areas where AI could be most appropriately used to improve educational outcomes and processes. The data presented through this paper is part of the "Perceptions of AI by current and future teachers" project. The results of this study could provide valuable information for educational institutions, policy makers of educational strategies and frameworks, and AI developers to better understand the needs and expectations of future teachers in the context of the increasing digitalisation of education. Our intention is to fill the knowledge gap on the perception of AI in educational contexts and thus provide important information for the future development of pedagogical strategies and technologies in education.

Candida guilliermondii fungemia: a 12-year retrospective review of antimicrobial susceptibility patterns at a reference laboratory and tertiary care center.

Our study addresses a significant knowledge gap in the clinical management of this non-Candida albicans species. Our retrospective review includes comprehensive AST data for 112 Candida guilliermondii isolates, which is the largest number of isolates reported from the United States to date. Susceptibility data are supplemented by clinical outcomes, where isolates were identified for patients treated at Mayo Clinic. Key findings from our study include the observation that a notable proportion of C. guilliermondii isolates exhibit non-wild-type profiles for various triazoles. Importantly, all isolates remained susceptible to echinocandins, suggesting their efficacy as first-line therapy in the absence of timely susceptibility results. Furthermore, our study highlights the high mortality associated with C. guilliermondii fungemia in immunocompromised patients, emphasizing the urgent need for optimized treatment strategies.

Cryptosporidium lysyl-tRNA synthetase inhibitors define the interplay between solubility and permeability required to achieve efficacy.

Cryptosporidiosis is a diarrheal disease caused by infection with Cryptosporidium spp. parasites and is a leading cause of death in malnourished children worldwide. The only approved treatment, nitazoxanide, has limited efficacy in this at-risk patient population. Additional safe therapeutics are urgently required to tackle this unmet medical need. However, the development of anti-cryptosporidial drugs is hindered by a lack of understanding of the optimal compound properties required to treat this gastrointestinal infection. To address this knowledge gap, a diverse set of potent lysyl-tRNA synthetase inhibitors was profiled to identify optimal physicochemical and pharmacokinetic properties required for efficacy in a chronic mouse model of infection. The results from this comprehensive study illustrated the importance of balancing solubility and permeability to achieve efficacy in vivo. Our results establish in vitro criteria for solubility and permeability that are predictive of compound efficacy in vivo to guide the optimization of anti-cryptosporidial drugs. Two compounds from chemically distinct series (DDD489 and DDD508) were identified as demonstrating superior efficacy and prioritized for further evaluation. Both compounds achieved marked parasite reduction in immunocompromised mouse models and a disease-relevant calf model of infection. On the basis of these promising data, these compounds have been selected for progression to preclinical safety studies, expanding the portfolio of potential treatments for this neglected infectious disease.

Effects of the co-exposure of microplastic/nanoplastic and heavy metal on plants: Using CiteSpace, meta-analysis, and machine learning

Micro/nanoplastics (MNPs) and heavy metals (HMs) coexist worldwide. Existing studies have reported different or even contradictory toxic effects of co-exposure to MNPs and HMs on plants, which may be related to various influencing factors. In this study, existing publications were searched and analyzed using CiteSpace, meta-analysis, and machine learning. CiteSpace analysis showed that this research field was still in the nascent stage, and hotspots in this field included accumulation, cadmium (Cd), growth, and combined toxicity. Meta-analysis revealed the differential association of seven influencing factors (MNP size, pollutant treatment duration, cultivation media, plant species, MNP type, HM concentration, and MNP concentration) and 8 physiological parameters receiving the most attention. Co-exposure of the two contaminants had stronger toxic effects than HM treatment alone, and phytotoxicity was generally enhanced with increasing concentrations and longer exposure durations, especially when using nanoparticles, hydroponic medium, dicotyledons producing stronger toxic effects than microplastics, soil-based medium, and monocotyledons. Dry and fresh weight analysis showed that co-exposure to MNPs and Cd resulted in significant phytotoxicity in all classifications. Concerning the MNP types, polyolefins partially attenuated plant toxicity, but both modified polystyrene (PS) and biodegradable polymers exacerbated joint phytotoxicity. Finally, machine learning was used to fit and predict plant HM concentrations, showing five classifications with an accuracy over 80 %, implying that the polynomial regression model could be used to predict HM content in plants under complex pollution conditions. Overall, this study identifies current knowledge gaps and provides guidance for future research.

The Hybridisation, Resilience, and Loss of Local Knowledge and Natural Resource Management in Zambia

AbstractThe contribution of Indigenous and local knowledge (ILK) to natural resource management has recently gained increasing prominence in academia, policymaking, and civil society. However, persistent knowledge gaps concerning the contribution of ILK to sustainable landscape management remain. We investigate existing local knowledge and practices of the Tonga of Kalomo District, Zambia, and their contribution to sustainable landscape management by combining walking interviews with photovoice. Especially Tonga women and youth are important knowledge holders for land management, agricultural practices, and tree conservation. We found that local knowledge is often ‘hybridised’ with ‘external knowledge’ when local knowledge alone is deemed insufficient. In some cases, introduced ‘external knowledges’ are simply reconstituted long-standing local practices. Nevertheless, local communities often perceive external knowledge holders as “knowing better.” Finally, we show how local knowledge and associated practices have been simultaneously eroded and lost and describe those that have remained resilient to provide insights into the complexity of hybridisation processes where different knowledge systems interact.

Root exudation patterns of contrasting rice (Oryza sativa L.) lines in response to P limitation

Main conclusionRice exudation patterns changed in response to P deficiency. Higher exudation rates were associated with lower biomass production. Total carboxylate exudation rates mostly decreased under P-limiting conditions.Within the rhizosphere, root exudates are believed to play an important role in plant phosphorus (P) acquisition. This could be particularly beneficial in upland rice production where P is often limited. However, knowledge gaps remain on how P deficiency shapes quality and quantity of root exudation in upland rice genotypes. We therefore investigated growth, plant P uptake, and root exudation patterns of two rice genotypes differing in P efficiency in semi-hydroponics at two P levels (low P = 1 µM, adequate P = 100 µM). Root exudates were collected hydroponically 28 and 40 days after germination to analyze total carbon (C), carbohydrates, amino acids, phenolic compounds spectrophotometrically and carboxylates using a targeted LC–MS approach. Despite their reported role in P solubilization, we observed that carboxylate exudation rates per unit root surface area were not increased under P deficiency. In contrast, exudation rates of total C, carbohydrates, amino acids and phenolics were mostly enhanced in response to low P supply. Overall, higher exudation rates were associated with lower biomass production in the P-inefficient genotype Nerica4, whereas the larger root system with lower C investment (per unit root surface area) in root exudates of the P-efficient DJ123 allowed for better plant growth under P deficiency. Our results reveal new insights into genotype-specific resource allocation in rice under P-limiting conditions that warrant follow-up research including more genotypes.

BiP Proteins from Symbiodiniaceae: A “Shocking” Story

More than four decades ago, the discovery of a companion protein of immunoglobulins in myeloma cells and soon after, of their ability to associate with heavy chains, made the term immunoglobulin binding protein (BiP) emerge, prompting a tremendous amount of effort to understand their versatile cellular functions. BiPs belong to the heat shock protein (Hsp) 70 family and are crucial for protein folding and cellular stress responses. While extensively studied in model organisms such as Chlamydomonas, their roles in dinoflagellates, especially in photosynthetic Symbiodiniaceae, remain largely underexplored. Given the importance of Symbiodiniaceae-cnidarian symbiosis, critical for the sustaining of coral reef ecosystems, understanding the contribution of Hsps to stress resilience is essential; however, most studies have focused on Hsps in general but none on BiPs. Moreover, despite the critical role of light in the physiology of these organisms, research on light effects on BiPs from Symbiodiniaceae has also been limited. This review synthesizes the current knowledge from the literature and sequence data, which reveals a high degree of BiP conservation at the gene, protein, and structural levels in Symbiodiniaceae and other dinoflagellates. Additionally, we show the existence of a potential link between circadian clocks and BiP regulation, which would add another level of regulatory complexity. The evolutionary relationship among dinoflagellates overall suggests conserved functions and regulatory mechanisms, albeit expecting confirmation by experimental validation. Finally, our analysis also highlights the significant knowledge gap and underscores the need for further studies focusing on gene and protein regulation, promoter architecture, and structural conservation of Symbiodiniaceae and dinoglagellate BiPs in general. These will deepen our understanding of the role of BiPs in the Symbiodiniaceae-cnidarian interactions and dinoflagellate physiology.

Toward Equity in Global Access to SoHO-based Therapies: Recommendations for Action.

Therapies derived from substances of human origin (SoHOs) such as organs, cells, and tissues provide life-saving or life-changing treatment for millions of people worldwide each year. However, many people lack timely access to SoHO-based therapies because of insufficient supplies of these exceptional health resources and/or broader barriers in access to healthcare. Despite well-established governmental commitments to promote health equity in general and equity of access to SoHOs in particular, information about inequities in access to most SoHO-based therapies is scarce. Furthermore, the issue of equitable allocation of SoHO-based therapies has received little attention from policymakers and ethicists, except in the context of organ allocation for transplantation. Consequently, the extent and nature of potential inequities within and between countries are largely unknown, and few sources of guidance are available to support progress toward equity in global access to SoHO-based therapies. We present here the findings of an international ethics working group convened in preparation for the 2023 Global Summit on Convergence in Transplantation, organized in Santander, Spain. The group sought to assess potential gaps in knowledge about inequities involving SoHO-based therapies, to elucidate systemic factors that may influence access to these therapies, and to consider how policies and frameworks governing access to and allocation of SoHO-based therapies may promote equity when it is necessary to define boundaries in access because of insufficiency of supply. In discussing these challenges, we also outline several recommendations for action by governments and health authorities.

Metabolic and Epigenetic Mechanisms in Hepatoblastoma: Insights into Tumor Biology and Therapeutic Targets

Background: Hepatoblastoma, the most common pediatric liver malignancy, is characterized by significant molecular heterogeneity and poor prognosis in advanced stages. Recent studies highlight the importance of metabolic reprogramming and epigenetic dysregulation in hepatoblastoma pathogenesis. This review aims to explore the metabolic alterations and epigenetic mechanisms involved in hepatoblastoma and how these processes contribute to tumor progression and survival. Methods: Relevant literature on metabolic reprogramming, including enhanced glycolysis, mitochondrial dysfunction, and shifts in lipid and amino acid metabolism, as well as epigenetic mechanisms like DNA methylation, histone modifications, and non-coding RNAs, was reviewed. The interplay between these pathways and their potential as therapeutic targets were examined. Results: Hepatoblastoma exhibits metabolic shifts that support tumor growth and survival, alongside epigenetic changes that regulate gene expression and promote tumor progression. These pathways are interconnected, with metabolic changes influencing the epigenetic landscape and vice versa. Conclusions: The dynamic interplay between metabolism and epigenetics in hepatoblastoma offers promising avenues for therapeutic intervention. Future research should focus on integrating metabolic and epigenetic therapies to improve patient outcomes, addressing current gaps in knowledge to develop more effective treatments.

Development of Leadership Skills in Medical Education: Protocol for a Scoping Review.

Leadership is recognized as an essential competency in health care and science, being central for professionals to face health challenges. Few physicians feel prepared to serve as leaders in the health care environment, and few receive training in the leadership skills needed to be successful. Teaching leadership skills together with extensive, longitudinal, clinical education in an authentic and nurturing environment can effectively develop students for leadership in medicine. Studies on the subject still do not show the best way to implement it in medical education, and an updated review is necessary. The aim of this study is to identify the types of available evidence on the teaching of leadership skills in undergraduate courses in the health area, analyze them, determine knowledge gaps, and disseminate the research results. This is a scoping review that will consider studies on leadership skills in medical and health undergraduate courses. Primary studies published in English, Spanish, and Portuguese since 2019 will be considered. The search will be performed in 8 databases, and reference lists will be searched for additional studies. Duplicates will be removed, and 2 independent reviewers will examine the titles, abstracts, and full texts of the selected studies. Data extraction will be performed using a tool developed by the researchers. The scoping review is currently in progress. The preliminary database search has been completed, yielding a total of 1213 articles across multiple databases. The next stages, including deduplication, title and abstract screening, and full-text review, are scheduled to be completed by December 2024. Data extraction and analysis are expected to be finalized by March 2025, with the final report anticipated to be ready for submission by June 2025. This scoping review on leadership in the medical curriculum can significantly contribute to the literature by organizing and synthesizing the available evidence on teaching leadership skills in undergraduate courses in the health area. Furthermore, by analyzing evidence and identifying knowledge gaps, the study can provide valuable insights to develop more efficient and comprehensive medical education programs, thus preparing students to take on leadership roles in the complex environment of health care. Open Science Framework YEXKB; https://osf.io/yexkb. PRR1-10.2196/62810.

Changing Landscape of Randomized Clinical Trials in Stroke: Explaining Contemporary Trial Designs and Methods.

Evidence generated from randomized clinical trials (RCTs) plays an indispensable role in advancing clinical stroke care. Although the number of stroke-related RCTs published every year has grown exponentially over the past 25 years, the execution and completion of RCTs, particularly those conducted in a hyperacute setting, have grown more complicated and challenging over the years. In addition to the practical challenges associated with conducting a clinical trial, like obtaining human subjects approval, identifying clinical sites, training trial personnel, and enrolling the target number of patients within the available funding and timeline, the complexity of contemporary RCT designs and analyses has become much more exacting. It is no longer sufficient to have a decent understanding of the 2-arm, placebo-controlled RCT, combined with a rudimentary grasp of the P value; things are now much more complicated. Innovations in trial design and analysis, including adaptive, Bayesian, platform, and noninferiority designs, have occurred to address the problems of poor trial efficiency. However, these advances require the end user to have a much greater level of understanding regarding the rationale, conduct, analysis, and interpretation of each design. While these newer designs seek greater efficiency, there are inevitably tradeoffs that need to be understood. In this month's edition of Stroke, we introduce a new series designed to help fill in these knowledge gaps. Over the next few months, 4 papers will be published that address major design innovations (adaptive, Bayesian, platform, and noninferiority) with the aim of illustrating how these approaches can make trials more efficient (where efficiency is defined as getting to the right answer, sooner, with a potentially lower sample size). In addition to introducing this series, this current article also reviews traditional hypothesis testing and the common misinterpretations of the P value; fortunately, new philosophical schools of inference are beginning to vanquish the overreliance on the P value. We are excited about the opportunity to educate the Stroke readership about these new trial designs and the profound implications that they bring.

Impression Management and Employee Commitment in Akwa-Ibom Tertiary Institutions

General background: Employee commitment is crucial for organizational success, and impression management techniques may significantly influence this commitment. Specific background: Previous studies have examined the effects of impression management in organizational contexts, yet the specific dynamics in Nigerian tertiary institutions remain underexplored. Knowledge gap: The influence of exemplification, ingratiation, and self-promotion on different dimensions of employee commitment (affective, continuance, and normative) in Nigerian institutions has not been fully examined. Aims: This study aims to determine how these dimensions of impression management influence employee commitment and the moderating role of organizational culture. Results: Findings reveal a positive and significant relationship between impression management and employee commitment. Specifically, exemplification enhances affective commitment, ingratiation promotes continuance commitment, and self-promotion influences normative commitment. Organizational culture was found to strongly moderate these relationships. Novelty: This study provides new insights into the contextual effects of impression management on employee commitment in Nigerian tertiary institutions. Implications: The findings suggest that management should employ strategic impression management techniques to enhance employee commitment, fostering improved organizational performance and reduced turnover. Highlights: Impression management positively influences employee commitment in tertiary institutions. Exemplification enhances affective commitment, ingratiation promotes continuance commitment. Organizational culture strongly moderates the relationship between impression management and employee commitment. Keywords: Impression Management, Employment Commitment, Exemplification, Ingratiation, Self-Promotion

A revised marine fossil record of the Mediterranean before and after the Messinian salinity crisis

Abstract. The Messinian salinity crisis and its precursor events have been the greatest environmental perturbation of the Mediterranean Sea to date, offering an opportunity to study the response of marine ecosystems to extreme hydrological change and a large-scale biological invasion. The restriction of the marine connection between the Mediterranean and the Atlantic Ocean resulted in stratification of the water column and high-amplitude variations in seawater temperature and salinity already from the early Messinian. Here, we present a unified and revised marine fossil record of the Mediterranean (https://doi.org/10.5281/zenodo.13358435, Agiadi et al., 2024) that covers the Tortonian stage, the pre-evaporitic Messinian stage, and the Zanclean stage and encompasses 23 032 occurrences of calcareous nannoplankton, dinoflagellates, foraminifera, corals, ostracods, bryozoans, echinoids, mollusks, fishes, and marine mammals. This record adheres to the FAIR principles, is updated in terms of taxonomy, and follows the currently accepted stratigraphic framework. Based on this record, knowledge gaps are identified, which are due to spatiotemporal inconsistencies in sampling effort and the distribution of sedimentary facies, as well as the inherent differences in the preservation potential between the groups. Additionally, sampling bias in old records may have distorted the record in favor of larger, more impressive taxa within groups. This record is now ready to be used to answer both geological and biological questions about the Mediterranean Sea and beyond and is amendable when new fossil data are brought to light.

Molecular misconceptions: A cross-national study on university students’ understanding of the mole concept

This study investigates university students’ understanding of the mole concept and its implications for chemistry education, highlighting the critical role of mathematical education. A questionnaire was administered to 303 students from universities in Panama, Mexico, Cuba, Chile, and Spain. The results reveal that only 29.7% of participants recognize the mole as a fundamental unit, while 20.8% confuse the amount of substance with a non-existent “Chemical System.” Only 18.5% correctly identified the substance quantity symbol as “n” and 32.7% were aware that Wilhelm Ostwald introduced the term mole, indicating deficiencies in historical knowledge. The significance of these findings highlights major misconceptions and gaps in both conceptual understanding and historical knowledge, underscoring the urgent need for revised teaching strategies. Addressing these issues is crucial for bridging the gap between theoretical knowledge and practical application, thereby enhancing instructional methods and optimizing chemistry education to improve students’ comprehension of fundamental concepts.

Prevalence of Hepatitis E Virus Infection among Blood Donors in a Tertiary Healthcare Facility in Osun State, Nigeria

Hepatitis E virus (HEV) is currently the most common cause of viral hepatitis in developing countries. While prospective blood donors are routinely screened for HIV, Hepatitis B and C globally in endemic areas, HEV is not included in the protocol, despite the increase in global prevalence of HEV. Till date, only a handful of studies exist on the prevalence of HEV in Nigeria. The aim of this study was to fill this knowledge gap by determining the prevalence of HEV among blood donors at the LAUTECH Teaching Hospital, Osogbo, Osun State, Nigeria. A total of 102 consenting individuals were enrolled into the study between ages 20 and 55. A volume of 5ml blood sample was collected, and the serum harvested, stored at 20°C until ready for analysis. A double antibody sandwich HEV ELISA was performed to analyze the sera in duplicate for HEV antigen, using an ELISA Kit. Of the 102 samples analyzed, 15 (14.7%) tested positive for HEV antigen, confirming the presence of HEV infection among blood donors in the study population. There was significant association between HEV seropositivity and contact with animals (P=0.010) and alcohol consumption (P=0.000), which means there was a higher chance of donors who consumed alcohol or have had contact with animals to get infected with HEV. However, age, educational status, occupation and gender did not show any statistically significant association with HEV infection. The prevalence of HEV seropositivity was high (14.7%) and a cause for concern as HEV continues to be a major public health issue especially in developing countries.