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Beliefs and practices of the nursing team related to pressure injury preventive measures: A analysis of social representations

Abstract

Aims and Objectives

To analyse the process of elaborating social representations about pressure injury preventive measures by the nursing team (nurses and nurse technicians) and how this process relates to preventive practices for hospitalized patients.

Design

Qualitative study, with the application of the theory of social representations in its procedural methodological approach.

Methods

The study was carried out in an inpatient clinic of a public hospital in the state of Rondônia, Brazil. Totally, 28 nursing professionals in the medical clinic sectors who had worked directly with patient care for more than 6 months participated. The data were collected between July and September 2021 via in-depth interviews with the application of a semi-structured instrument. Analysis was carried out with the help of ALCESTE software, which performed a lexicographic analysis, and also via thematic analysis. The COREQ guided the presentation of the research report.

Results

The social representations were developed based on the professionals' symbolic beliefs about the visibility/invisibility of the results of applying preventive care. These symbolic constructions mobilized positive and negative feelings among the nursing team, which guided the classification of prevention practices as being of greater or lesser priority among other care activities. There were favourable attitudes among professionals, which included applying prevention measures in their daily routines, and unfavourable attitudes of non-adherence to the institution's protocol for preventing pressure injuries.

Conclusions

The nursing team's perception of pressure injury prevention is influenced by symbolic, affective, values, and social dimensions. Non-adherence behaviours are attributed to the belief in the invisibility of prevention outcomes, resulting in a reluctance to implement preventive measures.

Relevance to Clinical Practice

Understanding the subjective logic that explains the thinking and actions of the nursing team suggests the need to incorporate discussions on beliefs, values, sentiments, and attitudes of nursing professionals into educational programs on pressure injury prevention.

Patient or Public Contribution

No public contribution.

Mapping health promotion practices across key sectors and its intersectoral approach at the local level: Study protocol

Abstract

Aims

This study outlines a protocol aimed at identifying and mapping health promotion practices in need of development from the perspectives of key sectors responsible for it at the local level and from an intersectoral perspective across four Spanish regions.

Design

A complementary multi-method study combining survey methods and qualitative interviews will be adopted.

Methods

Purposive snowball sampling will be employed to select potentially rich informants from city councils, primary care centres, primary and secondary schools, and public health and civil society organizations in 12 municipalities sensitive to local health. Data on the degree of execution of health promotion activities, the level of intersectorality in their implementation, and their origins will be collected using PromoACTIVA questionnaires, an intersectoral typology model and an interview protocol. A parallel mixed analysis encompassing descriptive statistics and a ‘framework analysis’ will be performed.

Discussion

This study is expected to yield thorough and reliable insights into health promotion practices and omissions at the local level by focusing on key stakeholders, both individually and collaboratively. This information can enhance health promotion planning and improve its effectiveness, efficiency and contextual relevance. The development and testing of a methodology for the integration and interpretation of these data will ensure sustainable capacity building.

Impact

Managers and practitioners interested in health promotion planning in the researched settings can benefit from a comprehensive map of the current state of their practices and insights into the starting points of collaboration. In addition, planners from other local settings will gain access to tools and methodologies to replicate and expand these maps to their own contexts.

Stakeholder Engagement

Engaging key stakeholders with experience working in or with primary care centres, public health organizations, primary and secondary schools, civil society organizations, and city councils was vital to ensure the study's relevance and feasibility.

Topical oxygen therapy and singlet oxygen in wound healing: A scoping review

Abstract

The aim of this scoping review was to provide an overview of current research into topical oxygen therapies including the under-researched singlet oxygen for wound healing. A scoping review was undertaken using five databases. After duplicates and ineligible studies were excluded, 49 studies were included for a narrative review. Out of the included 49 studies, 45 (91.8%) were published in the past 10 years (2013–2023) with 32 (65.3%) published in the past 5 years (2018–2023). Eight of the studies were systematic reviews and/or meta-analysis and 18 were RCTs. The search identified zero human RCTs on singlet oxygen, but one human cohort study and five studies in animals. There is evidence that topical oxygen therapy may be useful for the treatment of chronic wounds, mainly diabetic foot ulcers. Singlet oxygen has shown potential, but would need further confirmation in controlled human trials, including more research to understand the bio-properties.

Exploring the barriers to, and importance of, participant diversity in early-phase clinical trials: an interview-based qualitative study of professionals and patient and public representatives

Por: Chatters · R. · Dimairo · M. · Cooper · C. · Ditta · S. · Woodward · J. · Biggs · K. · Ogunleye · D. · Thistlethwaite · F. · Yap · C. · Rothman · A.
Objectives

To explore the importance of, and barriers to achieving, diversity in early-phase clinical trials.

Design

Qualitative interviews analysed using thematic analysis.

Setting and participants

Five professionals (clinical researchers and methodologists) and three patient and public representatives (those with experience of early-phase clinical trials and/or those from ethnic minority backgrounds) were interviewed between June and August 2022. Participants were identified via their institutional web page, existing contacts or social media (eg, X, formerly known as Twitter).

Results

Professionals viewed that diversity is not currently considered in all early-phase clinical trials but felt that it should always be taken into account. Such trials are primarily undertaken at a small number of centres, thus limiting the populations they can access. Referrals from clinicians based in the community may increase diversity; however, those referred are often not from underserved groups. Referrals may be hindered by the extra resources required to approach and recruit underserved groups and participants often having to undertake ‘self-driven’ referrals. Patient and public representatives stated that diversity is important in research staff and that potential participants should be informed of the need for diversity. Those from underserved groups may require clarification regarding the potential harms of a treatment, even if these are unknown. Education may improve awareness and perception of early-phase clinical trials. We provide 14 recommendations to improve diversity in early-phase clinical trials.

Conclusions

Diversity should be considered in all early-phase trials. Consideration is required regarding the extent of diversity and how it is addressed. The increased resources needed to recruit those from underserved groups may warrant funders to increase the funds to support the recruitment of such participants. The potential harms and societal benefits of the research should be presented to potential participants in a balanced but accurate way to increase transparency.

Inter-reviewer reliability of human literature reviewing and implications for the introduction of machine-assisted systematic reviews: a mixed-methods review

Por: Hanegraaf · P. · Wondimu · A. · Mosselman · J. J. · de Jong · R. · Abogunrin · S. · Queiros · L. · Lane · M. · Postma · M. J. · Boersma · C. · van der Schans · J.
Objectives

Our main objective is to assess the inter-reviewer reliability (IRR) reported in published systematic literature reviews (SLRs). Our secondary objective is to determine the expected IRR by authors of SLRs for both human and machine-assisted reviews.

Methods

We performed a review of SLRs of randomised controlled trials using the PubMed and Embase databases. Data were extracted on IRR by means of Cohen’s kappa score of abstract/title screening, full-text screening and data extraction in combination with review team size, items screened and the quality of the review was assessed with the A MeaSurement Tool to Assess systematic Reviews 2. In addition, we performed a survey of authors of SLRs on their expectations of machine learning automation and human performed IRR in SLRs.

Results

After removal of duplicates, 836 articles were screened for abstract, and 413 were screened full text. In total, 45 eligible articles were included. The average Cohen’s kappa score reported was 0.82 (SD=0.11, n=12) for abstract screening, 0.77 (SD=0.18, n=14) for full-text screening, 0.86 (SD=0.07, n=15) for the whole screening process and 0.88 (SD=0.08, n=16) for data extraction. No association was observed between the IRR reported and review team size, items screened and quality of the SLR. The survey (n=37) showed overlapping expected Cohen’s kappa values ranging between approximately 0.6–0.9 for either human or machine learning-assisted SLRs. No trend was observed between reviewer experience and expected IRR. Authors expect a higher-than-average IRR for machine learning-assisted SLR compared with human based SLR in both screening and data extraction.

Conclusion

Currently, it is not common to report on IRR in the scientific literature for either human and machine learning-assisted SLRs. This mixed-methods review gives first guidance on the human IRR benchmark, which could be used as a minimal threshold for IRR in machine learning-assisted SLRs.

PROSPERO registration number

CRD42023386706.

Barriers and facilitators to patient education provided by nurses: A mixed‐method systematic review

Abstract

Aim

To investigate the factors that facilitate or hinder nurses in providing patient education.

Design

A mixed-method systematic review.

Data Sources

Six databases (Cochrane Library, PubMed, EMBASE, Web of Science, MEDLINE and ERIC) were systematically searched for relevant publications.

Methods

The study was conducted following the JBI for mixed-method systematic reviews, and the reporting followed the PRISMA guideline. Two researchers independently performed literature screening, literature evaluation, data extraction and synthesis. PROSPERO registration number: CRD42023427451.

Results

Twenty-six eligible articles were included, including 15 quantitative articles, 10 qualitative articles and 2 mixed-methods articles. The resultant synthesis of key findings led to the identification of these barriers and facilitators, categorised into five distinct levels: nurse-related factors, organisational factors, patient-related factors, the nurse–patient relationship and interdisciplinary collaboration.

Conclusions

The findings highlight the factors that facilitate or hinder nurses in providing patient education, suggesting that multifaceted interventions can enhance the practice of patient education in nursing and support the development of appropriate patient education guidelines or public policies.

Relevance to Clinical Practice

This review delineates the facilitators and barriers influencing nurses' provision of patient education, offering an initial framework for nursing managers to craft interventions aimed at enhancing the quality of patient education provided by nurses, consequently elevating the overall quality of nursing.

Effectiveness of SCAR‐Q for assessment of incisional SCAR after implant‐based reconstruction in breast cancer patients: Can it be a tool for incision selection?

Abstract

Incisional scarring is a factor of cosmetic appearance evaluated after breast reconstruction, along with the shape, position, and size of the breast. This study aimed to examine the effect of the incision scar location on patient satisfaction after breast reconstruction. Using the Japanese version of the SCAR-Q, we assessed the scar appearance, symptoms and psychosocial effects. Plastic surgeons performed assessments using the Manchester Scar Scale. The patients were divided into two groups: those with scars on the margins of the breast (MB group) and those with scars in the breast area (IB group). The results revealed that patients in the MB group reported significantly higher satisfaction with the scar appearance and psychological impact than those in the IB group. However, assessments using the Manchester Scar Scale did not reveal any significant differences between the two groups. In conclusion, this study underscores the importance of patient-reported outcomes in the evaluation of scar satisfaction after breast reconstruction. Patients tend to prefer and have higher satisfaction with scars along the breast margin, which offers valuable insights into surgical decisions. Further studies with larger and more diverse sample sizes are required for validation.

Effect of two different modalities of hysterectomy on wound infection and wound dehiscence in obese patients

Abstract

This research intended to investigate the influence of the operation of both kinds of hysterectomies in the risk of wound infection and the degree of wound dehiscence. Both of them were open field and laparoscope. In this research, we looked into four databases: PubMed, Web of Science, Embase and Cochrane Library. Research was conducted on various operative methods for hysterectomy in obese patients between 2000 and October 2023. Two independent investigators performed an independent review of the data, established the inclusion and exclusion criteria, and managed the results with Endnote software. It also evaluated the quality of the included literature. Finally, the data were analysed with RevMan 5.3. This study involved 874 cases, 387 cases received laparoscopy and 487 cases received open access operation. Our findings indicate that there is a significant reduction in the rate of post-operative wound infection among those who have received laparoscopy compared with who have received open surgical procedures (odds ratio [OR], 0.04; 95% confidence interval [CI], 0.01–0.15; p < 0.001); There was no statistical difference between the rate of post-operative wound dehiscence and those who received laparotomy compared with those who received open surgical procedures (OR, 0.33; 95% CI, 0.10–1.11; p = 0.07); The estimated amount of blood lost during the operation was less in the laparoscopy group compared with the open procedure (mean difference, −123.72; 95% CI, −215.16 to −32.28; p = 0.008). Generally speaking, the application of laparoscopy to overweight women who have had a hysterectomy results in a reduction in the expected amount of bleeding during surgery and a reduction in the risk of post-operative wound infections.

Association of nurse managers' paternalistic leadership and nurses' perceived workplace bullying: The mediating effect of organizational climate

Abstract

Aims

To explore the association between nurse managers' paternalistic leadership and nurses' perceived workplace bullying (WPB), as well as to examine the mediating role of organizational climate in this association.

Background

There is a lack of empirical evidence regarding the relationship between nurse managers' paternalistic leadership, organizational climate and nurses' perceived WPB. Clarifying this relationship is crucial to understand how paternalistic leadership influences WPB and for nursing managers to seek organizational-level solutions to prevent it.

Methods

A cross-sectional survey was performed from 4 January to 10 February 2022, in six tertiary hospitals in mainland China. Demographic information, Paternalistic Leadership Scale, Organizational Climate Scale and Negative Acts Questionnaire-Revised were used in the survey. Descriptive statistics, Spearman correlation analyses and a structural equation model were used for data analysis.

Results

A total of 5093 valid questionnaires were collected. Moral leadership and authoritarian leadership have both direct and indirect effects on WPB through the mediating effect of organizational climate. The former is negatively related to WPB and the latter is positively related to WPB. Benevolent leadership was only negatively associated with WPB via the mediating effect of organizational climate.

Conclusion

The three components of paternalistic leadership have different effects on WPB through the mediating effect of organizational climate. Nurse managers are recommended to strengthen moral leadership, balance benevolent leadership, reduce authoritarian leadership and strive to create a positive organizational climate in their efforts to mitigate WPB among nurses.

Impact

This study enhanced our comprehension of the relationship between different leadership styles and WPB. Greater emphasis should be placed on moral leadership in the promotion of nursing managers and nursing leadership training programs. Additionally, nursing managers should focus on establishing a positive organizational climate that helps to reduce WPB.

Patient or Public Contribution

No patient or public contribution. This study did not involve patients, service users, caregivers or members of the public.

Insights on spirituality and bereavement: A systematic review of qualitative studies

Abstract

Aim

To describe a synthesis of the experience related to the spirituality of those living a bereavement journey in primary qualitative studies.

Design

A systematic review of qualitative studies.

Data Source

A systematic review was carried out in March 2019 and was updated in January 2023. Searching was accomplished by an online database, such as CINAHL, MEDLINE, PsycINFO, MedicLatina, LILACS, SciELO and Academic Search Complete. The search strategy did not consider a timeline as an eligibility criterion. The quality of the studies was assessed, and a thematic synthesis was performed in this review.

Methods

A systematic review of qualitative studies was conducted according to Saini and Shlonsky's methodology.

Reporting Method

PRISMA checklist.

Results

The review included 33 articles. Most of the studies were phenomenological and focused on parents' and family experiences of bereavement. Seven significant categories emerged, which match unmet spiritual needs during the grieving process. Two major categories were identified regarding the role of spirituality in bereavement: Spirituality as a process and spirituality as an outcome.

Conclusion

In clinical practice, attention to spirituality and providing spiritual care is critical to guarantee a holistic approach for those experiencing bereavement.

Implications

The findings of our study could foster awareness that healthcare professionals should include the spiritual dimension in their clinical practice to provide holistic care to individuals, enhancing the healing process in bereavement.

No Patient or Public Contribution

This is a systematic review.

Multimodality radiomics for tumor prognosis in nasopharyngeal carcinoma

by Sararas Khongwirotphan, Sornjarod Oonsiri, Sarin Kitpanit, Anussara Prayongrat, Danita Kannarunimit, Chakkapong Chakkabat, Chawalit Lertbutsayanukul, Sira Sriswasdi, Yothin Rakvongthai

Background

The prognosis of nasopharyngeal carcinoma (NPC) is challenging due to late-stage identification and frequently undetectable Epstein-Barr virus (EBV) DNA. Incorporating radiomic features, which quantify tumor characteristics from imaging, may enhance prognosis assessment.

Purpose

To investigate the predictive power of radiomic features on overall survival (OS), progression-free survival (PFS), and distant metastasis-free survival (DMFS) in NPC.

Materials and methods

A retrospective analysis of 183 NPC patients treated with chemoradiotherapy from 2010 to 2019 was conducted. All patients were followed for at least three years. The pretreatment CT images with contrast medium, MR images (T1W and T2W), as well as gross tumor volume (GTV) contours, were used to extract radiomic features using PyRadiomics v.2.0. Robust and efficient radiomic features were chosen using the intraclass correlation test and univariate Cox proportional hazard regression analysis. They were then combined with clinical data including age, gender, tumor stage, and EBV DNA level for prognostic evaluation using Cox proportional hazard regression models with recursive feature elimination (RFE) and were optimized using 20 repetitions of a five-fold cross-validation scheme.

Results

Integrating radiomics with clinical data significantly enhanced the predictive power, yielding a C-index of 0.788 ± 0.066 to 0.848 ± 0.079 for the combined model versus 0.745 ± 0.082 to 0.766 ± 0.083 for clinical data alone (pp Conclusions

The combination of multimodality radiomic features from CT and MR images could offer superior predictive performance for OS, PFS, and DMFS compared to relying on conventional clinical data alone.

Urinary 8-hydroxy-2'-deoxyguanosine levels and preterm births: a prospective cohort study from the Japan Environment and Childrens Study

Por: Murata · T. · Kyozuka · H. · Fukuda · T. · Imaizumi · K. · Isogami · H. · Kanno · A. · Yasuda · S. · Yamaguchi · A. · Sato · A. · Ogata · Y. · Shinoki · K. · Hosoya · M. · Yasumura · S. · Hashimoto · K. · Nishigori · H. · Fujimori · K. · The Japan Environment and Childrens Study (JECS)
Objectives

To evaluate the association between urinary 8-hydroxy-2'-deoxyguanosine (U8-OHdG) level—a marker of oxidative stress—and the incidence of preterm births (PTBs).

Design

Prospective cohort study.

Setting

The Japan Environment and Children’s Study (JECS).

Participants

Data from 92 715 women with singleton pregnancies at and after 22 weeks of gestation who were enrolled in the JECS, a nationwide birth cohort study, between 2011 and 2014 were analysed. U8-OHdG levels were assessed once in the second/third trimester using liquid chromatography–tandem mass spectrometry. Participants were categorised into the following three or five groups: low (

Primary and secondary outcome measures

Adjusted OR (aOR) for PTB before 37 and 34 weeks of gestation were calculated using a multivariable logistic regression model while adjusting for confounding factors; the moderate or lowest U8-OHdG group was used as the reference, respectively.

Results

The aORs for PTB before 37 weeks of gestation in the high U8-OHdG group were 1.13 (95% CI 1.05 to 1.22) and 1.13 (95% CI 1.04 to 1.23) after stratification. The aOR for PTB before 37 weeks in the fourth group was 0.90 (95% CI 0.81 to 0.99). After stratification, the aORs for PTB before 37 and 34 weeks in the fifth group were 1.15 (95% CI 1.03 to 1.29) and 1.46 (95% CI 1.08 to 1.97), respectively.

Conclusions

High U8-OHdG levels were associated with increased PTB incidence, especially in participants without representative causes for artificial PTB. Our results can help identify the mechanisms leading to PTB, considering the variable aetiologies of this condition; further validation is needed to clarify clinical impacts.

BioMEL: a translational research biobank of melanocytic lesions and melanoma

Por: Helkkula · T. · Christensen · G. · Ingvar · C. · Isaksson · K. · Harbst · K. · Persson · B. · Ingvar · A. · Hafström · A. · Carneiro · A. · Gaspar · V. · Jönsson · G. · Nielsen · K.
Introduction

Diagnosing invasive cutaneous melanoma (CM) can be challenging due to subjectivity in distinguishing equivocal nevi, melanoma in situ and thin CMs. The underlying molecular mechanisms of progression from nevus to melanoma must be better understood. Identifying biomarkers for treatment response, diagnostics and prognostics is crucial. Using biomedical data from biobanks and population-based healthcare data, translational research can improve patient care by implementing evidence-based findings. The BioMEL biobank is a prospective, multicentre, large-scale biomedical database on equivocal nevi and all stages of primary melanoma to metastases. Its purpose is to serve as a translational resource, enabling researchers to uncover objective molecular, genotypic, phenotypic and structural differences in nevi and all stages of melanoma. The main objective is to leverage BioMEL to significantly improve diagnostics, prognostics and therapy outcomes of patients with melanoma.

Methods and analysis

The BioMEL biobank contains biological samples, epidemiological information and medical data from adult patients who receive routine care for melanoma. BioMEL is focused on primary and metastatic melanoma, but equivocal pigmented lesions such as clinically atypical nevi and melanoma in situ are also included. BioMEL data are gathered by questionnaires, blood sampling, tumour imaging, tissue sampling, medical records and histopathological reports.

Ethics and dissemination

The BioMEL biobank project is approved by the national Swedish Ethical Review Authority (Dnr. 2013/101, 2013/339, 2020/00469, 2021/01432 and 2022/02421-02). The datasets generated are not publicly available due to regulations related to the ethical review authority.

Trial registration number

NCT05446155.

Strategies for research capacity building by family physicians in primary healthcare: a scoping review protocol

Por: Gil Conde · M. · Costa · I. · Silverio Serra · S. · Ramos · R. C. · Ribeiro · C. · Broeiro-Goncalves · P. · Penedo · C. R. · Parola · V. · Nicola · P.
Introduction

The qualities of primary healthcare (PHC) make it a very relevant environment for research; however, there is still work to be done to enhance the research capabilities of family physicians in healthcare units. Considering there is no ongoing review that specifically addresses this objective, the proposed goal of this scoping review is to determine the depth of the literature on the current strategies that support research capacity building among family physicians in the context of PHC.

Methods and analysis

The scoping review will include studies from PubMed, Scopus, Web of Science, Cochrane Library and grey literature, published from 2008 to 2023, that address strategies to promote research capacity building among family physicians in the context of PHC. Only studies published in English, Portuguese or Spanish will be considered. All study designs, including quantitative, qualitative and mixed-methods studies, will be eligible for inclusion. The literature search will be performed from January to March of 2024 and data charting will employ a descriptive-analytical method, systematically summarising study objectives, methodologies, findings and implications. This protocol follows the Preferred Reporting Items for Systematic Reviews and Meta-Analysis Protocols and the review will employ the Preferred Reporting Items for Systematic Reviews and Meta-Analyses extension for scoping reviews.

Ethics and dissemination

This review does not need ethical approval. Peer-reviewed publications, policy summaries, presentations at conferences and involvement with pertinent stakeholders are all part of our outreach approach.

Understanding nurses' experience of climate change and then climate action in Western Canada

Abstract

Aim

To understand nurses' personal and professional experiences with the heat dome, drought and forest fires of 2021 and how those events impacted their perspectives on climate action.

Design

A naturalistic inquiry using qualitative description.

Method

Twelve nurses from the interior of British Columbia, Canada, were interviewed using a semi-structured interview guide. Thematic analysis was employed. No patient or public involvement.

Results

Data analysis yielded three themes to describe nurses' perspective on climate change: health impacts; climate action and system influences. These experiences contributed to nurses' beliefs about climate change, how to take climate action in their personal lives and their challenges enacting climate action in their workplace settings.

Conclusions

Nurses' challenges with enacting environmentally responsible practices in their workplace highlight the need for engagement throughout institutions in supporting environmentally friendly initiatives.

Impact

The importance of system-level changes in healthcare institutions for planetary health.

Identification of the reporter gene combination that shows high contrast for cellular level MRI

by Naoya Hayashi, Junichi Hata, Tetsu Yoshida, Daisuke Yoshimaru, Yawara Haga, Hinako Oshiro, Ayano Oku, Noriyuki Kishi, Takako Shirakawa, Hideyuki Okano

Currently, we can label the certain cells by transducing specific genes, called reporter genes, and distinguish them from other cells. For example, fluorescent protein such as green fluorescence protein (GFP) is commonly used for cell labeling. However, fluorescent protein is difficult to observe in living animals. We can observe the reporter signals of the luciferin-luciferase system from the outside of living animals using in vivo imaging systems, although the resolution of this system is low. Therefore, in this study, we examined the reporter genes, which allowed the MRI-mediated observation of labeled cells in living animals. As a preliminary stage of animal study, we transduced some groups of plasmids that coded the protein that could take and store metal ions to the cell culture, added metal ions solutions, and measured their T1 or T2 relaxation values. Finally, we specified the best reporter gene combination for MRI, which was the combination of transferrin receptor, DMT1, and Ferritin-M6A for T1WI, and Ferritin-M6A for T2WI.

Understanding spatiotemporal patterns of COVID-19 incidence in Portugal: A functional data analysis from August 2020 to March 2022

by Manuel Ribeiro, Leonardo Azevedo, André Peralta Santos, Pedro Pinto Leite, Maria João Pereira

During the SARS-CoV-2 pandemic, governments and public health authorities collected massive amounts of data on daily confirmed positive cases and incidence rates. These data sets provide relevant information to develop a scientific understanding of the pandemic’s spatiotemporal dynamics. At the same time, there is a lack of comprehensive approaches to describe and classify patterns underlying the dynamics of COVID-19 incidence across regions over time. This seriously constrains the potential benefits for public health authorities to understand spatiotemporal patterns of disease incidence that would allow for better risk communication strategies and improved assessment of mitigation policies efficacy. Within this context, we propose an exploratory statistical tool that combines functional data analysis with unsupervised learning algorithms to extract meaningful information about the main spatiotemporal patterns underlying COVID-19 incidence on mainland Portugal. We focus on the timeframe spanning from August 2020 to March 2022, considering data at the municipality level. First, we describe the temporal evolution of confirmed daily COVID-19 cases by municipality as a function of time, and outline the main temporal patterns of variability using a functional principal component analysis. Then, municipalities are classified according to their spatiotemporal similarities through hierarchical clustering adapted to spatially correlated functional data. Our findings reveal disparities in disease dynamics between northern and coastal municipalities versus those in the southern and hinterland. We also distinguish effects occurring during the 2020–2021 period from those in the 2021–2022 autumn-winter seasons. The results provide proof-of-concept that the proposed approach can be used to detect the main spatiotemporal patterns of disease incidence. The novel approach expands and enhances existing exploratory tools for spatiotemporal analysis of public health data.

Chloroquine decreases cardiac fibrosis and improves cardiac function in a mouse model of Duchenne muscular dystrophy

by Takuya Hirata, Shiro Baba, Kentaro Akagi, Koichi Matsuda, Katsutsugu Umeda, Souichi Adachi, Toshio Heike, Junko Takita

Background

Duchenne muscular dystrophy (DMD), a severe degenerative skeletal and cardiac muscle disease, has a poor prognosis, and no curative treatments are available. Because decreased autophagy has been reported to contribute to skeletal muscle degeneration, therapies targeting autophagy are expected to improve skeletal muscle hypofunction. However, the role of this regulatory mechanism has not been evaluated clearly in DMD cardiomyocytes.

Methods

In this present study, we evaluated myocardial fibrosis and its mechanism in mdx mice, a model of DMD, and also evaluated changes in cardiac function.

Results

As assessed by LC3 immunohistochemistry, a small number of autophagosomes were detected in cardiomyocytes of both mdx mice and control wild-type (WT) mice. The number of autophagosomes was significantly enhanced by 4 weeks of isoproterenol-induced cardiac stress in cardiomyocytes of mdx but not WT mice. Simultaneously, isoproterenol increased cardiomyocyte fibrosis in mdx but not WT mice. Administration of chloroquine significantly decreased cardiomyocyte fibrosis in mdx mice, even after isoproterenol treatment. Left ventricle size and function were evaluated by echocardiography. Left ventricular contraction was decreased in mdx mice after isoproterenol treatment compared with control mice, which was alleviated by chloroquine administration.

Conclusions

Heart failure in DMD patients is possibly treated with chloroquine, and the mechanism probably involves chloroquine’s anti-inflammatory effects.

Unveiling the intellectual structure of informality: Insights from the socioeconomic literature

by Nelson Alfonso Gómez-Cruz, David Anzola, Aglaya Batz Liñeiro

In the socioeconomic sphere, the concept of informality has been used to address issues pertaining to economic dynamics, institutions, work, poverty, settlements, the use of space, development, and sustainability, among others. This thematic range has given way to multiple discourses, definitions and approaches that mostly focus on a single phenomenon and conform to traditional disciplinary lines, making it difficult to fully understand informality and adequately inform policymaking. In this article, we carried out a multilevel co-word analysis with the purpose of unveiling the intellectual structure of socioeconomic informality. Co-occurring document keywords were used, initially, to delimit the scope of the socioeconomic dimension of informality (macro level) and, later, to identify its main concepts, themes (meso level) and sub-themes (micro level). Our results show that there is a corpus of research on socioeconomic informality that is sufficiently differentiable from other types of informality. This corpus, at the same time, can be divided into six major themes and 31 sub-themes related, more prominently, to the informal economy, informal settlements and informal institutions. Looking forward, the analysis suggests, an increasing focus on context and on the experience of multiple ‘informalities’ has the potential, on the one hand, to reveal links that help unify this historically fragmented corpus and, on the other hand, to give informality a meaning and identity that go beyond the traditional formal-informal dualism.
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