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BACKGROUND/OBJECTIVES: Childhood and adolescence are important stages of life for acquiring healthy habits. There is a high prevalence of sedentary lifestyles worldwide during these ages, which negatively impacts health. This is attributed, in part, to excessive time spent engaging in sedentary behaviors. The aim of this study was to assess the time spent on sedentary behaviors and their relationship with physical activity levels in children and adolescents in the Community of Madrid. METHODS: A total of 26,729 participants aged 10-17 from various schools and institutes took part in this study. The International Physical Activity Questionnaire Short Form (IPAQ-SF) was used, and they were asked about the time they spent on different leisure time habits (specific sedentary behaviors and organized physical activity). A generalized linear model was used to analyze the association between the time spent in sedentary activities and the time spent in physical activity. RESULTS: The results revealed that children and adolescents engage in low levels of physical activity and most of them spend considerable time in sedentary behaviors such as studying, watching television, or using social media. Completing school homework (Coef: 1.23, 95% CI: -0.51 to 2.97, p = 0.167) or using social media for more than 2 h (Coef: 1.29, 95% CI: -2.98 to 0.40, p = 0.133) compared to not dedicating time to them did not show a significant association with daily physical activity time. Watching television for more than 2 h was associated with a decrease of 2.60 min (95% CI: -4.41 to -0.78, p = 0.005). Thus, no or only irrelevant associations were found between time spent in sedentary activities and physical activity time. CONCLUSIONS: Despite the drawbacks of spending time engaging in sedentary behaviors, they seem to be compatible with physical activity levels. Therefore, it is important to continue research on physical activity adherence strategies to promote overall health and well-being.
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RATIONALE: The Knowledge Translation (KT) Programme of a pan-Canadian strategic patient-oriented research network focused on brain-based developmental disabilities aimed to mobilize knowledge relevant to the network members. The programme also promotes and studies integrated Knowledge Translation (iKT) approaches involving different interested parties, such as researchers, patient-partners and decision-makers, in all parts of the knowledge creation process. AIMS AND OBJECTIVES: The objective of this study is to advance research programme evaluation methods through a realist evaluation of the process of implementing iKT activities. METHODS: Realist process evaluation included: (1) development of initial programme theories (using the partnership synergy theory); (2) data collection and analysis; (3) synthesis and refinement of theories through engagement with literature; and (4) presentation of findings in context-mechanism-outcome (C-M-O) configurations. A range of project documentation records were reviewed for analysis, and three co-leads, a programme coordinator, and a senior research associate were consulted to contextualize the implementation process of relevant KT activities. RESULTS: Based on the developed C-M-O configurations, we identified five key mechanisms of generating synergy in the iKT processes: (1) Visible shared leadership that embodies what iKT looks like; (2) Researchers' readiness for iKT; (3) Adaptation and flexible allocation of resources to emerging needs; (4) Power sharing to create practical and creative knowledge; and (5) Collective voice for potential transformative impacts at the policy level. CONCLUSIONS: The current realist evaluation demonstrated how partnerships between researchers, patient-partners and other interested parties can synergistically generate new ways of thinking among all interested parties, actionable strategies to integrate users in research, and solutions to disseminate knowledge. In particular, we identified a pivotal role for patient-partners to act as equal decision-maker helps building and maintaining partnerships and consolidating KT strategies.
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BACKGROUND: To assess 20-year time trends in the prevalence of diabetes mellitus (DM) among inpatients with heart failure (HF) and the influence of coexisting DM and kidney disease (KD) on outcomes. RESEARCH DESIGN AND METHODS: A retrospective study of patients was admitted due to HF, during the period 2000/2019. The period of follow-up was divided into three intervals according to the European Medical Agency approval of newer hypoglycemic drugs. We analyzed in-hospital mortality and outcomes during the follow-up period. RESULTS: A total of 4959 patients were included. Over time, prevalence of DM was significantly raising among women with HF (50 to 53.2%) and descending among men (50% to 46.8%, p = 0.02). Total mortality and readmissions were higher in patients with DM during the and second periods. However, no significant differences were found in the third-one (HR 1.14, 95% CI 0.94-1.39, p = 0.181). A protector role of oral hypoglycemic medications was observed in this last period. According to the presence of KD, the patients with both DM and KD were who presented most of the events. CONCLUSIONS: Over the time analyzed, the prevalence of DM raised among women and decreased among men. DM influenced the prognosis of HF except in the third period when more protective hypoglycemic drugs started to be used.
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Plant glutamate receptors (GLRs) are integral membrane proteins that function as non-selective cation channels, involved in the regulation of developmental events crucial in plants. Knowledge of these proteins is restricted to a few species and their true agonists are still unknown in plants. Using tomato SlGLRs, a search was performed in the pepper database to identify GLR sequences in habanero pepper (Capsicum chinense Jacq.). Structural, phylogenetic, and orthology analysis of the CcGLRs, as well as molecular docking and protein interaction networks, were conducted. Seventeen CcGLRs were identified, which contained the characteristic domains of GLR. The variation of conserved residues in the M2 transmembrane domain between members suggests a difference in ion selectivity and/or conduction. Also, new conserved motifs in the ligand-binding regions are reported. Duplication events seem to drive the expansion of the species, and these were located in the evolution by using orthologs. Molecular docking analysis allowed us to identify differences in the agonist binding pocket between CcGLRs, which suggest the existence of different affinities for amino acids. The possible interaction of some CcGLRs with proteins leads to suggesting specific functions for them within the plant. These results offer important functional clues for CcGLR, probably extrapolated to other Solanaceae.
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Introduction: Children with cancer experience significant pain and anxiety during needle-based procedures. Undertreated pain in children has long-lasting consequences and reduces the efficacy of subsequent analgesic efforts. A validated quality improvement (QI) intervention, known as the "Children's Comfort Promise", includes (1) topical anesthetics, (2) sucrose or breastfeeding for infants, (3) comfort positioning, and (4) distraction techniques, and has been shown to be highly effective in decreasing procedural pain and anxiety in children. However, there is limited data about the adoption, adaptation, and implementation of these interventions in low- and middle-income countries (LMICs). Methods: A QI pilot project utilizing the Model for Improvement of the "Global Comfort Promise" was implemented in four global pediatric cancer hospitals (Lima, Peru; Barretos, Brazil; Pietermaritzburg, South Africa; and Manila, Philippines). Between August 2021 and January 2023, the pilot sites identified a specific aim, co-designed the measurement strategy with St. Jude Children's Research Hospital, and adopted, adapted, and implemented the project at their individual sites. Results: A total of 2,185 different procedures were recorded in the first year of implementation. Most patients were less than 10 years old (60.5%) and solid tumors (37.9%) were the most common diagnosis. Overall, healthcare professionals (98.3%) were satisfied with the procedures. Parents and patients reported that only 33.7% of patients experienced pain during the procedure. All (100%) parents and patients felt the healthcare teams adequately addressed their child's pain. Median self-reported adherence to ≥2 interventions was 98.0%. Challenges to the implementation of the QI initiative included lack of training, turnover of the medical staff, maintaining staff enthusiasm, and access to topical anesthetics. Each site had unique change ideas to implement the initiative. Conclusions: This multi-site, multi-country QI initiative was feasible and was successfully adopted, adapted, and implemented in the LMIC context to improve procedural pain in children (Global Comfort Promise). Additionally, this intervention resulted in high satisfaction of both healthcare professionals and patients/families. Further work is needed to overcome the challenges of topical anesthetic access and education of the workforce. Additional plans include modifying the Global Comfort Promise to include high-quality communication and expanding to additional sites with further refinement of the implementation strategy.
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Molecular functionalization of MoS2 has attracted a lot of attention due to its potential to afford fine-tuned hybrid materials that benefit from the power of synthetic chemistry and molecular design. Here, we report on the on-surface reaction of maleimides on bulk and molecular beam epitaxy grown single-layer MoS2, both in ambient conditions as well as ultrahigh vacuum using scanning probe microscopy.
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BACKGROUND: The CHILD-BRIGHT Network, a pan-Canadian childhood disability research Network, is dedicated to patient-oriented research, where numerous stakeholders, including patient-partners, researchers, and clinicians are involved at different levels. The Network is committed to continuously improving the level of engagement and partnerships' impact. Measuring patient engagement is therefore important in reflecting on our practices and enhancing our approaches. We aimed to measure patient engagement longitudinally and explore in greater depth the perceived benefits, barriers and facilitators, and overall satisfaction with patient engagement, from the perspectives of the different stakeholders. METHODS: Patient engagement was measured using online surveys. In a longitudinal study design over a 3-years period (2018-2020) the Community-Based Participatory Research (CBPR) questionnaire was used. To enrich our understanding of patient engagement in Year 3, we employed the Public and Patient Engagement Evaluation Tool (PPEET) in a cross-sectional, convergent parallel mixed-method study design. Descriptive statistics and a thematic-based approach were used for data analysis. RESULTS: The CBPR questionnaire was completed by n = 167 (61.4% response rate), n = 92 (30.2% response rate), and n = 62 (14.2% response rate) Network members in Years 1, 2, and 3, respectively. Ninety-five (n = 95, 21.8% response rate) members completed the PPEET in Year 3. CBPR findings demonstrate a stable and high satisfaction level with patient engagement over time, where 94%, 86%, and 94% of stakeholders indicated that the project is a "true partnership" in Years 1, 2, and 3, respectively. In Years 2 and 3, we noted an improvement in patient-partners' comfort level in sharing their views and perspectives (92% and 91% vs. 74%). An increase in critical reflective trust (i.e., allowing for discussing and resolving mistakes) from Year 1 to 3 was found, both from the perspectives of patient-partners (51-65%) and researchers (48-75%). Using the PPEET, patient engagement factors (i.e., communications and supports for participation, ability to share views and perspectives) and impact were highly rated by most (80-100%) respondents. PPEET's qualitative responses revealed several patient engagement advantages (e.g., increased projects' relevance, enhanced knowledge translation), barriers (e.g., group homogeneity), facilitators (e.g., optimal communication strategies), and solutions to further improve patient engagement (e.g., provide clarity on goals). CONCLUSION: Our 3-years patient engagement evaluation journey demonstrated a consistent and high level of satisfaction with patient engagement within the Network and identified advantages, barriers, facilitators, and potential solutions. Improvements were observed in members' comfort in sharing their views and perspectives, along with an increase in critical reflective trust. These findings underscore the Network's commitment to enhancing patient engagement and provide valuable insights for continued improvement and optimization of collaborative efforts.
The CHILD-BRIGHT Network, a Canadian childhood disability research Network, is dedicated to patient-oriented research. It engages more than 300 diverse stakeholders, including patient-partners, researchers, and healthcare professionals. We conducted a 3-years study aimed to measure patient engagement over time and delve into the perceived benefits, barriers, and facilitators from the perspectives of the different members. We administered the Community-Based Participatory Research (CBPR) questionnaire in Years 13 (completed by 167, 92, and 62 members, respectively) and the Public and Patient Engagement Evaluation Tool (PPEET) in Year 3 (completed by 95 members). Through the CBPR, we identified in which research processes were Network members involved (e.g., defining the research question, results dissemination), appraised the partnership between researchers and other stakeholders such as patient-partners, and determined the type of trust in this partnership. The use of the PPEET allowed us to explore patient engagement impact and what factors facilitate and limit patient engagement (e.g., communication and supports). CBPR results showed a consistently high satisfaction level with patient engagement, with increased comfort among patient-partners in expressing their views over time, showcasing positive collaborative dynamics. Most stakeholders reported a "true partnership" in their engagement, indicating widespread belief in equitable relationships. Additionally, critical reflective trust, allowing for discussing and resolving mistakes in collaborative working activities, increased over the years, with the highest endorsement in Year 3, demonstrating growing trust among stakeholders. The PPEET findings showed positive ratings for communication, support, and impact of patient engagement. Its qualitative responses identified advantages (e.g., increased project relevance), barriers (e.g., lack of diversity in members' demographic characteristics), facilitators (e.g., effective communication), and suggested improvements (e.g., ensuring goal clarity). In conclusion, our project showed that the partnership between researchers and patient-partners was beneficial, satisfactory and evolved positively over time. The findings are encouraging provided the breadth of the Network, where hundreds of members are primarily connected virtually. We learned that: (1) It is possible to measure patient engagement in a large Network, both at one point in time and over time, and multiple tools can be used together to get a better picture. (2) Regular evaluations are important to optimize the partnership and its impact. (3) The partnership can be improved and strengthened with time through ongoing collaboration, open communication, and a commitment to address the evolving needs and dynamics of all stakeholders involved.
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BACKGROUND: Although the number of children living with complex care needs (CCN) is increasing worldwide, there is limited data on the experience of fathers caring for children with CCN. This paper reports on findings specific to fathers' experiences of caring for their child with CCN and highlights recommendations provided for parents of children with CCN, service providers, and policymakers. The findings emerged from a larger study designed to examine how Canadian families of children with CCN participate in society. METHODS: We used the qualitative research approach of ethnography and arts-based methodologies (ecomaps and photovoice) as well as purposive and snowball sampling techniques. Four parents were engaged as advisors and twenty-nine fathers participated in interviews (all were married or in a relationship; age range of 28 to 55 years). In line with an ethnographic approach, data analysis involved several iterative steps including comparing data from the first, second, and third set of interviews and refining themes. RESULTS: One overarching theme, striving to be there for the child with CCN, was identified. Five supporting themes further exemplified how fathers strived to be there for their child: 1) contributing to the parental team through various roles; 2) building accessibility through adaptation; 3) engaging in activities with the child; 4) expressing admiration and pride in their children; and 5) meaning making. Recommendations for parents included making and nurturing connections and asking for help while recommendations for healthcare and social service providers included communicating authentically with families and listening to parents. Fathers also indicated that leadership and funding for programs of families of children with CCN should be priorities for policymakers. CONCLUSIONS: In addition to documenting fathers' active involvement in their child's care and development, our findings provide new insights into how fathers make participation in everyday life accessible and inclusive for their children. Study findings also point to 1) priority areas for policymakers (e.g., accessible physical environments); 2) factors that are critical for fostering collaborative care teams with fathers; and 3) the need for complex care teams in the adult health care system. Implications for those providing psychosocial support for these families are noted as well as knowledge gaps worthy of future exploration such as the role of diversity or intersectionality in fathering children with CCN.
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Antropología Cultural , Padres , Niño , Adulto , Humanos , Persona de Mediana Edad , Masculino , Canadá , Padres/psicología , Investigación Cualitativa , Padre/psicologíaRESUMEN
MXenes are electrically conductive 2D transition metal carbides/nitrides obtained by the etching of nanolaminated MAX phase compounds, followed by exfoliation to single- or few-layered nanosheets. The mainstream chemical etching processes have evolved from pure hydrofluoric acid (HF) etching into the innovative "minimally intensive layer delamination" (MILD) route. Despite their current popularity and remarkable application potential, the scalability of MILD-produced MXenes remains unproven, excluding MXenes from industrial applications. This work proposes a "next-generation MILD" (NGMILD) synthesis protocol for phase-pure, colloidally stable MXenes that withstand long periods of dry storage. NGMILD incorporates the synergistic effects of a secondary salt, a richer lithium (Li) environment, and iterative alcohol-based washing to achieve high-purity MXenes, while improving etching efficiency, intercalation, and shelf life. Moreover, NGMILD comprises a sulfuric acid (H2 SO4 ) post-treatment for the selective removal of the Li3 AlF6 impurity that commonly persists in MILD-produced MXenes. This work demonstrates the upscaled NGMILD synthesis of (50 g) phase-pure Ti3 C2 Tz MXene clays with high extraction yields (>22%) of supernatant dispersions. Finally, NGMILD-produced MXene clays dry-stored for six months under ambient conditions experience minimal degradation, while retaining excellent redispersibility. Overall, the NGMILD protocol is a leap forward toward the industrial production of MXenes and their subsequent market deployment.
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To determine the readmissions trends and the comorbidities of patients with heart failure that most influence hospital readmission rates. Heart failure (HF) is one of the most prevalent health problems as it causes loss of quality of life and increased health-care costs. Its prevalence increases with age and is a major cause of re-hospitalisation within 30 days after discharge. INCA study had observational and ambispective design, including 4,959 patients from 2000 to 2019, with main diagnosis of HF in Extremadura (Spain). The variables examined were collected from discharge reports. To develop the readmission index, capable of discriminating the population with higher probability of re-hospitalisation, a Competing-risk model was generated. Readmission rate have increased over the period under investigation. The main predictors of readmission were: age, diabetes mellitus, presence of neoplasia, HF without previous hospitalisation, atrial fibrillation, anaemia, previous myocardial infarction, obstructive pulmonary disease (COPD) and chronic kidney disease (CKD). These variables were assigned values with balanced weights, our INCA index showed that the population with values greater than 2 for men and women were more likely to be re-admitted. Previous HF without hospital admission, CKD, and COPD appear to have the greatest effect on readmission. Our index allowed us to identify patients with different risks of readmission.
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Insuficiencia Cardíaca , Readmisión del Paciente , Readmisión del Paciente/estadística & datos numéricos , Readmisión del Paciente/tendencias , Insuficiencia Cardíaca/diagnóstico , Insuficiencia Cardíaca/epidemiología , Alta del Paciente/estadística & datos numéricos , España/epidemiología , Factores de Riesgo , Medición de Riesgo , Humanos , Masculino , FemeninoRESUMEN
BACKGROUND: Determining the risk of grade 3-5 toxicity and early death (ED) is important to plan chemotherapy in older adult patients with cancer. Our objective was to identify factors predicting these complications at the time of treatment initiation. METHODS: 234 patients aged ≥70 were subjected to a geriatric assessment and variables related to the tumor and the treatment were also collected. Logistic regression multivariable analysis was used to relate these factors with the appearance of grade 3-5 toxicity and ED. Predictive scores for both toxicity and ED were then developed. RESULTS: Factors related to grade 3-5 toxicity were hemoglobin, MAX2 index, ADL, and the CONUT score. Factors related to ED were tumor stage and the GNRI score. Two predictive scores were developed using these variables. ROC curves for the prediction of toxicity and ED were 0.71 (95% CI: 0.64-0.78) and 0.73 (95% CI: 0.68-0.79), respectively. CONCLUSIONS: Two simple and reliable scores were developed to predict grade 3-5 toxicity and ED in older adult patients with cancer. This may be helpful in treatment planning.
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PURPOSE OF REVIEW: Mechanical nasal obstruction (MNO) is a prevalent condition with a high impact on patient's quality-of-life (QoL) and socio-economic burden. The aim of this study was to determine the usefulness of both subjective and objective criteria in the appropriate management of MNO, either alone or associated to upper airway inflammatory diseases such as allergic rhinitis (AR) or chronic rhinosinusitis with nasal polyps (CRSwNP). RECENT FINDINGS: A long debate persists about the usefulness of subjective and objective methods for making decisions on the management of patients with nasal obstruction. Establishing standards and ranges of symptom scales and questionnaires is essential to measure the success of an intervention and its impact on QoL. To our knowledge this is the first real-life study to describe the management of MNO using both subjective and objective criteria in MNO isolated or associated to upper airway inflammatory diseases (AR or CRSwNP). Medical treatment (intranasal corticosteroids) has a minor but significant improvement in MNO subjective outcomes (NO, NOSE, and CQ7) with no changes in loss of smell and objective outcomes. After surgery, all MNO patients reported a significant improvement in both subjective and objective outcomes, this improvement being higher in CRSwNP. We concluded that in daily clinical practice, the therapeutic recommendation for MNO should be based on both subjective and objective outcomes, nasal corrective surgery being the treatment of choice in MNO, either isolated or associated to upper airway inflammatory diseases, AR or CRSwNP.
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Obstrucción Nasal , Pólipos Nasales , Rinitis Alérgica , Rinitis , Humanos , Obstrucción Nasal/terapia , Obstrucción Nasal/cirugía , Calidad de Vida , Rinitis/complicaciones , Rinitis/diagnóstico , Rinitis/terapia , Nariz , Rinitis Alérgica/complicaciones , Rinitis Alérgica/diagnóstico , Rinitis Alérgica/terapia , Pólipos Nasales/complicaciones , Pólipos Nasales/diagnóstico , Pólipos Nasales/terapia , Enfermedad CrónicaRESUMEN
Boosted by the emerging need for highly integrated gas sensors in the internet of things (IoT) ecosystems, electronic noses (e-noses) are gaining interest for the detection of specific molecules over a background of interfering gases. The sensing of nitrogen dioxide is particularly relevant for applications in environmental monitoring and precision medicine. Here we present an easy and efficient functionalization procedure to covalently modify graphene layers, taking advantage of diazonium chemistry. Separate graphene layers were functionalized with one of three different aryl rings: 4-nitrophenyl, 4-carboxyphenyl and 4-bromophenyl. The distinct modified graphene layers were assembled with a pristine layer into an e-nose for NO2 discrimination. A remarkable sensitivity to NO2 was demonstrated through exposure to gaseous solutions with NO2 concentrations in the 1-10â ppm range at room temperature. Then, the discrimination capability of the sensor array was tested by carrying out exposure to several interfering gases and analyzing the data through multivariate statistical analysis. This analysis showed that the e-nose can discriminate NO2 among all the interfering gases in a two-dimensional principal component analysis space. Finally, the e-nose was trained to accurately recognize NO2 contributions with a linear discriminant analysis approach, thus providing a metric for discrimination assessment with a prediction accuracy above 95 %.
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PURPOSE: In the absence of a standardized tool to assess the quality of pediatric hematology/oncology training programs, the Education Program Assessment Tool (EPAT) was conceptualized as a user-friendly and adaptable tool to evaluate and identify areas of opportunity, pinpoint needed modifications, and monitor progress for training programs around the world. METHODS: The development of EPAT consisted of three main phases: operationalization, consensus, and piloting. After each phase, the tool was iteratively modified based on feedback to improve its relevance, usability, and clarity. RESULTS: The operationalization process led to the development of 10 domains with associated assessment questions. The two-step consensus phase included an internal consensus phase to validate the domains and a subsequent external consensus phase to refine the domains and overall function of the tool. EPAT domains for programmatic evaluation are hospital infrastructure, patient care, education infrastructure, program basics, clinical exposure, theory, research, evaluation, educational culture, and graduate impact. EPAT was piloted in five training programs in five countries, representing diverse medical training and patient care contexts for proper validation of the tool. Face validity was confirmed by a correlation between the perceived and calculated scores for each domain (r = 0.78, p < .0001). CONCLUSIONS: EPAT was developed following a systematic approach, ultimately leading to a relevant tool to evaluate the different core elements of pediatric hematology/oncology training programs across the world. With EPAT, programs will have a tool to quantitatively evaluate their training, allowing for benchmarking with centers at the local, regional, and international level.
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Children with disabilities were especially vulnerable during the COVID-19 pandemic, and policies designed to mitigate its effects were limited in addressing their needs. We analyzed Canadian policies related to children with disabilities and their families during the COVID-19 pandemic to identify the extent to which these policies aligned with the United Nations Convention on the Rights of Persons with Disabilities (UN CRPD) and responded to their mental health needs by conducting a systematic collection of Canadian provincial/territorial policies produced during the pandemic, building a categorization dictionary based on the UN CRPD, using text mining, and thematic analysis to identify policies' alignment with the UN CRPD and mental health supports. Mental health was addressed as a factor of importance in many policy documents, but specific interventions to promote or treat mental health were scarce. Most public health policies and recommendations are related to educational settings, demonstrating how public health for children with disabilities relies on education and community that may be out of the healthcare system and unavailable during extended periods of the pandemic. Policies often acknowledged the challenges faced by children with disabilities and their families but offered few mitigation strategies with limited considerations for human rights protection.
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Chemical patterning surfaces is relevant in several different domains of science and technology with exciting possibilities in electronics, catalysis, sensing, and photonics. Here, we present a novel strategy for chemical patterning of graphite using a combination of covalent and non-covalent approaches. Building on our previous work, where self-assembled monolayers of linear alkanes were used as sacrificial masks for directing the covalent anchoring of aryl groups to the graphite surface in sub-10 nm arrays, we present a modified design of a template alkane with alkoxy terminal groups which allowed better pattern transfer fidelity in comparison to simple linear alkanes. We also explored the use of chronoamperometry (CA) instead of previously used cyclic voltammetry (CV) for the functionalization process, which enabled patterning of the graphite surface at two-different length scales: few hundred nanometer circular patterns interspersed with sub-10 nm linear arrays. The covalent chemical patterning process has been studied in detail using CV and CA measurements whereas the patterned substrates have been thoroughly characterized using Raman spectroscopy, scanning tunnelling microscopy (STM) and atomic force microscopy (AFM). Based on the comparison between the pattern transfer fidelity of previously studied alkanes and newly synthesized alkoxy alkane, we discuss plausible molecular mechanism of pattern transfer.
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Grafito , Grafito/química , Microscopía de Fuerza Atómica/métodos , Nanotecnología/métodos , Alcanos/químicaRESUMEN
The oral cavity of humans is colonized by diversity of microbial community, although dominated by bacteria, it is also constituted by a low number of fungi, often represented by Candida albicans. Although in the vast minority, this usually commensal fungus under certain conditions of the host (e.g., immunosuppression or antibiotic therapy), can transform into an invasive pathogen that adheres to mucous membranes and also to medical or dental devices, causing mucosal infections. This transformation is correlated with changes in cell morphology from yeast-like cells to hyphae and is supported by numerous virulence factors exposed by C. albicans cells at the site of infection, such as multifunctional adhesins, degradative enzymes, or toxin. All of them affect the surrounding host cells or proteins, leading to their destruction. However, at the site of infection, C. albicans can interact with different bacterial species and in its filamentous form may produce biofilms-the elaborated consortia of microorganisms, that present increased ability to host colonization and resistance to antimicrobial agents. In this review, we highlight the modification of the infectious potential of C. albicans in contact with different bacterial species, and also consider the mutual bacterial-fungal relationships, involving cooperation, competition, or antagonism, that lead to an increase in the propagation of oral infection. The mycofilm of C. albicans is an excellent hiding place for bacteria, especially those that prefer low oxygen availability, where microbial cells during mutual co-existence can avoid host recognition or elimination by antimicrobial action. However, these microbial relationships, identified mainly in in vitro studies, are modified depending on the complexity of host conditions and microbial dominance in vivo.
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Candida albicans , Interacciones Microbianas , Humanos , Boca/microbiología , Biopelículas , Simbiosis , BacteriasRESUMEN
Synergically combining their respective ultrahigh charge mobility and strong light absorption, graphene (Gr)/semiconductor heterostructures are promising building blocks for efficient optoelectronics, particularly photodetectors. Charge transfer (CT) across the heterostructure interface crucially determines device efficiency and functionality. Here, it is reported that hole-transfer processes dominate the ultrafast CT across strongly coupled double-perovskite Cs2 AgBiBr6 /graphene (DP/Gr) heterostructures following optical excitation. While holes are the primary charges flowing across interfaces, their transfer direction, as well as efficiency, show a remarkable dependence on the excitation wavelength. For excitation with photon energies below the bandgap of DPs, the photoexcited hot holes in Gr can compete with the thermalization process and inject into in-gap defect states in DPs. In contrast, above-bandgap excitation of DP reverses the hole-transfer direction, leading to hole transfer from the valence band of DPs to Gr. Experimental evidence that increasing the excitation photon energy enhances CT efficiency for both below- and above-bandgap photoexcitation regimes is further provided, unveiling the positive role of excess energy in enhancing interfacial CT. The possibility of switching the hole-transfer direction and thus the interfacial photogating field by tuning the excitation wavelength, provides a novel way to control the interfacial charge flow across a DP/Gr heterojunction.
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BACKGROUND: Little research attention has been given to understanding the lived experience of parents who access mental health services in the context of child anxiety disorders. This paper reports on findings specific to parents' lived experience of accessing services for their child living with anxiety and the recommendations they provided for improving access. METHODS: We used the qualitative research approach of hermeneutic phenomenology. The sample included 54 Canadian parents of youth living with an anxiety disorder. Parents took part in one semi-structured and one open-ended interview. We used a 4 staged data analysis process informed by van Manen's approach and Levesque and colleagues' framework of access to healthcare. RESULTS: The majority of parents reported being female (85%), white (74%), and single parents (39%). Parents' ability to seek and obtain services was affected by not knowing when or where to access services, having to learn to navigate the system, limited availability of services, lack of timely services and interim supports, limited financial resources, and clinicians' dismissal of parental concerns and knowledge. Provider (ability to listen), parent (willingness to participate in therapy), child (same race/ethnicity as provider), and service characteristics (cultural sensitivity) influenced whether parents perceived services as approachable, acceptable, and appropriate. Parents' recommendations focused on: (1) improving the availability, timeliness, and coordination of services, (2) providing supports for parents and the child to facilitate obtaining care (education, interim supports), (3) improving communication with and among healthcare professionals, (4) the need to recognize parents' experience-based knowledge, and (5) encouraging parents to take care of themselves and advocate for their child. CONCLUSIONS: Our findings point to possible avenues (parents' ability, service characteristics) that can be targeted to improve service access. As experts on their situation, parents' recommendations highlight priority needs of relevance to health care professionals and policymakers.
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Servicios de Salud Mental , Padres , Adolescente , Humanos , Niño , Femenino , Masculino , Canadá , Padres/psicología , Trastornos de Ansiedad , Investigación Cualitativa , AnsiedadRESUMEN
BACKGROUND: Little is known about patient engagement in the context of large teams or networks. Quantitative data from a larger sample of CHILD-BRIGHT Network members suggest that patient engagement was beneficial and meaningful. To extend our understanding of the barriers, facilitators, and impacts identified by patient-partners and researchers, we conducted this qualitative study. METHODS: Participants completed semi-structured interviews and were recruited from the CHILD-BRIGHT Research Network. A patient-oriented research (POR) approach informed by the SPOR Framework guided the study. The Guidance for Reporting Involvement of Patients and the Public (GRIPP2-SF) was used to report on involvement of patient-partners. The data were analyzed using a qualitative, content analysis approach. RESULTS: Twenty-five CHILD-BRIGHT Network members (48% patient-partners, 52% researchers) were interviewed on their engagement experiences in the Network's research projects and in network-wide activities. At the research project level, patient-partners and researchers reported similar barriers and facilitators to engagement. Barriers included communication challenges, factors specific to patient-partners, difficulty maintaining engagement over time, and difficulty achieving genuine collaboration. Facilitators included communication (e.g., open communication), factors specific to patient-partners (e.g., motivation), and factors such as respect and trust. At the Network level, patient-partners and researchers indicated that time constraints and asking too much of patient-partners were barriers to engagement. Both patient-partners and researchers indicated that communication (e.g., regular contacts) facilitated their engagement in the Network. Patient-partners also reported that researchers' characteristics (e.g., openness to feedback) and having a role within the Network facilitated their engagement. Researchers related that providing a variety of activities and establishing meaningful collaborations served as facilitators. In terms of impacts, study participants indicated that POR allowed for: (1) projects to be better aligned with patient-partners' priorities, (2) collaboration among researchers, patient-partners and families, (3) knowledge translation informed by patient-partner input, and (4) learning opportunities. CONCLUSION: Our findings provide evidence of the positive impacts of patient engagement and highlight factors that are important to consider in supporting engagement in large research teams or networks. Based on these findings and in collaboration with patient-partners, we have identified strategies for enhancing authentic engagement of patient-partners in these contexts.
This qualitative research paper seeks to understand patient engagement in large teams and networks. Patient engagement is the meaningful and active partnership of patients on a research team. We aim to understand the factors needed in a research environment that consider and include patients. Patient engagement was measured through interviews with 25 CHILD-BRIGHT Network members, either patient-partners or researchers, about their experiences. In this study, patient-partners were the parents of youth affected by brain-based disorders. We identified factors that made it easier or more difficult for patient-partners to engage with the projects and the network. Additionally, we looked at the impacts of patient engagement as observed by the interviewees. We found that at the project level and network level, the factors that helped engagement and made it difficult to engage were similar for both patient-partners and researchers. At the project level for example, open communication and factors specific to patient-partners (e.g., motivation to contribute) were identified by patient-partners and researchers as helping engagement. Maintaining long-term engagement and ensuring meaningful collaboration were identified as factors that make engagement difficult. At the network level, both patient-partners and researchers noted that communication (e.g., regular follow-cup) made it easier to engage while time constraints and asking too much from patient-partners made engagement more difficult. Finally, interviewees shared that patient engagement impacted patient-partners, researchers, and the research being conducted. Patient engagement helped ensure that the research reflected patient-partners' priorities, allowed collaboration, and provided patient-partners and researchers with learning opportunities. The results of our research have allowed us to identify strategies that can be used to create more meaningful engagement within large research teams.