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1.
Int J Public Health ; 69: 1607428, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-39280904

RESUMO

Objectives: To establish a consensus for evaluating second victims (SV) support interventions to facilitate comparison over time and across different organizations. Methods: A three-phase qualitative study was conducted from June 2023 to March 2024. This consensus approach engaged members of the European Researchers Network Working on Second Victims. A nominal group technique and insights from a scoping review were used to create a questionnaire for Delphi Rounds. Indicators were rated 1-5, aiming for agreement if over 70% of participants rated an indicator as feasible and sensitive with scores above 4, followed by a consensus conference. Results: From an initial set of 113 indicators, 59 were assessed online, with 35 advancing to the Delphi rounds. Two Delphi rounds were conducted, achieving response rates of over 60% and 80% respectively, resulting in consensus on 11 indicators for evaluating SV support programs. These indicators encompass awareness and activation, outcomes of SV support programs, as well as training offered by the institution. Conclusion: This study presents a scoreboard for designing and monitoring SV support programs, as well as measuring standardized outcomes in future research.


Assuntos
Consenso , Técnica Delphi , Humanos , Pesquisa Qualitativa , Avaliação de Programas e Projetos de Saúde , Inquéritos e Questionários , Vítimas de Crime
2.
Conserv Biol ; 38(5): e14357, 2024 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-39248756

RESUMO

Managing invasive species is crucial to mitigate their negative impacts on ecosystems, yet conflicts may arise when their social benefits are disregarded. Human pressure on the endemic-rich forests of São Tomé has been high since the island was discovered by the Portuguese in the 15th century, and numerous species have been introduced. These include the invasive West African giant land snail (Archachatina marginata), which was introduced in the mid-20th century, is now widespread on the island, and is a potential threat to native flora and fauna. We assessed the frequency of consumption of this species and its socioeconomic importance to people across the island with household questionnaires, focus group discussions, and semistructured interviews. We explored the prevalence and potential drivers of use (e.g., wealth, household composition, and diversity of occupations) and characterized the commodity chain to identify demographic groups linked to the snail trade. We interviewed 672 people (1 person per household), conducted 6 focus groups, and interviewed 80 key actors belonging to 5 subcategories. The snail was the most widely consumed bushmeat and an important source of income, particularly for women and unemployed youth. Insecure and scarce livelihood alternatives, mostly in rural areas, were reported as drivers for trade involvement. Snail harvesting was more frequent in poorer households with low occupational diversity. Selling tended to occur in households that were well-established in the community and had a higher proportion of children. Both were stimulated by the proximity of communities to the native forest. Buying snails was common in all demographic groups, but it was linked to wealth and occupational diversity. Interventions to manage the impact of this introduced species on the valuable ecosystems of the island should involve multiple sectors of society to ensure societal support. This requires robust consideration of the welfare of vulnerable demographic groups that benefit from the species.


Importancia socioeconómica y comercial de un caracol invasor en la isla rica en endemismos de Santo Tomé, África Central Resumen La gestión de las especies invasoras es crucial para mitigar sus efectos negativos en los ecosistemas, aunque pueden surgir conflictos cuando no se tienen en cuenta sus beneficios sociales. La presión humana sobre los bosques de Santo Tomé, ricos en endemismos, ha sido alta desde que la isla fue colonizada por los portugueses en el siglo XV y desde entonces se han introducido numerosas especies. Una de ellas es el caracol terrestre gigante de África Occidental (Archachatina marginata), introducido a mediados del siglo XX y que ahora tiene una distribución amplia en la isla y es una amenaza potencial para la flora y la fauna autóctonas al ser invasor. Evaluamos la frecuencia de consumo de esta especie y su importancia socioeconómica para la población de toda la isla mediante encuestas en hogares, grupos de discusión y entrevistas semiestructuradas a actores clave de cinco categorías. Exploramos la prevalencia y los posibles factores impulsores del consumo (por ejemplo, la riqueza, la composición de los hogares y la diversidad de ocupaciones) y caracterizamos la cadena comercial para identificar los grupos demográficos vinculados al comercio de caracoles. Entrevistamos a 672 personas (una persona por hogar), realizamos seis grupos de discusión y entrevistamos a 80 actores clave. El caracol fue la carne de caza más consumida y una importante fuente de ingresos, sobre todo para las mujeres y los jóvenes desempleados. La inseguridad y la escasez de medios de subsistencia, sobre todo en las zonas rurales, fueron los factores que impulsaron la participación en el mercado. La colecta de caracoles fue más frecuente en los hogares más pobres y con escasa diversidad ocupacional. La venta tendía a producirse en hogares bien establecidos en la comunidad y con una mayor proporción de niños. Ambos factores se vieron estimulados por la proximidad de las comunidades al bosque nativo. La compra de caracoles fue común en todos los grupos demográficos, pero estuvo vinculada a la riqueza y a la diversidad ocupacional. Las intervenciones para gestionar el impacto de esta especie introducida en los valiosos ecosistemas de la isla deben implicar a múltiples sectores de la sociedad para garantizar su apoyo. Para ello es necesario tener muy en cuenta el bienestar de los grupos demográficos vulnerables que se benefician de la especie.


Assuntos
Conservação dos Recursos Naturais , Espécies Introduzidas , Caramujos , Fatores Socioeconômicos , Animais , Caramujos/fisiologia , Humanos , Comércio , Feminino , Masculino , Adulto , Pessoa de Meia-Idade , África Central , Ilhas , Adolescente , Adulto Jovem
4.
Geroscience ; 2024 Aug 07.
Artigo em Inglês | MEDLINE | ID: mdl-39110325

RESUMO

Identifying and validating a biomarker with high specificity in early-stage dementia with Lewy bodies (DLB) using a feasible method is crucial to enhance the current suboptimal diagnostic procedure. Previous research revealed abnormalities, including hypoperfusion in the right anterior insular cortex at group level, in prodromal DLB. Exploring hypoperfusion of the right anterior insula, at an individual-level and assessing its relevance as a potential imaging biomarker in early DLB, has, to our knowledge, not been investigated. Our preliminary study aims to assess the feasibility of the technique and to provide a methodological framework for further investigation. We assessed the feasibility and accuracy of the hypoperfusion of the right anterior insula per arterial spin labelling magnetic resonance imaging (ASL-MRI) as a diagnostic biomarker in early DLB and provided rough estimates of its sensitivity and specificity. Defining the region of interest based on previous research, we established the biomarker as the hypoperfusion of the right anterior insula. Discriminative and analytical performances were assessed in comparison to a control group of treatment-resistant depression patients. Bayesian diagnostic reasoning was employed to assess the biomarker diagnostic usability in early DLB in two scenarios: healthy elderly controls and mild cognitive impairment. Additionally, we updated probabilities by integrating data from the Mayo-clinic cognitive fluctuations scale and real-time quaking-induced conversion (RT-QuIC) α-synuclein data. Lastly, a whole-brain perfusion analysis of DLB patients was conducted to identify further brain regions with discriminative abilities. We successfully replicated the right anterior insular hypoperfusion (RAI-Hypo) in all DLB patients at the individual level. The overall sensitivity of the biomarker was 96%, and the specificity was 92%. Bayesian testing revealed the biomarker's highest performance in early-stage DLB with cognitive fluctuations, showcasing a diagnostic potential associated with a high precision and moderate accuracy. In a cognitively non-impaired population, the RAI-Hypo showed a limited usability and lacked in selectivity to qualify as a screening tool. The exploratory whole-brain analysis revealed perfect discriminative capacities in the bilateral anterior insulae and the left inferior parietal lobule. Further studies are needed to confirm our preliminary results. If performance is maintained in subsequent studies and is compared to a more suitable control population, the proposed biomarker may be eventually sufficient to discriminate early-stage DLB from non-DLB.

5.
Brain Commun ; 6(4): fcae272, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-39210911

RESUMO

Although deficits in learning and retrieving new information are well characterized in dementia with Lewy bodies, autobiographical memory has never been explored in this disease. Yet, autobiographical memory impairments are a pervasive feature of dementia, well characterized in other neurodegenerative diseases. Moreover, autobiographical memory corresponds to an extension over time of the self, which we hypothesize is altered in dementia with Lewy bodies and impairment of which could be linked to the insular atrophy occurring from an early stage of the disease. In this study, we sought to characterize autobiographical memory impairments and explore their neural correlates in dementia with Lewy bodies, on the assumption that insular damage could impact the self, including its most elaborate components, such as autobiographical memory. Twenty patients with prodromal to mild dementia with Lewy bodies were selected to participate in this exploratory study along with 20 healthy control subjects. The Autobiographical Interview was used to assess autobiographical memory. Performances were compared between patients and control subjects, and an analysis across life periods and recall conditions was performed. 3D magnetic resonance images were acquired for all participants, and correlational analyses were performed in the patient group using voxel-based morphometry. The behavioural results of the Autobiographical Interview showed that autobiographical memory performances were significantly impaired in dementia with Lewy body patients compared to control subjects in a temporally ungraded manner, for both the free recall and the specific probe conditions (P < 0.0001), though with greater improvement after probing in the patient group. Furthermore, autobiographical memory impairments were correlated with grey matter volume within right insular cortex, temporoparietal junction, precuneus, putamen, left temporal cortex, bilateral parahippocampus and cerebellum, using a threshold of P = 0.005 uncorrected. The behavioural results confirm the existence of temporally ungraded autobiographical memory impairments in dementia with Lewy bodies, from the early stage of the disease. As we expected, neuroimaging analysis revealed a role for the insula and the precuneus in autobiographical memory retrieval, two regions associated with elementary aspects of the self, among other brain regions classically associated with autobiographical memory, such as medial temporal lobe and temporoparietal junction. Our findings provide important insights regarding the involvement of the insula in the self and suggest that insular damage could lead to a global collapse of the self, including its more elaborated components, such as autobiographical memory.

6.
JMIR Form Res ; 8: e58727, 2024 Aug 30.
Artigo em Inglês | MEDLINE | ID: mdl-39213524

RESUMO

BACKGROUND: Health care workers (HCWs) are often impacted by distressing situations during patient care and can experience the second victim phenomenon (SVP). Addressing an adequate response, training, and increasing awareness of the SVP can increase HCWs' well-being and ultimately improve the quality of care and patient safety. OBJECTIVE: This study aims to describe and evaluate a multimodal training organized by the European Researchers' Network Working on Second Victims to increase knowledge and overall awareness of SVP and second victim programs. METHODS: We implemented a multimodal training program, following an iterative approach based on a continuous quality improvement process, to enhance the methodology and materials of the training program over the duration of 2 years. We conducted web-based surveys and group interviews to evaluate the scope and design of the training, self-directed learning materials, and face-to-face activities. RESULTS: Out of 42 accepted candidates, 38 (90%) participants attended the 2 editions of the Training School program. In the second edition, the level of participants' satisfaction increased, particularly when adjusting the allocated time for the case studies' discussion (P<.001). After the multimodal training, participants stated that they had a better awareness and understanding of the SVP, support interventions, and its impact on health care. The main strengths of this Training School were the interdisciplinary approach as well as the contact with multiple cultures, the diversity of learning materials, and the commitment of the trainers and organizing team. CONCLUSIONS: This multimodal training is suitable for different stakeholders of the health care community, including HCWs, clinical managers, patient safety and quality-of-care teams, academicians, researchers, and postgraduate students, regardless of their prior experience with SVP. Furthermore, this study represents a pioneering effort in elucidating the materials and methodology essential for extending this training approach to similar contexts.


Assuntos
Pessoal de Saúde , Humanos , Europa (Continente) , Pessoal de Saúde/educação , Avaliação de Programas e Projetos de Saúde , Pesquisadores/educação , Pesquisadores/psicologia , Inquéritos e Questionários
7.
J Thorac Dis ; 16(6): 3844-3853, 2024 Jun 30.
Artigo em Inglês | MEDLINE | ID: mdl-38983144

RESUMO

Background: Surgical resection is the primary treatment for early-stage lung cancer, but little is known about the outcomes that truly matter to patients. This aim of our study was to identify the aspects of postoperative outcomes that matter most to patients undergoing lung cancer surgery and explore the influence of clinical and demographic factors on their importance ratings. Methods: We performed a cross-sectional study of patients undergoing lung resection for non-small cell lung cancer at our institution from November 2021 to May 2022. Patients were surveyed using a self-developed questionnaire and the European Organisation for Research and Treatment of Cancer core health-related quality of life questionnaire (EORTC QLQ-C30) prior to surgery. Ordinal logistic regression was performed to determine associations between individual patient factors and outcome importance ratings. Results: Forty patients completed the survey during the study period. Patients prioritized oncologic outcomes, with 95% rating R0 resection and cancer recurrence as "very important". Other important factors included overall survival (90%), postoperative complications (e.g., myocardial infarction: 92.5%, infection: 87.5%), and the need for reoperation (82.5%). Health-related quality of life factors, such as chronic pain (77.5%) and the ability to return to normal physical and exercise levels (75%), were also highly valued. Certain patient clinical and demographic factors demonstrated significant associations with importance placed on certain outcomes. Preoperative health-related quality of life scores did not influence outcome importance ratings. Conclusions: This study provides insights into the outcomes that matter most to patients undergoing lung cancer surgery. Oncologic outcomes and postoperative complications were prioritized, while scar-related factors were less important. Patient preferences varied based on demographic and clinical factors. Understanding these preferences can enhance shared decision-making and improve patient-centered care in thoracic surgical oncology.

8.
Alzheimers Res Ther ; 16(1): 170, 2024 Jul 30.
Artigo em Inglês | MEDLINE | ID: mdl-39080741

RESUMO

BACKGROUND: Dementia with Lewy Bodies (DLB) is responsible for cognitive-behavioural disorders but also for gait disorders. The latter are thought to be related to parkinsonism, but the neural bases of these disorders are not well known, especially in the early stages. The aim of this study was to investigate by volumetric Magnetic Resonance Imaging the neuronal basis of gait disorders in DLB patients, compared to Healthy Elderly Controls and Alzheimer's Disease patients. METHODS: Clinical examination with motor assessment including 10-meter walking speed, one-leg balance and Timed Up and Go test, a comprehensive neuropsychological evaluation and 3D brain Magnetic Resonance Imaging were performed on 84 DLB patients, 39 Alzheimer's Disease patients and 22 Healthy Elderly Controls. We used Statistical Parametric Mapping 12 to perform a one-sample t-test to investigate the correlation between each gait score and gray matter volume (P ≤ 0.05 corrected for family-wise error). RESULTS: We found a correlation for DLB patients between walking speed and gray matter decrease (P < 0.05, corrected for family-wise error) in caudate nuclei, anterior cingulate cortex, mid-cingulate cortex, hippocampi, supplementary motor area, right cerebellar cortex and left parietal operculum. We found no correlation with Timed Up and Go test and one-leg balance. CONCLUSION: Gait disorders are underpinned by certain classical regions such as the cerebellum and the supplementary motor area. Our results suggest there may be a motivational and emotional component of voluntary gait in DLB subjects, underpinned by the cingulate cortex, a spatial orientation component, underpinned by hippocampi and suggest the involvement of brain processing speed and parkinsonism, underpinned by the caudate nuclei. TRIAL REGISTRATION: The study protocol has been registered on ClinicalTrials.gov. (NCT01876459) on June 12, 2013.


Assuntos
Encéfalo , Doença por Corpos de Lewy , Imageamento por Ressonância Magnética , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Doença de Alzheimer/diagnóstico por imagem , Doença de Alzheimer/fisiopatologia , Doença de Alzheimer/patologia , Encéfalo/diagnóstico por imagem , Encéfalo/fisiopatologia , Encéfalo/patologia , Estudos Transversais , Marcha/fisiologia , Transtornos Neurológicos da Marcha/etiologia , Transtornos Neurológicos da Marcha/fisiopatologia , Transtornos Neurológicos da Marcha/diagnóstico por imagem , Substância Cinzenta/diagnóstico por imagem , Substância Cinzenta/patologia , Doença por Corpos de Lewy/diagnóstico por imagem , Doença por Corpos de Lewy/fisiopatologia , Doença por Corpos de Lewy/patologia , Testes Neuropsicológicos
9.
PLoS One ; 19(6): e0304159, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38870215

RESUMO

INTRODUCTION: Adverse events in health care affect 8% to 12% of patients admitted to hospitals in the European Union (EU), with surgical adverse events being the most common types reported. AIM: SAFEST project aims to enhance perioperative care quality and patient safety by establishing and implementing widely supported evidence-based perioperative patient safety practices to reduce surgical adverse events. METHODS: We will conduct a mixed-methods hybrid type III implementation study supporting the development and adoption of evidence-based practices through a Quality Improvement Learning Collaborative (QILC) in co-creation with stakeholders. The project will be conducted in 10 hospitals and related healthcare facilities of 5 European countries. We will assess the level of adherence to the standardised practices, as well as surgical complications incidence, patient-reported outcomes, contextual factors influencing the implementation of the patient safety practices, and sustainability. The project will consist of six components: 1) Development of patient safety standardised practices in perioperative care; 2) Guided self-evaluation of the standardised practices; 3) Identification of priorities and actions plans; 4) Implementation of a QILC strategy; 5) Evaluation of the strategy effectiveness; 6) Patient empowerment for patient safety. Sustainability of the project will be ensured by systematic assessment of sustainability factors and business plans. Towards the end of the project, a call for participation will be launched to allow other hospitals to conduct the self-evaluation of the standardized practices. DISCUSSION: The SAFEST project will promote patient safety standardized practices in the continuum of care for adult patients undergoing surgery. This project will result in a broad implementation of evidence-based practices for perioperative care, spanning from the care provided before hospital admission to post-operative recovery at home or outpatient facilities. Different implementation challenges will be faced in the application of the evidence-based practices, which will be mitigated by developing context-specific implementation strategies. Results will be disseminated in peer-reviewed publications and will be available in an online platform.


Assuntos
Segurança do Paciente , Assistência Perioperatória , Melhoria de Qualidade , Humanos , Assistência Perioperatória/normas , Segurança do Paciente/normas , Complicações Pós-Operatórias/prevenção & controle , Complicações Pós-Operatórias/epidemiologia , Europa (Continente)
10.
Int J Biol Macromol ; 274(Pt 2): 133048, 2024 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-38857734

RESUMO

Epiisopiloturine (EPI) is a compound found in jaborandi leaves with antiparasitic activity, which can be enhanced when incorporated into nanoparticles (NP). Cashew Gum (CG), modified by carboxymethylation, is used to produce polymeric nanomaterials with biological activity. In this study, we investigated the antimicrobial potential of carboxymethylated CG (CCG) NP containing EPI (NPCCGE) and without the alkaloid (NPCCG) against bacteria and parasites of the genus Leishmania. We conducted theoretical studies, carboxymethylated CG, synthesized NP by nanoprecipitation, characterized them, and tested them in vitro. Theoretical studies confirmed the stability of modified carbohydrates and showed that the EPI-4A30 complex had the best interaction energy (-8.47 kcal/mol). CCG was confirmed by FT-IR and presented DSabs of 0.23. NPCCG and NPCCGE had average sizes of 221.94 ± 144.086 nm and 247.36 ± 3.827 nm, respectively, with homogeneous distribution and uniform surfaces. No NP showed antibacterial activity or cytotoxicity to macrophages. NPCCGE demonstrated antileishmanial activity against L. amazonensis, both in promastigote forms (IC50 = 9.52 µg/mL, SI = 42.01) and axenic amastigote forms (EC50 = 6.6 µg/mL, SI = 60.60). The results suggest that nanostructuring EPI in CCG enhances its antileishmanial activity.


Assuntos
Anacardium , Anti-Infecciosos , Nanopartículas , Gomas Vegetais , Anacardium/química , Nanopartículas/química , Gomas Vegetais/química , Anti-Infecciosos/farmacologia , Anti-Infecciosos/química , Animais , Camundongos , Leishmania/efeitos dos fármacos , Simulação por Computador , Imidazóis , 4-Butirolactona/análogos & derivados
11.
Chem Biol Interact ; 398: 111115, 2024 Aug 01.
Artigo em Inglês | MEDLINE | ID: mdl-38908811

RESUMO

In the present study, the effect of sulfonamide-chalcone 185 (SSC185) was investigated against B16-F10 metastatic melanoma cells aggressive actions, besides migration and adhesion processes, by in silico and in vitro assays. In silico studies were used to characterize the pharmacokinetic profile and possible targets of SSC185, using the pkCSM web server, and docking simulations with AutoDock Tools. Furthermore, the antimetastatic effect of SSC185 was investigated by in vitro experiments using MTT (3-(4,5-Dimethylthiazol-2-yl)-2,5-Diphenyltetrazolium Bromide), colony, scratch, and cell adhesion assays, and atomic force microscopy (AFM). The molecular docking results show better affinity of SSC185 with the metalloproteinases-2 (MMP-2) and α5ß1 integrin. SSC185 effectively restricts the formation of colonies, migration, and adhesion of B16-F10 metastatic melanoma cells. Through the AFM images changes in cells morphology was identified, with a decrease in the filopodia and increase in the average cellular roughness. The results obtained demonstrate the potential of this molecule in inhibit the primordial steps for metastasis, which is responsible for a worse prognosis of late stage cancer, being the main cause of morbidity among cancer patients.


Assuntos
Adesão Celular , Movimento Celular , Chalcona , Simulação de Acoplamento Molecular , Sulfonamidas , Movimento Celular/efeitos dos fármacos , Adesão Celular/efeitos dos fármacos , Sulfonamidas/farmacologia , Sulfonamidas/química , Camundongos , Animais , Linhagem Celular Tumoral , Chalcona/farmacologia , Chalcona/química , Chalcona/análogos & derivados , Metaloproteinase 2 da Matriz/metabolismo , Melanoma Experimental/patologia , Melanoma Experimental/tratamento farmacológico , Melanoma Experimental/metabolismo , Microscopia de Força Atômica , Antineoplásicos/farmacologia , Antineoplásicos/química , Chalconas/farmacologia , Chalconas/química , Humanos
12.
Sci Rep ; 14(1): 10742, 2024 05 10.
Artigo em Inglês | MEDLINE | ID: mdl-38730249

RESUMO

The selection pressure imposed by the host immune system impacts on hepatitis B virus (HBV) variability. This study evaluates HBV genetic diversity, nucleos(t)ide analogs resistance and HBsAg escape mutations in HBV patients under distinct selective pressures. One hundred and thirteen individuals in different phases of HBV infection were included: 13 HBeAg-positive chronic infection, 9 HBeAg-positive chronic hepatitis, 47 HBeAg-negative chronic infection (ENI), 29 HBeAg-negative chronic hepatitis (ENH) and 15 acute infected individuals. Samples were PCR amplified, sequenced and genetically analyzed for the overlapping POL/S genes. Most HBV carriers presented genotype A (84/113; 74.3%), subgenotype A1 (67/84; 79.7%), irrespective of group, followed by genotypes D (20/113; 17.7%), F (8/113; 7.1%) and E (1/113; 0.9%). Clinically relevant mutations in polymerase (tL180M/M204V) and in the Major Hydrophilic Region of HBsAg (sY100C, T118A/M, sM133T, sD144A and sG145R) were observed. Our findings, however, indicated that most polymorphic sites were located in the cytosolic loops (CYL1-2) and transmembrane domain 4 (TMD4) of HBsAg. Lower viral loads and higher HBV genetic diversity were observed in ENI and ENH groups (p < 0.001), suggesting that these groups are subjected to a higher selective pressure. Our results provide information on the molecular characteristics of HBV in a diverse clinical setting, and may guide future studies on the balance of HBV quasispecies at different stages of infection.


Assuntos
Variação Genética , Genótipo , Antígenos de Superfície da Hepatite B , Vírus da Hepatite B , Hepatite B Crônica , Humanos , Vírus da Hepatite B/genética , Hepatite B Crônica/virologia , Hepatite B Crônica/genética , Brasil/epidemiologia , Masculino , Adulto , Feminino , Pessoa de Meia-Idade , Antígenos de Superfície da Hepatite B/genética , Mutação , Farmacorresistência Viral/genética , DNA Viral/genética , Adulto Jovem , Filogenia , Antígenos E da Hepatite B/genética
13.
bioRxiv ; 2024 May 01.
Artigo em Inglês | MEDLINE | ID: mdl-38746371

RESUMO

Clinical research emphasizes the implementation of rigorous and reproducible study designs that rely on between-group matching or controlling for sources of biological variation such as subject's sex and age. However, corrections for body size (i.e. height and weight) are mostly lacking in clinical neuroimaging designs. This study investigates the importance of body size parameters in their relationship with spinal cord (SC) and brain magnetic resonance imaging (MRI) metrics. Data were derived from a cosmopolitan population of 267 healthy human adults (age 30.1±6.6 years old, 125 females). We show that body height correlated strongly or moderately with brain gray matter (GM) volume, cortical GM volume, total cerebellar volume, brainstem volume, and cross-sectional area (CSA) of cervical SC white matter (CSA-WM; 0.44≤r≤0.62). In comparison, age correlated weakly with cortical GM volume, precentral GM volume, and cortical thickness (-0.21≥r≥-0.27). Body weight correlated weakly with magnetization transfer ratio in the SC WM, dorsal columns, and lateral corticospinal tracts (-0.20≥r≥-0.23). Body weight further correlated weakly with the mean diffusivity derived from diffusion tensor imaging (DTI) in SC WM (r=-0.20) and dorsal columns (-0.21), but only in males. CSA-WM correlated strongly or moderately with brain volumes (0.39≤r≤0.64), and weakly with precentral gyrus thickness and DTI-based fractional anisotropy in SC dorsal columns and SC lateral corticospinal tracts (-0.22≥r≥-0.25). Linear mixture of sex and age explained 26±10% of data variance in brain volumetry and SC CSA. The amount of explained variance increased at 33±11% when body height was added into the mixture model. Age itself explained only 2±2% of such variance. In conclusion, body size is a significant biological variable. Along with sex and age, body size should therefore be included as a mandatory variable in the design of clinical neuroimaging studies examining SC and brain structure.

14.
Geroscience ; 2024 May 15.
Artigo em Inglês | MEDLINE | ID: mdl-38750385

RESUMO

Dementia with Lewy bodies (DLB) and Alzheimer's disease (AD) are often associated with depressive symptoms from the prodromal stage. The aim of the present study was to investigate the neuroanatomical correlates of depression in prodromal to mild DLB patients compared with AD patients. Eighty-three DLB patients, 37 AD patients, and 18 healthy volunteers were enrolled in this study. Depression was evaluated with the Mini International Neuropsychiatric Interview (MINI), French version 5.0.0. T1-weighted three-dimensional anatomical images were acquired for all participants. Regression and comparison analyses were conducted using a whole-brain voxel-based morphometry (VBM) approach on the grey matter volume (GMV). DLB patients presented a significantly higher mean MINI score than AD patients (p = 0.004), 30.1% of DLB patients had clinical depression, and 56.6% had a history of depression, while 0% of AD patients had clinical depression and 29.7% had a history of depression. VBM regression analyses revealed negative correlations between the MINI score and the GMV of right prefrontal regions in DLB patients (p < 0.001, uncorrected). Comparison analyses between DLB patients taking and those not taking an antidepressant mainly highlighted a decreased GMV in the bilateral middle/inferior temporal gyrus (p < 0.001, uncorrected) in treated DLB patients. In line with the literature, our behavioral analyses revealed higher depression scores in DLB patients than in AD patients. We also showed that depressive symptoms in DLB are associated with decreased GMV in right prefrontal regions. Treated DLB patients with long-standing depression would be more likely to experience GMV loss in the bilateral middle/inferior temporal cortex. These findings should be taken into account when managing DLB patients.

15.
Health Res Policy Syst ; 22(1): 61, 2024 May 27.
Artigo em Inglês | MEDLINE | ID: mdl-38802932

RESUMO

BACKGROUND: Decentralization of a health system is a complex and multidimensional phenomenon that demands thorough investigation of its process logistics, predisposing factors and implementation mechanisms, within the broader socio-political environment of each nation. Despite its wide adoption across both high-income countries (HICs) and low-and-middle-income countries (LMICs), empirical evidence of whether decentralization actually translates into improved health system performance remains inconclusive and controversial. This paper aims to provide a comprehensive description of the decentralization processes in three countries at different stages of their decentralization strategies - Pakistan, Brazil and Portugal. MAIN BODY: This study employed a systematic analysis of peer-reviewed academic journals, official government reports, policy documents and publications from international organizations related to health system decentralization. A comprehensive search was conducted using reputable databases such as PubMed, Google Scholar, the WHO repository and other relevant databases, covering the period up to the knowledge cutoff date in June 2023. Information was systematically extracted and organized into the determinants, process mechanics and challenges encountered during the planning, implementation and post-decentralization phases. Although decentralization reforms have achieved some success, challenges persist in their implementation. Comparing all three countries, it was evident that all three have prioritized health in their decentralization reforms and aimed to enhance local decision-making power. Brazil has made significant progress in implementing decentralization reforms, while Portugal and Pakistan are still in the process. Pakistan has faced significant implementation challenges, including capacity-building, resource allocation, resistance to change and inequity in access to care. Brazil and Portugal have also faced challenges, but to a lesser extent. The extent, progress and challenges in the decentralization processes vary among the three countries, each requiring ongoing evaluation and improvement to achieve the desired outcomes. CONCLUSION: Notable differences exist in the extent of decentralization, the challenges faced during implementation and inequality in access to care between the three countries. It is important for Portugal, Brazil and Pakistan to address these through reinforcing implementation strategies, tackling inequalities in access to care and enhancing monitoring and evaluation mechanism. Additionally, fostering knowledge sharing among these different countries will be instrumental in facilitating mutual learning.


Assuntos
Atenção à Saúde , Reforma dos Serviços de Saúde , Política de Saúde , Política , Humanos , Brasil , Atenção à Saúde/organização & administração , Países em Desenvolvimento , Reforma dos Serviços de Saúde/organização & administração , Paquistão , Portugal
16.
BMC Med Educ ; 24(1): 378, 2024 Apr 08.
Artigo em Inglês | MEDLINE | ID: mdl-38589877

RESUMO

BACKGROUND: When healthcare students witness, engage in, or are involved in an adverse event, it often leads to a second victim experience, impacting their mental well-being and influencing their future professional practice. This study aimed to describe the efforts, methods, and outcomes of interventions to help students in healthcare disciplines cope with the emotional experience of being involved in or witnessing a mistake causing harm to a patient during their clerkships or training. METHODS: This systematic review followed the PRISMA guidelines and includes the synthesis of eighteen studies, published in diverse languages from 2011 to 2023, identified from the databases MEDLINE, EMBASE, SCOPUS and APS PsycInfo. PICO method was used for constructing a research question and formulating eligibility criteria. The selection process was conducted through Rayyan. Titles and abstracts of were independently screened by two authors. The critical appraisal tools of the Joanna Briggs Institute was used to assess the risk of bias of the included studies. RESULTS: A total of 1354 studies were retrieved, 18 met the eligibility criteria. Most studies were conducted in the USA. Various educational interventions along with learning how to prevent mistakes, and resilience training were described. In some cases, this experience contributed to the student personal growth. Psychological support in the aftermath of adverse events was scattered. CONCLUSION: Ensuring healthcare students' resilience should be a fundamental part of their training. Interventions to train them to address the second victim phenomenon during their clerkships are scarce, scattered, and do not yield conclusive results on identifying what is most effective and what is not.


Assuntos
Erros Médicos , Humanos , Erros Médicos/prevenção & controle , Adaptação Psicológica , Estudantes de Ciências da Saúde/psicologia , Estágio Clínico , Estudantes de Medicina/psicologia
17.
Alzheimers Res Ther ; 16(1): 85, 2024 04 19.
Artigo em Inglês | MEDLINE | ID: mdl-38641653

RESUMO

BACKGROUND: Dementia with Lewy bodies (DLB) is characterized by insular atrophy, which occurs at the early stage of the disease. Damage to the insula has been associated with disorders reflecting impairments of the most fundamental components of the self, such as anosognosia, which is a frequently reported symptom in patients with Lewy bodies (LB). The purpose of this study was to investigate modifications of the self-concept (SC), another component of the self, and to identify neuroanatomical correlates, in prodromal to mild DLB. METHODS: Twenty patients with prodromal to mild DLB were selected to participate in this exploratory study along with 20 healthy control subjects matched in terms of age, gender, and level of education. The Twenty Statements Test (TST) was used to assess the SC. Behavioral performances were compared between LB patients and control subjects. Three-dimensional magnetic resonance images (MRI) were acquired for all participants and correlational analyses were performed using voxel-based morphometry (VBM) in whole brain and using a mask for the insula. RESULTS: The behavioral results on the TST showed significantly impaired performances in LB patients in comparison with control subjects (p < .0001). Correlational analyses using VBM revealed positive correlations between the TST and grey matter volume within insular cortex, right supplementary motor area, bilateral inferior temporal gyri, right inferior frontal gyrus, and left lingual gyrus, using a threshold of p = .001 uncorrected, including total intracranial volume (TIV), age, and MMSE as nuisance covariates. Additionally, correlational analysis using a mask for the insula revealed positive correlation with grey matter volume within bilateral insular cortex, using a threshold of p = .005. CONCLUSIONS: The behavioral results confirm the existence of SC impairments in LB patients from the prodromal stage of the disease, compared to matched healthy controls. As we expected, VBM analyses revealed involvement of the insula, among that of other brain regions, already known to be involved in other self-components. While this study is exploratory, our findings provide important insights regarding the involvement of the insula within the self, confirming the insula as a core region of the self-networks, including for high-order self-representations such as the SC.


Assuntos
Doença por Corpos de Lewy , Humanos , Doença por Corpos de Lewy/diagnóstico por imagem , Doença por Corpos de Lewy/patologia , Córtex Insular , Encéfalo/patologia , Córtex Cerebral/diagnóstico por imagem , Córtex Cerebral/patologia , Substância Cinzenta/diagnóstico por imagem , Substância Cinzenta/patologia , Imageamento por Ressonância Magnética
18.
Future Microbiol ; 19(6): 495-508, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38629920

RESUMO

Aim: To evaluate the action of promethazine, fluoxetine and carbonyl cyanide 3-chlorophenylhydrazone as efflux pump inhibitors (EPIs) against multidrug-resistant Pseudomonas aeruginosa. Methods: The effect of the compounds was evaluated in planktonic cells and bacterial biofilms. Accumulation tests were performed with ethidium bromide to prove their action as EPIs. Then, they were associated with antimicrobials. Results: Effect on planktonic cells and biofilms was found. Assays with ethidium bromide indicate their action as EPIs. Significant reductions in the metabolic activity of biofilms were observed after the association with the antimicrobials, especially for meropenem. Conclusion: It is possible to prove the action of these compounds as EPIs for P. aeruginosa and demonstrate the relevance of efflux pumps in antimicrobial resistance.


[Box: see text].


Assuntos
Antibacterianos , Biofilmes , Reposicionamento de Medicamentos , Farmacorresistência Bacteriana Múltipla , Testes de Sensibilidade Microbiana , Pseudomonas aeruginosa , Pseudomonas aeruginosa/efeitos dos fármacos , Farmacorresistência Bacteriana Múltipla/efeitos dos fármacos , Antibacterianos/farmacologia , Biofilmes/efeitos dos fármacos , Carbonil Cianeto m-Clorofenil Hidrazona/farmacologia , Prometazina/farmacologia , Proteínas de Membrana Transportadoras/metabolismo , Humanos , Proteínas de Bactérias/metabolismo , Proteínas de Bactérias/antagonistas & inibidores , Infecções por Pseudomonas/tratamento farmacológico , Infecções por Pseudomonas/microbiologia , Hidrazonas
19.
Biosensors (Basel) ; 14(4)2024 Mar 27.
Artigo em Inglês | MEDLINE | ID: mdl-38667152

RESUMO

This work reports on the surface functionalization of a nanomaterial supporting localized surface plasmon resonances (LSPRs) with (synthetic) thiolated oligonucleotide-based biorecognition elements, envisaging the development of selective LSPR-based DNA biosensors. The LSPR thin-film transducers are composed of noble metal nanoparticles (NPs) embedded in a TiO2 dielectric matrix, produced cost-effectively and sustainably by magnetron sputtering. The study focused on the immobilization kinetics of thiolated oligonucleotide probes as biorecognition elements, followed by the evaluation of hybridization events with the target probe. The interaction between the thiolated oligonucleotide probe and the transducer's surface was assessed by monitoring the LSPR signal with successive additions of probe solution through a microfluidic device. The device was specifically designed and fabricated for this work and adapted to a high-resolution LSPR spectroscopy system with portable characteristics. Benefiting from the synergetic characteristics of Ag and Au in the form of bimetallic nanoparticles, the Au-Ag/TiO2 thin film proved to be more sensitive to thiolated oligonucleotide binding events. Despite the successful surface functionalization with the biorecognition element, the detection of complementary oligonucleotides revealed electrostatic repulsion and steric hindrance, which hindered hybridization with the target oligonucleotide. This study points to an effect that is still poorly described in the literature and affects the design of LSPR biosensors based on nanoplasmonic thin films.


Assuntos
Técnicas Biossensoriais , Ouro , Nanopartículas Metálicas , Oligonucleotídeos , Prata , Ressonância de Plasmônio de Superfície , Titânio , Titânio/química , Ouro/química , Prata/química , Nanopartículas Metálicas/química , Oligonucleotídeos/química , Compostos de Sulfidrila/química , DNA , Hibridização de Ácido Nucleico
20.
Cureus ; 16(3): e55461, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38571850

RESUMO

Intestinal malrotation (IM), a rare congenital anomaly disrupting typical embryonic rotation around the superior mesenteric artery, is exceptionally uncommon in adults, with its link to colon cancer being even rarer. This article presents a case of colonic cancer in conjunction with IM in a 63-year-old male. Image studies and intraoperative findings show signs of IM. Open resection was performed due to concerns about vascular anomalies and abnormal lymphatic drainage. The case underscores the rarity of colon cancer in a malrotated gut, highlighting the necessity of preoperative identification for precise surgical planning and emphasizing the importance of careful dissection to prevent inadvertent vascular injury.

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