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1.
Small Methods ; : e2400298, 2024 Jul 17.
Artículo en Inglés | MEDLINE | ID: mdl-39015052

RESUMEN

Cathodic electrochemical intercalation/exfoliation of transition metal dichalcogenides (TMDs) with bulky tetraalkylammonium-based cations is gaining popularity as it avoids the semiconducting (2H) to metallic (1T) phase transformation in TMDs like molybdenum disulfide (MoS2) and, generally, produces sheets with a larger aspect ratio - important for achieving conformal sheet-to-sheet contact in optoelectronic devices. Large single crystals are typically used as the precursor, but these are expensive, often inaccessible, and result in limited quantities of material. In this paper, a 3D-printable electrochemical cell capable of intercalating gram-scale quantities of commercially available TMD powders is presented. By incorporating a reference electrode in the cell and physically restraining the powder with a spring-loaded mechanism, the system can probe the intercalation electrochemistry, for example, determining the onset of intercalation to be near -2.5 V versus the ferrocene redox couple. While the extent of intercalation depends on precursor quantity and reaction time, a high yield of exfoliated product can be obtained exhibiting average aspect ratios as high as 49 ± 44 similar to values obtained by crystal intercalation. The intercalation and exfoliation of a wide variety of pelletized commercial powders including molybdenum diselenide (MoSe2), tungsten diselenide (WSe2), tungsten disulfide (WS2), and graphitic carbon nitride (gCN) are also demonstrated.

2.
Vaccine ; 2024 Jun 04.
Artículo en Inglés | MEDLINE | ID: mdl-38839518

RESUMEN

BACKGROUND: MVA-BN vaccine (Jynneos, Imvamune, Imvanex) was used widely in the 2022 mpox outbreak. This experience provides real-world evidence about the vaccine's safety, particularly regarding intradermal use. METHODS: Bavarian Nordic's global safety database was searched for all adverse events following immunization (AEFIs) with MVA-BN. AEFI numbers were compared among administration routes. Selected events and administered doses were graphed over the mpox outbreak period. RESULTS: A total of 9585 AEFIs have been reported. The rate of myocarditis or pericarditis was <1 per 100,000 doses administered. Eighty-nine cases of syncope, fainting, or loss of consciousness were reported. This number rose after the August 2022 US emergency use authorization for intradermal administration, as did the proportion of all syncope AEFIs reported following intradermal administration (78,7 %). CONCLUSION: Real-world data from large-scale administration of MVA-BN has confirmed the vaccine's established safety profile when administered subcutaneously. Intradermal administration is likely associated with increased syncopal event frequency.

3.
Immun Ageing ; 21(1): 36, 2024 Jun 12.
Artículo en Inglés | MEDLINE | ID: mdl-38867294

RESUMEN

BACKGROUND AND PURPOSE: The immune response changes during aging and the progression of Alzheimer's disease (AD) and related dementia (ADRD). Terminally differentiated effector memory T cells (called TEMRA) are important during aging and AD due to their cytotoxic phenotype and association with cognitive decline. However, it is not clear if the changes seen in TEMRAs are specific to AD-related cognitive decline specifically or are more generally correlated with cognitive decline. This study aimed to examine whether TEMRAs are associated with cognition and plasma biomarkers of AD, neurodegeneration, and neuroinflammation in a community-based cohort of older adults. METHODS: Study participants from a University of Kentucky Alzheimer's Disease Research Center (UK-ADRC) community-based cohort of aging and dementia were used to test our hypothesis. There were 84 participants, 44 women and 40 men. Participants underwent physical examination, neurological examination, medical history, cognitive testing, and blood collection to determine plasma biomarker levels (Aß42/Aß40 ratio, total tau, Neurofilament Light chain (Nf-L), Glial Fibrillary Acidic Protein (GFAP)) and to isolate peripheral blood mononuclear cells (PBMCs). Flow cytometry was used to analyze PBMCs from study participants for effector and memory T cell populations, including CD4+ and CD8+ central memory T cells (TCM), Naïve T cells, effector memory T cells (TEM), and effector memory CD45RA+ T cells (TEMRA) immune cell markers. RESULTS: CD8+ TEMRAs were positively correlated with Nf-L and GFAP. We found no significant difference in CD8+ TEMRAs based on cognitive scores and no associations between CD8+ TEMRAs and AD-related biomarkers. CD4+ TEMRAs were associated with cognitive impairment on the MMSE. Gender was not associated with TEMRAs, but it did show an association with other T cell populations. CONCLUSION: These findings suggest that the accumulation of CD8+ TEMRAs may be a response to neuronal injury (Nf-L) and neuroinflammation (GFAP) during aging or the progression of AD and ADRD. As our findings in a community-based cohort were not clinically-defined AD participants but included all ADRDs, this suggests that TEMRAs may be associated with changes in systemic immune T cell subsets associated with the onset of pathology.

4.
Plant Mol Biol ; 114(3): 38, 2024 Apr 11.
Artículo en Inglés | MEDLINE | ID: mdl-38605193

RESUMEN

The cell wall (CW) is the dynamic structure of a plant cell, acting as a barrier against biotic and abiotic stresses. In grape berries, the modifications of pulp and skin CW during softening ensure flexibility during cell expansion and determine the final berry texture. In addition, the CW of grape berry skin is of fundamental importance for winemaking, controlling secondary metabolite extractability. Grapevine varieties with contrasting CW characteristics generally respond differently to biotic and abiotic stresses. In the context of climate change, it is important to investigate the CW dynamics occurring upon different stresses, to define new adaptation strategies. This review summarizes the molecular mechanisms underlying CW modifications during grapevine berry fruit ripening, plant-pathogen interaction, or in response to environmental stresses, also considering the most recently published transcriptomic data. Furthermore, perspectives of new biotechnological approaches aiming at modifying the CW properties based on other crops' examples are also presented.


Asunto(s)
Frutas , Vitis , Frutas/genética , Frutas/metabolismo , Vitis/genética , Vitis/metabolismo , Perfilación de la Expresión Génica , Pared Celular/metabolismo , Estrés Fisiológico
5.
Sci Total Environ ; 915: 170099, 2024 Mar 10.
Artículo en Inglés | MEDLINE | ID: mdl-38224889

RESUMEN

Despite the skyrocketing growth in recent decades of environmental studies on ports and shipping, their local health impacts remain largely under-researched. This article tackles this gap in research by statistically analyzing data on global shipping flows across nearly 5000 ports in 35 OECD countries between 2001 and 2018. The different traffic types, from containers to bulk and passengers, are analyzed jointly with data on natural conditions, air pollution, socio-economic indicators, and public health. The principal results show that port regions pollute more than non-port regions on average, while health impacts vary according to the size and specialization of the port region. Three types of port regions are clearly differentiated: industrial, intermediate, and metropolitan port regions.


Asunto(s)
Contaminación del Aire , Salud Pública , Contaminación del Aire/análisis , Navíos , Industrias
6.
Alzheimers Dement ; 20(2): 1374-1386, 2024 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-38011580

RESUMEN

INTRODUCTION: Protein-based plasma assays provide hope for improving accessibility and specificity of molecular diagnostics to diagnose dementia. METHODS: Plasma was obtained from participants (N = 837) in our community-based University of Kentucky Alzheimer's Disease Research Center cohort. We evaluated six Alzheimer's disease (AD)- and neurodegeneration-related (Aß40, Aß42, Aß42/40, p-tau181, total tau, and NfLight) and five inflammatory biomarkers (TNF𝛼, IL6, IL8, IL10, and GFAP) using the SIMOA-based protein assay platform. Statistics were performed to assess correlations. RESULTS: Our large cohort reflects previous plasma biomarker findings. Relationships between biomarkers to understand AD-inflammatory biomarker correlations showed significant associations between AD and inflammatory biomarkers suggesting peripheral inflammatory interactions with increasing AD pathology. Biomarker associations parsed out by clinical diagnosis (normal, MCI, and dementia) reveal changes in strength of the correlations across the cognitive continuum. DISCUSSION: Unique AD-inflammatory biomarker correlations in a community-based cohort reveal a new avenue for utilizing plasma-based biomarkers in the assessment of AD and related dementias. HIGHLIGHTS: Large community cohorts studying sex, age, and APOE genotype effects on biomarkers are few. It is unknown how biomarker-biomarker associations vary through aging and dementia. Six AD (Aß40, Aß42, Aß42/40, p-tau181, total tau, and NfLight) and five inflammatory biomarkers (TNFα, IL6, IL8, IL10, and GFAP) were used to examine associations between biomarkers. Plasma biomarkers suggesting increasing cerebral AD pathology corresponded to increases in peripheral inflammatory markers, both pro-inflammatory and anti-inflammatory. Strength of correlations, between pairs of classic AD and inflammatory plasma biomarker, changes throughout cognitive progression to dementia.


Asunto(s)
Enfermedad de Alzheimer , Disfunción Cognitiva , Humanos , Enfermedad de Alzheimer/patología , Péptidos beta-Amiloides , Interleucina-10 , Interleucina-6 , Interleucina-8 , Proteínas tau , Biomarcadores , Reino Unido
7.
bioRxiv ; 2023 Nov 28.
Artículo en Inglés | MEDLINE | ID: mdl-38077088

RESUMEN

Background and Purpose: The immune response changes during aging and the progression of Alzheimer's disease (AD) and related dementia (ADRD). Terminally differentiated effector memory T cells (called TEMRA) are important during aging and AD due to their cytotoxic phenotype and association with cognitive decline. However, it is not clear if the changes seen in TEMRAs are specific to AD-related cognitive decline specifically or are more generally correlated with cognitive decline. This study aimed to examine whether TEMRAs are associated with cognition and plasma biomarkers of AD, neurodegeneration, and neuroinflammation in a community-based cohort of older adults. Methods: Study participants from a University of Kentucky Alzheimer's Disease Research Center (UK-ADRC) community-based cohort of aging and dementia were used to test our hypothesis. There were 84 participants, 44 women and 40 men. Participants underwent physical examination, neurological examination, medical history, cognitive testing, and blood collection to determine plasma biomarker levels (Aß42/Aß40 ratio, total tau, Neurofilament Light chain (Nf-L), Glial Fibrillary Acidic Protein (GFAP)) and to isolate peripheral blood mononuclear cells (PBMCs). Flow cytometry was used to analyze PBMCs from study participants for effector and memory T cell populations, including CD4+ and CD8+ central memory T cells (TCM), Naïve T cells, effector memory T cells (TEM), and effector memory CD45RA+ T cells (TEMRA) immune cell markers. Results: CD8+ TEMRAs were positively correlated with Nf-L and GFAP. We found no significant difference in CD8+ TEMRAs based on cognitive scores and no associations between CD8+ TEMRAs and AD-related biomarkers. CD4+ TEMRAs were associated with cognitive impairment on the MMSE. Gender was not associated with TEMRAs, but it did show an association with other T cell populations. Conclusion: These findings suggest that the accumulation of CD8+ TEMRAs may be a response to neuronal injury (Nf-L) and neuroinflammation (GFAP) during aging or the progression of AD and ADRD. As our findings in a community-based cohort were not clinically-defined AD participants but included all ADRDs, this suggests that TEMRAs may be associated with changes in systemic immune T cell subsets associated with the onset of pathology.

8.
JCO Oncol Pract ; 19(9): 767-776, 2023 09.
Artículo en Inglés | MEDLINE | ID: mdl-37390380

RESUMEN

PURPOSE: Conversations about personal values and goals of care (GOC) at the end of life are essential in caring for patients with advanced cancer. However, GOC conversations may be influenced by patient and oncologist factors during transitions of care. METHODS: We electronically administered surveys to medical oncologists of inpatients who died from May 1, 2020, to May 31, 2021. Primary outcomes included oncologists' knowledge of inpatient death, anticipation of patient death, and recollection of GOC discussions. Secondary outcomes, including GOC documentation and advance directives (ADs), were collected retrospectively from electronic health records. Outcomes were analyzed for association with patient, oncologist, and patient-oncologist relationship factors. RESULTS: For 75 patients who died, 104/158 (66%) surveys were completed by 40 inpatient and 64 outpatient oncologists. Eighty-one oncologists (77.9%) were aware of patients' deaths, 68 (65.4%) anticipated patients' deaths within 6 months, and 67 (64.4%) recalled having GOC discussions before or during the terminal hospitalization. Outpatient oncologists were more likely to report knowledge of patient death (P < .001), as were those with longer therapeutic relationships (P < .001). Inpatient oncologists were more likely to correctly anticipate patient death (P = .014). Secondary outcomes revealed 21.3% of patients had documented GOC discussions before admission and 33.3% had ADs; patients with a longer duration of cancer diagnosis were more likely to have ADs (P = .003). Oncologist-reported barriers to GOC included unrealistic expectations from patients or family (25%) and decreased patient participation because of clinical conditions (15%). CONCLUSION: Most oncologists recalled having GOC discussions for patients with inpatient mortality, yet documentation of serious illness conversations remained suboptimal. Further studies are needed to examine barriers to GOC conversations and documentation during transitions of care and across health care settings.


Asunto(s)
Pacientes Internos , Neoplasias , Humanos , Objetivos , Estudios Retrospectivos , Neoplasias/terapia , Comunicación
9.
J Infect Dis ; 228(8): 999-1011, 2023 10 18.
Artículo en Inglés | MEDLINE | ID: mdl-37079393

RESUMEN

BACKGROUND: Respiratory syncytial virus (RSV) causes significant disease burden in older adults. MVA-BN-RSV is a novel poxvirus-vectored vaccine encoding internal and external RSV proteins. METHODS: In a phase 2a randomized double-blind, placebo-controlled trial, healthy participants aged 18 to 50 years received MVA-BN-RSV or placebo, then were challenged 4 weeks later with RSV-A Memphis 37b. Viral load was assessed from nasal washes. RSV symptoms were collected. Antibody titers and cellular markers were assessed before and after vaccination and challenge. RESULTS: After receiving MVA-BN-RSV or placebo, 31 and 32 participants, respectively, were challenged. Viral load areas under the curve from nasal washes were lower (P = .017) for MVA-BN-RSV (median = 0.00) than placebo (median = 49.05). Total symptom scores also were lower (median = 2.50 and 27.00, respectively; P = .004). Vaccine efficacy against symptomatic, laboratory-confirmed or culture-confirmed infection was 79.3% to 88.5% (P = .022 and .013). Serum immunoglobulin A and G titers increased approximately 4-fold after MVA-BN-RSV vaccination. Interferon-γ-producing cells increased 4- to 6-fold after MVA-BN-RSV in response to stimulation with the encoded RSV internal antigens. Injection site pain occurred more frequently with MVA-BN-RSV. No serious adverse events were attributed to vaccination. CONCLUSIONS: MVA-BN-RSV vaccination resulted in lower viral load and symptom scores, fewer confirmed infections, and induced humoral and cellular responses. CLINICAL TRIALS REGISTRATION: NCT04752644.


Asunto(s)
Infecciones por Virus Sincitial Respiratorio , Vacunas contra Virus Sincitial Respiratorio , Virus Sincitial Respiratorio Humano , Vacuna contra Viruela , Anciano , Humanos , Anticuerpos Antivirales , Antígenos Virales , Infecciones por Virus Sincitial Respiratorio/prevención & control , Virus Vaccinia
10.
Health Promot Int ; 38(1)2023 Feb 01.
Artículo en Inglés | MEDLINE | ID: mdl-36617296

RESUMEN

Workplace Health Promotion (WHP) interventions proved to be effective in several workplace contexts. Currently, the effectiveness of such interventions in the academic workplace is lacking, albeit evidence suggests similar patterns to those occurring in other workplace sectors. The aim of this study was to review WHP interventions in the university workplace that led to improve health- and work-related outcomes. Articles were selected using Pubmed, Web of Science, Scopus, Embase, PsycInfo, Cinhal and FSTA, using search strings focused on health- and/or work-related outcomes and involving University WHP interventions published between January 2010 and July 2021. The majority of the 12 studies selected reported positive results in their individuality, especially regarding health-related outcomes [biological such as weight loss, physical activity, mental health and lifestyle habits] and work-related outcomes concerning improvements either for the employee or for the working system. Studies on economic advantage and Return on Investment were limited and reported contrasting results. In conclusion, we have highlighted how the studies on effectiveness of WHP interventions in the university context are few and heterogeneous and need to be encouraged further research in order to build specific guidelines that are effective.


Interventions concerning prevention promotion in the workplace, involving activities targeting lifestyle habits, nutrition and/or physical activity as well as general wellbeing, are growing and becoming more common due to their benefits on health and work outcomes. The aim of this review was to investigate the effectiveness of such interventions in the university workplace context to help create directed guidelines for their correct implementation in this setting. Although it was difficult to draw peculiar conclusions due to the heterogeneity of the programs described in the studies, the overall positivity of the results and the perspective university environment, outlook that the implementation of multicomponent and multilevel interventions would improve employees' wellness and favor universities' welfare.


Asunto(s)
Promoción de la Salud , Salud Laboral , Humanos , Universidades , Promoción de la Salud/métodos , Lugar de Trabajo , Ejercicio Físico , Estilo de Vida
11.
Alzheimers Dement ; 19(1): 67-78, 2023 01.
Artículo en Inglés | MEDLINE | ID: mdl-35266629

RESUMEN

INTRODUCTION: Clinically, detection of disease-causing pathology associated with Alzheimer's disease (AD) and vascular contributions to cognitive impairment and dementia (VCID) is limited to magnetic resonance imaging and positron emission tomography scans, which are expensive and not widely accessible. Here, we assess angiogenic, inflammatory, and AD-related plasma biomarkers to determine their relationships with human post mortem neuropathology. METHOD: Plasma samples were analyzed using a digital immunoassay and pathological evaluation was performed by University of Kentucky Alzheimer's Disease Research Center neuropathologists. The association of plasma markers with neuropathology was estimated via proportional odds and logistic regressions adjusted for age. RESULTS: Included cases (N = 90) showed increased tau/amyloid beta (Aß)42 ratio, glial fibrillary acidic protein (GFAP), vascular endothelial growth factor A (VEGF-A), and placental growth factor (PlGF) were positively associated with higher level of AD neuropathological change, while higher Aß42/Aß40 ratio was inversely associated. Higher PlGF, VEGF-A, and interleukin 6 were inversely associated with chronic cerebrovascular disease, while Aß42/Aß40 ratio was positively associated. DISCUSSION: Our results provide support for the continued study of plasma biomarkers as a clinical screening tool for AD and VCID pathology.


Asunto(s)
Enfermedad de Alzheimer , Disfunción Cognitiva , Demencia Vascular , Humanos , Femenino , Enfermedad de Alzheimer/patología , Factor A de Crecimiento Endotelial Vascular , Péptidos beta-Amiloides , Neuropatología , Autopsia , Factor de Crecimiento Placentario , Biomarcadores , Proteínas tau
12.
CMAJ Open ; 10(4): E1008-E1016, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-36446425

RESUMEN

BACKGROUND: Health care delivery shifted rapidly during the COVID-19 pandemic, whereby virtual consultations replaced many face-to-face interactions. We sought to gather patient perspectives on their experiences with virtual surgical consultation, the advantages and disadvantages of this delivery method and their overall satisfaction with virtual appointments. METHODS: We conducted a patient-oriented, cross-sectional study. Adult patients (age > 18 yr) who had a virtual consultation with a participating general surgeon in Saskatoon, Saskatchewan, from April to May 2020 were eligible. We conducted telephone interviews using open- and close-ended questions. We used thematic analysis to determine themes from the qualitative data. As research team members, 2 patient partners were involved in identifying priorities, developing the research question, designing research methods, analyzing data and disseminating findings. We analyzed and presented quantitative data descriptively. RESULTS: We interviewed 45 participants from 7 general surgery practices; the average age was 62 years. Most participants lived outside Saskatoon and had virtual follow-up appointments. The 3 themes related to advantages of virtual consultations were convenience, cost savings and decreased exposure to pathogens. The 4 themes related to their disadvantages were that they were not as personal, the surgeon was not able to perform a physical examination, and there were issues with scheduling and issues with technology. Most participants were satisfied with the care they received (n = 41) and would be willing to use virtual consultation in the future (n = 31). INTERPRETATION: We found that virtual consultations are an effective and efficient way to deliver surgical care but are not appropriate for every situation and cannot completely replace face-to-face interactions. Our study identified the advantages and disadvantages of virtual surgical consultation to help better guide the delivery of virtual care in the future.


Asunto(s)
COVID-19 , Adulto , Humanos , Persona de Mediana Edad , COVID-19/epidemiología , Estudios Transversales , Pandemias , Derivación y Consulta , Teléfono
13.
J Cell Sci ; 135(20)2022 10 15.
Artículo en Inglés | MEDLINE | ID: mdl-36239192

RESUMEN

Focal adhesion kinase (FAK; also known as PTK2) was discovered three decades ago and is now recognised as a key player in the regulation of cell-matrix adhesion and mesenchymal cell migration. Although it is essential during development, FAK also drives invasive cancer progression and metastasis. On a structural level, the basic building blocks of FAK have been described for some time. However, a picture of how FAK integrates into larger assemblies in various cellular environments, including one of its main cellular locations, the focal adhesion (FA) complex, is only beginning to emerge. Nano-resolution data from cellular studies, as well as atomic structures from reconstituted systems, have provided first insights, but also point to challenges that remain for obtaining a full structural understanding of how FAK is integrated in the FA complex and the structural changes occurring at different stages of FA maturation. In this Review, we discuss the known structural features of FAK, the interactions with its partners within the FA environment on the cell membrane and propose how its initial assembly in nascent FAs might change during FA maturation under force.


Asunto(s)
Adhesiones Focales , Adhesión Celular , Movimiento Celular , Quinasa 1 de Adhesión Focal/metabolismo , Proteína-Tirosina Quinasas de Adhesión Focal/metabolismo , Adhesiones Focales/metabolismo , Fosforilación
14.
Reprod Biomed Online ; 45(5): 913-922, 2022 11.
Artículo en Inglés | MEDLINE | ID: mdl-36085268

RESUMEN

RESEARCH QUESTION: What are the experience, and gynaecological and reproductive health outcomes in young adult women who have undergone ovarian tissue cryopreservation (OTC)? DESIGN: A retrospective observational study was conducted at a single institution between May 2019 and February 2021 including 87 women aged over 18 years undergoing OTC. Medical characteristics and questionnaire data collected more than 18 months after OTC were analysed. RESULTS: Close to 74% (n = 64/87) of women had a follow-up consultation and completed the questionnaire. Most women found the information provided on the OTC technique and the strategies proposed to restore fertility with ovarian tissue understandable and useful. The majority of patients thought that OTC had a positive impact on their well-being during disease treatment. Anti-Müllerian hormone serum concentration decreased significantly after treatment (P < 0.0001) and was significantly lower when patients received chemotherapy before OTC (P = 0.0039). The total cyclophosphamide equivalent dose was significantly higher in women with FSH concentrations above 25 IU/l after treatment (P = 0.0004). More than 70% of women who planned a pregnancy after the end of treatment succeeded, with a natural pregnancy rate close to 53%. Only nine patients (8.0%) underwent ovarian tissue transplantation for fertility restoration and six of them became pregnant and delivered at least once. CONCLUSION: Young adult women expressed a good satisfaction rate with OTC and that their experience had been beneficial. The usage rate of cryopreserved ovarian tissue remains low. The gynaecological and reproductive health follow-up consultation should be included in the supportive care provided following OTC.


Asunto(s)
Preservación de la Fertilidad , Embarazo , Adulto Joven , Humanos , Femenino , Adulto , Persona de Mediana Edad , Preservación de la Fertilidad/métodos , Salud Reproductiva , Estudios de Seguimiento , Criopreservación/métodos , Ovario , Estudios Retrospectivos
16.
Nanomaterials (Basel) ; 12(6)2022 Mar 15.
Artículo en Inglés | MEDLINE | ID: mdl-35335779

RESUMEN

Insertion polynorbornenes (PBNEs) are rigid-rod polymers that have very high glass transition temperatures (Tg). In this study, two functional PNBEs were electrospun in the presence of a variety of cross-linkers, resulting in fibers with Tgs greater than 300 °C. The fibers are long (several mm), rigid, and with diameters that can be tuned in the range 300 nm-10 µm. The electrospinning process can be used to encapsulate dyes or graphene dots. Due to the high cross-linking density of the fiber, dye leaching is prevented. In contrast with other rigid-rod polymers, electrospinning of PNBE is facile and can be performed at injection rates as high as 1 mL/min.

17.
J Pain Symptom Manage ; 63(5): 645-653, 2022 05.
Artículo en Inglés | MEDLINE | ID: mdl-35081441

RESUMEN

CONTEXT: The optimal strategy for implementing mortality-predicting algorithms to facilitate clinical care, prognostic discussions, and palliative care interventions remains unknown. OBJECTIVES: To develop and validate a real-time predictive model for 180 day mortality using routinely available clinical and laboratory admission data and determine if palliative care exposure varies with predicted mortality risk. METHODS: Adult admissions between October 1, 2013 and October.1, 2017 were included for the model derivation. A separate cohort was collected between January 1, 2018 and July 31, 2020 for validation. Patients were followed for 180 days from discharge, and logistic regression with selected variables was used to estimate patients' risk for mortality. RESULTS: In the model derivation cohort, 7963 events of 180 day mortality (4.5% event rate) were observed. Median age was 53.0 (IQR 24.0-66.0) with 92,734 females (52.5%). Variables with strongest association with 180 day mortality included: Braden Score (OR 0.83; 95% CI 0.82-0.84); admission Do Not Resuscitate orders (OR 2.61; 95% CI 2.43-2.79); admission service and admission status. The model yielded excellent discriminatory ability in both the derivation (c-statistic 0.873; 95% CI 0.870-0.877; Brier score 0.04) and validation cohorts (c-statistic 0.844; 95% CI 0.840-0.847; Brier score 0.072). Inpatient palliative care consultations increased from 3% of minimal-risk encounters to 41% of high-risk encounters (P < 0.01). CONCLUSION: We developed and temporally validated a predictive mortality model for adults from a large retrospective cohort, which helps quantify the potential need for palliative care referrals based on risk strata. Machine learning algorithms for mortality require clinical interpretation, and additional studies are needed to design patient-centered and risk-specific interventions.


Asunto(s)
Aprendizaje Automático , Cuidados Paliativos , Adulto , Estudios de Cohortes , Femenino , Hospitalización , Humanos , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Medición de Riesgo
18.
Eur J Cardiothorac Surg ; 61(5): 977-987, 2022 05 02.
Artículo en Inglés | MEDLINE | ID: mdl-34918068

RESUMEN

OBJECTIVES: The incidence of outcomes in trials comparing transcatheter aortic valve implantation (TAVI) and surgical aortic valve replacement (SAVR) is expected to be different in the short and long term. We planned a meta-analysis of reconstructed time-to-event data from trials comparing TAVI and SAVR to evaluate their time-varying effects on outcomes. METHODS: We performed a systematic review of the literature from January 2007 through September 2021 on Medline, Embase, the Cochrane Central Register of Controlled Trials and specialistic websites, including randomized trials with allocation to TAVI or SAVR that reported at least 1-year follow-up and that graphed Kaplan-Meier curves of end points. The comparisons were done with grouped frailty Cox models in a landmark framework and fully parametric models. RESULTS: Seven trials were included (7770 participants). TAVI showed a lower incidence of the composite of death or stroke in the first 6 months [risk-stratified hazard ratio (HR) 0.66, 95% confidence interval (CI) 0.56-0.77, P-value <0.001], with an HR reversal after 24 months favouring SAVR (risk-stratified HR 1.25; 95% CI 1.08-1.46; P-value 0.003). These outcomes were confirmed for all-cause death (risk-stratified HR after 24 months 1.18; 95% CI 1.03-1.35; P-value 0.01). TAVI was also associated with an increased incidence of rehospitalization after 6 months (risk-stratified HR 1.42; 95% CI 1.06-1.91; P-value 0.018) that got worse after 24 months (risk-stratified HR 1.67; 95% CI 1.24-2.24; P-value <0.001). CONCLUSIONS: Although it could appear that there is no difference between TAVI and SAVR in the 5-year cumulative results, TAVI shows a strong protective effect in the short term that runs out after 1 year. TAVI becomes a risk factor for all-cause mortality and the composite end point after 24 months and for rehospitalization after 6 months.


Asunto(s)
Estenosis de la Válvula Aórtica , Implantación de Prótesis de Válvulas Cardíacas , Prótesis Valvulares Cardíacas , Reemplazo de la Válvula Aórtica Transcatéter , Válvula Aórtica/cirugía , Estenosis de la Válvula Aórtica/cirugía , Implantación de Prótesis de Válvulas Cardíacas/métodos , Humanos , Factores de Riesgo , Reemplazo de la Válvula Aórtica Transcatéter/métodos , Resultado del Tratamiento
19.
Disabil Rehabil ; 44(7): 991-1006, 2022 04.
Artículo en Inglés | MEDLINE | ID: mdl-32602384

RESUMEN

PURPOSE: To systematically identify, evaluate, and synthesise the qualitative literature on the self-care behaviours, skills, and strategies performed by individuals with spinal cord injury (SCI). REVIEW METHODS: The Joanna Briggs Institute (JBI) meta-aggregation method was followed. The search was conducted on five databases and limited to papers published from January 2000 to March 2020. Two independent reviewers screened, extracted the data from, and assessed the methodological quality of selected papers using the JBI qualitative assessment and critical appraisal instrument. RESULTS: Eleven qualitative papers were included. Three synthesised findings with a moderate level of confidence emerged from 90 findings: people with SCI perform self-directed or directed-by-other behaviours focused on their physical condition (i); and on their social life (ii); people with SCI perform self-directed behaviours focused on their emotional well-being (iii). Individuals with SCI are aware of their condition and incorporate self-care behaviours into their routine to maintain health and prevent complications. CONCLUSION: This meta-synthesis provides evidence on the self-care behaviours performed by people with SCI to prevent, control, and manage the physical, emotional, and social effects of their condition. These findings may help healthcare providers to understand the self-care process in SCI survivors and tailor educational programmes to their experiences.IMPLICATIONS FOR REHABILITATIONSCI survivors are directly responsible for their health and must reach their maximum level of independence by acquiring self-care behaviours and adjusting them over time.Self-care behaviours must be incorporated into SCI survivors' daily routine to maintain their condition, promote their social participation, and prevent complications.Caregiver contributions to self-care should be given more value, as these are fundamental to maintain SCI survivors' well-being and social participation.


Asunto(s)
Autocuidado , Traumatismos de la Médula Espinal , Cuidadores/psicología , Personal de Salud , Humanos , Investigación Cualitativa
20.
Surg Endosc ; 36(5): 2879-2885, 2022 05.
Artículo en Inglés | MEDLINE | ID: mdl-34129087

RESUMEN

BACKGROUND: Enthusiasm is high for expansion of robotic assisted surgery into right hemicolectomy. But data on outcomes and cost is lacking. Our objective was to determine the association between surgical approach and cost for minimally invasive right hemicolectomy. We hypothesized that a robot approach would have increased costs (both economic and opportunity) while achieving similar short-term outcomes. METHODS: We performed a retrospective cohort analysis with a simulation of operating room utilization at a quaternary care, academic institution. We enrolled patients undergoing minimally invasive right hemicolectomy from November 2017 to August 2019. Patients were categorized by the intended approach- laparoscopic or robotic. The primary outcome was the technical variable direct cost. Secondary outcomes included total cost, supply cost, operating room utilization, operative time, conversion, length of stay and 30-day post-operative outcomes. RESULTS: 79 patients were included in the study. A robotic approach was used in 22% of the cohort. The groups differed significantly only in etiology of surgery. Robotic surgery was associated with a 1.5 times increase in the technical variable direct cost (p < 0.001), increased supply cost (2.6 times; p < 0.001) and increased total cost (1.3 times; p < 0.001). Significant differences were observed in median room time (Robotic: 285 min vs. Laparoscopic: 170 min; p < 0.001) and procedure time (Robotic: 203 min vs. Laparoscopic: 118 min; p < 0.001). There were no differences observed in post-operative outcomes including length of stay or readmission. In a simulation of OR utilization, 45 laparoscopic right hemicolectomies could be performed in an OR in a month compared to 31 robotic cases. CONCLUSIONS: Robotic right hemicolectomy was associated with increased costs with no improvement in post-operative outcomes. In a simulation of operating room efficiency, a robotic approach was associated with 14 fewer cases per month. Practitioners and administrators should be aware of the increased cost of a robotic approach.


Asunto(s)
Laparoscopía , Procedimientos Quirúrgicos Robotizados , Robótica , Colectomía/métodos , Humanos , Tiempo de Internación , Tempo Operativo , Estudios Retrospectivos , Procedimientos Quirúrgicos Robotizados/métodos
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