Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 1.289
Filtrar
Mais filtros








Intervalo de ano de publicação
1.
Nat Commun ; 15(1): 8631, 2024 Oct 05.
Artigo em Inglês | MEDLINE | ID: mdl-39366958

RESUMO

Acquisition of specialized cellular features is controlled by the ordered expression of transcription factors (TFs) along differentiation trajectories. Here, we find a member of the Onecut TF family, ONECUT3, expressed in postmitotic neurons that leave their Ascl1+/Onecut1/2+ proliferative domain in the vertebrate hypothalamus to instruct neuronal differentiation. We combined single-cell RNA-seq and gain-of-function experiments for gene network reconstruction to show that ONECUT3 affects the polarization and morphogenesis of both hypothalamic GABA-derived dopamine and thyrotropin-releasing hormone (TRH)+ glutamate neurons through neuron navigator-2 (NAV2). In vivo, siRNA-mediated knockdown of ONECUT3 in neonatal mice reduced NAV2 mRNA, as well as neurite complexity in Onecut3-containing neurons, while genetic deletion of Onecut3/ceh-48 in C. elegans impaired neurocircuit wiring, and sensory discrimination-based behaviors. Thus, ONECUT3, conserved across neuronal subtypes and many species, underpins the polarization and morphological plasticity of phenotypically distinct neurons that descend from a common pool of Ascl1+ progenitors in the hypothalamus.


Assuntos
Hipotálamo , Morfogênese , Neurônios , Fatores de Transcrição , Animais , Hipotálamo/metabolismo , Hipotálamo/citologia , Neurônios/metabolismo , Neurônios/citologia , Camundongos , Fatores de Transcrição/metabolismo , Fatores de Transcrição/genética , Morfogênese/genética , Caenorhabditis elegans/genética , Caenorhabditis elegans/metabolismo , Diferenciação Celular/genética , Masculino , Neurogênese/genética , Fatores de Transcrição Hélice-Alça-Hélice Básicos/metabolismo , Fatores de Transcrição Hélice-Alça-Hélice Básicos/genética , Camundongos Endogâmicos C57BL , Feminino
2.
ArXiv ; 2024 Jul 27.
Artigo em Inglês | MEDLINE | ID: mdl-39398199

RESUMO

Biomolecular condensates form by phase separation of biological polymers. The cellular functions of the resulting membraneless organelles are closely linked to their physical properties over a wide range of length- and timescales: From the nanosecond dynamics of individual molecules and their interactions, to the microsecond translational diffusion of molecules in the condensates, to their viscoelastic properties at the mesoscopic scale. However, it has remained unclear how to quantitatively link these properties across scales. Here we address this question by combining single-molecule fluorescence, correlation spectroscopy, microrheology, and large-scale molecular dynamics simulations on different condensates that are formed by complex coacervation and span about two orders of magnitude in viscosity and their dynamics at the molecular scale. Remarkably, we find that the absolute timescale of protein chain dynamics in the dense phases can be quantitatively and accurately related to translational diffusion and condensate viscosities by Rouse theory of polymer solutions including entanglement. The simulations indicate that the observed wide range of dynamics arises from different contact lifetimes between amino acid residues, which in the mean-field description of the polymer model cause differences in the friction acting on the chains. These results suggest that remarkably simple physical principles can relate the mesoscale properties of biomolecular condensates to their dynamics at the nanoscale.

4.
Mol Biol Evol ; 41(9)2024 Sep 04.
Artigo em Inglês | MEDLINE | ID: mdl-39268685

RESUMO

The Roman period saw the empire expand across Europe and the Mediterranean, including much of what is today Great Britain. While there is written evidence of high mobility into and out of Britain for administrators, traders, and the military, the impact of imperialism on local, rural population structure, kinship, and mobility is invisible in the textual record. The extent of genetic change that occurred in Britain during the Roman military occupation remains underexplored. Here, using genome-wide data from 52 ancient individuals from eight sites in Cambridgeshire covering the period of Roman occupation, we show low levels of genetic ancestry differentiation between Romano-British sites and indications of larger populations than in the Bronze Age and Neolithic. We find no evidence of long-distance migration from elsewhere in the Empire, though we do find one case of possible temporary mobility within a family unit during the Late Romano-British period. We also show that the present-day patterns of genetic ancestry composition in Britain emerged after the Roman period.


Assuntos
Migração Humana , População Rural , Humanos , Reino Unido , História Antiga , DNA Antigo/análise , Genética Populacional
5.
JAMA Pediatr ; 2024 Sep 30.
Artigo em Inglês | MEDLINE | ID: mdl-39348138

RESUMO

Importance: The prevalence estimates of physical activity, sedentary behavior, and sleep (collectively known as movement behaviors) in 3- and 4-year-old children worldwide remains uncertain. Objective: To report the proportion of 3- and 4-year-old children who met the World Health Organization guidelines for physical activity, sedentary behavior, and sleep across 33 countries. Design, Setting, and Participants: Pooled analysis of data from 14 cross-sectional studies (July 2008 to September 2022) identified through systematic reviews and personal networks. Thirty-three countries of varying income levels across 6 geographical regions. Each study site needed to have at least 40 children aged 3.0 to 4.9 years with valid accelerometry and parent-/caregiver-reported screen time and sleep duration data. Data were analyzed from October 2022 to February 2023. Exposures: Time spent in physical activity was assessed by reanalyzing accelerometry data using a harmonized data-processing protocol. Screen time and sleep duration were proxy reported by parents or caregivers. Main Outcomes and Measures: The proportion of children who met the World Health Organization guidelines for physical activity (≥180 min/d of total physical activity and ≥60 min/d of moderate- to vigorous-intensity physical activity), screen time (≤1 h/d), and sleep duration (10-13 h/d) was estimated across countries and by World Bank income group and geographical region using meta-analysis. Results: Of the 7017 children (mean [SD] age, 4.1 [0.5] years; 3585 [51.1%] boys and 3432 [48.9%] girls) in this pooled analysis, 14.3% (95% CI, 9.7-20.7) met the overall guidelines for physical activity, screen time, and sleep duration. There was no clear pattern according to income group: the proportion meeting the guidelines was 16.6% (95% CI, 10.4-25.3) in low- and lower-middle-income countries, 11.9% (95% CI, 5.9-22.5) in upper-middle-income countries, and 14.4% (95% CI, 9.6-21.1) in high-income countries. The region with the highest proportion meeting the guidelines was Africa (23.9%; 95% CI, 11.6-43.0), while the lowest proportion was in North and South America (7.7%; 95% CI, 3.6-15.8). Conclusions and Relevance: Most 3- and 4-year-old children in this pooled analysis did not meet the current World Health Organization guidelines for physical activity, sedentary behavior, and sleep. Priority must be given to understanding factors that influence these behaviors in this age group and to implementing contextually appropriate programs and policies proven to be effective in promoting healthy levels of movement behaviors.

6.
J Clin Med ; 13(18)2024 Sep 23.
Artigo em Inglês | MEDLINE | ID: mdl-39337130

RESUMO

Background: Aortic dissection is still afflicted with significant morbidity and mortality. This research seeks to assess long-term outcomes and quality of life after emergency surgery for acute aortic dissection type A. Methods: A total of 413 patients were analysed, who had been operated upon between 2000 and 2016 at our centre. We compared our results of the early (2000-2007) versus late (2008-2016) period with regards to 30-day and follow-up mortality and need for reoperation, including risk factor analysis. Quality of life was assessed via the SF-36 survey. Results: Calculated perioperative risk by EuroSCORE increased significantly from early, 24.9%, to late, 38.0%, p < 0.001. Thirty-day rates of mortality decreased significantly from 26.7% to 17.4%, p = 0.03. Survival at 1-, 5-, and 10-years was 92.3% vs. 91.8% (p = 0.91), 75.2% vs. 81.0% (p = 0.29), and 53.4% vs. 69.7% (p = 0.04). Freedom from reoperation was comparable between groups at follow-up: 74.0% vs. 85.7%, p = 0.28. Quality of life was impaired. Conclusions: Despite more complex severity of disease and operative procedures, the results of surgery for type A aortic dissection improved significantly over time at 30-day and 10-year follow-up. Quality of life was significantly impaired compared to a healthy reference population.

8.
Respirol Case Rep ; 12(9): e70027, 2024 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-39301149

RESUMO

Pulmonary hypertension (PH) is a prevalent complication among patients with chronic kidney disease (CKD). In these patients, pulmonary vasodilators may be useful but are underused. We describe a group of patients with precapillary PH and advanced CKD treated with pulmonary vasodilators. This was a case series of patients with CKD stage 4 and 5 and precapillary PH (isolated or combined) based on right heart catheterization (RHC) treated with pulmonary vasodilators from 2018 to 2023. Of 263 patients with isolated precapillary or combined PH and advanced CKD, only 17 (6%) were treated with pulmonary vasodilators; 53% (n = 9) with precapillary PH and 47% (n = 8) with combined PH. Most patients (94%, n = 16) received phosphodiesterase-5 antagonists, while 12% (n = 2) received endothelin receptor antagonists. Adverse clinical outcomes were seen in 35% of patients within a year. The use of pulmonary vasodilator did not prevent adverse outcomes in patients with precapillary PH and advanced CKD.

9.
Nanoscale Adv ; 2024 Aug 28.
Artigo em Inglês | MEDLINE | ID: mdl-39247863

RESUMO

In the context of global climate change, the demand for new functional materials that are sustainable and environmentally friendly is rapidly increasing. Cellulose and lignin are the two most abundant raw materials in nature, and are ideal components for functional materials. The hydrophilic interface and easy film-forming properties of cellulose nanofibrils make them excellent candidates for natural biopolymer templates and network structures. Lignin is a natural UV-shielding material, as it contains a large number of phenolic groups. In this work, we have applied two routes for spray deposition of hybrid films with different laminar structures using surface-charged cellulose nanofibrils and water-based colloidal lignin particles. As the first route, we prepare stacked colloidal lignin particles and cellulose nanofibrils hybrid film through a layer-by-layer deposition. As the second route, we spray-deposite premixed colloidal lignin particles and cellulose nanofibrils dispersion to prepare a mixed hybrid film. We find that cellulose nanofibrils act as a directing agent to dominate the arrangement of the colloidal lignin particles in a mixed system. Additionally, cellulose nanofibrils eliminate the agglomerations and thus increase the visible light transparency while retaining the UV shielding ability. Our research on these colloidal lignin and cellulose nanofibril hybrid films provides a fundamental understanding of using colloidal lignin nanoparticles as functional material on porous cellulose-based materials, for example on fabrics.

10.
J Am Heart Assoc ; 13(18): e032492, 2024 Sep 17.
Artigo em Inglês | MEDLINE | ID: mdl-39248253

RESUMO

BACKGROUND: Previous studies have found that exposure to childhood environmental stress is associated with cardiometabolic risk. However, it is not known whether individual health behaviors disrupt this relationship. This study prospectively evaluated the relationship between cumulative environmental stress in a low-income sample and cardiometabolic risk in middle childhood and examined whether child health behaviors attenuated this relationship. METHODS AND RESULTS: In a cohort of children (n=338; 57% Hispanic children; 25% Black children), environmental stressors (family and neighborhood factors representing disadvantage/deprivation) and child health behaviors (accelerometry measured physical activity; parent-reported screen time and diet recalls) were measured over 5 time points beginning when children were aged 2 to 4 years and ending when they were aged 7 to 11 years. Children's cardiometabolic risk factors (body mass index, blood pressure, triglyceride/high-density lipoprotein ratio, glucose, hemoglobin A1c, C-reactive protein) were measured at 7 to 11 years. Emerging cardiometabolic risk was defined as having ≥1 elevations that exceeded clinical thresholds. In adjusted path analyses, greater cumulative environmental stress was associated with higher likelihood of emerging cardiometabolic risk in middle childhood (P<0.001). Higher levels of moderate to vigorous physical activity and fewer sedentary minutes attenuated the positive relationship between stress and cardiometabolic risk (P<0.05). Children with >2 hours of average daily screen time had a higher likelihood of elevated cardiometabolic risk (P<0.01), but screen time did not moderate the stress-cardiometabolic risk relationship. Dietary intake was not related to cardiometabolic risk. CONCLUSIONS: Interventions that promote moderate to vigorous physical activity and limit sedentary behavior may have particular importance for the cardiometabolic health of children exposed to high levels of cumulative environmental stress.


Assuntos
Fatores de Risco Cardiometabólico , Exercício Físico , Comportamentos Relacionados com a Saúde , Humanos , Criança , Masculino , Feminino , Pré-Escolar , Estudos Prospectivos , Comportamento Infantil , Pobreza , Doenças Cardiovasculares/epidemiologia , Doenças Cardiovasculares/etiologia , Medição de Risco , Estresse Psicológico/epidemiologia , Comportamento Sedentário , Tempo de Tela , Dieta/efeitos adversos , Fatores de Risco
11.
bioRxiv ; 2024 Aug 26.
Artigo em Inglês | MEDLINE | ID: mdl-39253433

RESUMO

Novel vaccines targeting the world's deadliest pathogen Mycobacterium tuberculosis (Mtb) are urgently needed as the efficacy of the Bacillus Calmette-Guérin (BCG) vaccine in its current use is limited. HLA-E is a virtually monomorphic unconventional antigen presentation molecule and HLA-E restricted Mtb specific CD8+ T cells can control intracellular Mtb growth, making HLA-E a promising vaccine target for Mtb. In this study, we evaluated the frequency and phenotype of HLA-E restricted Mtb specific CD4+/CD8+ T cells in the circulation and bronchoalveolar lavage fluid of two independent non-human primate (NHP) studies and from humans receiving BCG either intradermally or mucosally. BCG vaccination followed by Mtb challenge in NHPs did not affect the frequency of circulating and local HLA-E/Mtb CD4+ and CD8+ T cells, and we saw the same in humans receiving BCG. HLA-E/Mtb T cell frequencies were significantly increased after Mtb challenge in unvaccinated NHPs, which was correlated with higher TB pathology. Together, HLA-E/Mtb restricted T cells are minimally induced by BCG in humans and rhesus macaques (RMs) but can be elicited after Mtb infection in unvaccinated RMs. These results give new insights into targeting HLA-E as a potential immune mechanism against TB.

12.
PLoS One ; 19(9): e0310799, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-39312564

RESUMO

BACKGROUND: Besides improving the quality of care, quality improvement initiatives often also intend to produce cost savings. An example is prehabilitation, which can reduce complication rates and the length of stay in the hospital. However, the process from utilization reductions to actual societal cost savings remains uncertain in practice. Our aim was to identify barriers and facilitators throughout this process. We used the implementation of prehabilitation in a Dutch hospital as a test case. METHODS: We held 20 semi-structured interviews between June and November 2023. Eighteen stakeholders were affiliated with the hospital and two with different health insurers. Nine interviews were held face-to-face and 11 via Microsoft Teams. The interviews were recorded and transcribed. The first transcripts were inductively coded by two authors, the subsequent transcripts by one and checked by another. Differences were resolved through discussion. RESULTS: We identified 20 barriers and 23 facilitators across four stages: reducing capacity, reducing departmental expenses, reducing hospital expenses and reducing insurer expenses. All participants expected that the excess capacity will be used for other priorities. This was perceived as highly valuable and as an efficiency gain. Other barriers to capture savings included the fear of losing resilience, flexibility, status and revenue. Misalignment between service contracts among hospitals and insurers can hinder the ability to financially incentivize cost reductions. Additionally, some contract types can hinder the transfer of hospital savings to insurers. Identified facilitators included shared savings agreements, an explicit strategy targeting all stages, and labor shortage, among others. CONCLUSION: This study systematically describes barriers and facilitators that prevent translating quality improvement initiatives into societal cost savings. Stakeholders expect that any saved capacity will be used for other priorities, including providing care due to the increasing demand. Capturing any cash savings does not occur automatically, emphasizing the need for a strategy targeting all stages.


Assuntos
Redução de Custos , Pesquisa Qualitativa , Melhoria de Qualidade , Humanos , Participação dos Interessados , Países Baixos , Hospitais
13.
Ned Tijdschr Geneeskd ; 1682024 09 10.
Artigo em Holandês | MEDLINE | ID: mdl-39258447

RESUMO

OBJECTIVE: To gain insight into the blood culture (BC) utilization in emergency departments (EDs) and to identify differences in the indications for BC collection. DESIGN: Retrospective study METHOD: Data were collected in 11 EDs for 2018, 2019, and 2020. Indications for blood culture collection were identified in from the hospital protocols. Participants indicated which indications are used in their ED. RESULTS: In 2019, ten EDs collected BC from 19% to 30% of all patients for internal medicine and geriatrics. Both the used indications and the cutoff values varied. For fever, >38.0°C, >38.3°C, or >38.5°C were used, and for hypothermia <36.0°C or <35.0°C. CONCLUSION: There is a variation in the percentage of collected BC in the EDs. Additionally, the used indications and the cutoff values differed. A national discussion on criteria is needed to reduce this variation. Meanwhile, structured benchmarking can make BC collection more appropriate.


Assuntos
Hemocultura , Serviço Hospitalar de Emergência , Humanos , Serviço Hospitalar de Emergência/estatística & dados numéricos , Hemocultura/estatística & dados numéricos , Estudos Retrospectivos
14.
Heart Lung ; 68: 260-264, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-39116576

RESUMO

BACKGROUND: Pulmonary hypertension (pH) is a well-known complication among patients with chronic kidney disease (CKD). Arteriovenous fistulae (AVF) have been associated with pH mainly by increasing cardiac output. However, the burden of precapillary pH in individuals with CKD and an AVF is unclear. OBJECTIVES: To better and more fully understand the mechanism and development of precapillary pH in patients with AVF, as well as the consequences of precapillary pH in these patients. METHODS: This was a large retrospective study of patients with CKD stage 4 or 5 who underwent right heart catheterization (RHC) from 2018 to 2023. The data were stratified according to the presence of AVF. To determine if AVF was independently associated with precapillary pH, we used a multivariable logistic regression analysis adjusting for demographics and potential comorbidities associated with precapillary pH, including diagnosis of chronic lung disease, obstructive sleep apnea, connective tissue disease, history of venous thromboembolism, chronic anemia, and heart failure. RESULTS: Of 651 patients with CKD4 or CKD5, 145 (22 %) had AVF and 506 (78 %) did not have AVF. Within the AVF group, the median age was 64 years (IQR 54-71), and they were predominantly males (61 %, n = 88) and African American (77 %, n = 111). A total of 31 % (n = 45) had evidence of precapillary pH, 30 % (n = 43) of combined pH, and 14 % (n = 20) of isolated postcapillary pH. Compared to the non-AVF group, precapillary pH was more likely in the AVF group (31% vs 17 %, p < 0.0001). On multivariable analysis, AVF was independently associated with precapillary pH (OR 2.47, CI 1.56-3.89; p < 0.0001). The median time from dialysis initiation to RHC date (and precapillary pH diagnosis) was 6 years (IQR 3-8). CONCLUSION: Based on RHC findings, almost one-third of patients with CKD and AVF had precapillary pH. The presence of AVF was independently associated with precapillary pH.


Assuntos
Hemodinâmica , Hipertensão Pulmonar , Insuficiência Renal Crônica , Humanos , Masculino , Feminino , Hipertensão Pulmonar/fisiopatologia , Hipertensão Pulmonar/epidemiologia , Hipertensão Pulmonar/etiologia , Hipertensão Pulmonar/complicações , Estudos Retrospectivos , Pessoa de Meia-Idade , Idoso , Hemodinâmica/fisiologia , Insuficiência Renal Crônica/complicações , Insuficiência Renal Crônica/fisiopatologia , Insuficiência Renal Crônica/epidemiologia , Derivação Arteriovenosa Cirúrgica/efeitos adversos , Derivação Arteriovenosa Cirúrgica/métodos , Cateterismo Cardíaco/métodos , Fístula Arteriovenosa/complicações , Fístula Arteriovenosa/fisiopatologia , Diálise Renal/efeitos adversos
15.
J Adv Nurs ; 2024 Aug 22.
Artigo em Inglês | MEDLINE | ID: mdl-39171676

RESUMO

AIM: To explore barriers and facilitators for reducing low-value home-based nursing care. DESIGN: Qualitative exploratory study. METHOD: Seven focus group interviews and two individual interviews were conducted with homecare professionals, managers and quality improvement staff members within seven homecare organizations. Data were deductively analysed using the Tailored Implementation for Chronic Diseases checklist. RESULTS: Barriers perceived by homecare professionals included lack of knowledge and skills, such as using care aids, interactions between healthcare professionals and general practitioners creating expectations among clients. Facilitators perceived included reflecting on provided care together with colleagues, clearly communicating agreements and expectations towards clients. Additionally, clients' and relatives' behaviour could potentially hinder reduction. In contrast, clients' motivation to be independent and involving relatives can promote reduction. Lastly, non-reimbursement and additional costs of care aids were perceived as barriers. Support from organization and management for the reduction of care was considered as facilitator. CONCLUSION: Understanding barriers and facilitators experienced by homecare professionals in reducing low-value home-based nursing care is crucial. Enhancing knowledge and skills, fostering cross-professional collaboration, involving relatives and motivating clients' self-care can facilitate reduction of low-value home-based nursing care. Implications for profession and patient care: De-implementing low-value home-based nursing care offers opportunities for more appropriate care and inclusion of clients on waitlists. IMPACT: Addressing barriers with tailored strategies can successfully de-implement low-value home-based nursing care. REPORTING METHOD: The Consolidated Criteria for Reporting Qualitative Research checklist was used. No patient or public contribution.

16.
Blood Adv ; 2024 Aug 29.
Artigo em Inglês | MEDLINE | ID: mdl-39207869

RESUMO

Clinical features in patients with the B-cell lymphoma, Waldenström Macroglobulinaemia (WM), include cytopenias, IgM-mediated hyperviscosity, fatigue, bleeding and bruising. Therapeutics such as Bruton's tyrosine kinase inhibitors (BTKis) exacerbate bleeding risk. Abnormal haemostasis arising from platelet dysfunction, altered coagulation or vascular impairment have not been investigated in WM patients. To evaluate haemostatic dysfunction in samples from WM patients. Whole blood (WB) samples were collected from 14 WM patients not receiving therapy, 5 patients receiving BTKis and 15 healthy donors (HDs). Platelet receptor levels and reticulation were measured by flow cytometry, plasma thrombin generation ± platelets by FRET assay, WB clotting potential by rotational thromboelastometry (ROTEM), and plasma soluble glycoprotein VI (sGPVI) and serum thrombopoietin (TPO) by ELISA. Donor platelet spreading, aggregation and ability to accelerate thrombin generation in the presence of WM-derived IgM were assessed. WM platelet receptor levels, responses to physiological agonists and plasma sGPVI were within normal ranges. WM platelets had reduced reticulation (p=0.0012) while serum TPO levels were increased (p=0.0040). WM plasma displayed slower thrombin generation (p=0.0080) and WM platelets contributed less to endogenous thrombin potential (ETP, p=0.0312). HD plasma or platelets incubated with IgM (50-60 mg/mL) displayed reduced spreading (p=0.0002), aggregation (p<0.0001) and ETP (p=0.0081). Alterations to thrombin potential and WB coagulation were detected in WM samples. WM IgM significantly impaired haemostasis in vitro. Platelet and coagulation properties are disturbed in well-managed WM patients.

17.
Nutrients ; 16(16)2024 Aug 09.
Artigo em Inglês | MEDLINE | ID: mdl-39203770

RESUMO

BACKGROUND AND AIMS: Saliva is essential for the proper dilution and distribution of taste molecules on the tongue. It harbors extracellular vesicles (EVs), which mediate cell-cell communication. Changes in the composition of salivary EVs may arise under obese conditions and may potentially be involved in taste sensation and dysregulated eating behavior. Therefore, this study addresses the relationship between the size and concentration of salivary EVs and metabolic shifts in obesity or factors of taste sensation. MATERIALS AND METHODS: A total of 119 participants in the Obese Taste Bud (OTB) Study were included, who performed a standardized taste test, underwent taste bud density assessment, and were phenotypically characterized for anthropometrics, blood- and saliva adipokine levels, and various metabolic factors. Utilizing size exclusion chromatography followed by ultrafiltration, EVs were extracted from 2 mL of actively secreted saliva. EVs were characterized using nanoparticle tracking analyses, Western blot, and scanning transmission electron microscopy. Finally, group comparisons and bivariate correlation analyses were conducted. RESULTS: Among the total cohort, the median size of salivary EVs was 190.05 nm, and the overall concentration ranged from 1.4 × 107 to 1.76 × 109 per mL of saliva. The size range and concentration of EVs per mL are negatively correlated (p = 0.0002, r = -0.264). Comparing lean participants (mean rank of 45.98) with those presenting obesity (mean rank of 34.46), a significant difference in the salivary EV content was observed (p = 0.029). Body weight, BMI, arm and calf circumferences, as well as the percentage of body fat were all negatively related to the concentration of EVs in all study participants (all p < 0.05, r > -0.2). No associations were found between the EV parameters and taste perception but serum alkaline phosphatase levels were negatively correlated (p = 0.007, r = -0.284) and adiponectin serum levels were positively correlated to the EV concentration (p = 0.036, r = 0.208). CONCLUSION: The current study provides evidence for the relation between salivary EVs and anthropometric as well as metabolic parameters of obesity. This can provide the basis for further research on the cargo of salivary EVs and how they may influence taste sensation, and may elucidate their potential connection to altered eating habits in obesity.


Assuntos
Vesículas Extracelulares , Obesidade , Saliva , Humanos , Vesículas Extracelulares/metabolismo , Obesidade/metabolismo , Saliva/metabolismo , Saliva/química , Feminino , Masculino , Adulto , Pessoa de Meia-Idade , Papilas Gustativas/metabolismo , Paladar/fisiologia , Adulto Jovem
18.
BMC Public Health ; 24(1): 2118, 2024 Aug 05.
Artigo em Inglês | MEDLINE | ID: mdl-39103796

RESUMO

BACKGROUND: Depression is a common mental disorder. Detecting (sub)clinical depressive symptoms in adolescents at an early stage and offering a low-threshold early intervention can minimize the risk of serious and/or long-term depression. As such, a digital intervention can be a low-threshold preventive and early intervention. This study aims to examine whether the Boost My Mood (BMM)-app is a suitable preventive early intervention for adolescents with (sub)clinical depressive symptoms. METHODS: This naturalistic single-arm evaluation study (N = 50) was conducted in adolescents aged 16-21 with (sub)clinical depressive symptoms. Furthermore, the BMM-app was studied in relation to anxiety, worrying, stress, and sleeping problems. An exploratory objective was to determine whether positive expectations and social support are related to app use. RESULTS: The study showed a significant decrease in not only depressive symptoms, but also anxiety, worrying and stress while using the BMM-app. Sleeping problems did not significantly decrease over time while using the BMM-app. The degree of use of the BMM-app and telling significant others about using the BMM-app were both not related to a decrease in depressive symptoms. The BMM-app was used significantly more when the adolescent had told relatives about their depressive symptoms. CONCLUSIONS: A digital intervention, such as the BMM-app, can be a low-threshold preventive and early intervention for adolescents with (sub)clinical depressive symptoms. Beneficial effects of the BMM-app were reported on depressive symptoms as well as other aspects of quality of life, such as anxiety, worrying, and stress. Whereas several factors may have played a role in the current findings on depressive symptoms, there are reasons to assume that part of the reduction in symptoms could be attributed to the BMM-app. Although no causality can be assumed, this study is a first step in the implementation of preventive apps in mental health care.


Assuntos
Depressão , Aplicativos Móveis , Humanos , Adolescente , Masculino , Feminino , Depressão/prevenção & controle , Depressão/psicologia , Adulto Jovem , Intervenção Médica Precoce , Ansiedade/prevenção & controle , Estresse Psicológico/prevenção & controle
19.
J Clin Exp Hepatol ; 14(6): 101470, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-39100890

RESUMO

Introduction: Despite advances in the diagnosis and therapeutics strategies for pulmonary hypertension (PH) in patients with end-stage liver disease (ESLD), the impact of hemodynamic patterns among ESLD patients identified through right heart catheterization (RHC) on clinical outcomes remains poorly understood. Methods: This single-center retrospective cohort study identified patients diagnosed with ESLD who underwent RHC from August 2018 to June 2023. Demographic and clinical data, including comorbidities, transthoracic echocardiography, and RHC findings, were obtained. Our outcomes of interest were all-cause mortality and the chance of receiving orthotopic liver transplantation (OLT) within a year after RHC. Kaplan-Meier with log-rank test was employed to generate survival curves. Results: We identified 415 ESLD patients with the RHC results. The median (IQR) age was 59 years (52-66), and 62% were male. Caucasians accounted for 43%, followed by African Americans (30%). Up to 89% had a diagnosis of portal hypertension. Median MELD-Na score was 30 (19-36). The etiology of ESLD was mainly from alcohol use (55%). Patients were classified based on RHC results as pre-capillary PH (19%), post-capillary PH (28%), and non-PH (53%) groups. Overall, one-year mortality post-RHC was 22%, with no significant difference in mortality regardless of hemodynamic group. However, the pre-capillary PH group was less likely to receive OLT compared to other groups (P < 0.001). Conclusion: We observed no difference in all-cause mortality among hemodynamic groups. However, pre-capillary PH group were less likely to undergo OLT compared to others. Further investigations are necessary to determine how this should be addressed in clinical practice.

SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA