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1.
Acta Biomater ; 2024 Sep 07.
Artigo em Inglês | MEDLINE | ID: mdl-39245308

RESUMO

Cell therapy is a promising strategy for treating neurological pathologies but requires invasive methods to bypass the blood-brain barrier restrictions. The nose-to-brain route has been presented as a direct and less invasive alternative to access the brain. The primary limitations of this route are low retention in the olfactory epithelium and poor cell survival in the harsh conditions of the nasal cavity. Thus, using chitosan-based hydrogel as a vehicle is proposed in this work to overcome the limitations of nose-to-brain cell administration. The hydrogel's design was driven to achieve gelification in response to body temperature and a mucosa-interacting chemical structure biocompatible with cells. The hydrogel showed a < 30 min gelation time at 37 °C and >95 % biocompatibility with 2D and 3D cultures of mesenchymal stromal cells. Additionally, the viability, stability, and migration capacity of oligodendrocyte precursor cells (OPCs) within the hydrogel were maintained in vitro for up to 72 h. After the intranasal administration of the OPCs-containing hydrogel, histological analysis showed the presence of viable cells in the nasal cavity for up to 72 h post-administration in healthy athymic mice. These results demonstrate the hydrogel's capacity to increase the residence time in the nasal cavity while providing the cells with a favorable environment for their viability. This study presents for the first time the use of thermosensitive hydrogels in nose-to-brain cell therapy, opening the possibility of increasing the delivery efficiency in future approaches in translational medicine. STATEMENT OF SIGNIFICANCE: This work highlights the potential of biomaterials, specifically hydrogels, in improving the effectiveness of cell therapy administered through the nose. The nose-to-brain route has been suggested as a non-invasive way to directly access the brain. However, delivering stem cells through this route poses a challenge since their viability must be preserved and cells can be swept away by nasal mucus. Earlier attempts at intranasal cell therapy have shown low efficiency, but still hold promise to the future. The hydrogels designed for this study can provide stem cells with a biocompatible environment and adhesion to the nasal atrium, easing the successful migration of viable cells to the brain.

2.
Artigo em Inglês | MEDLINE | ID: mdl-39307275

RESUMO

BACKGROUND AND OBJECTIVE: Nasoseptal or septal flaps extended to the floor of the fossa and inferior meatus are a resource in the reconstruction of extended endoscopic approaches. We propose the technique of sectioning and repositioning the inferior turbinate to facilitate the design of these extended pedicled flaps. MATERIAL AND METHODS: We evaluated 3 cases operated with a skull base lesion: a craniopharyngioma, a petroclival meningioma and a post-surgical fistula of cerebrospinal fluid in the cribiform plate, in which sectioning and repositioning of the inferior turbinate was performed prior to the design of a septal or nasoseptal flap extended to the floor and inferior meatus. To evaluate the anatomy and function of the inferior turbinate, we analyzed the results of acoustic rhinometry three months after surgery with and without vasoconstrictor. RESULTS: The pedicled flaps remained visible and vital on endoscopic examination. The area of the C notch obtained by acoustic rhinometry, in the nostril where the turbinate was manipulated, was in all three cases the narrowest area of the nasal cavity. The mean area for the C-notch was 0,34 cm2, 0,74 cm2 y de 0,30 cm2 at a distance from the nostril of 2,20 cm, 2,31 cm and 1,93 cm respectively. CONCLUSION: Performing a section and subsequent repositioning of the inferior turbinate, prior to designing an endonasal pedicled flap that includes the mucosa of the floor and inferior meatus, can greatly facilitate obtaining a larger reconstruction flap without affecting the functionality of the inferior turbinate itself.

3.
Artigo em Inglês | MEDLINE | ID: mdl-39218714

RESUMO

Pheochromocytomas and paragangliomas are rare neuroendocrine tumours. Around 20-25 % of patients develop metastases, for which there is an urgent need of prognostic markers and therapeutic stratification strategies. The presence of a MAML3-fusion is associated with increased metastatic risk, but neither the processes underlying disease progression, nor targetable vulnerabilities have been addressed. We have compiled a cohort of 850 patients, which has shown a 3.65 % fusion prevalence and represents the largest MAML3-positive series reported to date. While MAML3-fusions mainly cause single pheochromocytomas, we also observed somatic post-zygotic events, resulting in multiple tumours in the same patient. MAML3-tumours show increased expression of neuroendocrine-to-mesenchymal transition markers, MYC-targets, and angiogenesis-related genes, leading to a distinct tumour microenvironment with unique vascular and immune profiles. Importantly, our findings have identified MAML3-tumours specific vulnerabilities beyond Wnt-pathway dysregulation, such as a rich vascular network, and overexpression of PD-L1 and CD40, suggesting potential therapeutic targets.

4.
Int J Mol Sci ; 25(17)2024 Sep 05.
Artigo em Inglês | MEDLINE | ID: mdl-39273564

RESUMO

Cellular Communication Network Factor 2 (CCN2) is a matricellular protein implicated in cell communication and microenvironmental signaling. Overexpression of CCN2 has been documented in various cardiovascular pathologies, wherein it may exert either deleterious or protective effects depending on the pathological context, thereby suggesting that its role in the cardiovascular system is not yet fully elucidated. In this study, we aimed to investigate the effects of Ccn2 gene deletion on the progression of acute cardiac injury induced by doxorubicin (DOX), a widely utilized chemotherapeutic agent. To this end, we employed conditional knockout (KO) mice for the Ccn2 gene (CCN2-KO), which were administered DOX and compared to DOX-treated wild-type (WT) control mice. Our findings demonstrated that the ablation of CCN2 ameliorated DOX-induced cardiac dysfunction, as evidenced by improvements in ejection fraction (EF) and fractional shortening (FS) of the left ventricle. Furthermore, DOX-treated CCN2-KO mice exhibited a significant reduction in the gene expression and activation of oxidative stress markers (Hmox1 and Nfe2l2/NRF2) relative to DOX-treated WT controls. Additionally, the deletion of Ccn2 markedly attenuated DOX-induced cardiac fibrosis. Collectively, these results suggest that CCN2 plays a pivotal role in the pathogenesis of DOX-mediated cardiotoxicity by modulating oxidative stress and fibrotic pathways. These findings provide a novel avenue for future investigations to explore the therapeutic potential of targeting CCN2 in the prevention of DOX-induced cardiac dysfunction.


Assuntos
Fator de Crescimento do Tecido Conjuntivo , Doxorrubicina , Fibrose , Camundongos Knockout , Estresse Oxidativo , Animais , Doxorrubicina/efeitos adversos , Fator de Crescimento do Tecido Conjuntivo/metabolismo , Fator de Crescimento do Tecido Conjuntivo/genética , Camundongos , Estresse Oxidativo/efeitos dos fármacos , Deleção de Genes , Masculino , Miocárdio/metabolismo , Miocárdio/patologia , Camundongos Endogâmicos C57BL , Cardiotoxicidade/genética , Cardiotoxicidade/metabolismo
5.
J Mater Chem B ; 2024 Sep 13.
Artigo em Inglês | MEDLINE | ID: mdl-39268755

RESUMO

Research on high-field magnetic resonance imaging (HF-MRI) has been increased in recent years, aiming to improve diagnosis accuracy by increasing the signal-to-noise ratio and hence image quality. Conventional contrast agents (CAs) have important limitations for HF-MRI, with the consequent need for the development of new CAs. Among them, the most promising alternatives are those based on Dy3+ or Ho3+ compounds. Notably, the high atomic number of lanthanide cations would bestow a high capability for X-ray attenuation to such Dy or Ho-based compounds, which would also allow them to be employed as CAs for X-ray computed tomography (CT). In this work, we have prepared uniform NaDy(WO4)2 and NaHo(WO4)2 nanoparticles (NPs), which were dispersible under conditions that mimic the physiological media and were nontoxic for cells, meeting the main requirements for their use in vivo. Both NPs exhibited satisfactory magnetic relaxivities at 9.4 T, thus making them a promising alternative to clinical CAs for HF-MRI. Furthermore, after their intravenous administration in tumor-bearing mice, both NPs exhibited significant accumulation inside the tumor at 24 h, attributable to passive targeting by the enhanced permeability and retention (EPR) effect. Therefore, our NPs are suitable for the detection of tumors through HF-MRI. Finally, NaDy(WO4)2 NPs showed a superior X-ray attenuation capability than iohexol (commercial CT CA), which, along with their high r2 value, makes them suitable as the dual-probe for both HF-MRI and CT imaging, as demonstrated by in vivo experiments conducted using healthy mice.

6.
BMC Med Educ ; 24(1): 922, 2024 Aug 26.
Artigo em Inglês | MEDLINE | ID: mdl-39187824

RESUMO

BACKGROUND: The incidence of sexually transmitted infections (STIs) is increasing, especially among young people. Tools are needed to increase knowledge about sex education and STI prevention and treatment. Gamification can be a good training tool for both young people and health professionals. The primary objective of this study is to assess the impact of a training intervention on STI prevention, detection, and treatment in primary care professionals. METHODS/DESIGN: Multicentre cluster randomized controlled trial. Groups of primary care professionals will receive an intervention (online video game on sex education and STIs [SEXIT]) and will be compared with control groups that will not receive the intervention. Group assignments will be randomized by clusters. The study will consist of a pre-post evaluation of the intervention: a knowledge test will be administered before and after the intervention and 3 months after the intervention. This test will also be carried out on the same time sequence in the control groups. The impact of the training intervention will be assessed over a 6-month period, focusing on various variables associated with the clinical management of STIs. This evaluation entails the clinical records of diagnostic tests and antibiotic prescriptions related to the clinical approach to STIs. The required sample size is 262 (131 per group). DISCUSSION: Compared with those in the control group, improvements in knowledge and clinical behavioural outcomes after the intervention are expected for participants in the intervention groups. We plan to develop an educational video game to increase the knowledge about sexuality, STIs and violence. Protocol registered at ISRCTN with reference number ISRCTN17783607.


Assuntos
Educação Sexual , Saúde Sexual , Infecções Sexualmente Transmissíveis , Jogos de Vídeo , Feminino , Humanos , Masculino , Conhecimentos, Atitudes e Prática em Saúde , Atenção Primária à Saúde , Saúde Sexual/educação , Infecções Sexualmente Transmissíveis/prevenção & controle , Infecções Sexualmente Transmissíveis/diagnóstico , Ensaios Clínicos Controlados Aleatórios como Assunto , Estudos Multicêntricos como Assunto
7.
Database (Oxford) ; 20242024 Aug 13.
Artigo em Inglês | MEDLINE | ID: mdl-39137905

RESUMO

Dynamic changes in protein glycosylation impact human health and disease progression. However, current resources that capture disease and phenotype information focus primarily on the macromolecules within the central dogma of molecular biology (DNA, RNA, proteins). To gain a better understanding of organisms, there is a need to capture the functional impact of glycans and glycosylation on biological processes. A workshop titled "Functional impact of glycans and their curation" was held in conjunction with the 16th Annual International Biocuration Conference to discuss ongoing worldwide activities related to glycan function curation. This workshop brought together subject matter experts, tool developers, and biocurators from over 20 projects and bioinformatics resources. Participants discussed four key topics for each of their resources: (i) how they curate glycan function-related data from publications and other sources, (ii) what type of data they would like to acquire, (iii) what data they currently have, and (iv) what standards they use. Their answers contributed input that provided a comprehensive overview of state-of-the-art glycan function curation and annotations. This report summarizes the outcome of discussions, including potential solutions and areas where curators, data wranglers, and text mining experts can collaborate to address current gaps in glycan and glycosylation annotations, leveraging each other's work to improve their respective resources and encourage impactful data sharing among resources. Database URL: https://wiki.glygen.org/Glycan_Function_Workshop_2023.


Assuntos
Curadoria de Dados , Polissacarídeos , Polissacarídeos/metabolismo , Humanos , Curadoria de Dados/métodos , Glicosilação , Itália , Biocuradoria
8.
J Histochem Cytochem ; 72(8-9): 585-599, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-39180315

RESUMO

Primary malignancies of the central nervous system account for 2% of all cancers in adults and almost 15% in children under 15 years of age. The prognosis of brain anaplastic cancers and glioblastomas remains extremely poor, with devastating survival expectative, and new molecular markers and therapeutic targets are essential. Epigenetic changes constitute an extensive field for the development of new diagnostic and therapeutic strategies. Histone acetyl transferase-1 (HAT1) has merged as a potential prognostic marker and therapy target for different malignancies. Data repository analysis showed HAT1 mRNA overexpression in gliomas and has been described its alternative splicing in glioblastomas. Using immunohistochemical and aptahistochemical methods, we analyzed the expression of HAT1 in meningiomas, oligodendrogliomas, and astroglial cancers. We observed that HAT1 overexpression is associated with the most aggressive tumor types and the worse prognosis, as well as with a higher probability of early relapse in meningiomas. Its cytosolic localization correlates with tumor progression and prognosis. Aptamers, synthetic oligonucleotides capable to bind and inhibit a wide variety of targets, are considered as promising diagnostic and therapeutic tools. Aptahistochemistry using the aptamer apHAT610 offered superior results in comparison with the antibody used, as a good example of the potential of aptamers as diagnostic tools for histopathology.


Assuntos
Neoplasias Encefálicas , Histona Acetiltransferases , Imuno-Histoquímica , Neoplasias Meníngeas , Humanos , Neoplasias Encefálicas/patologia , Neoplasias Encefálicas/diagnóstico , Neoplasias Encefálicas/metabolismo , Neoplasias Encefálicas/genética , Neoplasias Meníngeas/patologia , Neoplasias Meníngeas/diagnóstico , Neoplasias Meníngeas/genética , Neoplasias Meníngeas/metabolismo , Prognóstico , Feminino , Masculino , Pessoa de Meia-Idade , Histona Acetiltransferases/genética , Histona Acetiltransferases/metabolismo , Histona Acetiltransferases/análise , Adulto , Idoso , Glioma/patologia , Glioma/diagnóstico , Glioma/metabolismo , Glioma/genética , Meningioma/patologia , Meningioma/diagnóstico , Meningioma/genética , Meningioma/metabolismo , Meningioma/enzimologia , Biomarcadores Tumorais/genética , Biomarcadores Tumorais/metabolismo , Biomarcadores Tumorais/análise , Gradação de Tumores
9.
Nat Aging ; 4(9): 1279-1289, 2024 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-39122839

RESUMO

The Integrated Care for Older People (ICOPE) program is a healthcare pathway that uses a screening test for intrinsic capacity (IC) as its entry point. However, real-life data informing on how IC domains cluster and change over time, as well as their clinical utility, are lacking. Using primary healthcare screening data from more than 20,000 French adults 60 years of age or older, this study identified four clusters of IC impairment: 'Low impairment' (most prevalent), 'Cognition+Locomotion+Hearing+Vision', 'All IC impaired' and 'Psychology+Vitality+Vision'. Compared to individuals with 'Low impairment', those in the other clusters had higher likelihood of having frailty and limitations in both activities of daily living (ADL) and instrumental activities of daily living (IADL), with the strongest associations being observed for 'All IC impaired'. This study found that ICOPE screening might be a useful tool for patient risk stratification in clinical practice, with a higher number of IC domains impaired at screening indicating a higher probability of functional decline.


Assuntos
Atividades Cotidianas , Humanos , Idoso , Feminino , Masculino , Pessoa de Meia-Idade , Idoso de 80 Anos ou mais , Avaliação Geriátrica/métodos , França/epidemiologia , Programas de Rastreamento/métodos , Fragilidade/diagnóstico , Fragilidade/epidemiologia , Atenção Primária à Saúde
10.
Nutrients ; 16(16)2024 Aug 09.
Artigo em Inglês | MEDLINE | ID: mdl-39203762

RESUMO

Amyotrophic Lateral Sclerosis (ALS) is a progressive neurodegenerative disease frequently accompanied by malnutrition due to weight loss, increased energy expenditure, and muscle mass loss. This study aimed to evaluate morphofunctional assessment tools as predictors of malnutrition and to investigate their relationship with muscle status and disease severity in ALS patients. A cross-sectional study was conducted with 45 ALS patients at the San Cecilio University Hospital in Granada. Malnutrition was assessed using the Global Leadership Initiative on Malnutrition (GLIM) criteria. Morphofunctional assessment was performed using Bioimpedance Vectorial Analysis (BIVA), handgrip strength (HGS), and Short Physical Performance Battery (SPPB). Malnutrition prevalence was 38% according to GLIM criteria. Significant differences were observed between malnourished and non-malnourished groups in age (70 ± 9 vs. 62 ± 10 years, p = 0.01), sex (female prevalence: 58.8% vs. 25.0%, p = 0.02), dysphagia prevalence (83% vs. 29%, p < 0.001), PEG/PRG use (35.3% vs. 3.6%, p = 0.01), and ALSFRS-R scores (30 ± 12 vs. 34 ± 12, p = 0.02). Malnourished patients had lower values in anthropometric measurements, muscle mass obtained by BIVA, and phase angle (PA) (4.05 ± 0.8° vs. 5.09 ± 0.8°, p < 0.001). No significant differences were found in muscle strength or functional status. PA showed significant correlations with muscle strength (r = 0.52, p < 0.001) and muscle mass measures (r = 0.48, p < 0.001). Moreover, PA was associated with poorer disease progression and physical performance. In our sample, BIVA metrics such as PA (<4.3°), SPA (<-0.8), body cell mass (<9.2 kg/m), and extracellular water (>49.75%) were identified as malnutrition risk factors. The study underscores the critical importance of comprehensive morphofunctional assessment and the use of advanced diagnostic criteria, for early identification and intervention in malnutrition among people with ALS. Further research is warranted to validate these findings and develop targeted nutritional strategies into routine clinical practice.


Assuntos
Esclerose Lateral Amiotrófica , Desnutrição , Avaliação Nutricional , Humanos , Esclerose Lateral Amiotrófica/complicações , Esclerose Lateral Amiotrófica/fisiopatologia , Feminino , Masculino , Desnutrição/epidemiologia , Desnutrição/diagnóstico , Pessoa de Meia-Idade , Idoso , Estudos Transversais , Força da Mão , Prevalência , Estado Nutricional , Impedância Elétrica , Índice de Gravidade de Doença
11.
Pharmaceutics ; 16(8)2024 Aug 20.
Artigo em Inglês | MEDLINE | ID: mdl-39204437

RESUMO

3,4-Methylenedioxymethamphetamine (MDMA) is a synthetic amphetamine derivative with notable psychoactive properties and emerging therapeutic potential, particularly for treating post-traumatic stress disorders (PTSD) and substance use disorders. However, its use remains controversial due to inter-individual variability influenced by both environmental and genetic factors. In this context, pharmacogenomics could play a crucial role in guiding MDMA treatment by identifying individuals with genetic predispositions affecting their response to MDMA. Tailoring treatment plans based on individual's genetic makeup may enhance therapeutic outcomes and minimize adverse effects, leading to safer and more effective use of MDMA in clinical settings. Literature analysis reveals that the influence of genetic variants within genes encoded for enzymes involved in MDMA metabolism and/or pharmacodynamics (PD) targets have been relatively under-investigated in humans. Some studies have pointed out associations between MDMA-induced effects and polymorphisms. For example, the catechol-O-methyltransferase (COMT) Val158Met polymorphism has been associated with cognitive and cardiovascular MDMA-induced effects. Similarly, polymorphisms in the serotonin-linked promoter region (5HTTLPR) have been associated with several MDMA-induced adverse effects including mood disorders. However, despite these findings, only a few associations have been highlighted. Furthermore, some genes encoded for MDMA targets have been only poorly investigated, representing a significant research gap. These observations underscore the need for large-scale, controlled pharmacogenomics studies focusing on a broad panel of genes involved into MDMA pharmacokinetics and PD. Such studies could provide critical insights for optimizing MDMA's therapeutic use and minimizing its risks.

12.
Nat Commun ; 15(1): 7258, 2024 Aug 23.
Artigo em Inglês | MEDLINE | ID: mdl-39179577

RESUMO

The specificity of gene expression during development requires the insulation of regulatory domains to avoid inappropriate enhancer-gene interactions. In vertebrates, this insulator function is mostly attributed to clusters of CTCF sites located at topologically associating domain (TAD) boundaries. However, TAD boundaries allow some physical crosstalk across regulatory domains, which is at odds with the specific and precise expression of developmental genes. Here we show that developmental genes and nearby clusters of CTCF sites cooperatively foster the robust insulation of regulatory domains. By genetically dissecting a couple of representative loci in mouse embryonic stem cells, we show that CTCF sites prevent undesirable enhancer-gene contacts (i.e. physical insulation), while developmental genes preferentially contribute to regulatory insulation through non-structural mechanisms involving promoter competition rather than enhancer blocking. Overall, our work provides important insights into the insulation of regulatory domains, which in turn might help interpreting the pathological consequences of certain structural variants.


Assuntos
Fator de Ligação a CCCTC , Elementos Facilitadores Genéticos , Células-Tronco Embrionárias Murinas , Regiões Promotoras Genéticas , Animais , Fator de Ligação a CCCTC/metabolismo , Fator de Ligação a CCCTC/genética , Camundongos , Regiões Promotoras Genéticas/genética , Elementos Facilitadores Genéticos/genética , Células-Tronco Embrionárias Murinas/metabolismo , Regulação da Expressão Gênica no Desenvolvimento , Elementos Isolantes/genética
13.
Chem Sci ; 2024 Aug 06.
Artigo em Inglês | MEDLINE | ID: mdl-39149220

RESUMO

A photoredox catalytic strategy has been developed to enable the functionalization of a variety of commercially available, structurally different radical precursors by the use of a bench-stable isonitrile as an efficient cyanating reagent. Specifically, a radical-based reaction has provided a mild and convenient procedure for the cyanation of primary, secondary and tertiary radicals derived from widely accessible sp3-hybridized carboxylic acids, alcohols and halides under visible light irradiation. The reaction tolerates a variety of functional groups and it represents a complementary method for the cyanation of structurally different scaffolds that show diverse native functionalities, expanding the scope of previously reported methodologies.

14.
ChemMedChem ; : e202400321, 2024 Aug 01.
Artigo em Inglês | MEDLINE | ID: mdl-39087920

RESUMO

Hearing loss (HL) affects more than 5% of the global population, with projections indicating an impact of up to 50% on young individuals in the next years. HL treatments remain limited due to the inner ear's hermeticism. HL often involves inflammatory processes, underscoring the need for enhanced delivery of antiinflammatory agents to the inner ear. Our research focuses on the development of a directed therapy based on magnetic nanoparticles (MNPs). We previously synthesized biocompatible folic acid-coated iron oxide-core nanoparticles (MNPs@FA) as potential carriers for the anti-inflammatory Diclofenac (Dfc). This study aims to incorporate Dfc onto MNPs@FA to facilitate targeted drug delivery to the inner ear. Through optimizing the loading procedure, we achieved optimal loading capacity. Dfc release was studied in the simulated target fluid and the administration vehicle. Complete characterization is also shown. In vitro biocompatibility testing ensured the biosafety of the resulting formulation. Subsequent ex vivo targeting assays on murine cochleae validated the nanosystems' ability to penetrate the round window membrane, one of the main HL therapy barriers. These findings serve as validation before continuing to more complex in vivo studies. Together, the data here presented represent an advancement in addressing unmet medical needs in HL therapy.

15.
J Clin Med ; 13(16)2024 Aug 16.
Artigo em Inglês | MEDLINE | ID: mdl-39200983

RESUMO

Cardiogenic shock (CS) is a complex multifactorial clinical syndrome of end-organ hypoperfusion that could be associated with multisystem organ failure, presenting a diverse range of causes and symptoms. Despite improving survival in recent years due to new advancements, CS still carries a high risk of severe morbidity and mortality. Recent research has focused on improving early detection and understanding of CS through standardized team approaches, detailed hemodynamic assessment, and selective use of temporary mechanical circulatory support devices, leading to better patient outcomes. This review examines CS pathophysiology, emerging classifications, current drug and device therapies, standardized team management strategies, and regionalized care systems aimed at optimizing shock outcomes. Furthermore, we identify gaps in knowledge and outline future research needs.

16.
J Clin Med ; 13(16)2024 Aug 22.
Artigo em Inglês | MEDLINE | ID: mdl-39201098

RESUMO

Background: University students often experience psychological strains such as academic stress, particularly as they approach the transition into the workforce. This stress may have been heightened for nursing students who completed internships during the COVID-19 pandemic. This study aims to analyze the impact of the COVID-19 pandemic on the perceived stress levels of undergraduate nursing students. Methodology: A cross-sectional descriptive observational study was conducted using the Spanish version of the PSS-10 scale, a validated reduction of the English version PSS-14, to evaluate perceived stress. The responses are Likert-type with a total score range of 0 to 40. Questionnaires were distributed electronically to nursing students across all academic years who were engaged in clinical practice. Participation was voluntary. Results: The study included 487 students, the majority of whom were women (78.4%) with an average age of 23.51 years. Most participants were in their third and fourth years (67%). The mean perceived stress score was 20.65 (SD = 5.62) out of a possible 40, indicating moderate stress levels. Statistically significant differences in perceived stress were found between genders, with women reporting higher stress levels than men (Mann-Whitney U = 15,380.000; p < 0.001). Additionally, a significant correlation was observed between the overall perceived stress score and gender, as well as between specific items on the PSS-10 scale and gender, highlighting the importance of gender-specific stress management interventions. Conclusions: Nursing students reported moderate levels of perceived stress, with women experiencing higher stress levels than men. These findings highlight the need for targeted stress management interventions for nursing students, especially during health crises. Addressing gender-specific stressors and fostering a supportive educational environment will enhance students' well-being, academic success, and professional preparedness.

17.
Health Psychol ; 2024 Aug 15.
Artigo em Inglês | MEDLINE | ID: mdl-39146069

RESUMO

OBJECTIVE: Caregivers' ambivalent feelings toward the care recipient have been found to be associated with depression and anxiety. There is no research linking caregivers' ambivalent feelings and cardiovascular risk. This study was aimed to analyze longitudinally the effect of ambivalence on caregivers' cardiovascular risk, defined by circulating levels of high-sensitivity C-reactive protein, interleukin-6 (IL-6), and D-dimer. METHOD: Participants were 121 dementia family caregivers who were assessed three times during a 2-year period. Sociodemographic and health variables, behavioral and psychological symptoms of dementia (BPSD), ambivalent feelings, and C-reactive protein (CRP), IL-6, and D-dimer values were assessed. Mixed linear models were used to analyze the association between variables, including testing whether ambivalent feelings moderated the links between BPSD and biomarkers. RESULTS: Increases over time in D-dimer were associated with increases in ambivalence, older age, female gender, and body mass index (BMI). Increases over time in CRP were associated with increases in BMI, older age, female gender, and the interaction of BPSD with caregivers' ambivalent feelings. The moderation analysis showed that increased BPSD was significantly associated with increased CRP when caregivers experienced high levels of ambivalence (p = .006). In contrast, BPSD were not significantly associated with CRP when caregivers experienced low levels of ambivalence (p = .73). Increases in IL-6 were associated with female gender and BMI. The tested model explained 42.85%, 33.15%, and 5.36% of longitudinal variance in CRP, D-dimer, and IL-6 levels, respectively. CONCLUSION: The findings suggest that high ambivalent feelings are relevant for understanding cardiovascular vulnerability in dementia caregivers. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

18.
Waste Manag ; 189: 114-126, 2024 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-39182277

RESUMO

This study optimized the anaerobic digestion (AD) of separated collected organic fractions of municipal solid waste (OFMSW) to produce energy and digestate as biofertilizer. Due to OFMSW's partial recalcitrance to degradation, enzymatic (UPP2, MCPS, USC4, USE2, A. niger) and physical (mechanical blending, heating, hydrodynamic cavitation) pre-treatments were tested. Experimental and modeling approaches were used to compare AD performance regarding energy sustainability and digestate quality. Digestate was separated into solid and liquid fractions, and then chemically and physically characterized by investigating the nutrient release mechanisms. Principal Component Analysis was applied, equally weighing energy and digestate productions. Unlike previous studies focusing only on biogas, this study evaluated the effects of pre-treatments on both biogas and digestate production, viewing AD as a biorefinery process for urban waste valorization. Results showed that all pre-treatments were energetically sustainable, but enzymatic pre-treatments yielded digestates richer in nutrients (increase of 80% N, 200% P and 150% K as compared to OFMSW) and with greater organic matter degradation compared to physical pre-treatments. The liquid fraction of digestate from enzymatic pre-treatments had higher nutrient concentrations, while those from physical pre-treatments had more balanced nutrient content, making them more suitable for fertigation.


Assuntos
Biocombustíveis , Eliminação de Resíduos , Resíduos Sólidos , Anaerobiose , Biocombustíveis/análise , Resíduos Sólidos/análise , Eliminação de Resíduos/métodos , Agricultura/métodos , Reatores Biológicos
20.
J Stroke Cerebrovasc Dis ; 33(11): 107906, 2024 Aug 08.
Artigo em Inglês | MEDLINE | ID: mdl-39127180

RESUMO

BACKGROUND: Mechanical Thrombectomy (MT) is an efficacious treatment for severe acute ischemic stroke patients. However, access to MT is limited in many parts of the world, partly due to economic barriers. The purpose of this systematic review is to provide an updated frame about the socioeconomic impact of MT. METHODS: To carry out this systematic review we used the PRISMA guidelines. We included scientific articles analyzing the socioeconomic impact of MT for acute ischemic stroke, in which MT was compared to best medical therapy (BMT). The online databases of Pubmed, Scopus and Web of Science were used as main sources of information. To carry out the comparative analysis, the incremental cost-effectiveness ratio (ICER) was used, relating the cost to quality-adjusted life-year (QALY). Risk of bias was assessed with the Consensus Health Economic Criteria (CHEC) and the Consolidated Health Economic Evaluation Reporting Standards (CHEERS). RESULTS: Eight hundred thirty-two studies were identified in this systematic review. As a result, studies that used cost-effectiveness analysis show that MT saves costs in the long term and cost-utility analysis show that the cost per QALY is reasonable with a mean ICER value of $14242.36/QALY. CONCLUSIONS: MT has a favorable socioeconomic impact, as derived from cost-effectiveness and cost-utility analyses. Therefore, public policies should encourage the implementation of MT for stroke patients around the world.

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