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1.
Arq. bras. oftalmol ; 88(1): e2023, 2025. tab, graf
Artículo en Inglés | LILACS-Express | LILACS | ID: biblio-1568845

RESUMEN

ABSTRACT Purpose: To characterize the extracellular vesicle protein cargo in the aqueous humor and plasma of patients with ocular toxoplasmosis. Methods: Aqueous humor and plasma were collected from six patients with active ocular toxoplasmosis and six patients with cataract. Extracellular vesicles were isolated, and western blotting and mass spectrometry were performed for protein analysis. Results: All plasma samples from patients with ocular toxoplasmosis and cataract were positive for the tetraspanins CD63 and TSG101. However, the aqueous humor from patients with ocular toxoplasmosis was positive only for CD63. Sixty-seven new unreported proteins were identified in the aqueous humor and plasma of patients with the ocular toxoplasmosis and cataract. Of the 67 proteins, 10 and 7 were found only in the cataract and ocular toxoplasmosis groups, respectively. In general, these proteins were involved in immune system activation and retina homeostasis and were related to infections and retina-associated diseases. Conclusion: The distinct protein signatures between ocular toxoplasmosis and cataract may be helpful in the differential diagnosis of ocular toxoplasmosis. However, more studies are needed to better understand the role of these proteins in the pathogenesis of ocular toxoplasmosis.

2.
Arq. bras. oftalmol ; 88(1): e2023, 2025. graf
Artículo en Inglés | LILACS-Express | LILACS | ID: biblio-1568850

RESUMEN

ABSTRACT A patient presented with corneoscleral thinning five months after the treatment of suspected ocular squamous surface neoplasia with mitomycin-C and interferon. For tectonic and aesthetic purposes, we decided to perform lamellar corneoscleral transplantation. The approach used established new tectonic support and corneal homeostasis. This technique might be an option in similar cases.

3.
Artículo en Inglés | MEDLINE | ID: mdl-39255097

RESUMEN

Virtual Reality (VR) systems are widely used, and it is essential to know if spatial perception in virtual environments (VEs) is similar to reality. Research indicates that users tend to underestimate distances in VR. Prior work suggests that actual distance judgments in VR may not always match the users self-reported preference of where they think they most accurately estimated distances. However, no explicit investigation evaluated whether user preferences match actual performance in a spatial judgment task. We used blind walking to explore potential dissimilarities between actual distance estimates and user-selected preferences of visual complexities, VE conditions, and targets. Our findings show a gap between user preferences and actual performance when visual complexities were varied, which has implications for better visual perception understanding, VR applications design, and research in spatial perception, indicating the need to calibrate and align user preferences and true spatial perception abilities in VR.

4.
Cochrane Database Syst Rev ; 9: CD011197, 2024 Sep 17.
Artículo en Inglés | MEDLINE | ID: mdl-39287086

RESUMEN

BACKGROUND: Atrial fibrillation (AF), the most prevalent cardiac arrhythmia, disrupts the heart's rhythm through numerous small re-entry circuits in the atrial tissue, leading to irregular atrial contractions. The condition poses significant health risks, including increased stroke risk, heart failure, and reduced quality of life. Given the complexity of AF and its growing incidence globally, exercise-based cardiac rehabilitation (ExCR) may provide additional benefits for people with AF or those undergoing routine treatment for the condition. OBJECTIVES: To assess the benefits and harms of ExCR compared with non-exercise controls for people who currently have AF or who have been treated for AF. SEARCH METHODS: We searched the following electronic databases: CENTRAL in the Cochrane Library, MEDLINE Ovid, Embase Ovid, PsycINFO Ovid, Web of Science Core Collection Thomson Reuters, CINAHL EBSCO, LILACS BIREME, and two clinical trial registers on 24 March 2024. We imposed no language restrictions. SELECTION CRITERIA: We included randomised clinical trials (RCTs) that investigated ExCR interventions compared with any type of non-exercise control. We included adults 18 years of age or older with any subtype of AF or those who had received treatment for AF. DATA COLLECTION AND ANALYSIS: Five review authors independently screened and extracted data in duplicate. We assessed risk of bias using Cochrane's RoB 1 tool as outlined in the Cochrane Handbook for Systematic Reviews of Interventions. We assessed clinical and statistical heterogeneity by visual inspection of the forest plots and by using standard Chi² and I² statistics. We performed meta-analyses using random-effects models for continuous and dichotomised outcomes. We calculated standardised mean differences where different scales were used for the same outcome. We used the GRADE approach to assess the certainty of the evidence. MAIN RESULTS: We included 20 RCTs involving a total of 2039 participants with AF. All trials were conducted between 2006 and 2024, with a follow-up period ranging from eight weeks to five years. We assessed the certainty of evidence as moderate to very low. Five trials assessed comprehensive ExCR programmes, which included educational or psychological interventions, or both; the remaining 15 trials compared exercise-only cardiac rehabilitation with controls. The overall risk of bias in the included studies was mixed. Details on random sequence generation, allocation concealment, and use of intention-to-treat analysis were typically poorly reported. Evidence from nine trials (n = 1173) suggested little to no difference in mortality between ExCR and non-exercise controls (risk ratio (RR) 1.06, 95% confidence interval (CI) 0.76 to 1.49; I² = 0%; 101 deaths; low-certainty evidence). Based on evidence from 10 trials (n = 825), ExCR may have little to no effect on SAEs (RR 1.30, 95% CI 0.63 to 2.67; I² = 0%; 28 events; low-certainty evidence). Evidence from four trials (n = 378) showed that ExCR likely reduced AF recurrence (measured via Holter monitoring) compared to controls (RR 0.70, 95% CI 0.56 to 0.88; I² = 2%; moderate-certainty evidence). ExCR may reduce AF symptom severity (mean difference (MD) -1.59, 95% CI -2.98 to -0.20; I² = 61%; n = 600; low-certainty evidence); likely reduces AF symptom burden (MD -1.61, 95% CI -2.76 to -0.45; I² = 0%; n = 317; moderate-certainty evidence); may reduce AF episode frequency (MD -1.29, 95% CI -2.50 to -0.07; I² = 75%; n = 368; low-certainty evidence); and likely reduces AF episode duration (MD -0.58, 95% CI -1.14 to -0.03; I² = 0%; n = 317; moderate-certainty evidence), measured via the AF Severity Scale (AFSS) questionnaire. Moderate-certainty evidence from six trials (n = 504) showed that ExCR likely improved the mental component summary measure in health-related quality of life (HRQoL) of the 36-item Short Form Health Survey (SF-36) (MD 2.66, 95% CI 1.22 to 4.11; I² = 2%), but the effect of ExCR on the physical component summary measure was very uncertain (MD 1.75, 95% CI -0.31 to 3.81; I² = 52%; very low-certainty evidence). ExCR also may improve individual components of HRQoL (general health, vitality, emotional role functioning, and mental health) and exercise capacity (peak oxygen uptake (VO2peak) and 6-minute walk test) following ExCR. The effects of ExCR on serious adverse events and exercise capacity were consistent across different models of ExCR delivery: centre compared to home-based, exercise dose, exercise only compared to comprehensive programmes, and aerobic training alone compared to aerobic plus resistance programmes. Using univariate meta-regression, there was evidence of significant association between location of trial and length of longest follow-up on exercise capacity. AUTHORS' CONCLUSIONS: Due to few randomised participants and typically short-term follow-up, the impact of ExCR on all-cause mortality or serious adverse events for people with AF is uncertain. ExCR likely improves AF-specific measures including reduced AF recurrence, symptom burden, and episode duration, as well as the mental components of HRQoL. ExCR may improve AF symptom severity, episode frequency, and VO2peak. Future high-quality RCTs are needed to assess the benefits of ExCR for people with AF on patient-relevant outcomes including AF symptom severity and burden, AF recurrence, AF-specific quality of life, and clinical events such as mortality, readmissions, and serious adverse events. High-quality trials are needed to investigate how AF subtype and clinical setting (i.e. primary and secondary care) may influence ExCR effectiveness.


Asunto(s)
Fibrilación Atrial , Rehabilitación Cardiaca , Terapia por Ejercicio , Calidad de Vida , Ensayos Clínicos Controlados Aleatorios como Asunto , Humanos , Fibrilación Atrial/rehabilitación , Rehabilitación Cardiaca/métodos , Terapia por Ejercicio/métodos , Sesgo , Accidente Cerebrovascular/complicaciones , Adulto , Persona de Mediana Edad , Anciano , Femenino , Masculino
5.
J Infect Public Health ; 17(10): 102541, 2024 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-39270470

RESUMEN

BACKGROUND: Effective and rapid diagnostic strategies are required to manage antibiotic resistance in Klebsiella pneumonia (KP). This study aimed to design an artificial intelligence-clinical decision support system (AI-CDSS) using matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) and machine learning for the rapid detection of ceftazidime-avibactam (CZA) resistance in KP to improve clinical decision-making processes. METHODS: Out of 107,721 bacterial samples, 675 specimens of KP with suspected multi-drug resistance were selected. These specimens were collected from a tertiary hospital and four secondary hospitals between 2022 and 2023 to evaluate CZA resistance. We used MALDI-TOF MS and machine learning to develop an AI-CDSS with enhanced speed of resistance detection. RESULTS: Machine learning models, especially light gradient boosting machines (LGBM), exhibited an area under the curve (AUC) of 0.95, indicating high accuracy. The predictive models formed the core of our newly developed AI-CDSS, enabling clinical decisions quicker than traditional methods using culture and antibiotic susceptibility testing by a day. CONCLUSIONS: The study confirms that MALDI-TOF MS, integrated with machine learning, can swiftly detect CZA resistance. Incorporating this insight into an AI-CDSS could transform clinical workflows, giving healthcare professionals immediate, crucial insights for shaping treatment plans. This approach promises to be a template for future anti-resistance strategies, emphasizing the vital importance of advanced diagnostics in enhancing public health outcomes.


Asunto(s)
Antibacterianos , Inteligencia Artificial , Compuestos de Azabiciclo , Ceftazidima , Sistemas de Apoyo a Decisiones Clínicas , Combinación de Medicamentos , Farmacorresistencia Bacteriana Múltiple , Infecciones por Klebsiella , Klebsiella pneumoniae , Espectrometría de Masa por Láser de Matriz Asistida de Ionización Desorción , Klebsiella pneumoniae/efectos de los fármacos , Ceftazidima/farmacología , Humanos , Infecciones por Klebsiella/tratamiento farmacológico , Infecciones por Klebsiella/diagnóstico , Infecciones por Klebsiella/microbiología , Compuestos de Azabiciclo/farmacología , Compuestos de Azabiciclo/uso terapéutico , Antibacterianos/farmacología , Antibacterianos/uso terapéutico , Espectrometría de Masa por Láser de Matriz Asistida de Ionización Desorción/métodos , Aprendizaje Automático , Pruebas de Sensibilidad Microbiana/métodos
6.
Explor Res Clin Soc Pharm ; 15: 100497, 2024 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-39263194

RESUMEN

Professionalism represents the ethical contract that binds professionals and society. Its technical aspects, such as the professional practice model, form the foundation for attitudinal and behavioral characteristics, including the fiduciary relationship between pharmacists and patients. Despite significant interest in the topic, contextualizing professionalism proves to be a challenging endeavor, relying on collaboration among formal leaders, academics, and practitioners in the field. Consequently, defining, understanding, teaching, and evaluating pharmaceutical professionalism contribute to shape societal perceptions and the understanding of pharmacists and students, who may occasionally struggle to grasp the underlying rationale behind professional practices. Moreover, contextualizing professionalism entails addressing various challenges, such as fostering support for professionalism and its adaptation, which encompasses pharmacists' performance across diverse clinical services, their interpersonal interactions with patients, families, communities, and fellow healthcare professionals, as well as personal job satisfaction amidst obstacles as job insecurity, ethical dilemmas, and compromised autonomy.

7.
Nature ; 633(8029): 338-343, 2024 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-39261617

RESUMEN

The presence of disorder substantially influences the behaviour of physical systems. It can give rise to slow or glassy dynamics, or to a complete suppression of transport as in Anderson insulators1, where normally extended wavefunctions such as light fields or electronic Bloch waves become exponentially localized. The combined effect of disorder and interactions is central to the richness of condensed-matter physics2. In bosonic systems, it can also lead to additional quantum states such as the Bose glass3,4-an insulating but compressible state without long-range phase coherence that emerges in disordered bosonic systems and is distinct from the well-known superfluid and Mott insulating ground states of interacting bosons. Here we report the experimental realization of the two-dimensional Bose glass using ultracold atoms in an eight-fold symmetric quasicrystalline optical lattice5. By probing the coherence properties of the system, we observe a Bose-glass-to-superfluid transition and map out the phase diagram in the weakly interacting regime. We furthermore demonstrate that it is not possible to adiabatically traverse the Bose glass on typical experimental timescales by examining the capability to restore coherence and discuss the connection to the expected non-ergodicity of the Bose glass. Our observations are in good agreement with recent quantum Monte Carlo predictions6 and pave the way for experimentally testing the connection between the Bose glass, many-body localization and glassy dynamics more generally7,8.

8.
J Clin Med ; 13(17)2024 Sep 06.
Artículo en Inglés | MEDLINE | ID: mdl-39274504

RESUMEN

Background: Managing shock, a life-threatening emergency, is challenging. The influence of the initial misclassification of undifferentiated hypotension (UH) in the emergency department (ED) on patients' outcomes remains uninvestigated. The aim of this study was to investigate whether the initial misclassification of UH in the ED affects patients' clinical outcomes. Materials and Methods: This prospective observational study enrolled 270 non-traumatic adult patients with UH who had visited the ED of National Taiwan University Hospital between July 2020 and January 2022. The patients were divided into same-diagnosis and different-diagnosis groups, depending on the consistency between the initial and final classifications of shock. The outcome was survival to discharge. The clinical variables, management, and outcomes were compared between the groups. Results: A total of 39 of 270 patients (14.4%) were in the different-diagnosis group. Most misclassified patients were initially diagnosed as having hypovolemic shock (HS, n = 29) but finally diagnosed as having distributive shock (DS, n = 28) or cardiogenic shock (n = 1). When compared with the same-diagnosis group, the different-diagnosis group had higher hospitalization (94.9% vs. 81.4%, p = 0.023) but lower ED discharge (5.1% vs. 16.5%, p = 0.046) rates. Logistic regression analysis showed that the HS initially diagnosed was associated with an increased risk of misclassification (odds ratio [OR] = 14.731, 95% confidence interval [CI] = 3.572-60.749, p < 0.001). However, the survival to discharge did not differ between the two groups. DS, when finally diagnosed instead of the initial misclassification, was associated with in-hospital mortality (OR = 0.317, 95%CI = 0.124-0.810, p = 0.016). Conclusions: The misclassification of UH in the ED is not rare, particularly in patients with DS, who are likely to be initially misdiagnosed with HS. Although misclassification may increase hospitalization and decrease ED discharge, it does not affect survival to discharge.

9.
Digit Health ; 10: 20552076241261886, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-39291157

RESUMEN

Objective: Counteracting feelings of loneliness among older adults underscores the need to improve social well-being, for example, by sharing small stories. Interestingly, virtual representation of nature (VN) can stimulate social aspirations and trigger associations, which could be used as conversational material. Especially nature's characteristics of mystery and spaciousness seem promising. Therefore, it was investigated whether VN can elicit small stories in older adults using a randomized 2 (mystery: low vs. high) × 2 (spaciousness: low vs. high) design. Methods: In total 118 participants (60 years and older) were recruited. Small stories, nature-relatedness, available nature opportunities and demographics were measured. The small stories were analysed with respect to story elements (sum range: 0-4) and storytelling characteristics (ease of storytelling, valence, social intention). Results: The VN were able to elicited small stories: 97% (N = 115) contained at least one story element. Moreover, when participants felt more related to nature and assigned more positive valence to their story, they also had stronger intentions to use their story for social interaction. The VN characteristics of mystery and spaciousness showed no effects. Conclusion: Not so much the characteristics of nature (mystery and spaciousness) as the characteristics of the participants (nature-relatedness) played an important role in eliciting and sharing small stories.

10.
J Vasc Bras ; 23: e20220146, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-39286303

RESUMEN

Endovenous thermal ablation is now one of the most important techniques for treating chronic venous insufficiency. Technical refinements and technological innovations have made it possible to employ the method not only in the saphenous veins, but also to treat superficial veins such as varicose tributaries. We describe a technique for surgical treatment of varicose veins using endovenous laser thermal ablation employing multiple punctures and present the experience at our service with analysis of 601 cases operated using this technique. Thermoablative treatment of tributary veins with multiple puncture sites expands the applications for endolaser in treatment of lower limb varicose veins, providing, comprehensive, safe, and effective treatment.

12.
bioRxiv ; 2024 Sep 08.
Artículo en Inglés | MEDLINE | ID: mdl-39282286

RESUMEN

Förster resonance energy transfer (FRET) between fluorescent proteins (FPs) is widely used in the design of genetically encoded fluorescent biosensors, which are powerful tools for monitoring the dynamics of biochemical activities in live cells. FRET ratio, defined as the ratio between acceptor and donor signals, is often used as a proxy for the actual FRET efficiency, which must be corrected for signal crosstalk using donor-only and acceptor-only samples. However, the FRET ratio is highly sensitive to imaging conditions, making direct comparisons across different experiments and over time challenging. Inspired by a method for multiplexed biosensor imaging using barcoded cells, we reasoned that calibration standards with fixed FRET efficiency can be introduced into a subset of cells for normalization of biosensor signals. Our theoretical analysis indicated that the FRET ratio of high-FRET species relative to non-FRET species slightly decreases at high excitation intensity, suggesting the need for calibration using both high and low FRET standards. To test these predictions, we created FRET donor-acceptor pairs locked in "FRET-ON" and "FRET-OFF" conformations and introduced them into a subset of barcoded cells. Our results confirmed the theoretical predictions and showed that the calibrated FRET ratio is independent of imaging settings. We also provided a strategy for calculating the FRET efficiency. Together, our study presents a simple strategy for calibrated and highly multiplexed imaging of FRET biosensors, facilitating reliable comparisons across experiments and supporting long-term imaging applications.

13.
J Med Internet Res ; 26: e56022, 2024 Sep 04.
Artículo en Inglés | MEDLINE | ID: mdl-39231422

RESUMEN

BACKGROUND: Breast cancer is a leading global health concern, necessitating advancements in recurrence prediction and management. The development of an artificial intelligence (AI)-based clinical decision support system (AI-CDSS) using ChatGPT addresses this need with the aim of enhancing both prediction accuracy and user accessibility. OBJECTIVE: This study aims to develop and validate an advanced machine learning model for a web-based AI-CDSS application, leveraging the question-and-answer guidance capabilities of ChatGPT to enhance data preprocessing and model development, thereby improving the prediction of breast cancer recurrence. METHODS: This study focused on developing an advanced machine learning model by leveraging data from the Tri-Service General Hospital breast cancer registry of 3577 patients (2004-2016). As a tertiary medical center, it accepts referrals from four branches-3 branches in the northern region and 1 branch on an offshore island in our country-that manage chronic diseases but refer complex surgical cases, including breast cancer, to the main center, enriching our study population's diversity. Model training used patient data from 2004 to 2012, with subsequent validation using data from 2013 to 2016, ensuring comprehensive assessment and robustness of our predictive models. ChatGPT is integral to preprocessing and model development, aiding in hormone receptor categorization, age binning, and one-hot encoding. Techniques such as the synthetic minority oversampling technique address the imbalance of data sets. Various algorithms, including light gradient-boosting machine, gradient boosting, and extreme gradient boosting, were used, and their performance was evaluated using metrics such as the area under the curve, accuracy, sensitivity, and F1-score. RESULTS: The light gradient-boosting machine model demonstrated superior performance, with an area under the curve of 0.80, followed closely by the gradient boosting and extreme gradient boosting models. The web interface of the AI-CDSS tool was effectively tested in clinical decision-making scenarios, proving its use in personalized treatment planning and patient involvement. CONCLUSIONS: The AI-CDSS tool, enhanced by ChatGPT, marks a significant advancement in breast cancer recurrence prediction, offering a more individualized and accessible approach for clinicians and patients. Although promising, further validation in diverse clinical settings is recommended to confirm its efficacy and expand its use.


Asunto(s)
Inteligencia Artificial , Neoplasias de la Mama , Sistemas de Apoyo a Decisiones Clínicas , Internet , Aprendizaje Automático , Humanos , Femenino , Persona de Mediana Edad , Adulto , Anciano
14.
Artículo en Inglés | PAHO-IRIS | ID: phr-61353

RESUMEN

This editorial presents a collective vision of unity, innovation and collaboration, and a shared desire for resilient and more equitable health systems worldwide, urging the global health community to harness the collective strength of alliances and international collaboration to guide the health sector into a new era of digital transformation and innovation.


Asunto(s)
Tecnología Digital , Salud Digital , Telemedicina , Inteligencia Artificial , Atención Primaria de Salud , Sistemas de Salud , Cooperación Internacional
15.
Dental Press J Orthod ; 29(4): e2424102, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-39230111

RESUMEN

OBJECTIVE: To report and rank orthodontic finishing errors recorded in the clinical phase of the Brazilian Board of Orthodontics and Dentofacial Orthopedics (BBO) examination and correlate pretreatment case complexity with orthodontic treatment outcomes. MATERIALS AND METHODS: This single-center cross-sectional survey collected retrospective data from the clinical phase of BBO examinations between 2016 and 2023. The quality of orthodontic clinical outcomes of each case was assessed by means of the Cast-Radiograph Evaluation (CRE), while case complexity was evaluated using the Discrepancy Index (DI), both tools provided by the American Board of Orthodontics. Survey items were analyzed using descriptive statistics, and a correlation analysis between total CRE and DI scores (p<0.05) was also performed. RESULTS: A total of 447 orthodontic records was included. Orthodontic finishing errors were often observed, and no case was completely perfect. In the total CRE score, an average of 15 points was discounted for each case. Most frequently found issues involved problems with alignment, buccolingual inclination, marginal ridge, and occlusal relationship. The median DI score for initial case complexity was 22.0 (range 10.0 - 67.0). There was no significant correlation between the DI and CRE scores (p=0.106). CONCLUSION: Orthodontic finishing errors are inevitable, even in well-finished board-approved cases. Rotation, excessive buccolingual inclination, and discrepancies in marginal ridges are the most frequently observed areas of concern, in that order. Moreover, while case complexity, determined by DI, can impact orthodontic planning and pose challenges for clinicians, the study did not consider it a determining factor in predicting treatment outcomes.


Asunto(s)
Ortodoncia , Humanos , Estudios Transversales , Estudios Retrospectivos , Brasil , Ortodoncia Correctiva , Consejos de Especialidades , Maloclusión/clasificación , Maloclusión/terapia , Maloclusión/diagnóstico por imagen , Femenino , Masculino
16.
BMC Cardiovasc Disord ; 24(1): 409, 2024 Aug 05.
Artículo en Inglés | MEDLINE | ID: mdl-39103770

RESUMEN

BACKGROUND: This study evaluated the effects of concurrent isolated training (T) or training combined with the antioxidant N-acetylcysteine (NAC) on cardiac remodeling and oxidative stress in spontaneously hypertensive rats (SHR). METHODS: Six-month-old male SHR were divided into sedentary (S, n = 12), concurrent training (T, n = 13), sedentary supplemented with NAC (SNAC, n = 13), and concurrent training with NAC supplementation (TNAC, n = 14) groups. T and TNAC rats were trained three times a week on a treadmill and ladder; NAC supplemented groups received 120 mg/kg/day NAC in rat chow for eight weeks. Myocardial antioxidant enzyme activity and lipid hydroperoxide concentration were assessed by spectrophotometry. Gene expression of NADPH oxidase subunits Nox2, Nox4, p22 phox, and p47 phox was evaluated by real time RT-PCR. Statistical analysis was performed using ANOVA and Bonferroni or Kruskal-Wallis and Dunn. RESULTS: Echocardiogram showed concentric remodeling in TNAC, characterized by increased relative wall thickness (S 0.40 ± 0.04; T 0.39 ± 0.03; SNAC 0.40 ± 0.04; TNAC 0.43 ± 0.04 *; * p < 0.05 vs T and SNAC) and diastolic posterior wall thickness (S 1.50 ± 0.12; T 1.52 ± 0.10; SNAC 1.56 ± 0.12; TNAC 1.62 ± 0.14 * mm; * p < 0.05 vs T), with improved contractile function (posterior wall shortening velocity: S 39.4 ± 5.01; T 36.4 ± 2.96; SNAC 39.7 ± 3.44; TNAC 41.6 ± 3.57 * mm/s; * p < 0.05 vs T). Myocardial lipid hydroperoxide concentration was lower in NAC treated groups (S 210 ± 48; T 182 ± 43; SNAC 159 ± 33 *; TNAC 110 ± 23 *# nmol/g tissue; * p < 0.05 vs S, # p < 0.05 vs T and SNAC). Nox 2 and p22 phox expression was higher and p47 phox lower in T than S [S 1.37 (0.66-1.66); T 0.78 (0.61-1.04) *; SNAC 1.07 (1.01-1.38); TNAC 1.06 (1.01-1.15) arbitrary units; * p < 0.05 vs S]. NADPH oxidase subunits did not differ between TNAC, SNAC, and S groups. CONCLUSION: N-acetylcysteine supplementation alone reduces oxidative stress in untreated spontaneously hypertensive rats. The combination of N-acetylcysteine and concurrent exercise further decreases oxidative stress. However, the lower oxidative stress does not translate into improved cardiac remodeling and function in untreated spontaneously hypertensive rats.


Asunto(s)
Acetilcisteína , Hipertensión , NADPH Oxidasas , Estrés Oxidativo , Ratas Endogámicas SHR , Remodelación Ventricular , Animales , Masculino , Estrés Oxidativo/efectos de los fármacos , Acetilcisteína/farmacología , Remodelación Ventricular/efectos de los fármacos , Hipertensión/fisiopatología , Hipertensión/tratamiento farmacológico , Hipertensión/metabolismo , NADPH Oxidasas/metabolismo , NADPH Oxidasas/genética , Ratas , Antioxidantes/farmacología , Condicionamiento Físico Animal , Modelos Animales de Enfermedad , NADPH Oxidasa 2/metabolismo , NADPH Oxidasa 2/genética , NADPH Oxidasa 4/metabolismo , NADPH Oxidasa 4/genética , Glicoproteínas de Membrana/metabolismo , Glicoproteínas de Membrana/genética , Miocardio/metabolismo , Miocardio/patología , Peróxidos Lipídicos/metabolismo , Función Ventricular Izquierda/efectos de los fármacos , Suplementos Dietéticos , Hipertrofia Ventricular Izquierda/fisiopatología , Hipertrofia Ventricular Izquierda/prevención & control , Hipertrofia Ventricular Izquierda/metabolismo
17.
J Vasc Bras ; 23: e20230094, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-39099701

RESUMEN

Extracranial cerebrovascular disease has been the subject of intense research throughout the world, and is of paramount importance for vascular surgeons. This guideline, written by the Brazilian Society of Angiology and Vascular Surgery (SBACV), supersedes the 2015 guideline. Non-atherosclerotic carotid artery diseases were not included in this document. The purpose of this guideline is to bring together the most robust evidence in this area in order to help specialists in the treatment decision-making process. The AGREE II methodology and the European Society of Cardiology system were used for recommendations and levels of evidence. The recommendations were graded from I to III, and levels of evidence were classified as A, B, or C. This guideline is divided into 11 chapters dealing with the various aspects of extracranial cerebrovascular disease: diagnosis, treatments and complications, based on up-to-date knowledge and the recommendations proposed by SBACV.

18.
BMC Med Educ ; 24(1): 831, 2024 Aug 01.
Artículo en Inglés | MEDLINE | ID: mdl-39090712

RESUMEN

INTRODUCTION: Professionalism is fundamental to the existence of professions. In pharmacy, interest in this theme improved with events that examined the resocialization of pharmacists in care. With this, evaluating professionalism can help the operationalization of the theme and, consequently, the development of strategies for pharmacy consolidation before its challenges. Therefore, this study aimed to evaluate the professionalism of Brazilian pharmacists. METHODS: To meet the objective, a cross-sectional study was conducted between March 2022 and August 2023. Data were collected using the Brazilian version of the "Modification of Hall's Professionalism Scale for Use with Pharmacists". The scale has 39 items grouped into the domains: autonomy, vocation, professional council, self-regulation, continuing education, and altruism. Data were analyzed using descriptive statistics and an ANOVA analysis of variance with post-hoc Hochberg or Games-Howell tests with Bootstrapping was conducted to verify differences between groups. RESULTS: 600 pharmacists participated in this study. The majority (69%) was female and carried out their professional activities in community pharmacies (50%). Professionalism scores ranged between 14 and 29 points, with an average of 22.8 points. Pharmacists working in outpatient clinics had higher scores in most factors, namely, altruism, continuing education, professional council, vocation, and autonomy. This indicates that the inclination of pharmacists to occupy areas focused on care can be significant to assess professionalism. CONCLUSIONS: The data obtained indicate that pharmacists working in outpatient clinics had higher professionalism scores compared to others. This corroborates the worldwide trend experienced by pharmacy in recent decades, which is the execution of increasingly patient-centered practice models.


Asunto(s)
Farmacéuticos , Profesionalismo , Humanos , Profesionalismo/normas , Estudios Transversales , Femenino , Masculino , Brasil , Adulto , Rol Profesional , Persona de Mediana Edad , Encuestas y Cuestionarios
19.
J Mol Histol ; 2024 Aug 06.
Artículo en Inglés | MEDLINE | ID: mdl-39105943

RESUMEN

Insufficient evidence regarding how maternal undernutrition affects craniofacial bone development persists. With its unique focus on the impact of gestational protein restriction on calvaria and mandible osteogenesis, this study aims to fill, at least in part, this gap. Female mice were mated and randomized into NP (normal protein) or LP (low protein) groups. On the 18th gestational day (GD), male embryos were collected and submitted to microtomography (µCT), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), PCR, and autophagy dynamic analyses. The study shows that the LP offspring exhibited lower body mass than the NP group, with µCT analysis revealing no volumetric differences in fetus's head. EDS analysis showed lower calcium and higher phosphorus percentages in mandibles and calvaria. SEM assessment evidenced higher hydroxyapatite crystal-like (HC) deposition on the calvaria surface in LP fetus. Conversely, lower HC deposition was observed on the mandible surface, suggesting delayed matrix mineralization in LP fetuses with a higher percentage of collagen fibers in the mandible bone. The autophagy process was reduced in the mesenchyme of LP fetuses. PCR array analysis of 84 genes revealed 27 genes with differential expression in the LP progeny-moreover, increased mRNA levels of Akt1, Mtor, Nfkb, and Smad1 in the LP offspring. In conclusion, the results suggest that gestational protein restriction anticipated bone differentiation in utero, before 18GD, where this process is reduced compared to the control, leading to the reduction in bone area at 15 postnatal day previously observed. These findings provide insights into the molecular and cellular mechanisms of mandible development and suggest potential implications for the Developmental Origins of Health and Disease (DOHaD).

20.
Rev Soc Bras Med Trop ; 57: e007092024, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-39140583

RESUMEN

BACKGROUND: Domiciliation by Triatoma sordida is a public health concern in South America. This study aimed to evaluate the morphometric changes in the domestic and peridomestic populations of T. sordida. METHODS: Specimen hemelytra were mounted, digitized, and processed for geometric morphometric analyses. RESULTS: The specimens captured in houses were smaller than those captured in peridomiciles. A large size reduction effect was observed in female peridomicile populations compared with female house populations. CONCLUSIONS: T. sordida house populations were smaller than peridomestic populations. Wing geometric morphometry can be used as a tool to indicate T. sordida domiciliation.


Asunto(s)
Insectos Vectores , Triatoma , Alas de Animales , Triatoma/anatomía & histología , Triatoma/clasificación , Animales , Femenino , Masculino , Alas de Animales/anatomía & histología , Insectos Vectores/anatomía & histología , Insectos Vectores/clasificación , Enfermedad de Chagas/transmisión , Humanos
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