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1.
Cortex ; 178: 287-298, 2024 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-39084164

RESUMO

Pauses in speech are indicators of cognitive effort during language production and have been examined to inform theories of lexical, grammatical and discourse processing in healthy speakers and individuals with aphasia (IWA). Studies of pauses have commonly focused on their location and duration in relation to grammatical properties such as word class or phrase complexity. However, recent studies of speech output in aphasia have revealed that utterances of IWA are characterised by stronger collocations, i.e., combinations of words that are often used together. We investigated the effects of collocation strength and lexical frequency on pause duration in comic strip narrations of IWA and non-brain-damaged (NBD) individuals with part of speech (PoS; content and function words) as covariate. Both groups showed a decrease in pause duration within more strongly collocated bigrams and before more frequent content words, with stronger effects in IWA. These results are consistent with frameworks which propose that strong collocations are more likely to be processed as holistic, perhaps even word-like, units. Usage-based approaches prove valuable in explaining patterns of preservation and impairment in aphasic language production.


Assuntos
Afasia , Fala , Humanos , Afasia/fisiopatologia , Fala/fisiologia , Masculino , Feminino , Pessoa de Meia-Idade , Idoso , Adulto , Idioma
2.
Eur J Dent Educ ; 28(4): 964-968, 2024 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-39074310

RESUMO

Students' new knowledge is gradually built up in the context of the task for which it is required and consolidated by applying it to clinical cases. As students see more and more clinical cases the knowledge emerges from an associative mesh of different levels of understanding. During tutorial clinical teaching, residents should be gradually exposed to an increasing range of real-world learning tasks and increasing levels of complexity. This exposure allows them to gradually develop shortcuts in the retrieval of their knowledge. This commentary provides a rationale for the construction of knowledge and the pivotal role that clinical tutorial teaching plays in this task.


Assuntos
Educação em Odontologia , Ensino , Humanos , Educação em Odontologia/métodos , Conhecimento , Competência Clínica , Aprendizagem
3.
J Cardiothorac Surg ; 19(1): 323, 2024 Jun 07.
Artigo em Inglês | MEDLINE | ID: mdl-38849906

RESUMO

BACKGROUND: Marfan Syndrome is an autosomal dominant disease caused by pathogenetic variants in the FBN1 gene. The progressive dilatation of the aorta and the potential risk of acute aortic syndromes influence the prognosis of these patients. We aim to describe population characteristics, long-term survival, and re-intervention patterns in patients who underwent aortic surgery with a previously confirmed clinical diagnosis of Marfan Syndrome in a middle-income country. METHODS: A retrospective single-center case series study was conducted. All Marfan Syndrome patients who underwent aortic procedures from 2004 until 2021 were included. Qualitative variables were frequency-presented, while quantitative ones adopted mean ± standard deviation. A subgroup analysis between elective and emergent procedures was conducted. Kaplan-Meier plots depicted cumulative survival and re-intervention-free. Control appointments and government data tracked out-of-hospital mortality. RESULTS: Fifty patients were identified. The mean age was 38.79 ± 14.41 years, with a male-to-female ratio of 2:1. Common comorbidities included aortic valve regurgitation (66%) and hypertension (50%). Aortic aneurysms were observed in 64% without dissection and 36% with dissection. Surgical procedures comprised elective (52%) and emergent cases (48%). The most common surgery performed was the David procedure (64%), and the Bentall procedure (14%). The in-hospital mortality rate was 4%. Complications included stroke (10%), and acute kidney injury (6%). The average follow-up was 8.88 ± 5.78 years. Survival rates at 5, 10, and 15 years were 89%, 73%, and 68%, respectively. Reintervention rates at 1, 2.5, and 5 years were 10%, 14%, and 17%, respectively. The emergent subgroup was younger (37.58 ± 14.49 years), had the largest number of Stanford A aortic dissections, presented hemodynamic instability (41.67%), and had a higher requirement of reinterventions in the first 5 years of follow-up (p = 0.030). CONCLUSION: In our study, surveillance programs played a pivotal role in sustaining high survival rates and identifying re-intervention requirements. However, challenges persist, as 48% of the patients required emergent surgery. Despite not affecting survival rates, a greater requirement for reinterventions was observed, emphasizing the necessity of timely diagnosis. Enhanced educational initiatives for healthcare providers and increased patient involvement in follow-up programs are imperative to address these concerns.


Assuntos
Síndrome de Marfan , Humanos , Síndrome de Marfan/complicações , Síndrome de Marfan/cirurgia , Masculino , Feminino , Estudos Retrospectivos , Adulto , Pessoa de Meia-Idade , Dissecção Aórtica/cirurgia , Adulto Jovem , Aneurisma Aórtico/cirurgia
4.
Toxicol In Vitro ; 98: 105849, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38772494

RESUMO

Concerns over Bisphenol A (BPA) and its substitute, Bisphenol S (BPS), have led to innovative exploration due to potential adverse health effects. BPS, replacing BPA in some regions to avoid toxic impacts, remains insufficiently studied. Besides this, the organ-on-a-chip technology emerges as a transformative solution in drug discovery and chemiclas toxicity testing, minimizing costs and aligning with ethical standards by reducing reliance on animal models, by integrating diverse tissues and dynamic cell environments enhances precision in predicting organ function. Here, we employ a 3-organ-on-a-chip microfluidic device with skin, intestine, and liver cultures to assess the effects of BPA and BPS via topical and oral administration. Our evaluation focused on gene markers associated with carcinogenicity, systemic toxicity, and endocrine disruption. BPA exhibited expected absorption profiles, causing liver injury and genetic modulation in related pathways. BPS, a safer alternative, induced adverse effects on gene expression, particularly in topical absorption, with distinct absorption patterns. Our findings underscore the urgency of addressing BPA and BPS toxicity concerns, highlighting the crucial role of organ-on-a-chip technology in understanding associated health risks. The study promotes the organ-on-a-chip methodology as a valuable tool for safe drug development and disease treatments, offering a novel liver toxicity screening alternative to traditional animal tests. This contributes to advancing comprehension of the biological effects of these compounds, fostering improved safety assessments in human health.


Assuntos
Compostos Benzidrílicos , Dispositivos Lab-On-A-Chip , Fígado , Fenóis , Pele , Sulfonas , Fenóis/toxicidade , Compostos Benzidrílicos/toxicidade , Fígado/efeitos dos fármacos , Fígado/metabolismo , Sulfonas/toxicidade , Animais , Pele/efeitos dos fármacos , Pele/metabolismo , Humanos , Intestinos/efeitos dos fármacos , Disruptores Endócrinos/toxicidade , Testes de Toxicidade/métodos , Sistemas Microfisiológicos
5.
Podium (Pinar Río) ; 19(1)abr. 2024.
Artigo em Espanhol | LILACS-Express | LILACS | ID: biblio-1550632

RESUMO

La complejidad ética en la práctica deportiva tiene diversas perspectivas que generan dilemas al aplicar principios universales, en un entorno competitivo en constante evolución y con avances tecnológicos, sociales y culturales necesarios, para establecer un marco ético coherente y aplicable en el ámbito del deporte. El objetivo de esta investigación consistió en analizar las perspectivas y enfoques éticos-deportivos presentes en la bioética aplicada a la práctica deportiva, con el fin de comprender los dilemas éticos emergentes y las tendencias actuales en este campo. La investigación fue de tipo teórica, a través de una revisión documental, en la que se siguieron los pasos de búsqueda y selección de artículos científicos; se extrajo información validada de bases de datos académicos, se organizaron sistemáticamente los hallazgos y finalmente se realizó una síntesis narrativa. La diversidad de enfoques ético-deportivos subraya la necesidad constante de equilibrar la competitividad con los valores fundamentales, de cómo el deporte enfrenta dilemas que requieren un equilibrio entre la búsqueda de la excelencia deportiva y el respeto por la integridad, equidad y diversidad; lo que desafía, a todos los actores, a promover un entorno deportivo más inclusivo. Se concluyó que el deporte evalúa múltiples dimensiones, incluidos la ética deontológica, la equidad para atletas y la virtud; se destacó la importancia de normativas para proteger la integridad, promover un ambiente ético y abordar los desafíos, en la competencia y tecnología deportivas emergentes.


A complexidade ética na prática do esporte tem diversas perspectivas que geram dilemas ao aplicar princípios universais, em um ambiente competitivo em constante evolução e com os avanços tecnológicos, sociais e culturais necessários para estabelecer uma estrutura ética coerente e aplicável no campo do esporte. O objetivo desta pesquisa foi analisar as perspectivas e abordagens ético-esportivas presentes na bioética aplicada ao esporte, a fim de compreender os dilemas éticos emergentes e as tendências atuais nesse campo. A pesquisa foi de natureza teórica, por meio de uma revisão documental, na qual foram seguidas as etapas de busca e seleção de artigos científicos; informações validadas foram extraídas de bancos de dados acadêmicos, as descobertas foram sistematicamente organizadas e, por fim, foi realizada uma síntese narrativa. A diversidade de abordagens éticas no esporte destaca a necessidade constante de equilibrar a competitividade com os valores fundamentais, como o esporte enfrenta dilemas que exigem um equilíbrio entre a busca da excelência esportiva e o respeito à integridade, equidade e diversidade, e desafia todos os atores a promover um ambiente esportivo mais inclusivo. Concluiu-se que o esporte avalia várias dimensões, inclusive a ética deontológica, a equidade para os atletas e a virtude; destacou-se a importância das regulamentações para proteger a integridade, promover um ambiente ético e enfrentar os desafios das competições e tecnologias esportivas emergentes.


The ethical complexity in sports practice has diverse perspectives that generate dilemmas when applying universal principles, in a competitive environment in constant evolution and with technological, social and cultural advances necessary, to establish a coherent and applicable ethical framework in the field of sports. The objective of this research was to analyze the ethical-sports perspectives and approaches present in bioethics applied to sports practice, in order to understand the emerging ethical dilemmas and current trends in this field. The research was theoretical, through a documentary review, in which the steps of searching and selecting scientific articles were followed; validated information was extracted from academic databases, the findings were systematically organized and finally a narrative synthesis was carried out. The diversity of ethical-sports approaches highlights the constant need to balance competitiveness with fundamental values, of how sport faces dilemmas that require a balance between the pursuit of sporting excellence and respect for integrity, equity and diversity; which challenges all actors to promote a more inclusive sports environment. It was concluded that sport evaluates multiple dimensions, including deontological ethics, equity for athletes and virtue; the importance of regulations to protect integrity, promote an ethical environment and address challenges in emerging sports competition and technology was highlighted.

6.
Clin Exp Nephrol ; 28(8): 711-727, 2024 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-38678166

RESUMO

Cisplatin (CP) is a chemotherapy drug widely prescribed to treat various neoplasms. Although fundamental for the therapeutic action of the drug, its cytotoxic mechanisms trigger adverse effects in several tissues, such as the kidney, liver, and heart, which limit its clinical use. In this sense, studies point to an essential role of damage to nuclear and mitochondrial DNA associated with oxidative stress, inflammation, and apoptosis in the pathophysiology of tissue injuries. Due to the limitation of effective preventive and therapeutic measures against CP-induced toxicity, new strategies with potential cytoprotective effects have been studied. Therefore, this article is timely in reviewing the characteristics and main molecular mechanisms common to renal, hepatic, and cardiac toxicity previously described, in addition to addressing the main validated strategies for the current management of these adverse events in clinical practice. We also handle the main promising antioxidant substances recently presented in the literature to encourage the development of new research that consolidates their potential preventive and therapeutic effects against CP-induced cytotoxicity.


Assuntos
Antineoplásicos , Cardiotoxicidade , Doença Hepática Induzida por Substâncias e Drogas , Cisplatino , Humanos , Cisplatino/efeitos adversos , Antineoplásicos/efeitos adversos , Doença Hepática Induzida por Substâncias e Drogas/etiologia , Doença Hepática Induzida por Substâncias e Drogas/prevenção & controle , Nefropatias/induzido quimicamente , Nefropatias/prevenção & controle , Animais , Estresse Oxidativo/efeitos dos fármacos , Antioxidantes/farmacologia , Antioxidantes/uso terapêutico , Rim/efeitos dos fármacos , Rim/metabolismo , Rim/patologia , Cardiopatias/induzido quimicamente , Cardiopatias/prevenção & controle
7.
J Hazard Mater ; 470: 134202, 2024 May 15.
Artigo em Inglês | MEDLINE | ID: mdl-38581873

RESUMO

The escalating global concern of antimicrobial resistance poses a significant challenge to public health. This study delved into the occurrence of resistant bacteria and antimicrobial resistance genes in the waters and sediments of urban rivers and correlated this emergence and the heightened use of antimicrobials during the COVID-19 pandemic. Isolating 45 antimicrobial-resistant bacteria across 11 different species, the study identifies prevalent resistance patterns, with ceftriaxone resistance observed in 18 isolates and ciprofloxacin resistance observed in 13 isolates. The detection of extended-spectrum ß-lactamases, carbapenemases, and acquired quinolone resistance genes in all samples underscores the gravity of the situation. Comparison with a pre-pandemic study conducted in the same rivers in 2019 reveals the emergence of previously undetected new resistant species, and the noteworthy presence of new resistant species and alterations in resistance profiles among existing species. Notably, antimicrobial concentrations in rivers increased during the pandemic, contributing significantly to the scenario of antimicrobial resistance observed in these rivers. We underscore the substantial impact of heightened antimicrobial usage during epidemics, such as COVID-19, on resistance in urban rivers. It provides valuable insights into the complex dynamics of antimicrobial resistance in environmental settings and calls for comprehensive approaches to combat this pressing global health issue, safeguarding both public and environmental health.


Assuntos
COVID-19 , Farmacorresistência Bacteriana , Rios , COVID-19/epidemiologia , Brasil/epidemiologia , Humanos , Rios/microbiologia , Antibacterianos/farmacologia , SARS-CoV-2/efeitos dos fármacos , Bactérias/efeitos dos fármacos , Bactérias/genética , Pandemias
8.
Orbit ; : 1-5, 2024 Mar 15.
Artigo em Inglês | MEDLINE | ID: mdl-38488786

RESUMO

PURPOSE: To describe a novel surgical technique aimed to approach those orbital lesions located superior and posterior to the equator of the globe. METHODS: We describe a novel surgical technique that was performed in four patients to approach intraorbital tumors superiorly and posteriorly located. This technique was completed through an upper eyelid skin crease followed by grinding the superior orbital rim to achieve complete removal of the lesions. RESULTS: Complete removal of the lesion was accomplished in every case. No intraoperative complications were observed in any of the patients. During the follow-up period, one patient presented with frontal hypersensitivity and one with diplopia. CONCLUSIONS: In the case series presented, the upper eyelid skin crease approach with grinding of the superior orbital rim proved to be a safe and effective surgical technique to remove lesions located superior and posterior within the orbit in our series. More studies are needed to further evaluate the efficacy and long-term results of this approach.

9.
Cells ; 13(5)2024 Feb 28.
Artigo em Inglês | MEDLINE | ID: mdl-38474387

RESUMO

The involvement of central and peripheral inflammation in the pathogenesis and prognosis of major depressive disorder (MDD) has been demonstrated. The increase of pro-inflammatory cytokines (interleukin (IL)-1ß, IL-6, IL-18, and TNF-α) in individuals with depression may elicit neuroinflammatory processes and peripheral inflammation, mechanisms that, in turn, can contribute to gut microbiota dysbiosis. Together, neuroinflammation and gut dysbiosis induce alterations in tryptophan metabolism, culminating in decreased serotonin synthesis, impairments in neuroplasticity-related mechanisms, and glutamate-mediated excitotoxicity. This review aims to highlight the inflammatory mechanisms (neuroinflammation, peripheral inflammation, and gut dysbiosis) involved in the pathophysiology of MDD and to explore novel anti-inflammatory therapeutic approaches for this psychiatric disturbance. Several lines of evidence have indicated that in addition to antidepressants, physical exercise, probiotics, and nutraceuticals (agmatine, ascorbic acid, and vitamin D) possess anti-inflammatory effects that may contribute to their antidepressant properties. Further studies are necessary to explore the therapeutic benefits of these alternative therapies for MDD.


Assuntos
Transtorno Depressivo Maior , Humanos , Transtorno Depressivo Maior/tratamento farmacológico , Doenças Neuroinflamatórias , Disbiose/tratamento farmacológico , Antidepressivos/farmacologia , Inflamação/metabolismo , Anti-Inflamatórios/uso terapêutico
10.
Med Res Rev ; 44(5): 2015-2034, 2024 09.
Artigo em Inglês | MEDLINE | ID: mdl-38528684

RESUMO

The hepatitis B elimination is a goal proposed by the WHO to be achieved by 2030 through the adoption of synergistic measures for the prevention and chronic HBV infection treatment. Complete cure is characterized by the HBV elimination from the body and is the goal of the chronic hepatitis B treatment, which once achieved, will enable the hepatitis B elimination. This, today, has been a scientific challenge. The difficulty in achieving a complete cure is due to the indefinite maintenance of a covalently closed episomal circular DNA (cccDNA) reservoir and the maintenance and persistence of an insufficient and dysfunctional immune response in chronically infected patients. Among the measures adopted to eliminate hepatitis B, two have the potential to directly interfere with the virus cycle, but with limited effect on HBV control. These are conventional vaccines-blocking transmission and antiviral therapy-inhibiting replication. Vaccines, despite their effectiveness in protecting against horizontal transmission and preventing mother-to-child vertical transmission, have no effect on chronic infection or potential to eliminate the virus. Treatment with antivirals suppresses viral replication, but has no curative effect, as it has no action against cccDNA. Therapeutic vaccines comprise an additional approach in the chronic infection treatment, however, they have only a modest effect on the immune system, enhancing it temporarily. This manuscript aims to address (1) the cccDNA persistence in the hepatocyte nucleus and the immune response dysfunction in chronically infected individuals as two primary factors that have hampered the treatment and HBV elimination from the human body; (2) the limitations of antiviral therapy and therapeutic vaccines, as strategies to control hepatitis B; and (3) the possibly promising therapeutic approaches for the complete cure and elimination of hepatitis B.


Assuntos
Vacinas contra Hepatite B , Vírus da Hepatite B , Hepatite B , Humanos , Vírus da Hepatite B/efeitos dos fármacos , Vacinas contra Hepatite B/uso terapêutico , Hepatite B/tratamento farmacológico , Hepatite B/prevenção & controle , Antivirais/uso terapêutico , Animais , DNA Circular , Hepatite B Crônica/tratamento farmacológico , Hepatite B Crônica/virologia
11.
World Neurosurg X ; 23: 100319, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-38511160

RESUMO

Background: Tuberculum sellae meningiomas (TSM) account for 3-10% of intracranial meningiomas. Visual loss is the presenting symptom in up to 80% of cases. Surgical management poses a great challenge due to tumor proximity to neurovascular structures such as the optic nerve and the internal carotid artery (ICA); hence, there is controversy regarding the optimal approach. The aim of this study is to determine differences in visual outcomes between transcranial (TCA) and endoscopic endonasal (EEA) approaches. Methods: A retrospective study including 29 patients with TSM surgically treated by TCA or EEA between 2011 and 2023 in a single referral center was conducted. Pre-and post-operative neuro-ophthalmologic evaluations, focusing on visual acuity and campimetry, were evaluated. Results: Sixteen (55.16%) patients were intervened through a TCA and the remaining 13 (44.84%) via an EEA. The lesions in each group were similar in terms of pre- operative volume (15.12 vs 12.9 cm3, p = 0.497) and neurovascular invasion (optic canal invasion 48.26 vs 41.37%, p = 0.664; ICA 44.81 vs 31.03%, p = 0.797). There were no significant differences in visual outcomes between both approaches; TCA presented an improvement of 5.18 points in visual fields (p = 0.140), whereas EEA had an improvement of 17.39 points in visual acuity (p = 0.114). Conclusion: EEA seems to offer greater improvement in visual acuity than TCA. However, the ideal approach should be individualized; taking into account the tumor's volume and invasiveness, as well as the patient's visual complaints.

12.
J Esthet Restor Dent ; 36(6): 941-950, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38475977

RESUMO

OBJECTIVES: To investigate the effect of cumulative doses of radiation on the pushout bond strength (BS) of a universal resin cement used in the self-etch (SE) and self-adhesive (SA) modes to the intraradicular dentin. MATERIALS AND METHODS: Forty-eight human teeth were distributed into three groups (n = 16) according to the radiation therapy dose (RT): NoRT (no-radiotherapy), 70RT (70 Gy), and 70 + 70RT (70 Gy + 70 Gy). The teeth were redistributed into two subgroups (n = 8), according to the adhesive mode: SE (NoRT-SE, 70RT-SE, and 70 + 70RT-SE) and SA (NoRT-SA, 70RT-SA, and 70 + 70RT-SA). Data were statistically compared after BS test (ANOVA, Tukey's post hoc test, and Fisher's exact test). RESULTS: In the SA mode, BS was significantly higher in nonirradiated teeth compared with 70RT and 70 + 70RT (p < 0.0001). There were no significant differences between SE and SA modes in nonirradiated teeth (p = 0.14). In the 70RT group, SE mode increased BS compared with SA mode (p < 0.0001). Most specimens had adhesive and mixed failures in SA and SE modes, respectively. CONCLUSIONS: The universal resin cement in the SE mode had greater BS to the irradiated dentin. When teeth were re-irradiated, the universal resin cement had similar performance in terms of BS, regardless of the adhesive approach. CLINICAL SIGNIFICANCE: There is no research establishing a correlation between radiotherapy and its impact on the BS of a universal resin cement used in SE and SA modes to intraradicular dentin.


Assuntos
Colagem Dentária , Cimentos de Resina , Humanos , Cimentos de Resina/química , Colagem Dentária/métodos , Dentina , Análise do Estresse Dentário , Teste de Materiais , Adesivos Dentinários/química , Condicionamento Ácido do Dente
13.
Adv Exp Med Biol ; 1443: 211-220, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38409423

RESUMO

Diabetes mellitus (DM) is a chronic metabolic disorder characterized by elevated blood sugar levels, resulting from either body's inability to produce or effectively utilize insulin. There are several types of DM, but the most common are type 1 diabetes (T1D), type 2 diabetes (T2D), and gestational diabetes mellitus (GDM). DM is a complex disease and a global health concern, and the current clinical markers, such as fasting glucose, are helpful in the diagnosis of DM, but are not specific and sensitive, especially when measured on the beginning of the pathogenesis. Therefore, there is a pressing need to discover new early biomarkers that can provide an early diagnosis. Omics is an important field for the discovery of potential new biomarkers, especially proteomics, metabolomics, and lipidomics, where techniques such as liquid chromatography, mass spectrometry, and nuclear magnetic resonance are utilized to identify novel DM biomarkers and their pathways. In this review, we report papers that applied omics in the context of DM to identify new markers and their relationship with this disease, with the aim of elucidating new diagnostic techniques for the main types of DM.


Assuntos
Diabetes Mellitus Tipo 2 , Lipidômica , Humanos , Diabetes Mellitus Tipo 2/diagnóstico , Diabetes Mellitus Tipo 2/genética , Proteômica/métodos , Metabolômica/métodos , Biomarcadores
14.
Diabetes Ther ; 15(4): 749-761, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38378924

RESUMO

It is a well-evidenced fact that diet significantly impacts type 2 diabetes mellitus (T2DM) prevention and management. However, dietary responses vary among different populations, necessitating personalized recommendations. Substantial evidence supports the role of diet in T2DM remission, particularly low-energy or low-carbohydrate diets that facilitate weight loss, enhance glycemic control, and achieve remission. This review aims to comprehensively analyze and compare personalized nutritional interventions with non-personalized approaches in T2DM remission. We conducted a literature search using the Academy of Nutrition and Dietetics guidelines, focusing on clinical and observational trials published within the past decade. We present the strengths and drawbacks of incorporating personalized nutrition into practice, along with the areas for research in implementing personalized interventions, such as cost-effectiveness and accessibility. The findings reveal consistently higher diabetes remission rates in personalized nutrition studies compared to non-personalized interventions.

15.
Forensic Sci Int ; 355: 111917, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38215538

RESUMO

More than three decades have passed since the publication of Lamendin et al.'s proposal in 1992. Over this time, numerous investigations have been conducted to assess the applicability of the technique in different populations with acceptable results in terms of estimation errors. The proposal by Lamendin and colleagues remains relevant today, and has made a significant contribution to adult age-at-death estimation due to its simplicity, repeatability, replicability, and high performance. Indeed, significant progress towards systematizing and strengthening the procedure has been reported in the published literature. One noteworthy advancement is the development of an international database that supports the use of Bayesian statistics for age-at-death estimation. This resource plays a crucial role in standardizing the methodology and improving the reliability for obtaining more reliable results on a global scale. The aim of this study is to investigate the historical evolution of the technique, to assess the accuracy of the results obtained by different analytic procedures, and to explore its impact in forensic applications through a systematic analysis of the specialized literature on this field. The current state of research indicates that this type of methodological research is an ongoing process, far from being completed. Many questions and challenges that require further attention to address effectively these issues remain unanswered, such as the development of non-linear regressions and probabilistic approaches, the deepening of procedures that improve global approximations, and the intensification of research focused on achieving more accurate estimations among individuals over 70 years-old. However, studies generally agree that the Lamendin technique works well for individuals between the ages of 30-60 years. It is still in force today, although the method has been significantly perfected. Despite the degree of research development in this area, further efforts are needed to improve the understanding and performance of these kinds of procedures. This will ultimately lead to an improvement in the accuracy and reliability of forensic investigation results worldwide.


Assuntos
Determinação da Idade pelos Dentes , Raiz Dentária , Adulto , Humanos , Pessoa de Meia-Idade , Idoso , Reprodutibilidade dos Testes , Teorema de Bayes , Determinação da Idade pelos Dentes/métodos
16.
Toxicol In Vitro ; 95: 105747, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38043627

RESUMO

The incidence of viruses such as Zika, Dengue, and Chikungunya affects human health worldwide, and insect repellents are recommended for individual protection. Formulations incorporating nanotechnology should be carefully assessed for toxicity, particularly regarding the security levels established for human health and the environment. This study evaluates the cytotoxicity of a repellent formulation containing zein nanoparticles (NP) loading geraniol (Ger) and icaridin (Ica) in three cell lines: NIH/3T3, HaCaT, and SIRC. To address formulation hazards, IC50 values were determined by MTT and Calcein-AM assays. In both NIH/3T3 and HaCaT, the IC50 values for NP + Ger + Ica formulation were around 0.2%. For risk assessment, cell viability was also determined after a single exposure and repeated exposure to the formulation. No evidence of cytotoxicity was observed for NP + Ger + Ica formulation-treated cells. The risk assessment for eye damage revealed cytotoxicity in SIRC cells when exposed to a 5% concentration, which may be attributed to ocular geraniol toxicity, because zein nanoparticles alone did not exhibit any signs of toxicity. Cell internalization indicated low uptake in NIH/3T3 and HaCaT cells. Phenotypic profiling resulted in similar phenotypes for untreated cells and cells exposed to NP + Ger + Ica formulation. The toxicological profile outlined by the multiparametric and orthogonal approach suggests that the NP + Ger + Ica formulation poses no significant risk to the topical application under the tested conditions. Adopting an orthogonal approach brings robustness to our findings.


Assuntos
Repelentes de Insetos , Nanopartículas , Zeína , Infecção por Zika virus , Zika virus , Humanos , Repelentes de Insetos/toxicidade , Zeína/toxicidade , Monoterpenos Acíclicos/toxicidade , Nanopartículas/toxicidade
17.
Saúde Soc ; 33(1): e220310pt, 2024. tab
Artigo em Inglês, Português | LILACS | ID: biblio-1536862

RESUMO

Resumo Este ensaio objetiva discutir as investigações de surtos e epidemias, desde os primeiros relatos disponíveis na literatura científica do século XVIII até o momento atual, utilizando para sua construção artigos científicos e livros sobre a temática. O principal argumento desenvolvido é a passagem de abordagens qualitativas da epidemiologia, predominantes nos períodos iniciais, para a abordagem quantitativa, que inicialmente convive com a qualitativa, mas se torna dominante a partir da segunda metade do século XIX. Conclui-se com uma breve reflexão sobre o momento atual de enfrentamento da epidemia da covid-19.


Abstract This essay aims to discuss the investigation of outbreaks and epidemics, from the first reports available in scientific literature from the 18th century to the present time, using scientific articles and books on the subject for its construction. The main argument developed is the transition from qualitative approaches of epidemiology, which predominated in the early periods, to the quantitative approach, which initially coexists with the qualitative one but became dominant from the second half of the 19th century. It concludes with a brief reflection on the current moment of confronting the COVID-19 epidemic.


Assuntos
Surtos de Doenças , Epidemias , Investigação Epidemiológica
18.
Life (Basel) ; 13(11)2023 Nov 10.
Artigo em Inglês | MEDLINE | ID: mdl-38004331

RESUMO

BACKGROUND: This study aimed to investigate the influence of the dietary approaches to stop hypertension (DASH) diet on gestational weight gain and perinatal outcomes in pregnant women with pre-existing diabetes mellitus (PDM). METHODS: A randomized, single-blind, controlled clinical trial was conducted with 68 pregnant women with PDM throughout prenatal care until delivery (18 weeks) at a public maternity hospital in Rio de Janeiro, Brazil (2016-2020). The standard diet adopted by the control group (standard diet group-SDG) contained 45-55% carbohydrates, 15-20% protein, and 25-30% lipids of the total energy intake. An adapted DASH diet, with a similar macronutrient composition, but with higher calcium, potassium, magnesium, fiber, and reduced saturated fat, was prescribed for the intervention group (DASH diet group-DDG). Student's t- or Mann-Whitney U tests were used to compare outcomes between groups. To assess the trajectory of gestational weight gain throughout the intervention between the study groups, linear mixed-effects regression models were used. RESULTS: The DDG had lower gestational weight gain at the fifth (p = 0.03) and seventh appointment (p = 0.04), with no difference in average total gestational weight gain (SDG: 10 kg [SD = 4]; DDG: 9 kg [SD = 5], p = 0.23). There was a trend for a lower length of stay of the newborns (p = 0.08) in the DDG without differences for other perinatal outcomes. CONCLUSIONS: The DASH diet promoted less variation in gestational weight gain without promoting a difference in total gestational weight gain, and there was no difference between the study groups for perinatal outcomes.

19.
J Funct Biomater ; 14(10)2023 Sep 24.
Artigo em Inglês | MEDLINE | ID: mdl-37888156

RESUMO

Articular cartilage injuries are found in up to 60% of patients who undergo an arthroscopic knee procedure, and those that totally affect articular cartilage (grade IV) have limited regenerative capacity and extended time for recovery. 3-D scaffolds represent a novel solution to address this type of injury. Our purpose was to analyze the MRI findings and functional status of patients that underwent repair of chondral defects either by microfractures or Hyaluronan (HA) 3-D scaffolding. We conducted a retrospective study of patients with chondral defects. The outcomes analyzed in this study included anatomical changes evaluated by the Henderson score (based on MRI findings) at baseline, 6, and 12 months after surgery, and improvement in functionality evaluated by the Modified Cincinnati Knee Rating System (MCKRS) at baseline and 6 months after surgery. Clinical and demographic characteristics were similar for both groups. There was a statistically significant improvement in Henderson score for the 3-D scaffold-treated group at 6 months versus the microfracture group (p < 0.0001). Improvement in functionality, measured by the MCKRS, was more frequently found in the 3-D scaffold-treated group. In conclusion, the use of HA 3-D scaffolding was superior, with faster recovery evident 6 months after the surgery that progressed to full recovery in all patients a year after surgery. Future studies with a randomized design might help to support our findings. This study provides level III evidence.

20.
BMC Public Health ; 23(1): 1946, 2023 10 07.
Artigo em Inglês | MEDLINE | ID: mdl-37805484

RESUMO

This study aimed to map the scientific evidence on health promotion in human immunodeficiency virus) HIV testing among men who have sex with men (MSM) and transgender women (TGW) based on the social-ecological model (i.e., individual, organizational and social levels) and the theoretical framework of vulnerability (i.e., individual, social, and programmatic levels). The reviewed studies indicated several barriers to accessing HIV testing (e.g., economic, structural, and bureaucratic) and demonstrated the potential for community approaches to promote greater access to HIV testing and minimize the stigma and discrimination associated with HIV testing, primarily through community leadership and social support networks. The socio-ecological model of health promotion and the vulnerability approach have the potential to contribute to improving HIV testing services by balancing the technical and political power of health services and providers with community participation while considering the social contexts. Therefore, there is a need for reflection on health promotion policies and programs aimed at expanding access to HIV testing among MSM and TGW through interventions that consider the social contexts and cultural perspectives. Moreover, inter-sectoral strategies aimed at improving living conditions and access to fundamental resources for maintaining health and well-being should be considered.


Assuntos
Infecções por HIV , Minorias Sexuais e de Gênero , Pessoas Transgênero , Masculino , Humanos , Feminino , Homossexualidade Masculina , Infecções por HIV/diagnóstico , Infecções por HIV/prevenção & controle , Estigma Social , Teste de HIV
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