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1.
Eur J Neurol ; 31(2): e16139, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38015440

RESUMO

BACKGROUND: Life's Simple 7, a lifestyle and cardiovascular index associated with cognition, has been updated to Life's Essential 8 (LE8) to include sleep. LE8 has been related to cardiovascular outcomes but its association with cognition is unclear. METHODS: In this longitudinal analysis of the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil), LE8 score was based on health behaviors (diet, physical activity, nicotine exposure, and sleep health) as well as health-related factors (body mass index, blood lipids, blood glucose, and blood pressure). Cognition was assessed in three waves, 4 years apart, using the Consortium to Establish a Registry for Alzheimer's Disease - Word List, semantic and phonemic verbal fluency, the Trail-Making Test B (TMT-B), and a global composite score. We used linear mixed-model analysis, inverse probability weighting, and interaction analysis. RESULTS: At baseline, the mean age of the study cohort was 51.4 ± 8.9 years, 56% were women, and 53% were White. Higher baseline LE8 scores were associated with slower decline in global cognition (ß = 0.001, 95% confidence interval [CI] 0.001, 0.002; p < 0.001), memory (ß = 0.001, 95% CI 0.000, 0.002; p = 0.013), verbal fluency (ß = 0.001, 95% CI 0.000, 0.002; p = 0.003), and TMT-B (ß = 0.004, 95% CI 0.003, 0.005; p < 0.001). This association was mainly driven by LE8 health factors, particularly blood glucose and blood pressure. Age, sex, and race were modifiers of the association between LE8 and global cognitive decline (p < 0.001), suggesting it was more pronounced in older, male, and Black participants. CONCLUSIONS: Higher baseline LE8 scores were associated with slower global and domain-specific cognitive decline during 8 years of follow-up, mainly due to health factors such as blood glucose and blood pressure. Sociodemographic factors were modifiers of this association.


Assuntos
Doenças Cardiovasculares , Disfunção Cognitiva , Adulto , Humanos , Masculino , Feminino , Idoso , Pessoa de Meia-Idade , Estudos Longitudinais , Fatores de Risco , Glicemia , Disfunção Cognitiva/epidemiologia , Cognição/fisiologia , Doenças Cardiovasculares/epidemiologia
2.
An Acad Bras Cienc ; 96(3): e20230629, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38922254

RESUMO

The current study proposes to investigate the diversity and phylogeny of trypanosomes parasitizing wild birds from the Brazilian Atlantic Forest. Cytological examination was carried out by light microscopy of blood smears and positive birds were selected for amplification of the 18S rDNA sequence through PCR. The resulting amplicons were subjected to purification, cloning, and sequencing analysis. Phylogenetic reconstruction was conducted, including all avian trypanosomes representative's lineages. A total of ten bird samples from species of Turdus flavipes (N=1/12), T. albicollis (N=1/8), Tachyphonus coronatus (N=6/121), Thamnophilus caerulescens (N=1/22) and Synallaxis spixi (N=1/8) were positive for Trypanosoma spp. In the six specimens of T. coronatus, five distinct lineages of Trypanosoma spp. 18S-rRNA were observed in ninety sequences obtained, and using the strategy of cloning independent PCR, it was possible to observe that two of them were related to T. avium (JB01/JB02), and three were closed related to T. bennetti (JB03/ JB04/JB05). Addionaly, all fifteen sequences obtained from T. caerulescens/ S. spixi/T. flavipes/T. albicollis were identical. The present research is the first study to access molecular diversity and polyparasitism by avian trypanosomes in Brazil. The current research exhibits the wide genetic variability in avian trypanosomes and its non-specific relationship with its avian hosts.


Assuntos
Aves , Filogenia , Reação em Cadeia da Polimerase , Trypanosoma , Animais , Brasil , Trypanosoma/classificação , Trypanosoma/genética , Trypanosoma/isolamento & purificação , Aves/parasitologia , Floresta Úmida , RNA Ribossômico 18S/genética , DNA de Protozoário/genética , Tripanossomíase/veterinária , Tripanossomíase/parasitologia , Doenças das Aves/parasitologia , Variação Genética , DNA Ribossômico/genética , Análise de Sequência de DNA
3.
Spinal Cord ; 61(2): 119-124, 2023 02.
Artigo em Inglês | MEDLINE | ID: mdl-36064765

RESUMO

STUDY DESIGN: Cross-sectional study. OBJECTIVE: To document the labour market participation rate and investigate the impact of social and economic characteristics on this outcome among individuals with spinal cord injury or disease (SCI/D) who participated in a multidisciplinary rehabilitation programme in Brazil. SETTING: A specialised rehabilitation centre in southern Brazil. METHODS: An interview was performed with former rehabilitation clients with SCI/D. A total of 111 community-dwelling individuals with SCI/D who had been previously rehabilitated in a large regional rehabilitation centre were considered. Employment status and demographic, injury, work, and economic characteristics were self-reported via interview. Descriptive statistical analyses were performed. RESULTS: The labour market participation rate was 21.6% (24 individuals). Five respondents were employed in formal work activities, and the other 19 were involved in informal activities (self-employed). Since the onset of injury, a shorter time was associated with nonparticipation in occupational work. Individuals with a higher level of education were more likely to be working. Household income was higher among the participants who had returned to work than among those who had not returned. CONCLUSION: There is a relatively low labour market participation rate among rehabilitated individuals with SCI/D in southern Brazil. The rehabilitation services should emphasise vocational training, access to education, and employment support for individuals with SCI/D from early onset after the injury. Public policies must be revised to support labour market participation among individuals with SCI/D in Brazil.


Assuntos
Traumatismos da Medula Espinal , Humanos , Traumatismos da Medula Espinal/epidemiologia , Traumatismos da Medula Espinal/reabilitação , Estudos Transversais , Brasil/epidemiologia , Emprego , Ocupações
4.
Alzheimers Dement ; 19(9): 3771-3782, 2023 09.
Artigo em Inglês | MEDLINE | ID: mdl-36861807

RESUMO

INTRODUCTION: Cognitive impairment is common after severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. However, associations between post-hospital discharge risk factors and cognitive trajectories have not been explored. METHODS: A total of 1105 adults (mean age ± SD 64.9 ± 9.9 years, 44% women, 63% White) with severe coronavirus disease 2019 (COVID-19) were evaluated for cognitive function 1 year after hospital discharge. Scores from cognitive tests were harmonized, and clusters of cognitive impairment were defined using sequential analysis. RESULTS: Three groups of cognitive trajectories were observed during the follow-up: no cognitive impairment, initial short-term cognitive impairment, and long-term cognitive impairment. Predictors of cognitive decline after COVID-19 were older age (ß = -0.013, 95% CI = -0.023;-0.003), female sex (ß = -0.230, 95% CI = -0.413;-0.047), previous dementia diagnosis or substantial memory complaints (ß = -0.606, 95% CI = -0.877;-0.335), frailty before hospitalization (ß = -0.191, 95% CI = -0.264;-0.119), higher platelet count (ß = -0.101, 95% CI = -0.185;-0.018), and delirium (ß = -0.483, 95% CI = -0.724;-0.244). Post-discharge predictors included hospital readmissions and frailty. DISCUSSION: Cognitive impairment was common and the patterns of cognitive trajectories depended on sociodemographic, in-hospital, and post-hospitalization predictors. HIGHLIGHTS: Cognitive impairment after coronavirus disease 2019 (COVID-19) hospital discharge was associated with higher age, less education, delirium during hospitalization, a higher number of hospitalizations post discharge, and frailty before and after hospitalization. Frequent cognitive evaluations for 12-month post-COVID-19 hospitalization showed three possible cognitive trajectories: no cognitive impairment, initial short-term impairment, and long-term impairment. This study highlights the importance of frequent cognitive testing to determine patterns of COVID-19 cognitive impairment, given the high frequency of incident cognitive impairment 1 year after hospitalization.


Assuntos
COVID-19 , Delírio , Fragilidade , Adulto , Humanos , Feminino , Masculino , COVID-19/epidemiologia , COVID-19/complicações , Assistência ao Convalescente , Alta do Paciente , Fragilidade/complicações , SARS-CoV-2 , Hospitalização , Fatores de Risco
5.
J Clin Apher ; 37(1): 25-30, 2022 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-34726791

RESUMO

BACKGROUND: The off-line extracorporeal photopheresis (ECP) procedure requires photosensitization in an external cell therapy laboratory as per the French regulatory requirement. This regulation results in higher time and costs compared with the on-line alternative performed entirely at the patient's bedside. Recently, full in situ execution of the off-line procedure has been implemented in the Pitié-Salpêtrière Hospital Hemobiotherapy Department (Paris, France). This report summarizes the center's experience regarding the organizational and costs impacts of this change compared with the on-line procedure. MATERIAL AND METHODS: ECP was broken down into stages, and several procedures were monitored prospectively in real-life settings. The total costs associated with both procedures were the sum of the fixed costs and variable costs related to all stages of the procedures, nursing-time costs, property costs, and patient-related production loss costs. RESULTS: Eight off-line ECP and fourteen on-line ECP procedures were monitored during five consecutive days. Procedure duration was not different (median 137.5 vs 154.0 minutes, P = .29). Times and costs associated with nursing were higher but offset by lower fixed costs of the off-line ECP. Total direct costs per procedure associated with using the off-line ECP were significantly lower than those of the on-line procedure (459.6 ± 7.1 EUR vs 953.8 ± 6.5 EUR; P = .0002). Similar results were observed when including the costs of patient production loss. CONCLUSIONS: As a competitive time procedure, the in situ off-line method proved to be cost-efficient by effectively offering similar patient treatment per year compared with the on-line procedure.


Assuntos
Custos e Análise de Custo , Fotoferese/economia , Fotoferese/métodos , Sistemas Automatizados de Assistência Junto ao Leito/economia , França , Humanos , Estudos Prospectivos
6.
Clin Oral Investig ; 26(6): 4479-4486, 2022 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-35435492

RESUMO

OBJECTIVE: The aim of this study was to evaluate the effect of four different finishing procedures on the fatigue strength of a fully stabilized zirconia (5Y-FSZ) material. MATERIALS AND METHODS: Disc-shaped specimens of a 5Y-FSZ (Katana UTML, Kuraray Noritake) were made (ISO 6872-2015), grinded with 600- and 1200-grit silicon carbide paper, sintered as recommended, and randomly assigned into four groups according to the finishing technique: C (control, as-sintered), P (polished with polishing rubbers), G (glaze application - powder/liquid technique), and PG (polished with polishing rubbers + glaze application - powder/liquid). Then fatigue strength (staircase method), X-ray diffraction (XRD), and scanning electron microscopy (SEM) analyses were performed. RESULTS: The C group presented the lowest fatigue strength, while the PG group presented the highest. The P and G groups presented intermediate behavior, presenting similar statistical results. XRD showed similar crystalline phase patterns for all groups. SEM images revealed some changes in the zirconia surface, with the P group presenting some scratches on the surface, while the scratches in the PG group were filled with the glaze material. CONCLUSION: None of the techniques analyzed in this study impaired the fatigue strength of fully stabilized zirconia. Importantly, the polishing rubbers combined with glaze application (PG group) improved its fatigue strength. CLINICAL RELEVANCE: The polishing rubbers followed by glaze application improve the fatigue strength in ultra-translucent zirconia.


Assuntos
Teste de Materiais , Zircônio , Cerâmica/química , Polimento Dentário , Humanos , Microscopia Eletrônica de Varredura , Pós , Propriedades de Superfície , Zircônio/química
7.
J Clin Nurs ; 31(1-2): 111-120, 2022 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-34056783

RESUMO

AIMS: To describe beginning nursing student learning styles and to determine whether there are relationships between learning style and sociodemographic or educational background. We also aim to compare these data with the normative values of the 3.1 version of the Kolb learning style inventory and verify its reliability. BACKGROUND/LITERATURE: Learning style is related to the way in which an individual interacts with learning conditions, involving cognitive, affective, physical and environmental aspects. In nursing education, few studies have focused on knowing the learning styles of beginning nursing students, despite the need for students to develop critical thinking skills required of nurses. DESIGN: Descriptive, cross-sectional, correlational, multi-site study. METHOD: The study took place at five universities in Brazil and one university in the United States. Data were collected from a sample of beginning nursing students (n = 176) in 2019, using the Portuguese and English 3.1 versions of Kolb's learning style inventory. RESULTS: Most students' learning styles were classified as divergers (34.10%), while 28.41% were assimilators, 23.86% were accommodators and 13.63% were convergers. Kolb describes learning as a four-stage cyclical process grounded in experience. The mean score of one learning stage, the concrete experience, showed those who attended public high schools compared with private high schools was higher (mean = 26.22; p = .0019), and there were different results between Brazilian state universities, Brazilian federal universities and the American university (p = .0149). CONCLUSION: The diverger style was the most common among beginning nursing students in Brazil and the United States. There was a significant relationship between learning style, the educational background of students, the type of institution they attend and their previous experience with some active learning methodologies. RELEVANCE TO CLINICAL PRACTICE: Aligned with Kolb's experiential learning theory, nurse educators must be aware of student learning styles so they may use teaching strategies to meet their students' needs.


Assuntos
Estudantes de Enfermagem , Cognição , Estudos Transversais , Humanos , Aprendizagem Baseada em Problemas , Reprodutibilidade dos Testes
8.
Adv Skin Wound Care ; 34(6): 1-10, 2021 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-33979826

RESUMO

OBJECTIVE: To review the clinical and scientific literature on the subjective ways of assessing burn scars and describe their main characteristics. DATA SOURCES: The Latin American, Caribbean Health Sciences Literature, Nursing Database, PubMed, CINAHL, and Scopus and Web of Science databases were used to search for studies published between 2014 and 2018 using descriptors in Portuguese, Spanish, and English. STUDY SELECTION: After establishing the research question and the location and definition of the studies, as well as accounting for differences among databases and application of filters based on inclusion and exclusion criteria, 886 references remained. DATA EXTRACTION: Investigators reviewed the titles and abstracts of the sample and selected 188 relevant studies for full review. DATA SYNTHESIS: Twenty-six subjective forms of assessment were found; most research concerned the Patient and Observer Scar Assessment Scale and the Vancouver Scar Scale. CONCLUSIONS: The Patient and Observer Scar Assessment Scale and the Vancouver Scar Scale are the most common scales for assessing burn scars and have similar evaluation points such as vascularization, pliability, pigmentation, and height, which are the main parameters that contribute to the general assessment and severity of a scar. There is a need to improve instructions for application of the scales to facilitate better understanding and improve agreement among evaluators.


Assuntos
Queimaduras/complicações , Cicatriz/enfermagem , Cicatriz/classificação , Cicatriz/diagnóstico , Competência Clínica/normas , Competência Clínica/estatística & dados numéricos , Humanos
9.
Genet Mol Biol ; 44(3): e20200477, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34555143

RESUMO

Stilbenes are a class of natural compounds with a wide variety of biological effects, such as antitumor activity. The best-known stilbene is resveratrol, whose clinical application is limited due to its low bioavailability. Methoxylated derivatives of this stilbene, including cis-trimethoxystilbene (cis-TMS) and trans-trimethoxystilbene (trans-TMS) have demonstrated more pronounced cytotoxic and anti-proliferative effects than resveratrol. Thus, the objective of this study is to evaluate and compare the cytotoxicity and antiproliferative effects of cis- and trans-TMS in MCF-7 and its normal counterpart MCF-10A. Both compounds were cytotoxic, genotoxic, and induced G2-M accumulation and cell death in the two cell lines. These results suggested that the genotoxicity of cis- and trans-TMS is involved in the reduction of cellular proliferation of MCF-7 and MCF-10A cells, but notably, such antiproliferative effects are more pronounced for cis- than trans-TMS.

10.
J Nat Prod ; 79(6): 1668-78, 2016 06 24.
Artigo em Inglês | MEDLINE | ID: mdl-27227682

RESUMO

Application of a refined procedure of experimental design and chemometric analysis to improve the production of curvularin-related polyketides by a marine-derived Penicillium sp. DRF2 resulted in the isolation and identification of cyclothiocurvularins 6-8 and cyclosulfoxicurvularins 10 and 11, novel curvularins condensed with a mercaptolactate residue. Two additional new curvularins, 3 and 4, are also reported. The structures of the sulfur-bearing curvularins were unambiguously established by analysis of spectroscopic data and by X-ray diffraction analysis. Analysis of stable isotope feeding experiments with [U-(13)C3(15)N]-l-cysteine confirmed the presence of the 2-hydroxy-3-mercaptopropanoic acid residue in 6-8 and the oxidized sulfoxide in 10 and 11. Cyclothiocurvularins A (6) and B (7) are formed by spontaneous reaction between 10,11-dehydrocurvularin (2) and mercaptopyruvate (12) obtained by transamination of cysteine. High ratios of [U-(13)C3(15)N]-l-cysteine incorporation into cyclothiocurvularin B (7), the isolation of two diastereomers of cyclothiocurvularins, the lack of cytotoxicity of cyclothiocurvularin B (7) and its methyl ester (8), and the spontaneous formation of cyclothiocurvularins from 10,11-dehydrocurvularin and mercaptopyruvate provide evidence that the formation of cyclothiocurvularins may well correspond to a 10,11-dehydrocurvularin detoxification process by Penicillium sp. DRF2.


Assuntos
Penicillium/química , Policetídeos/isolamento & purificação , Cristalografia por Raios X , Cisteína , Ensaios de Seleção de Medicamentos Antitumorais , Biologia Marinha , Estrutura Molecular , Ressonância Magnética Nuclear Biomolecular , Policetídeos/química , Policetídeos/farmacologia , Estereoisomerismo , Zearalenona/análogos & derivados , Zearalenona/química
11.
Can J Microbiol ; 62(11): 953-960, 2016 11.
Artigo em Inglês | MEDLINE | ID: mdl-27696898

RESUMO

Cyanobacterial communities on the phyllosphere of 4 plant species inhabiting the endangered Brazilian Atlantic Forest biome were evaluated using cultivation-independent molecular approaches. Total genomic DNA was extracted from cells detached from the surface of leaves of Euterpe edulis, Guapira opposita, Garcinia gardneriana, and Merostachys neesii sampled in 2 Brazilian Atlantic Forest locations along an elevational gradient, i.e., lowland and montane forest. The DNA fingerprinting method PCR-DGGE revealed that the cyanobacterial phyllosphere community structures were mainly influenced by the plant species; geographical location of the plant had little effect. The 16S rRNA gene sequences obtained by clone libraries showed a predominance of nitrogen-fixing cyanobacteria of the order Nostocales, even though the majority of retrieved operational taxonomic units (∼60% of the sequences) showed similarity only to uncultured cyanobacteria phylotypes. The leaf surface of Guapira opposita had the highest richness and diversity of cyanobacteria, whereas the M. neesii (bamboo) had the largest number of copies of cyanobacterial 16S rRNA gene per cm2 of leaf. This study investigated cyanobacteria diversity and its distribution pattern in Atlantic forest phyllosphere. The results indicated that plant species is the main driver of cyanobacteria community assemblage in the phyllosphere and that these communities are made up of a high diversity of cyanobacterial taxa that need to be discovered.

12.
Planta Med ; 82(6): 530-8, 2016 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-27002393

RESUMO

Breast cancer incidence rises worldwide and new chemotherapeutical strategies have been investigated to overcome chemoresistance. (-)-Hinokinin is a dibenzylbutyrolactone lignan derived from the partial synthesis of (-)-cubebin extracted from Piper cubeba seeds. Biological effects of dibenzylbutyrolactone lignans include antiviral, antitumor, anti-inflammatory, and trypanocidal activities. In the present study, we evaluated the ability of (-)-hinokinin to modulate the antiproliferative effects of doxorubicin intumoral (MCF-7 and SKBR-3) and normal (MCF-10 A) breast cell lines. Treatment with (-)-hinokinin did not affect the cellular proliferation or contribute to the antitproliferative effects of doxorubicin in MCF-10 A cells. After 24 and 48 hours of treatment with (-)-hinokinin, MCF-7 and SKBR-3 were accumulated in G2/M and, when combined with doxorubicin, (-)-hinokinin contributed to the antiproliferative effects of this chemotherapic by modulation of the cyclin-dependent kinase inhibitor 1. Apoptotic cell death was observed in response to (-)-hinokinin alone in MCF-7, but not in SKBR-3 even 72 hours after treatment. In MCF-7, doxorubicin-induced apoptosis was not increased by (-)-hinokinin. The findings of the present study suggest (-)-hinokinin as an antiproliferative agent that contributes to the effects of doxorubicin. (-)-Hinokinin modulates apoptotic cell death via the molecular regulation of the cell cycle and apoptotic control genes, but the cellular genetic background directly affects the cell fate decision in response to treatment.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/farmacologia , Neoplasias da Mama/tratamento farmacológico , 4-Butirolactona/administração & dosagem , 4-Butirolactona/análogos & derivados , Benzodioxóis/administração & dosagem , Neoplasias da Mama/genética , Neoplasias da Mama/patologia , Caspase 3/genética , Caspase 3/metabolismo , Linhagem Celular Tumoral , Proliferação de Células/efeitos dos fármacos , Sobrevivência Celular/efeitos dos fármacos , Doxorrubicina/administração & dosagem , Feminino , Pontos de Checagem da Fase G2 do Ciclo Celular/efeitos dos fármacos , Pontos de Checagem da Fase G2 do Ciclo Celular/genética , Regulação Neoplásica da Expressão Gênica/efeitos dos fármacos , Humanos , Concentração Inibidora 50 , Lignanas/administração & dosagem , Pontos de Checagem da Fase M do Ciclo Celular/efeitos dos fármacos , Pontos de Checagem da Fase M do Ciclo Celular/genética
13.
J Adv Nurs ; 72(10): 2508-23, 2016 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-27189899

RESUMO

AIM: The aim of this study was to compare health status, self-efficacy, symptoms of depression and anxiety and post-traumatic stress between two groups of burn victims receiving information on self-care through routine care or an educational programme with telephone reinforcement. BACKGROUND: Self-care post discharge is an important factor on quality of life of burn victims. Reinforcement of self-care programme via telephone follow-up might improve self-efficacy and general health perception in burn victims. DESIGN: Randomized, controlled clinical trial. METHOD: From 2011-2012, we randomized 108 burn victims either to an educational programme on self-care tailored for burn victims according to the cognitive social theory and reinforcement by telephone every 4-6 weeks for 6 months post discharge, or to the routine instructions given at discharge from the hospital. During hospitalization, at discharge, at 6 and 12 months post discharge, we collected data on socio-demographic characteristics, Burns Specific Health Scale Revised (BSHS-R), Perceived Self-Efficacy Scale (PSE), Hospital Anxiety and Depression Scales (HADS) and Impact of the Event Scale (IES). We analysed data using t-test, Chi-square test and linear regression models. RESULTS: Groups were similar regarding clinical and demographic characteristics, except for age. At 6-month follow-up, there were no differences between the groups on BSHS-R, PSE and HADS Depression, while the intervention group showed fewer symptoms of anxiety (HADS Anxiety) and lower IES scores than the control group. CONCLUSION: The educational programme, when compared with usual care, reduced anxiety symptoms and post-traumatic stress. Educational programmes with telephone follow-up might be a viable intervention to improve self-care for burn victims.


Assuntos
Queimaduras , Nível de Saúde , Qualidade de Vida , Telefone , Brasil , Humanos
14.
BMC Vet Res ; 10: 36, 2014 Feb 05.
Artigo em Inglês | MEDLINE | ID: mdl-24495743

RESUMO

BACKGROUND: The repair of large bone defects is a major orthopedic challenge because autologous bone grafts are not available in large amounts and because harvesting is often associated with donor-site morbidity. Considering that bone marrow stromal cells (BMSC) are responsible for the maintenance of bone turnover throughout life, we investigated bone repair at a site of a critically sized segmental defect in sheep tibia treated with BMSCs loaded onto allografts. The defect was created in the mid-portion of the tibial diaphysis of eight adult sheep, and the sheep were treated with ex-vivo expanded autologous BMSCs isolated from marrow aspirates and loaded onto cortical allografts (n = 4). The treated sheep were compared with control sheep that had been treated with cell-free allografts (n = 4) obtained from donors of the same breed as the receptor sheep. RESULTS: The healing response was monitored by radiographs monthly and by computed tomography and histology at six, ten, fourteen, and eighteen weeks after surgery. For the cell-loaded allografts, union was established more rapidly at the interface between the host bone and the allograft, and the healing process was more conspicuous. Remodeling of the allograft was complete at 18 weeks in the cell-treated animals. Histologically, the marrow cavity was reestablished, with intertrabecular spaces being filled with adipose marrow and with evidence of focal hematopoiesis. CONCLUSIONS: Allografts cellularized with AOCs (allografts of osteoprogenitor cells) can generate great clinical outcomes to noncellularized allografts to consolidate, reshape, structurally and morphologically reconstruct bone and bone marrow in a relatively short period of time. These features make this strategy very attractive for clinical use in orthopedic bioengineering.


Assuntos
Transplante Ósseo/veterinária , Transplante de Células-Tronco Mesenquimais/veterinária , Células-Tronco Mesenquimais/fisiologia , Ovinos , Animais , Doenças Ósseas/cirurgia , Regeneração Óssea , Membro Posterior/cirurgia
15.
Artigo em Inglês | MEDLINE | ID: mdl-38953739

RESUMO

BACKGROUND: Thyroid dysfunction has been associated with cognitive decline and dementia. However, the role of subtle thyroid hormone alterations in cognitive function is still debatable. METHODS: Participants without overt thyroid dysfunction aged 35-74 years at baseline were evaluated in three study waves (2008-10, 2012-14, and 2017-19). We assessed baseline thyroid stimulating hormone (TSH), free thyroxine (FT4), and free triiodothyronine (FT3). Cognitive performance was evaluated every four years in each wave using 10-word immediate and late recall, word recognition, semantic (animals category) and phonemic (letter f) verbal fluency, and the trail-making B-version tests. A global composite z-score was derived from these tests. The associations of TSH, FT4, and FT3 levels with cognitive decline over time were evaluated using linear mixed-effect models adjusted for sociodemographic, clinical, and lifestyle variables. RESULTS: In 9,524 participants (mean age 51.2±8.9 years old, 51% women, 52% White), there was no association between baseline TSH, FT4, and FT3 levels and cognitive decline during the follow-up. However, increase in FT4 levels over time was associated with faster memory (ß=-0.004, 95%CI=-0.007; -0.001, p=0.014), verbal fluency (ß=-0.003, 95%CI=-0.007; -0.0005, p=0.021), executive function (ß=-0.004, 95%CI=-0.011; -0.003, p<0.001), and global cognition decline (ß=-0.003, 95%CI=-0.006; -0.001, p=0.001). Decrease in FT4 levels over time was associated with faster verbal fluency (ß=-0.003, 95%CI=-0.007; -0.0004, p=0.025) and executive function (ß=-0.004, 95%CI=-0.007; -0.0003, p=0.031) decline. CONCLUSION: An increase or decrease in FT4 levels over time was associated with faster cognitive decline in middle-aged and older adults without overt thyroid dysfunction during 8 years of follow-up.

16.
Nat Aging ; 2024 Jun 28.
Artigo em Inglês | MEDLINE | ID: mdl-38942982

RESUMO

The EAT-Lancet Commission proposed a planetary health diet to improve human health within planetary boundaries; however, little is known about the association between adherence to this diet and cognitive decline. We used data from three waves of the Brazilian Longitudinal Study of Adult Health to evaluate the association between the planetary health diet and cognitive decline using linear mixed-effects models. Here we show that in 11,737 participants (mean (s.d.) age 51.6 (9.0) years, 54% women and 53% white), higher adherence to the planetary health diet was associated with slower memory decline (P = 0.046) and that income was a modifier in this association (P < 0.001). Adherence to the planetary health diet was associated with slower decline of memory (P = 0.040) and global cognition (P = 0.009) in high-income participants. No association was found among low-income participants. The results of our study highlight that the promotion of healthy dietary patterns should take into consideration income barriers as well as differences in dietary habits to achieve high adherence.

17.
Pharmaceutics ; 16(3)2024 Feb 20.
Artigo em Inglês | MEDLINE | ID: mdl-38543192

RESUMO

Candida albicans can cause various types of oral infections, mainly associated with denture stomatitis. Conventional therapy has been linked to high recurrence, toxicity, and fungal resistance, necessitating the search for new drugs and delivery systems. In this study, caffeic acid phenethyl ester (CAPE) and gellan gum (GG) were studied as an antifungal agent and carrier system, respectively. First, we observed that different GG formulations (0.6 to 1.0% wt/vol) were able to incorporate and release CAPE, reaching a controlled and prolonged release over 180 min at 1.0% of GG. CAPE-GG formulations exhibited antifungal activity at CAPE concentrations ranging from 128 to >512 µg/mL. Furthermore, CAPE-GG formulations significantly decreased the fungal viability of C. albicans biofilms at short times (12 h), mainly at 1.0% of GG (p < 0.001). C. albicans protease activity was also reduced after 12 h of treatment with CAPE-GG formulations (p < 0.001). Importantly, CAPE was not cytotoxic to human keratinocytes, and CAPE-GG formulations at 1.0% decreased the fungal burden (p = 0.0087) and suppressed inflammation in a rat model of denture stomatitis. Altogether, these results indicate that GG is a promising delivery system for CAPE, showing effective activity against C. albicans and potential to be used in the treatment of denture stomatitis.

18.
Trop Med Infect Dis ; 9(4)2024 Apr 22.
Artigo em Inglês | MEDLINE | ID: mdl-38668552

RESUMO

The zoonotic visceral leishmaniasis is caused by the protozoan Leishmania infantum and dogs are reservoirs for this parasite. For the diagnosis of Leishmania at the species level in dogs in formalin-fixed, paraffin-embedded skin (FFPES) samples, colorimetric in situ hybridization (CISH) and quantitative real-time polymerase chain reaction (qPCR) are options, but their sensitivities are not well established. Therefore, the aim of this study was to determine the sensitivity of these two techniques in FFPES for the diagnosis of the L. infantum infection in dogs using culture as the reference standard. The FFPES of 48 dogs with cutaneous infection by L. infantum confirmed by culture and by multilocus enzyme electrophoresis were examined by CISH and qPCR using specific probes for L. infantum. The sensitivities of qPCR, CISH and their combination were, respectively, 77.0%, 58.0% and 83.3%. The sensitivities of qPCR in dogs with and without clinical signs were, respectively, 74.2% and 82.4%. The sensitivities of CISH in dogs with and without clinical signs were, respectively, 61.3% and 52.9%. The CISH and qPCR showed satisfactory sensitivities for the diagnosis of L. infantum in the FFPES of dogs, even in dogs without clinical signs, and their combination increases the sensitivity for this diagnosis.

19.
Res Nurs Health ; 36(3): 299-310, 2013 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-23494960

RESUMO

The aims of this study were to adapt the Body Image Quality of Life Inventory (BIQLI) into Brazilian Portuguese (BP) and to assess the psychometric properties of the adapted version. Construct validity was assessed by correlating the BIQLI-BP scores with the Rosenberg's Self-Esteem Scale, with Burns Specific Health Scale-Revised (BSHS-R), and with gender, total body surface area burned, and visibility of the scars. Participants were 77 adult burn patients. Cronbach's alpha for the adapted version was .90 and moderate linear correlations were found between body image and self-esteem and between BIQLI-BP scores and two domains of the BSHS-R: affect and body image and interpersonal relationships. The BIQLI-BP showed acceptable levels of reliability and validity for Brazilian burn patients.


Assuntos
Imagem Corporal/psicologia , Queimaduras/psicologia , Testes Psicológicos/normas , Qualidade de Vida/psicologia , Autoimagem , Adulto , Brasil , Avaliação da Deficiência , Feminino , Indicadores Básicos de Saúde , Humanos , Masculino , Pessoa de Meia-Idade , Reprodutibilidade dos Testes , Inquéritos e Questionários/normas
20.
J Gerontol B Psychol Sci Soc Sci ; 78(4): 620-628, 2023 04 01.
Artigo em Inglês | MEDLINE | ID: mdl-36625082

RESUMO

OBJECTIVES: Excess sugar consumption, particularly in sugar-sweetened beverages (SSBs), has been linked to poor cognitive performance. We aimed to assess the association of consumption of total sugar, as well as the consumption of SSBs, solid desserts, and 100% fruit juice with cognitive performance among older adults. METHODS: Consumption of total sugar, SSBs, solid desserts, and 100% fruit juice were obtained from the 24-hr recall interview. Cognitive performance was evaluated using the Consortium to Establish a Registry for Alzheimer's Disease word list, the Animal Fluency Test, and the Digit Symbol Substitution Test. Binary logistic regression models were used to evaluate the association between consumption of sugar (total and from different sources) and cognitive performance. RESULTS: A total of 1,938 participants aged 60 years or older from the National Health and Nutrition Examination Survey 2011-2014 were included. Compared to the lowest tertile, the highest tertile of total sugar consumption was independently associated with higher odds of low memory performance (odds ratio [OR] = 1.87, 95% confidence interval [CI] = 1.00; 3.50, p = .049). Consumption of SSBs was associated with higher risk of low memory (OR = 1.58, 95% CI = 1.11; 2.25, p = .014), whereas consumption of solid desserts was associated with lower risk of low verbal fluency performance (OR = 0.62, 95% CI = 0.41; 0.95, p = .032). DISCUSSION: Higher consumption of total sugars and SSBs was associated with lower memory performance, while consumption of solid desserts was associated with higher verbal fluency performance.


Assuntos
Bebidas , Açúcares , Animais , Humanos , Bebidas/análise , Inquéritos Nutricionais , Cognição , Açúcares da Dieta/efeitos adversos
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