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1.
Rev. enferm. UERJ ; 32: e79505, jan. -dez. 2024.
Artículo en Inglés, Español, Portugués | LILACS-Express | LILACS | ID: biblio-1556312

RESUMEN

Objetivo: compreender o cuidado em saúde dispensado às pessoas LGBTQIAP+ por profissionais em Unidades Básicas de Saúde, a partir do referencial teórico da Política Nacional de Saúde LGBT (PNSILGBT) estabelecida pelo Sistema Único de Saúde (SUS). Método: estudo descritivo, com abordagem qualitativa, que entrevistou 12 profissionais de saúde da Atenção Básica. Os dados coletados passaram pela Análise Lexical utilizando-se do software IRAMUTEQ. Resultados: emergiram três categorias temáticas que possibilitaram compreender que os profissionais reconhecem as violências praticadas na assistência a essa população, as barreiras no acesso e as dificuldades enfrentadas por pessoas LGBTQIAP+. Considerações finais: o desconhecimento das políticas e a não percepção das consequências dessas ações para a saúde dessa população remete muito mais ao (des)cuidado do que efetivamente ao cuidado condizente as suas reais necessidades em saúde.


Objective: to understand the health care provided to LGBTQIAP+ people by professionals in Primary Care Centers, based on the theoretical framework of the National LGBT Health Policy (PNSILGBT) established by the Unified Health System (SUS). Method: a descriptive study with a qualitative approach, which interviewed 12 primary care health professionals. The data collected was subjected to Lexical Analysis using the IRAMUTEQ software. Results: Three thematic categories emerged which made it possible to understand that professionals recognize the violence practiced in assisting this population, the barriers to access and the difficulties faced by LGBTQIAP+ people. Final considerations: the lack of knowledge of the policies and the lack of perception of the consequences of these actions for the health of this population leads much more to (lack of)care than to care in line with their real health needs.


Objetivo: comprender el cuidado en salud brindado a las personas LGBTQIAP+ por profesionales en Unidades Básicas de Salud, partiendo del marco teórico de la Política Nacional de Salud LGBT (PNSILGBT) establecida por el Sistema Único de Salud (SUS). Método: estudio descriptivo, con enfoque cualitativo, que entrevistó a 12 profesionales de salud de la Atención Básica. Los datos recogidos fueron analizados mediante Análisis Léxico utilizando el software IRAMUTEQ. Resultados: surgieron tres categorías temáticas que permitieron comprender que los profesionales reconocen las violencias ejercidas en la asistencia a esta población, las barreras en el acceso y las dificultades enfrentadas por personas LGBTQIAP+. Consideraciones finales: el desconocimiento de las políticas y la no percepción de las consecuencias de estas acciones para la salud de esta población reflejan mucho más el (des)cuido que efectivamente el cuidado acorde a sus reales necesidades en salud.

2.
bioRxiv ; 2024 Sep 09.
Artículo en Inglés | MEDLINE | ID: mdl-39314488

RESUMEN

ß-hydroxybutyrate (BHB) is an abundant ketone body. To date, all known pathways of BHB metabolism involve interconversion of BHB and primary energy intermediates. Here we show that CNDP2 controls a previously undescribed secondary BHB metabolic pathway via enzymatic conjugation of BHB and free amino acids. This BHB-ylation reaction produces a family of endogenous ketone metabolites, the BHB-amino acids. Genetic ablation of CNDP2 in mice eliminates tissue amino acid BHB-ylation activity and reduces BHB-amino acid levels. Administration of BHB-Phe, the most abundant BHB-amino acid, to obese mice activates neural populations in the hypothalamus and brainstem and suppresses feeding and body weight. Conversely, CNDP2-KO mice exhibit increased food intake and body weight upon ketosis stimuli. CNDP2-dependent amino acid BHB-ylation and BHB-amino acid metabolites are also conserved in humans. Therefore, the metabolic pathways of BHB extend beyond primary metabolism and include secondary ketone metabolites linked to energy balance.

3.
J Appl Oral Sci ; 32: e20230462, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-39140577

RESUMEN

OBJECTIVE: Several materials have been developed to preserve pulp vitality. They should have ideal cytocompatibility characteristics to promote the activity of stem cells of human exfoliated deciduous teeth (SHED) and thus heal pulp tissue. OBJECTIVE: To evaluate the cytotoxicity of different dilutions of bioceramic material extracts in SHED. METHODOLOGY: SHED were immersed in αMEM + the material extract according to the following experimental groups: Group 1 (G1) -BBio membrane, Group 2 (G2) - Bio-C Repair, Group 3 (G3) - MTA Repair HP, Group 4 (G4) - TheraCal LC, and Group 5 (G5) - Biodentine. Positive and negative control groups were maintained respectively in αMEM + 10% FBS and Milli-Q Water. The methods to analyze cell viability and proliferation involved MTT and Alamar Blue assays at 24, 48, and 72H after the contact of the SHED with bioceramic extracts at 1:1 and 1:2 dilutions. Data were analyzed by the three-way ANOVA, followed by Tukey's test (p<0.05). RESULTS: At 1:1 dilution, SHED in contact with the MTA HP Repair extract showed statistically higher cell viability than the other experimental groups and the negative control (p<0.05), except for TheraCal LC (p> 0.05). At 1:2 dilution, BBio Membrane and Bio-C showed statistically higher values in intra- and intergroup comparisons (p<0.05). BBio Membrane, Bio-C Repair, and Biodentine extracts at 1:1 dilution showed greater cytotoxicity than 1:2 dilution in all periods (p<0.05). CONCLUSION: MTA HP Repair showed the lowest cytotoxicity even at a 1:1 dilution. At a 1:2 dilution, the SHED in contact with the BBio membrane extract showed high cell viability. Thus, the BBio membrane would be a new non-cytotoxic biomaterial for SHED. Results offer possibilities of biomaterials that can be indicated for use in clinical regenerative procedures of the dentin-pulp complex.


Asunto(s)
Compuestos de Aluminio , Materiales Biocompatibles , Compuestos de Calcio , Proliferación Celular , Supervivencia Celular , Cerámica , Pulpa Dental , Combinación de Medicamentos , Ensayo de Materiales , Óxidos , Silicatos , Células Madre , Diente Primario , Humanos , Diente Primario/efectos de los fármacos , Silicatos/química , Silicatos/toxicidad , Silicatos/farmacología , Supervivencia Celular/efectos de los fármacos , Compuestos de Calcio/química , Compuestos de Calcio/farmacología , Compuestos de Calcio/toxicidad , Células Madre/efectos de los fármacos , Factores de Tiempo , Óxidos/química , Óxidos/toxicidad , Proliferación Celular/efectos de los fármacos , Pulpa Dental/efectos de los fármacos , Pulpa Dental/citología , Cerámica/química , Cerámica/toxicidad , Compuestos de Aluminio/química , Compuestos de Aluminio/toxicidad , Materiales Biocompatibles/química , Materiales Biocompatibles/farmacología , Análisis de Varianza , Reproducibilidad de los Resultados , Bismuto/química , Bismuto/toxicidad , Bismuto/farmacología , Células Cultivadas , Valores de Referencia , Sales de Tetrazolio , Xantenos/química , Oxazinas
4.
J Mech Behav Biomed Mater ; 158: 106678, 2024 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-39096683

RESUMEN

OBJECTIVE: Analyze the effects of the functionalization of pre-functionalized GIC particles with chlorhexidine on the physicochemical properties and antimicrobial activity. MATERIALS AND METHODS: Four groups were prepared: (1) GIC (Bioglass R - Biodinamica) - control group; (2) GIC-CHX 1%: Group containing 1% pre-reacted CHX particles; (3) GIC-CHX 2.5%: Group containing 2.5% pre-reacted CHX particles; (4) GIC-CHX 5%: Group containing 5% pre-reacted CHX particles. Hourglass-shaped specimens (10 mm × 2 mm x 1 mm) were fabricated for mechanical tests including cohesive strength (n = 12), modulus of elasticity (n = 12) and microhardness (n = 10). Discs (10 mm × 2 mm) were prepared for the analysis of Ca+2, PO4- and F- ions release (n = 3), and roughness (n = 12). To evaluate the setting time, a Gilmore needle was used according to ISO 9917-1:2016. Disk-shaped specimens (5 × 1mm) were manufactured and subjected to bacterial activity (n = 9) (Streptococcus mutans ATCC 159). RESULTS: Modulus, roughness, setting time and ions release (Ca+2, PO4-, and F-) there were no statistically significant differences among the groups (p > 0.05). The setting time did not change with the incorporation of CHX. The GIC-CHX 2.5% and GIC-CHX 5% groups exhibited superior antibacterial activity compared to the control group and GIC-CHX 1% (p < 0.001). The GIC-CHX 5% group showed the highest microhardness values (p < 0.041), cohesive strength (p < 0.009) when compared to the control group. CONCLUSION: The pre-reacted CHX in GICs was able to confer antimicrobial activity, improve cohesive strength, microhardness, and did not impair ion release, setting time, and roughness.


Asunto(s)
Clorhexidina , Cementos de Ionómero Vítreo , Ensayo de Materiales , Clorhexidina/química , Clorhexidina/farmacología , Cementos de Ionómero Vítreo/química , Cementos de Ionómero Vítreo/farmacología , Antiinfecciosos/farmacología , Antiinfecciosos/química , Streptococcus mutans/efectos de los fármacos , Dureza , Fenómenos Mecánicos , Propiedades de Superficie , Fenómenos Químicos , Antibacterianos/farmacología , Antibacterianos/química
5.
Food Chem ; 460(Pt 3): 140826, 2024 Dec 01.
Artículo en Inglés | MEDLINE | ID: mdl-39167868

RESUMEN

The aim of this study was to evaluate the impact of non-thermal methods, using high hydrostatic pressure (HHP) and pulsed electric field (PEF), on the dual modification of quinoa starch and to analyze the microstructural, morphological, thermal, pasting, and texture properties. Starch was treated with HHP at 400 MPa for 10 min, while PEF was applied using voltages of 10 and 30 kV cm-1 for a total time of 90s. The modification techniques were effective in breaking down amylose molecules and amylopectin branches, where for the dual treatment, higher values of DP6-12 were found. The average diameter and gelatinization temperatures were elevated after HHP, thus forming clusters that require more energy for paste formation. The use of 30 kV cm-1 and 400 MPa (HP30) in starch facilitates the creation of new food products with better texture, stability and nutritional value, making them suitable for use in food emulsions and the cosmetics industry.


Asunto(s)
Chenopodium quinoa , Presión Hidrostática , Almidón , Chenopodium quinoa/química , Almidón/química , Electricidad , Manipulación de Alimentos , Calor , Amilosa/química
6.
Int J Mol Sci ; 25(14)2024 Jul 09.
Artículo en Inglés | MEDLINE | ID: mdl-39062747

RESUMEN

Salivary glands' neoplasms are hard to diagnose and present a complex etiology. However, several viruses have been detected in these neoplasms, such as HCMV, which can play a role in certain cancers through oncomodulation. The co-infections between HCMV with betaherpesviruses (HHV-6 and HHV-7) and polyomaviruses (JCV and BKV) has been investigated. The aim of the current study is to describe the frequency of HCMV and co-infections in patients presenting neoplastic and non-neoplastic lesions, including in the salivary gland. Multiplex quantitative polymerase chain reaction was used for betaherpesvirus and polyomavirus quantification purposes after DNA extraction. In total, 50.7% of the 67 analyzed samples were mucocele, 40.3% were adenoma pleomorphic, and 8.9% were mucoepidermoid carcinoma. Overall, 20.9% of samples presented triple-infections with HCMV/HHV-6/HHV-7, whereas 9.0% were co-infections with HCMV/HHV-6 and HCMV/HHV-7. The largest number of co-infections was detected in pleomorphic adenoma cases. All samples tested negative for polyomaviruses, such as BKV and JCV. It was possible to conclude that HCMV can be abundant in salivary gland lesions. A high viral load can be useful to help better understand the etiological role played by viruses in these lesions. A lack of JCV and BKV in the samples analyzed herein does not rule out the involvement of these viruses in one or more salivary gland lesion subtypes.


Asunto(s)
Coinfección , Infecciones por Citomegalovirus , Citomegalovirus , Neoplasias de las Glándulas Salivales , Glándulas Salivales , Humanos , Coinfección/virología , Infecciones por Citomegalovirus/virología , Infecciones por Citomegalovirus/diagnóstico , Citomegalovirus/genética , Citomegalovirus/aislamiento & purificación , Masculino , Femenino , Neoplasias de las Glándulas Salivales/virología , Persona de Mediana Edad , Adulto , Anciano , Glándulas Salivales/virología , Glándulas Salivales/patología , Adenoma/virología , Anciano de 80 o más Años , Carcinoma/virología , ADN Viral/genética , ADN Viral/análisis , Adulto Joven , Adolescente
7.
Artículo en Inglés | MEDLINE | ID: mdl-38830266

RESUMEN

The effects of exogenous ketones on appetite and food intake remain elusive, especially for people with type 2 diabetes (T2D). This study aimed to determine whether acute ingestion of an oral ketone monoester supplement (KME) affected appetite sensations, prospective food consumption and intake in T2D. Results showed that acute KME ingestion did not significantly alter appetite scores. However, there was a tendency for lower energy intake during an ad libitum meal 3 h following ketone ingestion compared to non-energetic placebo. Further research is warranted to understand the long-term effects of exogenous ketones for energy and macronutrient intake in T2D.

8.
Food Chem ; 453: 139688, 2024 Sep 30.
Artículo en Inglés | MEDLINE | ID: mdl-38761722

RESUMEN

The aim of this study was to evaluate the effect of freezing rates using direct (LF: Liquid nitrogen) and indirect (RF: Cryogenic refrigerator and UF: ultra-freezer) methods at temperatures of (-20, -80, and - 196 °C) on the enzymatic susceptibility with α-amylase for microparticles. In vitro digestibility parameters and technological properties were also analyzed. Lower rates resulted in larger ice crystals, damaging the starch structure. Hydrolysis was more pronounced at slower rates RF: 0.07 °C/min and UF: 0.14 °C/min, yielding maximum values of RDS: 37.63% and SDS: 59.32% for RF. Type A crystallinity remained unchanged, with only a noted increase in crystallinity of up to 6.50% for FR. Starch pastes were classified as pseudoplastic, with RF exhibiting superior textural parameters and apparent viscosity. (RF: 7.18 J g-1 and UF: 7.34 J g-1) also showed lower values of gelatinization enthalpy. Freezing techniques were viable in facilitating the diffusion of α-amylase and reducing RS by up to 81%.


Asunto(s)
Digestión , Congelación , Almidón , alfa-Amilasas , Almidón/química , Almidón/metabolismo , alfa-Amilasas/química , alfa-Amilasas/metabolismo , Hidrólisis , Viscosidad , Tamaño de la Partícula
9.
J Adhes Dent ; 26: 103-116, 2024 04 11.
Artículo en Inglés | MEDLINE | ID: mdl-38602234

RESUMEN

PURPOSE: To investigate the antibacterial effects of Terminalia catappa Linn (TCL) leaf extracts at different concentrations and the effects of these extracts used as primers on the long-term adhesive properties of two universal adhesives. MATERIALS AND METHODS: After extract preparation, the antimicrobial and antibacterial activities of TCL against Streptococcus mutans (UA 159) were assessed in microdilution assays to provide the minimal inhibitory concentration (MIC) and minimal bactericidal concentration (MBC). Additionally, to provide quantitative data on the ability of TCL extract to reduce cell viability, colony forming units (CFU) were counted. To examine adhesive properties, 288 human molars were randomly assigned to 32 experimental conditions (n = 9) according to the following variables: (1) treatment agent: negative control (untreated surface), and primers at concentrations of 1xMIC, 5xMIC, and 10xMIC; (2) adhesives: Scotchbond Universal (SBU) and Futurabond Universal (FBU); (3) adhesive strategy: etch-and-rinse (ER) or self-etch (SE); and (4) storage time: 24 h or after 2 years. Primers were applied for 60 s, upon which the teeth were incrementally restored and sectioned into adhesive-dentin bonded sticks. These were tested for microtensile bond strength (µTBS) and nanoleakage (NL) after 24-h and 2-year water storage, as well as in-situ degree of conversion (DC) at 24 h. The chemical profile of the hybrid layer was determined via micro-Raman spectroscopy. Biofilm assay data were analyzed using the Kruskal-Wallis test; the pH of culture media and the chemical profile were analyzed by one-way ANOVA. The adhesive properties (µTBS, NL, DC) were evaluated using a four-way ANOVA and Tukey's test. Significance was set at 5%. RESULTS: Similar values of MIC and MBC were observed (2 mg/ml), showing bactericidal potential. CFU analysis demonstrated that concentrations of 5xMIC and 10xMIC significantly inhibited biofilm formation (p < 0.001). The application of the TCL primer at all concentrations significantly increased the immediate µTBS and DC, and decreased the immediate NL values when compared to the control group (p < 0.05), regardless of the adhesive and adhesive strategies. Despite an increase in the NL values for all groups after 2 years (p > 0.05), in groups where the TCL primer was applied, the µTBS remained constant after 2 years for both adhesives, while a decrease in the µTBS was observed in the control groups (p < 0.05). Usually, 10xMIC showed better results than 1xMIC and 5xMIC (p < 0.05). The application of TCL promoted cross-linking; cross-linking rates increased proportionally to the concentration of TCL (p < 0.05). CONCLUSION: Primers containing TCL promoted bactericidal and bacteriostatic action, as well as cross-linking with dentin, while maintaining the adhesive properties of the adhesive-dentin interface after 2 years of water storage.


Asunto(s)
Recubrimiento Dental Adhesivo , Terminalia , Humanos , Cementos Dentales/farmacología , Cementos Dentales/química , Recubrimientos Dentinarios/farmacología , Recubrimientos Dentinarios/química , Resinas Compuestas/química , Dentina , Resistencia a la Tracción , Cementos de Resina/farmacología , Cementos de Resina/química , Agua/química , Antibacterianos/farmacología , Ensayo de Materiales
10.
Small ; 20(33): e2311109, 2024 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-38597752

RESUMEN

Controlling the nanomorphology in bulk heterojunction photoactive blends is crucial for optimizing the performance and stability of organic photovoltaic (OPV) technologies. A promising approach is to alter the drying dynamics and consequently, the nanostructure of the blend film using solvent additives such as 1,8-diiodooctane (DIO). Although this approach is demonstrated extensively for OPV systems incorporating fullerene-based acceptors, it is unclear how solvent additive processing influences the morphology and stability of nonfullerene acceptor (NFA) systems. Here, small angle neutron scattering (SANS) is used to probe the nanomorphology of two model OPV systems processed with DIO: a fullerene-based system (PBDB-T:PC71BM) and an NFA-based system (PBDB-T:ITIC). To overcome the low intrinsic neutron scattering length density contrast in polymer:NFA blend films, the synthesis of a deuterated NFA analog (ITIC-d52) is reported. Using SANS, new insights into the nanoscale evolution of fullerene and NFA-based systems are provided by characterizing films immediately after fabrication, after thermal annealing, and after aging for 1 year. It is found that DIO processing influences fullerene and NFA-based systems differently with NFA-based systems characterized by more phase-separated domains. After long-term aging, SANS reveals both systems demonstrate some level of thermodynamic induced domain coarsening.

11.
Sci Rep ; 14(1): 8444, 2024 04 10.
Artículo en Inglés | MEDLINE | ID: mdl-38600105

RESUMEN

In bovines few studies addressed the contribution of adipose tissue to the host immune response to infection. Here we evaluated the in vitro response of bovine adipose tissue stromal vascular fraction (SVF) cells to the protozoan parasite Neospora caninum, using live and freeze-killed tachyzoites. Live N. caninum induced the production of IL-6, IL-1ß and IL-10 by SVF cells isolated from subcutaneous adipose tissue (SAT), while in mesenteric adipose tissue (MAT) SVF cell cultures only IL-1ß and IL-10 production was increased, showing slight distinct responses between adipose tissue depots. Whereas a clear IL-8 increase was detected in peripheral blood leucocytes (PBL) culture supernatants in response to live N. caninum, no such increase was observed in SAT or MAT SVF cell cultures. Nevertheless, in response to LPS, increased IL-8 levels were detected in all cell cultures. IL-10 levels were always increased in response to stimulation (live, freeze-killed N. caninum and LPS). Overall, our results show that bovine adipose tissue SVF cells produce cytokines in response to N. caninum and can therefore be putative contributors to the host immune response against this parasite.


Asunto(s)
Coccidiosis , Neospora , Animales , Bovinos , Interleucina-10 , Interleucina-8 , Lipopolisacáridos/farmacología , Fracción Vascular Estromal , Citocinas , Tejido Adiposo , Coccidiosis/parasitología
12.
Commun Biol ; 7(1): 154, 2024 Feb 06.
Artículo en Inglés | MEDLINE | ID: mdl-38321111

RESUMEN

Mapping the cellular refractive index (RI) is a central task for research involving the composition of microorganisms and the development of models providing automated medical screenings with accuracy beyond 95%. These models require significantly enhancing the state-of-the-art RI mapping capabilities to provide large amounts of accurate RI data at high throughput. Here, we present a machine-learning-based technique that obtains a biological specimen's real-time RI and thickness maps from a single image acquired with a conventional color camera. This technology leverages a suitably engineered nanostructured membrane that stretches a biological analyte over its surface and absorbs transmitted light, generating complex reflection spectra from each sample point. The technique does not need pre-existing sample knowledge. It achieves 10-4 RI sensitivity and sub-nanometer thickness resolution on diffraction-limited spatial areas. We illustrate practical application by performing sub-cellular segmentation of HCT-116 colorectal cancer cells, obtaining complete three-dimensional reconstruction of the cellular regions with a characteristic length of 30 µm. These results can facilitate the development of real-time label-free technologies for biomedical studies on microscopic multicellular dynamics.


Asunto(s)
Refractometría , Humanos , Células HCT116
13.
Cureus ; 16(1): e51860, 2024 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-38327956

RESUMEN

Blastic plasmacytoid dendritic cell neoplasm (BPDCN) is an exceedingly rare and aggressive hematologic malignancy. In the current World Health Organization classification, it is classified among histiocytic/dendritic cell neoplasms. This report describes the case of an 85-year-old female with a complex medical history, including rheumatoid arthritis, who presented with a one-month history of low-grade fever, anorexia, and unexplained weight loss. The diagnosis of BPDCN was confirmed following an immunophenotyping analysis of a bone marrow aspirate. With this report, the authors intend to shed some light on BPDCN's clinical presentation, diagnostic journey, therapeutic approaches, and patient outcomes, and denote the significance of early detection and interdisciplinary collaboration in enhancing patient care.

14.
Clin Exp Immunol ; 216(1): 89-103, 2024 03 12.
Artículo en Inglés | MEDLINE | ID: mdl-38195093

RESUMEN

Pre-clinical and cell culture evidence supports the role of the ketone beta-hydroxybutyrate (BHB) as an immunomodulatory molecule that may inhibit inflammatory signalling involved in several chronic diseases such as type 2 diabetes (T2D), but studies in humans are lacking. Therefore, we investigated the anti-inflammatory effect of BHB in humans across three clinical trials. To investigate if BHB suppressed pro-inflammatory cytokine secretion, we treated LPS-stimulated leukocytes from overnight-fasted adults at risk for T2D with BHB (Study 1). Next (Study 2), we investigated if exogenously raising BHB acutely in vivo by ketone monoester supplementation (KME) in adults with T2D would suppress pro-inflammatory plasma cytokines. In Study 3, we investigated the effect of BHB on inflammation via ex vivo treatment of LPS-stimulated leukocytes with BHB and in vivo thrice-daily pre-meal KME for 14 days in adults with T2D. Ex vivo treatment with BHB suppressed LPS-stimulated IL-1ß, TNF-α, and IL-6 secretion and increased IL-1RA and IL-10 (Study 1). Plasma IL-10 increased by 90 min following ingestion of a single dose of KME in T2D, which corresponded to peak blood BHB (Study 2). Finally, 14 days of thrice-daily KME ingestion did not significantly alter plasma cytokines or leukocyte subsets including monocyte and T-cell polarization (Study 3). However, direct treatment of leukocytes with BHB modulated TNF-α, IL-1ß, IFN-γ, and MCP-1 secretion in a time- and glucose-dependent manner (Study 3). Therefore, BHB appears to be anti-inflammatory in T2D, but this effect is transient and is modulated by the presence of disease, glycaemia, and exposure time.


Asunto(s)
Diabetes Mellitus Tipo 2 , Interleucina-10 , Adulto , Humanos , Ácido 3-Hidroxibutírico/farmacología , Ácido 3-Hidroxibutírico/uso terapéutico , Diabetes Mellitus Tipo 2/tratamiento farmacológico , Cetonas/uso terapéutico , Factor de Necrosis Tumoral alfa , Lipopolisacáridos , Inflamación/tratamiento farmacológico , Citocinas , Antiinflamatorios/uso terapéutico , Interleucina-1beta , Inmunidad
15.
Am J Physiol Endocrinol Metab ; 326(1): E61-E72, 2024 01 01.
Artículo en Inglés | MEDLINE | ID: mdl-37991451

RESUMEN

Acute ingestion of the exogenous ketone monoester supplement [(R)-3-hydroxybutyl-(R)-3-hydroxybutyrate] lowers blood glucose, suggesting therapeutic potential in individuals with impaired glucose metabolism. However, it is unknown how acute or repeated ingestion of exogenous ketones affects blood glucose control in individuals with type 2 diabetes (T2D). We conducted two randomized, counterbalanced, double-blind, placebo-controlled crossover trials to determine if 1) acute exogenous ketone monoester (0.3 g/kg body mass; N = 18) or 2) 14-day thrice daily premeal exogenous ketone monoester (15 g; N = 15) supplementation could lower blood glucose in individuals living with T2D. A single dose of the ketone monoester supplement elevated blood ß-OHB to ∼2 mM. There were no differences in the primary outcomes of plasma glucose concentration (acutely) or serum fructosamine (glycemic control across 14 days) between conditions. Ketone monoester ingestion acutely increased insulin and lowered nonesterified fatty acid concentrations; plasma metabolomics confirmed a reduction in multiple free fatty acids species and select gluconeogenic amino acids. In contrast, no changes were observed in fasting metabolic outcomes following 14 days of supplementation. In the context of these randomized controlled trials, acute or repeated ketone monoester ingestion in adults with T2D did not lower blood glucose when consumed acutely in a fasted state and did not improve glycemic control following thrice daily premeal ingestion across 14 days. Future studies exploring the mechanistic basis for the (lack of) glucose-lowering effect of exogenous ketone supplementation in T2D and other populations are warranted.NEW & NOTEWORTHY Exogenous ketone supplements can acutely lower blood glucose, suggesting therapeutic potential in individuals with impaired glucose metabolism. However, the effect of exogenous ketones on glucose metabolism in adults with type 2 diabetes has not been investigated in a controlled setting. In adults with type 2 diabetes, ketone monoester ingestion did not lower blood glucose acutely in a fasted state and did not improve glycemic control across thrice daily premeal ingestion across 14 days.


Asunto(s)
Diabetes Mellitus Tipo 2 , Cetonas , Humanos , Adulto , Cetonas/farmacología , Glucemia/metabolismo , Diabetes Mellitus Tipo 2/tratamiento farmacológico , Control Glucémico , Ácido 3-Hidroxibutírico , Ensayos Clínicos Controlados Aleatorios como Asunto , Suplementos Dietéticos
16.
Adv Physiol Educ ; 48(1): 49-60, 2024 Mar 01.
Artículo en Inglés | MEDLINE | ID: mdl-38059282

RESUMEN

The changing landscape of academia can be difficult to navigate for anyone at any point throughout their career. One thing is certainly clear: effective mentorship is key to ensuring success, fueling scientific curiosity, and creating a sense of community. This article is a collection of personal reflections and stories, offering advice directed to aspiring and junior graduate trainees; it is written by Ph.D. students, postdoctoral researchers, early-stage assistant professors, and life-long educators. The objective of this article is to inform, empower, and inspire the next generation of physiologists.NEW & NOTEWORTHY This article is a collection of personal reflections and stories, offering advice directed to aspiring and junior graduate trainees that is written by Ph.D. students, postdoctoral researchers, early-stage assistant professors, and life-long educators. The objective of this article is to inform, empower, and inspire the next generation of physiologists.


Asunto(s)
Mentores , Estudiantes , Humanos , Escritura , Selección de Profesión
17.
São Paulo med. j ; 142(1): e2022681, 2024. tab, graf
Artículo en Inglés | LILACS-Express | LILACS | ID: biblio-1442193

RESUMEN

ABSTRACT BACKGROUND: Considering the ability of the health and self-management in diabetes questionnaire (HASMID-10) to verify the impact of self-management on diabetes, we highlight its relevance to scientific research and clinical applicability. However, to date, no study has been conducted to scientifically support its use in other languages. OBJECTIVE: To translate, cross-culturally adapt, and validate the HASMID-10 into the Brazilian Portuguese. DESIGN AND SETTING: A translation, cross-cultural adaptation, and validation study conducted at Ceuma University. METHODS: Study was conducted in accordance with the Guidelines for the Process of Cross-Cultural Adaptation of Self-Report Measures and Consensus-based Standards for the Selection of Health Measurement Instruments. We included participants of both sexes diagnosed with diabetes, aged between 18 and 64 years, and without cognitive deficits or any other limitations that would prevent them from answering the questionnaire. We assessed participants using the problem areas in diabetes (PAID) scale and HASMID-10. We assessed reliability using a test-retest model with a 7-day interval between assessments. We used intraclass correlation coefficient (ICC), 95% confidence interval (CI), standard error of measurement (SEM), minimum detectable difference (MDD), Spearman correlation coefficient, and floor and ceiling effects. RESULTS: Sample comprised 116 participants, most of whom were women, overweight, non-practitioners of physical activity, and nonsmokers. We observed significant correlations (P = 0.006; rho = −0.256) between the HASMID-10 and PAID, adequate reliability (ICC = 0.780) and internal consistency (Cronbach's alpha = 0.796). No ceiling or floor effects were observed. CONCLUSION: HASMID-10 has adequate measurement properties and may be used for Brazilians.

18.
J. appl. oral sci ; 32: e20230462, 2024. tab, graf
Artículo en Inglés | LILACS-Express | LILACS | ID: biblio-1569299

RESUMEN

Abstract Several materials have been developed to preserve pulp vitality. They should have ideal cytocompatibility characteristics to promote the activity of stem cells of human exfoliated deciduous teeth (SHED) and thus heal pulp tissue. Objective To evaluate the cytotoxicity of different dilutions of bioceramic material extracts in SHED. Methodology SHED were immersed in αMEM + the material extract according to the following experimental groups: Group 1 (G1) -BBio membrane, Group 2 (G2) - Bio-C Repair, Group 3 (G3) - MTA Repair HP, Group 4 (G4) - TheraCal LC, and Group 5 (G5) - Biodentine. Positive and negative control groups were maintained respectively in αMEM + 10% FBS and Milli-Q Water. The methods to analyze cell viability and proliferation involved MTT and Alamar Blue assays at 24, 48, and 72H after the contact of the SHED with bioceramic extracts at 1:1 and 1:2 dilutions. Data were analyzed by the three-way ANOVA, followed by Tukey's test (p<0.05). Results At 1:1 dilution, SHED in contact with the MTA HP Repair extract showed statistically higher cell viability than the other experimental groups and the negative control (p<0.05), except for TheraCal LC (p> 0.05). At 1:2 dilution, BBio Membrane and Bio-C showed statistically higher values in intra- and intergroup comparisons (p<0.05). BBio Membrane, Bio-C Repair, and Biodentine extracts at 1:1 dilution showed greater cytotoxicity than 1:2 dilution in all periods (p<0.05). Conclusion MTA HP Repair showed the lowest cytotoxicity even at a 1:1 dilution. At a 1:2 dilution, the SHED in contact with the BBio membrane extract showed high cell viability. Thus, the BBio membrane would be a new non-cytotoxic biomaterial for SHED. Results offer possibilities of biomaterials that can be indicated for use in clinical regenerative procedures of the dentin-pulp complex.

19.
Braz. dent. sci ; 27(2): 1-8, 2024. tab
Artículo en Inglés | LILACS, BBO | ID: biblio-1568517

RESUMEN

Objective: This study aimed to evaluate stem cell from human deciduous teeth (SHED) viability after exposure to different bioceramic materials. Material and Methods: Discs were constructed to obtain the material extracts according to the following groups: G1 - Bio-C Repair, G2 - MTA Repair HP, G3 - TheraCal LC, and G4 ­ Biodentine. Positive and negative control group were respectively maintained with αMEM + 10% FBS and αMEM + 1% FBS. SHED obtained through primary culture were in contact with material extracts for 24, 48, and 72h. MTT assay evaluated cell viability. Groups were plated in triplicate and the cell viability assay were repeated three times. Data were analyzed by two-way ANOVA followed by Tukey test (p<0.05). Results: The treatment and period comparisons showed statistically significant differences (p<0.000). G2 (MTA Repair HP) had greater cell viability values than the other experimental groups and negative control. MTA Repair HP and the control groups exhibited a similar behavior with cell viability values decreasing from 24h to 48h and increasing from 48h to 72h. Bio-C Repair, Biodentine, and Theracal LC did not show statistically significant differences among periods. Conclusions: SHED increased viability values after contact with MTA Repair HP in comparison with other bioceramic materials.(AU)


Objetivo: O objetivo desse estudo foi avaliar a viabilidade de células-tronco de dentes decíduos humanos (SHED) após o contato com diferentes materiais biocerâmicos. Material e Métodos: Foram confeccionados discos para obtenção dos extratos dos materiais de acordo com os seguintes grupos: G1 - Bio-C Repair, G2 - MTA Repair HP, G3 - TheraCal LC e G4 - Biodentine. Grupo de controle positivo e negativo foram mantidos respectivamente com αMEM + 10% FBS e αMEM + 1% FBS. SHED obtidas por cultura primária entraram em contato com os extratos de materiais por 24, 48 e 72h. O ensaio MTT avaliou a viabilidade celular. Os grupos foram semeados em triplicata e o ensaio de viabilidade celular foi repetido três vezes. Os dados foram analisados por ANOVA a dois critérios seguido pelo teste de Tukey (p<0,05). Resultados: As comparações de tratamentos e períodos mostraram diferenças estatisticamente significativas (p<0,000). O G2 (MTA Repair HP) apresentou maiores valores de viabilidade celular que os demais grupos experimentais e controle negativo. O MTA Repair HP e os grupos controle exibiram um comportamento semelhante com os valores de viabilidade celular diminuindo de 24h para 48h e aumentando de 48h para 72h. Bio-C Repair, Biodentine e Theracal LC não apresentaram diferenças estatisticamente significativas entre os períodos. Conclusões: SHED aumentou os valores de viabilidade após o contato com o MTA Repair HP em comparação com outros materiais biocerâmicos (AU)


Asunto(s)
Células Madre , Diente Primario , Ensayo de Materiales , Supervivencia Celular
20.
Epidemiol Serv Saude ; 32(4): e2023114, 2023.
Artículo en Inglés, Portugués | MEDLINE | ID: mdl-38055424

RESUMEN

OBJECTIVE: To analyze association of visual, hearing, mental/intellectual, physical and multiple impairments with health conditions and health risk behaviors in Brazil. METHODS: This was a cross-sectional study, using data from the 2019 National Health Survey; associations between impairments and presence of cardiovascular disease (CVD), hypertension, diabetes mellitus (DM), high cholesterol, alcohol abuse and smoking were estimated using logistic regression, thus obtaining the odds ratios (OR). RESULTS: Impairment was reported by 7.6% of the 90,846 participants. Having a impairment was associated with greater odds of reporting chronic conditions, especially CVD (OR = 2.11; 95%CI 1.76;2.54) and DM (OR = 1.78; 95%CI 1.56;2.02 ); visual impairment was associated with greater odds of smoking (OR = 1.52; 95%CI 1.28;1.81); mental/intellectual impairment was inversely related to smoking (OR = 0.45; 95%CI 0.30;0.67) and alcohol abuse (OR = 0.13; 95%CI 0.06;0.26). CONCLUSION: Having any of the impairments studied may be associated with greater odds of having chronic health conditions. MAIN RESULTS: Positive association was identified between having one or more impairments, and health conditions and health risk behaviors. The higher the prevalence of mental/intellectual, physical and multiple impairments, the lower alcohol abuse and smoking. IMPLICATIONS FOR SERVICES: As this population is vulnerable to chronic health conditions, health services need strategies to reduce barriers to access, as well as health promotion actions, such as health education, adapted for people with impairments. PERSPECTIVES: Topics for future studies, examining the inverse relationship between impairments and alcohol abuse and smoking, in addition to acting on the causal chain, so as to prevent health conditions and health risk behaviors.


Asunto(s)
Alcoholismo , Enfermedades Cardiovasculares , Diabetes Mellitus , Humanos , Conductas de Riesgo para la Salud , Alcoholismo/epidemiología , Brasil/epidemiología , Estudios Transversales , Encuestas Epidemiológicas , Enfermedad Crónica , Diabetes Mellitus/epidemiología
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