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STATEMENT OF PROBLEM: How resin-based material and a light-activation protocol influence the mechanical properties of materials used to cement glass fiber post-and-cores in endodontically treated teeth is unclear. PURPOSE: The purpose of this in vitro study was to evaluate the influence of immediate or 5-minute delayed light activation on the mechanical properties of dual-polymerizing resin cements and dual-polymerizing resin-core materials compared with bulk-fill composite resins. MATERIAL AND METHODS: Nine resin-based materials were tested: 4 dual-polymerizing resin-core materials, (Allcem Core; FGM, LuxaCore Z; DMG, Rebilda DC; VOCO, and (Clearfil DC Core Plus; KURARAY), 3 dual-polymerizing resin cements, (RelyX Universal; 3M ESPE, RelyX U200; 3M ESPE, and Allcem Dual; FGM), and 2 bulk-fill composite resins, (Opus Bulk Fill APS; FGM, and Filtek One Bulk Fill; 3M ESPE). The dual-polymerizing materials were light activated using both protocols. The postgel shrinkage (Shr), flexural strength (FS), elastic modulus (E), Knoop hardness (KH), degree of conversion (DC), and depth of polymerization (DoP) were measured (n=10). The data for Shr, FS, E, and DoP were analyzed using 2-way ANOVA, and for KH and DC using 2-way repeated measurement ANOVA and the Tukey HSD test (α=.05). RESULTS: A 5-minute delay before light-activation significantly reduced Shr for all materials (P<.001). Increasing the depth significantly reduced the KH for all materials (P<.001). Bulk-fill composite resins and dual-polymerizing resin-core had higher KH values than dual-polymerizing resin cements (P<.001). CONCLUSIONS: Delayed 5-minute light-activation reduced postgel shrinkage and had no negative effect on mechanical properties. Dual-polymerizing resin-core materials exhibited higher KH values than dual-polymerizing resin cement and mechanical properties similar to those of bulk-fill composite resin.
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To evaluate the polymerization shrinkage stress and cuspal strain (CS) generated in an artificial (typodont) and in a natural tooth using different resin composites. Twenty artificial and 20 extracted natural molars were selected. Each tooth was prepared with a 4x4 mm MOD cavity. The natural and typodont teeth were divided into four experimental groups (n=10), according to the resin composite used: Filtek Z100 (3M Oral Care) and Beautifil II LS (Shofu Dental). The cavities were filled using two horizontal increments and the CS (µS) was measured by the strain gauge method. Samples were sectioned into stick-shaped specimens and the bond strength (BS) (MPa) was evaluated using a microtensile BS test. Shrinkage stress and CS were analyzed using 3D finite element analysis. No difference was found between the type of teeth for the CS as shown by the pooled averages: Natural tooth: 541.2 A; Typodont model: 591.4 A. Filtek Z100 CS values were higher than those obtained for Beautifil II LS, regardless of the type of teeth. No statistical difference was found for the BS data. Adhesive failures were more prevalent (79.9%). High shrinkage stress values were observed for Filtek Z100 resin, regardless of tooth type. The CS of typodont teeth showed a shrinkage stress effect, generated during restoration, equivalent to that of natural teeth.
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Resinas Compuestas , Análisis del Estrés Dental , Análisis de Elementos Finitos , Ensayo de Materiales , Polimerizacion , Estrés Mecánico , Resistencia a la Tracción , Resinas Compuestas/química , Humanos , Valores de Referencia , Propiedades de Superficie , Reproducibilidad de los Resultados , Recubrimiento Dental Adhesivo/métodos , Corona del DienteRESUMEN
Cannabis has been used in rheumatic diseases as therapy for chronic pain or inflammatory conditions. Herein, the authors systematically review the rheumatological diseases in which cannabis has been studied: systemic sclerosis, fibromyalgia, osteoarthritis, rheumatoid arthritis, osteoporosis, polymyalgia rheumatica, gout, dermatomyositis, and psoriatic arthritis. We systematically searched PubMed for articles on cannabis and rheumatic diseases between 1966 and March 2023. Twenty-eight articles have been selected for review. Most of them (n=13) were on fibromyalgia and all of them but one showed important reduction in pain; sleep and mood also improved. On rheumatoid arthritis, two papers displayed decrease in pain and in one of them a reduction in inflammatory parameters was found. In scleroderma there was a case description with good results, one study on local use for digital ulcers also with good outcomes and a third one, that disclosed good results for skin fibrosis. In dermatomyositis a single study showed improvement of skin manifestations and in osteoarthritis (3 studies) this drug has demonstrated a good analgesic effect. Several surveys (n=5) on the general use of cannabis showed that rheumatological patients (mixed diseases) do use this drug even without medical supervision. The reported side effects were mild. In conclusion, cannabis treatment is an interesting option for the treatment of rheumatological diseases that should be further explored with more studies.
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The present study aimed to evaluate the protective potential of carvacrol against depressive-like behavior and cognitive impairment prompted by chronic unpredictable mild stress (CUMS) in mice. The animals were divided into six groups: Control (non-stressed), CARV (carvacrol at 50â¯mg/kg, p.o.), FLU (fluoxetine at 10â¯mg/kg, p.o.), CUMS (stressed), CUMS + CARV and CUMS + FLU, and the groups with CUMS were subjected to different stressors for 28 days. After treatment, mice underwent behavioral testing (open field, forced swimming, sucrose preference, social interaction, novel object recognition and Y-maze) and brain areas were removed for oxidative stress (MDA, nitrite/nitrate and GSH levels) and cytokine (IL-1ß and TNF-α) content assays. The results revealed that CARV administration reversed depressive-like behavior and significantly ameliorated the cognitive deficit induced by CUMS, as well as was able to attenuate oxidative stress (decreased MDA and nitrite/nitrate levels and increased GSH levels). In addition, a significant reduction in hippocampal IL-1ß and TNF-α levels was observed, demonstrating a potential anti-neuroinflammatory activity. Taken together, the antioxidant and anti-inflammatory activities observed in this study indicate that CARV is a promising drug for antidepressant treatment.
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Conducta Animal , Disfunción Cognitiva , Cimenos , Depresión , Modelos Animales de Enfermedad , Enfermedades Neuroinflamatorias , Estrés Oxidativo , Estrés Psicológico , Animales , Estrés Oxidativo/efectos de los fármacos , Ratones , Disfunción Cognitiva/tratamiento farmacológico , Disfunción Cognitiva/etiología , Disfunción Cognitiva/metabolismo , Depresión/tratamiento farmacológico , Depresión/metabolismo , Depresión/etiología , Masculino , Estrés Psicológico/tratamiento farmacológico , Estrés Psicológico/complicaciones , Estrés Psicológico/metabolismo , Cimenos/farmacología , Cimenos/administración & dosificación , Conducta Animal/efectos de los fármacos , Enfermedades Neuroinflamatorias/tratamiento farmacológico , Enfermedades Neuroinflamatorias/metabolismo , Antidepresivos/farmacología , Antidepresivos/administración & dosificación , Antioxidantes/farmacología , Fluoxetina/farmacología , Fluoxetina/administración & dosificación , Hipocampo/efectos de los fármacos , Hipocampo/metabolismo , Interleucina-1beta/metabolismoRESUMEN
Turner syndrome (TS) is caused by a complete or partial absence of an X or Y chromosome, including chromosomal mosaicism, affecting 1 in 2500 female live births. Sister chromatid exchange (SCE) is used as a sensitive indicator of spontaneous chromosome instability. Cells from mosaic patients constitute useful material for SCE evaluations as they grow under the influence of the same genetic background and endogenous and exogenous factors. We evaluated the proliferation dynamics and SCE frequencies of 45,X and 46,XN cells of 17 mosaic TS patients. In two participants, the 45,X cells exhibited a proliferative disadvantage in relation to 46,XN cells after 72 h of cultivation. The analysis of the mean proliferation index (PI) showed a trend for a significant difference between the 45,X and 46,X+der(X)/der(Y) cell lineages; however, there were no intra-individual differences. On the other hand, mean SCE frequencies showed that 46,X+der(X) had the highest mean value and 46,XX the lowest, with 45,X occupying an intermediate position among the lineages found in at least three participants; moreover, there were intra-individual differences in five patients. Although 46,X+der(X)/der(Y) cell lineages, found in more than 70% of participants, were the most unstable, they had a slightly higher mean PI than the 45,X cell lineages in younger (≤17 years) mosaic TS participants. This suggests that cells with a karyotype distinct from 45,X may increase with time in mosaic TS children and adolescents.
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PURPOSE: This systematic review with meta-analysis aims to analyze the effects of different types of exercise on cognition, neuroprotective and neuroinflammatory blood markers in older adults with mild cognitive impairment (MCI). METHODS: Relevant studies were identified using PubMED, SPORTDiscuss, Web of Science, Scopus, and PsycInfo databases. Methodological quality assessment of the studies was done with modified Downs and Black checklist. Data obtained from the included studies was analyzed using Comprehensive Meta-Analysis 4.0 software and results were reported using the random effects method. RESULTS: A total of twenty-three studies were identified. The findings were summarized as change in cognitive function after the exercise interventions in general and after each type of exercise. On average, the exercise intervention revealed an effect size (ES): 1.165; 0.741 to 1.589 (95% Confidence Interval (CI); p < 0.001); aerobic exercise ES: 1.442; 0.624 to 2.260 (95 %CI); p = 0.001; Multimodal ES: 0,856; 0.366 to 1.346 (95 % CI); p = 0.001 and resistance exercise ES: 1.229; 0.339 to 2.120 (95 % CI); p = 0.007. In addition, we observed significant small ES: -0.475; -0.817 to -0.134 (95 %CI); p = 0.006, I2= 0 %; τ2 = 0 of exercise effects on Tumor Necrosis Factor-α (TNF-α) and non-significant large ES:0.952; -0.238 to 2.142 (95 %CI); p = 0.117 on Brain Derived Neurotrophic Factor (BDNF) in persons with MCI. CONCLUSION: The present study revealed the existence of a large positive effect of overall exercise intervention on cognitive function and a small effect on TNF-α in old people with MCI. Additionally, this study demonstrates that aerobic and resistance exercises had similar larger positive effects and were better than multimodal exercise on increasing cognition in older persons with MCI.
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Cognición , Disfunción Cognitiva , Terapia por Ejercicio , Anciano , Humanos , Cognición/fisiología , Disfunción Cognitiva/terapia , Ejercicio Físico/fisiología , Terapia por Ejercicio/métodos , Entrenamiento de Fuerza/métodosRESUMEN
ABSTRACT: Tumor-associated macrophages are targets of interest in triple-negative breast cancer (TNBC). The translocator protein 18 kDa (TSPO) is a sensitive marker for macrophages and holds potential relevance in TNBC stratification. This pilot prospective study (EITHICS, NCT04320030) aimed to assess the potential of TSPO PET/CT imaging using 18 F-DPA-714 in primary TNBC, compared with immunohistochemistry, autoradiography, and TSPO polymorphism. PATIENTS AND METHODS: Thirteen TNBC patients were included. They underwent TSPO genotyping (HAB, MAB, LAB), 18 F-FDG PET/CT, and breast MRI. Semiquantitative PET parameters were computed. VOIs were defined on the tumor lesion, healthy breast tissue, and pectoral muscle to obtain SUV, tumor-to-background ratio (TBR), and time-activity curves (TACs). Additionally, immunohistochemistry, 3 H-DPA-714, and 3 H-PK-11195 autoradiography were conducted. RESULTS: The majority of TNBC tumors (11/13, 84%) had a preponderance of M2-polarized macrophages with a median proportion of 82% (range, 44%-94%). 18 F-DPA-714 PET/CT clearly identified TNBC tumors with an excellent TBR. Three distinct patterns of 18 F-DPA-714 TACs were identified, categorized as "above muscular," "equal to muscular," and "below muscular" with reference to the muscular background. For the "above muscular" group (2 HAB and 2 MAB), "equal muscular" group (3 HAB, 3 MAB, and 1 LAB), and "below muscular" group (1 LAB and 1 MAB), tumor TACs showed a 18 F-DPA-714 accumulation slope of 1.35, 0.62, and 0.22, respectively, and a median SUV mean of 4.02 (2.09-5.31), 1.66 (0.93-3.07), and 0.61 (0.43-1.02). CONCLUSIONS: This study successfully demonstrated TNBC tumor targeting by 18 F-DPA-714 with an excellent TBR, allowing to stratify 3 patterns of uptake potentially influenced by the TSPO polymorphism status. Further studies in larger populations should be performed to evaluate the prognostic value of this new biomarker.
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Estudios de Factibilidad , Tomografía Computarizada por Tomografía de Emisión de Positrones , Pirazoles , Pirimidinas , Neoplasias de la Mama Triple Negativas , Humanos , Neoplasias de la Mama Triple Negativas/diagnóstico por imagen , Proyectos Piloto , Persona de Mediana Edad , Femenino , Adulto , Macrófagos/metabolismo , Anciano , Receptores de GABA/metabolismoRESUMEN
Omarigliptin (OMG) is an antidiabetic drug indicated for the treatment of type 2 diabetes mellitus. Forced degradation studies are practical experiments to evaluate the stability of drugs and to establish degradation profiles. Herein, we present the investigation of the degradation products (DPs) of OMG formed under various stress conditions. OMG was subjected to hydrolytic (alkaline and acidic), oxidative, thermal, and photolytic forced degradation. A stability-indicating ultra-fast liquid chromatography method was applied to separate and quantify OMG and its DPs. Five DPs were adequately separated and detected in less than 6 min, while other published methods detected four DPs. MS was applied to identify and obtain information on the structural elucidation of the DPs. Three m/z DPs confirmed previously published research, and two novel DPs were described in this paper. The toxicity of OMG and its DPs were investigated for the first time using in vitro cytotoxicity assays, and the sample under oxidative conditions presented significant cytotoxicity. Based on the results from forced degradation studies, OMG was found to be labile to hydrolysis, oxidation, photolytic, and thermal stress conditions. The results of this study contribute to the quality control and stability profile of OMG.
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Estabilidad de Medicamentos , Compuestos Heterocíclicos con 2 Anillos , Piranos , Cromatografía Líquida de Alta Presión/métodos , Piranos/química , Piranos/análisis , Piranos/toxicidad , Compuestos Heterocíclicos con 2 Anillos/química , Compuestos Heterocíclicos con 2 Anillos/análisis , Compuestos Heterocíclicos con 2 Anillos/toxicidad , Espectrometría de Masas/métodos , Humanos , Supervivencia Celular/efectos de los fármacos , Reproducibilidad de los Resultados , Hipoglucemiantes/química , Hipoglucemiantes/análisis , Oxidación-Reducción , Modelos LinealesRESUMEN
Purpose: To identify progression of nonproliferative diabetic retinopathy (NPDR) in patients with type 2 diabetes by combining optical coherence tomography angiography (OCTA) metrics and color fundus photography (CFP) images. Methods: This study was a post hoc analysis of a prospective longitudinal cohort study (CORDIS, NCT03696810) with 2-year duration. This study enrolled 122 eyes. Ophthalmological examinations included OCTA and CFP. OCTA metrics included skeletonized vessel density (SVD) and perfusion density (PD) at the superficial capillary plexus (SCP) and deep capillary plexus (DCP). Microaneurysm turnover analysis and Early Treatment Diabetic Retinopathy Study (ETDRS) grading for diabetic retinopathy (DR) severity assessment were performed on 7-field CFP. Results: Eyes graded as ETDRS level 20 showed significant capillary nonperfusion predominantly in the inner ring area in the SCP (P < 0.001), whereas eyes graded as ETDRS level 35 and ETDRS levels 43 and 47 showed significant capillary nonperfusion in both the SCP and DCP in both inner and outer rings (P < 0.001). When evaluating rates of progression in capillary nonperfusion for the 2-year period of follow-up, changes were found predominantly in the DCP for SVD and PD and were better identified in the outer ring area. Microaneurysm turnover contributes to the characterization of NPDR progression by discriminating ETDRS level 35 from ETDRS levels 43 and 47 (P < 0.001), which could not be achieved using only OCTA metrics. Conclusions: Patterns of progression of NPDR can be identified combining OCTA examinations of the superficial and deep retinal capillary plexi of central retina and determination of microaneurysm turnover from fundus photographs. Translational Relevance: Our study reports results from a registered clinical trial that advances understanding of disease progression in NPDR.
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Retinopatía Diabética , Progresión de la Enfermedad , Angiografía con Fluoresceína , Vasos Retinianos , Tomografía de Coherencia Óptica , Humanos , Retinopatía Diabética/diagnóstico por imagen , Retinopatía Diabética/patología , Masculino , Femenino , Persona de Mediana Edad , Tomografía de Coherencia Óptica/métodos , Estudios Prospectivos , Vasos Retinianos/diagnóstico por imagen , Vasos Retinianos/patología , Anciano , Angiografía con Fluoresceína/métodos , Diabetes Mellitus Tipo 2/complicaciones , Diabetes Mellitus Tipo 2/patología , FotograbarRESUMEN
OBJECTIVE: It is known that exposure to air pollution is associated with an increased risk for cardiovascular and respiratory diseases. This review aimed to summarise observational studies on the impact of short and long-term exposure to ambient air pollution on prevalence of hospitalisations and/or emergency department visits caused by respiratory diseases in children and adolescents. SOURCES: Pubmed, Scopus, Embase and Cochrane Library databases were searched for the years 2018 to December 2022, including studies in any language. SUMMARY OF THE FINDINGS: A total of 15 studies published between 2018 and 15 January 2022 were included in this review. PM2.5 was the most type of particulate matter studied. Short-term exposure to PM2,5, PM10, NO2, SO2 and O3, even at concentrations less than the current health-based guidelines, was significantly correlated with increased risk of outpatient/hospital visits and hospitalisations for respiratory diseases by children. CONCLUSIONS: Our findings emphasise the importance and urgency of long-term control of air pollution and pollution-related diseases, especially among children and adolescents. There is a need for further research employing more homogeneous methodologies for assessing exposure and outcome measurements, in order to enable systematic reviews with meta-analysis.
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Hydrogels based on natural polysaccharides have demonstrated efficacy in epithelial recovery from cutaneous burn wounds. Here, we prepared a double-network hydrogel consisting of galactomannan (from Cassia grandis seeds) and κ-carrageenan (commercially sourced), cross-linked with CaCl2, as a matrix for immobilizing lactoferrin and/or Cramoll, aiming at its applicability as dressings for second-degree burn wounds. The formulations obtained [H - hydrogel, HL - hydrogel + lactoferrin, HC - hydrogel + Cramoll and HLC - hydrogel + lactoferrin + Cramoll] were analyzed rheologically as well as in terms of their stability (pH, color, microbial contamination) for 90 days. The burn was created with an aluminum bar (97 ± 3 °C) in the dorsal region of Wistar rats and subsequently treated with hydrogels (H, HL, HC, HLC) and control saline solution (S). The burn was monitored for 3, 7 and 14 days to evaluate the efficacy of the hydrogels in promoting wound healing. The hydrogels did not reveal significant pH or microbiological changes; there was an increase in brightness and a reduction in opacity for H. The rheological analysis confirmed the gel-like viscoelastic signature of the systems without substantial modification of the basic rheological characteristics, however HLC proved to be more rigid, due to rheological synergy when combining protein biomolecules. Macroscopic analyses confirmed centripetal healing with wound contraction: S < H < HC < HL < HLC. Histopathological analyses showed that hydrogel-treated groups reduced inflammation, tissue necrosis and fibrosis, while promoting re-epithelialization with focal acanthosis, especially in HLC due to a positive synergistic effect, indicating its potential as a promising therapy in the repair of burns.
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Quemaduras , Carragenina , Galactosa , Hidrogeles , Mananos , Ratas Wistar , Cicatrización de Heridas , Hidrogeles/química , Mananos/química , Mananos/farmacología , Animales , Quemaduras/terapia , Quemaduras/tratamiento farmacológico , Carragenina/química , Cicatrización de Heridas/efectos de los fármacos , Ratas , Galactosa/análogos & derivados , Galactosa/química , Masculino , Lactoferrina/química , ReologíaRESUMEN
Glioblastoma (GBM) is the most lethal and common malignant primary brain tumor in adults. An important feature that supports GBM aggressiveness is the unique composition of its extracellular matrix (ECM). Particularly, fibronectin plays an important role in cancer cell adhesion, differentiation, proliferation, and chemoresistance. Thus, herein, a hydrogel with mechanical properties compatible with the brain and the ability to disrupt the dynamic and reciprocal interaction between fibronectin and tumor cells was produced. High-molecular-weight hyaluronic acid (HMW-HA) functionalized with the inhibitory fibronectin peptide Arg-Gly-Asp-Ser (RGDS) was used to produce the polymeric matrix. Liposomes encapsulating doxorubicin (DOX) were also included in the hydrogel to kill GBM cells. The resulting hydrogel containing liposomes with therapeutic DOX concentrations presented rheological properties like a healthy brain. In vitro assays demonstrated that unmodified HMW-HA hydrogels only caused GBM cell killing after DOX incorporation. Conversely, RGDS-functionalized hydrogels displayed per se cytotoxicity. As GBM cells produce several proteolytic enzymes capable of disrupting the peptide-HA bond, we selected MMP-2 to illustrate this phenomenon. Therefore, RGDS internalization can induce GBM cell apoptosis. Importantly, RGDS-functionalized hydrogel incorporating DOX efficiently damaged GBM cells without affecting astrocyte viability, proving its safety. Overall, the results demonstrate the potential of the RGDS-functionalized hydrogel to develop safe and effective GBM treatments.
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Doxorrubicina , Fibronectinas , Glioblastoma , Ácido Hialurónico , Hidrogeles , Oligopéptidos , Glioblastoma/tratamiento farmacológico , Glioblastoma/metabolismo , Glioblastoma/patología , Humanos , Doxorrubicina/farmacología , Doxorrubicina/química , Oligopéptidos/química , Oligopéptidos/farmacología , Fibronectinas/metabolismo , Fibronectinas/antagonistas & inhibidores , Hidrogeles/química , Línea Celular Tumoral , Ácido Hialurónico/química , Neoplasias Encefálicas/tratamiento farmacológico , Neoplasias Encefálicas/metabolismo , Neoplasias Encefálicas/patología , Liposomas/química , Apoptosis/efectos de los fármacos , Metaloproteinasa 2 de la Matriz/metabolismoRESUMEN
In contrast to traditional beach profiling methods like topographic surveys and GNSS, which pose significant challenges in terms of cost and time, this research underscores the efficiency, cost-effectiveness, and simplicity of terrestrial photogrammetry employing the Structure from Motion-Multi View Stereo (SfM-MVS) method. Notably, this approach enables the utilization of commonplace devices such as smartphones for data capture. The methodology integrates a 12-megapixel camera for image acquisition, processed through Agisoft Metashape Professional software, and validated for accuracy using ground control points (GCPs) and checkpoints (CKPs) calibrated via GNSS. Findings reveal substantial disparities in positional accuracy according to the Ground Control Points distribution. The study underscores the critical role of strategically distributing GCPs and CKPs in effectively mapping coastal areas, thus affirming the potential of SfM-MVS as a powerful and accessible tool for coastal monitoring initiatives. This research contributes significantly to advancing the efficiency and accessibility of beach profile monitoring, offering invaluable insights for researchers and practitioners in coastal management and environmental conservation efforts.â¢A simplified beach profile modeling methodology is proposed.â¢The method is faster and more cost-effective than traditional surveys (RTK GNSS, lidar, RPA).â¢The study highlights the importance of GCP and CKP distribution in enhancing SfM-MVS accuracy for coastal mapping.
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To investigate de effect of PAb gel on the bone tissue of rats submitted to Bisphosphonate-related osteonecrosis of the jaws (BRONJ). Initially, 54 animals were submitted to BRONJ model by Zoledronic Acid (ZA) (0.1 mg/kg 3x/wk for 9 wk, ip), followed by the 1st upper left molar extraction at the 8th wk. After tooth removal, the animals were divided into 3 groups, ZA that received placebo gel or PAb gel that received 1% PAb gel, inside the dental alveolus. The control Group (CONTROL) received 0.1 mg/kg of 0.9% saline and then placebo gel. Three weeks after tooth extraction, the animals were euthanized, and maxillae were colleted for macroscopic, radiographic, histological and Raman spectomery assays. Additionally, GSK3b, beta-catenin, and Runx2 mRNA expressions were determined. Blood samples were collected for the analysis of Bone-specific alkaline phosphatase (BALP) levels. PAb gel improved mucosal healing, increased the number of viable osteocytes, while it reduced the number of empty lacunae, as well as the amount of bone sequestration. Furthermore, PAb gel positively influenced the number and functionality of osteoblasts by stimulating Wnt signaling, thereby inducing bone remodeling. Additionally, PAb gel contributed to improved bone quality, as evidenced by an increase in bone mineral content, a decrease in bone solubility, and an enhancement in the quality of collagen, particularly type I collagen. PAb gel mitigated bone necrosis by stimulating of bone remodeling through Wnt signaling and concurrently improved bone quality. PAb gel emerges as a promising pharmacological tool for aiding in BRONJ therapy or potentially preventing the development of BRONJ.
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Agaricus , Osteonecrosis de los Maxilares Asociada a Difosfonatos , Conservadores de la Densidad Ósea , Animales , Ratas , Osteonecrosis de los Maxilares Asociada a Difosfonatos/tratamiento farmacológico , Osteonecrosis de los Maxilares Asociada a Difosfonatos/etiología , Osteonecrosis de los Maxilares Asociada a Difosfonatos/patología , Difosfonatos , Maxilar/patología , Extracción Dental , Vía de Señalización Wnt , Ácido ZoledrónicoRESUMEN
PURPOSE: To characterize the occurrence of diabetic macular edema and the presence of abnormal retinal fluid accumulation in nonproliferative diabetic retinopathy (NPDR). METHODS: In this two-year prospective study, a total of 122 eyes with diabetes type 2 underwent optical coherence tomography (OCT) and OCT-Angiography in association with OCT-Fluid imaging, a novel algorithm of OCT analysis allowing quantification of abnormal accumulation of fluid in the retina through low optical reflectivity ratios (LOR). Early Treatment Diabetic Retinopathy Study (ETDRS) grading for diabetic retinopathy (DR) severity assessment was performed using 7-field color fundus photography. Best corrected visual acuity was also recorded. RESULTS: During the 2-year follow-up, 23 eyes (19%) developed central-involved diabetic macular edema (CI-DME) and 2 eyes (2%) developed clinically significant macular edema (CSME). In the two-year period of the study, eyes that developed CI-DME showed a progressive increase in central retinal thickness (CRT) (ß = 7.7 ± 2.1â µm/year, p < 0.001) and in LOR values (ß = 0.009 ± 0.004 ratio/year, p = 0.027). The increase in CRT and abnormal retinal fluid, represented by increased LOR ratios, are associated with increased retinal perfusion in the deep capillary plexus (DCP) (skeletonized vessel density, p = 0.039). In contrast, the eyes with CSME showed decreased retinal perfusion and abnormal fluid located in the outer layers of the retina. CONCLUSIONS: CI-DME and CSME appear to represent different entities. Eyes with CI-DME show increases in abnormal retinal fluid associated with increased retinal vascular perfusion in the DCP. Eyes with CSME are apparently associated with decreased retinal vascular perfusion in the DCP and abnormal fluid in the outer retina.
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Investigar a presença da educação interprofissional nos cursos da área de saúde de um campus da Universidade do Estado de Minas Gerais (UEMG). Metodologia: estudo a abordagem quantitativa, descritiva e exploratória que analisou os projetos pedagógicos e aplicação de questionários. Resultados: a maioria dos participantes reconheceu a importância da interprofissionalidade, mas identificou desafios na comunicação e hierarquia entre profissões, além disso o estudo destaca a necessidade de melhor implementação da educação interprofissional na formação de saúde no Brasil. Considerações finais: A interprofissionalidade é crucial na formação de profissionais de saúde, mas ainda não está amplamente integrada nos currículos acadêmicos, requerendo mais estudos para sua inclusão efetiva.(AU)
To investigate the presence of interprofessional education in health courses at a campus of the State University of Minas Gerais (UEMG). Methodology: a quantitative, descriptive and exploratory study that analyzed pedagogical projects and questionnaires. Results: The majority of participants recognized the importance of interprofessionality, but recoganize the challenges in communication and hierarchy between professions. In addition, the study highlights the need for better implementation of interprofessional education in health training in Brazil. Final considerations: Interprofessionality is crucial in the training of health professionals, but it is not yet widely integrated into academic curricula, requiring further studies for its effective inclusion.(AU)
Investigar la presencia de la educación interprofesional en los cursos de salud en un campus de la Universidad Estatal de Minas Gerais (UEMG). Metodología: estudio cuantitativo, descriptivo y exploratorio que analizó proyectos pedagógicos y cuestionarios. Resultados: la mayoría de los participantes reconoció la importancia de la interprofesionalidad, pero identificó desafíos en la comunicación y la jerarquía entre las profesiones. Además, el estudio destaca la necesidad de una mejor implementación de la educación interprofesional en la formación sanitaria en Brasil. Consideraciones finales: La interprofesionalidad es crucial en la formación de los profesionales de la salud, pero aún no está ampliamente integrada en los currículos académicos, por lo que se requieren más estudios para su inclusión efectiva.(AU)
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Enseñanza , Personal de Salud , Educación InterprofesionalRESUMEN
Previous studies have investigated the effects of different combined training programs involving traditional resistance training and aerobic exercise on hemodynamic parameters and arterial stiffness in older adults. However, little is known about the impact of power training combined with endurance training on these variables in hypertensive older adults. Therefore, this study aimed to investigate the effects of dynamic power training with elastic bands combined with endurance training on arterial stiffness and hemodynamic parameters in hypertensive older adults. Twenty-six participants were randomly assigned to the control group (CG; nâ=â13) and the intervention group (nâ=â13). IG participants performed power training with elastic bands combined with endurance training twice a week for 8âweeks. Pulse pressure, central pulse pressure, pulse wave velocity, SBP, DBP, central SBP, and central DBP were assessed before and after 8âweeks using the triple pulse wave velocity method. Pulse pressure, central pulse pressure, pulse wave velocity, SBP, DBP, central SBP, and central DBP significantly improved after 8âweeks of intervention (Pâ<â0.05). These findings indicate that power training with elastic bands combined with endurance training reduces arterial stiffness and significantly improves hemodynamic parameters in older adults diagnosed with grade 1 hypertension. In addition, underscores the potential of this approach as a promising strategy for the management of hypertension in older adults.
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Entrenamiento Aeróbico , Hipertensión , Entrenamiento de Fuerza , Humanos , Anciano , Análisis de la Onda del Pulso , Hipertensión/terapia , Presión SanguíneaRESUMEN
Background and Objectives: Invasive fungal infections are associated with high morbidity and mortality in patients admitted to hospital, including those receiving appropriate therapy. The aim of this study was to evaluate the use of prophylactic and preemptive antifungal therapy; clinical and epidemiological features; and mortality of patients admitted to an infectious disease ward of a public high complexity hospital in Uberlandia, Minas Gerais, Brazil. Methods: This is a retrospective study carried out in the infectious diseases ward of a public university hospital in Brazil. Data from patients hospitalized in 2019 and 2020 who received azole antifungals (fluconazole, itraconazole, or voriconazole), echinocandin (anidulafungin), and polyene (amphotericin B) were collected from medical records. Results: During the study period, 111 patients received one or more antifungal agent. The length of hospital stays of patients (29.35 days; p=0.0252), mean number of days of antibacterial drug use (23.5 days; p=0.0164), a diagnosis of AIDS (p=0.0397), mechanical ventilation (MV) (p<0.001), and presence of a nasoenteral tube (p<0.01) were variables that were associated with death. Fungal infection was confirmed in 79 (71.2%) patients who used antifungal drugs. The most frequent fungi isolated were Candida spp. (36; 32.4%) and Cryptococcus spp. (22; 19.8%), and there was an association between infection with these fungi and mortality (p<0.05; OR: 7.61 and 5.53, respectively). Regarding antifungal therapy indication, 56 (50.4%) patients received it as empirical therapy, 33 (29.7%) as targeted therapy, and 22 (19.8%) as preemptive therapy. Conclusion: The factors that contributed to mortality of the patients were longer hospital stays, AIDS, antibacterial medication use, mechanical ventilation, and presence of a nasoenteral tube. The type of antifungal therapy used did not influence the mortality in these patients.(AU)
Justificativa e Objetivos: As infecções fúngicas invasivas apresentam alta morbimortalidade para pacientes hospitalizados, inclusive para aqueles em uso de terapia apropriada. O objetivo foi avaliar a terapia antifúngica profilática e preemptiva, as características clínicas e epidemiológicas, e a mortalidade de pacientes internados em uma enfermaria de doenças infecciosas de um hospital público de alta complexidade de Uberlândia, Minas Gerais, Brasil. Métodos: Trata-se de estudo retrospectivo realizado em uma enfermaria de doenças infecciosas. Os dados coletados dos prontuários foram referentes aos pacientes internados nos anos de 2019 e 2020 e que fizeram uso de antifúngicos azólicos (fluconazol, itraconazol ou voriconazol), equinocandinas (anidulafungina) e poliênicos (anfotericina B). Resultados: Durante o período, 111 pacientes usaram um ou mais antifúngicos. O tempo de internação (29,35 dias, p= 0,0252), média de dias de uso de antibacterianos (23,5 dias; p=0,0164), aids (p=0,0397), uso de ventilação mecânica (VM; p <0,001) e uso de sonda nasoenteral (p<0,01) foram variáveis que se relacionaram com desfecho morte. A infecção por fungos foi confirmada em cultura para 79 (71,2%) pacientes em terapia antifúngica. Os fungos mais frequentes foram Candida spp. (36; 32,4%) e Cryptococcus spp. (22; 19,8%), mostrando relação da infecção por esses fungos com a mortalidade (p<0,05; OR: 7,61 e 5,53, respectivamente). Quanto à terapia, 56 (50,4%) pacientes estavam em terapia empírica; 33 (29,7%) usaram como terapia alvo; e 22 (19,8%) usavam como terapia preemptiva. Conclusão: A mortalidade foi mais frequente entre os pacientes com maior tempo de hospitalização, que tinham aids e que fizeram uso de antibióticos, de ventilação mecânica e de sonda nasoenteral em algum momento da internação. O tipo de terapia antifúngica não influenciou a mortalidade desses pacientes.(AU)
Justificación y Objetivos: Las infecciones fúngicas invasivas presentan una alta morbilidad y mortalidad en los pacientes hospitalizados, incluidos aquellos que utilizan la terapia adecuada. El objetivo fue evaluar la terapia antimicótica profiláctica y preventiva, las características clínicas, epidemiológicas y la mortalidad de pacientes ingresados en una sala de enfermedades infecciosas de un hospital público de alta complejidad en Uberlândia, Minas Gerais, Brasil. Métodos: Este es un estudio retrospectivo realizado en la sala de enfermedades infecciosas de un hospital universitario público en Brasil. Los datos recogidos de las historias clínicas se referían a pacientes hospitalizados en 2019 y 2020 y que utilizaban antifúngicos azoles (fluconazol, itraconazol o voriconazol), equinocandinas (anidulafungina) y polienos (anfotericina B). Resultados: Durante el período, 111 pacientes usaron uno o más antifúngicos. El tiempo de estancia hospitalaria (29,35 días, p= 0,0252), promedio de días de uso de antibacteriano (23,5 días; p=0,0164), SIDA (p=0,0397), uso de ventilación mecánica (VM; p<0,001) y uso de sonda nasoenteral (p<0,01) fueron variables que se relacionaron con el desenlace de muerte. La infección por hongos se confirmó en cultivo en 79 (71,2%) pacientes que usaban medicamentos antimicóticos. Los agentes fúngicos más frecuentes fueron Candida spp. (36; 32,4%) y Cryptococcus spp. (22; 19,8%), mostrando relación entre la infección por estos hongos y la mortalidad (p<0,05; 7,61 y 5,53, respectivamente). En cuanto a la terapia, 56 (50,4%) pacientes estaban en terapia empírica; 33 (29,7%) la utilizaron como terapia diana; y 22 (19,8%) la utilizaron como terapia preventiva. Conclusión: La mortalidad fue más frecuente entre los pacientes con mayor tiempo de internación, que tenían SIDA y que utilizaron antibióticos, ventilación mecánica y sonda nasoenteral en algún momento de la internación. El tipo de terapia antifúngica no influyó en la mortalidad de estos pacientes.(AU)
Asunto(s)
Infecciones Fúngicas Invasoras/etiología , Infecciones Fúngicas Invasoras/mortalidad , Infecciones Fúngicas Invasoras/tratamiento farmacológico , Infecciones Fúngicas Invasoras/epidemiología , AntifúngicosRESUMEN
Hemodialysis catheters are frequently used for vascular access in end-stage chronic kidney disease patients lacking mature arteriovenous fistula. The incidence of infective endocarditis in hemodialysis patients is higher than in the general population and is associated with severe and potentially life-threatening complications. A high index of suspicion is imperative for early diagnosis and timely intervention to enhance the prognosis of this high-mortality condition. Imaging studies, like transthoracic and transesophageal echocardiography, are crucial for prompt diagnosis. We present a case of a 36-year-old woman undergoing hemodialysis, whose prolonged use of a permanent catheter led to the development of infective endocarditis complicated with septic pulmonary embolism. Our case report presents an example of right atrial endocarditis with a poor outcome due to delayed diagnosis.
RESUMEN
Cognitive deficits are already present before psychosis onset but are a key feature of first-episode psychosis (FEP). The objective of this study was to investigate the cognitive outcomes of a cohort of FEP patients who were diagnosed using the clinical staging approach and were followed for up to 21 years. We analyzed data from 173 participants with first-admission psychosis who were followed-up for a mean of 20.9 years. The clinical staging assessment was adapted from the clinical staging framework developed by McGorry et al.1 Cognitive assessment was performed using the MATRICS Consensus Cognitive Battery (MMCB) at the end of follow-up. FEP patients who were longitudinally diagnosed in the lowest clinical stages (stages 2A and 2B) showed better performance in attention, processing speed, and MCCB overall composite score than those in the highest clinical stages (stages 4A and 4B). There was a significant linear trend association between worsening of all MCCB cognitive functions and MCCB overall composite score and progression in clinical staging. Furthermore, the interval between two and five years of follow-up appears to be associated with deficits in processing speed as a cognitive marker. Our results support the validation of the clinical staging model over a long-term course of FEP based on neuropsychological performance. A decline in some cognitive functions, such as processing speed, may facilitate the transition of patients to an advanced stage during the critical period of first-episode psychosis.