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1.
J Ophthalmic Inflamm Infect ; 14(1): 27, 2024 Jun 12.
Artigo em Inglês | MEDLINE | ID: mdl-38867117

RESUMO

PURPOSE: To report a case of Purpureocillium lilacinum endophthalmitis. METHODS: The case of a fungal endophthalmitis caused by Purpureocillium lilacinum documented in an immunocompetent patient with no apparent trigger. RESULTS: A 64-year-old male with a two-month history of panuveitis in his left eye was referred to our hospital. Initially misdiagnosed as sympathetic ophthalmia due to a previous surgery on his right eye 4 months before the onset of the left ocular picture, the patient received corticosteroid treatment, leading to a rapid deterioration of the left eye condition. An urgent exploratory vitrectomy was performed to identify the underlying cause, revealing endophthalmitis. Microbiological investigation yielded Purpureocillium lilacinum as the causative agent. Despite intensive treatment, including intravitreal antibiotics and antifungals, along with another surgical intervention, clinical evolution remained unfavourable, ultimately leading to the evisceration of the affected eye. CONCLUSIONS: Purpureocillium lilacinum poses a rare yet sever threat as a causative agent of fungal endophthalmitis. Managing such cases is challenging due to the delayed identification, fungus's resistance to common antifungals, and its association with prior corticosteroid misuse in most patients. This case underscores the crucial importance of heightened clinical suspicion, early diagnosis, and the exploration of alternative treatment strategies in addressing Purpureocillium lilacinum endophthalmitis. The challenges posed by this rare fungal pathogen emphasize the need for a multidisciplinary approach and continued research to improve outcomes in these complex cases.

2.
Artigo em Inglês | MEDLINE | ID: mdl-38918898

RESUMO

Gaze direction and pupil dilation play a critical role in communication and social interaction due to their ability to redirect and capture our attention and relevance for emotional information. The present study aimed to explore whether the pupil size and the gaze direction of the speaker affect language comprehension. Participants listened to sentences that could be correct or contain a syntactic anomaly, while the static face of a speaker was manipulated in terms of gaze direction (direct, averted) and pupil size (mydriasis, miosis). Left anterior negativity (LAN) and P600 linguistic ERP components were observed to syntactic anomalies for all conditions. The speaker's gaze did not impact syntactic comprehension. However, the amplitude of the LAN component for mydriasis (dilated pupil) was larger than for miosis (constricted pupil) condition. Larger pupils are generally associated with care, trust, interest, and attention, which might facilitate syntactic processing at early automatic stages. The result also supports the permeable and context-dependent nature of syntax. Previous studies also support an automatic nature of syntax (fast and efficient), which combined with the permeability to relevant sources of communicative information, such as pupil size and emotions, is highly adaptive for language comprehension and social interaction.

3.
Angew Chem Int Ed Engl ; : e202407114, 2024 May 08.
Artigo em Inglês | MEDLINE | ID: mdl-38719740

RESUMO

Herein we report the first transition metal-catalyzed approach to the enantioenriched synthesis of cyclic sulfonimidamides relying on commercially available palladium catalysts and ligands. High-throughput experimentation (HTE) was employed to identify the optimal catalyst system and solvent.  The method is applied to a variety of saturated and unsaturated rings and exhibits the highest selectivity for 2-substituted allyl electrophiles. The products are further elaborated to complex, tricyclic scaffolds. DFT experiments presented herein highlight the key ligand substrate interactions leading to the high levels of enantioselectivity.

5.
J Adv Vet Anim Res ; 11(1): 132-138, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38680790

RESUMO

Objective: The objectives of this study were to determine the richness, abundance, and diversity of bacteria in stray dogs (Canis lupus familiaris) infested by ticks in Comarca Lagunera, northern Mexico, and to establish their pathogenic and or/zoonotic potential. Materials and Methods: Blood samples from 12 dogs were collected, and their deoxyribonucleic acid was extracted. The V3-V4 region of the 16S ribosomal ribunocleic acid gene was amplified by polymerase chain reaction. Next-generation sequencing (NGS) was performed on a MiSeq Illumina platform, and the data were analyzed using quantitative insights into microbial ecology. Results: The operational taxonomic units resulted in 23 phyla, 54 classes, 89 orders, 189 families, 586 genera, and 620 bacterial species; among them, 64 species and/or bacterial genera with pathogenic or zoonotic potential were identified, some of which have been reported in the literature as relevant to public health (Anaplasma phagocytophilum, Brucella spp., Clostridium spp., Corynebacterium affermentants, Cutibacterium spp., Dietzia spp., Ehrlichia canis, Fusobacterium necrophorum, Leptotrichia spp., Mycobacterium spp., Paracoccus spp., and Roseomonas gilardii). Conclusion: This research offers relevant information on the prevalence of tick-borne diseases as well as other potential zoonotic diseases in the blood of stray dogs parasitized by ticks in northern Mexico. New molecular biology and massive NGS techniques may play an important role in the study and documentation of bacterial profiles from animals in close proximity to humans.

6.
Sci Total Environ ; 927: 172230, 2024 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-38582111

RESUMO

The tourism industry, affected by COVID-19, must reduce greenhouse gas emissions. This study evaluated the environmental impact of three hotels in coastal and mountainous regions of Spain and Portugal using Life Cycle Assessment (LCA). Data was gathered via surveys in the Greentour tool. Results indicate that the 2-star hotel (focused on cultural-urban tourism) has the highest impacts in most categories, except for CC, FRD, and POF indicators. The 3-star hotel (beach tourism) contributes the most to CC and FRD indicators, while the hostel (nature-religious tourism) has the highest value in the POF indicator. LCA findings reveal that diesel consumption in the hostel and electricity usage in both the 2-star and 3-star hotels are major contributors to environmental impacts across various categories. Overall, evidence suggests that fossil fuel and electricity usage significantly affect tourism activities environmentally. Interestingly, this study highlights that a 2-star hotel can have a higher carbon footprint (CC indicator) compared to a 3-star hotel, challenging the notion that higher star ratings imply lower environmental impact.

7.
Mol Ecol ; 33(7): e17304, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38421113

RESUMO

Glacial cycles lead to periodic population interbreeding and isolation in warm-adapted species, which impact genetic structure and evolution. However, the effects of these processes on highly mobile and more cold-tolerant species are not well understood. This study aims to shed light on the phylogeographic history of Aglais urticae, a butterfly species with considerable dispersal ability, and a wide Palearctic distribution reaching the Arctic. Through the analysis of genomic data, four main genetic lineages are identified: European, Sierra Nevada, Sicily/Calabria/Peloponnese, and Eastern. The results indicate that the Sardo-Corsican endemic taxon ichnusa is a distinct species. The split between the relict lineages in southern Europe and the main European lineage is estimated to have happened 400-450 thousand years ago, with admixture observed during the Quaternary glacial cycles, and still ongoing, albeit to a much smaller extent. These results suggest that these lineages may be better treated as subspecific parapatric taxa. Ecological niche modelling supported the existence of both Mediterranean and extra-Mediterranean refugia during the glacial periods, with the main one located on the Atlantic coast. Nevertheless, gene flow between populations was possible, indicating that both differentiation and admixture have acted continuously across glacial cycles in this cold-tolerant butterfly, generally balancing each other but producing differentiated lineages in the southern peninsulas. We conclude that the population dynamics and the processes shaping the population genetic structure of cold-adapted species during the Quaternary ice ages may be different than those classically accepted for warm-adapted species.


Assuntos
Borboletas , Variação Genética , Animais , Filogenia , Variação Genética/genética , Borboletas/genética , Filogeografia , Europa (Continente)
8.
Ocul Immunol Inflamm ; : 1-10, 2024 Feb 21.
Artigo em Inglês | MEDLINE | ID: mdl-38381450

RESUMO

PURPOSE: Uveitis can lead to secondary glaucoma, a condition with challenging management that can carry irreversible visual loss. Filtering surgery has demonstrated a higher failure rate, increased incidence of postoperative complications and reinterventions in uveitic patients. There is no consensus on the optimal surgical approach for uveitic glaucoma (UG) due to limited data comparing various intraocular pressure (IOP)-lowering surgeries. This retrospective cohort aims to assess the clinical outcomes of trabeculectomy (TBT), non-penetrating deep sclerectomy (NPDS), Ex-PRESS shunt and Ahmed glaucoma valve, providing additional insights into the long-term IOP control and safety of filtering surgeries in UG. METHODS: The filtering surgery was performed on 32 eyes of 27 UG patients. Complete success was defined as IOP ≤ 18 mmHg or a 30% reduction. Qualified success allowed topical hypotensive treatment. RESULTS: Complete success was 40.63% (13/32) at 12 months and 36.67% (11/30) at 36 months. Qualified success was 84.38% (27/32) at 12 months and 63.33% (19/30) at 36 months. In the survival analysis, both NPDS and Ex-PRESS demonstrated decreased failure rates compared to TBT (NPDS vs TBT: HR = 0.20, p = 0.049; Ex-PRESS vs TBT: HR = 0.28, p = 0.13). One or more reinterventions were required in 34.38% (11/32) of the eyes. NPDS had the lowest incidence of hypotony. Secondary cataract was a common complication in all groups. CONCLUSION: Various filtering surgeries are safe and effective procedures for lowering IOP and reducing the requirement of topical antihypertensives in UG at 36 months. However, one-third of the patients will require another IOP-lowering procedure.

9.
J Geom Anal ; 34(2): 58, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38161409

RESUMO

We consider the problem of finding the best function φn:[0,1]→R such that for any pair of convex bodies K,L∈Rn the following Brunn-Minkowski type inequality holds |K+θL|1n≥φn(θ)(|K|1n+|L|1n),where K+θL is the θ-convolution body of K and L. We prove a sharp inclusion of the family of Ball's bodies of an α-concave function in its super-level sets in order to provide the best possible function in the range 34n≤θ≤1, characterizing the equality cases.

10.
Sci Total Environ ; 912: 168964, 2024 Feb 20.
Artigo em Inglês | MEDLINE | ID: mdl-38036139

RESUMO

The tourism sector after COVID-19 has raised different concerns that have lead to a development towards a more sustainable model of tourism. After the health crisis, the increase in environmental awareness of tourists has become evident. In this context, the great paradigm of 'small-scale' tourism has been developed as opposed to traditional tourism. The present work seeks to contribute to sustainable development in the Spanish tourism sector, comparing a hostel in Cantabria (considered as 'small scale' /religious tourism) and a hotel in Lloret de Mar (considered as a traditional tourism) one using the Life Cycle Assessment (LCA) methodology to verify advantages and disadvantages of both types of tourism. The functional unit (FU) used was 'per guest night with breakfast included'. The results have revealed similar results for both establishments in all impact categories, as can be seen in its contribution to Climate Change (4.41 kg CO2 eq./FU caused by the hotel and 4.78 kg CO2 eq./FU by the hostel). The electricity consumption and the impact of the breakfast in the hostel were identified as main contributors to environmental burdens (with 76.72 % of the hotel's impact to climate change and 77.36 % for the hostel); hence, improvement opportunities envisaged were focused on these critical points. On the one hand, a biomass boiler, a solar water-heating system and a hybrid solar/biomass heating are considered a more sustainable alternatives related to electricity. Natural gas and diesel Consumption, respectively. On the other hand, oatmeal, Greek yoghurt and berries are good options for a breakfast with a reduced environmental impact. It is also important to implement responsible and green practices in order to achieve more environmentally sustainable alternative and traditional accommodations. Therefore, it can be concluded by stating that LCA is a tool capable of identifying and studying the processes with the highest environmental impact in order to find out the most sustainable form of tourism.


Assuntos
COVID-19 , Turismo , Humanos , Dióxido de Carbono , Meio Ambiente , Desenvolvimento Sustentável
11.
Sportis (A Coruña) ; 10(1): 108-130, 2024. tab, ilus
Artigo em Espanhol | IBECS | ID: ibc-229138

RESUMO

El presente trabajo describe la percepción de una maestra-tutora sobre la Competencia Motriz y Relaciones Sociales en escolares de Educación Infantil. Este estudio tuvo un triple objetivo, por un lado, conocer si la maestra-tutora, participante, era capaz de identificar a los escolares con dificultades motrices y sociales. Por otro lado, analizar el impacto de un Programa de Refuerzo Motriz en la Competencia Motriz y en las Relaciones Sociales en estos escolares. Por último, conocer si la maestra-tutora percibe el efecto del programa. En el estudio participó la maestra-tutora y 6 escolares con dificultades motrices, con una edad media de 5.60 años (DT ± 0.53). Se diseñó un estudio pre-experimental mixto que combinó un enfoque cuantitativo para las medidas Pre-Test y Post-Test y un enfoque cualitativo para observar el comportamiento de los participantes. Se evaluó la Competencia Motriz de manera objetiva, mediante la Batería de evaluación (Mabc-2) y se realizó un Sociograma para conocer las Relaciones Sociales. Por otro lado, se pasó un cuestionario a la profesora tutora. Los resultados mostraron que la maestra-tutora, en líneas generales, detecta entre el alumnado a aquellos escolares que presentan dificultades motrices o/y sociales de manera muy evidente. Asimismo, los resultados muestran una mejora en los escolares en ambas variables. En conclusión, los docentes de Educación Infantil como uno de los principales agentes de socialización pueden llegar a ser un elemento fundamental para ayudar a que estos superen las dificultades motrices y sociales (AU)


This paper describes a teacher-tutor's perception of Motor Competence and Social Relationships in pre-school children. The aim of this study was threefold: on the one hand, to find out whether the participating teacher-tutor was able to identify schoolchildren with motor and social difficulties. On the other hand, to analyse the impact of a Motor Reinforcement Programme on Motor Competence and Social Relationships in these schoolchildren. Finally, to find out if the teacher-mentor perceives the effect of the programme. The study involved the teacher-tutor and 6 schoolchildren with motor difficulties, with a mean age of 5.60 years (SD ± 0.53). A mixed pre-experimental study was designed combining a quantitative approach for the Pre-Test and Post-Test measures and a qualitative approach to observe the behaviour of the participants. Motor competence was assessed objectively using the Motor Competence Assessment Battery (Mabc-2) (Henderson et al., 2007) and a Sociogram was conducted to assess Social Relationships. On the other hand, a questionnaire was given to the tutor-teacher. The results showed that the tutor-teacher, in general terms, detects among the students those who present motor and/or social difficulties in a very evident way. Likewise, the results show an improvement in the pupils in both variables.In conclusion, early childhood teachers, as one of the main agents of socialisation, can become a fundamental element in helping children to overcome motor and social difficulties (AU)


Assuntos
Humanos , Educação Física e Treinamento , Comportamento Social , Docentes , Destreza Motora , Escolas Maternais
12.
Orbit ; : 1-4, 2023 Aug 01.
Artigo em Inglês | MEDLINE | ID: mdl-37527158

RESUMO

Atypical fibroxanthoma (AFX) is a rare neoplasm, with a limited number of cases reported in the periocular region. In this case report, we detail a 63-year-old woman who presented with a polypoid, exophytic lesion on her right upper eyelid that had been progressing for a year. The lesion was meticulously excised with security margins and reconstructed using a glabellar flap. Following a thorough microscopic and immunohistochemical analysis, AFX was diagnosed. Despite its sometimes clinical and histological benign appearance, AFX is classified as a malignant neoplasm; however, it carries an excellent prognosis with low metastasis and recurrence rates. Complete excision with safety margins is essential and an adequate post-operative surveillance is recommended. Owing to its rarity, ophthalmologists should remain vigilant and include AFX in their differential diagnosis, as the tumor's benign appearance may lead to misdiagnosis of this malignant entity.

13.
Fetal Diagn Ther ; 50(6): 480-490, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37573787

RESUMO

INTRODUCTION: The aim of this study was to develop a pipeline using state-of-the-art deep learning methods to automatically delineate and measure several of the most important brain structures in fetal brain ultrasound (US) images. METHODS: The dataset was composed of 5,331 images of the fetal brain acquired during the routine mid-trimester US scan. Our proposed pipeline automatically performs the following three steps: brain plane classification (transventricular, transthalamic, or transcerebellar plane); brain structures delineation (9 different structures); and automatic measurement (from the structure delineations). The methods were trained on a subset of 4,331 images and each step was evaluated on the remaining 1,000 images. RESULTS: Plane classification reached 98.6% average class accuracy. Brain structure delineation obtained an average pixel accuracy higher than 96% and a Jaccard index higher than 70%. Automatic measurements get an absolute error below 3.5% for the four standard head biometries (head circumference, biparietal diameter, occipitofrontal diameter, and cephalic index), 9% for transcerebellar diameter, 12% for cavum septi pellucidi ratio, and 26% for Sylvian fissure operculization degree. CONCLUSIONS: The proposed pipeline shows the potential of deep learning methods to delineate fetal head and brain structures and obtain automatic measures of each anatomical standard plane acquired during routine fetal US examination.


Assuntos
Aprendizado Profundo , Gravidez , Feminino , Humanos , Cabeça/diagnóstico por imagem , Encéfalo/diagnóstico por imagem , Ultrassonografia Pré-Natal/métodos , Feto/diagnóstico por imagem
14.
Thromb Res ; 228: 181-188, 2023 08.
Artigo em Inglês | MEDLINE | ID: mdl-37348318

RESUMO

INTRODUCTION: Patients with cancer and venous thromboembolism (VTE) show a high risk of VTE recurrence during anticoagulant treatment. This study aimed to develop a predictive model to assess the risk of VTE recurrence within 6 months at the moment of primary VTE diagnosis in these patients. MATERIALS AND METHODS: Using the EHRead® technology, based on Natural Language Processing (NLP) and machine learning (ML), the unstructured data in electronic health records from 9 Spanish hospitals between 2014 and 2018 were extracted. Both clinically- and ML-driven feature selection were performed to identify predictors for VTE recurrence. Logistic regression (LR), decision tree (DT), and random forest (RF) algorithms were used to train different prediction models, which were subsequently validated in a hold-out data set. RESULTS: A total of 16,407 anticoagulated cancer patients with diagnosis of VTE were identified (54.4 % male and median age 70). Deep vein thrombosis, pulmonary embolism and metastases were observed in 67.2 %, 26.6 %, and 47.7 % of the patients, respectively. During the study follow-up, 11.4 % of the patients developed a recurrent VTE, being more frequent in patients with lung cancer. Feature selection and model training based on ML identified primary pulmonary embolism, deep vein thrombosis, metastasis, adenocarcinoma, hemoglobin and serum creatinine levels, platelet and leukocyte count, family history of VTE, and patients' age as predictors of VTE recurrence within 6 months of VTE diagnosis. The LR model had an AUC-ROC (95 % CI) of 0.66 (0.61, 0.70), the DT of 0.69 (0.65, 0.72) and the RF of 0.68 (0.63, 0.72). CONCLUSIONS: This is the first ML-based predictive model designed to predict 6-months VTE recurrence in patients with cancer. These results hold great potential to assist clinicians to identify the high-risk patients and improve their clinical management.


Assuntos
Embolia Pulmonar , Tromboembolia Venosa , Trombose Venosa , Humanos , Idoso , Lactente , Tromboembolia Venosa/tratamento farmacológico , Tromboembolia Venosa/etiologia , Recidiva Local de Neoplasia/induzido quimicamente , Recidiva Local de Neoplasia/tratamento farmacológico , Anticoagulantes/uso terapêutico , Embolia Pulmonar/tratamento farmacológico , Trombose Venosa/tratamento farmacológico , Aprendizado de Máquina , Recidiva , Fatores de Risco
15.
Clin Transl Oncol ; 25(10): 3021-3031, 2023 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-37036596

RESUMO

PURPOSE: Both venous and arterial thrombotic events (VTE/AT) can be associated with immune checkpoint inhibitors (ICI). However, there is a paucity of information apropos patients in routine clinical practice. METHODS/PATIENTS: Retrospective, multicenter study promoted by the Thrombosis and Cancer Section of the Spanish Society of Medical Oncology (SEOM). Individuals with kidney or bladder cancer who initiated ICI between 01/01/2015 and 12/31/2020 were recruited. Minimum follow-up was 6 months (except in cases of demise). The primary objective was to calculate the incidence of ICI-associated VTE/AT and secondary objectives included to analyze their impact on survival and identify variables predictive of VTE/AT. RESULTS: 210 patients with kidney cancer were enrolled. The incidence of VTE/AT during follow-up (median 13 months) was 5.7%. Median overall survival (OS) was relatively lower among subjects with VTE/AT (16 months, 95% CI 0.01-34.2 vs. 27 months, 95% CI 22.6-31.4; p = 0.43). Multivariate analysis failed to reveal predictive variables for developing VTE/ AT. 197 patients with bladder were enrolled. There was a 9.1% incidence rate of VTE/AT during follow-up (median 8 months). Median OS was somewhat higher in patients with VTE/AT (28 months, 95% CI 18.4-37.6 vs 25 months, 95% CI 20.7-29.3; p = 0.821). Serum albumin levels < 3.5 g/dl were predictive of VTE/ AT (p < 0.05). CONCLUSIONS: There appears to be no association between developing VTE/AT and ICI use in patients with renal or bladder cancer. Serum albumin levels are a predictive factor in individuals with bladder cancer.


Assuntos
Carcinoma de Células Renais , Neoplasias Renais , Trombose , Neoplasias da Bexiga Urinária , Tromboembolia Venosa , Humanos , Inibidores de Checkpoint Imunológico , Tromboembolia Venosa/etiologia , Estudos Retrospectivos , Bexiga Urinária , Oncologia , Neoplasias Renais/tratamento farmacológico , Neoplasias da Bexiga Urinária/tratamento farmacológico , Albumina Sérica , Fatores de Risco
16.
J. oral res. (Impresa) ; 12(1): 86-99, abr. 4, 2023. ilus
Artigo em Inglês | LILACS | ID: biblio-1512278

RESUMO

Objective: The objective of this study was to investigate the morphology, proliferation, and differentiation of gingival mesenchymal stem cells (GMSCs) irradiated with a 970 nm Diode Laser (LLLT). It is essential to validate the efficacy of treatment, optimize irradiation conditions and guarantee the safety and quality of stem cells for future use in dental applications. Materials and Methods: GMSCs were cultured in standard conditions and irradiated with a Diode laser (970 nm, 0.5W) with an energy density of 9J/cm2. Cell proliferation was assessed with the WST-1 proliferation kit. GMSCs were differentiated into chondrogenic and osteogenic lineages. Cell morphology was performed with Hematoxylin/eosin staining, and quantitative nuclear analysis was done. Cell viability was monitored with trypan blue testing. Results: GMSCs subjected to irradiation demonstrated a significant increase in proliferation at 72 hours compared to the non-irradiated controls (p=0.027). This indicates that the 970 nm diode laser has a stimulatory effect on the proliferation of GMSCs. LLLT-stimulated GMSCs exhibited the ability to differentiate into chondrogenic and osteogenic lineages. A substantial decrease in cell viability was observed 24 hours after irradiation (p=0.024). However, after 48 hours, the cell viability recovered without any significant differences. This indicates that there might be a temporary negative impact on cell viability immediately following irradiation, but the cells were able to recover and regain their viability over time. Conclusions: This study support that irradiation with a 970 nm diode laser could stimulate the proliferation of GMSCs, maintain their ability to differentiate into chondrogenic and osteogenic lineages, and has minimal impact on the mor- phological characteristics of the cells. These results support the potential use of NIR Lasers in combination with GMSCs as a promising strategy for dental treatments.


Objetivo: El objetivo de este estudio fue investigar la morfología, proliferación y diferenciación de las células madre mesenquimatosas (GMSC) irradiadas con un láser de diodo de 970 nm (LLLT). Es fundamental validar la eficacia del tratamiento, optimizar las condiciones de irradiación y garantizar la seguridad y calidad de las células madre para su uso futuro en aplicaciones dentales.Materiales y Métodos: Las GMSC se cultivaron en condiciones estándar y se irradiaron con un láser de diodo (970 nm, 0,5 W) con una densidad de energía de 9 J/cm2. La proliferación celular se evaluó con el kit de proliferación WST-1. Las GMSC se diferenciaron en linajes condrogénicos y osteogénicos. La morfología celular se realizó con tinción de hematoxilina/eosina y se realizó un análisis nuclear cuantitativo. La viabilidad celular se controló con prueba de azul de tripano. Resultados: Las GMSC sometidas a irradiación demostraron un aumento significativo en la proliferación a las 72 horas en comparación con los controles no irradiados (p=0,027). Esto indica que el láser de diodo de 970 nm tiene un efecto estimulante sobre la proliferación de GMSC. Las GMSC estimuladas con LLLT exhibieron la capacidad de diferenciarse en linajes condrogénicos y osteogénicos. Se observó una disminución sustancial de la viabilidad celular 24 horas después de la irradiación (p=0,024). Sin embargo, después de 48 horas, la viabilidad celular se recuperó sin diferencias significativas. Esto indica que podría haber un impacto negativo temporal en la viabilidad de las células inmediatamente después de la irradiación, pero las células pudieron recuperarse y recuperar su viabilidad con el tiempo. Conclusión: En conclusión, este estudio respalda que la irradiación con un láser de diodo de 970 nm podría estimular la proliferación de GMSC, mantener su capacidad para diferenciarse en linajes condrogénicos y osteogénicos y tiene un impacto mínimo en las características morfológicas de las células. Estos resultados respaldan el uso potencial de láseres NIR en combinación con GMSC como una estrategia prometedora para tratamientos dentales.


Assuntos
Humanos , Terapia com Luz de Baixa Intensidade , Proliferação de Células/efeitos da radiação , Lasers Semicondutores , Células-Tronco Mesenquimais/efeitos da radiação , Técnicas In Vitro , Gengiva/efeitos da radiação
17.
rev.cuid. (Bucaramanga. 2010) ; 14(2): 1-11, 20230428.
Artigo em Espanhol | LILACS, BDENF - Enfermagem, COLNAL | ID: biblio-1512622

RESUMO

Introducción: La actividad laboral de las personas siempre ha transformado al mundo, sin embargo, ha generado muchos riesgos y enfermedades. Asimismo, el trabajo ha sido afectado por la globalización, la tecnología y la crisis sanitaria por la COVID-19. Generando, transformaciones en las estructuras del empleo y en las condiciones del trabajo, tornándose más exigente en el área laboral, estas condiciones han predispuesto factores psicosociales negativos que amenaza la salud; ocasionando enfermedades y accidentes laborales, y como consecuencia un deficiente rendimiento laboral. Objetivo: Determinar la relación entre los factores psicosociales y el rendimiento laboral en colaboradores de una institución educativa privada de Lima. Metodología: Enfoque cuantitativo, de diseño no experimental, corte transversal y de tipo correlacional. En el estudio participaron 120 colaboradores de la institución educativa privada, según el muestreo no probabilístico; como instrumento se aplicó el Cuestionario de "Factores Psicosociales en el Trabajo" y el "El cuestionario de Rendimiento Laboral Individual" compartido digitalmente través del correo electrónico. Resultados: del total de los encuestados, el 52,50% manifestaron tener una buena percepción de los factores psicosociales; sin embargo, se obtuvo una mala percepción en las dimensiones exigencia laboral con el 63,30% y satisfacción con la remuneración del rendimiento con el 52,50%; con respecto a la variable rendimiento laboral, el 75,00% demostró un nivel alto. Conclusión: Los trabajadores que indicaron una alta exigencia laboral tuvieron 11 veces mayor probabilidad de presentar un alto rendimiento en su trabajo (OR:11,03; IC 95%: 1,71-17,95).


Introduction: People's work has always transformed the world; however, it has also posed many risks and diseases. Likewise, work has been affected by globalization, technology, and the COVID-19 health crisis. There have been transformations in employment structures and working conditions, which have become more demanding. These conditions have predisposed negative psychosocial factors that threaten health, causing occupational illnesses and accidents and, consequently, poor work performance. Objective: To determine the relationship between psychosocial factors and work performance in employees of a private educational institution in Lima. Methods: Quantitative approach, non-experimental, cross-sectional, and correlational design. A total of 120 employees of the private educational institution participated in the study, according to a non-probabilistic sampling method. The Psychosocial Factors at Work Questionnaire and the "Individual Work Performance Questionnaire," shared digitally via e-mail, were used. Results: Of the total respondents, 52.50% had a good perception of psychosocial factors; however, a poor perception was identified in the dimensions "work demands" (63.30%) and "satisfaction with performance compensation" (52.50%). Conclusion: Workers who indicated high work demands were 11 times more likely to have high work performance (OR: 11.03; 95% CI: 1.71­17.95).


Introdução: A atividade de trabalho das pessoas sempre transformou o mundo, no entanto, gerou muitos riscos e doenças. Da mesma forma, o trabalho tem sido afetado pela globalização, pela tecnologia e pela crise sanitária da COVID-19. Estas condições predispuseram fatores psicossociais negativos que ameaçam a saúde, causando doenças e acidentes no trabalho e, como consequência, um mau desempenho no trabalho. Objetivo: Determinar a relação entre fatores psicossociais e o desempenho no trabalho dos funcionários de uma instituição de ensino privada em Lima. Metodologia: Abordagem quantitativa, projeto não-experimental, transversal e correlacional. O estudo envolveu 120 funcionários da instituição privada de ensino, de acordo com amostragem não-probabilística; o questionário "Fatores Psicossociais no Trabalho" e o "Questionário de Desempenho Individual do Trabalho", compartilhado digitalmente por e-mail, foram utilizados como instrumentos. Resultados: Do número total de entrevistados, 52,50% afirmaram que tinham uma boa percepção dos fatores psicossociais; no entanto, foi obtida uma má percepção nas dimensões das demandas do trabalho com 63,30% e satisfação com a remuneração por desempenho com 52,50%; com relação ao desempenho variável do trabalho, 75,00% mostraram um alto nível. Conclusão: Os trabalhadores que indicaram altas exigências de trabalho tinham 11 vezes mais probabilidade de ter alto desempenho no trabalho (OR: 11,03; 95% CI: 1,71-17,95).


Assuntos
Saúde Ocupacional , Desempenho Profissional , Satisfação no Emprego , Doenças Profissionais
18.
Biomacromolecules ; 24(4): 1563-1573, 2023 04 10.
Artigo em Inglês | MEDLINE | ID: mdl-36877960

RESUMO

Viral mimetics is a noteworthy strategy to design efficient delivery systems without the safety drawbacks and engineering difficulties of modifying viral vectors. The triblock polypeptide CSB was previously designed de novo to self-assemble with DNA into nanocomplexes called artificial virus-like particles (AVLPs) due to their similarities to viral particles. Here, we show how we can incorporate new blocks into the CSB polypeptide to enhance its transfection without altering its self-assembly capabilities and the stability and morphology of the AVLPs. The addition of a short peptide (aurein) and/or a large protein (transferrin) to the AVLPs improved their internalization and specific targeting to cells by up to 11 times. Overall, these results show how we can further program the cellular uptake of the AVLPs with a wide range of bioactive blocks. This can pave the way to develop programmable and efficient gene delivery systems.


Assuntos
Nanopartículas , Transfecção , Nanopartículas/química , Técnicas de Transferência de Genes , Peptídeos/química , DNA
19.
Artigo em Inglês | MEDLINE | ID: mdl-36901426

RESUMO

There is an increasing interest in developing natural herb-infused functional beverages with health benefits; therefore, in this study, we aimed to evaluate the effect of strawberry, blueberry, and strawberry-blueberry blend decoction-based functional beverages on obesity-related metabolic alterations in high-fat and high-fructose diet-fed rats. The administration of the three berry-based beverages for eighteen weeks prevented the development of hypertriglyceridemia in obese rats (1.29-1.78-fold) and hepatic triglyceride accumulation (1.38-1.61-fold), preventing the development of hepatic steatosis. Furthermore, all beverages significantly down-regulated Fasn hepatic expression, whereas the strawberry beverage showed the greatest down-regulation of Acaca, involved in fatty acid de novo synthesis. Moreover, the strawberry beverage showed the most significant up-regulation of hepatic Cpt1 and Acadm (fatty acid ß-oxidation). In contrast, the blueberry beverage showed the most significant down-regulation of hepatic Fatp5 and Cd36 (fatty acid intracellular transport). Nevertheless, no beneficial effect was observed on biometric measurements, adipose tissue composition, and insulin resistance. On the other hand, several urolithins and their derivatives, and other urinary polyphenol metabolites were identified after the strawberry-based beverages supplementation. In contrast, enterolactone was found significantly increase after the intake of blueberry-based beverages. These results demonstrate that functional beverages elaborated with berry fruits prevent diet-induced hypertriglyceridemia and hepatic steatosis by modulating critical genes involved in fatty acid hepatic metabolism.


Assuntos
Mirtilos Azuis (Planta) , Fígado Gorduroso , Fragaria , Hipertrigliceridemia , Ratos , Animais , Metabolismo dos Lipídeos , Mirtilos Azuis (Planta)/metabolismo , Fígado/metabolismo , Obesidade/metabolismo , Ácidos Graxos/metabolismo , Hipertrigliceridemia/metabolismo , Bebidas , Dieta Hiperlipídica
20.
Saudi Pharm J ; 31(1): 21-28, 2023 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-36685306

RESUMO

This study is the first record of medicinal plants in the southwest of the Coahuila state, an arid zone where extreme dry conditions prevail. One hundred twenty-two residents (in sixteen communities) were interviewed. The residents were questioned with a questionnaire-guided ethnomedical survey protocol about the various plants used. Seventy-seven species of medicinal plants belonging to 36 botanical families were cited. The highest use-value (UV) was calculated for Lippia graveolens Kunth (0.30); Aloe vera (L.) Burm.f. (0.20); Eucalyptus abdita Brooker & Hopper, Chamaemelum nobile (L.) All. (0.16); Mentha spicata L. (0.15) and Salvia officinalis L. (0.10). Informant consensus factor (ICF) about usages of medicinal plants ranges from 0.41 to 0.80; the highest level of agreement was determined between the informants and Respiratory System Diseases (0.80). The highest fidelity level (FL) values (100%) were identified in Flourensia cernua DC., Artisia ludoviciana Nutt., and Parthenium incanum Kunth to Gastro-intestinal System Diseases; Eucalyptus abdita Brooker & Hopper, Bougainvillea berberidifolia Heimerl, and Lippia graveolens Kunth to Respiratory System Diseases (RSD) and Cyclolepis genistoides D.Don and Ephedra antisyphilitica Berland. ex C.A.Mey. to Obstetrics, Gynecology and Urinary tract Diseases. These last two medicinal plant species ("palo azul" and "pitoreal") used by the rural communities in Viesca in the treatment of urinary tract infections and kidney stones have not been reported previously. These findings can provide new research directions for further phytochemical studies. The present study revealed that the residents are rich in ethno-medicinal knowledge and actively use medicinal plants to treat various diseases. New phytochemical and pharmacological research are needed to confirm the therapeutic potential and safety of the identified plants.

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