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1.
Dalton Trans ; 2024 May 03.
Artículo en Inglés | MEDLINE | ID: mdl-38700377

RESUMEN

Selective recognition of fructosyl amino acids in water by arylboronic acid-based receptors is a central field of modern supramolecular chemistry that impacts biological and medicinal chemistry. Fructosyl valine (FV) and fructosyl glycyl histidine (FGH) occur as N-terminal moieties of human glycated hemoglobin; therefore, the molecular design of biomimetic receptors is an attractive, but very challenging goal. Herein, we report three novel cationic Zn-terpyridine complexes bearing a fluorescent N-quinolinium nucleus covalently linked to three different isomers of strongly acidified phenylboronic acids (ortho-, 2Zn; meta-, 3Zn and para-, 4Zn) for the optical recognition of FV, FGH and comparative analytes (D-fructose, Gly, Val and His) in pure water at physiological pH. The complexes were designed to act as fluorescent receptors using a cooperative action of boric acid and a metal chelate. Complex 3Zn was found to display the most acidic -B(OH)2 group (pKa = 6.98) and exceptionally tight affinity for FV (K = 1.43 × 105 M-1) with a strong quenching analytical response in the micromolar concentration range. The addition of fructose and the other amino acids only induced moderate optical changes. On the basis of several spectroscopic tools (1H, 11B NMR, UV-Vis, and fluorescence titrations), ESI mass spectrometry, X-ray crystal structure, and DFT calculations, the interaction mode between 3Zn and FV is proposed in a 1 : 1 model through a cooperative two-point recognition involving a sp3 boronate-diol esterification with simultaneous coordination bonding of the carboxylate group of Val to the Zn atom. Fluorescence quenching is attributed to a static complexation photoinduced electron transfer mechanism as evidenced by lifetime experiments. The addition of FGH to 3Zn notably enhanced its emission intensity with micromolar affinity, but with a lower apparent binding constant than that observed for FV. FGH interacts with 3Zn through boronate-diol complexation and coordination of the imidazole ring of His. DFT-optimized structures of complexes 3Zn-FV and 3Zn-FGH show a picture of binding which shows that the Zn-complex has a suitable (B⋯Zn) distance to the two-point recognition with these analytes. Molecular recognition of fructosyl amino acids by transition-metal-based receptors has not been explored until now.

2.
Cutis ; 113(3): 119-122, 2024 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-38648590

RESUMEN

Frontal fibrosing alopecia (FFA) is an increasingly common diagnosis, especially in middle-aged women, and has garnered growing attention in the scientific literature. This variant of lichen planopilaris (LPP) is recognized as a progressive scarring alopecia affecting the frontal and temporal regions of the scalp as well as the eyebrows and occasionally other sites. Although its precise etiology remains elusive, various factors such as genetics, medications, hormonal influences, and environmental exposures-including specific chemicals present in sunscreens-have been implicated in its pathogenesis but without evidence of causality. The potential relationship between contact allergy and FFA has been explored, with some suggesting an increased prevalence of contact allergy among patients diagnosed with FFA. This article aims to explore the potential association between contact allergy and FFA, focusing on the current published literature and implicated allergens.


Asunto(s)
Alopecia , Dermatitis Alérgica por Contacto , Liquen Plano , Humanos , Alopecia/etiología , Alopecia/diagnóstico , Alopecia/patología , Dermatitis Alérgica por Contacto/diagnóstico , Dermatitis Alérgica por Contacto/etiología , Liquen Plano/diagnóstico , Liquen Plano/etiología , Femenino
3.
J Clin Med ; 13(5)2024 Mar 05.
Artículo en Inglés | MEDLINE | ID: mdl-38592311

RESUMEN

Background: This prospective randomized, controlled pilot trial to explore the immediate effect of adding Mirror Visual Feedback Therapy on pain sensitivity and motor performance among subjects suffering from post-needling pain diagnosed as Lateral Elbow Pain. Methods: A total of 49 participants (23 female, 26 male) were enrolled and randomly allocated to either the experimental group, which received Deep Dry Needling in the m. Brachioradialis, Ischemic Compression, Cold Spray, Stretching, and Mirror Visual Feedback Therapy (n = 25), or a control group without Mirror Visual Feedback Therapy (n = 24). Pre- and post-treatment evaluations included assessments of post-needling pain intensity, pressure pain threshold, two-point discrimination threshold, and maximum hand grip strength. Results: Intergroup analysis revealed a statistically significant reduction in post-needling pain intensity favoring the experimental group (U = 188.00, p = 0.034). Additionally, intragroup analysis showed significant improvements in post-needling pain intensity (MD = 0.400, SEM = 0.271, W = 137.00, p = 0.047) and pressure pain threshold (MD = 0.148 Kg/cm2, SEM = 0.038, W = 262.00, p < 0.001) within the experimental group following the intervention. Conclusions: These findings suggest a potential benefit of integrating Mirror Visual Feedback Therapy into treatment protocols for individuals with Lateral Elbow Pain experiencing post-needling discomfort. Further research is necessary to fully elucidate the clinical implications of these findings.

4.
Pancreas ; 53(4): e357-e367, 2024 Apr 01.
Artículo en Inglés | MEDLINE | ID: mdl-38518062

RESUMEN

OBJECTIVES: Secondary infections due to transmission via the duodenoscope have been reported in up to 3% of endoscopic retrograde cholangiopancreatographies. The use of single-use duodenoscopes has been suggested. We investigate the cost-effectiveness of these duodenoscopes use in cholangiopancreatography. MATERIALS AND METHODS: A cost-effectiveness analysis was implemented to compare the performance of cholangiopancreatographies with reusable duodenoscopes versus single-use duodenoscopes. Effectiveness was analyzed by calculating quality-adjusted life years (QALY) from the perspective of the National Health System. Possibility of crossover from single-use to reusable duodenoscopes was considered. A willingness-to-pay of €25,000/QALY was set, the incremental cost-effectiveness ratio (ICER) was calculated, and deterministic and probabilistic sensitivity analyses were performed. RESULTS: Considering cholangiopancreatographies with single-use and reusable duodenoscopes at a cost of €2900 and €1333, respectively, and a 10% rate of single-use duodenoscopes, ICER was greater than €3,000,000/QALY. A lower single-use duodenoscope cost of €1211 resulted in an ICER of €23,583/QALY. When the unit cost of the single-use duodenoscope was €1211, a crossover rate of more than 9.5% made the use of the single-use duodenoscope inefficient. CONCLUSIONS: Single-use duodenoscopes are cost-effective in a proportion of cholangiopancreatographies if its cost is reduced. Increased crossover rate makes single-use duodenoscope use not cost-effective.


Asunto(s)
Colangiopancreatografia Retrógrada Endoscópica , Duodenoscopios , Humanos , Colangiopancreatografia Retrógrada Endoscópica/métodos , Análisis de Costo-Efectividad , Diseño de Equipo
6.
Ecol Evol ; 14(3): e11170, 2024 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-38529022

RESUMEN

We examined the variation in liana community composition and structure across geopedological land units to test the hypothesis that environmental heterogeneity is a driving force in liana community assembly. The study site was the Los Tuxtlas Tropical Biology Station, SE Mexico, a reserve that encompasses 640 ha of tropical rainforest. We sampled all lianas with basal diameter ≥1 cm in three 0.5-ha plots established in each of five land units (totaling 15 plots and 7.5 ha). We censused 6055 individuals and 110 species. Overall, the most speciose families were also the most abundant ones. Density and basal area of some dominant liana species differed among land units, and a permutational multivariate analysis of variance (PERMANOVA) and a non-metric multidimensional scaling ordination (NMDS) revealed differences in the presence, density, and basal area of liana species across the landscape. Liana composition and structure were highly heterogeneous among land units, suggesting that variations in soil water availability and relief are key drivers of liana community spatial differentiation. By showing that soil and topography play an important role at the landscape scale, we underscore the ecological relevance of environmental heterogeneity for liana community assembly. In the future, as our ability to assess the local environmental complexity increases, we will gain a better understanding of the liana community assembly process and their heterogeneous distribution in tropical forests.

7.
Surg Infect (Larchmt) ; 25(2): 87-94, 2024 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-38394296

RESUMEN

Background: Pneumonia is associated with increased morbidity and costs in the intensive care unit (ICU). Its early identification is key for optimal outcomes, but early biomarkers are lacking. Studies suggest that fibrinolysis resistance (FR) after major abdominal surgery is linked to an increased risk of infection. Patients and Methods: Patients in a randomized controlled trial for hemorrhagic shock were evaluated for FR. Fibrinolysis resistance was quantified by thrombelastography with exogenous tissue plasminogen activator (tPA-TEG) at 24- and 48-hours post-injury and measuring LY30 (%). A receiver-operating characteristics (ROC) curve analysis was used to identify a cutoff for increased risk of pneumonia, which was then validated in ICU patients at risk for venous thromboembolism (VTE). Multivariable logistic regression was used to control for confounders. Results: Forty-nine patients in the hemorrhagic shock cohort had tPA-TEGs at 24- and 48-hours (median ISS, 27; 7% pneumonia). A composite tPA-TEG LY30 of less than 4% at 24 and 48 hours was found to be the optimal cutoff for increased risk of pneumonia. This cohort had a seven-fold increased rate of pneumonia (4% vs. 28%; p = 0.048). Eighty-eight patients in the VTE cohort had tPA-TEGs at 24 and 48 hours post-ICU admission (median ISS, 28; 6% pneumonia). The tPA-TEG LY30 of less than 4% was associated with a 10-fold increased rate of pneumonia (19% vs. 1.5%; p = 0.002). In patients with traumatic brain injury, the same association was found (33% vs. 3.2%; p = 0.006). Adjusting for confounders, the tPA-TEG persisted as a substantial risk factor for pneumonia (adjusted odds ratio [OR], 35.7; 95% confidence interval [CI], 1.9-682; p = 0.018). Conclusions: Fibrinolysis resistance quantified by tPA-TEG within 48 hours of ICU admission is associated with an increased risk of pneumonia in patients in hemorrhagic shock and those at risk for VTE. Prospective validation of the tPA-TEG LY30 optimal cutoff for pneumonia and further investigation into whether endogenous FR is a cause of an altered immunity is warranted.


Asunto(s)
Choque Hemorrágico , Tromboembolia Venosa , Heridas y Lesiones , Humanos , Fibrinólisis , Activador de Tejido Plasminógeno , Tromboembolia Venosa/epidemiología , Tromboembolia Venosa/etiología , Factores de Riesgo , Hospitales
8.
Arthritis Res Ther ; 26(1): 13, 2024 01 04.
Artículo en Inglés | MEDLINE | ID: mdl-38172907

RESUMEN

OBJECTIVE: To investigate the usefulness of 18F-FDG PET-CT for assessing large-vessel (LV) involvement in patients with suspected giant cell arteritis (GCA) and a negative temporal artery biopsy (TAB). METHODS: A retrospective review of our hospital databases was conducted to identify patients with suspected GCA and negative TAB who underwent an 18F-FDG PET-CT in an attempt to confirm the diagnosis. The gold standard for GCA diagnosis was clinical confirmation after a follow-up period of at least 12 months. RESULTS: Out of the 127 patients included in the study, 73 were diagnosed with GCA after a detailed review of their medical records. Of the 73 patients finally diagnosed with GCA, 18F-FDG PET-CT was considered positive in 61 cases (83.5%). Among the 54 patients without GCA, 18F-FDG PET-CT was considered positive in only eight cases (14.8%), which included 1 case of Erdheim-Chester disease, 3 cases of IgG4-related disease, 1 case of sarcoidosis, and 3 cases of isolated aortitis. Overall, the diagnostic performance of 18F-FDG PET-CT for assessing LV involvement in patients finally diagnosed with GCA and negative TAB yielded a sensitivity of 83.5%, specificity of 85.1%, and a diagnostic accuracy of 84% with an area under the ROC curve of 0.844 (95% CI: 0.752 to 0.936). The sensitivity was 89% in occult systemic GCA and 100% in extracranial LV-GCA. CONCLUSION: Our study confirms the utility of 18F-FDG PET-CT in patients presenting with suspected GCA and a negative TAB by demonstrating the presence of LV involvement across different subsets of the disease.


Asunto(s)
Arteritis de Células Gigantes , Humanos , Arteritis de Células Gigantes/diagnóstico por imagen , Tomografía Computarizada por Tomografía de Emisión de Positrones , Fluorodesoxiglucosa F18 , Arterias Temporales/diagnóstico por imagen , Arterias Temporales/patología , Estudios Retrospectivos , Biopsia
9.
Sci Med Footb ; 8(2): 112-118, 2024 May.
Artículo en Inglés | MEDLINE | ID: mdl-36862076

RESUMEN

There is evidence that elite soccer players live longer than general population, but there is no information on soccer coaches and referees. We aimed to analyze the longevity of both professionals, comparing them with soccer players and with general population. In this retrospective cohort study, a total of 328 male Spanish soccer coaches, 287 referees, and 1230 soccer players, all born before 1950, were divided in two cohorts, matched 2:1 with coaches and referees. We compared the survival of the cohorts with the Kaplan-Meier estimator and significance with the log-rank test. We calculated hazard ratios of death for coaches and referees compared with male Spanish general population of the same period. Differences in survival among cohorts were found, but they did not reach statistical significance. The estimated median survival time was 80.1 years (95% CI 77.7-82.4) for referees, 78 years (95% CI 76.6-79.3) for coaches, 78.8 years (95% CI 77.6-80) for referees matched with players, and 76.6 years (95% CI 75.3-77.9) for coaches matched with players. Both coaches and referees had lower mortality than general population, but this advantage disappeared after 80 years of age. We found no differences in longevity among Spanish elite soccer referees, coaches and players born before 1950. Both coaches and referees had lower mortality than general population, but this advantage disappeared after 80 years of age.


Asunto(s)
Fútbol , Humanos , Masculino , Estudios Retrospectivos , Longevidad
11.
Artículo en Español | LILACS-Express | LILACS | ID: biblio-1550977

RESUMEN

Introducción: El análisis de la situación de salud es una investigación primordial que se realiza en el sistema de salud cubano, en el que se estudia la salud, los elementos que la determinan y las formas de mejorarla. Objetivo: Evaluar la propuesta de diseño de un esquema que contribuya a la mejora del aprendizaje del análisis de la situación de salud de la comunidad para los residentes de la especialidad Medicina General Integral, pertenecientes a la Universidad de Ciencias Médicas de Guantánamo. Método: Se realizó una investigación pedagógica de tipo descriptiva en la antes mencionada institución durante el período marzo-julio de 2022. De un universo de 67 profesores que aceptaron participar, se seleccionaron 26 por muestreo intencional. Para obtener los datos primarios fueron aplicados tres cuestionarios tipo Likert para evaluar el esquema, en consideración con la estructura, la funcionalidad y el aporte en el aprendizaje. Dichos cuestionarios incluyeron las respuestas: Totalmente en desacuerdo, En desacuerdo, Ni de acuerdo ni en desacuerdo, De acuerdo y Totalmente de acuerdo. Los datos se resumieron en números absolutos y porcentajes. Se presentaron en tablas de distribución de frecuencias. Resultados: Los subtotales de respuestas Totalmente de acuerdo y De acuerdo sobre la evaluación estructural y funcional, así como la influencia que se espera de este para mejorar el aprendizaje del análisis de situación de salud, se consideraron adecuados al superar el estándar. Conclusiones: El esquema propuesto es evaluado como adecuado en estructura y funcionalidad. Se considera positiva la influencia que se espera de este para mejorar el aprendizaje del análisis de situación de salud de la comunidad.


Introduction: The analysis of the health situation is a fundamental investigation carried out in the Cuban health system, in which health is studied, the elements that determine it and the ways to improve it. Objective: To evaluate the design proposal of a scheme that contributes to the improvement of learning of the analysis of the health situation of the community for the residents of the Comprehensive General Medicine specialty, belonging to the Universidad de Ciencias Médicas de Guantánamo. Method: A descriptive pedagogical research was carried out in the aforementioned institution during the period March-July 2022. From a universe of 67 teachers who agreed to participate, 26 were selected by intentional sampling. To obtain primary data, three Likert-type questionnaires were applied to evaluate the scheme, taking into consideration the structure, functionality and contribution to learning. These questionnaires included the responses: Totally disagree, Disagree, Neither agree nor disagree, Agree and Totally agree. Data were summarized in absolute numbers and percentages. They were presented in frequency distribution tables. Results: The subtotals of Completely Agree and Agree responses on the structural and functional evaluation, as well as the expected influence of this to improve the learning of health situation analysis, were considered adequate when exceeding the standard. Conclusions: The proposed scheme is evaluated as adequate in structure and functionality. The influence expected from this to improve learning about the analysis of the community's health situation is considered positive.


Introdução: A análise da situação sanitária é uma investigação fundamental realizada no sistema de saúde cubano, no qual se estuda a saúde, os elementos que a determinam e as formas de melhorá-la. Objetivo: Avaliar a proposta de desenho de um esquema que contribua para a melhoria da aprendizagem da análise da situação de saúde da comunidade para os residentes da especialidade Medicina Geral Integral, pertencente à Universidad de Ciencias Médicas de Guantánamo. Método: Foi realizada uma pesquisa pedagógica descritiva na referida instituição durante o período de março a julho de 2022. De um universo de 67 professores que aceitaram participar, 26 foram selecionados por amostragem intencional. Para obtenção dos dados primários, foram aplicados três questionários do tipo Likert para avaliação do esquema, levando em consideração a estrutura, funcionalidade e contribuição para a aprendizagem. Esses questionários incluíram as respostas: Discordo totalmente, Discordo, Nem concordo nem discordo, Concordo e Concordo totalmente. Os dados foram resumidos em números absolutos e porcentagens. Eles foram apresentados em tabelas de distribuição de frequência. Resultados: Os subtotais das respostas Concordo Totalmente e Concordo na avaliação estrutural e funcional, bem como a influência esperada desta para melhorar a aprendizagem da análise da situação de saúde, foram considerados adequados quando excedem o padrão. Conclusões: O esquema proposto é avaliado como adequado em estrutura e funcionalidade.A influência que se espera disto para melhorar a aprendizagem sobre a análise da situação de saúde da comunidade é considerada positiva.

12.
Rev. chil. nutr ; 50(6)dic. 2023.
Artículo en Inglés | LILACS-Express | LILACS | ID: biblio-1550796

RESUMEN

Background: Reactive oxygen species (ROS) regulate glucose metabolism (GM) in skeletal muscle by improving the translocation of GLUT4. Antioxidant supplementation could block this physiological effect, altering glucose signaling during exercise. However, there is limited evidence in humans on whether antioxidant intake affects GM. Therefore, we aimed to determine the effect of an antioxidant cocktail (AOC) on GM at rest and during metabolic challenges. Methods: Ten healthy male subjects received AOC supplementation (1000 mg of Vitamin C, 600 IU of Vitamin E, and 600 mg of α-lipoic acid) or placebo (2.000 mg of talc) before two trials conducted 7 days apart. Trial 1: AOC 120 and 90 minutes before an endurance exercise (EEX) bout at 60 % of maximal oxygen uptake (VO2max); Trial 2: AOC 120 and 90 minutes before an oral glucose tolerance test (OGTT; 75 g glucose). Measurements of gas exchange and capillary blood samples were collected every 15 minutes during both trials. Results: AOC supplementation increased resting glucose levels (p<0.05). During Trial 1 (EEX), the AOC increased carbohydrate oxidation (CHOox) (p= 0.03), without effect in glucose blood levels. During Trial 2 (OGTT), the AOC supplementation had no significant effect on GM parameters. Conclusion: Acute supplementation with AOC increased resting glucose levels and CHOox during EEX in healthy subjects, with no effect on GM during the OGTT.


Antecedentes: Las especies reactivas de oxígeno (ROS) regulan el metabolismo de la glucosa (GM) en el músculo esquelético al mejorar la translocación de GLUT4. La suplementación con antioxidantes podría bloquear este efecto fisiológico, alterando la señalización de la glucosa durante el ejercicio. Sin embargo, existe evidencia limitada en humanos sobre si la ingesta de antioxidantes afecta el GM. Por lo tanto, nuestro objetivo fue determinar el efecto de un cóctel de antioxidantes (AOC) en el GM en reposo y durante desafíos metabólicos. Métodos: Sujetos sanos (sexo masculino; n= 10) recibieron suplementos de AOC (1.000 mg de vitamina C, 600 UI de vitamina E y 600 mg de ácido α-lipoico) o placebo (2.000 mg de talco) previo a dos pruebas realizadas con 7 días de diferencia. Prueba 1: AOC 120 y 90 minutos antes de una serie de ejercicio de resistencia (EEX) al 60% del consumo máximo de oxígeno (VO2max); prueba 2: AOC 120 y 90 minutos antes de una prueba de tolerancia oral a la glucosa (OGTT; 75 g de glucosa). Se obtuvieron datos de intercambio de gaseoso y muestras de sangre capilar cada 15 minutos durante ambas pruebas. Resultados: la suplementación con AOC aumentó los niveles de glucosa en reposo (p<0,05). Durante la prueba 1 (EEX), el AOC aumentó la oxidación de carbohidratos (CHOox) (p= 0,03), sin efecto en los niveles de glucosa en sangre. Durante la prueba 2 (OGTT), la suplementación con AOC no tuvo un efecto significativo en los parámetros de GM. Conclusión: Una suplementación aguda con AOC aumentó los niveles de glucosa en reposo y la CHOox durante EEX en sujetos sanos, sin efecto sobre el GM durante la OGTT.

13.
Am J Surg ; 226(6): 829-834, 2023 12.
Artículo en Inglés | MEDLINE | ID: mdl-37604748

RESUMEN

INTRODUCTION: Creatinine, bilirubin, and fibrinolysis resistance are associated with multi-organ dysfunction and likely risk factors for prolonged intensive care unit (pICU) stay following liver transplantation (LT). We hypothesize postoperative day-1 (POD-1) labs will predict pICU. METHODS: LT recipients had clinical laboratories and viscoelastic testing with tissue plasminogen activator thrombelastography (tPA TEG) to quantify fibrinolysis resistance (LY30) on POD-1. pICU was defined as one week or longer in the ICU. Logistic regression was used to identify the relationship between POD-1 labs and pICU. RESULTS: Of 304 patients, 50% went to the ICU, with 15% experiencing pICU. Elevated creatinine (OR 6.6, P â€‹< â€‹0.001) and low tPA TEG LY30 (OR 3.7, P â€‹= â€‹0.004) were independent predictors of pICU after controlling for other risk factors. A 9-fold increase in the rate of 90-day graft loss (19% vs 2% p â€‹< â€‹0.001) was observed patients who had these risk factors for pICU. CONCLUSION: Elevated creatine and fibrinolysis resistance are associated with pICU and poor outcomes following LT.


Asunto(s)
Trasplante de Hígado , Activador de Tejido Plasminógeno , Humanos , Creatinina , Fibrinólisis , Cuidados Críticos
14.
Am J Surg ; 226(6): 817-822, 2023 12.
Artículo en Inglés | MEDLINE | ID: mdl-37407391

RESUMEN

BACKGROUND: End stage renal disease (ESRD) is associated with platelet dysfunction but also thromboembolic complications. The specific role of increased blood urea nitrogen (BUN) on coagulation is unclear. We aimed to characterize thromboelastography (TEG) parameters from males and females with ESRD and normal kidney function and evaluate if exogenous urea in vitro reproduced those TEG differences. METHODS: We collected blood samples from 20 living kidney donors and 20 kidney recipients. TEG was performed without and with two increasing urea concentrations in vitro. TEG parameters were compared between recipients and donors. RESULTS: Blood from kidney recipients showed baseline increased maximum amplitude (MA) and shortened time to maximum amplitude (TMA) compared to donors. These differences were not confirmed in females. In all patients, BUN was inversely correlated with TMA (r = -0.342; p = 0.031). In males, BUN and creatinine concentrations showed a direct correlation with MA (0.583; p = 0.007) and an inverse correlation with TMA (r = -0.520; p = 0.019). Urea in vitro decreased R-time (p = 0.005) and increased LY30 (p = 0.009) in donors but not recipients. CONCLUSIONS: ESRD is associated with increased MA and decreased TMA on TEG. No change in MA was observed with increasing urea concentrations in vitro. Gender-specific variability in TEG parameters were observed.


Asunto(s)
Fallo Renal Crónico , Tromboelastografía , Masculino , Femenino , Humanos , Coagulación Sanguínea , Diálisis Renal , Pacientes
15.
Data Brief ; 49: 109412, 2023 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-37520646

RESUMEN

This database contains the isotopic mass density and the contribution to activity, decay heat, photon emission, spontaneous fission rate, (α,n) emission rates and radiotoxicity of 150 nuclides that are present in nuclear fuel irradiated in PWRs. These nuclides are of paramount importance for nuclear waste characterization and fuel cycle analysis. These values were obtained by depletion calculations based on a 3D pin-cell geometry model and performed with the Monte Carlo reactor physics burnup calculation code Serpent2, with state-of-the-art nuclear data libraries and relevant methods. The calculations cover a wide range of burnup levels for conventional PWRs and take into account both UOX and MOX fuel. A broad span for initial enrichment for UOX (from 1.5% to 6.0%), and for both the initial plutonium content (from 4.0% to 12.0% and the plutonium isotopic composition of MOX has been considered. This database has been made publicly available due to its relevance in the fields of waste and fuel characterization, nuclear safeguards and radiation protection, and it will allow other potential users to avoid the time-consuming calculations required to obtain the aforementioned data. Additionally, it constitutes an interesting dataset for model training in machine learning applications related to nuclear science and engineering.

16.
Case Rep Emerg Med ; 2023: 1626736, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37484783

RESUMEN

Cellulitis is a potentially serious bacterial skin infection. Penile cellulitis refers to the inflammation of the penile shaft and commonly occurs in uncircumcised, sexually active young adults. We reported the case of a 25-year-old heterosexual circumcised male patient with a two-day history of swelling and pain over the penile shaft. Local examination revealed a diffusely swollen penile shaft, erythematous, warm to the touch, and tender. The penile discharge culture was suggestive of a Streptococcus species infection. Ultrasonography of the penis showed increased echogenicity of the left side of the penile shaft soft tissue with a markedly increased Doppler signal, indicating cellulitis. Based on these findings, the patient was diagnosed with cellulitis of the penis and managed with broad-spectrum antibiotics. Though history and clinical examination are sufficient to diagnose penile cellulitis, our case highlighted that ultrasound could also support the diagnosis of penile cellulitis and help rule out differentials.

17.
Rev Colomb Psiquiatr ; 2023 Apr 13.
Artículo en Español | MEDLINE | ID: mdl-37360791

RESUMEN

Introduction: During the covid-19 pandemic, mental health services were unable to cope with the high demand from the population, so many people chose to search the Internet for information that could help them cope with the psychological process they were experiencing at the time. The aim of this study was to characterize the global search trend for the term «psychiatry¼ in the context of covid-19 using Google Trends and Our World in Data. Methods: Descriptive-cross-sectional study on global search trends for Psychiatry in the context of covid-19 under the terms «psychiatry¼, «depression¼, «anxiety¼, «stress¼, «insomnia¼ and «suicide¼ in the category of health, this was conducted over the period 2020-2021 and time graphs were generated. Results: The term «psychiatry¼ remained at a consistently high relative search volume (between 60 and 90), with a significant and gradual search in the month of April. The relative search volume for «depression¼, «anxiety¼ and «stress¼ remained constant with some non-significant fluctuations over the period 2020-2021. The term «insomnia¼ was predominant between January and June 2020, gradually declining in April and remaining constant until October 2021. Finally, the term «suicide¼ had a fluctuating RBV between 60 and 100 during this period. Conclusions: During the study period, the topics related to mental health and the speciality of psychiatry remained constant, with some fluctuating, but not outstanding variations.

18.
J Biochem Mol Toxicol ; 37(9): e23416, 2023 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-37352109

RESUMEN

Daily, people are exposed to chemicals and environmental compounds such as bisphenols (BPs). These substances are present in more than 80% of human fluids. Human exposure to BPs is associated with male reproductive health disorders. Some of the main targets of BPs are intercellular junction proteins of the blood-testis barrier (BTB) in Sertoli cells because BPs alter the expression or induce aberrant localization of these proteins. In this systematic review, we explore the effects of BP exposure on the expression of BTB junction proteins and the characteristics of in vivo studies to identify potential gaps and priorities for future research. To this end, we conducted a systematic review of articles. Thirteen studies met our inclusion criteria. In most studies, animals treated with bisphenol-A (BPA) showed decreased occludin expression at all tested doses. However, bisphenol-AF treatment did not alter occludin expression. Cx43, ZO-1, ß-catenin, nectin-3, cortactin, paladin, and claudin-11 expression also decreased in some tested doses of BP, while N-cadherin and FAK expression increased. BP treatment did not alter the expression of α and γ catenin, E-cadherin, JAM-A, and Arp 3. However, the expression of all these proteins was altered when BPA was administered to neonatal rodents in microgram doses. The results show significant heterogeneity between studies. Thus, it is necessary to perform more research to characterize the changes in BTB protein expression induced by BPs in animals to highlight future research directions that can inform the evaluation of risk of toxicity in humans.


Asunto(s)
Barrera Hematotesticular , Células de Sertoli , Animales , Recién Nacido , Masculino , Humanos , Barrera Hematotesticular/metabolismo , Ocludina/metabolismo , Ocludina/farmacología , Células de Sertoli/metabolismo , Uniones Intercelulares
19.
JAAD Case Rep ; 37: 82-84, 2023 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-37342402
20.
Arch Esp Urol ; 76(2): 114-122, 2023 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-37139616

RESUMEN

BACKGROUND AND OBJECTIVE: One-stop clinics have emerged as a tool to optimize the therapeutic management of cancer patients. The main purpose of this study was to assess the role of the one-stop hematuria clinic (OSHC), as compared to a conventional clinic (CC), on the overall and disease-free survival of patients with bladder cancer. METHODS: A five-year follow-up retrospective and single-center study was conducted in patients with primary bladder tumor diagnosed between 2006 and 2015. The primary outcomes were five-year overall survival and one-year relapse rate. RESULTS: A total of 394 patients (160 in OSHC and 234 in CC) were included. No differences were observed in terms of age, sex, smoking habit or risk group between the OSHC and CC groups. The average times from first symptom to diagnosis (24.9 ± 29.1 vs. 100.7 ± 93.6 days) and from first symptom to treatment (70.2 ± 34.0 vs. 155.0 ± 102.9 days) were significantly lower in the OSHC group than in the CC group (p < 0.001 each). There was no significant difference in the five-year survival rate between OSHC and CC (103/160 vs. 150/234, respectively; p = 0.951), although the proportion of relapses during the first year was significantly lower in the OSHC group (35/139, 25.2%) than in the CC one (74/195, 38.0%; p = 0.02). CONCLUSIONS: OSHC significantly reduced the diagnosis and treatment times. The early-relapse rate was significantly lower in the OSHC group, although the five-year survival rate was similar.


Asunto(s)
Hematuria , Neoplasias de la Vejiga Urinaria , Hematuria/etiología , Hematuria/terapia , Neoplasias de la Vejiga Urinaria/complicaciones , Neoplasias de la Vejiga Urinaria/mortalidad , Tasa de Supervivencia , Recurrencia Local de Neoplasia , Supervivencia sin Enfermedad , Atención Ambulatoria , Humanos , Masculino , Femenino , Persona de Mediana Edad , Anciano , Anciano de 80 o más Años
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