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Introduction: Introduction: nutritional interventions (NI) in schoolchildren allow for health promotion, physical activity, and nutrition actions for the prevention of malnutrition. Objective: to evaluate the effect of an IN on the nutrient content in school snacks (SS) in public education schools in Mexico. Methods: descriptive, longitudinal, and prospective study with a sample of 812 children were classified into intervention group (IG) and control group (CG). Anthropometric measurements (weight, height, waist circumference) were made to identify nutritional status (NS); to evaluate the SS, the food and beverages that the children took from home to consume during the break were recorded on a checklist; the NI was performed in the IG for 12 weeks with a 6-week reinforcement and the final evaluation was carried out that included NS and overweight (OW) in both groups. Results: a 1.4 % increase in overweight (OW) and obesity (OB) was observed in the IG, while in the CG it increased 5.5 %. In the SS, the CGshowed a higher consumption of calories, carbohydrates, and sugars. In the intragroup analysis, the GI decreased carbohydrates, sugars. This intervention showed a small effect on the decrease of calories, carbohydrates and polyunsaturated acids of the IG compared to the CG. Conclusion: NI had a positive effect on the decrease in the energy and carbohydrate content of school snacks and therefore a slower trend in the prevalence of OW and OB in the IG compared to the CG.

Introducción: Introducción: las intervenciones nutricionales (IN) en escolares permiten realizar acciones de promoción de la salud, actividad física y nutrición para la prevención de la malnutrición. Objetivo: evaluar el efecto de una IN respecto el contenido de nutrientes de los refrigerios escolares (RE) en escuelas de educación pública en México. Métodos: estudio descriptivo, longitudinal y prospectivo con una muestra de 812 niños, se clasificaron en grupo intervención (GI) y grupo control (GC). Se realizaron mediciones antropométricas (peso, estatura circunferencia cintura), para identificar el estado nutricional (EN); para evaluar los RE, se registró los alimentos y bebidas que los niños llevaron de casa para consumir durante el recreo, en una lista de cotejo; se procedió a realizar la IN en el GI, durante 12 semanas con un refuerzo de 6 semanas y se realizó la evaluación final que incluyó EN y RE en ambos grupos. Resultados: se observó un aumento de 1,3 % de sobrepeso (SP) y obesidad (OB) en el GI, mientras que en el GC aumentó 5,4 %. En los RE, el GC mostró un mayor consumo de calorías, carbohidratos y azúcares. En el análisis intragrupo, el GI disminuyó carbohidratos, azúcares. Esta intervención mostro un efecto pequeño en la disminución de calorías, carbohidratos y ácidos poliinsaturados del GI comparado con el GC. Conclusión: la IN presentó efecto positivo en los la disminución del contenido de energía y carbohidratos de los refrigerios de los escolares y por consiguiente una tendencia más lenta en la prevalencia de SP y OB en el GI comparado con el GC.

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Reducing high concentrations of pollutants such as heavy metals, pesticides, drugs, and dyes from water is an emerging necessity. We evaluated the use of Luffa cylindrica (Lc) as a natural non-conventional adsorbent to remove azo dye mixture (ADM) from water. The capacity of Lc at three different doses (2.5, 5.0, and 10.0 g/L) was evaluated using three concentrations of azo dyes (0.125, 0.250, and 0.500 g/L). The removal percent (R%), maximum adsorption capacity (Qm), isotherm and kinetics adsorption models, and pH influence were evaluated, and Fourier-transform infrared spectroscopy and scanning electron microscopy were performed. The maximum R% was 70.8% for 10.0 g L-1Lc and 0.125 g L-1 ADM. The Qm of Lc was 161.29 mg g-1. Adsorption by Lc obeys a Langmuir isotherm and occurs through the pseudo-second-order kinetic model. Statistical analysis showed that the adsorbent dose, the azo dye concentration, and contact time significantly influenced R% and the adsorption capacity. These findings indicate that Lc could be used as a natural non-conventional adsorbent to reduce ADM in water, and it has a potential application in the pretreatment of wastewaters.

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The concentration effect of Tradescantia spathacea (T. spathacea) as corrosion inhibitor of API 5L X52 steel in 0.5 M of H2SO4 was studied here through electrochemical and gravimetric techniques. To achieve it, samples of the material were prepared to be submitted to each of the tests. Results from electrochemical impedance spectroscopy (EIS) showed that there was an optimum concentration of the inhibitor in which is reached the maximum inhibition efficiency, displaying the best inhibition characteristics for this system with a maximum inhibition of 89% by using 400 ppm. However, the efficiency decreased until 40% when the temperature was increased to 60°C. Potentiodynamic polarization curves (PDP) revealed that some of the present compounds of T. spathacea may affect anodic and cathodic process, so it can be classified as a mix-type corrosion inhibitor for API 5L X52 in sulfuric acid. Also, this compound followed an adsorption mechanism; this can be described through a Frumkin isotherm with an adsorption standard free energy difference (ΔG°) of -56.59 kJmol-1. Metal surface was studied through scanning electron microscope, results revealed that by adding inhibitor, the metal surface is protected; also, they evidenced low damages compared with the surface with no inhibitor. Finally, Tradescantia spathacea inhibited the corrosion process with 82% efficiency.

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Objective: Establish the disease burden of malignant mesothelioma (MM) in Colombia between 2015 and 2020, and its association with the subnational sociodemographic development index (SDI) and with asbestos sites. Methods: Mixed ecological study of the Colombian population diagnosed with MM (according to ICD-10) from 2015 to 2020. The global burden of disease (GBD) was estimated using the methodology proposed by Murray and Lopez, based on prevalence and mortality data obtained from official sources. The subnational (departmental level) SDI was estimated as a measure of socioeconomic development. Linear regressions were established with the GBD, SDI, and documented asbestos sites. Results: The estimated GBD of MM in Colombia during 2015-2020 was 51.71 disability-adjusted life years (DALYs) per 1 000 000 inhabitants (15 375.79 total DALYs), with predominance in people over 50 years of age (91.1%) and males (66.4%).Bogotá and Valle del Cauca were the departments with the highest number of adjusted DALYs. Bogotá had the highest SDI and Guainía and Cesar had the lowest. There was evidence of an association between DALYs and SDI, explaining 22.8% of DALYs. Conclusion: Malignant mesothelioma is the cause of a large number of DALYs, predominantly in the departments with greater socioeconomic development and with companies that used to use asbestos. However, possible underdiagnosis of MM limits analysis of the information.

Objetivo: Estabelecer o ônus da doença por mesotelioma maligno (MM) na Colômbia entre 2015 e 2020 e sua associação ao índice sociodemográfico subnacional (ISS) e locais de amianto. Métodos: Estudo ecológico misto na população colombiana diagnosticada com MM, de acordo com a CID-10 durante 2015 a 2020. A carga global da doença (CGD) foi estimada usando a metodologia proposta por Murray e López com base na prevalência e na mortalidade obtidas de fontes oficiais. O SDI subnacional (nível departamental) foi estimado como uma medida de desenvolvimento socioeconômico e foram estabelecidas regressões lineares com CGD, SDI e localizações documentadas de amianto. Resultados: A estimativa de CGD por MM na Colômbia entre 2015-2020 foi de 51,71 anos de vida ajustados por incapacidade (AVAI) por 1 000 000 de habitantes (15 375,79 AVAI totais), com predominância em pessoas com mais de 50 anos (91,1%) e do sexo masculino (66,4%).Com relação aos departamentos, Bogotá e Valle del Cauca tiveram o maior número de AVAI ajustados, enquanto Bogotá teve o maior SDI, e Guainía e Cesar, o menor. Houve uma associação entre os AVAI e o SDI, sendo que o SDI foi responsável por 22,8% dos AVAI. Conclusões: O MM é a causa de um grande número de AVAI, predominantemente em departamentos com maior desenvolvimento socioeconômico e com a presença de empresas que usavam amianto; no entanto, o possível subdiagnóstico do MM limita a análise das informações.

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Resumen Introducción/Objetivo: En tiempos de cambio, cobran mayor importancia las dinámicas sociales y laborales, las acciones para evaluar e intervenir sobre los riesgos psicosociales y la seguridad psicológica, que pueden llegar a afectar el desempeño y el comportamiento de las personas en sus lugares de trabajo. Este estudio tiene como objetivo realizar una revisión sistemática de las investigaciones empíricas que han abordado la seguridad psicológica en contextos organizacionales. Método: En esta revisión se siguieron las recomendaciones de la declaración PRISMA 2020, con el software CADIMA. Se consultaron las siguientes bases de datos: Scopus, APA PsycINFO, Web of Science y Redalyc. En total se identificaron 1678 documentos, se revisaron 196 en inglés, publicados entre el 2020 y 2022, que cumplieron con los criterios de selección. Resultados: La mayoría de los estudios se han desarrollado en Estados Unidos e Inglaterra, lo que evidencia la necesidad de realizar investigaciones en Iberoamérica y Latinoamérica. Se identifica que la seguridad psicológica está influenciada por factores del comportamiento organizacional en variados niveles de análisis individual, grupal y organizacional; algunos temas con los que se han llevado a cabo varios estudios incluyen la cultura organizacional, la relación del equipo de trabajo, la personalidad de los miembros del equipo, el desempeño, el aprendizaje y los procesos de gestión de conocimiento en las organizaciones. Conclusiones: Es una variable que cuando se relaciona con otras, cumple el rol de variable mediadora; se enlistan las variables psicológicas relacionadas con el constructo de seguridad psicológica, y se discuten los retos después de la pandemia del COVID-19.

Abstract Abstract Introduction/Objective: In times of change, social and work dynamics emphasize the importance of actions to assess and intervene in psychosocial risks and psychological safety, which can significantly impact individuals' performance and behavior in their workplaces. The objective of this study was to conduct a systematic review of empirical research focusing on psychological safety in organizational contexts. Method: This review followed the recommendations of the PRISMA 2020 statement, using the CADIMA software. The consulted databases were Scopus, APA PsycINFO, Web of Science, and Redalyc. A total of 1678 documents were identified, out of which 196 in English, published between 2020 and 2022, met the selection criteria. Results: Most of the studies were conducted in the United States and England, highlighting the need for further research in Ibero-America and Latin America. Psychological Safety was found to be influenced by organizational behavior factors at various levels of individual, group, and organizational analysis. Some of the topics explored in the studies include organizational culture, team relationships, team members' personalities, performance, learning, and knowledge management processes in organizations. Conclusions: Psychological Safety acts as a mediating variable when related to other constructs, and this review lists psychological variables associated with the psychological safety construct. Furthermore, the challenges after the COVID-19 pandemic are discussed.

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[RESUMEN]. Objetivo. Establecer la carga de enfermedad por mesotelioma maligno (MM) en Colombia entre 2015 y 2020 y su asociación con el índice sociodemográfico (SDI) subnacional y las localizaciones de asbesto. Métodos. Estudio ecológico mixto en la población colombiana con diagnóstico de MM según la CIE-10 durante 2015 a 2020. La carga global de enfermedad (GBD, por su sigla en inglés) se estimó por medio de la metodología propuesta de Murray y López a partir de la prevalencia y mortalidad obtenida de fuentes ofi- ciales. Se estimó el SDI (por su sigla en inglés) subnacional (nivel departamental) como medida de desarrollo socioeconómico y se establecieron regresiones lineales con la GBD, el SDI y las localizaciones documentadas de asbesto. Resultados. La GBD estimada por MM en Colombia durante 2015-2020 fue de 51,71 años de vida ajustados por discapacidad (AVAD) por cada 1 000 000 de habitantes (15 375,79 AVAD totales), con predominio en personas mayores de 50 años (91,1%) y de sexo masculino (66,4%). A nivel departamental, Bogotá y Valle del Cauca presentaron la mayor cantidad de AVAD ajustados; mientras que Bogotá tuvo el SDI más alto, y Guainía y Cesar el más bajo. Se evidenció una asociación entre los AVAD y el SDI, donde este último explicó 22,8% de los casos de AVAD. Conclusión. El MM es causa de una gran cantidad de AVAD, con predominio en los departamentos con mayor desarrollo socioeconómico, y con presencia de empresas que solían utilizar asbesto; no obstante, el posible subdiagnóstico de MM limita el análisis de la información.

[ABSTRACT]. Objective. Establish the disease burden of malignant mesothelioma (MM) in Colombia between 2015 and 2020, and its association with the subnational sociodemographic development index (SDI) and with asbestos sites. Methods. Mixed ecological study of the Colombian population diagnosed with MM (according to ICD-10) from 2015 to 2020. The global burden of disease (GBD) was estimated using the methodology proposed by Murray and Lopez, based on prevalence and mortality data obtained from official sources. The subnational (departmental level) SDI was estimated as a measure of socioeconomic development. Linear regressions were established with the GBD, SDI, and documented asbestos sites. Results. The estimated GBD of MM in Colombia during 2015–2020 was 51.71 disability-adjusted life years (DALYs) per 1 000 000 inhabitants (15 375.79 total DALYs), with predominance in people over 50 years of age (91.1%) and males (66.4%). Bogotá and Valle del Cauca were the departments with the highest number of adjusted DALYs. Bogotá had the highest SDI and Guainía and Cesar had the lowest. There was evidence of an association between DALYs and SDI, explaining 22.8% of DALYs. Conclusion. Malignant mesothelioma is the cause of a large number of DALYs, predominantly in the depart- ments with greater socioeconomic development and with companies that used to use asbestos. However, possible underdiagnosis of MM limits analysis of the information.

[RESUMO]. Objetivo. Estabelecer o ônus da doença por mesotelioma maligno (MM) na Colômbia entre 2015 e 2020 e sua associação ao índice sociodemográfico subnacional (ISS) e locais de amianto. Métodos. Estudo ecológico misto na população colombiana diagnosticada com MM, de acordo com a CID- 10 durante 2015 a 2020. A carga global da doença (CGD) foi estimada usando a metodologia proposta por Murray e López com base na prevalência e na mortalidade obtidas de fontes oficiais. O SDI subnacional (nível departamental) foi estimado como uma medida de desenvolvimento socioeconômico e foram estabelecidas regressões lineares com CGD, SDI e localizações documentadas de amianto. Resultados. A estimativa de CGD por MM na Colômbia entre 2015-2020 foi de 51,71 anos de vida ajustados por incapacidade (AVAI) por 1 000 000 de habitantes (15 375,79 AVAI totais), com predominância em pessoas com mais de 50 anos (91,1%) e do sexo masculino (66,4%). Com relação aos departamentos, Bogotá e Valle del Cauca tiveram o maior número de AVAI ajustados, enquanto Bogotá teve o maior SDI, e Guainía e Cesar, o menor. Houve uma associação entre os AVAI e o SDI, sendo que o SDI foi responsável por 22,8% dos AVAI. Conclusões. O MM é a causa de um grande número de AVAI, predominantemente em departamentos com maior desenvolvimento socioeconômico e com a presença de empresas que usavam amianto; no entanto, o possível subdiagnóstico do MM limita a análise das informações.

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AIM: Evaluate insulin resistance (IR) as a mediator of the effect of body fat distribution on liver fat infiltration and stiffness (LSt) in young adults using structural equation modeling (SEM). METHODS: We invited 500 first year students from two universities and evaluated their family history to determine the risk for cardiometabolic disease. Of these, 174 students (age 19 ± 1 years) were assessed for total body fat percentage (BF%), LSt, fat infiltration (Coefficient attenuated parameter CAP), and serum biochemical analysis. We performed a mediation analysis using two different structural equation models to determine the relationship between BMI, BF%, abdominal obesity (AO), IR, LSt, and fat infiltration using standardized ß coefficients. The symbol "->" means "explains/causes". RESULTS: Model#1 supported that mediation analysis and had a better fit than the direct effect. AO->IR (b = 0.62, p = 0.005), AO->CAP (b = 0.63, p <0.001), and CAP->IR (b = 0.23, p = 0.007), with negligible effect of BMI on CAP and IR. Model#2 showed direct effect of BMI on LSt was a better fit than mediation. BMI->LSt (b = 0.17, p = 0.05) but no effect AO->LSt. Interestingly, LSt->IR (b = 0.18, p = 0.001), but bi-directional IR->LSt (b = 0.23, p = 0.001). CONCLUSIONS: AO and BMI in young adults have differential phenotypic effects on liver CAP and LSt. Visceral fat had a direct effect on IR and CAP. Meanwhile, BMI was associated with LSt. Our findings shed light on the complex interplay of factors influencing liver stiffness, particularly in young individuals. Further research is needed to elucidate the precise mechanisms underlying these associations and their implications for liver health.

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Objective: To compare the effectiveness of cyanoacrylate to other treatments or placebo in the management of dentin hypersensitivity (DH). Materials and Methods: The present review was organized based on the preferred reporting items for systematic reviews and meta-analysis (PRISMA) guidelines. The search aimed to answer the following question: is cyanoacrylate effective in the treatment of DH when compared to other treatments or placebo? The following databases were used: PubMed/MEDLINE, Scopus, BVS, Web of Science, Cochrane, Clinicaltrials.gov, Portal Periódicos Capes, Google Scholar, and manual search. The evaluation process started with the information collected from the selected articles according to the Consolidated Standards of Reporting Trials (CONSORT). Results: Two randomized and five nonrandomized clinical trials were analyzed in the qualitative synthesis. The studies presented different cyanoacrylate formulations, different scales for evaluating pain, and different methods for provoking a painful stimulus. Cyanoacrylate-based products reduce DH in shorter follow-up periods and this reduction persisted throughout the study. The results varied according to the methods used to stimulate the pain. Only two articles showed a low risk of bias and a high level of scientific evidence. Conclusion: Although there is a limited number of studies in the scientific literature with appropriate methodological quality, the available evidence proves the effectiveness of cyanoacrylate in the treatment of DH. Clinical Relevance. Cyanoacrylate is easy to access, effective, easily applicable, and a low-cost product with satisfactory results.

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OBJECTIVE: To identify, qualify, and summarize the evidence from different systematic reviews about the outcomes of Rapid Maxillary Expansion (RME) on upper airway dimensions and breathing function in young patients. METHODS: A literature search (from 2000 to December 2022) was conducted through PubMed (MEDLINE), the Cochrane Library, EMBASE, and Dentistry & Oral Science Source. The authors conducted the following umbrella review phases: research question, study selection criteria (systematic reviews involving randomized clinical trials and longitudinal observational designs), data extraction, and critical appraisal (bias risk assessment) of selected articles through the ROBIS tool. RESULTS: The initial search yielded 65 potential references. After screening titles and summaries, and the elimination of duplicated publications, 15 articles were eligible for the evaluation of the full-text document. Finally, 11 systematic reviews (5 combined with meta-analysis) were selected, reporting 132 single studies; 38 of them were unrepeatable. Risk-of-bias assessment showed an average global moderate/high quality among the included studies. There was high heterogeneity between the systematic reviews' (and meta-analyses') methodologies used. CONCLUSIONS: The present umbrella review concludes that significant and stable increases in the nasal and oropharyngeal space volumes and a decrease in airway resistance of growing children and adolescents, occur immediately after RME and at 3, 6- and 12-months follow-up.

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Fusarium cerealis is a causal agent of Fusarium Head Blight in wheat, and it produces both deoxynivalenol (DON) and nivalenol (NIV). Nevertheless, the effect of environmental factors on the growth and mycotoxin production of this species has not been studied so far. The objective of this study was to investigate the impact of environmental factors on the growth and mycotoxin production of F. cerealis strains. All strains were able to grow in a wide range of water activity (aW) and temperatures, but their mycotoxin production was influenced by strain and environmental factors. NIV was produced at high aW and temperatures, while optimal conditions for DON production were observed at low aW. Interestingly, some strains were able to simultaneously produce both toxins, which could pose a more significant risk for grain contamination.

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The objective of this work was to evaluate the mechanical performance of Z350 resin composite modified with Bombyx mori cocoons silk nanoparticles for dental applications. Four experimental groups were analyzed G0% = Filtek Z350 resin composite (control); G1% = Filtek Z350 with 1% of silk nanoparticles; G3% = Filtek Z350 with 3% of silk nanoparticles; G5% = Filtek Z350 with 5% of silk nanoparticles. It was employed scanning electron microscopy, energy dispersive X-ray spectroscopy, X-ray diffraction, 3-point flexural strength test, Knoop hardness test, and surface roughness. From 3-point flexural strength tests the control group presented the best results G0% = 113.33 MPa (±23.73). The higher flexural modulus was shown by groups G3% = 29.150 GPa (±5.191) and G5% = 34.101 GPa (±7.940), which are statistically similar. The Knoop microhardness test has shown statistical difference only among the G3% group between the top 80.78 (± 3.00) and bottom 68.80 (±3.62) and no difference between the groups. The roughness test presented no statistical difference between the groups. The incorporation of silk nanoparticles reduced the flexural strength of Z350 resin composite. The surface roughness and microhardness tests showed no changes in any of the groups studied.

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Abstract The objective of this work was to evaluate the mechanical performance of Z350 resin composite modified with Bombyx mori cocoons silk nanoparticles for dental applications. Four experimental groups were analyzed G0% = Filtek Z350 resin composite (control); G1% = Filtek Z350 with 1% of silk nanoparticles; G3% = Filtek Z350 with 3% of silk nanoparticles; G5% = Filtek Z350 with 5% of silk nanoparticles. It was employed scanning electron microscopy, energy dispersive X-ray spectroscopy, X-ray diffraction, 3-point flexural strength test, Knoop hardness test, and surface roughness. From 3-point flexural strength tests the control group presented the best results G0% = 113.33 MPa (±23.73). The higher flexural modulus was shown by groups G3% = 29.150 GPa (±5.191) and G5% = 34.101 GPa (±7.940), which are statistically similar. The Knoop microhardness test has shown statistical difference only among the G3% group between the top 80.78 (± 3.00) and bottom 68.80 (±3.62) and no difference between the groups. The roughness test presented no statistical difference between the groups. The incorporation of silk nanoparticles reduced the flexural strength of Z350 resin composite. The surface roughness and microhardness tests showed no changes in any of the groups studied.

Resumo O objetivo deste trabalho foi avaliar o desempenho mecânico da resina composta Z350 modificada com nanopartículas de seda Bombyx mori cocoons para aplicações odontológicas. Quatro grupos experimentais foram analisados: G0%) Resina Z350 apenas (grupo controle); G1%) Reforço com 1% de nanopartículas de seda; G3%) Reforço com 3% de nanopartículas de seda; e G5%) Reforço com 5% de nanopartículas de seda. Foi empregado microscopia eletrônica de varredura, espectroscopia de energia dispersiva de raios X, difração de raios X, teste de resistência à flexão de 3 pontos, teste de dureza Knoop e rugosidade superficial. Nos testes de resistência à flexão de 3 pontos o grupo controle apresentou melhores resultados G0% = 0.113 GPa (±0.024). O maior módulo de flexão foi demonstrado pelos grupos G3% = 29.151GPa (±5.191) e G5% = 34.102 GPa (±7.94), que são estatisticamente semelhantes. O teste de microdureza Knoop mostrou diferença estatística apenas entre o grupo G3% entre os 80.78 superiores (± 3.00) e os 68.80 inferiores (±3.62). Não há diferença entre os grupos. O teste de rugosidade não apresentou diferença estatística entre os grupos. A incorporação de nanopartículas de seda reduziu a resistência à flexão da resina composta Z350. Os testes de rugosidade superficial e microdureza não apresentaram alterações em nenhum dos grupos estudados.

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Cisplatin is a chemotherapeutic drug used to treat a great variety of solid tumors. Its dose is commonly limited by its nephrotoxicity, manifested as acute kidney injury (AKI). Erythropoietin (Epo) is a glycoprotein hormone that regulates the production of red blood cells. This study was performed to evaluate the presence of endogenous Epo in male Wistar rat urine and to analyse changes in urinary Epo levels in response to cisplatin- induced AKI. Dose-dependent studies and time-dependent experiments were performed to evaluate changes in urea nitrogen and creatinine in plasma as well as Epo, neutrophil gelatinase-associated lipocalin (NGAL), alkaline phosphatase (AP) activity, creatinine and total proteins in urine at 2 days post-dosing. Rats received 2, 5 or 10 mg/kg b.w., i.p. of cisplatin. At 5 mg/kg b.w., i.p. cisplatin, significant increases in urinary Epo were detected. Significant increases in urea nitrogen and creatinine in plasma, NGAL, AP, proteins, and Epo were observed in urine from rats that received 10 mg/kg b.w., i.p. of cisplatin. In the time-dependent experiments, rats were injected with a dose of 5 mg/kg b.w., i.p. of cisplatin, and sampling occurred 2, 4, and 14 days post-dosing. In these animals, there were significant increases in urea nitrogen and creatinine in plasma and total proteins, AP activity, Epo, and NGAL in urine on day 4. Urinary Epo was also detected on day 2. Taken together, these findings provide weight of evidence for urinary Epo as a promising early biomarker of cisplatin-induced AKI in male rats.

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Since 1997, Ecuador has undergone a series of changes to ensure family rights to sexual minorities. However, there is still limited research regarding attitudes toward them. This study focused on the attitudes toward lesbians (L), gay men (G), and their rights. A sample of 318 cisgender Ecuadorians who responded to an online survey was recruited. Analyses indicated that men, heterosexuals, who practice their religion, attend more frequently to religious services, and identify as conservative showed higher levels of prejudice against LG as well as less support toward their rights. Further, participants who did not have LG acquaintances, friends, family members, and those who did not know any LG parented family showed less support toward these populations. Multiple regression analyses indicated that believing that a person's sexual orientation is learned significantly predicted the attitudes measured in our study. Implications of these findings to help reduce prejudice against LG individuals are discussed.

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Titatinum dioxide nanoparticles (TiO2-NPs) are frequently used in several areas. Titanium alloys are employed in orthopedic and odontological surgery (such as hip, knee, and teeth implants). To evaluate the potential acute toxic effects of titanium pieces implantations and in other sources that allow the systemic delivery of titanium, parenteral routes of TiO2-NPs administration should be taken into account. The present study evaluated the impact of subcutaneous administration of TiO2-NPs on renal function and structure in rats. Animals were exposed to a dose of 50 mg/kg b.w., s.c. and sacrificed after 48 h. Titanium levels were detected in urine (135 ± 6 ηg/mL) and in renal tissue (502 ± 40 ηg/g) employing inductively coupled plasma mass spectrometry. An increase in alkaline phosphatase activity, total protein levels, and glucose concentrations was observed in urine from treated rats suggesting injury in proximal tubule cells. In parallel, histopathological studies showed tubular dilatation and cellular desquamation in these nephron segments. In summary, this study demonstrates that subcutaneous administration of TiO2-NPs causes acute nephrotoxicity evidenced by functional and histological alterations in proximal tubule cells. This fact deserves to be mainly considered when humans are exposed directly or indirectly to TiO2-NPs sources that cause the systemic delivery of titanium.

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RESUMEN Objetivo. Establecer la carga de enfermedad por mesotelioma maligno (MM) en Colombia entre 2015 y 2020 y su asociación con el índice sociodemográfico (SDI) subnacional y las localizaciones de asbesto. Métodos. Estudio ecológico mixto en la población colombiana con diagnóstico de MM según la CIE-10 durante 2015 a 2020. La carga global de enfermedad (GBD, por su sigla en inglés) se estimó por medio de la metodología propuesta de Murray y López a partir de la prevalencia y mortalidad obtenida de fuentes oficiales. Se estimó el SDI (por su sigla en inglés) subnacional (nivel departamental) como medida de desarrollo socioeconómico y se establecieron regresiones lineales con la GBD, el SDI y las localizaciones documentadas de asbesto. Resultados. La GBD estimada por MM en Colombia durante 2015-2020 fue de 51,71 años de vida ajustados por discapacidad (AVAD) por cada 1 000 000 de habitantes (15 375,79 AVAD totales), con predominio en personas mayores de 50 años (91,1%) y de sexo masculino (66,4%). A nivel departamental, Bogotá y Valle del Cauca presentaron la mayor cantidad de AVAD ajustados; mientras que Bogotá tuvo el SDI más alto, y Guainía y Cesar el más bajo. Se evidenció una asociación entre los AVAD y el SDI, donde este último explicó 22,8% de los casos de AVAD. Conclusión. El MM es causa de una gran cantidad de AVAD, con predominio en los departamentos con mayor desarrollo socioeconómico, y con presencia de empresas que solían utilizar asbesto; no obstante, el posible subdiagnóstico de MM limita el análisis de la información.

ABSTRACT Objective. Establish the disease burden of malignant mesothelioma (MM) in Colombia between 2015 and 2020, and its association with the subnational sociodemographic development index (SDI) and with asbestos sites. Methods. Mixed ecological study of the Colombian population diagnosed with MM (according to ICD-10) from 2015 to 2020. The global burden of disease (GBD) was estimated using the methodology proposed by Murray and Lopez, based on prevalence and mortality data obtained from official sources. The subnational (departmental level) SDI was estimated as a measure of socioeconomic development. Linear regressions were established with the GBD, SDI, and documented asbestos sites. Results. The estimated GBD of MM in Colombia during 2015-2020 was 51.71 disability-adjusted life years (DALYs) per 1 000 000 inhabitants (15 375.79 total DALYs), with predominance in people over 50 years of age (91.1%) and males (66.4%). Bogotá and Valle del Cauca were the departments with the highest number of adjusted DALYs. Bogotá had the highest SDI and Guainía and Cesar had the lowest. There was evidence of an association between DALYs and SDI, explaining 22.8% of DALYs. Conclusion. Malignant mesothelioma is the cause of a large number of DALYs, predominantly in the departments with greater socioeconomic development and with companies that used to use asbestos. However, possible underdiagnosis of MM limits analysis of the information.

RESUMO Objetivo. Estabelecer o ônus da doença por mesotelioma maligno (MM) na Colômbia entre 2015 e 2020 e sua associação ao índice sociodemográfico subnacional (ISS) e locais de amianto. Métodos. Estudo ecológico misto na população colombiana diagnosticada com MM, de acordo com a CID-10 durante 2015 a 2020. A carga global da doença (CGD) foi estimada usando a metodologia proposta por Murray e López com base na prevalência e na mortalidade obtidas de fontes oficiais. O SDI subnacional (nível departamental) foi estimado como uma medida de desenvolvimento socioeconômico e foram estabelecidas regressões lineares com CGD, SDI e localizações documentadas de amianto. Resultados. A estimativa de CGD por MM na Colômbia entre 2015-2020 foi de 51,71 anos de vida ajustados por incapacidade (AVAI) por 1 000 000 de habitantes (15 375,79 AVAI totais), com predominância em pessoas com mais de 50 anos (91,1%) e do sexo masculino (66,4%). Com relação aos departamentos, Bogotá e Valle del Cauca tiveram o maior número de AVAI ajustados, enquanto Bogotá teve o maior SDI, e Guainía e Cesar, o menor. Houve uma associação entre os AVAI e o SDI, sendo que o SDI foi responsável por 22,8% dos AVAI. Conclusões. O MM é a causa de um grande número de AVAI, predominantemente em departamentos com maior desenvolvimento socioeconômico e com a presença de empresas que usavam amianto; no entanto, o possível subdiagnóstico do MM limita a análise das informações.

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BACKGROUND: Worldwide prevalence of Oropharyngeal Squamous Cell Carcinoma (OPSCC) has increased, affecting mostly young males. OPSCC associated with Human Papillomavirus (HPV) infection exhibits particular characteristics in terms of response to treatment, hence HPV has been proposed as a prognostic factor. The impact of HPV positivity and associated biomarkers on OPSCC in the Mexican population has not been addressed. Therefore, the analysis of OPSCC prognostic markers in the Mexican population is necessary. METHODS: Retrolective study in Mexican OPSCC patients, where HPV prevalence, p16 and EGFR levels were assessed using INNO-LiPA and immunohistochemistry. RESULTS: We found an HPV prevalence of 57.6% in OPSCC cases treated at a reference center in Mexico. HPV and p16 positivity, as well as EGFR, associate with better outcomes in OPSCC patients, and they also promote reduced death risk. Notably, HPV presence and p16 positivity showed a significant association with disease-free survival (DFS), with a HR of 0.15 (p = 0.006) and a HR of 0.17 (p = 0.012), respectively, indicating a possible role as predictive biomarkers in Mexican OPSCC patients. CONCLUSIONS: Our results reflect the clinical utility of p16 analysis to improve overall survival (OS) and to predict recurrence in oropharyngeal cancer. These results position p16 and HPV as predictive biomarkers for OPSCC.

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Resumen. La ansiedad a la estadística se define como un conjunto de reacciones emocionales que generan incomodidad en el individuo, como preocupación excesiva, ideas intrusivas y tensión al asistir a una asignatura que involucre estadística o análisis estadísticos. Para su medición, se han diseñado distintos instrumentos; el más usado es la Statistical Anxiety Rating Scale (STARS). El objetivo del presente estudio fue adaptar y validar la escala STARS en una muestra colombiana para explorar sus propiedades psicométricas. Participaron 357 estudiantes universitarios con edades entre los 18 y 36 años (M= 19.19, DE = 1.87). Los resultados evidencian que las subescalas de la STARS muestran excelentes niveles de fiabilidad; el análisis factorial confirma la estructura de seis dimensiones y se reporta una validez concurrente importante. Se recomienda su uso para investigación y como herramienta para la toma de decisiones en procesos de acompañamiento académico en universidades.

Abstract. Statistics anxiety is defined as a set of emotional reactions that generate discomfort in the students, such as excessive worry, intrusive ideas and tension when they attending a course that involves statistics or statistical analysis. For its measurement, different instruments have been designed; the most used is the Statistical Anxiety Rating Scale (STARS). The objective of the present study was to adapt and validate the STARS in a Colombian sample to explore its psychometric properties. A total of 357 university students with ages between 18 and 36 years participated (X = 19.19, D.E. = 1.87). The results show that the subscales of the STARS show excellent levels of reliability; factor analysis confirms the six-dimensional structure and important concurrent validity is reported. It is recommended for research and as a tool for decision making in academic support processes in universities.

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Introducción. El hipertiroidismo es una condición heterogénea caracterizada por la producción excesiva de hormonas tiroideas. Su aparición en la edad pediátrica representa un reto diagnóstico y terapéutico. Objetivo. Describir las características clínicas y paraclínicas, así como la evolución y las diferencias entre las principales causas etiológicas de los pacientes con hipertiroidismo atendidos por el Servicio de Endocrinología Pediátrica del Hospital Universitario San Vicente Fundación en Medellín, Colombia, entre el 1° de julio de 2015 y el 30 de junio de 2020. Materiales y métodos. Se hizo un estudio observacional transversal con recolección retrospectiva de la información. Resultados. Se incluyeron 54 pacientes con una edad media de 11,9 años, 72,2 % de ellos mujeres. El 11,1 % tenía antecedentes familiares de enfermedad de Graves y 29,6 % de otras enfermedades tiroideas. El bocio fue la manifestación clínica más frecuente (83,3 %). El 92,6 % había recibido terapia con metimazol, el 79,6 % requirió betabloqueador y el 11,2 % necesitó una terapia farmacológica adicional. Se presentaron reacciones adversas a la medicación en el 16,7 %. En el 20,4 % de los pacientes hubo resolución del hipertiroidismo (espontánea: 9,3 %; posterior a la ablación con yodo radiactivo: 9,3 %, y después de la cirugía: 1,9 %). Conclusión. El hipertiroidismo es una enfermedad con manifestaciones clínicas diversas. La causa más frecuente es la enfermedad de Graves, seguida por la hashitoxicosis. En este estudio, la hashitoxicosis fue más frecuente que en estudios previos. La duración y los efectos secundarios del tratamiento farmacológico fueron similares a los reportados previamente, pero es de resaltar la mayor frecuencia de agranulocitosis en nuestra población.

Introduction: Hyperthyroidism is a heterogeneous condition characterized by the excessive production of thyroid hormones. It represents a diagnostic and therapeutic challenge. Objective: To describe the clinical and paraclinical characteristics and the evolution and differences between the main etiologies in patients with hyperthyroidism treated by the Pediatric Endocrinology Service at the Hospital Universitario San Vicente Fundación in Medellín, Colombia, between July 1st., 2015, and June 30th., 2020. Materials and methods: We conducted a cross-sectional observational study with retrospective data collection. Results: We included 54 patients with a mean age of 11.9 years, 72.2% of whom were female; 85.2% had no history of comorbidities related to autoimmunity; 11.1% had a family history of Graves' disease, and 29.6% of other thyroid diseases. Goiter was the most frequent clinical manifestation (83.3%) and 92.6% of the patients received treatment with methimazole, 79.6% required beta-blockers, and 11.2% additional drug therapy. Adverse drug reactions occurred in 16.7% of the patients and in 20.4% there was a resolution of hyperthyroidism (spontaneous: 9.3%; after radio-iodine ablation: 9.3%, and after surgery: 1.9%). Conclusion: Hyperthyroidism is a disease with diverse clinical manifestations. Its most frequent cause is Graves' disease followed by hashitoxicosis, which in this study had a higher frequency than that reported in the literature. The duration and side effects of pharmacological treatment were similar to those previously reported, but the higher frequency of agranulocytosis is noteworthy.

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