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5-Fluorouracil (5-FU) is an antineoplastic agent known for its low bioavailability and limited cellular penetration, often resulting in adverse effects on healthy cells. Thus, finding vehicles that enhance bioavailability, enable controlled release, and mitigate adverse effects is crucial. The study focuses on encapsulating 5-FU within soy lecithin vesicles (SLVs) and assessing its impact on the carrier's properties and functionality. Results show that incorporating 5-FU does not affect SLVs' size or polydispersity, even postlyophilization. Liberation of 5-FU from SLVs requires system disruption rather than spontaneous release, with an encapsulation efficiency of approximately 43% determined using Square Wave Voltammetry. Cytotoxicity assays on colorectal cancer cells reveal SLV-based delivery's significant efficacy, surpassing free drug solution effects with 45% cell viability after 72 h vs 73% viability. The research addresses 5-FU's limited bioavailability by creating a biocompatible nanocarrier for efficient drug delivery, highlighting SLVs as promising for targeted cancer therapy due to sustained antiproliferative effects and improved cellular uptake. The study underscores the importance of tailored drug delivery systems in enhancing therapeutic outcomes and suggests SLV/5-FU formulations as a potential advancement in cancer treatment strategies.

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Characterization studies of 1-butyl-3-methyl-imidazolium bis(2-ethylhexyl) sulfosuccinate vesicles at different pH values have been carried out by using liquid surface tension, transmission electron microscopy, and dynamic light scattering. The results show that there are no vesicle changes in its size and negative Z potential at pH 3, 6, and 10. Furthermore, indomethacin and 1-naphthol, both pH-dependent, electroactive, and fluorescence probes, were used to further characterize the bilayer employing electrochemical and emission techniques. The partition of indomethacin and 1-naphthol between the water and bilayer pseudophases only occurs for the neutral species and does not happen for the anionic species because the highly negative Z bilayer potential prevents incorporation due to negative repulsion. For the neutral species, the partition constant values were evaluated by square wave voltammetry and emission spectroscopy. Finally, for the indomethacin incorporated into the vesicle bilayer at pH 3, the release profile was monitored over time at pH 6. It was found that a change in the pH values causes the complete release of indomethacin after 25 min, which led us to think that the vesicles presented in this work can be used as a pH-sensitive nanocarrier for neutral pH-sensitive drugs.

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OBJECTIVE: the recommendations of the decisions made by the Tumor Board (TB) should be followed to identify barriers that may interfere with the execution of the previously decided, best care for the patient. The aim of this study is to assess whether the TB conduct decision was performed in patients with pancreatic tumors, their life status 90 days after the TB decision, and to analyze the reasons why the conduct was not performed. METHODS: we conducted a retrospective study with patients with pancreas tumors, evaluated between 2017 and 2019. We collected data on epidemiological status, whether the TB procedure was performed, the reason for not performing it, life status 90 days after the TB decision, and how many times each patient was discussed at a meeting. We compared categorical variables using the chi square test, numerical variables were presented as means and standard deviation. RESULTS: we studied 111 session cases, in 95 patients, 86 (90.5%) diagnosed with cancer. After 90 days of TB, 83 patients (87.37%) remained alive, 9 had (9.47%) died, and 3 (3.16%) were lost to follow-up. The TB decision was not observed in 12 (10.8%) cases and the reasons were: 25% (3) for loss of follow-up, 8.33% (1) for patient refusal, and 66.67% (8) due to clinical worsening. The cases of patients with metastases had a lower rate of TB conduct compliance (p=0.006). CONCLUSIONS: the TB conduct was performed in most cases and the most evident reason for non-compliance with the conducts is the patient's clinical worsening.

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Introduction: Previous studies have linked sleep to risk of diabetes and obesity, at least partially via alterations in food intake. Diabetes and obesity are common among Hispanics/Latinos, and studies are needed to better clarify the role of sleep in health among this group. Utilizing the revised TFEQ-R-18, this study will examine whether eating behaviors such as cognitive restraint, emotional eating and uncontrolled eating are related to self-reported sleep experiences. Specifically, we hypothesized that poor eating habits would be associated with (1) more insomnia symptoms, (2) overall worse sleep quality, (3) increased daytime sleepiness, and (4) shorter sleep duration.Methods: Data were collected from N = 100 adults (age 18-60, 47% female) of Mexican descent in the city of Nogales, AZ (34% not born in the US). Surveys were presented in English or Spanish. Eating Patterns were assessed with the Three-Factor Eating Questionnaire (TFEQ), which resulted in a total score and subscales for "cognitive restraint," "uncontrolled eating," and "emotional eating." Insomnia was assessed with the use of the Insomnia Severity Index (ISI), Sleepiness with the use of the Epworth Sleepiness Scale (ESS), Sleep quality with the use of the Pittsburgh Sleep Quality Index (PSQI), and weekday and weekend sleep duration with the use of the Sleep Timing Questionnaire (STQ). Covariates included age, sex, Body Mass Index (BMI), education and immigrant status.Results: Overall TFEQ score (problematic eating) was positively associated with greater insomnia, poorer sleep quality, more sleepiness, and less weekend (but not weekday) sleep. Mean TFEQ score in the sample was 18.7 (range 0-51). In adjusted analyses, every point on the TFEQ was associated with 0.6 ISI points, 0.8 PSQI points, 0.5 ESS points, and 1.1 minutes of less weekend sleep duration. Regarding subscale scores, relationships were generally seenbetween sleep and emotional eating and unrestricted eating, and not cognitive restraint.Conclusions: Greater insomnia, poorer sleep quality, increased daytime sleepiness and decreased weekend sleep duration were associated with eating patterns at the US-Mexico border, particularly in the area of unrestricted eating and emotional eating. This suggests possible mechanisms linking sleep and obesity in Hispanic/Latinos.

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ABSTRACT Objective: the recommendations of the decisions made by the Tumor Board (TB) should be followed to identify barriers that may interfere with the execution of the previously decided, best care for the patient. The aim of this study is to assess whether the TB conduct decision was performed in patients with pancreatic tumors, their life status 90 days after the TB decision, and to analyze the reasons why the conduct was not performed. Methods: we conducted a retrospective study with patients with pancreas tumors, evaluated between 2017 and 2019. We collected data on epidemiological status, whether the TB procedure was performed, the reason for not performing it, life status 90 days after the TB decision, and how many times each patient was discussed at a meeting. We compared categorical variables using the chi square test, numerical variables were presented as means and standard deviation. Results: we studied 111 session cases, in 95 patients, 86 (90.5%) diagnosed with cancer. After 90 days of TB, 83 patients (87.37%) remained alive, 9 had (9.47%) died, and 3 (3.16%) were lost to follow-up. The TB decision was not observed in 12 (10.8%) cases and the reasons were: 25% (3) for loss of follow-up, 8.33% (1) for patient refusal, and 66.67% (8) due to clinical worsening. The cases of patients with metastases had a lower rate of TB conduct compliance (p=0.006). Conclusions: the TB conduct was performed in most cases and the most evident reason for non-compliance with the conducts is the patient's clinical worsening.

RESUMO Objetivo: as recomendações das decisões em Tumor Board (TB) deveriam ser acompanhadas para identificar barreiras que possam interferir na execução do melhor cuidado para o paciente decidido previamente. O objetivo do estudo é avaliar se a decisão de conduta em TB foi realizada em pacientes com tumores pancreáticos, o status de vida 90 dias após TB e analisar os motivos pelos quais a conduta não foi realizada. Métodos: estudo retrospectivo com pacientes com tumores de pâncreas, avaliados entre 2017 a 2019. Dados epidemiológicos, se a conduta de TB foi realizada, o motivo da não realização, o status de vida em 90 dias após decisão de TB e quantas vezes cada paciente foi discutido em reunião foram coletados. As variáveis categóricas foram comparadas pelo teste de qui-quadrado; variáveis numéricas foram apresentadas como médias e desvio padrão. Resultados: 111 casos, 95 pacientes, 86 (90,5%) com diagnóstico de câncer. Após 90 dias de TB, 83 pacientes (87,37%) permaneceram vivos, 9 pacientes (9,47%) faleceram e 3 (3,16%) perderam o seguimento. A conduta do TB não foi realizada em 12 (10,8%) dos casos e os motivos foram: 25% (3) por perda de seguimento, 8,33% (1) por recusa do paciente e 66,67% (8) devido à piora clínica. Os casos de pacientes com metástases tiveram menor execução de conduta de TB (p=0,006). Conclusões: a conduta do TB é realizada na maior parte dos casos e o motivo mais evidente para o não cumprimento das condutas é a piora clínica do paciente.

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Resumen: Introducción: El dolor postoperatorio tiene un alto impacto, es una de las principales causas médicas de retraso en el alta hospitalaria. Asimismo, es causa frecuente de readmisión hospitalaria, retrasos en la recuperación y mayores costos para el sistema de salud y los pacientes. El objetivo del presente trabajo es conocer mejor la situación del dolor agudo postoperatorio en Latinoamérica mediante una revisión bibliográfica para poder establecer su prevalencia y evaluar su magnitud. Material y métodos: Se efectuó una búsqueda bibliográfica en SciELO y PubMed tratando de recopilar la información más detallada, precisa y actualizada. Resultados: En Latinoamérica la falta de políticas claras para la evaluación y el tratamiento del dolor postoperatorio, así como de formación, conduce a un control inadecuado del mismo con una prevalencia de dolor agudo postoperatorio moderado/severo superior a 40%. Conclusiones: El manejo del dolor agudo postoperatorio continúa siendo un problema en Latinoamérica. Muchos pacientes refieren dolor moderado o severo tras la cirugía, lo que puede conducir a dolor crónico. Se necesitan más estudios al respecto para poder establecer aún con mayor precisión la prevalencia del dolor agudo postoperatorio y los efectos derivados de su pobre control.

Abstract: Introduction: Postoperative pain has a profound impact. It is one of the main causes of delayed hospital discharge and it is associated with hospital readmission, recovery problems, and higher costs both for the healthcare system and the patients. The aim of this work is to shed light on the postoperative acute pain management in Latin America through a review of the literature, in order to have a better understanding of its prevalence and the extent of the problem. Material and methods: A bibliographical search was performed in SciELO and PubMed trying to gather the most precise, detailed and updated information. Results: In Latin America, the absence of clear policies for the evaluation and treatment of postoperative pain, as well as the lack of training, leads to its inadequate control with a prevalence of moderate/severe acute postoperative pain greater than 40%. Conclusions: Postoperative acute pain continues to be a problem in Latin America. Many patients still suffer moderate to severe pain after surgery, leading to a chronic or persistent painful condition. More studies are needed to get a clear picture of the prevalence of acute postoperative pain and the deleterious effects of an inadequate management.

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Sleep disparities exist among Hispanics/Latinos, although little work has characterized individuals at the United States (US)-Mexico border, particularly as it relates to acculturation. This study examined the association of Anglo and Mexican acculturation to various facets of sleep health among those of Mexican descent at the US-Mexico border. Data were collected from N = 100 adults of Mexican descent in the city of Nogales, Arizona (AZ). Surveys were presented in English or Spanish. Acculturation was assessed with the Acculturation Scale for Mexican-Americans (ARSMA-II). Insomnia was assessed with the Insomnia Severity Index (ISI), sleepiness was assessed with the Epworth Sleepiness Scale (ESS), sleep apnea risk was assessed with the Multivariable Apnea Prediction (MAP) index, weekday and weekend sleep duration and efficiency were assessed with the Sleep Timing Questionnaire, sleep quality was assessed with the Pittsburgh Sleep Quality Index (PSQI), and sleep duration and sleep medication use were assessed with PSQI items. No associations were found between Mexican acculturation and any sleep outcomes in adjusted analyses. Anglo acculturation was associated with less weekend sleep duration and efficiency, worse insomnia severity and sleep quality, and more sleep apnea risk and sleep medication use. These results support the idea that sleep disparities may depend on the degree of acculturation, which should be considered in risk screening and interventions.

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Introducción: La revascularización es un procedimiento actual para dientes necróticos con ápice inmaduro; supone una opción de manejo clínico más conservador con respecto a los tratamientos tradicionales de apicoformación, en el cual, por medio de la inducción de las células madre de la papila dental periapical, se crea un sangrado dentro del conducto radicular, el cual se convierte en un coágulo estable que permite la maduración fisiológica radicular, a la vez que el engrosamiento de las paredes del conducto. El objetivo de este tratamiento es permitir un cierre completo del ápice. Caso clínico: Se presenta el caso de un niño de 7 años de edad con abceso apical en el diente 21, se realiza un tratamiento de revascularización siguiendo la técnica descrita por Hoshino (1996) de apósitos intraconducto con alguna modificación. Siguiendo la teoría descrita por Iwaya en 2001, y Banchs y Trope en 2004, el canal casose desinfecta con abundante irrigación y se rellena con una combinación de pasta bi-antibiótica. Una vez que se completa el protocolo de desinfección, el ápice se irrita mecánicamente para iniciar el sangrado en el canal y producir un coágulo sanguíneo hasta el nivel de la unión cemento-esmalte, colocando Agregado Trióxido Mineral como barrera entre el coágulo y la restauración final. En este caso, la combinación de un canal desinfectado, una matriz en la que podría crecer tejido nuevo y un sello coronal efectivo parece producir el ambiente necesario para una revascularización exitosa. Conclusiones: Bajo las circunstancias de este caso, se puede concluir que el protocolo del tratamiento seguido (regeneración apical y tapón de MTA) es un tratamiento de éxito clínico para conseguir el cierre apical en dientes inmaduros. Este éxito también dependerá de variables como el material de desinfección radicular: el Cloruro Sódico seguido de una solución salina es capaz de desinfectar los conductos sin tener que instrumentar las débiles paredes dentinarias. El uso de pasta bi-antibiótica intracanal utilizada en el caso clínico previene de la pigmentación dental que provocan las tetraciclinas cuando se utilizan en la pasta tri-antibiótica. Se necesitan revisiones de control radiográfico cada 3 meses el primer año y anualmente hasta los 4 años de realizada la revascularización, para comprobar el éxito del tratamiento. Actualmente la regeneración tisular está enfocada hacia el desarrollo de sistemas de cultivo que permitan reproducir células embrionarias hacia tejidos dentales perdidos.

Introdução: A revascularização é um procedimento atual para dentes necróticos com ápice imaturo; É uma opção de gestão clínica mais conservadora em relação aos tratamentos tradicionais de apicificação, onde, através da indução das células-tronco da papila periapical, é criada uma hemorragia dentro do canal radicular, que se torna um coágulo estável que permite a maturação radicular fisiológica, ao mesmo tempo as paredes dos canais radiculares sofrem um espessamento. O objetivo deste tratamento é permitir o fechamento completo do ápice. Caso clínico: apresentamos o caso de um menino de 7 anos com um abscesso apical no dente 21, um tratamento de revascularização foi realizado seguindo a técnica descrita por Hoshino (1996) com alguma modificação. Seguindo a teoría descrita por Iwaya em 2001 e Banchs e Trope em 2004, usando na revascularização pasta bi-antibiótica e Agregado Trióxido Mineral como barreira entre o coágulo e a restauração final. Conclusões: nos últimos estudos publicados, o hidróxido de cálcio e a pasta tri-antibiótica foram utilizados como materiais de preenchimento entre as fases do tratamento. Mas estes foram substituidos por uma mistura bi-antibiótica. Como a sua eficácia contra o hidróxido de cálcio por si só não foi comprovada, este continua a ser utilizado como o único material intermediário entre as etapas do tratamento de revascularização. Com esta técnica, tentamos alcançar um desenvolvimento radicular completo e paredes mais espessas, evitando assim o problema da fratura radicular.

Introduction: Revascularization is a current procedure for necrotic teeth with an immature apex; It is a more conservative clinical management option with respect to traditional apicoformation treatments, where, through the induction of the stem cells of the periapical dental papilla, a bleeding is created inside the root canal, which becomes a stable clot that allows the physiological radicular maturation, at the same time as the thickening of the duct walls. The objective of this treatment is to allow a complete closure of the apex. Clinical case: The case of a 7-year-old boy with apical abscess on tooth 21 is presented, a revascularization treatment is performed following the technique described by Hoshino (1996). Following the theory described by Iwaya in 2001, and Banchs and Trope in 2004, using bi-antibiotic paste in the revascularization, and mineral trioxide aggregate as a barrier between the clot and the final restoration. Conclusions: In the last published studies, calcium hydroxide and tri-antibiotic paste have been used as filling materials between phases, to use a bi-antibiotic mixture. Its effectiveness against calcium hydroxide alone has not been proven, which is used again as the only intermediate material between the steps of the revascularization treatment. With this technique we try to achieve a complete root development and thicker walls, thus avoiding the problem of root fracture.

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Introducción: La necrosis del complejo areola-pezón constituye una de las complicaciones más temidas en mamoplastias. Se plantea que el uso de la tomosíntesis constituye el método ideal para la valoración del pedículo vascular, con el fin de establecer la mejor técnica quirúrgica, para evitar esta complicación. Objetivo: Evaluar la utilidad del uso de la tomosíntesis como parte del protocolo preoperatorio para mamoplastias, en el periodo enero de 2015 a diciembre de 2016. Métodos: El estudio es de tipo retrospectivo, descriptivo. La muestra fue de 67 pacientes, de las cuales dos fueron excluidas por no tener registro de todos los datos. Se realizó tomosíntesis y ultrasonido mamario al 100 % de las pacientes. Resultados: Solo una paciente presentó necrosis parcial del complejo areola-pezón. Conclusiones: El uso de la tomosíntesis por sí sola, como método de imagen en la evaluación preoperatoria de mamoplastias, ayuda a planificar la técnica quirúrgica por emplear y a disminuir las complicaciones.

Introduction: The necrosis of the nipple areola complex is one of the most feared complications in mammoplasties. We propose that the use of thomosynthesis constitutes the ideal method for the evaluation of the vascular pedicle, and thus determine the best surgical technique, in order to avoid this complication. Objective: To evaluate the usefulness of the use of thomosynthesis as part of the preoperative protocol for secondary mammoplasties, from January 2015 to December 2016. Methods: The study is a retrospective, descriptive study. The sample consisted of 67 patients, of whom two were excluded because they did not record all the data. Breast ultrasound and thomosynthesis were performed in 100% of the patients. Results: Only one patient presented partial nipple areola complex necrosis. Conclusions: The use of thomosynthesis alone as an imaging method in the preoperative evaluation of mammoplasties helps to plan the surgical technique to be used as well as to reduce complications

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This report describes the studies performed to determine the permeability coefficient value (P) of 1-naphthyl phosphate (1-NP) through the benzyl-hexadecyldimethylammonium 1,4-bis(2-ethylhexyl)sulfosuccinate (AOT-BHD) vesicle bilayer. 1-NP was added in the external phase and must cross the bilayer of the vesicle to react with the encapsulated enzyme (alkaline phosphatase) to yield 1-naphtholate (NPh-), the product of the enzymatic hydrolysis. This product is electrochemically detected, at basic pH value, by a square wave voltammetry technique, which can be a good alternative over the spectroscopic one, to measure the vesicle solutions because scattering (due to its turbidity) does not make any influence in the electrochemical signal. The experimental data allow us to propose a mathematical model, and a value of P = (1.00 ± 0.15) × 10-9 cm s-1 was obtained. Also, a value of P = (2.0 ± 0.5) × 10-9 cm s-1 was found by using an independent technique, ultraviolet-visible spectroscopy, for comparison. It is evident that the P values obtained from both the techniques are comparable (within the experimental error of both techniques) under the same experimental conditions. This study constitutes the first report of the 1-NP permeability determination in this new vesicle. We want to highlight the importance of the introduction of a new method and the electrochemical response of the product generated through an enzymatic reaction that occurs in the inner aqueous phase of the vesicle, where the enzyme is placed.

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