Manejo clínico de la apoplejía en macroadenoma hipofisario no funcionante durante el embarazo: Reporte de un caso

La apoplejía hipofisaria es un evento infrecuente, especialmente en el embarazo, con pocos casos reportados en la literatura. Se presenta secundario a infartos hemorrágicos por cambios vasculares en un tumor hipofisario. Se puede manifestar con cambios hormonales cuando es secundario a tumores funcionantes o con síntomas neurológicos cuando ejerce efecto de masa en el caso de los tumores no funcionantes. El diagnóstico es por sospecha clínica, principalmente ante síntomas que sugieren efecto masa con compromiso neurológico y visual. Estudios como pruebas de función hormonal y resonancia magnética del cerebro son herramientas para confirmar la patología. Se describe el caso de una paciente de 30 años con embarazo de 28 semanas que presentó cefalea asociado a síntomas visuales que progresaron durante la gestación, con diagnóstico de apoplejía hipofisaria se presenta el abordaje clínico y opciones de manejo que buscaron preservar la viabilidad fetal e integridad materna.  (provisto por Infomedic International)

Pituitary apoplexy is a rare event, especially in pregnancy, with few cases reported in the literature. It occurs secondary to hemorrhagic infarcts due to vascular changes in a pituitary tumor. It may manifest with hormonal changes when secondary to functioning tumors or with neurological symptoms when it exerts mass effect in the case of non-functioning tumors. The diagnosis is based on clinical suspicion, mainly in the presence of symptoms suggesting mass effect with neurological and visual involvement. Studies such as hormone function tests and brain MRI are tools to confirm the pathology. We describe the case of a 30-year-old patient with a 28-week pregnancy who presented headache associated with visual symptoms that progressed during gestation, with a diagnosis of pituitary apoplexy, the clinical approach and management options that sought to preserve fetal viability and maternal integrity are presented. (provided by Infomedic International)

Health risks associated with smoking versus injecting fentanyl among people who use drugs in California.

BACKGROUND: Given the attention, funding, and services that seek to reduce overdose mortality from fentanyl, it is important to understand whether a potential solution is for more people to switch from injecting to smoking fentanyl. As such, we set out to conduct a study to compare health and healthcare utilization outcomes associated with different modes of illicit fentanyl administration. METHODS: From January to February 2023, we recruited people who use drugs from 34 syringe services programs across California, USA (N=999) and surveyed their substance use, health outcomes, and healthcare utilization. We compared health risks among people who injected fentanyl (78% of whom also smoked) to people who solely smoked fentanyl (n=563). RESULTS: Of the 563 participants, forty-one percent injected fentanyl and 59% only smoked fentanyl. People who injected fentanyl were 40% more likely to have experienced a non-fatal overdose in the past 3 months (27% vs. 19%; aRR=1.40; 95% CI=1.03, 1.93) and 253% more likely to have had a skin and soft tissue infection in the past 3 months (39% vs. 15%; aRR=2.53; 95% CI=1.74, 3.67), compared to people who only smoked fentanyl. The average number of nights spent in the hospital was higher among people who injected fentanyl (average 1.2 nights vs. 0.7 nights; aIRR=1.78; 95% CI=1.02, 3.09; p=0.04).There were non-significant associations between mode of fentanyl administration and number of emergency department visits and probability of hospitalization. CONCLUSIONS: Findings suggested that people who injected fentanyl were at higher risk for overdose and skin and soft tissue infections than people who only smoked fentanyl. Distribution of safe smoking supplies may facilitate transitions from injecting to smoking fentanyl, thereby reducing health risks associated with fentanyl use.

Technical Implications of the Chicken Embryo Chorioallantoic Membrane Assay to Elucidate Neuroblastoma Biology.

The chorioallantoic membrane (CAM) can be used as a valuable research tool to examine tumors. The CAM can be used to investigate processes such as migration, invasion, and angiogenesis and to assess novel antitumor drugs. The CAM can be used to establish tumors in a straightforward, rapid, and cost-effective manner via xenotransplantation of cells or tumor tissues with reproducible results; furthermore, the use of the CAM adheres to the three "R" principle, i.e., replace, reduce, and refine. To achieve successful tumor establishment and survival, several technical aspects should be taken into consideration. The complexity and heterogeneity of diseases including neuroblastoma and cancers in general and their impact on human health highlight the importance of preclinical models that help us describe tumor-specific biological processes. These models will not only help in understanding tumor biology, but also allow clinicians to explore therapeutic alternatives that will improve current treatment strategies. In this review, we summarize the technical characteristics as well as the main findings regarding the use of this model to study neuroblastoma for angiogenesis, metastasis, drug sensitivity, and drug resistance.

Normal development of the heart: a review of new findings / Desarrollo normal del corazón: revisión de nuevos hallazgos

Abstract Development and formation of the heart, the central organ of the circulatory system in vertebrates, starts early during embryonic development (second week), reaching maturity during the first few postnatal months. Cardiogenesis is a highly complex process that requires the active and orderly participation of different cardiac and non-cardiac cell populations. Thus, this process is sensitive to errors that may trigger a variety of heart-development defects, called congenital heart defects, which have a worldwide incidence of 8-10/1000 live births. A good understanding of normal cardiogenesis is required for better diagnosis and treatment of congenital heart diseases. This article reviews normal cardiogenesis by comparing information from classic studies with more recent findings. Information from descriptive anatomical studies of histological sections and selective in vivo marking of chicken embryos were emphasized. In addition, the discovery of heart fields has fueled the investigation of cardiogenic events that were believed to be understood and has contributed to proposals for new models of heart development.

Resumen El corazón, órgano central del aparato circulatorio de los vertebrados, comienza a formarse muy temprano en el desarrollo embrionario (segunda semana de gestación) y alcanza su forma madura durante los primeros meses posteriores al nacimiento. La cardiogénesis se caracteriza por ser un proceso altamente complejo, dependiente de la participación activa y ordenada de diferentes poblaciones celulares cardiacas y no cardiacas. Lo anterior hace que este proceso sea sensible a errores que pueden desencadenar una variedad de defectos del desarrollo cardiaco, llamados cardiopatías congénitas, con una incidencia mundial de 8 a 10/1000 nacidos vivos. Para mejorar el diagnóstico y el tratamiento de las cardiopatías congénitas es necesario comprender adecuadamente los eventos implicados en la cardiogénesis normal. En este artículo se revisa el desarrollo cardiaco normal, contrastando la información de los estudios clásicos con la de hallazgos recientes. Se hace hincapié en la información obtenida de los estudios de anatomía descriptiva de cortes histológicos y marcaje selectivo in vivo en embriones de pollo. Adicionalmente, el descubrimiento de los campos cardiogénicos ha estimulado la investigación de eventos cardiogénicos que se creían comprendidos, contribuyendo con propuestas de nuevos modelos del desarrollo del corazón.

Stem-Loop Structures in Iron-Regulated mRNAs of Giardia duodenalis.

Giardia duodenalis is a significant cause of waterborne and foodborne infections, day-care center outbreaks, and traveler's diarrhea worldwide. In protozoa such as Trichomonas vaginalis and Entamoeba histolytica, iron affects the growth, pathogenicity mechanisms, and expression of virulence genes. One of the proposed iron regulatory mechanisms is at the post-transcriptional level through an IRE/IRP-like (iron responsive element/iron regulatory protein) system. Recently, the expression of many putative giardial virulence factors in the free-iron levels has been reported in subsequent RNAseq experiments; however, the iron regulatory mechanism remains unknown. Thus, this work aimed to determine the effects of iron on the growth, gene expression, and presence of IRE-like structures in G. duodenalis. First, the parasite's growth kinetics at different iron concentrations were studied, and the cell viability was determined. It was observed that the parasite can adapt to an iron range from 7.7 to 500 µM; however, in conditions without iron, it is unable to survive in the culture medium. Additionally, the iron modulation of three genes was determined by RT-PCR assays. The results suggested that Actin, glucosamine-6-phosphate deaminase, and cytochrome b5 mRNA were down-regulated by iron. To investigate the presence of IRE-like structures, in silico analyses were performed for different mRNAs from the Giardia genome database. The Zuker mfold v2.4 web server and theoretical analysis were used to predict the secondary structures of the 91 mRNAs analyzed. Interestingly, the iron-induced downregulation of the genes analyzed corresponds to the location of the stem-loop structures found in their UTR regions. In conclusion, iron modulates the growth and expression of specific genes, likely due to the presence of IRE-like structures in G. duodenalis mRNAs.

Incidence and risk factors of cardiovascular mortality in patients with gastrointestinal adenocarcinoma.

BACKGROUND: Gastrointestinal (GI) cancers are common and fatal. Improved cancer-directed therapies, with thier substantial role in improving cancer-specific survival, may increase non-cancer mortality-including cardiovascular mortality-in these patients. AIM: To identify the risk factors of cardiovascular mortality in GI adenocarcinoma patients. METHODS: Data of GI adenocarcinoma patients were gathered from the Surveillance, Epidemiology, and End Results database. We used Pearson's chi-square test to assess the relationships between categorical variables. We used the Kaplan-Meyer test in the univariate analysis and Cox regression test for the multivariate analysis. RESULTS: Among 556,350 included patients, 275,118 (49.6%) died due to adenocarcinoma, 64,079 (11.5%) died due to cardiovascular causes, and 83,161 (14.9%) died due to other causes. Higher rates of cardiovascular mortality were found in patients ≥ 50 years (HR, 8.476; 95% CI, 7.91-9.083), separated (HR, 1.27; 95% CI, 1.184-1.361) and widowed (HR, 1.867; 95% CI, 1.812-1.924), patients with gastric (HR, 1.18; 95% CI, 1.1-1.265) or colorectal AC (HR, 1.123; 95% CI, 1.053-1.198), and patients not undergone surgery (HR, 2.04; 95% CI, 1.958-2.126). Lower risk patients include females (HR, 0.729; 95% CI, 0.717-0.742), blacks (HR, 0.95; 95% CI, 0.924-0.978), married (HR, 0.77; 95% CI, 0.749-0.792), divorced (HR, 0.841; 95% CI, 0.807-0.877), patients with pancreatic AC (HR, 0.83; 95% CI, 0.757-0.91), and patients treated with chemotherapy (HR, 0.416; 95% CI, 0.406-0.427). CONCLUSIONS: Risk factors for cardiovascular mortality in GI adenocarcinoma include advanced age, males, whites, separated and widowed, gastric or colorectal adenocarcinoma, advanced grade or advanced stage of the disease, no chemotherapy, and no surgery. Married and divorced, and patients with pancreatic adenocarcinoma have a lower risk.

Factores etiológicos de abscesos periodontales: Una patología emergente. Informe de tres casos / Etiological factors of periodontal abscesses: an emerging pathology. A three-case report

Introducción: La presencia de abscesos periodontales es la tercera emergencia dental más frecuente (6%-14%). Objetivo: Reportar información sobre diferentes factores etiológicos de absceso periodontal en tres pacientes. Descripción de casos: Primer caso, mujer de 52 años quien acudió a consulta por sangrado espontáneo, al examen clínico se evidenció sangrado al sondaje (SS), presencia de bolsas periodontales (BP) y cálculos (C); como tratamiento se realizó raspado y alisado radicular (RAR), complementado con detoxificación con tetraciclina y tratamiento farmacológico posoperatorio. Segundo caso, hombre de 27 años quien acudió a consulta por agrandamiento de encía, se observó (SS), y (BP); se retiró la lesión y se realizó (RAR). Tercer caso, hombre de 21 años quien acudió a consulta de control, al examen clínico se evidenció presencia de cálculos en órganos dentarios y bolsas periodontales en órganos dentarios 16-17; se utilizó (RAR) complementado con detoxificación con tetraciclina y tratamiento farmacológico posoperatorio. Conclusión: La etiología del absceso periodontal en el primer y último caso se basó en la falta de profundidad durante el raspado y alisado radicular, y en el segundo estuvo relacionado a impactación de alimentos. El identificar la etiología permite determinar diagnóstico, pronóstico y tratamiento ideal.

Introduction: Periodontal abscesses are the third most frequent dental emergency (6%-14%). Objective: To describe different etiological factors of periodontal abscesses in three patients. Case description: The first case was a 52-year-old woman who sought treatment due to spontaneous bleeding. During the examination, she revealed bleeding on probing (BP), presence of periodontal pockets (PP), and calculi (C). Scaling and root planning (SRP) was performed as treatment, which was complemented with detoxification with tetracycline and postoperative pharmacological treatment. The second case was a 27-year-old man who came to the clinic due to gum enlargement and showed BP and PP. The lesion was treated and SRP was performed. Finally, the third patient was a 21-year-old male who sought a follow-up consultation. The clinical examination showed the presence of dental calculi and periodontal pockets in teeth 16 and 17. SRP complemented with detoxification with tetracycline and postoperative pharmacology were used as treatments. Conclusion: The etiology of the periodontal abscesses in the first and third cases was based on the lack of depth during root scaling and planning. The cause in the second case was effects of food. Identifying this etiology is useful to achieve proper diagnosis, prognosis and treatment of periodontal abscesses.

Outcomes of cardiac surgery with left atrial appendage occlusion versus no Occlusion, direct oral Anticoagulants, and vitamin K Antagonists: A systematic review with Meta-analysis.

Surgical left atrial appendage occlusion (LAAO) is being used increasingly in the setting of atrial fibrillation but has been associated with procedural complications. This systematic review and meta-analysis compared the outcomes of surgical LAAO with those of no LAAO and the use of direct oral anticoagulants (DOACs) and vitamin K antagonists (VKAs) using the PRISMA guidelines. A literature search was undertaken for relevant studies published between January 1, 2003, and August 15, 2021. Primary clinical outcomes were all-cause mortality, embolic events, and stroke. Secondary clinical outcomes included major adverse cardiac events (MACE), postoperative atrial fibrillation, postoperative complications, reoperation for bleeding, and major bleeding. There was a statistically significant 34% reduction in incidence of embolic events (odds ratio [OR] 0.66, 95% confidence interval [CI] 0.57-0.77, p < 0.001) and a significant 42% reduction in risk of MACE (OR 0.58, 95% CI 0.38-0.88, p = 0.01) in patients who underwent LAAO.Surgical LAAO has the potential to reduce embolic events and MACE in patients undergoing cardiac surgery for atrial fibrillation. However, complete replacement of DOACs and warfarin therapy with surgical LAAO is unlikely despite its non-inferiority in terms of minimizing all-cause mortality, embolic events, MACE, major bleeding, and stroke in patients on oral anticoagulation therapies.

Análisis de los métodos de detección de lesiones orales potencialmente malignas. Revisión sistemática tipo paraguas / Analysis of the detection methods for potentially malignant oral lesions. An umbrella systematic review

Resumen Propósito: determinar la efectividad de detección de lesiones orales potencialmente malignas de cuatro métodos por medio de revisión sistemática tipo paraguas. Fuente de los datos: la búsqueda fue realizada con bases de datos Pubmed y EBSCOhost. Restricción de los años 2013-2018. Estrategia de búsqueda: (early detection of cáncer) AND (mouth neoplasms), (early detection of cáncer) AND (diagnostic techniques and procedures), (mouth neoplasms) AND (diagnostic techniques and procedures). Selección de los estudios: fueron seleccionadas a través de lectura crítica y la lista de chequeo del formato PRISMA, aquellas revisiones sistemáticas cuyo objetivo sea evaluar la efectividad de al menos uno de los métodos de detección de lesiones orales potencialmente malignas, seis estudios cumplieron con los criterios de inclusión. Extracción de datos: mediante la realización de lectura crítica de las revisiones sistemáticas seleccionadas previamente. Resultado de síntesis de los datos: se determina la efectividad a través de la comparación de las medias de porcentajes de sensibilidad y especificidad. Las medias de sensibilidad y especificidad de Vizilite fueron de 81.31 y 25.4%, de Microlux DL de 82.63 y 69.52%, de azul de toluidina de 82.07 y 66.27% y de citología exfoliativa de 76.77 y 80.87%, respectivamente. Conclusiones: los métodos de detección de lesiones orales premalignas evaluados en el presente estudio requieren mayor respaldo de evidencia científica para validar su efectividad. El método con mayor eficacia es el Microlux/DL, debido a sus altos niveles de sensibilidad y especificidad.

Abstract Objective: to determine the effectiveness of four methods for detecting potentially malignant oral lesions through an umbrella systematic review. Source of data: the search was performed in the PubMed and EBSCOhost databases. Years of search limited to 2013-2018. Search strategy: (early detection of cancer) AND (mouth neoplasms), (early detection of cancer) AND (diagnostic techniques and procedures), (mouth neoplasms) AND (diagnostic techniques and procedures). Study selection: using critical reading and the PRISMA checklist, systematic reviews with the objective of evaluating the effectiveness of at least one of the detection methods for potentially malignant oral lesions were selected; six studies met the inclusion criteria. Data extraction: through critical reading of the previously selected systematic reviews. Results of data synthesis: effectiveness was determined by comparing the mean percentages of sensitivity and specificity. Vizilite's sensitivity and specificity means were 81.31 and 25.4%, Microlux DL's were 82.63 and 69.52%, toluidine blue's were 82.07 and 66.27%, and exfoliative cytology's were 76.77 and 80.87%, respectively. Conclusions: the detection methods for pre-malignant oral lesions evaluated in this study need greater scientific evidence to validate their effectiveness. The method with the greatest effectiveness is Microlux/DL, due to its high levels of sensitivity and specificity.

¿Quiste dentigero o ameloblastoma? Importancia del análisis histológico en el diagnóstico de estas patologías / Dentigerous cyst or ameloblastoma? importance of histological analysis in the diagnosis of these pathologies

El quiste dentígero y el ameloblastoma son patologías con poca sintomatología y características clínicas, las cuales son evidentes cuando las lesiones alcanzan dimensiones mayores y esto sucede cuando llevan un tiempo considerable de evolución, por lo cual son descubiertas generalmente en exámenes radiográficos de rutina. El presente artículo describe los hallazgos histológicos y su correlación clínico-patológica y radiográfica entre el quiste dentígero y el ameloblastoma, lo que permite un diagnóstico y un plan de tratamiento. Se presentan dos casos de pacientes masculinos, de 12 y 15 años, que asisten a consulta a la Facultad de Odontología de la Universidad de Cartagena en Colombia, por presentar tumefacción en zona de sínfisis mandibular y en zona de tercer molar inferior derecho. Se especifican hallazgos clínicos, radiográficos e histológicos. Para llegar a los diagnósticos de quiste dentígero y ameloblastoma se deben tener en cuenta todos los hallazgos del examen clínico y radiográfico, pero debe primar el dictamen del examen histopatológico para determinar un tratamiento adecuado. (AU)

Dentigerous cysts and ameloblastomas present with few symptoms, and clinical characteristics present when lesions reach larger dimensions following a considerable length of evolution, and thus, these lesions are often discovered in routine radiographic examinations. This study describes the histological findings and clinical, pathological, and radiographic correlations between dentigerous cysts and ameloblastomas which aid in diagnosis and treatment planning. Two male patients, aged 12 and 15, were attended at the Faculty of Dentistry of the Cartagena University in Colombia due to swelling at the mandibular symphysis and lower right third molar area. The clinical, radiographic and histological findings are described. Clinical and radiographic findings must be taken into account to diagnose dentigerous cysts and ameloblastomas, with histopathological examination providing the definitive diagnosis and allowing adequate patient management. (AU)

Angiolymphoid hyperplasia: report of an unusual case in the oral cavity / Hiperplasia angiolinfoide: reporte de un caso inusual en cavidad oral

Abstract Angiolymphoid hyperplasia with eosinophilia (ALHE) is a rare inflammatory disease of unknown origin, which may be asymptomatic or produce symptoms like pruritus, pain, or spontaneous bleeding, and which has no sex predilection. The treatment options are cryosurgery, pulsed dye laser, topical tacrolimus, surgery, curettage, and oral retinoids. Below is a report of a clinical case of angiolymphoid hyperplasia with eosinophilia in the oral cavity, as well as the treatment performed. This was a female patient who attended a stomatology and oral surgery clinic due to a localized lesion at the level of the vestibule between dental organs 11 and 12. Clinically, there was a nodular lesion of about 1 cm in diameter, located at the level of attached gingiva; it was asymptomatic on palpation and of unknown etiology. Angiolymphoid hyperplasia is an unusual pathology in the oral cavity; its etiology is unknown, and a definitive diagnosis should be made through histopathological examination and clinical signs.

Resumen La hiperplasia angiolinfoide con eosinofilia (HACE) es una enfermedad rara de origen desconocido, de carácter inflamatorio, que puede ser asintomática o presentarse con prurito, dolor o sangrado espontáneo, sin predilección por género. Las opciones de tratamiento son la criocirugía, el láser de colorante pulsado, el tacrolimus tópico, la cirugía, el curetaje y los retinoides orales. Se reporta un caso clínico de hyperplasia angiolinfoide con eosinofilia en cavidad oral, así como el tratamiento realizado. Paciente de sexo femenino, que acudió a consulta de estomatología y cirugía oral por presentar lesión localizada a nivel de vestíbulo entre órganos dentarios 11 y 12. Clínicamente se observó lesión nodular localizada en encía adherida de aproximadamente 1 cm de diámetro, asintomático a la palpación y de etiología desconocida. La hyperplasia angiolinfoide es una patología inusual en cavidad oral, de etiología desconocida, en la que el diagnóstico definitivo debe hacerse a través del examen histopatológico y los signos clínicos.

The Social Support Networks Scale (SSNS) for Family Caregivers of Children with Cancer: A Psychometric Evaluation.

Currently, information about the psychometric properties of the Social Support Networks Scale (SSNS) for family caregivers of children with cancer is not yet available; therefore, there is no empirical evidence of its validity and reliability to support its use in this population. The aim of this study is to determine a factorial model of the SSNS, estimate its internal consistency reliability, describe its distribution, and check its concurrent validity. A convenience sample of 633 family caregivers of children with cancer hospitalized in a National Institute of Health in Mexico City was collected. The SSNS, a sociodemographic variables questionnaire, and three instruments that evaluated family functioning, quality of life, and resilience were applied. The five-factor model had a poor data fit and lacked discriminant validity. The sample was divided. In a subsample of 316 participants, exploratory factor analysis suggested a four-factor model. When testing the four-factor model through confirmatory factor analysis, religious support was independent of family support, friend support, and lack of support. In the other subsample of 317 participants, the one-factor model for religious support had a good fit, and the correlated three-factor model, with the remaining factors, showed an acceptable fit. Reliability ranged from acceptable (Guttman's λ2 = 0.72) to good (λ2 = 0.88). Socio-family support and its three factors were correlated with family functioning, resilience, and quality of life. Religious support was correlated with four factors of resilience and quality of life. A scale of socio-family support with three factors and an independent scale for religious support are defined from the SSNS, and they showed internal consistency and construct validity.

Adaptación lingüística y psicométrica del Cuestionario de Estilos Atributivos Académicos (EAT-A) / Linguistic and psychometric adaptation of the Academic Attributional Style Questionnaire (EAT-A)

Resumen Antecedentes las atribuciones que los estudiantes hacen de sus resultados académicos pueden impactar en su rendimiento académico. Sin embargo, la medición de las atribuciones en este ámbito con frecuencia carece de evidencias de validez y confiabilidad. Objetivos: analizar la estructura factorial, validez convergente y confiabilidad de la adaptación para estudiantes mexicanos del Cuestionario de Estilos Atributivos Académicos (EAT-A). Método: participaron 557 estudiantes de ambos sexos, entre 15 y 19 años, de la Ciudad de México. Mediante el análisis factorial confirmatorio se sometió a prueba una estructura del EATA con siete factores y otra con cuatro que no distingue las atribuciones de éxito y fracaso. Se analizó la validez convergente, la consistencia interna y la confiabilidad compuesta del instrumento. Resultados: solo la estructura con siete factores presentó ajuste adecuado, con los índices RMSEA = .046; SRMR = .053; CFI = .961; TLI = .952 y χ²/gl = 2.72. El EAT-A muestra evidencias de validez convergente con la motivación de logro y de confiabilidad. Conclusión: El EAT-A se muestra como un instrumento de medida breve y fácil aplicación que dispone de evidencias de validez y estimación de confiabilidad para examinar las atribuciones que los estudiantes hacen de sus calificaciones.

Abstract Background Students' attributions of their grades may affect their academic performance. However, lack of evidence supporting the validity and reliability of the instruments measuring attribution is a major concern. Objective: To analyze the factor structure, convergent validity and reliability of the Academic Attributional Style Questionnaire adapted to Mexican high school students (EAT-A). Method: The sample consisted of 557 Mexico City students of both sexes aged between 15 and 19. Using a confirmatory factor analysis for both success and failure attributions, a 7-factor structure and a 4-factor structure of the EAT-A were tested. The instrument's convergent validity, internal consistency and reliability were examined. Results: Only the 7-factor structure showed adequate fit indices: RMSEA = .046; SRMR = .053; CFI = .961; TLI = .952 and χ²/gl = 2.72. In addition, the EAT-A evidenced convergent validity concerning success and reliability motivation. Conclusion: The EAT-A is a quick- and easyto- administer instrument for measuring students' attributions of their grades in a reliable and valid manner.

El miedo es contagioso: menoscabos por una pandemia / Fear is contagious: impairment of a pandemic

En los últimos meses la población del mundo ha estado sometida por la pandemia de COVID-19 a un reto emocional causado por el riesgo de pérdida de la salud (incluida la muerte) y del riesgo real o potencial de la alteración de la estabilidad socioeconómica personal y global. Por otro lado, los individuos reciben diariamente información de diversa valía en relación a veracidad y oportunismo, lo que los expone a incertidumbre respecto a la toma de decisiones relacionadas con el bienestar o asociadas con aspectos laborales y productivos. Debe observarse que esto está sucediendo con: pacientes, empleados, proveedores y profesionistas en el modelo odontológico. El miedo es la respuesta prevalente que induce este conjunto de estímulos amenazantes, en el que de manera secundaria se manifiestan otros estados emocionales, sentimentales y de conducta. Contrarrestar el miedo en todos los actores del concepto práctica dental debería ser la estrategia en la recuperación de la actividad odontológica en esta nueva realidad, siendo la palabra clave, seguridad; misma que no debe estar representada exclusivamente por la implantación de medidas sanitarias, también de manera muy principal por la comunicación y la estimulación positiva de emociones y sentimientos que alcancen la mente afectiva no sólo de los pacientes, sino también de los miembros del grupo de trabajo ­mente inconsciente­(AU)

In recent months the world's population has been exposed by the pandemic advent of COVID-19 to an emotional challenge caused by the risk of health disturbance, death encompassed, and the real or latent risk of disruption of personal and global socioeconomic steadiness. Individuals on the other hand, receive day-to-day information of varying connotation in relation to truthfulness and opportunism, exposing them to decision-making uncertainty regarding welfare, as well employment and productive subjects. At the dental scheme, this is happening with: patients, employees, providers and professionals themselves. The widespread reaction that brings this myriad of threatening stimuli is fear, where other emotional, sentimental and behavioral expressions, secondarily occur. In this new reality, disparate the fear in all and any participant of the dental practice concept should be the strategy applied for dental activity recovering; being the key word, safety. Concept that should not be represented exclusively by the implementation of sanitary actions and warnings, but in a conspicuous manner by communication of this safety concept and the induction of positive stimuli by means of emotions and feelings that could reach the affective mind of patients, and the working group ­unconscious mind­ (AU)

Propuesta del modelo para control de infecciones en la consulta odontológica ante la pandemia de COVID-19 / Proposal for an infection control protocol in the dental consultation against the COVID-19 pandemic

Catalogada su labor como Servicios de Salud Indispensables, el profesional de la odontología se ha mantenido al pendiente de sus pacientes durante la pandemia de COVID-19, brindando atención de urgencia a quien lo solicita. A su regreso a la práctica típica, el odontólogo encontrará un entorno distinto o NUEVA NORMALIDAD, viéndose obligado a hacer modificaciones clínicas pertinentes y preparar a su equipo de trabajo para continuar brindando atención de calidad con un margen de seguridad amplificado, que de igual manera proteja a pacientes y al equipo de trabajo. Ante la falta de una vacuna que brinde protección y de tratamiento específico contra el SARS-CoV-2 (COVID-19), elevar el nivel de control de infecciones en el consultorio se vuelve ineludible y posiblemente irreversible en el quehacer odontológico cotidiano. En este artículo se propone un Protocolo de Control de Infecciones en la consulta odontológica que permita brindar seguridad en la atención bucal, considerando COVID-19, útil también para control infeccioso de otros patógenos virales o bacterianos (AU)

Considered dentistry as an Indispensable Health Services, during the COVID-19 pandemic the dental professional has been providing mostly emergency care. Upon return to typical dental practice, the dentist will find a different environment or NEW NORMALLY, being forced to make relevant clinical modifications and prepare his team to continue providing quality care with an amplified safety margin, which equally protects patients and dental team. In the absence of an available vaccine that provides protection or a specific treatment against SARSCoV- 2 (COVID-19), raising the level of infection control at the dental office will become unavoidable and possibly irreversible in the future quotidian dental work. This article proposes an Infection Control Protocol for the dental consultation that allows provide safety oral care, considering COVID-19, also useful for other viral or bacterial pathogens control (AU)

Iron-modulated virulence factors of Entamoeba histolytica.

Entamoeba histolytica is a human parasite that causes amoebiasis, a disease that affects the colon and liver and is prevalent worldwide. This protozoan requires a high concentration of iron to survive and reproduce. Iron modulates the expression of parasite virulence factors, including hemoglobinases, hemoglobin-binding proteins and cysteine proteases, as well as proteins related to the amoebic cytoskeleton. This review summarizes the virulence factors that are affected by iron, resulting in upregulation or downregulation of E. histolytica genes. This review also discusses the functionality of iron in the mechanisms of pathogenesis.

Validez de constructo de la versión corta de la Escala de Desregulación Emocional para niños y adolescentes / Construct Validity of the Emotional Dysregulation Scale, Short Form, for Children and Adolescents / Validade de constructo da versão curta da Escada de Desregulação Emocional para crianças e adolescentes

Objetivo. Someter a prueba el modelo unidimensional de la Escala de Desregulación Emocional, versión corta (EDS-short) para niños y adolescentes; examinar su invariancia entre sexos y edades; e indagar acerca de su validez convergente. Método. Mediante un muestreo intencional participaron, en un estudio y su réplica, 407 y 546 menores, respectivamente, quienes respondieron la EDS-short y la subescala de afecto negativo de la Positive and Negative Affect Scale para niños. Se empleó el análisis factorial confirmatorio para analizar la estructura unidimensional de la EDS-short y se examinó la asociación entre la desregulación emocional y el afecto negativo por medio de la correlación de Pearson. Resultados. En ambos estudios, el modelo unidimensional mostró un ajuste adecuado (x² / gl <= 2.76; RMSEA < 0.06; CFI = 0.99; IFI = 0.99; NFI = 0.98; NNFI = 0.99), así como invariancia entre mujeres y hombres y entre niños y adolescentes (ACFI = 0.00). Hubo asociación positiva y moderada entre la desregulación emocional y el afecto negativo (r > 0.57). Conclusión. La EDS-short posee un modelo de medida unidimensional y validez convergente. Se recomienda como una medida viable de la desregulación emocional de niños y de adolescentes.

Objective. The aims of this research were to test the unidimensional model of the Emotional Dysregulation Scale, short form (EDS-short), for children and adolescents, to examine its invariance across sex and age, and to investigate its convergent validity. Method. By intentional sampling, 407 and 546 young people answered the EDS-short and the Negative Affect subscale of the Positive and Negative Affect Scale for Children in a first study and its replication, respectively. Confirmatory factor analysis was used to analyze the unidimensional structure of the EDS-short, and Pearson correlation was used to examine the association between emotion dysregulation and negative affect. Results. In both studies the unidimensional model showed an adequate fit (x² / gl < 2.76; RMSEA < 0.06; CFI = 0.99; IFI = 0.99; NFI = 0.98; NNFI = 0.99), as well as invariance between girls and boys, and children and adolescents (ACFI = 0.00). A positive and moderate relation between emotion dysregulation and negative affect was found (r > 0.57). Conclusion. The EDS-short has a unidimensional measurement model and convergent validity. It is recommended as a viable measure of child and adolescent emotional dysregulation.

Escopo. Os propósitos de esta pesquisa foram someter a prova o modelo unidimensional da Escada de Desregulação Emocional, versão curta (EDS-short), para crianças e adolescentes, examinar sua não variação entre sexos e idades e indagar sobre sua validade convergente. Metodologia. Mediante uma amostra intencional participaram, em um estudo e sua réplica, 407 e 546 menores, respetivamente, os quais responderam a EDS-short e a sub-escada de afeto negativo da Positive and Negative Affect Scale para crianças. Foi empregada a análise fatorial confirmatória para analisar a estrutura unidimensional da EDS-short e foi examinada a associação entre a desregulação emocional e o afeto negativo por médio da correlação de Pearson. Resultados. Em ambos os estudos o modelo unidimensional mostrou um ajuste adequado (x² / gl 2.76; RMSEA < 0.06; CFI = 0.99; IFI = 0.99; NFI = 0.98; NNFI = 0.99), assim como uma não variação entre homens e mulheres e entre crianças e adolescentes (ACFI = 0.00). Existiu uma associação positiva e moderada entre a desregulação emocional e o afeto negativo (r > 0.57). Conclusão. A EDS-short tem um modelo de medida unidimensional e validade convergente. É recomendada como uma medida viável da desregulação emocional de crianças e adolescentes.

Mutaciones heterocigóticas en el gen de la α -galactosidasa A en dos pacientes con ACV criptogénico / α -galactosidase A Heterozygous mutations gene in two patients with cryptogenic stroke

RESUMEN La enfermedad de Fabry es una enfermedad genética con herencia ligada al cromosoma X recesiva, en la que se encuentra afectada la actividad de la enzima lisosomal a-galactosidasa A (GLA), con acumulación de diferentes metabolitos como la globotriaosilceramida (GL 3) y la globotriaosilceramida deacilada (liso GL 3), responsables de la disfunción multiorgánica y de las diversas manifestaciones fenotípicas, comprometiendo principalmente: sistema nervioso, piel tracto gastrointestinal, corazón y riñón. La manifestación neurológica más temprana es el dolor neuropático, sin embargo se pueden encontrar síntomas gastrointestinales, en piel y ojo, mientras que el daño renal y cardiaco se presentan como manifestaciones tardías al igual que el ataque cerebrovascular (ACV) que se presenta en la adultez. A continuación presentamos dos casos clínicos de pacientes con ACV criptogénico con mutaciones hetero-cigotas en el gen de la a-galactosidasa A

SUMMARY Fabry's disease is a recessive X linked genetic disorder in which lysosomal enzyme alpha-galactosidase A activity is affected, with accumulation of different kind of metabolites such as globotriaosylceramide and the deacylated globotriaosylceramide which are responsible for the multi-organ dysfunction that is seen in this disease, and also of the several phenotypic manifestations, mainly in nervous system, skin, gastrointestinal tract, heart and kidney. Earlier neurological manifestation is neuropathic pain could finding also gastrointestinal tract, skin and eye complaints while Cardiac and renal damage present later like as cerebrovascular disease which presents in adulthood. Two clinical cases of young patients with cryptogenic stroke with heterozygous mutations for Fabry's disease are presenting below.

Iron responsive-like elements in the parasite Entamoeba histolytica.

In Entamoeba histolytica, iron modulates virulence and gene expression via unknown regulatory mechanisms. The existence of a posttranscriptional iron regulatory system parallel with the iron-responsive element (IRE)/iron regulatory protein (IRP) system in the protozoan Trichomonas vaginalis has recently been reported. Due to their evolutionary closeness and the importance of iron for growth and virulence in these protozoa, we hypothesized the existence of an IRE/IRP-like mechanism in E. histolytica. To determine the presence of IRE-like elements in some mRNAs from this parasite, we performed in silico analyses of the 5'- and 3'-UTRs of mRNAs encoding virulence factors and cytoskeleton, ribosomal and metabolism proteins. The Zuker mfold software predicted IRE-like secondary structures in 52 of the 135 mRNAs analysed. However, only nine structures shared sequence similarity with the apical loop sequence (CAGUGN) of the previously reported human IRE-ferritin, whereas the GUU/UUG protozoan-specific motif was detected in 23 stem-loop structures. A new motif, AUU/AUUU, was also observed in 23 structures, suggesting the possible existence of an amoeba-specific motif. Additionally, cross-linking and RNA electrophoretic mobility shift assays showed specific RNA-protein interactions, using as a model two amoebic IRE-like elements from iron-regulated mRNAs and HeLa, T. vaginalis and E. histolytica cytoplasmic proteins. Our data suggest the presence of a posttranscriptional iron regulatory IRE/IRP-like mechanism in E. histolytica.