Validation of mutated CEBPA bZIP as a distinct prognosis entity in acute myeloid leukemia: a study by the Spanish PETHEMA registry.

Not available.

Antimicrobial and Cytotoxic Effect of Positively Charged Nanosilver-Coated Silk Sutures.

Sutures are a crucial component of surgical procedures, serving to close and stabilize wound margins to promote healing. However, microbial contamination of sutures can increase the risk of surgical site infections (SSI) due to colonization by pathogens. This study aimed to tackle SSI by synthesizing positively charged silver nanoparticles (P-AgNPs) and using them to produce antimicrobial sutures. The P-AgNPs were reduced and stabilized using polyethylenimine (PEI), a cationic branched polymer. The physiochemical characteristics of P-AgNPs were confirmed from the surface plasmon resonance (SPR) peak at 419 nm, spherical morphology with a particle size range of 8-10 nm, PEI functional groups on NPs, a hydrodynamic diameter of 12.3 ± 2.4 nm, and a zeta potential of 31.3 ± 6 mV. Subsequently, the surfaces of silk sutures were impregnated with P-AgNPs at different time intervals (24, 48, and 96 h) using an ex situ method. Scanning electron microscopy (SEM) and tensile strength studies were conducted to determine the coating and durability of the NP-coated sutures. The NPs were quantified on sutures using inductively coupled plasma optical emission spectrophotometry (ICP-OES), which was in the range of 1-5 µg. Primarily, antimicrobial activity was studied using three microorganisms (Candida albicans, Streptococcus mutans, and Staphylococcus aureus) for both P-AgNPs and suture-coated P-AgNPs using the agar diffusion method. The results showed that only the NPs and NP-coated sutures exhibited enhanced antimicrobial effects against bacteria and fungi. Finally, the cytotoxicity of the sutures was investigated using stem cells from the apical papilla (SCAPs) for 24 h, which exhibited more than 75% cell viability. Overall, the results indicate that NP-coated sutures can potentially be used as antimicrobial sutures to diminish or inhibit SSI in postoperative or general surgery patients.

An in vitro evaluation of e-vapor products: The contributions of chemical adulteration, concentration, and device power.

Homemade e-liquids and power-adjustable vaping devices may carry higher risks than commercial formulations and fixed-power devices. This study used human macrophage-like and bronchial epithelial (NHBE) cell cultures to investigate toxicity of homemade e-liquids containing propylene glycol and vegetable glycerin (PG/VG), nicotine, vitamin E acetate (VEA), medium-chain fatty acids (MCFAs), phytol, and cannabidiol (CBD). SmallAir™ organotypic epithelial cultures were exposed to aerosols generated at different power settings (10-50 W). Carbonyl levels were measured, and endpoints reflecting epithelial function (ciliary beating frequency [CBF]), integrity (transepithelial electrical resistance [TEER]), and structure (histology) were investigated. Treatment with nicotine or VEA alone or with PG/VG did not impact cell viability. CBD, phytol, and lauric acid caused cytotoxicity in both culture systems and increased lipid-laden macrophages. Exposure of SmallAir™ organotypic cultures to CBD-containing aerosols resulted in tissue injury and loss of CBF and TEER, while PG/VG alone or with nicotine or VEA did not. Aerosols generated with higher power settings had higher carbonyl concentrations. In conclusion, the presence and concentration of certain chemicals and device power may induce cytotoxicity in vitro. These results raise concerns that power-adjustable devices may generate toxic compounds and suggest that toxicity assessments should be conducted for both e-liquid formulations and their aerosols.

Prevalencia de las cardiopatías congénitas en relación con la altura sobre el nivel del mar en una región de Colombia / Prevalence of congenital heart disease in relation to height above sea level in a region of Colombia

Resumen Introducción: Las cardiopatías congénitas son los trastornos congénitos más frecuentes en la población mundial, se manifiestan generalmente después del nacimiento. Las altitudes entre 2,500 y 3,500 metros sobre el nivel del mar se han relacionado con la alta incidencia de cardiopatías congénitas como el ductus arterioso persistente, los defectos del septum auricular y los defectos del septum ventricular. Objetivo: Caracterizar clínica y sociodemográficamente los pacientes con diagnóstico de cardiopatías congénitas procedentes de altitudes bajas, moderadas y altas en un hospital regional de Colombia. Metodología: Estudio observacional, descriptivo retrospectivo. Se incluyeron todos los pacientes menores de 18 años con diagnóstico de cardiopatías congénitas, atendidos en el Hospital Universitario San Rafael de Tunja entre el 2015 y 2021. Resultados: El 51.9% de los pacientes eran de sexo masculino, el 16.3% tenían antecedente de prematurez y el 9.1% tenían diagnóstico de síndrome de Down. Las cardiopatías más frecuentes fueron: ductus arterioso persistente (35.1%), seguido de comunicación interventricular (21.6%) y comunicación intrauricular (19.7%). Conclusiones: Se deben establecer estrategias como el tamizaje y diagnóstico oportuno de las cardiopatías congénitas en poblaciones de riesgo con el fin de mejorar el pronóstico de vida de los pacientes y desenlace de la enfermedad.

Abstract Introduction: Congenital heart diseases are the most common congenital disorders in the world population, they generally manifest after birth. Altitudes between 2,500-3,500 meters above sea level have been linked to the high incidence of congenital heart diseases such as patent ductus arteriosus, atrial septum defects, and ventricular septum defects. Objetives: To characterize clinically and sociodemographically the patients diagnosed with congenital heart disease from low, moderate and high altitudes in a regional hospital in Colombia. Methodology: Observational, descriptive retrospective study. All patients under 18 years of age with a diagnosis of congenital heart disease, treated at the San Rafael de Tunja University Hospital between 2015 and 2021, were included. Results: 51.9% of the patients were male, 16.3% had a history of prematurity and 9.1% had a diagnosis of Down syndrome. The most frequent heart diseases were: persistent ductus arteriosus 35.1%, followed by ventricular communication representing 21.6% and intra-atrial communication with 19.7%). Conclusions: They must eestablish strategies such as screening and timely diagnosis of congenital heart disease in at-risk populations in order to improve the life prognosis of patients and the outcome of the disease.

Efficacy of a comprehensive strategy for the detection and treatment of hepatitis C infection in a population attending addiction centers.

Background and aims: The burden hepatitis C infection in people with history or current drug use suppose a high risk of hepatic complications and transmission infectious disease. This population is poor linked to heath system and is difficult to achieve them and support treatment because they have high rates of lost follow-up. Our aim was to evaluate an intervention for the diagnosis and treatment of chronic hepatitis C and HIV in this population. Methods: Six-hundred and eighty-three people attended in Drugs and Addictions Centers (DAC) were asked to participate in health counseling and provide blood sample for test HCV, HIV, and syphilis from April 2019 to June 2020. Totally 556 subjects were surveyed and tested. All of them were assigned to a patient navigation program to improve health education and linking to the sanitary system. Hepatitis C infection patients were evaluated in an ampliated medical consult to evaluate hepatic stage with transient liver elastography and initiated Direct Acting Antivirals to achieve Sustained Viral Response. Results: Of the 556 patients who agreed to participate in the study, 33 (5.9%) had active HCV infection. Of the 33 patients infected with HCV, three were lost to follow-up once the diagnosis of HCV infection was made. Twenty-eight patients (93.3%) completed treatment and 26 achieved Sustained Viral Response (78.8%). Of the 30 patients, seven (23.3%) had advanced fibrosis, and of these, four (16.6%) had liver cirrhosis. One of the cirrhotic patients had hepatic space-occupying lesions at the baseline evaluation and was diagnosed with hepatocarcinoma. Conclusions: Our study suggests that the implementation of strategies based on personalized intervention models can contribute to the control of HCV infection in DAC users.

State-of-the-art: MXene structures in nano-oncology.

Cancer nanomedicine has been investigated widely and boomed in the last two decades, resulting in designing nanostructures with biofunctionalization, giving rise to an "All-in-One" multifunctional platform. The development of rational design technology with extended functionalities brought interdisciplinary researchers to work continuously, aiming to find a prevent or effectively treat the deadly disease of the century. Thus, it led to some Food and Drug Administration (FDA)-approving nano-based formulations for cancer treatment and opening a vast area of promising discoveries by exploiting different nanomaterials. Two-dimensional (2D) materials have recently gained tremendous interest among scientists because of their outstanding structural, optical, electronic, thermal, and mechanical characteristics. Among various 2D nanomaterials, MXenes are a widely studied nanosystem because of their close similarity to graphene analogs. So, it is synthesized using multiple approaches and exploits their inherited properties. But in most cases, surface functionalization techniques are carried out for targeting, site-specific drug clearance, renal clearance, and biocompatible with healthy cells. Thus, fabricating a multimodal agent for mono or combined therapies is also an image-guided diagnostic agent. This review will explain the recent and emerging advancements of MXenes-based composites as a multifunctional theragnostic agent and discuss the possibilities of transferring laboratory research to clinical translation.

Cancer screening educational interventions in rural and farmworker communities: a systematic literature review.

OBJECTIVES: Men and women living in rural communities of the United States (US) are less likely than those in urban or suburban communities to be up to date with cancer screenings. Delayed screening contributes to later stage at diagnosis and higher cancer mortality for individuals living in rural areas. These effects may be compounded in some rural subpopulations (e.g. migrant and seasonal farmworkers). This systematic review examines educational interventions aimed at increasing colorectal, breast, prostate, oral, and/or cervical cancer screening in the rural US, with special consideration for the farmworker subpopulation. DESIGN: Using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines, our systematic literature review employed the following databases: Ovid MEDLINE, CINAHL Complete, Embase, and Web of Science. Search terms included, but were not limited to 'rural,' 'cancer screening,' 'farmworker,' and 'cancer prevention.' Eligible studies featured an educational intervention implemented in agricultural or rural US settings with a cancer screening behavioral outcome, male and/or female participants, and were published in English between 2002 and 2020. Article screening and data extraction were conducted by two independent reviewers. RESULTS: Twenty-six articles were eligible. Of the six studies focused on the farmworker population (n=2,732), 61.75% of participants reported Hispanic ethnicity. Of the sixteen studies on unspecified rural communities reporting participant race/ethnicity (n=10,442), 39.29% reported Black/African American race. Efficacious interventions included culturally-targeted educational materials, lay health advisors (LHAs), and components that addressed practical barriers (e.g. financial or logistical). CONCLUSION: Results demonstrate the value of LHAs and targeted education to increase screening for multiple cancer types in rural communities. Prospective research should incorporate and facilitate access to screening and provider-level and/or organizational-level interventions to increase overall impact. ABBREVIATIONS: HPV: human papillomavirus; LHA: lay health advisors; MeSH: Medical Subject Headings; PRISMA: Preferred Reporting Items for Systematic Reviews and Meta-Analyses; RCT: randomized controlled trial; US: United States.

Physicians' attitudes and perceived barriers to adherence to the national breast cancer clinical practice guidelines in Mexico: a survey study.

BACKGROUND: Adherence to clinical practice guidelines improves outcomes for patients with breast cancer. However, their implementation may not be feasible in low- and middle-income countries. This study aimed to evaluate physicians' adherence, attitudes, and barriers towards the Colima Consensus, which is the Mexican national breast cancer clinical practice guideline. METHODS: A cross-sectional, 31-item survey was e-mailed to Consensus attendees and members of the Mexican Society of Oncology and Mexican Mastology Association. Descriptive statistics, univariate, and multivariate analysis were used to analyze the associations between participants' characteristics, adherence, attitudes, and barriers. RESULTS: Of 439 respondents, 78% percent adhered to Consensus recommendations and 94% believed it was applicable to their clinical practice. Forty percent reported using the Consensus as their sole breast cancer guideline. This was associated with being a surgical oncologist (OR 3.3, 95% CI 2.0-5.3) and practicing at a public hospital (OR 2.1, 95% CI 1.2-3.7). The most common barriers to adherence were lack of resources and logistical problems. Regarding attitudes towards the Consensus, 90% considered it a good educational tool, 89% considered it a reliable source of information, and 90% thought it improved quality of care. CONCLUSIONS: We showed high levels of adherence and positive attitudes towards the Colima Consensus, with a significant proportion of physicians using it as their only guideline. Lack of resources and logistical issues were the main barriers to adherence. Our results highlight the relevance of local breast cancer guidelines and suggest a need for the creation of resource-stratified guidelines.

Seroconversión posterior a la aplicación de vacuna Pfizer anticovid-19 en personal de la salud / Seroconversión rates following covid-19 Pfizer vaccine application among health personnel

Introducción: la pandemia por COVID-19 constituyó un problema de salud que requirió la realización de esfuerzos sin precedentes para la fabricación de vacunas en tiempo récord. Dada la emergencia no se podían llevar a cabo los protocolos establecidos que componen la fármacovigilancia, razón por la cual es importante realizar estudios locales que contribuyan al conocimiento y vigilancia clínica y farmacológica. Objetivos: evaluar los niveles de anticuerpos desarrollados en quienes recibieron la vacuna Pfizer, determinar los efectos secundarios más frecuentes y describir la mortalidad por todas las causas a un año en este grupo. Métodos: estudio prospectivo, de corte transversal de una cohorte de 105 pacientes, se realizó estadística descriptiva en el análisis univariado y bivariado para los niveles de anticuerpos, se describe la correlación de la edad con los niveles de anticuerpos y la mortalidad cruda de los pacientes a 1 año. Resultados: la edad media de los 105 pacientes fue 36,45 años (DE 10,11), con tendencia al aumento de los niveles de anticuerpos en la segunda toma y descenso en la tercera; se encontró una correlación negativa significativa entre edad y niveles de anticuerpos en la segunda toma. Conclusiones: en los sujetos más jóvenes se presentaron mayores títulos de anticuerpos que disminuyeron con el tiempo, la variabilidad en la titulación puede depender de varios factores como edad, género, imnunosupresores y comorbilidades. Es necesaria la medición para realizar una vacunación periódica e individualizarla. La mortalidad a un año fue de 0%.

Introduction: the COVID-19 pandemic prompted unprecedented efforts to manufacture vaccines in record time. Given the emergency, to conduct the established pharmacovigilance protocols was not possible, thus, the importance of carrying out local studies which contribute to gain understanding and clinical and pharmacological surveillance. Objectives: to evaluate antibody levels developed in subjects who received the Pfizer vaccine; to determine the most frequent side effects; and describe all-cause 1-year mortality in this group. Methods: a prospective, cross-sectional study in a cohort of 105 patients. Descriptive statistics were conducted by univariate and bivariate analyses of antibody levels. The correlation between age and antibody levels and the crude 1-year mortality rate among patients is described. Results: mean age was 36.45 years (SD 10.11), with a tendency for antibody levels to increase with the second dose and decrease with the third dose. A significant negative correlation was found between age and antibody levels in the second dose. Conclusions: younger subjects had higher antibody titers, which decreased over time. The variability of titer estimates may depend on several factors such as, age, gender, immunosuppressive therapies and comorbidities. Measurements are essential for periodic and individualized vaccination. One-year mortality rate was 0%.

Drosophila suzukii energetic pathways are differently modulated by nutritional geometry in males and females.

As a polyphagous pest, Drosophila suzukii has a variety of host fruits available for feeding and oviposition, but how the nutritional geometry of different hosts influences its metabolism is still poorly understood. This work aimed to evaluate how D. suzukii metabolic and transcriptional pathways are influenced by feeding on different host fruits, and how sex influences these responses. Adult flies were allowed to feed on five different fruit-based media. Lipids, glucose, glycogen, and energy pathways-associated gene expression, were quantified. Females showed an energetic metabolism easily adaptable to the food's nutritional characteristics; in contrast, males' energetic metabolism was particularly influenced by food, predominantly those fed on raspberry media who showed changes in glucose levels and in the expression of genes associated with metabolic pathways, suggesting activation of gluconeogenesis and trehaloneogenesis as a result of nutritional deficiency. Here we present novel insight into how D. suzukii's energetic pathways are modulated depending on fruits' nutritional geometry and sex. While the females showed high adaptability in their energetic metabolism to the diet, males were more feeding-sensitive. These findings might be used not only to control this pest population but to better advise producers to invest in less suitable fruits based on the hosts' nutritional geometry.

Capacidad e internamiento involuntario de pacientes con anorexia nerviosa: un estudio cualitativo sobre percepciones y actuación de psiquiatras y psicólogos clínicos / Competence and Involuntary Commitment of Patients with Anorexia Nervosa: A Qualitative study on the Perceptions and Performance of Psychiatrists and Clinical Psychologists

RESUMEN Introducción: La anorexia nerviosa plantea un importante problema bioético, ya que los pacientes, a menudo, rechazan el tratamiento a pesar del peligro que ello supone para su salud, y no está claro que su decisión sea autónoma. El objetivo de este trabajo es investigar las percepciones/actuación de psiquiatras y psicólogos clínicos ante la capacidad y el internamiento involuntario de pacientes con anorexia nerviosa. Métodos: Se entrevistó a 7 psiquiatras, 4 psicólogas clínicas y 1 psicóloga residente de tercer año. Se utilizó un enfoque de investigación cualitativa basado en la teoría fundamentada. Resultados: El análisis de datos mostró que estos profesionales articulan la atención del paciente en torno a una categoría principal, a saber, el internamiento como último recurso y la búsqueda de la voluntariedad, lo que implica un cambio en la dinámica asistencial habitual. En torno a esa categoría central, se erigen algunos conceptos importantes; estrés de rol, coerción informal, peso, familia y cronicidad. Conclusiones: La dificultad de conciliar demandas profesionales puede suponer un menoscabo en la calidad de la asistencia y en la propia satisfacción laboral, lo que pone en evidencia la necesidad de reflexionar e investigar sobre los fundamentos de las atribuciones asumidas.

ABSTRACT Introduction: Anorexia nervosa poses an important bioethical quandary, since patients often refuse treatment despite the danger that this poses to their health, and it is not clear that their decision is autonomous. The aim of this study was to investigate the perceptions/performance of psychiatrists and clinical psychologists regarding the capacity and involuntary hospitalisation of patients with anorexia nervosa. Methods: Seven psychiatrists, four clinical psychologists, and one third-year resident psychologist were interviewed. A qualitative research approach based on grounded theory was used. Results: The data analysis showed that these professionals articulate patient care around one main category - hospitalisation as a last resort and the search for voluntariness, which implies a change in the usual healthcare dynamics. Around this central category, some important concepts emerge: role stress, informal coercion, weight, family and chronicity. Conclusions: The difficulty of reconciling professional demands can undermine the quality of care and job satisfaction itself, which highlights the need for reflection and research into the foundations of the responsibilities assumed.

Actitudes de los profesionales de la salud mental ante la capacidad y el internamiento no voluntario en anorexia nerviosa: construcción, validación y resultados del cuestionario ACINOVAN / Mental Health Professionals' Attitudes Towards Mental Competency and Involuntary Commitment in Anorexia Nervosa: Construction, Validation and Results of the Acinovan Questionnaire

RESUMEN Introducción: La anorexia nerviosa es un trastorno grave que causa tasas elevadas de morbilidad y mortalidad. La aplicación de una intervención no voluntaria solo es legalmente admisible si el paciente no es competente. Sin embargo, la evaluación de su capacidad puede ser extremadamente compleja. Ello conlleva que la decisión final pueda verse influida por las actitudes individuales del facultativo. Objetivo: Crear y validar empíricamente un cuestionario en español que permita medir la actitud hacia la capacidad y el internamiento no voluntario y comparar entre grupos categóricos. Métodos: Formaron la muestra 338 profesionales de salud mental. Los ítems fueron validados por grupos de expertos. Se realizaron un análisis factorial exploratorio y comparaciones grupales. Resultados: Se obtuvo un modelo de 13 ítems formado por 3 factores: prointervención, ausencia de capacidad y cronicidad. Los profesionales tienden a creer en la ausencia de capacidad y la necesidad de la intervención no voluntaria, así como en la idoneidad diferencial en virtud de la cronicidad. El respaldo previo a intervenciones involuntarias se relacionó significativamente con los factores prointervención y ausencia de capacidad y la formación en bioética, con la cronicidad. Conclusiones: El instrumento resultante es válido y fiable. Puede ser útil a profesionales, pacientes y sociedad.

ABSTRACT Introduction: Anorexia nervosa is a serious disorder that causes high rates of morbidity and mortality. Involuntary treatments are only legally admissible if the patient is not competent. However, assessing their capacity can be really complex. This implies that the final decision might be influenced by the individual attitudes of the physician. Objective: To create and empirically validate a questionnaire in Spanish that makes it possible to measure the attitude towards capacity and involuntary commitment and compare between categorical groups. Methods: The sample consisted of 338 mental health professionals. The items were validated by groups of experts. An exploratory factor analysis and group comparisons were carried out. Results: Favourable evidence was obtained of a 13-item model consisting of three factors: pro-intervention, lack of capacity and chronicity. Professionals tend to believe in the lack of capacity and the need for involuntary interventions, as well as differential suitability due to chronicity. Having ever supported involuntary interventions was significantly related to the pro-intervention and lack of capacity factors, and training in bioethics to chronicity. Conclusions: The resulting instrument is valid and reliable. Its use can be useful to professionals, patients and society.

Síndrome de Bouveret como variante de íleo biliar / Bouveret syndrome as a variant of gallstone ileus

Introducción. El síndrome de Bouveret es una variante del íleo biliar, de rara presentación dentro de las causas de obstrucción intestinal, generada por la impactación de un lito biliar a nivel del duodeno, secundario a la formación de una fístula bilioentérica. Es más común en mujeres en la octava década de la vida, con múltiples comorbilidades. y presenta síntomas inespecíficos, documentándose la triada de Rigler hasta en el 80 % de las tomografías de abdomen. La cirugía sigue siendo el tratamiento de elección. Caso clínico. Presentamos el caso de una paciente de 76 años, con múltiples antecedentes y cuadros previos de cólico biliar, que consultó por dolor abdominal y signos de hemorragia de vías digestivas altas y se documentó un síndrome de Bouveret. Fue tratada en la misma hospitalización mediante extracción quirúrgica del cálculo con posterior resolución de su sintomatología.Conclusión. A pesar de que el síndrome deBouveret es una entidad de infrecuente presentación, los cirujanos generalesdeben estar familiarizados con esta patología, en el contexto del paciente que consulta con un cuadro de obstrucción intestinal, conociendo el valor de la tomografía de abdomen y la endoscopia de vías digestivas altas, teniendo en cuenta la edad y las condiciones del paciente para definir el manejo quirúrgico más adecuado.

Introduction. Bouveret's syndrome is a variant of gallstone ileus, of rare presentation within the causes of intestinal obstruction, generated by the impaction of a biliary stone at the level of the duodenum, secondary to the formation of a biliary-enteric fistula. It is more common in women in the eighth decade of life, with multiple comorbidities, and presents non-specific symptoms, with Rigler's triad being documented in up to 80% of abdominal CT scans. Surgery remains the treatment of choice. Clinical case. We present the case of a 76-year-old patient, with history of multiple episodes of biliary colic, who consulted for abdominal pain and signs of upper gastrointestinal bleeding. Bouveret's syndrome was documented. She was treated in the same hospitalization by surgical extraction of the stone with subsequent resolution of her symptoms. Conclussion. Although Bouveret's syndrome is an entity of infrequent presentation, general surgeons must be familiar with this pathology in the context of the patient who presents with intestinal obstruction, knowing the value of abdominal tomography and upper GI endoscopy, taking into account the age and conditions of the patient to define the most appropriate surgical management.

Optimización de una técnica de PCR convencional para la amplificación de la región LCR y el gen E6 del virus del papiloma humano tipo 16

El cáncer de cuello uterino es el cuarto cáncer más frecuente en mujeres en el mundo y a nivel mundial, el VPH 16 se encuentra presente en aproximadamente el 60% de los casos. A la fecha, las variantes de VPH 16 se clasifican en 4 linajes y 16 sublinajes asociándose algunas variantes con severidad de lesión. La secuenciación de la región LCR y del gen E6 es utilizada para la clasificación de variantes. Por ello, el objetivo fue optimizar 2 PCRs convencionales para detectar la región LCR y una PCR para el gen E6. Para ello, se utilizaron muestras positivas para VPH 16, cebadores específicos para la región LCR y el gen E6. Se probaron las reacciones a diferentes temperaturas de anillamientos. La concentración de MgCl2, dNTP y cebadores fueron determinadas siguiendo las recomendaciones del fabricante de la enzima ADN polimerasa utilizada. Para la amplificación de la región LCR y el gen E6 del VPH 16, se observaron mejores resultados a una temperatura de anillamiento de 57°C y 50°C, respectivamente. La concentración de MgCl2 utilizada en ambas reacciones fue de 1,5mM, la de dNTP 0,2mM y la de cebadores 0,2uM. La optimización de la reacción de PCR permitirá obtener amplicones aptos para secuenciación, a fin de determinar las variantes génicas y posteriormente evaluar funcionalidad y actividad transcripcional que puedan estar relacionadas con la patogénesis cervical.

Cervical cancer is the fourth most common cancer in women in the world and worldwide HPV 16 is present in approximately 60% of cases. To date, HPV 16 variants are classified into 4 lineages and 16 sublineages, with some variants being associated with lesion severity. Sequencing of the LCR region and the E6 gene is used for variant classification. Therefore, the objective was to optimize two conventional PCRs to detect the LCR region and one PCR for the E6 gene. For this purpose, HPV 16 positive samples, specific primers for the LCR region and the E6 gene were used. The reactions were tested at different alignment temperatures. The concentration of MgCl2, dNTP, and primers was determined following the recommendations of the manufacturer of the DNA polymerase enzyme used. For amplification of the LCR region and the HPV 16 E6 gene, the best results were observed at an annealing temperature of 57°C and 50°C, respectively. The concentration of MgCl2 used in both reactions was 1.5mM, dNTP 0.2mM and primers 0.2uM. The present optimization will be used to sequence the amplified products to determine the variants and subsequently evaluate the functionality and transcriptional activity in order to relate it to cervical pathogenesis.

Respuestas psicológicas a la cuarentena por pandemia de COVID-19 en población colombiana / Psychological responses to the COVID-19 pandemic quarantine in Colombian population

Resumen Introducción: el presente estudio analiza el estrés percibido, las estrategias de afrontamiento, su regulación emocional, impacto y malestar psicológico, durante la cuarentena por la pandemia de COVID-19 en la población colombiana. Método: muestra no probabilística de 356 adultos que respondieron un cuestionario en línea. Resultados: se encontraron puntuaciones medias y altas en estrategias de afrontamiento y regulación emocional activas y puntuaciones bajas en estrés, malestar psicológico e impacto de la cuarentena. El 38.76 % presentó puntuaciones que indican riesgo de trastorno por estrés postraumático. Las mujeres, los menores de 35 años, los bachilleres, los estudiantes y las personas que viven solas presentan mayores afectaciones. Se encontraron relaciones estadísticamente significativas de estrés con todas las variables, excepto con apoyo social y convivientes durante la cuarentena. Por último, se encontró asociación positiva del estrés con desahogo, supresión expresiva, impacto de la cuarentena y malestar psicológico; y asociación negativa con planificación, aceptación, revaluación cognitiva y edad mayor de 25 años. Conclusiones: los resultados contribuyen a comprender las respuestas ante la cuarentena e identificar factores de vulnerabilidad para diseñar programas de prevención e intervención.

Abstract Introduction: The aim of this study was to analyze the perceived stress, coping strategies, emotional regulation, impact of the event, and psychological distress during quarantine due to COVID-19 pandemic in the Colombian population. Method: Non-probabilistic sample made up of 356 adults who answered an online questionnaire. Results: It was found medium and high scores in active coping strategies and emotional regulation, and low scores in stress, psychological distress and impact of quarantine. The 38.76 % presented scores that indicate risk of post-traumatic stress disorder. Women, people under 35 years of age, high school graduates, students, and living alone during the quarantine showed higher affectation. Statistically significant correlations of stress with all variables except with social support and cohabitants during quarantine were found. Finally, it was found a positive association of stress with venting, expressive suppression, the impact of quarantine, and psychological distress, and negative association with planning, acceptance, cognitive reappraisal, and age over 25 years. Conclusions: These results contribute to understanding responses to quarantine and to identify vulnerability factors to design prevention and intervention programs.

Unusual Case Report of Synchronous Caecal and Sigmoid Volvulus / Reporte de un caso inusual de presentación sincrónica de vólvulo cecal y de sigmoide

Abstract In the spectrum of patients with intestinal obstruction, volvulus is one of the least frequent etiologies (5-15 %). Synchronous volvulus of two colonic segments in a patient is regarded as rare, with few cases reported in the literature. The present report of synchronous cecal and sigmoid volvulus documents one of them: a patient who underwent subtotal colectomy and formation of ileostomy. Although the preoperative diagnosis of this entity is rare, it should be considered in these intraoperative findings for both intraoperative management, with resection and anastomosis or resection and stoma, and postoperative management. It has a significant impact on mortality if patients are treated with broad-spectrum antibiotic coverage, given the bacterial translocation and sepsis that they experience.

Resumen En el espectro de los pacientes con obstrucción intestinal, el vólvulo es una de las etiologías menos frecuentes, siendo esta del 5 % al 15 %. La presentación sincrónica de dos segmentos colónicos volvulados en el mismo paciente se considera una entidad rara, con pocos casos reportados en la literatura. El presente caso de vólvulo sincrónico del ciego y del sigmoide documenta uno de ellos, en un paciente que se llevó a colectomía subtotal con ileostomía. Aunque el diagnóstico preoperatorio de esta entidad es poco frecuente, se debe tener en cuenta a la hora de encontrarse estos hallazgos intraquirúrgicos para el manejo tanto intraoperatorio, con resección y anastomosis o resección y estoma, como posoperatorios, lo que tiene un impacto importante en la mortalidad, si se manejan los pacientes con cubrimiento antibiótico de amplio espectro, dada la translocación bacteriana y septicemias con los que cursan estos pacientes.

[Conjunctival mass as the first manifestation of Epstein Barr virus infection]. / Masa conjuntival como primera manifestación de infección por virus del Epstein Barr.

The Epstein Barr virus is an infectious disease with a high worldwide prevalence, which can present multiple systemic manifestations. The ophthalmological findings are the least frequent and nonspe cific and, therefore, its diagnosis is complicated and delayed; however, it should always be considered as a diagnostic possibility in the presence of atypical ocular and periocular inflammatory clinical pictures. OBJECTIVE: To describe the clinical case of a patient with the presence of a conjunctival mass as the first finding in Epstein Barr virus infection. CLINICAL CASE: A 4-year-old boy with a 4-day history of left upper eyelid edema and ptosis associated with a large, fast-growing, elevated, painful, and salmon-colored upper bulbar conjunctival mass with extension to the upper fornix associated with bilateral cervical and inguinal lymphadenopathy. Initially, a lymphoproliferative disorder was suspected, with blood count with lymphocytosis and atypical lymphocytes, elevated lactate dehydro genase, peripheral blood smear with an increase in white blood cells and some atypical lymphocytes, bone marrow aspirate with a predominance of granulocytes and predominantly CD8-positive T lym phocytes and an increase in Gamma-Delta T lymphocytes. The orbit CT scan showed thickening of the left upper eyelid with peripheral enhancement and the abdominal CT scan showed splenomegaly. Biopsy confirmed chronic Epstein Barr virus infection with positive IgM and indeterminate IgG anti bodies. Symptomatic management was indicated with satisfactory evolution and complete resolution of the conjunctival lesion and lymphadenopathy. CONCLUSION: Epstein Barr virus infection should be considered as a possible diagnosis in atypical ocular and periocular inflammatory manifestations in the pediatric population.

Fisioterapia respiratoria en pacientes adultos post-COVID-19: revisión sistemática de la literatura / Respiratory physiotherapy in post-acute COVID-19 adult patients: Systematic review of literature

Introducción: los pacientes con SARS-CoV-2 presentan signos y síntomas que involucran principalmente el sistema respiratorio. Las secuelas son consecuencia de un deterioro de la calidad de vida, neumonía, fatiga, disnea y dolor articular. Objetivo: tener el sustento científico que permita evidenciar la importancia de la fisioterapia respiratoria y sus efectos sobre los pacientes adultos post-COVID-19 de fase aguda. Material y métodos: se hizo una revisión sistemática de la literatura en cuatro bases de datos (Scopus, Web of Science, PubMed y ScienceDirect). La búsqueda fue realizada en febrero de 2021 con un total de 1229 estudios. Finalmente, se incluyeron cinco estudios que cumplieron con los criterios de elegibilidad: dos ensayos clínicos, dos reportes de caso y un estudio transversal. La calidad metodológica de las publicaciones fue evaluada. Resultados: el entrenamiento de la musculatura respiratoria, las respiraciones dirigidas y el fortalecimiento general dan datos significativos en la mejora de la funcionalidad. La evidencia demuestra que hay efectos positivos de la fisioterapia respiratoria en pacientes adultos post-COVID-19, pues aumenta la resistencia al ejercicio, disminuye la fatiga, se reduce la disnea, mejora la funcionalidad y la calidad de vida. Conclusiones: es necesario que se desarrollen más ensayos clínicos aleatorizados y estudios de grupos de menor rango de edad y con enfoques individualizados.

Background: Patients with SARS-CoV-2 present signs and symptoms that primarily involve the respiratory system. The sequelae result in impaired quality of life, pneumonia, dyspnea, fatigue, and joint pain.

2D Nanosheets-A New Class of Therapeutic Formulations against Cancer.

Researchers in cancer nanomedicine are exploring a revolutionary multifaceted carrier for treatment and diagnosis, resulting in the proposal of various drug cargos or "magic bullets" in this past decade. Even though different nano-based complexes are registered for clinical trials, very few products enter the final stages each year because of various issues. This prevents the formulations from entering the market and being accessible to patients. In the search for novel materials, the exploitation of 2D nanosheets, including but not limited to the highly acclaimed graphene, has created extensive interest for biomedical applications. A unique set of properties often characterize 2D materials, including semiconductivity, high surface area, and their chemical nature, which allow simple decoration and functionalization procedures, structures with high stability and targeting properties, vectors for controlled and sustained release of drugs, and materials for thermal-based therapies. This review discusses the challenges and opportunities of recently discovered 2D nanosheets for cancer therapeutics, with special attention paid to the most promising design technologies and their potential for clinical translation in the future.

Importancia de dar a conocer la evolución temporal del pronóstico en anorexia nerviosa / Importance of disclosing the temporal evolution of the prognosis in anorexia nervosa

RESUMEN La anorexia nerviosa es un trastorno con altos niveles de cronicidad. Sin embargo, los datos epidemiológicos referidos al pronóstico suelen obviar la probabilidad de recuperación a lo largo del tiempo, refiriéndose de manera exclusiva al inicio del curso del trastorno. El objetivo de este artículo es mostrar cómo varía la probabilidad de recuperación de los pacientes con anorexia nerviosa a lo largo del tiempo a partir de la información obtenida de un estudio publicado por Theander en 1985 con datos que abarcan un período medio de observación de 33 años. La pertinencia del presente estudio radica en que el cuidado de los pacientes que la padecen requiere un conocimiento adecuado de las posibilidades de éxito terapéutico en cada momento de la evolución del trastorno y no solo en su inicio. Es conveniente ofrecer datos sobre la evolución temporal de las probabilidades de recuperación y cronicidad, que brindan una visión más ajustada de las perspectivas terapéuticas.

ABSTRACT Anorexia nervosa is a disorder with high levels of chronicity. However, epidemiological data related to prognosis usually obviate the probability of recovery over time, referring exclusively to the beginning of the course of the disorder. The objective of this article is to show how the probability of recovery of patients with anorexia nervosa varies over time based on the information obtained from a study published by Theander in 1985 with data covering an average observation period of 33 years. The relevance of the present study lies in the fact that the care of patients who suffer from it requires an adequate knowledge of the possibilities of therapeutic success at each moment of the evolution of the disorder and not only at its onset. It is convenient to offer data on the temporal evolution of the probabilities of recovery and chronicity, which provide a more accurate view of the therapeutic perspectives.