Imaging studies in evaluating children with stridor. / Los estudios por imágenes en la evaluación del niño con estridor.

Stridor is a symptom of upper airway obstruction and may result from congenital or acquired causes. The diagnosis is usually clinical. If further investigation is necessary for differential diagnosis, endoscopy is the method of choice in most cases. Imaging studies are complementary to endoscopy. They allow evaluation of laryngeal and tracheobronchial pathology and extrinsic airway compressions due to tumors or vascular malformations and define a lesion's location, extent, and characteristics. They are helpful in cases of diagnostic doubt and when endoscopy is unavailable. It is essential to understand the anatomy and pathophysiology of the respiratory tract and to be aware of the indications and limitations of complementary examinations for proper diagnosis. The different imaging modalities available to evaluate stridor in pediatrics are described, and their advantages are discussed.

El estridor es un síntoma de obstrucción de la vía aérea superior y puede ser resultado de causas congénitas o adquiridas. El diagnóstico suele ser clínico. Si es necesaria una investigación adicional para el diagnóstico diferencial, la endoscopia es el método de elección en la mayoría de los casos. Los estudios por imágenes son complementarios a la endoscopia. Permiten evaluar la patología laríngea y traqueobronquial, las compresiones extrínsecas de la vía aérea por tumores o malformaciones vasculares y definir la localización, extensión y características de una lesión. Son útiles en casos de duda diagnóstica y cuando la endoscopia no está disponible. Es fundamental comprender la anatomía y fisiopatología del tracto respiratorio, y ser conscientes de las indicaciones y limitaciones de los exámenes complementarios para el diagnóstico adecuado. Se describen las diferentes modalidades de imágenes disponibles para evaluar el estridor en pediatría y se discuten sus ventajas.

Ciliary Madarosis Secondary to Intra-Arterial Chemotherapy for Retinoblastoma Treatment.

Background: Retinoblastoma is the most common intraocular tumor in the pediatric population. Its main therapeutic objectives are to avoid fatal outcomes and preserve vision as much as possible. Intra-arterial chemotherapy (IAC) improves drug delivery and reduces possible systemic adverse effects. This modality allows direct administration of chemotherapeutic agents to intraocular malignancies via the ophthalmic artery (OA), proving to be a feasible and effective method for globe salvage. Most side effects of IAC are local, including eyelash loss of the nasal portion of the eyelid. Summary: We performed a comprehensive review to analyze data regarding ciliary madarosis in patients diagnosed with retinoblastoma treated with IAC. We describe 9 studies with a total of 637 eyes with retinoblastoma that underwent IAC, of which 45 cases presented madarosis. In chemotherapy-induced alopecia, there is hair shaft thinning and breakage. On trichoscopy, the remaining end of the fractured hair will be observed as black dots. Differential diagnoses must include alopecia areata and trichotillomania. Key Messages: Ciliary madarosis secondary to IAC, although transitional, may cause discomfort in patients and family members. Physical examination, as well as a trichoscopic evaluation of the affected area, can help in reaching a prompt diagnosis and prognosis for this particular alopecia.

Hollow viscus perforation in blunt abdominal trauma: A 14-year experience from a trauma center.

BACKGROUND: Isolated perforations of hollow viscus (HV) represent less than 1% of injuries in blunt abdominal trauma (BAT). When they do present, they are generally due to high-impact mechanisms in the segments of the intestine that are fixed. The aim of this study is to determine the incidence of major HV injuries in BAT at the "Dr. Domingo Luciani" General Hospital (HDL), and address the literature gap regarding updated HV perforations following BAT, especially in low-income settings. METHODS: A retrospective review was conducted on the medical records of patients admitted to our trauma center with a diagnosis of complicated BAT with HV perforation over 14 years. RESULTS AND DISCUSSION: Seven hundred sixty-one patients were admitted under the diagnosis of BAT. Of them, 36.79% underwent emergency surgical resolution, and 6.04% had HV perforation as an operative finding. Almost half (44.44%) of these cases presented as a single isolated injury, while the remaining were associated with other intra-abdominal organ injuries. The most common lesions were Grade II-III jejunum and Grade I transverse colon, affecting an equal proportion of patients at 13.33%. In recent years, an increased incidence of HV injuries secondary to BAT has been observed. Despite this, in many cases, the diagnosis is delayed, so even in the presence of negative diagnostic studies, the surgical approach based on the trauma mechanism, hemodynamic status, and systematic reevaluation of the polytraumatized patient should prevail.

Seroprevalencia de Toxoplasma gondii y su relación con trastornos mentales en adultos / Seroprevalence of Toxoplasma gondii and its Relationship with Mental Disorders in the Adult Population

El Toxoplasma gondii es un parásito que se encuentra, aproximadamente, en el 30 % de la población humana. Durante los últimos años se ha evidenciado que la infección latente puede ser un factor de riesgo para el desarrollo de trastornos mentales; particularmente para la esquizofrenia, ansiedad, trastornos bipolares y trastornos de conducta. La asociación con los trastornos neuropsiquiátricos pueden explicarse por la influencia que tiene el parásito sobre la expresión de múltiples neurotransmisores; entre ellos la dopamina. Se realizó una búsqueda en las bases de datos PubMed y SciELO de 2015 a 2023, se seleccionaron artículos originales y de revisión de revistas científicas internacionales, en idiomas inglés y español con el objetivo de describir la relación entre la seroprevalencia de T. gondii y el desarrollo de trastornos mentales en población adulta. Existe relación entre los trastornos mentales en la población adulta con la infección por Toxoplasma gondii y este aumenta la posibilidad de desarrollar esquizofrenia y depresión en individuos sin historial previo, y que podría exacerbar cuadros psiquiátricos previos con dificultad en el tratamiento. Sin embargo, no todos los datos estadísticos establecen una relación directa, algunos estudios demuestran una asociación, ciertos datos son discordantes, lo que abre una puerta para futuras investigaciones.

Toxoplasma gondii is a parasite that is found in approximately 30 % of the human population. In recent years, it has been shown that latent infection can be a risk factor for the development of mental disorders; particularly schizophrenia, anxiety, bipolar disorders, and conduct disorders. The association with neuropsychiatric disorders can be explained by the influence of the parasite on the expression of multiple neurotransmitters; among them, dopamine has received the most attention. A narrative bibliographic review article was done with the search of original and review articles in international scientific journals, in English and Spanish listing the relationship between the seroprevalence of T. gondii and the development of mental disorders in the adult population. The relationship between mental disorders in the adult population with Toxoplasma gondii infection is present and increases the possibility of developing schizophrenia and depression in individuals with no previous history, including the ability to worsen previous psychiatric conditions, making it difficult for standard management. Not all statistical data establish a direct relationship, some studies show an association and certain data are discordant, which opens a door for future research.

Robotic Management of Complex Vesicourethral Anastomosis Stenosis With Transperineal Urethral Advancement: A Step-by-Step Technique.

BACKGROUND: Vesicourethral anastomosis stenosis (VUAS) refers to the diameter narrowing of a vesicourethral anastomosis (VUA). It is a known complication after radical prostatectomy that nowadays presents in less than 1% of these cases. When the lumen narrows sufficiently to impede urine flow, obstructive symptoms arise. While the incidence of VUAS used to be notably higher prior to the widespread use of the robotic approach, traditional procedures still fail in up to 42% of cases. Initial management typically involves endoscopic procedures, such as dilation, incision, or resection. If these approaches prove ineffective, VUA reconstruction is warranted. Following the resection of the unhealthy urethra, a potential drawback is the insufficient length of the healthy proximal urethral to reach the bladder without tension. In such cases, urinary diversion with an ileal conduit is an option. However, when the patient prefers to maintain an orthotopic urinary tract configuration, there is limited guidance in the literature regarding surgical techniques. OBJECTIVE: To outline the indications, describe the step-by-step technique, and evaluate the outcomes of transperineal urethral advancement to facilitate a tension-free VUA. MATERIALS: We first discuss the indications to identify which patients are candidates for this procedure. Then, a step-by-step description of the robotic VUA revision assisted by transperineal urethral mobilization is presented. Detailed steps and helpful hints are included. Finally, we outline the postoperative pathway and expected outcomes. RESULTS: This technique allows patients with VUAS to preserve the orthotopic configuration of the urinary tract when a tension-free anastomosis proves challenging. Although urinary incontinence is expected, an artificial urinary sphincter could be placed in the following months. CONCLUSION: The robotic management of complex vesicourethral anastomosis stenosis with transperineal urethral advancement is a feasible and safe procedure that requires the interdisciplinary management of robotic and reconstructive urologists.

Use of real-time near-infrared fluorescence to assess gastric viability in dogs with gastric dilatation volvulus: A case-control study.

OBJECTIVE: To describe near-infrared fluorescence (NIRF) for assessment of gastric viability and describe NIRF's influence on the surgeon's operative strategy in dogs with gastric dilatation and volvulus (GDV). STUDY DESIGN: Prospective clinical trial. ANIMALS: Twenty dogs with GDV and 20 systemically healthy dogs. METHODS: Following gastric derotation, the surgeon's subjective assessment of gastric viability was recorded prior to near-infrared imaging. Changes in the surgeon's initial assessment of viability based on the visual pattern of gastric fluorescence was recorded. If nonviable (lack of defined vessels), a partial gastrectomy was performed and submitted for histopathology. The stapled gastrectomy line was imaged. Viable (defined vessels) and nonviable fluorescence intensities were compared with healthy dogs undergoing surgery for nongastrointestinal disease. RESULTS: Subjective assessment diagnosed 17 viable and three nonviable GDVs (2 fundi; 1 cardia). Near-infrared imaging demonstrated nonviable gastric fluorescence in 4 dogs (3 fundi/cardia; 1 fundus). The surgeon's margins for resection were altered in 3/20 dogs. Fluorescence intensity (cardia, fundus, body, pylorus) was lower in GDV viable (30.59%, p = .04; 38.17%, p < .01; 51.18%, p < .01; 44.12%, p= .01) and nonviable (11.00%, p < .01; 4.33%, p < .01; 57.67%, p = .22; 54.33%, p = .72) dogs compared to healthy controls (44.7%, 70.05%, 84.00%, 63.95%). Fundic fluorescence was less in nonviable gastric tissue in comparison with viable gastric tissue (p = .03). Fluorescence of the gastrectomy staple line approximated that of viable tissue. CONCLUSION: Near-infrared fluorescence can identify histologically confirmed nonviable gastric tissue. CLINICAL SIGNIFICANCE: These results provide enough evidence to support the implementation of NIRF as an adjunct to gross examination of the gastric wall in dogs with GDV.

Together We Go Farther: Improving Access to Cancer Screening Through a Multidisciplinary, One-Stop-Shop Approach.

RATIONALE AND OBJECTIVES: Despite significant scientific advances in cancer treatment in recent decades, Black Americans still face marked inequities in cancer screening, diagnosis, and treatment. Redressing these persistent inequities will require innovative strategies for community engagement. Radiologists, as experts in cancer screening and diagnosis for multiple malignancies, including breast, lung, and colon, are ideally suited to lead and implement community-based strategies to address local cancer disparities. MATERIALS AND METHODS: Through an established academic-community partnership in West Philadelphia built over the course of multiple prior community healthcare events, the authors piloted a novel radiology-led multidisciplinary approach to improve access to cancer screening for the predominantly Black, medically-underserved residents. Using a "one-stop-shop" framework to provide a comprehensive suite of screening and ancillary services in the heart of the community, the authors sought to remove as many impediments to screening as possible. RESULTS: Approximately 350 participants attended the health fair, and a total of 232 screening tests or assessments were completed. Data from this event suggest that this inclusive approach, as well as the use of a health fair "passport" to incentivize engagement, can successfully improve access to screening and follow-up in an underserved community. CONCLUSION: This "one-stop-shop" community approach can be replicated by radiology-led teams in other settings as a high-value, scalable opportunity to reduce disparities in access to cancer screening.

Genetic variants of antioxidant and xenobiotic metabolizing enzymes and their association with prostate cancer: A meta-analysis and functional in silico analysis.

The development and progression of prostate cancer (PCa) depends on complex interactions between genetic, environmental and dietary factors that modulate the carcinogenesis process. Interactions between chemical exposures and genetic polymorphisms in genes encoding xenobiotic metabolizing enzymes (XME), antioxidant enzymes and DNA repair enzymes have been reported as the main drivers of cancer. Thus, a better understanding of the causal risk factors for PCa will provide avenues to identify men at increased risk and will contribute to develop effective detection and prevention methods. We performed a meta-analysis on 17,518 cases and 42,507 controls obtained from 42 studies to determine whether seven SNPs and one CNV pertaining to oxidative stress, xenobiotic detoxification and DNA repair enzymes are associated with the risk of PCa (GPX1 (rs1050450), XRCC1 (rs25487), PON1 (rs662), SOD2 (rs4880), CAT (rs1001179), GSTP1 (rs1695) and CNV GSTM1). A significant increased risk of PCa was found for SOD2 (rs4880) ORGG+GA vs. AA 1.08; 95%CI 1.01-1.15, CAT (rs1001179) ORTT vs. TC+CC 1.39; 95%CI 1.17-1.66, PON1 (rs662) ORCT vs. CC+TT 1.17; 95%CI 1.01-1.35, GSTP1 (rs1695) ORGG vs. GA+AA 1.20; 95%CI 1.05-1.38 and GSTM1 (dual null vs. functional genotype) ORN vs. NN1+NN2 1.34; 95%CI 1.10-1.64. The meta-analysis showed that the CNV GSTM1, and the SNPs GSTP1 (rs1695) and CAT (rs1001179) are strongly associated with a greater risk of PCa and, to a lesser extent, the genetic variants SOD2 (rs4880) and PON1 (rs662). Although several antioxidant enzymes and XME play an important role in the PCa development, other risk factors such as chemical exposures should also be considered to gain insight on PCa risk. The functional in silico analysis showed that the genetic variants studied had no clinical implication regarding malignancy, except for GPX1 (rs1050450) SNP.

Diagnostic performance of different cardiac stress protocols for myocardial perfusion imaging for the diagnosis of coronary artery disease using a cadmium-zinc-telluride camera with invasive coronary angiography correlation.

PURPOSE: To evaluate the diagnostic performance of three different cardiac stress protocols for myocardial perfusion imaging (MPI) using a cadmium-zinc-telluride (CZT) camera with invasive coronary angiography (ICA) correlation for the diagnosis of coronary artery disease in a high risk population. METHODS: Retrospective study of 263 patients (96 women and 167 males, mean age 68 years) from which 119 patients performed a bicycle stress test (BST), 113 pharmacological stress test (PST) and 31 a combination of the two (CST) between September 2014 and December 2018. The patients then underwent myocardial perfusion imaging (MPI), followed by ICA and evaluated by means of quantitative angiography software, within six months after the MPI. The mean pre-test probability score for coronary disease according to the European Society of Cardiology criteria was 36% for the whole population. The MPI was performed in a dedicated CZT cardio camera (D-SPECT Spectrum Dynamics) with a two-day protocol, according to the European Association of Nuclear Medicine guidelines. RESULTS: No significant difference was observed between the three stress protocols in terms of diagnostic accuracy (BST 85%, PST 88%, CST 84%). The overall diagnostic accuracy of MPI to identify patients with any obstructive CAD at ICA was 86%, Sensitivity 93%, Specificity 54%, PPV 90% and NPV 63%. CONCLUSION: The CZT D-SPECT camera achieves overall satisfactory results in the diagnosis of CAD, observing no significant differences in the diagnostic performance when the stress test was performed as a BST, PST or CST.

Percepción de los estudiantes que rindieron el Examen Nacional de Enfermería de Chile / Students' perception of the Chilean National Nursing Exam

BACKGROUND: In 2008, the Chilean National Nursing Examination Commission, COENENF, developed a national nursing exam (ENENF). Since 2013, COENENF has implemented a validated opinion survey at the time of the national examination to strengthen the quality of the exam and facilitate its continuous improvement. AIM: To determine the perception of nursing students about general aspects, specific areas, representativeness, mastery and usefulness of the 2018 ENENF. MATERIAL AND METHODS: A descriptive, cross-sectional study, using a self-administered Likert-type survey, was administered in 2018 to 2949 last-year nursing students from 29 nursing schools who took the ENENF. The survey comprised three areas: representativeness of the questions, student mastery of each area, and the usefulness of the exam. RESULTS: Students had a positive perception of the Chilean ENENF and its application. Theoretical knowledge is effectively assessed and close to half of the sample agreed that the ENENF is useful. The results also suggest areas that should be improved. CONCLUSIONS: Nursing students had a positive perception of the ENENF.

Barreras y facilitadores en la atención primaria de salud en personas con discapacidad física / Barriers and facilitators in primary health care for people with physical disabilities

Introducción: La discapacidad se considera un problema de salud a nivel mundial. Las personas con discapacidad física son susceptibles de padecer distintos problemas de salud. A pesar de ser un grupo priorizado, el acceso a los servicios de salud es menor que el de la población en general, debido a barreras de distintos tipos. Objetivo: Describir las barreras y facilitadores de acceso a la atención primaria de salud en personas con discapacidad física. Métodos: Se realizó una revisión bibliográfica cuya metodología estuvo basada en la búsqueda, selección, revisión, interpretación y síntesis de la evidencia científica relacionada con el problema de investigación. Se utilizó como fuente de literatura científica primaria la publicada en las bases de datos Scielo, Redalyc, Latindex y PudMed en los últimos 5 años, con los términos de búsqueda MeSH en idoma español, inglés y portugués. Desarrollo: Se identificó un total de 67 documentos de los cuales se empleó 46 en la investigación realizada. Los restantes 21 manuscritos fueron excluidos por presentar deficiencias metodológicas que limitaban su utilización. Las principales barreras son las condiciones físicas de las unidades de salud; el funcionamiento del Sistema de Salud; el acceso de las personas con discapacidad a la atención primaria de salud; y las características del paciente y su entorno familiar. El principal facilitador es el relacionado con el Sistema de Salud. Conclusiones: El acceso de las personas con discapacidad física a los servicios de salud está condicionado por situaciones que se interpretan como barreras o facilitadores. En este sentido los factores relacionados con el sistema de salud nacional y con las características y el entorno de la persona con discapacidad pueden comportarse como barrera o como facilitador, en dependencia de su expresión(AU)

Introduction: Disability is considered a health problem worldwide. People with physical disabilities are susceptible to different health problems. Despite being a prioritized group, access to health services is lower than that of the general population, conditioned by the presence of different types of barriers. Objective: To describe the barriers and facilitators of access to primary health care in people with physical disabilities. Methods: A bibliographic review was carried out whose methodology was based on the search, selection, review, interpretation and synthesis of the scientific evidence related to the research problem. It was used as a source of primary scientific literature published in the databases Scielo, Redalyc, Latindex and PudMed in the last 5 years, with the MeSH search terms in Spanish, English and Portuguese. Results: A total of 67 documents were identified, of which 46 were used in the research carried out. The remaining 21 manuscripts were excluded due to methodological deficiencies that limited their use. Conclusions: The access of people with physical disabilities to health services is conditioned by situations that are interpreted as barriers or facilitators. In this sense, the factors related to the national health system and the characteristics and environment of the person with a disability can act as a barrier or as a facilitator, depending on their expression(AU)

Factores del estilo de vida con efecto inmunomodulador ante infecciones virales respiratorias en el adulto / Lifestyle factors with immunomodulatory effect against respiratory viral infections in adults

Actualmente se estudia la importancia de los estilos de vida sobre el sistema inmunológico. Las infecciones virales respiratorias son una causa de morbimortalidad en el adulto y pueden ocasionar cuadros graves. Una dieta balanceada, el consumo de micronutrientes y el ejercicio, presentan posibles beneficios en la evolución de estas infecciones. Se realizó una revisión narrativa utilizando revisiones bibliográficas y artículos originales obtenidos por PubMed, SciELO, HINARI y Elsevier. Los estudios describen que el consumo de suplementos vitamínicos modula la susceptibilidad a agentes patógenos debido a su actividad antioxidante y permiten el funcionamiento adecuado de la inmunidad innata y adaptativa. Acompañados a ello, los lípidos y los carbohidratos de la dieta son elementos básicos de las células del sistema inmune que, acompañado de 45 minutos de ejercicio moderado, mejoran la respuesta inmune y reducen el riesgo de infecciones virales respiratorias. El consumo de micronutrientes, el ejercicio aeróbico de moderada intensidad y la dieta balanceada son factores que disminuyen la duración de los síntomas por infecciones virales respiratorias agudas en el adulto. Sin embargo, aún se desconoce exactamente el mecanismo de acción del ejercicio en el sistema inmune

The role of lifestyles on the immune system is currently being studied. Respiratory viral infections are a cause of morbidity and mortality in adults, and can cause serious conditions. A balanced diet, consumption of micronutrients and exercise have possible benefits in the evolution of these infections. A narrative review was carried out using bibliographic reviews and original articles obtained in PubMed, SciELO, HINARI and Elsevier. Studies describe that the consumption of vitamin supplements modulates the susceptibility to pathogens due to their antioxidant activity and allows the proper functioning of innate and adaptive immunity. Along with this, lipids and carbohydrates in the diet are basic elements of the immune system cells and, accompanied with 45 minutes of moderate exercise, improve the immune response and reduce the risk of respiratory viral infections. The consumption of micronutrients, moderate intensity aerobic exercise and a balanced diet, are factors that decrease the duration of symptoms due to acute respiratory viral infections in adults. However, the exact mechanism of action of exercise on the immune system is still unknown

Type 2 Diabetes-Related Variants Influence the Risk of Developing Prostate Cancer: A Population-Based Case-Control Study and Meta-Analysis.

In this study, we have evaluated whether 57 genome-wide association studies (GWAS)-identified common variants for type 2 diabetes (T2D) influence the risk of developing prostate cancer (PCa) in a population of 304 Caucasian PCa patients and 686 controls. The association of selected single nucleotide polymorphisms (SNPs) with the risk of PCa was validated through meta-analysis of our data with those from the UKBiobank and FinnGen cohorts, but also previously published genetic studies. We also evaluated whether T2D SNPs associated with PCa risk could influence host immune responses by analysing their correlation with absolute numbers of 91 blood-derived cell populations and circulating levels of 103 immunological proteins and 7 steroid hormones. We also investigated the correlation of the most interesting SNPs with cytokine levels after in vitro stimulation of whole blood, peripheral mononuclear cells (PBMCs), and monocyte-derived macrophages with LPS, PHA, Pam3Cys, and Staphylococcus Aureus. The meta-analysis of our data with those from six large cohorts confirmed that each copy of the FTOrs9939609A, HNF1Brs7501939T, HNF1Brs757210T, HNF1Brs4430796G, and JAZF1rs10486567A alleles significantly decreased risk of developing PCa (p = 3.70 × 10-5, p = 9.39 × 10-54, p = 5.04 × 10-54, p = 1.19 × 10-71, and p = 1.66 × 10-18, respectively). Although it was not statistically significant after correction for multiple testing, we also found that the NOTCH2rs10923931T and RBMS1rs7593730 SNPs associated with the risk of developing PCa (p = 8.49 × 10-4 and 0.004). Interestingly, we found that the protective effect attributed to the HFN1B locus could be mediated by the SULT1A1 protein (p = 0.00030), an arylsulfotransferase that catalyzes the sulfate conjugation of many hormones, neurotransmitters, drugs, and xenobiotic compounds. In addition to these results, eQTL analysis revealed that the HNF1Brs7501939, HNF1Brs757210, HNF1Brs4430796, NOTCH2rs10923931, and RBMS1rs7593730 SNPs influence the risk of PCa through the modulation of mRNA levels of their respective genes in whole blood and/or liver. These results confirm that functional TD2-related variants influence the risk of developing PCa, but also highlight the need of additional experiments to validate our functional results in a tumoral tissue context.

Anagen Effluvium after Neurointerventional Radiation: Trichoscopy as a Diagnostic Ally.

Minimally invasive procedures for vascular brain lesions are being performed more frequently. Radiation exposure caused by endovascular embolization of cerebral aneurysms may give rise to nonscarring scalp alopecia located in the treated area. Clinical and trichoscopic features of this type of alopecia are similar to alopecia areata (AA). Herein, we performed a comprehensive review to describe the clinical and trichoscopic characteristics of radiation-induced anagen effluvium. Predominant trichoscopic findings include black dots, yellow dots, short vellus hairs, and absence of exclamation marks hairs. It is important to consider this diagnosis in patients who have recently undergone such procedures that can easily be misdiagnosed as AA.

Estresores académicos y sintomatología depresiva en mujeres universitarias económicamente vulnerables durante la pandemia por COVID-19 / Academic stressors and depressive symptomatology among economically vulnerable college women during the COVID-19 pandemic

Resumen Antecedentes Las mujeres universitarias socioeconómicamente vulnerables son un grupo de riesgo para desarrollar problemas de salud mental durante la pandemia por COVID-19, encontrándose que la regulación emocional y factores de apoyo docente pueden moderar este efecto. Objetivo Evaluar un modelo de moderación moderada del apoyo docente sobre las estrategias de regulación emocional (ERE) en la relación entre estresores académicos y sintomatología depresiva en universitarias socioeconómicamente vulnerables. Método 371 mujeres entre 18 y 29 años que cursaban estudios superiores completaron una encuesta donde se evaluó la sintomatología depresiva a través del PHQ-9 y las ERE mediante el CERQ. Para evaluar los estresores académicos y percepción del apoyo docente, se diseñaron preguntas específicas. Resultados Se identificaron dos modelos de efectos indirectos que mostraron que un bajo apoyo docente moderó la moderación de niveles bajos y medios de la estrategia de regulación de planificación en la relación entre los estresores académicos "calidad de aprendizaje online" y "preocupación por el rendimiento académico" con la sintomatología depresiva. Conclusiones Se discute sobre el rol de estrategias de regulación emocional que apuntan a aspectos metacognitivos y apoyo docente como factores protectores para este grupo específico frente a los estresores académicos, principalmente ligados al rendimiento académico.

Abstract Background female university students from socioeconomically vulnerable groups is a high-risk group for the development of mental health problems in the covid-19 pandemic. Objective To evaluate the moderating role of teacher support on emotional regulation strategies (ERS) in the relationship between academic stressors (AS) and depressive symptoms in female university students from socioeconomically vulnerable groups. Method 371 women between 18 and 29 years old who were in higher education completed a survey where depressive symptoms were evaluated through the PHQ-9 and the ERD through CERQ. To assess academic stressors and perception of teacher support, specific questions were designed. Results Two indirect effect models were identified that showed that low teacher support moderated the moderation of low and medium levels of ERS planning in the relationship of "quality of online learning" and "concern for academic performance" with depressive symptoms. Conclusions The role of ERS that points to metacognitive aspects and teaching support as protective factors for this specific group against AS, mainly linked to academic performance is discussed at the end.

Defecto oncológico maxilar reconstruido mediante colgajo de músculo temporal / Maxillary oncologic defect reconstructed with temporal muscle flap / Defeito oncológico maxilar reconstruído por aba muscular temporal

El macizo facial es una región anatómica compleja que alberga órganos sensoriales. El desarrollo de una enfermedad oncológica, así como su tratamiento, causan defectos funcionales y estéticos con un alto costo físico y psíquico para el paciente y su entorno. Es por ello que la reconstrucción representa un reto. Las diferentes posibilidades incluyen prótesis obturatríces, colgajos libres, pediculados o microvascularizados. En este artículo se describirá el colgajo de músculo temporal y se desarrolla un caso clínico de cirugía oncológica maxilar reconstruido mediante éste en un paciente que presenta una lesión exofítica en cuadrante superior derecho, que se extiende sobre el flanco vestibular, reborde alveolar y zona palatina, desde zona de premolares hasta la zona del segundo molar inclusive, impidiéndole usar la prótesis dental. Esta cirugía es una técnica económica, que requiere menor tiempo quirúrgico que otras técnicas, asociándose a poco porcentaje de fracaso y pocas complicaciones post operatorias.

The facial mass is a complex anatomical region that houses sensory organs. The development of an oncologic disease, as well as its treatment, causes functional and esthetic defects with a high physical and psychological cost for the patient and his environment. This is why reconstruction represents a challenge. The different possibilities include obturator-root prostheses, free, pedicled or microvascularized flaps. In this article the temporal muscle flap will be described and a clinical case of maxillary oncologic surgery reconstructed by means of it is developed in a patient who presents an exophytic lesion in the right upper quadrant, which extends over the vestibular flank, alveolar ridge and palatal area, from the premolar area up to and including the second molar area, preventing him from using the dental prosthesis. This surgery is an economical technique that requires less surgical time than other techniques, and is ass

A massa facial é uma região anatômica complexa que abriga órgãos sensoriais. O desenvolvimento de uma doença oncológica, assim como seu tratamento, causa defeitos funcionais e estéticos com alto custo físico e psicológico para o paciente e seu ambiente. A reconstrução é, portanto, um desafio. As diferentes possibilidades incluem as próteses de raiz obturadora, abas livres, pediculadas ou microvascularizadas. Este artigo descreve o retalho muscular temporal e descreve um caso clínico de cirurgia oncológica maxilar reconstruída utilizando-o em um paciente com lesão exofítica no quadrante superior direito, estendendo-se pelo flanco vestibular, rebordo alveolar e área palatina, desde a área do pré-molar até a área do segundo molar inclusive, impedindo-o de utilizar a prótese dentária. Esta cirurgia é uma técnica econômica, que requer menos tempo cirúrgico que outras.

Heterocycle-containing tranylcypromine derivatives endowed with high anti-LSD1 activity.

As regioisomers/bioisosteres of 1a, a 4-phenylbenzamide tranylcypromine (TCP) derivative previously disclosed by us, we report here the synthesis and biological evaluation of some (hetero)arylbenzoylamino TCP derivatives 1b-6, in which the 4-phenyl moiety of 1a was shifted at the benzamide C3 position or replaced by 2- or 3-furyl, 2- or 3-thienyl, or 4-pyridyl group, all at the benzamide C4 or C3 position. In anti-LSD1-CoREST assay, all the meta derivatives were more effective than the para analogues, with the meta thienyl analogs 4b and 5b being the most potent (IC50 values = 0.015 and 0.005 µM) and the most selective over MAO-B (selectivity indexes: 24.4 and 164). When tested in U937 AML and prostate cancer LNCaP cells, selected compounds 1a,b, 2b, 3b, 4b, and 5a,b displayed cell growth arrest mainly in LNCaP cells. Western blot analyses showed increased levels of H3K4me2 and/or H3K9me2 confirming the involvement of LSD1 inhibition in these assays.

Clinical impact of immunotherapy in Merkel cell carcinoma patients: A systematic review and meta-analysis.

BACKGROUND: Immunotherapy is emerging as an alternative treatment for Merkel cell carcinoma, but its long-term effects on response, survival, and safety are not well established. High-quality evidence is needed to estimate the efficacy of this treatment and to review the characteristics of patients and tumors that might improve outcomes. OBJECTIVE: To summarize efficacy and safety of immunotherapy in patients with Merkel cell carcinoma. METHODS: A systematic review was performed for studies published in MEDLINE, Web of Science, Scopus, and EMBASE. Two reviewers examined the literature and data extraction in duplicate. We estimated the proportions for objective responses, progression-free survival, overall survival, and treatment-related adverse events. Associations between objective response rate and immunobiologic markers were analyzed. RESULTS: Six clinical trials of 201 patients treated with immunotherapy were included. The objective response rate was 51% (95% confidence interval, 0.40-0.62; I2 = 37.1%) and grade ≥3 treatment-related adverse events were observed in 18% (95% confidence interval, 0.11-0.29; I2 = 49.5%) of patients. No significant difference was observed between response rates and immunobiologic characteristics. CONCLUSIONS: A significantly reduced tumor diameter with durable response rates and a safe profile are obtained with immunotherapy. Similar response rates achieved on either subgroup of viral status or programmed death ligand 1 expression suggests that it might act on multiple, unexplored pathways.

Osteosintesis asistida con navegación 2D con tornillos iliacosacros percutáneos en lesiones del anillo pélvico posterior / Assisted osteosynthesis with 2D navigation with percutaneous iliacosacral screws in posterior pelvic ring injuries

Introducción: La osteosíntesis percutánea sacroiliaca guiada por radioscopia en lesiones del anillo pélvico posterior sigue siendo la técnica de referencia. Sin embargo, el desarrollo de técnicas como la cirugía asistida por navegación 2D/3D o por tomografía han mejorado la facilidad y seguridad en la colocación de los tornillos. Objetivo: Presentar la técnica de fijación asistida por navegación en 2D y los resultados clínicos y radiológicos obtenidos. Materiales y métodos: Se revisaron 23 pacientes con disrupción del anillo pélvico posterior (luxación y/o fractura sacroiliaca) intervenidos mediante fijación percutánea asistida por navegación 2D (Sistema Synergy de Medtronic®) en el hospital desde 2017 hasta la actualidad. Se recogieron variables demográficas, de clasificación, terapéuticas y las complicaciones derivadas. Se utilizó la escala modificada de valoración POS (Multicenter Study Group Pelvis Outcome Scale) para evaluar el resultado clínico, radiológico y social. Resultados: Ocho pacientes presentaban luxación sacro-iliaca y 15 tenían fractura a través del sacro. Se implantaron 40 tornillos iliacosacros. El tiempo quirúrgico medio fue de 20 minutos para cada tornillo. Fueron necesarios ocho pulsos de radioscopia de media por intervención. Hubo tres tornillos (7.5%) mal posicionados. 15 pacientes obtuvieron un resultado bueno o excelente en el formulario POS. Conclusiones: La técnica asistida por navegación es una alternativa con buenos resultados. Facilita al cirujano la colocación correcta de los tornillos en el corredor óseo sacro, acortando el tiempo quirúrgico y con una menor exposición a radiaciones ionizantes. Es útil para todo tipo de lesiones del anillo y cuando son necesarias maniobras de reducción.

Introduction: Radioscopy-guided percutaneous sacroiliac osteosynthesis in posterior pelvic ring lesions continues to be the reference technique. However, the development of techniques such as surgery assisted by 2D/3D navigation or tomography have improved the ease and safety in screw placement. Objective: To present the 2D navigation-assisted fixation technique and the clinical and radiological results obtained. Materials and methods: 23 patients with disruption of the posterior pelvic ring (dislocation and/or sacroiliac fracture) who underwent percutaneous fixation assisted by 2D navigation (Medtronic® Synergy System) at the hospital from 2017 to the present were reviewed. Demographic, classification, therapeutic variables and resulting complications were collected. The modified POS (Multicenter Study Group Pelvis Outcome Scale) assessment scale was used to evaluate the clinical, radiological and social outcome. Results: Eight patients had sacro-iliac dislocation and 15 had a fracture through the sacrum. 40 iliacosacral screws were implanted. The average surgical time was 20 minutes for each screw. An average of eight fluoroscopy pulses were necessary per intervention. There were three screws (7.5%) incorrectly positioned. 15 patients had a good or excellent result on the POS form. Conclusions: The navigation-assisted technique is an alternative with good results. It makes it easier for the surgeon to correctly place the screws in the sacral bone corridor, shortening surgical time and with less exposure to ionizing radiation. It is useful for all types of ring injuries and when reduction maneuvers are necessary.