Differential Protein Expression of Taenia crassiceps ORF Strain in the Murine Cysticercosis Model Using Resistant (C57BL/6) Mice.

A cysticercosis model of Taenia crassiceps ORF strain in susceptible BALB/c mice revealed a Th2 response after 4 weeks, allowing for the growth of the parasite, whereas resistant C57BL/6 mice developed a sustained Th1 response, limiting parasitic growth. However, little is known about how cysticerci respond to an immunological environment in resistant mice. Here, we show that the Th1 response, during infection in resistant C57BL/6 mice, lasted up to 8 weeks and kept parasitemia low. Proteomics analysis of parasites during this Th1 environment showed an average of 128 expressed proteins; we chose 15 proteins whose differential expression varied between 70 and 100%. A total of 11 proteins were identified that formed a group whose expression increased at 4 weeks and decreased at 8 weeks, and another group with proteins whose expression was high at 2 weeks and decreased at 8 weeks. These identified proteins participate in tissue repair, immunoregulation and parasite establishment. This suggests that T. crassiceps cysticerci in mice resistant under the Th1 environment express proteins that control damage and help to establish a parasite in the host. These proteins could be targets for drugs or vaccine development.

Hallazgos nasosinusales por tomografía computada en dacriocistitis crónica pediátrica.

OBJECTIVE: To evaluate the preoperative tomographic characteristics of the nose and paranasal sinuses of children with chronic dacryocystitis. METHOD: Prospective, observational, cross-sectional, and descriptive study. CT scans of the paranasal sinuses of patients candidates for endoscopic dacryocystorhinostomy were evaluated for two years. Demographic characteristics, radiological findings, inflammatory processes and anatomical variants were identified using the Lund-Mackay classification. Statistic analysis. Stata 10.0, descriptive analysis, Student's t: mean difference and χ2. Logistic studies to estimate the probability between variables. RESULTS: 27 men and 11 women (n = 38) were included. Of these, 22 had unilateral and 16 bilateral nasolacrimal duct involvement. Lund-Mackay score range: 2-20. Eleven patients had associated pathology. The most affected were anterior and maxillary ethmoidal sinus (69%), osteomeatal complex (68%), posterior ethmoidal (51%). Patients with severe rhinosinusitis are 12 times more likely to develop dacryocystitis than patients with < 12 points. Men presented greater severity, affectation, and clinical repercussion. CONCLUSIONS: There is radiological rhinosinusal involvement in dacryocystitis, which must be evaluated and treated preoperatively to avoid postoperative complications or reinfections.

OBJETIVO: Evaluar las características tomográficas preoperatorias de la nariz y los senos paranasales de niños con dacriocistitis crónica. MÉTODO: Estudio prospectivo, observacional, transversal y descriptivo. Se evaluaron tomografías de senos paranasales de pacientes candidatos a dacriocistorrinostomía endoscópica, durante 2 años. Se identificaron características demográficas, hallazgos radiológicos, procesos inflamatorios y variantes anatómicas, utilizando la clasificación Lund-Mackay. Análisis estadístico con Stata 10.0, análisis descriptivo con t de Student: diferencia medias y χ2. Estudios logísticos para estimar la probabilidad entre variables. RESULTADOS: Se incluyeron 27 hombres y 11 mujeres (n = 38). De ellos, 22 tenían afección del conducto nasolagrimal unilateral y 16 bilateral. Rango de puntuación de Lund-Mackay: 2-20. Once pacientes tuvieron patología asociada. Seno etmoidal anterior y maxilar más afectados (69%), complejo osteomeatal (68%), etmoidal posterior (51%). La probabilidad de que los pacientes con rinosinusitis grave puedan presentar dacriocistitis es 12 veces mayor que en los pacientes con < 12 puntos. Los hombres presentaron mayor gravedad, afectación y repercusión clínica. CONCLUSIONES: Existe afección rinosinusal radiológica en la dacriocistitis, que debe ser evaluada y tratada en el preoperatorio para evitar complicaciones o reinfecciones posquirúrgicas.

Gestión del Cuidado GDC en Atención Primaria: percepción de enfermeras, en pandemia, Chile, 2021 / GDC Care Management in Primary Care: perception of nurses, in pandemic, Araucanía, Chile, 2021 / GDC Gestão do Cuidado na Atenção Primária: percepção dos enfermeiros, em uma pandemia, Chile, 2021

Introducción: En Chile, la enfermera cumple su rol profesional apoyada(o) en su experiencia y disciplina como cuidadora, con la finalidad de lograr un cambio positivo en la salud del individuo y comunidad. Como profesión, enfermería es declarada en el año 1997, como una profesión autónoma e independiente, estableciendo la Gestión del Cuidado (GDC) en lo relativo a la promoción, prevención, mantenimiento, restauración de la salud, y mejor administración de los recursos asistenciales. Objetivo: Develar la percepción de la Gestión del Cuidado en enfermeras comunitarias. Material y método: Estudio descriptivo, transversal con enfoque cualitativo, muestra por conveniencia a 9 enfermeras de Atención Primaria de Salud (APS) a través de entrevistas semiestructuradas. Resultados: Se obtienen las Metacategorías; Concepción del concepto GDC en APS, Expresión de la GDC en APS en pandemia, Facilitadores para la GDC, y Obstaculizadores para la gestión del cuidado en APS. Discusión: La GDC involucra el desarrollo de funciones, para la atención cerrada, descritas en el Código Sanitario. Bajo esta premisa, urge la necesidad de respaldar la APS, con la estructura de la GDC, lo que facilita la instauración del modelo de atención comunitaria coordinada, centrada en la persona y orientada en la prevención. Conclusión: En Chile, gestionar los cuidados en APS, requiere ser visto desde la complejidad, en lo colectivo, territorial, desde la gobernanza, y en un entorno de incertidumbre, cuidados esencialmente visualizados por la pandemia. Junto a un desarrollo tecnológico, de avance muy incipiente, que debe responder a la exigencia de la rapidez del trabajo de cuidado comunitario.

Introduction: In Chile, the nurse fulfills the professional role supported by her discipline and experience as a caregiver, in order to achieve a positive change in the health of the individual. Nursing is declared in 1997, as an autonomous and independent profession, establishing are management (GDC) in relation to the promotion, prevention, maintenance, restoration of health, and ensuring the best administration of care resources. Objective: To reveal the perception of Care Management in community nurses. Material and method: Descriptive, cross-sectional study with a qualitative approach, sample for convenience to 9 Primary Health Care (PHC) nurses through semi-structured interviews. Results: metacategories are obtained; Conception of the GDC care management concept in PC, Expression of care management in PHC in a pandemic, Facilitators for care management in PHC, Obstacles to care management in PHC. Discussion: The GDC involves functions to meet the needs of users, described in the Sanitary Code; being a relevant need for APS. Nursing will be able to offer a model of coordinated community care, centered the person and oriented towards prevention. Conclusion: In Chile, managing PHC care requires to be seen from the complexity, in the collective, territorial, from the governance, and in an environment of uncertainty, care essentially visualized by the pandemic. Together with a technological development, of very incipient progress, which must respond to the demands of the speed of community care work.

Introdução: No Chile, a enfermeira cumpre seu papel profissional apoiada em sua experiência e disciplina como cuidadora, a fim de alcançar uma mudança positiva na saúde do indivíduo e da comunidade. Como profissão, a Enfermagem é declarada em 1997 como profissão autônoma e independente, estabelecendo a Gestão do Cuidado (GDC) em relação à promoção, prevenção, manutenção, recuperação da saúde e melhor administração dos recursos assistenciais. Objetivo: Revelar a percepção da Gestão do Cuidado emenfermeiros comunitários. Material e método: Estudo descritivo, transversal, com abordagem qualitativa, amostrado por conveniência 9 enfermeiros da Atenção Primária à Saúde (APS) por meio de entrevista semiestruturada. Resultados: Obtêm-se as metacategorias; Concepção do conceito GDC na APS, Expressão da GDC na APS na pandemia, Facilitadores para GDC e Obstáculos à gestão do cuidado na APS. Discussão: O GDC envolve o desenvolvimento de funções para atendimento fechado, descritas no Código Sanitário. Sob essa premissa, é urgente apoiar a APS, com a estrutura do GDC, o que facilita o estabelecimento do modelo de atenção comunitária coordenada, centrada na pessoa e orientada para a prevenção. Conclusão: No Chile, a gestão do cuidado na APS precisa ser vista a partir da complexidade, coletivamente, territorialmente, da governança, e em ambiente de incerteza, cuidado essencialmente visualizado pela pandemia. Juntamente com um desenvolvimento tecnológico, de progresso muito incipiente, que deve responder à demanda pela celeridade do trabalho de cuidado comunitário.

Activation of dopamine D2 receptors attenuates neuroinflammation and ameliorates the memory impairment induced by rapid eye movement sleep deprivation in a murine model.

The proinflammatory state, which may be induced by sleep deprivation, seems to be a determining factor in the development of neurodegenerative processes. Investigations of mechanisms that help to mitigate the inflammatory effects of sleep disorders are important. A new proposal involves the neurotransmitter dopamine, which may modulate the progression of the immune response by activating receptors expressed on immune cells. This study aimed to determine whether dopamine D2 receptor (D2DR) activation attenuates the proinflammatory response derived from rapid eye movement (REM) sleep deprivation in mice. REM sleep deprivation (RSD) was induced in 2-month-old male CD1 mice using the multiple platform model for three consecutive days; during this period, the D2DR receptor agonist quinpirole (QUIN) was administered (2 mg/kg/day i.p.). Proinflammatory cytokine levels were assessed in serum and homogenates of the brain cortex, hippocampus, and striatum using ELISAs. Long-term memory deficits were identified using the Morris water maze (MWM) and novel object recognition (NOR) tests. Animals were trained until learning criteria were achieved; then, they were subjected to RSD and treated with QUIN for 3 days. Memory evocation was determined afterward. Moreover, we found RSD induced anhedonia, as measured by the sucrose consumption test, which is commonly related to the dopaminergic system. Our data revealed increased levels of proinflammatory cytokines (TNFα and IL-1ß) in both the hippocampus and serum from RSD mice. However, QUIN attenuated the increased levels of these cytokines. Furthermore, RSD caused a long-term memory evocation deficit in both the MWM and NOR tests. In contrast, QUIN coadministration during the RSD period significantly improved the performance of the animals. On the other hand, QUIN prevented the anhedonic condition induced by RSD. Based on our results, D2DR receptor activation protects against memory impairment induced by disturbed REM sleep by inhibiting neuroinflammation.

Exposure to Sub-Lethal Doses of Permethrin Is Associated with Neurotoxicity: Changes in Bioenergetics, Redox Markers, Neuroinflammation and Morphology.

Permethrin (PERM) is a member of the class I family of synthetic pyrethroids. Human use has shown that it affects different systems, with wide health dysfunctions. Our aim was to determine bioenergetics, neuroinflammation and morphology changes, as redox markers after subacute exposure to PERM in rats. We used MDA determination, protein carbonyl assay, mitochondrial O2 consumption, expression of pro-inflammatory cytokines and a deep histopathological analysis of the hippocampus. PERM (150 mg/kg and 300 mg/kg body weight/day, o.v.) increased lipoperoxidation and carbonylated proteins in a dose-dependent manner in the brain regions. The activities of antioxidant enzymes glutathione peroxidase, reductase, S-transferase, catalase, and superoxide dismutase showed an increase in all the different brain areas, with dose-dependent effects in the cerebellum. Cytokine profiles (IL-1ß, IL-6 and TNF-α) increased in a dose-dependent manner in different brain tissues. Exposure to 150 mg/kg of permethrin induced degenerated and/or dead neurons in the rat hippocampus and induced mitochondrial uncoupling and reduction of oxidative phosphorylation and significantly decreased the respiratory parameters state 3-associated respiration in complex I and II. PERM exposure at low doses induces reactive oxygen species production and imbalance in the enzymatic antioxidant system, increases gene expression of pro-inflammatory interleukins, and could lead to cell damage mediated by mitochondrial functional impairment.

Personal and Environmental Predictors of Aggression in Adolescence.

This study aims to find causal factors of aggression in a group of Latino adolescents to achieve a greater understanding of human nature, taking into account personal and contextual variables. The fundamental hypothesis is that moral disengagement, personality traits, self-esteem, values, parenting, sex, and socioeconomic situation can function as possible casual factors of aggression in adolescents. The study examined the variables using the structural equations model (SEM) to determine causal factors of aggression in a sample of 827 adolescents (54% men and 46% women) between 11 and 16 years of age. According to the scientific literature review, sociodemographic, personal, and familiar variables were included in the causal model. The influence of the variables occurred in two ways: one that inhibits aggression and the other that reinforces it. The results are discussed based on identifying protective and risk factors against aggression: biological sex and values of conformity and transcendence as aggression's inhibitors and, on the other hand, openness, moral disengagement, and leadership values as the most important predictors of aggression.

Effects of time-of-day on the concentration of defined excitatory and inhibitory amino acids in the cerebrospinal fluid of rats: a microdialysis study.

Amino acid neurotransmitters are responsible for many physiological and pathological processes, and their cerebral concentrations respond to external influences such as the light-dark cycle and to the synthesis, release, and recapture rhythms and form part of the biochemical relationships derived from excitatory-inhibitory (E/I), glutamine-glutamate sum (GLX), glutamatergic processing (glutamine-glutamate ratio) and excitotoxic indexes. The changes in these variables during a 24-h period (1 day) are important because they allow organisms to adapt to external stimuli and form part of physiological processes. Under pathological conditions, the damage produced by acute events may depend on diurnal variations. Therefore, it is important to analyze the extracellular levels of amino acids as well as the above-mentioned indexes over a 24-h period. We focused on determining the cerebrospinal fluid levels of different amino acid neurotransmitters, and the E/I, GLX, glutamatergic processing and excitotoxic indexes, determined by microdialysis over a 24-h cycle. Our results showed significant changes during the 24-h light/dark cycle. Specifically, we found increments in the levels of glutamate (325%), GABA (550%), glutamine (300%), glycine (194%), alanine (304%) and the GLX index (263%) throughout the day, and the maximum levels of glutamate, glutamine, glycine, and alanine were obtained during the last period of the light period. In conclusion, the concentration of some amino acid neurotransmitters and the GLX index show variations depending on the light-dark cycle.

Intervención psicosocial, bienestar y capital social en comunidades con desventaja socioeconómica / Psychosocial intervention, welfare and social capital in communities with socio-economic disadvantage

Introducción: En Colombia se realizan programas de intervención psicosocial en comunidades con desventaja socioeconómica para mejorar su calidad de vida, sin embargo, no se realizan evaluaciones de impacto para medir su efectividad. Objetivo: Determinar la relación que existe entre el tiempo de exposición a procesos de intervención psicosocial en comunidades en desventaja socioeconómica, con su percepción de bienestar psicológico, bienestar social y capital social, en el área metropolitana de Barranquilla. Métodos: investigación fue de corte explicativo ex post facto, con una muestra de 135 personas mayores de 17 años. Se hizo un análisis de varianza para encontrar la dependencia entre los procesos de intervención y las variables dependientes. Resultados: Se encontró una relación de significancia entre el grupo etario de los participantes y algunas dimensiones del bienestar psicológico, del bienestar social y del capital social. No se encontraron relaciones significativas entre el tiempo de intervención y las variables dependientes mencionadas. Conclusiones: A pesar de la vulnerabilidad del entorno, las comunidades intervenidas participantes del estudio evidenciaron una percepción de bienestar psicológico y social y de valoración positiva de su capital social sin una relación significativa con el tiempo de exposición al trabajo comunitario. Los procesos de intervención psicosocial tienen el potencial suficiente para favorecer la mejora de las condiciones de las personas, grupos o comunidades, pero requieren de la implementación de procesos de evaluación que permitan hacer seguimiento a su impacto(AU)

Introduction: Colombia psychosocial intervention programs are carried out in communities with socioeconomic disadvantage to improve their quality of life; however, no impact's assessments are carried out to measure their effectiveness. Objective: Determine the relation between the time of exposure to psychosocial intervention's processes in communities at socioeconomic disadvantage, and their perception of psychological well-being, social welfare and social capital, in the metropolitan area of Barranquilla. Methods: The research was ex post facto explanatory one, with a sample of 135 people over the age of 17. A variance analysis was done to find the dependency between intervention processes and dependent variables. Results: A relationship of significance was found between the age group of the participants and some dimensions of psychological well-being, social welfare and social capital. No significant relationships were found between the intervention time and the dependent variables mentioned. Conclusions: Despite the vulnerability of the environment, the communities involved in the study demonstrated a perception of psychological and social well-being and positive assessment of their social capital without a significant relationship with the time of exposure to community work. Psychosocial intervention's processes have sufficient potential to promote the improvement of the conditions of individuals, groups or communities, but they require the implementation of assessment processes that allow to follow up on their impact(AU)

Diurnal Variation Induces Neurobehavioral and Neuropathological Differences in a Rat Model of Traumatic Brain Injury.

Traumatic brain injury (TBI) induces two types of brain damage: primary and secondary. Damage initiates a series of pathophysiological processes, such as metabolic crisis, excitotoxicity with oxidative stress-induced damage, and neuroinflammation. The long-term perpetuation of these processes has deleterious consequences for neuronal function. However, it remains to be elucidated further whether physiological variation in the brain microenvironment, depending on diurnal variations, influences the damage, and consequently, exerts a neuroprotective effect. Here, we established an experimental rat model of TBI and evaluated the effects of TBI induced at two different time points of the light-dark cycle. Behavioral responses were assessed using a 21-point neurobehavioral scale and the cylinder test. Morphological damage was assessed in different regions of the central nervous system. We found that rats that experienced a TBI during the dark hours had better behavioral performance than those injured during the light hours. Differences in behavioral performance correlated with less morphological damage in the perilesional zone. Moreover, certain brain areas (CA1 and dentate gyrus subregions of the hippocampus) were less prone to damage in rats that experienced a TBI during the dark hours. Our results suggest that diurnal variation is a crucial determinant of TBI outcome, and the hour of the day at which an injury occurs should be considered for future research.

Chronic Systemic Inflammation Exacerbates Neurotoxicity in a Parkinson's Disease Model.

Systemic inflammation is a crucial factor for microglial activation and neuroinflammation in neurodegeneration. This work is aimed at assessing whether previous exposure to systemic inflammation potentiates neurotoxic damage by the neurotoxin 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) and how chronic systemic inflammation participates in the physiopathological mechanisms of Parkinson's disease. Two different models of systemic inflammation were employed to explore this hypothesis: a single administration of lipopolysaccharide (sLPS; 5 mg/kg) and chronic exposure to low doses (mLPS; 100 µg/kg twice a week for three months). After three months, both groups were challenged with MPTP. With the sLPS administration, Iba1 staining increased in the striatum and substantia nigra, and the cell viability lowered in the striatum of these mice. mLPS alone had more impact on the proinflammatory profile of the brain, steadily increasing TNFα levels, activating microglia, reducing BDNF, cell viability, and dopamine levels, leading to a damage profile similar to the MPTP model per se. Interestingly, mLPS increased MAO-B activity possibly conferring susceptibility to MPTP damage. mLPS, along with MPTP administration, exacerbated the neurotoxic effect. This effect seemed to be coordinated by microglia since minocycline administration prevented brain TNFα increase. Coadministration of sLPS with MPTP only facilitated damage induced by MPTP without significant change in the inflammatory profile. These results indicate that chronic systemic inflammation increased susceptibility to MPTP toxic effect and is an adequate model for studying the impact of systemic inflammation in Parkinson's disease.

Differences in Diurnal Variation of Immune Responses in Microglia and Macrophages: Review and Perspectives.

Biological rhythms, especially those that last close to 24 h, better known as circadian rhythms, are highly regulated phenomena, maintained throughout evolution in various organisms which allow organisms to predict, prepare for, and adapt to environmental changes. One of these phenomena that exhibit biological rhythms is the immune response to external agents. Immune cells (neutrophils, lymphocytes, macrophages, among others), as well as their mediators such as cytokines and chemokines, undergo variations in tissue and blood concentrations during the day. These rhythms are still being elucidated in microglia, the resident macrophages of the central nervous system, but since these cells share a common origin with peripheral macrophages, they are expected to behave similarly. In this review, we will discuss the possible differences in the responses between peripheral macrophages and microglia, their relationship with the circadian clock, and whether these rhythms can influence therapeutic choices.

Correction to: Differences in Diurnal Variation of Immune Responses in Microglia and Macrophages: Review and Perspectives.

The original version of this article unfortunately contained an error in the author group. The given name and family name was interchanged for the two co-authors. The author name should be Anahí Chavarría and Luz Navarro instead it was published incorrectly as Chavarría Anahí and Navarro Luz. The original article has been corrected.

Taenia solium and Taenia crassiceps: miRNomes of the larvae and effects of miR-10-5p and let-7-5p on murine peritoneal macrophages.

Neurocysticercosis (NCC), a major cause of neurological morbidity worldwide, is caused by the larvae of Taenia solium. Cestodes secrete molecules that block the Th1 response of their hosts and induce a Th2 response permissive to their establishment. Mature microRNAs (miRs) are small noncoding RNAs that regulate gene expression and participate in immunological processes. To determine the participation of Taenia miRs in the immune response against cysticercosis, we constructed small RNA (sRNA) libraries from larvae of Taenia solium and Taenia crassiceps. A total of 12074504 and 11779456 sequencing reads for T. solium and T. crassiceps, respectively, were mapped to the genomes of T. solium and other helminths. Both larvae shared similar miRNome, and miR-10-5p was the most abundant in both species, followed by let-7-5p in T. solium and miR-4989-3p in T. crassiceps, whereas among the genus-specific miRs, miR-001-3p was the most abundant in both, followed by miR-002-3p in T. solium and miR-003a-3p in T. crassiceps. The sequences of these miRs were identical in both. Structure and target prediction analyses revealed that these pre-miRs formed a hairpin and had more than one target involved in immunoregulation. Culture of macrophages, RT-PCR and ELISA assays showed that cells internalized miR-10-5p and let-7-5p into the cytoplasm and the miRs strongly decreased interleukin 16 (Il6) expression, tumor necrosis factor (TNF) and IL-12 secretion, and moderately decreased nitric oxide synthase inducible (Nos2) and Il1b expression (pro-inflammatory cytokines) in M(IFN-γ) macrophages and expression of Tgf1b, and the secretion of IL-10 (anti-inflammatory cytokines) in M(IL-4) macrophages. These findings could help us understand the role of miRs in the host-Taenia relationship.

Neuroinflamación: el ying-yang de la neuroinmunología / Neuroinflammation: the ying-yang of neuroimmunology

Resumen El área de la neuroinmunología es un campo que se encuentra en gran desarrollo y que tiene como objetivo el entender las interacciones fisiológicas entre el sistema nervioso central (SNC) y el sistema inmune periférico, llegándose a encontrar que estas relaciones son más importantes de lo que se creía y que por lo tanto son 2 sistemas íntimamente conectados y con una gran dinámica. Por otro lado, la neuroinflamación es activada después de cualquier reto inmunológico, tanto dentro como fuera del SNC, y que puede llevar a generar tanto respuestas enfocadas a la limitación del daño y la restauración del tejido, como a ser un riesgo para el desarrollo de enfermedades neurodegenerativas en el caso de que este estímulo permanezca de manera crónica.

Abstract The field of neuroimmunology has recently had a development, and its primary goal is to understand the physiological interactions between the central nervous system (CNS) and the peripheral immune system. Various data has found that these relations are more important than what was previously thought. Also, that both systems are highly dynamic and are intimately connected. On the other hand, neuroinflammation is activated after any immune challenge, both inside and outside the CNS, leading to responses focused on limiting tissue damage and restoration; as well as being a risk for developing neurodegenerative diseases when this stimulus remains chronic.

Diurnal variation of NMDA receptor expression in the rat cerebral cortex is associated with traumatic brain injury damage.

OBJECTIVE: Data from our laboratory suggest that recovery from a traumatic brain injury depends on the time of day at which it occurred. In this study, we examined whether traumatic brain injury -induced damage is related to circadian variation in N-methyl-D-aspartate receptor expression in rat cortex. RESULTS: We confirmed that traumatic brain injury recovery depended on the time of day at which the damage occurred. We also found that motor cortex N-methyl-D-aspartate receptor subunit NR1 expression exhibited diurnal variation in both control and traumatic brain injury-subjected rats. However, this rhythm is more pronounced in traumatic brain injury-subjected rats, with minimum expression in those injured during nighttime hours. These findings suggest that traumatic brain injury occurrence times should be considered in future clinical studies and when designing neuroprotective strategies for patients.

Educational and evaluation strategies in the training of physician specialists / Estrategias educativas y de evaluación en la formación de médicos especialistas

Background: Teaching strategies have been defined as procedures, means or resources that teachers used to promote meaningful learning. Aim: Identify teaching strategies and evaluation used by the professor with residents in tertiary hospitals health care. Methods: This is a cross-sectional study conducted with full, associate and assistant professors of various medical specialties. A questionnaire was applied to evaluate the strategies used by professors to teach and evaluate students. Results: We included a sample of 90 professors in 35 medical specialties. The most frequent teaching activities were: organizing students to develop presentations on specific subjects, followed by asking questions on previously reviewed subjects, In terms of the strategies employed, the most frequent "always" option was applied to case analyses. The most frequent methods used for the evaluation of theoretical knowledge were: participation in class, topic presentation and exams. Conclusions: Teaching activities were primarily based on the presentation of specific topics by the residents. The most commonly used educational strategies were clinical case analyses followed by problem-based learning and the use of illustrations. Evaluation of the residents' performance in theory knowledge, hinged on class participation, presentation of assigned topics and exams.

Antecedentes: Las estrategias didácticas se han definido como procedimientos, medios o recursos que el docente utiliza para promover el aprendizaje significativo. Objetivo: Identificar las estrategias de enseñanza y de evaluación que utiliza el profesor con residentes en hospitales de tercer nivel de atención médica. Método: Estudio transversal, con profesores de diversas especialidades, en el Centro Médico Nacional La Raza. Se aplicó un cuestionario que valora las estrategias utilizadas en la enseñanza y la evaluación. Resultados: En una muestra de 90 profesores, 35 especialidades médicas con profesores ayudantes, adjuntos y titulares, las actividades de enseñanza que más realizan son organizar a los alumnos a exponer temas, seguido de realizar preguntas sobre temas vistos. Respecto a las estrategias educativas, la más frecuente fue análisis de casos y aprendizaje basado en problemas. Para evaluación del desempeño teórico, los métodos más utilizados fueron participación en clase, exposición de temas y exámenes. Conclusiones: las actividades de enseñanza están basadas en la exposición de temas por los médicos residentes. La estrategia educativa más utilizada fue llevar a cabo análisis de casos clínicos, seguido por aprendizaje basado en problemas. La evaluación del desempeño en aspectos teóricos se realiza a partir de la participación en clase, la exposición de temas y exámenes.

Effect of Intermediate-Frequency Repetitive Transcranial Magnetic Stimulation on Recovery following Traumatic Brain Injury in Rats.

Traumatic brain injury (TBI) represents a significant public health concern and has been associated with high rates of morbidity and mortality. Although several research groups have proposed the use of repetitive transcranial magnetic stimulation (rTMS) to enhance neuroprotection and recovery in patients with TBI, few studies have obtained sufficient evidence regarding its effects in this population. Therefore, we aimed to analyze the effect of intermediate-frequency rTMS (2 Hz) on behavioral and histological recovery following TBI in rats. Male Wistar rats were divided into six groups: three groups without TBI (no manipulation, movement restriction plus sham rTMS, and movement restriction plus rTMS) and three groups subjected to TBI (TBI only, TBI plus movement restriction and sham rTMS, and TBI plus movement restriction and rTMS). The movement restriction groups were included so that rTMS could be applied without anesthesia. Our results indicate that the restriction of movement and sham rTMS per se promotes recovery, as measured using a neurobehavioral scale, although rTMS was associated with faster and superior recovery. We also observed that TBI caused alterations in the CA1 and CA3 subregions of the hippocampus, which are partly restored by movement restriction and rTMS. Our findings indicated that movement restriction prevents damage caused by TBI and that intermediate-frequency rTMS promotes behavioral and histologic recovery after TBI.

[Knowledge of the Advance Directive (AD) in Physicians at Tertiary Care Hospitals]. / La «voluntad anticipada¼ y su conocimiento por médicos en hospitales de tercer nivel.

UNLABELLED: The Advance Directive is generally conceptualized as the respect that all human beings deserve in the use of their faculties, to deliberate, choose, and decide upon everything that pertains to their existence, including their life goals and personal health. OBJECTIVE: To identify knowledge about the AD that Medical Residents at tertiary care facilities of the Mexican Social Security Institute (Instituto Mexicano del Seguro Social, IMSS) in the District Capital (Mexico City), possess. METHOD: Written survey with 10 questions for Medical Residents (MR) of different specialties at tertiary care hospitals. STUDY DESIGN: Survey. RESULTS: The questionnaire was applied to 280 MR of more than ten different specialties, at the La Raza and the S XXI Medical Centres (Centro Médico La Raza y Centro Médico Siglo XXI). The majority of respondents were first-year MR (67.5%), and the minority were sixth-year Residents (1.9%). Incomplete knowledge about the Federal AD Law exists. DISCUSSION: In Mexico, like on an international plane, the contemporary, social dynamic has fundamentally influenced the practice of healthcare professions. The responsibilities that health care professionals take on obligate them to be current in areas like the rights of healthy and sick individuals to be involved in and decide on aspects related to the phase at the end of their lives. The AD, Vital Testament, Living Will, will push doctors to improve the doctor-patient relationship since the establishment of an AD is not possible without a good patient-doctor rapport.

The epidemiology of fungemia in an infectious diseases hospital in Mexico city: A 10-year retrospective review.

The epidemiology of invasive fungal infections has recently changed in immunosuppressed populations as a result of HIV infection, organ transplant, chemotherapy and in elderly patients. The diagnosis of invasive fungal infections by culture is prolonged since fungi grow slowly in vitro. we wanted to estimate the frequency of fungemia diagnoses established through the Clinical Mycology Laboratory over the past 10 years; through a retrospective study; data was obtained from the laboratory patient registry in the Infectious Disease Hospital's laboratory registry of patients with a systemic fungal isolate between 2005 and 2014. One hundred and thirty two (132) systemic fungal infections were identified. They were more prevalent in males, in the age group between 20 and 59 years and in patients with a diagnosis of AIDS. The most frequently isolated agents belonged to the genus Candida and others such as Histoplasma sp., Cryptococcus sp., Aspergillus sp., and Coccidioides sp. Of all blood and bone marrow cultures received 17.9% had fungal development; of these, in 70% of cases it was through blood cultures. In general, fungal agents were not diagnostically suspected. We identified that Sixty percent (60%) of fungemias developed in AIDS patients, followed by patients with sepsis. The most common agents belonged to the genus Candida, predominantly the albicans species. They were more frequently identified by blood culture than by bone marrow culture. Invasive fungal infections have not followed a usual clinical pattern and are not easily recognizable.

[Expression of the concept of death by residents of a tertiary hospital]. / Expresión del concepto de muerte por médicos residentes de un hospital de tercer nivel.

INTRODUCTION: Attitudes of health professionals are based on their conditions and personal life experiences about life and death and are part of their professional behavior. Medical training relies mainly on physical-biological sciences and, to a lesser extent, on social-medical aspects, thus forming the physician's concept about death. These concepts may present themselves as a result of culture and as factors that model or limit the cognitive development of the physicians. OBJECTIVE: To determine the concept of death of medical residents in a high-specialty hospital. METHODS: A cross-sectional, prospective survey of physicians in training from the first to the sixth year from different specialties. Descriptive statistical analysis was carried out. RESULTS: We made 174 surveys; 61% were in the first year of the specialty; 149 practiced some religion. Women were 3.5 times more likely to have a concept of death that was not that of a biologist, unlike men. Women were 25% more likely to have had an influence of religion on their concept of death. CONCLUSIONS: The personality of the physician is versatile. It has a relationship with professional and human experiences. As training progresses, medical influence transforms biological or religious views. The concept of death and its influence on the idea appeared to be different between male and female physicians.