Transcriptional reprogramming in sound-treated Micro-Tom plants inoculated with Pseudomonas syringae pv. tomato DC3000.

Sound vibrations (SV) are known to influence molecular and physiological processes that can improve crop performance and yield. In this study, the effects of three audible frequencies (100, 500 and 1000 Hz) at constant amplitude (90 dB) on tomato Micro-Tom physiological responses were evaluated 1 and 3 days post-treatment. Moreover, the potential use of SV treatment as priming agent for improved Micro-Tom resistance to Pseudomonas syringae pv. tomato DC3000 was tested by microarray. Results showed that the SV-induced physiological changes were frequency- and time-dependent, with the largest changes registered at 1000 Hz at day 3. SV treatments tended to alter the foliar content of photosynthetic pigments, soluble proteins, sugars, phenolic composition, and the enzymatic activity of polyphenol oxidase, peroxidase, superoxide dismutase and catalase. Microarray data revealed that 1000 Hz treatment is effective in eliciting transcriptional reprogramming in tomato plants grown under normal conditions, but particularly after the infection with Pst DC3000. Broadly, in plants challenged with Pst DC3000, the 1000 Hz pretreatment provoked the up-regulation of unique differentially expressed genes (DEGs) involved in cell wall reinforcement, phenylpropanoid pathway and defensive proteins. In addition, in those plants, DEGs associated with enhancing plant basal immunity, such as proteinase inhibitors, pathogenesis-related proteins, and carbonic anhydrase 3, were notably up-regulated in comparison with non-SV pretreated, infected plants. These findings provide new insights into the modulation of Pst DC3000-tomato interaction by sound and open up prospects for further development of strategies for plant disease management through the reinforcement of defense mechanisms in Micro-Tom plants.

CYP21A2 mutations in pediatric patients with congenital adrenal hyperplasia in Costa Rica.

Steroid 21-hydroxylase deficiency accounts for 95% of congenital adrenal hyperplasia (CAH) cases. Newborn screening has allowed for early detection of the disease, and currently, molecular analysis can identify the genotypes of these patients. Phenotype-genotype correlation has been well described in previous studies. In Costa Rica, there is no data about the genetic background of these patients, nor their phenotypic correlation. DESIGN: Observational, retrospective, descriptive study based on the review of patient records who had a diagnosis of CAH and were performed molecular analysis using gene sequencing or MLPA during the period from 2006 to 2018 (N = 58). OBJECTIVE: To describe the clinical and genetic characteristics of CAH patients due to 21-hydroxylase deficiency at the National Children's Hospital "Dr. Carlos Sáenz Herrera", Caja Costarricense de Seguro Social (CCSS) in Costa Rica. RESULTS: 53% (31/58) of the patients were male and 80% (37/46) were born full term; 72% (42/58) had salt wasting phenotype, 9% (5/58) simple virilizing phenotype and 19% (11/58) non-classic phenotype. The most frequent variants were c.292+5G>A in 26% (15/58) of patients and Del/Del in 21% (12/58) of them. CONCLUSIONS: The most frequent mutation in our study population was the c.292+5G>A, which was found in 15/58 patients. This rare variant has only been reported in three other studies so far but as an infrequent mutation in CAH patients. The genetic characteristics of Costa Rican patients differ from what has been documented worldwide and could respond to a founder effect.

Depresión en San Carlos de Bariloche: estudio epidemiológico sobre prevalencia y uso de los servicios de salud mental / Depression in San Carlos de Bariloche: Epidemiological study of prevalence and use of mental health services

RESUMEN INTRODUCCIÓN pocos estudios han evaluado la prevalencia de depresión mayor (DM) en Argentina, y las estimaciones son muy disímiles. El objetivo de la presente investigación fue estimar la prevalencia de DM, la utilización de los servicios de salud y la relación con aspectos sociodemográficos en personas de 18-64 años de San Carlos de Bariloche, Argentina. MÉTODOS se utilizó la Escala de Depresión del Centro de Estudios Epidemiológicos (CESD-R) para evaluar DM en una muestra de 299 personas en 2017 La encuesta comprendió, además, preguntas sociodemográficas y consultó si la persona había visitado a un profesional y recibido tratamiento por problemas de depresión. RESULTADOS la prevalencia de DM fue 5,7% (IC95%: 3,3-8,9). La tasa fue mayor en los estratos de menor nivel socioeconómico. Solamente un 47,1% de los casos de DM habían visitado a un médico por problemas emocionales, nervios o salud mental, con una tasa menor en los estratos de menor nivel socioeconómico. Se encontró mayor prevalencia de DM entre los desempleados y las personas que no trabajaban ni buscaban trabajo. El consumo perjudicial de alcohol o dependencia alcohólica fue más frecuente en individuos con DM (17,6%) que entre aquellos que no la padecían (6,9%). DISCUSIÓN la prevalencia de DM encontrada es similar a la registrada a nivel nacional. Se destaca la importante brecha entre atención y tratamiento. Es necesario fomentar políticas de Salud Pública para acceder a instancias terapéuticas adecuadas con el fin de mejorar la calidad de vida de las personas.

ABSTRACT INTRODUCTION few studies have evaluated major depression (MD) prevalence in Argentina, and estimates are very variable. The goal of this research was to estimate prevalence of MD, health services utilization and relationship with socio-demographic factors in 18- to 64-year-old people from San Carlos de Bariloche. METHODS the Center for Epidemiologic Studies Depression Scale Revised (CESD-R) was used to assess MD in a sample of 299 people in 2017. The questionnaire also inquired about socio-demographic aspects, and asked if people had visited a health care provider and received treatment for depression. RESULTS MD prevalence was 5.7% (CI95%: 3.3-8.9). The rate was higher in lower socio-economic strata. Only 47.1% of MD cases had visited a health care provider for emotional, nervous or mental health problems, with lower rates in lower socio-economic strata. There was a higher risk of MD among unemployed people and those who were neither working nor seeking for a job. Risky alcohol consumption or dependency was more common among MD cases (17.6%) than among non-MD cases (6.9%). DISCUSSION the MD prevalence found is similar to that reported nationwide. The study highlights an important gap between service use and treatment. It is necessary to promote public health policies to provide adequate therapeutic resources with the purpose of improving the quality of life.

Prognostic Factors for Inguinal Lymph Node Involvement and Tumor Recurrence in Squamous Cell Carcinoma of the Penis / Factores pronósticos de compromiso ganglionar inguinal y recaída tumoral en carcinoma escamocelular de pene

Zoom Image Abstract Introduction Penile carcinoma is an aggressive disease with catastrophic consequences that frequently lead to death. Therefore, further knowledge on the prognostic factors that can help identify patients in need of more aggressive treatments becomes essential. Objective To identify the prognostic factors for lymph node (LN) involvement and tumor recurrence in patients diagnosed with squamous cell carcinoma of the penis (SCCP). Methods A retrospective cohort study was conducted. Patients diagnosed and treated for SCCP at Instituto Nacional de Cancerología between 2008 and 2015 were included in the sample. Cases in which no information on recurrence was available for the follow-up were excluded, as well as patients with no initial pathology and those getting penile reconstructions after cancer. Relevant data was retrieved from the medical records of each patient, and a descriptive analysis was performed. Subsequently, this data was used to apply a logistic regression model to determine the potential clinical and histopathological prognostic factors. Results A total of 104 patients were included in the present study. The average age of the sample was 59 years, while the follow-up averaged 24 months per patient. Inguinal lymphadenectomy was performed on 61 patients (59%) during the follow-up. The logistic regression model showed that lymphovascular invasion (odds ratio [OR]: 6.7; 95% confidence interval [95%CI]: 1.2­35) and poor tumor differentiation (OR: 17; 95%CI: 3.2­92) were associated with tumor recurrence. Likewise, the lymphadenectomy procedures showed that lymphovascular invasion was associated with LN involvement (OR: 3.3; 95%CI: 1.1­10). Conclusion Lymphovascular invasion was the strongest prognostic factor observed in our sample, aiding in the prediction of inguinal LN involvement and tumor recurrence in SCCP patients

Introduccion El cáncer de pene es una enfermedad agresiva con consecuencias catastróficas que frecuentemente llevan a la muerte. Por lo tanto, es esencial un mayor conocimiento sobre los factores pronósticos que pueden ayudar a identificar a los pacientes que necesitan tratamientos más agresivos. Objetivo Identificar los factores pronósticos patológicos de compromiso ganglionar inguinal y recaída tumoral en pacientes con carcinoma escamocelular de pene. Métodos Se realizó un estudio de cohorte retrospectivo. Se incluyeron en la muestra pacientes diagnosticados y tratados por carcinoma escamocelular de pene (SCCP) en el Instituto Nacional de Cancerología entre 2008 y 2015. Los casos en los que no había información sobre la recurrencia en el seguimiento fueron excluidos, así como los pacientes sin patología inicial y aquellos que reciben reconstrucciones del pene después del cáncer. Se recuperaron los datos relevantes de los registros médicos de cada paciente, y una descripción fue realizada. Posteriormente, estos datos se utilizaron para aplicar un modelo de regresión logística para determinar los posibles factores pronósticos clínicos e histopatológicos. Resultados Un total de 104 pacientes fueron incluidos en el estudio. La edad promedio de la muestra fue de 59 años, mientras que el seguimiento promedió fue de 24 meses por paciente. La linfadenectomía inguinal se realizó en 61 pacientes (59%) durante el seguimiento. El modelo de regresión logística mostró que la invasión linfovascular (odds ratio [OR]: 6,7; intervalo de confianza del 95% [IC 95%]: 1,2­35) y la pobre diferenciación tumoral (OR: 17; IC 95%: 3,2­92) se asociaron con recurrencia tumoral. Así mismo, los procedimientos de linfadenectomía mostraron que la invasión linfovascular se asoció con afectación de LN. (OR: 3,3; IC 95%: 1,1-10). Conclusión La invasión linfovascular es el factor pronóstico independiente más importante que se asocia de manera independiente con compromiso ganglionar inguinal positivo y recaída tumoral.

Depresión en San Carlos de Bariloche Estudio epidemiológico sobre prevalencia y uso de los servicios de salud mental / Depression in San Carlos de Bariloche: Epidemiological study of prevalence and use of mental health services

INTRODUCCIÓN: pocos estudios han evaluado la prevalencia de depresión mayor (DM) en Argentina, y las estimaciones son muy disímiles. El objetivo de la presente investigación fue estimar la prevalencia de DM, la utilización de los servicios de salud y la relación con aspectos sociodemográficos en personas de 18-64 años de San Carlos de Bariloche, Argentina. MÉTODOS: se utilizó la Escala de Depresión del Centro de Estudios Epidemiológicos (CESD-R) para evaluar DM en una muestra de 299 personas en 2017. La encuesta comprendió, además, preguntas sociodemográficas y consultó si la persona había visitado a un profesional y recibido tratamiento por problemas de depresión. RESULTADOS: la prevalencia de DM fue 5,7% (IC95%: 3,3-8,9). La tasa fue mayor en los estratos de menor nivel socioeconómico. Solamente un 47,1% de los casos de DM habían visitado a un médico por problemas emocionales, nervios o salud mental, con una tasa menor en los estratos de menor nivel socioeconómico. Se encontró mayor prevalencia de DM entre los desempleados y las personas que no trabajaban ni buscaban trabajo. El consumo perjudicial de alcohol o dependencia alcohólica fue más frecuente en individuos con DM (17,6%) que entre aquellos que no la padecían (6,9%). DISCUSIÓN: la prevalencia de DM encontrada es similar a la registrada a nivel nacional. Se destaca la importante brecha entre atención y tratamiento. Es necesario fomentar políticas de Salud Pública para acceder a instancias terapéuticas adecuadas con el fin de mejorar la calidad de vida de las personas

[Sublicinal depression: an overlooked problem]. / Depresión subclínica: un problema no visibilizado.

Subclinical depression is a worldwide spread disease with significant impact on health and life quality. The goal of this study is to assess its prevalence, service utilization, and to identify the most vulnerable groups in 18 to 64 years-old residents of San Carlos de Bariloche, Argentina. A survey was administered to a stratified sample of the study population. The CESD-R scale was applied to establish the diagnosis. Sociodemographic and health-care service utilization information was collected as well. The prevalence of subclinical depression was 10% (CI 95%: 6.9%-14.0%). A trend of higher prevalence was observed among younger subjects, and in lower socioeconomic neighborhoods. One third of subjects with subclinical depression had previously consulted a health professional and less than half of them had been correctly diagnosed. Early detection and treatment of subclinical depression is key to diminishing the associated disability and to prevent its evolution to major depression. It is necessary to implement early detection strategies, specifically directed to the most vulnerable groups: younger people and lower socioeconomic strata.

Integration of environmental aspects in modelling and optimisation of water supply chains.

Climate change becomes increasingly more relevant in the context of water systems planning. Tools are necessary to provide the most economic investment option considering the reliability of the infrastructure from technical and environmental perspectives. Accordingly, in this work, an optimisation approach, formulated as a spatially-explicit multi-period Mixed Integer Linear Programming (MILP) model, is proposed for the design of water supply chains at regional and national scales. The optimisation framework encompasses decisions such as installation of new purification plants, capacity expansion, and raw water trading schemes. The objective is to minimise the total cost incurring from capital and operating expenditures. Assessment of available resources for withdrawal is performed based on hydrological balances, governmental rules and sustainable limits. In the light of the increasing importance of reliability of water supply, a second objective, seeking to maximise the reliability of the supply chains, is introduced. The epsilon-constraint method is used as a solution procedure for the multi-objective formulation. Nash bargaining approach is applied to investigate the fair trade-offs between the two objectives and find the Pareto optimality. The models' capability is addressed through a case study based on Australia. The impact of variability in key input parameters is tackled through the implementation of a rigorous global sensitivity analysis (GSA). The findings suggest that variations in water demand can be more disruptive for the water supply chain than scenarios in which rainfalls are reduced. The frameworks can facilitate governmental multi-aspect decision making processes for the adequate and strategic investments of regional water supply infrastructure.

Metastasectomy of Abdominal Wall Lesions due to Prostate Cancer Detected Through PET/CT Gallium 68-PMSA: First Case Report.

Introducing the topic of abdominal wall metastasis secondary to prostate cancer with a reminder of the disease's rarity, being the first published case. This article is about a 66 year old patient diagnosed with prostate cancer [cT2aNxMx iPSA: 5,6 ng/ml Gleason 3+3, (Grade 1 Group)], treated with radical prostatectomy as well as accompanied with amplified pelvic lymphadenectomy, who subsequently presented metastatic lesions to the abdominal wall diagnosed with PET/CT Gallium 68-PMSA technique and treated with abdominal metastasectomy with adequate short term results.

Guía práctica para disección e identificación de estructuras anatómicas a nivel facial en un animal porcino / Practical guide for dissection and identification of anatomical structures of the face in pigs

La investigación en los modelos animales de experimentación es una herramienta que permite la adquisición de conocimientos previo a la aplicación de los mismos en un ser humano. El objetivo de este trabajo es presentar una base ilustrativa y guiada de disección de las estructuras más importantes a nivel facial en un animal porcino para que sirva de base para futuros trabajos de experimentación, pues se encontró la necesidad de tener una guía clínica al iniciar un trabajo de investigación experimental a nivel facial en este tipo de animal(AU)

Research using experimental animal models is a tool that enables knowledge to be acquired before it is applied in human beings. Clinical guidelines are needed when starting experimental research work on animals. The purpose of this paper is to present an illustrative guide to the dissection of the most important facial structures in pigs, so that it can serve as a basis for future experimental works(AU)

Multivalent binding of nanocarrier to endothelial cells under shear flow.

We investigate the effects of particle size, shear flow, and resistance due to the glycocalyx on the multivalent binding of functionalized nanocarriers (NC) to endothelial cells (ECs). We address the much- debated issue of shear-enhanced binding by computing the binding free-energy landscapes of NC binding to the EC surface when the system is subjected to shear, using a model and simulation methodology based on the Metropolis Monte Carlo approach. The binding affinities calculated based on the free-energy profiles are found to be in excellent agreement with experimental measurements for different-sized NCs. The model suggests that increasing the size of NCs significantly increases the multivalency but only moderately enhances the binding affinities due to the entropy loss associated with bound receptors on the EC surface. A significant prediction of our model is that under flow conditions, the binding free energies of NCs are a nonmonotonic function of the shear force. They show a well-defined minimum at a critical shear value, and thus quantitatively mimic the shear-enhanced binding behavior observed in various experiments. More significantly, our results indicate that the interplay between multivalent binding and shear force can reproduce the shear-enhanced binding phenomenon, which suggests that under certain conditions, this phenomenon can also occur in systems that do not show a catch-bond behavior. In addition, the model also suggests that the impact of the glycocalyx thickness on NC binding affinity is exponential, implying a highly nonlinear effect of the glycocalyx on binding.

Optimizing endothelial targeting by modulating the antibody density and particle concentration of anti-ICAM coated carriers.

Targeting of drug carriers to cell adhesion molecules expressed on endothelial cells (ECs) may improve treatment of diseases involving the vascular endothelium. This is the case for carriers targeted to intercellular adhesion molecule 1 (ICAM-1), an endothelial surface protein overexpressed in many pathologies. In order to optimize our design of anti-ICAM carriers, we have explored in this study the influence of two carrier design parameters on specific and efficient endothelial targeting in vitro and in vivo: carrier dose and density of targeting molecules (antibodies-Ab) on the carrier surface. Using radioisotope tracing we assessed the role of these parameters on the biodistribution of model polymer carriers targeted to ICAM-1 ((125)I-anti-ICAM carriers) in mice. Increasing the carrier dose enhanced specific accumulation in the lung vasculature (a preferential endothelial target) and decreased non-specific hepatic and splenic uptake. Increasing the Ab density enhanced lung accumulation with minimally reduced liver and spleen uptake. These studies account for the influence of blood hydrodynamic forces on carrier binding to endothelium, relevant to arterioles, venules and larger vessels. Yet, carriers may rather bind to the extensive capillary bed where shear stress is minimal. We used fluorescence microscopy to determine binding kinetics of FITC-labeled anti-ICAM carriers in static conditions, at the threshold found in vivo and conditions mimicking low vs high ICAM-1 expression on quiescent vs activated ECs. Binding to activated ECs reached similar saturation with all tested Ab densities and carrier concentrations. In quiescent cells, carriers reached ~3-fold lower binding saturation, even at high carrier concentration and Ab density, and carriers with low Ab density did not reach saturation, reflecting avidity below threshold. Binding kinetics was positively regulated by anti-ICAM carrier concentration and Ab density. Counterintuitively, binding was faster in quiescent ECs (except for carriers with high Ab density and concentration), likely due to fast saturation of fewer binding sites on these cells. These results will guide optimization of ICAM-1-targeted carriers, e.g., in the context of targeting healthy vs diseased endothelium for prophylactic vs therapeutic interventions.

Effect of Glycocalyx on Drug Delivery Carriers Targeted to Endothelial Cells.

Animal models have shown that coupling ligands, targeted to endothelium surface receptors, with drug delivery carriers (DDC) can optimize the treatment of diseases by specific vascular delivery. The endothelium is exposed to hydrodynamic forces that modulate the expression of these cellular adhesion molecules (CAMs) and affect the structural and biological activity of endothelial cells (ECs). In order to investigate how delivery of targeted DDC can be optimized, we investigated carriers binding to flow adapted ECs under flow conditions. Comparison of live ECs to fixed cells from our previous experiments give insight into the effect of receptor motility on the cell surface as well as the effect of other factors such as glycocalyx (a protective layer of carbohydrates on the surface of cells) and actin remodeling. A flow chamber model is used to investigate how DDC size variation alters binding under flow conditions. Binding experiments were done with and without glycocalyx in order to elucidate its protective effect. Using fluorescence microscopy we determined the real time binding and rolling speeds of DDC under flow conditions. We also demonstrate the presence of glycocalyx and image actin filament remodeling. The binding of 1 µm carriers to ECs decreased after flow adaptation, in both non-activated and TNF-α activated ECs compared to non-flow adapted live cells. After removal of the glycocalyx by degrading enzymes binding increased in quiescent ECs, but only increased in activated cells after 2 hr of perfusion with particles. The binding with 100 nm carriers also decreased after flow adaptation but to a lesser extent and partially increased after enzyme degradation. These experiments give insight as to how tunable affinity parameters can be optimized to enhance therapeutic capabilities.

Enhancing private sector engagement: Louisiana's business emergency operations centre.

Public sector emergency management is more effective when it coordinates its efforts with private sector companies that can provide useful capabilities faster, cheaper and better than government agencies. A business emergency operations centre (EOC) provides a space for private sector and non-governmental organisations to gather together in support of government efforts. This paper reviews business-related EOC practices in multiple US states and details the development of a new business EOC by the State of Louisiana, including lessons learned in response to the May 2010 oil spill.

A boundary element model of the transport of a semi-infinite bubble through a microvessel bifurcation.

Motivated by a developmental gas embolotherapy technique for selective occlusion of blood flow to tumors, we examined the transport of a pressure-driven semi-infinite bubble through a liquid-filled bifurcating channel. Homogeneity of bubble splitting as the bubble passes through a vessel bifurcation affects the degree to which the vascular network near the tumor can be uniformly occluded. The homogeneity of bubble splitting was found to increase with bubble driving pressure and to decrease with increased bifurcation angle. Viscous losses at the bifurcation were observed to affect the bubble speed significantly. The potential for oscillating bubble interfaces to induce flow recirculation and impart high stresses on the vessel endothelium was also observed.

Flow dynamics, binding and detachment of spherical carriers targeted to ICAM-1 on endothelial cells.

Vascular drug delivery by administration of carriers targeted to endothelial surface determinants, such as intercellular adhesion molecule (ICAM-1), holds considerable promise to improve disease treatment. As a model to define elusive factors controlling the interplay between carrier motion in the bloodstream and its interactions with molecular targets in the endothelial wall, we used 1 mum beads coated with ICAM-1 monoclonal antibody (Ab) at 370, 1100 or 4100 Ab/microm2. Carriers were perfused at two shear rates over resting or activated endothelial cells, expressing minimum vs. maximum ICAM-1 levels, to determine carrier rolling, binding and detachment. Even at 0.1 Pa and 4100 Ab/microm2, carriers attached only to activated cells (21 fold increase over resting cells), ideal for specific drug targeting to sites of pathology. Binding was increased by raising the Ab surface density on the carrier, e.g., 59.4+/-11.1% increase for carriers having 4100 vs. 1100 Ab/microm2, as a consequence of decreased rolling velocity. Carrier binding was stable even under a high shear stress: carriers with 1100 and 4100 Ab/microm2 withstand shear stress over 3 Pa without detaching from the cells. This is further supported by theoretical modeling. These results will guide vascular targeting of drug carriers via rational design of experimentally tunable parameters.

Two Babinski signs in seropositive (HAM) and seronegative tropical spastic paraparesis.

Tropical spastic paraparesis (TSP) may or may not be associated to HTLV-I antibodies and is usually characterized by clinical and pathological spinal cord abnormalities at thoracic levels. We present here five Brazilian patients who had typical chronic idiopathic spastic paraparesis; two of them were HTLV-I seropositive (HAM) and three HTLV-I seronegative (TSP) -associated-myelopathy. Three out of these five patients also displayed clinical supraspinal involvement, indeed, platysma muscle hypotrophy or atrophy (the Babinski plus sign). These findings support the view that clinical involvement in HAM and TSP is wider than the spinal cord abnormalities usually considered. Possible non-infectious co-factors (e.g., mycotoxins) may be involved in disease pathogenesis in a multistep process of viruses, toxins and environment which may account for serological differences found in this group of patients.

Two Babinski signs in seropositive (HAM) and seronegative tropical spastic paraparesis / Dos signos de Babinski en pacientes con paraparesia espástica tropical seropositiva (HAM) y seronegativa

Tropical spastic paraparesis (TSP) may or may not be associated to HTLV-I antibodies and is usually characterized by clinical and pathological spinal cord abnormalities at thoracic levels. We present here five Brazilian patients who had typical chronic idiopatic spastic paraparesis; two of them were HTLV-I seropositive (HAM) and three HTLV-I seronegative (TSP) - associated-myelopathy. Three out of these five patients also displayed clinical supraspinal involvement, indeed, platysma muscle hypotrophy or atrophy (the Babinski plus sign). These findings support the view that clinical involvement in HAM and TSP is wider than the spinal cord abnormalities usually considered. Possible non-infectious co-factors (e.g., mycotoxins) may be involved in disease pathogenesis in a multistep process of viruses, toxins and environment which may account for serological differences found in this group of patients.

La paraparesia espástica tropical (PET), puede o no estar asociada con anticuerpos contra el HTLV-I y se caracteriza, usualmente, por alteraciones clínicas y patológicas a nivel de region dorso-lumbar de la medula espinal. Presentamos cinco pacientes brasileros, quienes tuvieron hallazgos típicos de paraparesia espástica crónica idiopática; dos de ellos tuvieron (HAM) y tres no tuvieron (TSP) anticuerpos, en el suero, contra el HTLV-I. En tres pacientes se encontró hipotrofia o atrofia del músculo platisma (signo de Babinski plus), demostrando que el compromiso clínico en pacientes con HAM y TSP se extiende más allá de la médula espinal torácica. Cofactores (por ejemplo, micotoxinas) podrían estar involucrados en la patogénesis de esta enfermedad, en una interacción compleja de virus, toxinas y medio ambiente, lo cual explicaría las diferencias serológicas encontradas en este grupo de pacientes.

Dilación, dilatación e inclinación en hidrocefalia de presión normal / Delay, Dilation, and Bending in Normal Pressure Hydrocephalus

Introducción: La hidrocefalia idiopática de presión normal es una entidad conformada por una triada de signos clínicos que incluyen alteraciones de la marcha, de la cognición y del control de esfínteres urinarios, concomitantes con un aumento de líquido cefalorraquídeo con presión normal, hidrocefalia y atrofia cortical, sin causa identificable. Métodos y resultados: Reporte de caso. Paciente colombiano, de género masculino y 26 años de edad, con un cuadro clínico de tres años de evolución: presentaba los criterios clínicos descritos anteriormente, además de una notoria afectación extrapiramidal, caracterizada por distonía focal, incluyendo pleurotonos. Sumado a lo anterior, presentó labilidad emocional, alteraciones de memoria, personalidad que pasó de introvertida a compulsiva, trastornos del sueño, aislamiento y disminución de la reacción al peligro. Inicialmente se diagnosticó depresión, y luego, esquizofrenia paranoide. Recibió olanzapina sin mejoría de su cuadro neuropsiquiátrico. Algunos de estos signos y síntomas mejoraron luego de punción lumbar, la cual tuvo una presión normal, confirmándose así el diagnóstico clínico, con posibilidades terapéuticas promisorias. Conclusión: La hidrocefalia de presión normal se debe considerar en personas jóvenes, cuya sintomatología y exámenes de neurolaboratorio no cumplan con los fundamentos de la psiquiatría basada en la evidencia.

Introduction: Normal pressure hydrocephalus is a clinical entity characterized by a triad of clinical signs including gait abnormalities, cognitive disorders and sphincter dysfunction. It parallels an increased cerebrospinal fluid pressure, hydrocephalus and brain cortical atrophy. No detectable cause is a must. Methods and results: Case report. This is a Colombian male patient, 26 years-old, who had the clinical findings commented above starting three years before our evaluation. He also presented notorious extrapyramidal involvement, mostly focal dystonia including pleorotonus. Besides this, mood lability, memory disorders, personality changes turning from introverted to compulsive, sleep disorders, isolation and fearlessness were also present. Initially, depression was diagnosed and then paranoid schizophrenia was considered. Olanzapine was given with no benefits on his neuropsychiatric disorder. Some of these signs and symptoms improved after a lumbar puncture which had a normal pressure. It confirmed the diagnosis and offered very promising therapeutic possibilities. Conclusion: Normal pressure hydrocephalus must be considered in young people who have clinical symptoms and neurolaboratory findings out of the range of those commonly considered to be part of evidence-based psychiatry.

Aerocefalia: despegue y aterrizaje de una nueva entidad clínica: [carta al editor] / Takeoff and landing headache a new clinical syndrome: [letter to the editor]

La migraña es aun un problema frecuente de salud pública alrededor del mundo. En Colombia, se han hecho múltiples estudios neuroepidemiológicos utilizando, usualmente, el protocolo neuroepidemiológico desarrollado por la organización mundial de la salud para países en vía de desarrollo (1-4) y hoy se sabe que la prevalencia de migraña allí es de 71,2 por mil habitantes, con predominio del género femenino 3.5: 1 (3); así mismo, sus efectos deletéreos en las actividades diarias y en la calidad de vida de los colombianos han sido también ampliamente demostrados (4), quedan por definir posibles factores aeroespaciales asociados. En este sentido, un estudio prospectivo hecho en Francia, en individuos migrañosos y no-migrañosos, encontró que de 2-4 por ciento de los entrevistados reportaron que el viajar en tren o en avión les precipitaba un episodio de migraña (5). Esto llama la atención, porque a pesar de lo extensivo que han sido los estudios epidemiológicos en Colombia, en ninguno de ellos se detectaron cefaleas en viajeros de aviones comerciales, algo que al parecer corresponde a nuevas variantes descritas en los comienzos del siglo XXI...