The Effect of Ultrasound on the Extraction and Functionality of Proteins from Duckweed (Lemna minor).

The inclusion of protein in the regular human diet is important for the prevention of several chronic diseases. In the search for novel alternative protein sources, plant-based proteins are widely explored from a sustainable and ecological point of view. Duckweed (Lemna minor), also known as water lentil, is an aquatic plant with potential applications for human consumption due to its protein content and carbohydrate contents. Among all the conventional and novel protein extraction methods, the utilization of ultrasound has attracted the attention of scientists because of its effects on improving protein extraction and its functionalities. In this work, a Box-Behnken experimental design was proposed to optimize the alkaline extraction of protein from duckweed. In addition, an exploration of the effects of ultrasound on the morphological, structural, and functional properties of the extracted protein was also addressed. The optimal extraction parameters were a pH of 11.5 and an ultrasound amplitude and processing time of 60% and 20 min, respectively. These process conditions doubled the protein content extracted in comparison to the value from the initial duckweed sample. Furthermore, the application of ultrasound during the extraction of protein generated changes in the FTIR spectra, color, and structure of the duckweed protein, which resulted in improvements in its solubility, emulsifying properties, and foaming capacity.

Experiencia en 24 pacientes con técnica de traqueostomía con incisión vertical por una limitación de la visibilidad secundaria a equipo de protección ocular en el área de cuidados intensivos respiratorios COVID / Experience in 24 patients with vertical incision tracheostomy technique for a lowing visibility for protection security equipment in COVID intensive care respiratory / Experiência em 24 pacientes com tecnica de traqueostomia por incisão vertical devido à visibilidade limitada secundária a equipamentos de proteção ocular na área de terapia intensiva respiratória COVID

Resumen: El uso de equipo de protección personal, en especial protección ocular, limita la visión al momento de llevar a cabo procedimientos quirúrgicos en área COVID. Estas limitaciones nos obligan a hacer modificaciones en procedimientos habituales, en esta ocasión se realizó una modificación a la incisión habitual del procedimiento de traqueostomía abierta. Se hizo una modificación descrita en bibliografías previas en la orientación de la incisión, cambiando la orientación habitual de la incisión horizontal a una incisión vertical, conservando el resto de la técnica y disección de planos habituales así como colocación de cánula. La modificación de la técnica tiene como objetivo disminuir el riesgo de complicaciones ocasionadas por la poca visión por parte del equipo de protección personal. Dentro de estas complicaciones se incluyen disminuir el riesgo de lesión a grandes vasos que por anatomía se encuentran en sitio anatómico a procedimiento, mejorar las condiciones de visión al ser un único plano de disección muscular y aponeurótico, disminuir sangrado transoperatorio al incidir en línea media, con ello reducir el riesgo de complicaciones y mejorar las condiciones de visión del operador.

Abstract: The use of personal protective equipment, especially eye protection, limits vision when performing surgical procedures in the COVID area, these limitations force us to make modifications to usual procedures, on this occasion a modification is made to the usual incision of the procedure open tracheostomy. A modification described in previous bibliographies was made, modifying the orientation of the incision, changing the usual orientation of the horizontal incision to a vertical incision, preserving the rest of the technique and dissection of the usual planes as well as placement of the cannula. The modification of the technique aims to reduce the risk of complications caused by poor vision due to personal protective equipment, within these complications to reduce the risk of injury to large vessels that by anatomy are in the anatomical site of the procedure, improve the vision conditions as it is a single muscle and aponeurotic dissection plane, reduce transoperative bleeding by incising in the midline, thereby reducing the risk of complications, improving the operator's vision conditions and reducing the risk of infection of personal health.

Resumo: O uso de equipamentos de proteção individual, principalmente proteção ocular, limita a visão ao realizar procedimentos cirúrgicos na área COVID. Essas limitações nos obrigam a fazer modificações nos procedimentos usuais, nesta ocasião foi feita uma modificação na incisão usual do procedimento de traqueostomia aberta. Realizou-se uma modificação descrita em bibliografias anteriores modificando a orientação da incisão, mudando a orientação usual da incisão horizontal para uma incisão vertical, mantendo o resto da técnica e dissecção dos planos habituais, bem como a colocação da cânula. A modificação da técnica visa diminuir o risco de complicações causadas pela má visão por equipamentos de proteção individual, dentro dessas complicações diminuir o risco de lesão de grandes vasos que pela anatomia estão no local anatômico do procedimento, melhorar as condições de visão ao ser um único plano de dissecção muscular e aponeurótica, reduzindo o sangramento intraoperatório por incisão na linha média, diminuindo assim o risco de complicações, melhorando as condições de visão do operador.

Does size matter? An analysis of the niche width and vulnerability to climate change of fourteen species of the genus Crotalus from North America.

The niche comprises the set of abiotic and biotic environmental conditions in which a species can live. Consequently, those species that present broader niches are expected to be more tolerant to changes in climatic variations than those species that present reduced niches. In this study, we estimate the amplitude of the climatic niche of fourteen species of rattlesnakes of the genus Crotalus to evaluate whether those species that present broader niches are less susceptible to the loss of climatically suitable zones due to the projected climate change for the time period 2021-2040. Our results suggest that for the species under study, the breadth of the niche is not a factor that determines their vulnerability to climatic variations. However, 71.4% of the species will experience increasingly inadequate habitat conditions, mainly due to the increase in temperature and the contribution that this variable has in the creation of climatically suitable zones for most of these species.

La rentabilidad del viraje en nadadoras del estilo libre

La investigación se refiere a un estudio de la rentabilidad de la acción del viraje del estilo libre en nadadoras escolares. El objetivo para la investigación se centró en evaluar las características temporales durante la acción del viraje en nadadoras de la categoría 13 y 14 años de la provincia de Sancti Spíritus. Para la recogida de la información, se utilizaron los métodos del nivel empírico: la observación científica, así como la de medición. Se utilizaron dos cámaras de videos, ubicadas en serie, y una cámara subacuática marca Sony. Para el análisis temporal, se requirió del software Kinovea, ver 0.9.3. Se aplicó el test de 15 m. para comprobar la rentabilidad del viraje. Se pudo comprobar una pobre efectividad de este elemento técnico en el estilo libre en las nadadoras evaluadas, lo que mostró, de forma generalizada, deficiencias durante la fase de impulso y se comprobó la formación de ángulos muy abiertos de las piernas que favoreció un déficit en la utilización de la potencia de las piernas durante el empuje de la pared, aspecto este que ayudó a disminuir el deslizamiento y comenzar a realizar los movimientos de salida a la superficie de forma prematura, aumentó el tiempo de forma general en la ejecución del viraje, concluyendo que para las categorías escolares es oportuno obtener ángulos entre las articulaciones de tobillos, rodillas y cadera en el rango de los 90° y 110° al momento de iniciar el impulso de la pared.

A pesquisa diz respeito a um estudo sobre a rentabilidade da ação de viragem em estilo livre em nadadores escolares. O objectivo da investigação foi centrado na avaliação das características temporárias durante a ação de viragem em nadadores de 13 e 14 anos de idade na província de Sancti Spíritus. Para a recolha de informação, foram empregues métodos empíricos: observação científica e medição. Foram instaladas duas câmaras de vídeo, colocadas em série, e uma câmara subaquática Sony. Para a análise temporal, foi utilizado o software Kinovea, ver 0.9.3. O teste de 15 m foi executado para verificar a relação custo-benefício da curva. Foi possível constatar uma baixa eficácia deste elemento técnico no estilo livre dos nadadores avaliados, que mostraram, em geral, deficiências durante a fase de impulso e a formação de ângulos de pernas muito abertos que favoreceram um défice na utilização da força das pernas durante o impulso para a parede, Este aspecto permitiu reduzir o deslizamento e começar a realizar os movimentos de saída para a superfície antecipadamente, aumentou o tempo total na execução da curva, concluindo-se que para as categorias escolares é adequado obter ângulos entre o calcanhar, o joelho e as articulações da anca na gama de 90° e 110° no momento de iniciar o impulso da parede.

The research refers to a study of the profitability of the freestyle turning action in school swimmers. The objective of the research was focused on evaluating the temporal characteristics during the action of the turn in swimmers of the 13 and 14 years old category in the province of Sancti Spíritus. For the collection of information, the empirical level methods used were: scientific observation, as well as measurement. Two video cameras, placed in series, and a Sony underwater camera were used. For the temporal analysis, the Kinovea software, ver 0.9.3, was used. The 15 m test was applied to check the profitability of the turn. It was possible to verify a poor effectiveness of this technical element in the freestyle in the swimmers evaluated, which showed, in a generalized way, deficiencies during the impulse phase and the formation of very open angles of the legs that favored a deficit in the use of the power of the legs during the wall push, This aspect helped to decrease the sliding and to begin to perform the exit movements to the surface prematurely, increased the time in general in the execution of the turn, concluding that for the school categories it is appropriate to obtain angles between the ankle, knee and hip joints in the range of 90° and 110° at the moment of initiating the wall push.

Estudio Transversal Hispano-Ecuatoriano: Discapacidades derivadas de Ictus cerebral / Hispano- Ecuadorian Cross-Sectional Study: Disabilities derived from cerebral stroke

INTRODUCCIÓN: En la actualidad el ictus es considerado una de las principales causas de discapacidad en el mundo. Globalmente 5 millones de personas adquieren discapacidad permanente cada año por esta causa; hasta el 30% de los pacientes afectados padecen algún tipo de discapacidad. El manejo temprano del paciente puede disminuir las secuelas derivadas de las lesiones. El objetivo de este estudio es conocer si existen diferencias en las discapacidades derivadas de ictus entre las ciudades de Madrid (España) y Cuenca (Ecuador), en relación a una atención temprana programada. MATERIALES Y MÉTODOS: El presente, es un estudio observacional, descriptivo, de corte transversal, multicéntrico. La muestra estuvo conformada por 40 pacientes diagnosticados de ACV, 20 pertenecientes al Grupo Cuencano, de Ecuador (GC) y 20 al Grupo Matritense, de España (GM). Los datos fueron obtenidos de las historias clínicas. Se compararon ambos grupos mediante la prueba Chi-cuadrado (X2) de Pearson para cada variable estudiada. RESULTADOS: En el GM el 80% de los ACV fueron de origen isquémico, en el GC fueron el 90%, sin asociación significativa. En los dos grupos el mayor porcentaje de secuelas se dieron por afectación del territorio de la arteria cerebral media (ACM). No se evidenció diferencia significativa en el porcentaje de discapacidades derivadas de ictus entre los grupos, el grupo matritense de España presentó una menor tasa de discapacidades derivadas que fue del 45%, frente al grupo cuencano de Ecuador que tuvo un 76% de capacidades derivadas, pero la diferencia no fue significativa (p=0.069); sin embargo la asociación entre el porcentaje de exitus entre los grupos si tuvo asociación estadísticamente significativa (p=0.003). CONCLUSIÓN: No se encontró asociación significativa en cuanto a etiología, factores de riesgos y características clínicas del Ictus entre los grupos. No hay diferencias significativas en las secuelas derivadas de ictus entre los grupos, pero si hay diferencias significativas en relación al porcentaje de exitus con la aplicación de un programa tipo "Código Ictus".

BACKGROUND: Currently, stroke is one of the main causes of disability in the world. Globally 5 million people acquire permanent disability each year for this cause; up to 30% of affected patients suffer from some type of disability. Early management of the patient can reduce the sequelae derived from the injury. The aim of this study is to find out if there are differences in disabilities derived from strokes, between the cities of Madrid (Spain) and Cuenca (Ecuador), in association with programmed early patient care. METHODS: This is an observational, descriptive, cross-sectional, multicenter study. The sample consisted of 40 patients diagnosed with stroke, 20 from Cuenca, Ecuador, and 20 from Madrid, Spain. Data was obtained from the patient's medical records. Both groups were compared using Pearson's Chi-square test (Χ2) for each studied variable. RESULTS: in the Madrid Group 80% of the strokes were ischemic, in the Cuenca Group 90% of the strokes were ischemic, there is not significant association. In both groups the highest percentage of sequelae occurred due to injury of the middle cerebral artery (MCA). There was no significant difference in the percentage of disabilities derived from stroke between the groups, the Madrid Group had a lower rate of derived disabilities (45%), compared to Cuenca Group (76%), but the differences was not significant (p=0.069); however, the association between the death percentage among the groups was statistically significant (p=0.003). CONCLUSION: No significant association was found in terms of etiology, risk factors and clinical characteristics of stroke between the groups. There are no significant differences in the sequelae derived from stroke between the groups, but there is significant difference in terms of death percentage between the groups, with the application of "Código Ictus" type of program.

Long-term Amelioration of OCD Symptoms in a Patient with Chronic Consumption of Psilocybin-containing Mushrooms.

Obsessive Compulsive Disorder (OCD) is a chronic neuropsychiatric condition, characterized by obsessions and compulsions, which is usually disabling for the suffering individual. The first-line treatment is not effective in all patients. There is evidence showing the effectiveness of psilocybin and psilocybin-containing mushrooms in the treatment of OCD symptoms. We present the case of a male adult with OCD who showed a clinically meaningful reduction of his OCD symptomatology after the consumption of psilocybin-containing mushrooms. Future research will determine if psilocybin and other psychoactive compounds of psilocybin-containing mushrooms are effective and safe for the treatment of OCD.

Caso Clínico: Diastomatomielia, una Forma Rara de Disrafia Espinal Oculta / Case Report: Diastomatomyelia, a Rare Form of Hidden Spinal Disraphy

INTRODUCCIÓN: La diastematomielia es una malformación raquimedular, un desdoblamiento sagital de la médula espinal, frecuentemente por debajo de la quinta vértebra dorsal; siendo una presentación rara de disrafismo espinal (menos del 3 %), más frecuente en el sexo femenino (3:1), se presenta entre los 10 y 76 años de edad. Puede ser asintomática y un descubrimiento incidental. Su diagnóstico es básicamente radiológico. CASO CLÍNICO: Paciente de sexo masculino de 20 años de edad, con cuadro de lumbalgia crónica, habiendo sido tratado por diferentes especialistas y tratamientos. Se solicitó estudios de imagen con la finalidad de esclarecer el diagnóstico; en la exploración física reportó zona de hipertricosis localizada a nivel lumbosacro y escoliosis dorsolumbar leve. EVOLUCIÓN: Los estudios radiológicos, tomográficos y de resonancia magnética evidenciaron la fusión de los cuerpos vertebrales L2 - L3 (espolón óseo), asociando anomalías de fusión de los elementos posteriores con división del canal raquídeo, y en médula espinal dos hemimédulas. Al momento el paciente se encuentra en controles periódicos por el servicio de traumatología con tratamiento clínico. CONCLUSIONES: No es sencillo el diagnóstico, frecuentemente se realiza en etapas tardías, cuando las alteraciones neurológicas son explícitas. Es preciso permanecer alerta ante alteraciones cutáneas de la línea media; dado que puede ser indicadora de diastematomielia o de cualquier disrafismo oculto.

BACKGROUND: Diastematomyelia is a spinal cord malformation consisting of a sagittal split spinal cord, often below the fifth thoracic vertebra and being a rare presentation of occult spinal dysraphism (less than 3 %), and it is more common in females (3:1), in the age of 10 and 76 years old. It can be asymptomatic and be discovered incidentally. It is basically radiological diagnosis. CASE REPORT: A 20 - years old, male patient presents chronic and unwilling back pain treatment, which has been treated by different specialists and treatments. If was requested image exams in order to clarify the diagnosis. Physical examination zone localized hypertrichosis and lumbosacral thoracolumbar scoliosis reported. EVOLUTION: The computed tomography and magnetic resonance showed the fusion of the L2 - L3 (bone spurs) associated with abnormalities fusion of the posterior elements with division of the spinal canal into two compartments, vertebral bodies and spinal cord in two hemicords. At present, the patient is under periodic controls by the traumatology service with clinical treatment. CONCLUSIONS: It is not easy diagnosis diastematomyelia often is performed in later stages, when neurological disorders are already flowered. Because of this, must remain alert to any skin disorder midline, it can be indicative of diastematomyelia or any of the hidden dysraphisms.

Evidence of niche shift and invasion potential of Lithobates catesbeianus in the habitat of Mexican endemic frogs.

Invasive alien species are one of most severe threats to biodiversity and natural resources. These biological invasions have been studied from the niche conservatism and niche shifts perspective. Niche differentiation may result from changes in fundamental niche or realized niche or both; in biological invasions, niche differences between native and non-native ranges can appear through niche expansion, niche unfilling and niche stability. The American bullfrog Lithobates catesbeianus is an invasive species that can have negative impacts on native amphibian populations. This research examines the climate niche shifts of this frog, its potential range of expansion in Mexico and the risk of invasion by bullfrog in the habitats of 82 frog species endemic to Mexico, that based on their climatic niche similarity were divided in four ecological groups. The results indicate that species in two ecological groups were the most vulnerable to invasion by bullfrog. However, the climate niche shifts of L. catesbeianus may allow it to adapt to new environmental conditions, so species from the two remaining groups cannot be dismissed as not vulnerable. This information is valuable for decision making in prioritizing areas for conservation of Mexican endemic frogs.

Proficiency test for calibration of well-type chambers using two types of 192Ir sources / Ensayo de aptitud para la calibración de cámaras de pozo usando dos tipos de fuentes de 192Ir

The Secondary Standard Dosimetry Laboratory of Cuba has implemented the calibration methodology of well-type chambers using the high dose rate sources. The use of different source types, at the hospital site as a modification of the procedure using other source types in a permanent facility of the primary laboratory leads to the need to evaluate the performance of the secondary procedure for calibration. The present paper describes the proficiency test to Cuban laboratory by making a comparison of dosimetry standards used in Germany and Cuba.

El Laboratorio Secundario de Calibración Dosimétrica de Cuba ha implementado una metodología para calibrar cámaras de pozo utilizando fuentes de de altas tasas de dosis. El uso de diferentes tipos de fuentes, como parte de una modificación del procedimiento con otro tipo de fuente usada en una instalación permanente del laboratorio primario, provocó la necesidad de evaluar el desempeño del procedimiento secundario de calibración. El trabajo describe el ensayo de aptitud al laboratorio cubano mediante un ejercicio de comparación entre los patrones dosimétricos de Alemania y Cuba.

Caracterización estructural del factor estimulador de colonias de los granulocitos, Hebervital / Structural Characterization of Granulocyte Colony Stimulating Factor, Hebervital

El factor estimulador de colonias de granulocitos (G-CSF) es un medicamento que pertenece a un grupo de proteínas hematopoyéticas. Se obtiene por vía recombinante en el Centro de Ingeniería Genética y Biotecnología, de Cuba, desde el año 2000 y es comercializado como Hebervital. Se indica a pacientes con neoplasias afectados de neutropenia febril, con tratamiento mielosupresor, seguido de trasplante de la médula ósea, entre otros. Induce alteraciones en la actividad biológica de los neutrófilos maduros que pudieran aumentar la defensa del huésped en respuesta a patógenos, como bacterias y hongos. En este trabajo se realizó un análisis específico del G-CSF para determinar su pureza y caracterización; además, se demostró su posible comparabilidad con productosde otras firmas comerciales. El patrón de bandas de las muestras en la electroforesis, así como el porcentaje del área y los perfiles cromatográficos bajo la curva en la cromatografía líquida de alta resolución, fueron similares entre los diferentes productos. La digestión enzimática y la separación proteolítica de los péptidos generaron mapas peptídicos reproducibles y de elevada similitud con el Neupogen(AU)

Granulocyte Colony Stimulating Factor (G-CSF) is member of haemopoietic proteins group used in medication. Itis obtained by recombination technique since 2000 at the Center for Genetic Engineering and Biotechnology ofCuba, and it is commercialized as Hebervital. It is recommended for patients with malignant tumors, affected by febrile neutropenia, bone marrow suppressor treatment followed by bone marrow transplant, among others. It induces disorders in the biological activity of the mature neutrophils that could increase host defense in responseto pathogens like bacterial and fungal infections. The objective of this project was to perform a specific analysis todetermine G-CSF purity and characterization and to demonstrate its comparability with other commercial products. The sample bands pattern in SDS-PAGE, the area percentage and the chromatographic profiles under the curves,in reverse phase high performance liquid chromatographic were similar. The enzymatic digestion and separationby proteolysis of peptides generated reproduces peptide's maps of great similarity with Neupogen(AU)

Micosis fungoide en estadio tumoral. Presentacion de un caso / Mycosis fungoide in the tumoral stage. Case presentation

Introducción: La micosis fungoide es una neoplasia maligna originada en los linfocitos T, de curso crónico y caracterizada por lesiones que pueden ser máculas (eritematosas, hipo e hiperpigmentadas), pápulas, placas, parches a veces poiquilodérmicos, nódulos o tumores que pueden ulcerarse y llegan ocasionalmente a la eritrodermia. Tienden a permanecer en la piel por largos períodos de tiempo con lesiones polimorfas aunque en estadios avanzados puede afectar ganglios linfáticos y órganos internos. Aunque sigue siendo la forma más común de todos los linfomas primarios cutáneos de células T (44 por ciento), sigue siendo una enfermedad rara. Objetivos: Nos propusimos revisar y analizar la evidencia científica disponible en la literatura mundial para determinar las manifestaciones clínicas más frecuentes de la Micosis fungoide, así como los medios diagnósticos más empleados en la actualidad y su tratamiento. Presentación del caso: Se presentó un paciente de 49 años de edad con hallazgos clínicos e histopatológicos de micosis fungoide en estadio tumoral. Se hace una revisión de la presentación clínica de la enfermedad, su histopatología y tratamiento. Conclusiones: La micosis fungoide sigue siendo una enfermedad rara, sobre todo, en etapa temprana, ya que puede diagnosticarse erróneamente como dermatitis de contacto, psoriasis o dermatitis atópica, por lo que es importante un adecuado diagnóstico.

Introduction: Mycosis Fungoides is a malignant neoplasia originated at T- Lymphocytes of chronic course. It is characterized by lesions that could be macules (erythrodermic, hypo or hyper pigmented), papules, plaques, sometimes poikilodermic patches, nodes or tumours that can be festered arriving occasionally to erythroderma. They use to last in the skin for long periods of time with polymorph lesions though in advanced periods they can affect lymphatic ganglions and internal organs. Despite the fact that Mycosis Fungoides is the most common form among the primary cutaneous lymphomas of T cells (44 percent) it still qualifies as a rare disease.Objectives: We had as principal aim to review and analyze the available scientific evidence in world literature to determine the most frequent clinical manifestations of Mycosis Fungoides as well as the diagnostic means and treatments mostly used at present. Case presentarion: It's a 49 years old patient with clinical and histopathology finds of Mycosis Fungoides in terminal stage. It is made a brief review of the clinical introduction of this disease, its histopathology and treatment. Conclusions: Mycosis Fungoides is still a rare disease mainly in the early stage, that's why it is very important to make an exact diagnosis of it since it can be diagnosed incorrectly as a contact or atrophic dermatitis.

Micosis fungoide en estadio tumoral: presentacion de un caso / Mycosis fungoide in the tumoral stage. Case presentation

Introducción: La micosis fungoide es una neoplasia maligna originada en los linfocitos T, de curso crónico y caracterizada por lesiones que pueden ser máculas (eritematosas, hipo e hiperpigmentadas), pápulas, placas, parches a veces poiquilodérmicos, nódulos o tumores que pueden ulcerarse y llegan ocasionalmente a la eritrodermia. Tienden a permanecer en la piel por largos períodos de tiempo con lesiones polimorfas aunque en estadios avanzados puede afectar ganglios linfáticos y órganos internos. Aunque sigue siendo la forma más común de todos los linfomas primarios cutáneos de células T (44 por ciento), sigue siendo una enfermedad rara. Objetivos: Nos propusimos revisar y analizar la evidencia científica disponible en la literatura mundial para determinar las manifestaciones clínicas más frecuentes de la Micosis fungoide, así como los medios diagnósticos más empleados en la actualidad y su tratamiento. Presentación del caso: Se presentó un paciente de 49 años de edad con hallazgos clínicos e histopatológicos de micosis fungoide en estadio tumoral. Se hace una revisión de la presentación clínica de la enfermedad, su histopatología y tratamiento. Conclusiones: La micosis fungoide sigue siendo una enfermedad rara, sobre todo, en etapa temprana, ya que puede diagnosticarse erróneamente como dermatitis de contacto, psoriasis o dermatitis atópica, por lo que es importante un adecuado diagnóstico(AU)

Introduction: Mycosis Fungoides is a malignant neoplasia originated at T- Lymphocytes of chronic course. It is characterized by lesions that could be macules (erythrodermic, hypo or hyper pigmented), papules, plaques, sometimes poikilodermic patches, nodes or tumours that can be festered arriving occasionally to erythroderma. They use to last in the skin for long periods of time with polymorph lesions though in advanced periods they can affect lymphatic ganglions and internal organs. Despite the fact that Mycosis Fungoides is the most common form among the primary cutaneous lymphomas of T cells (44 percent) it still qualifies as a rare disease. Objectives: We had as principal aim to review and analyze the available scientific evidence in world literature to determine the most frequent clinical manifestations of Mycosis Fungoides as well as the diagnostic means and treatments mostly used at present. Case presentarion: It's a 49 years old patient with clinical and histopathology finds of Mycosis Fungoides in terminal stage. It is made a brief review of the clinical introduction of this disease, its histopathology and treatment. Conclusions: Mycosis Fungoides is still a rare disease mainly in the early stage, that's why it is very important to make an exact diagnosis of it since it can be diagnosed incorrectly as a contact or atrophic dermatitis(AU)

Características demográficas y clínicas asociadas a la dependencia a benzodiacepinas en pacientes psiquiátricos / Demographic and clinical features related to benzodiazepine dependence in psychiatric patients

Introduction Inappropriate use and dependence to prescription drugs has been considered as a growing health problem in recent years. It has been recognized that benzodiazepines (BZD) are one of the most commonly prescribed drugs due to their rapid therapeutic effect, high efficacy and favorable side effect profile when compared to other psychotropic medications. Despite the desirable therapeutic actions of BZD, mainly for the treatment of anxiety disorders, concerns about the dependence producing or addictive nature of these drugs have been expressed for decades. BZD dependence, unlike dependence to other substances, is a condition generally circumscribed to a therapeutic framework. It is well known that BZD use generally starts legitimately by a medical prescription for the treatment of anxiety symptoms or insomnia. Persons with psychiatric disorders are at a greater health risk for BZD dependence than other groups as BZD are highly used for the treatment of several psychiatric symptoms. BZD dependence in these patients may have a negative clinical impact in the medical treatment of the primary psychiatric disorder and may also affect patients' quality of life as the BZD dependence is added as a comorbid diagnosis that also requires clinical management. In this way, the need for clinical useful information for the prevention or early detection of BZD dependence emerges. Although inconsistent associations have been encountered in the scientific literature, some sociodemographic variables, such as gender and level of education, as well as the characteristics of BZD use, have been identified as potential risk factors for the development of BZD dependence. This information is of easy access for the mental health professional during the initial or subsequent clinical interview with patients, and if significant findings are obtained in Mexican psychiatric patients, these variables may become useful clinical tools for a closer follow-up of those patients with high risk of presenting BZD dependence. Objective To determine sociodemographic variables and characteristics of BZD use that may be risk factors for the development of BZD dependence in a sample of psychiatric patients from Mexico City. Method Subjects. Subjects were consecutively recruited at the outpatient services of the Instituto Nacional de Psiquiatría Ramón de la Fuente (INPRF) in Mexico City. All patients with BZD consumptions were included indistinctly of their psychiatric diagnosis of attendance in the institution. All patients gave their written informed consent after receiving a comprehensive explanation of the nature of the study. The Ethics Review Board of the INPRF approved the study. Assessment procedure Psychiatric diagnoses were made with the Structured Clinical Interview for DSM-IV Axis I Disorders (SCID-I) and BZD dependence was determined with an adapted version of the substance dependence section of the SCID-I designed to assess BZD use exclusively. Sociodemographic features and characteristics of BZD use were registered in a previously designed format and information was obtained by a personal interview with each patient and main caregiver. The Benzodiazepine Dependence Questionnaire in its Mexican version (BDEPQ-MX) is a self-administered questionnaire used to assess the subjective experience with BZD in the last month in three main areas: perceived dependence, BZD pleasant effects and perceived need of BZD consumption. Results The sample comprised 150 psychiatric patients. A total of 70.0% (n=105) were women and 30.0% (n = 45) were men. Their mean age was 45.9±14.1 with a mean educational level of 11.6±3.9 years. Diagnoses of the sample were mainly anxiety disorders (n = 76, 50.7%) and affective disorders (38.0%). According to the SCID-I, a total of 73 (48.7%) patients met the diagnostic criteria for BZD dependence. Sixty seven percent of the men included in the study reported BZD dependence in contrast to 41.0% of the women. Also, patients with BZD dependence exhibited a higher level of education and a longer time consumption of BZD. A longer duration of BZD consumptions was the main indicator for BZD dependence conferring a risk 10.4 higher for its development. Male gender and psychiatric diagnoses different to anxiety and affective disorders were also significant predictors for BZD dependence. Discussion Numerous potential risk factors relating to BZD dependence have been found and our results support the influence of sociodemographic features and characteristics of BZD consumption for dependence development in a Mexican sample of psychiatric patients. In general, it has been described that men are more prone to substance abuse and dependence and our results showed this same pattern. Nevertheless, this result must be replicated in future studies as for BZD dependence men and women may exhibit similar patterns of consumption and dependence. High rates of BZD prescription, coupled with an elevated risk of substance dependence in diagnoses different to anxiety disorders, highlight the need for a careful review of the costs-benefits of BZD use for the treatment of anxiety emergent symptoms, as other additional medications with lower dependence effect can be used to minimize the potential risk of BZD dependence in these patients. One of the biggest controversies surrounding BZD use has been its long-term use, which has been reported and replicated in our studies as the main indicator for BZD dependence development. Treatment with BZD may be useful for short-term periods of time, and specific goals and objectives of their therapeutic benefits must be established since the initial treatment plans for each patient. The clinical relevance of the present study relies in standing out the high prevalence of BZD dependence found in patients treated with BZD and had not been treated for this comorbid condition. It is important to promote in the mental health professional attendance team strategies for the prevention and early detection of BZD dependence in psychiatric patients.

Introducción El uso inapropiado de los fármacos de prescripción y la dependencia a ellos conforman un problema de salud que va en aumento en la actualidad. A diferencia de la dependencia a otras sustancias, la dependencia a BZD es una condición generalmente circunscrita a un marco terapéutico, ya que el primer contacto frecuentemente se presenta en un contexto clínico. Por el es necesario contar con información que pudiera ser de utilidad clínica para prevenir o detectar de forma oportuna la dependencia en pacientes tratados con BZD. Objetivo Determinar las variables sociodemográficas relacionadas con el patrón de consumo de BZD que pudieran ser predictoras de dependencia a BZD en una muestra de pacientes psiquiátricos de la Ciudad de México. Método Sujetos. Se reclutó a los pacientes que acudieron de forma consecutiva al servicio de Consulta Externa del Instituto Nacional de Psiquiatría Ramón de la Fuente (INPRF) que presentaron uso de BZD, indistintamente del diagnóstico psiquiátrico por el que acudieron a recibir atención especializada. Instrumentos El diagnóstico psiquiátrico y de dependencia a BZD de los pacientes se realizó mediante la entrevista SCID-I. Los principales datos sociodemográficos y las características del consumo de BZD fueron registrados en un formato diseñado ad hoc. El Cuestionario de Dependencia a Benzodiazepinas en su versión para México (BDEPQ-MX) se utilizó para evaluar la experiencia subjetiva del consumo de BZD. Resultados Se incluyó a un total de 150 pacientes con una edad promedio de 45.9±14.1 años. El 48.7% de los pacientes presentaron dependencia a BZD. Los pacientes con dependencia a BZD fueron con mayor frecuencia hombres, con una mayor escolaridad y presentaron un mayor tiempo de consumo. El ser hombre, presentar un diagnóstico distinto a un trastorno de ansiedad o afectivo y tener un mayor tiempo de consumo de BZD fueron los principales factores predictores de dependencia en el presente estudio. Discusión Los hallazgos del presente estudio sustentan la influencia de variables demográficas y del consumo de BZD en el riesgo para desarrollar dependencia. Se observa un mayor riesgo para el desarrollo de dependencia en los hombres. Para los pacientes con diagnósticos distintos a los trastornos de ansiedad es necesario evaluar el costo-beneficio de utilizar las BZD como parte del tratamiento para el manejo de síntomas relacionados con la ansiedad. El uso crónico de BZD fue el principal predictor de dependencia en la presente investigación, lo que pone de manifiesto la importancia de restringir el uso de BZD a periodos cortos de tiempo, estableciendo metas y objetivos claros de sus beneficios terapéuticos. Es fundamental fomentar en el personal médico y paramédico la prevención y detección oportuna de la dependencia a BZD en pacientes psiquiátricos.

[Clinical outcome of a bilateral tibial pylon fracture treated with a minimally invasive technique]. / Resultado clínico de la fractura de pilón tibial bilateral tratada con técnica mínimamente invasiva.

INTRODUCTION: Intraarticular fractures of the distal tibia are traumas accounting for 1% of lower extremity fractures. The tibial pylon fracture is a metaphyseal lesion that spreads inside the ankle and is difficult to treat with any method. CASE REPORT: This is the clinical outcome at one year, of a 40-year-old male patient with a bilateral tibial pylon fracture, treated with the MIPO (minimally-invasive plate osteosynthesis) technique. RESULTS: It was possible to reduce complications such as bone and soft tissue infections, early arthrosis and pseudoarthrosis, and to achieve the patient's prompt return to activities of daily living, thus reducing the costs to the patient and the institution. DISCUSSION: Tibial pylon fractures are not frequent, let alone bilateral ones. They represent a big challenge to both the orthopedic surgeon and the patient, mainly due to the risk of injury to the skin cover. The MIPO technique modified the natural history of this type of lesion in the patient reported herein.

Lesiones graves en las manos debido a artefactos pirotécnicos y/o explosivos / Serious injuries on the hands because of pyrotechnics and / or explosives

Las lesiones ocacionadas por artefactos pirotécnicos y/o explosivos son altamente incapacitantes, constituyendo un problema de salud pública. Se estudiaron 25 paciente, 96 por ciento del sexo masculino, el grupo etario mas afectado estuvo entre 16 y 25 años con 40 por ciento. 92 por ciento eran dextromanos: la mano izquierda se lesionó en un 72 por ciento. Las lesiones más frecuentes fueron las amputaciones parciales en el 19,23 por ciento y las heridas del espacio interdigital en 17,95 por ciento; el pulgar fue afectado en el 96 por ciento. La influencia del alcohol estuvo presente en el 80 por ciento, siendo estos procedencia ilegal en el 84 por ciento.

Alternativa antifúngica en derivados del furfural: cepas salvajes cándida albicans

La búsqueda de nuevos fármacos de origen natural o semi-sintéticos ha sido también una constante batalla contra los gérmenes que atacan al hombre, de ahí la posibilidad del presente estudio en aportar soluciones novedosas en este aspecto. Se realiza un estudio experimental con la sustancia A-51 para el cálculo de la MCI frente a cepas control y salvajes del Género Cándida albicans y establecer la comparación con otros antimicóticos comerciales. Frente a las primeras es de 6.5µg/ml, y ante las salvajes es de 5,63µg/ml. En la experiencia con cepas salvajes los valores de MCI-50 para A-51 son menores que los de G-1 y Anfotericina B y casi iguales a los Miconazol, mientras que lo de MCI-90 son mayores que los de G-1 y muy cercanos a los valores de Anfotericina B e iguales a los obtenidos para Miconazol(AU)

Piodermitis: tratamiento coadyuvante con vacuna estafiloestreptocócica / Pyodermitis: auxilliary treatment with bovine staphylo-streptococcal vaccine

Se efectuó un estudio analítico desde enero de 1999 hasta igual mes del 2001, basado en 112 pacientes con piodermitis, sensibilizados a estafilococos o estreptococos, o a ambos gérmenes, en las consultas de Alergia y Dermatología del Hospital Clinicoquirúrgico Docente Infantil Sur de Santiago de Cuba, con edades comprendidas entre 1 a 14 años, a los cuales se les confeccionó una historia clínica especializada y una planilla de vaciamiento, donde se recogieron las principales variables de interés para la investigación: edad, sexo, diagnóstico, exámenes complementarios (hemograma, glucemia, heces fecales seriados) y estudios inmunológicos (IgG y test de Roseta). Las evaluaciones se hicieron al iniciar y finalizar ambos tipos de tratamiento, de donde se derivó que el hiposensibilizante fue más efectivo que el convencional al lograrse una mayor eficacia clínica, pues 55 niños (98,2 por ciento) mejoraron con éste y sólo 44 (78.7 por ciento) con el convencional(AU)

[Risk factors for Giardia lamblia infection in children in daycare centers in Havana, Cuba]. / Factores de riesgo de la infección por Giardia lamblia en niños de guarderías infantiles de Ciudad de la Habana, Cuba.

We conducted a longitudinal study on giardiasis in three daycare centers in Havana City for a period of 18 months and described a group of children with a "predisposition" or tendency towards re-infection with Giardia lamblia. This group was found to be more frequently associated with clinical symptoms such as diarrhea. A case-control study was designed to determine whether socioeconomic factors and hygiene were associated with this phenomenon. We found no differences between the groups with regard to overcrowding rates, number of persons per bed, absence of certain electric appliances, mother's schooling, or mean family income. However, there were proportionally more fathers with less than complete secondary education among cases as compared to controls. In addition, we found no differences in lack of hand-washing before eating and after defecation; however, we found a higher percentage of families who washed vegetables insufficiently among predisposed children. Finally, a lower percentage of families with predisposed children boiled their water. Our results demonstrate the important role of water as a vehicle for transmission of giardiasis and the importance of various epidemiologic factors.

Factores de riesgo de la infección por Giardia lamblia en niños de guarderías infantiles de Ciudad de La Habana, Cuba / Risk factors for Giardia lamblia in children in daycare centers in Havana, Cuba

En un estudio longitudinal sobre giardiasis desarrollado durante 18 meses en tres guarderías infantiles de Ciudad de La Habana, describimos un grupo de niños con tendencia o "predisposición" a la infección por Giardia lamblia; a los que se les encontró con síntomas clínicos más asociados a las diarreas. Este estudio de casos y controles se desarrolló para conocer si algunos factores socioeconómicos y hábitos higiénicos estaban asociados con este fenómeno. No se encontraron diferencias entre ambos grupos en las tasas de hacinamiento, el índice de personas por cama, en la carencia de determinados equipos eléctricos, en el nivel escolar de las madres, y en el promedio del ingreso familiar; sin embargo, predominó una frecuencia mayor de padres con nivel escolar menor de 12 grado en los casos que en los controles. No se encontraron diferencias entre ambos grupos en cuanto a la ausencia de lavado de manos antes de comer y después de defecar, pero se encontró un mayor porcentaje de lavado incorrecto de vegetales, y una menor frecuencia del hábito de hervir el agua de consumo en las familias de los casos. Estos resultados demuestran el papel del agua como vehículo de transmisión en la giardiasis y la importancia de algunos factores epidemiológicos