Abstract Introduction: Multiple pregnancies, mostly monochorionic ones, have higher risks for complications such as selective growth restriction and fetal-fetal transfusion syndrome, but cerebrovascular events without fetal loss diagnosed prenatally are infrequent, the reason why we are presenting this case. Case report: 25-year-old woman in her second pregnancy, with biamniotic monochorionic twin pregnancy. During ultrasound follow-up, intrauterine growth restriction was documented at 27 + 5 weeks of gestation. One week later twin 2 ultrasound shows severe growth restriction and image suggestive of a massive intracerebral hemorrhagic event, intermittent flow in the umbilical artery and fetal anemia. Given the imminent risk of death, the patient was referred to the emergency department, and given the clinical deterioration, gestation was terminated in week 29. The affected twin died 6 days later after birth. Conclusion: Monochorionic twin pregnancy has a high risk of complications, and strict follow-up is necessary. Hemorrhagic events are rare and may be associated with placental, fetal and maternal pathologies.

Resumen Introducción: Las gestaciones múltiples, principalmente las monocoriales, tienen mayor riesgo de complicaciones como restricción selectiva del crecimiento y síndrome de transfusión feto-fetal, siendo de baja frecuencia los eventos vasculares cerebrales diagnosticados prenatalmente sin pérdida fetal, por lo cual reportamos el siguiente caso. Caso clínico: Mujer de 25 años en su segunda gestación, con embarazo gemelar monocorial biamniótico. Durante el seguimiento ecográfico de la semana 27 + 5 se encuentran fetos con restricción del crecimiento intrauterino y una semana después se observa el gemelo 2 con restricción severa del crecimiento e imagen ecográfica sugestiva de evento hemorrágico intracerebral masivo, flujo intermitente en la arteria umbilical y anemia fetal. Dado el riesgo inminente de muerte, se remite al servicio de urgencias. Por deterioro clínico se finaliza la gestación en la semana 29. El gemelo afectado fallece al sexto día de vida. Conclusión: La gestación gemelar monocorial tiene un alto riesgo de complicaciones, por lo que requiere un seguimiento estricto. Los eventos hemorrágicos son poco frecuentes y pueden estar asociados a patologías placentarias, fetales y maternas.

Resumen Introducción: El cáncer de endometrio ocupa el sexto lugar en incidencia del cáncer en mujeres. La caracterización molecular de este cáncer permite optimizar la estratificación de riesgo para mejorar el tratamiento de las pacientes. Objetivo: Determinar el perfil molecular TCGA de pacientes con cáncer de endometrio en Bogotá, D.C., Colombia. Método: Estudio descriptivo en una cohorte de pacientes con cáncer de endometrio. Las mutaciones en los exones 9 a 14 del gen POLE fueron identificadas mediante amplificación por reacción en cadena de la polimerasa, seguida de secuenciación Sanger y análisis bioinformático. La expresión de las proteínas MMR y p53 se identificó mediante inmunohistoquímica. Resultados: Se incluyeron 40 pacientes con una mediana de edad de 66 años. El 15% presentaron mutaciones en el dominio exonucleasa de POLE. El 32% de las pacientes que no presentaron mutaciones manifestaron deficiencia en el sistema MMR. El 43,47% de las pacientes sin mutaciones en POLE ni alteración del sistema MMR presentaron alteración de la proteína p53. Conclusiones: La población de cáncer de endometrio analizada presenta un perfil molecular TCGA similar a lo reportado para otras poblaciones.

Abstract Introduction: Endometrial cancer ranks sixth in cancer incidence among women. Its molecular characterization allows for a more precise risk stratification with the aim of improving patient treatment. Objective: To determine the TCGA molecular profile of patients with endometrial cancer in Bogota, Colombia. Method: A descriptive study of a cohort of patients with endometrial cancer. The expression of MMR proteins and p53 was identified through immunohistochemistry. Mutations in exons 9 to 14 of the POLE gene were identified through polymerase chain reaction amplification, followed by Sanger sequencing and bioinformatic analysis. Results: Forty patients were included in the study, with a median age of 66 years, 15% of them exhibited mutations in the exonuclease domain of POLE, while 32% of patients without mutations showed deficiency in the MMR system. Forty three percent of patients without mutations in POLE or MMR alterations showed aberrant p53 protein expression. Conclusions: The analyzed population of endometrial cancer presents a TCGA molecular profile similar to that reported for other populations.

RESUMEN: Antecedentes: La pandemia por enfermedad por coronavirus 2019 (COVID-19) podría aumentar los trastornos mentales del personal de salud en formación. Objetivo: Identificar el nivel de riesgo para la salud mental en personal de salud en formación durante la pandemia COVID-19 en Querétaro. Material y métodos: Estudio transversal descriptivo en un hospital de segundo nivel. El tamaño de muestra fue 220; el muestreo fue no probabilístico por conveniencia. Los participantes firmaron carta de consentimiento informado. Se aplicó un instrumento para tamizaje de salud mental en COVID-19 durante junio del 2020. El análisis estadístico se realizó con medidas de tendencia central, frecuencias, porcentajes e intervalos de confianza al 95%. Resultados: La edad promedio fue 25.67 ± 3.61; 52.7% fueron mujeres, 65.9% correspondió a médicos internos de pregrado. De acuerdo con el estado civil, 90.9% estaba soltero y 53.2% pertenecía a familia nuclear. 25.9% fue originario de Querétaro. La frecuencia global de nivel de riesgo se reportó para violencia en 43.2%, suicidio 15%, consumo de sustancias 35.9%, estrés agudo 48.2%, ansiedad generalizada 45%, distanciamiento y enojo 44.1%, evitación y tristeza 35.5%, y ansiedad de salud 40.5%. Conclusiones: Se presentó prevalencia importante para condicionantes de alta letalidad: violencia, suicidio y consumo de sustancias.

ABSTRACT: Background: The coronavirus disease 2019 (COVID-19) pandemic may increase mental disorders in training health practitioners. Objective: To identify the level of mental health risk in training health practitioners during the COVID-19 pandemic in Querétaro. Material and methods: Cross-sectional descriptive study in a second level hospital. The sample size was 220, the sampling was non-probabilistic for convenience. The participants signed an informed consent letter. An instrument for mental health screening in COVID-19 was applied during June 2020. The statistical analysis was performed with measures of central tendency, frequencies, percentages and 95% confidence intervals. Results: The average age was 25.67 ± 3.61, 52.7% were women, 65.9% were undergraduate medical interns. According to marital status, 90.9% are single and 53.2% live with a nuclear family. 25.9% were originally from Querétaro. The global frequency of risk level was reported for violence in 43.2%, suicide 15%, substance use 35.9%, acute stress 48.2%, generalized anxiety 45%, estrangement and anger 44.1%, avoidance and sadness 35.5% and health anxiety 40.5%. Conclusions: An important prevalence was presented for conditions of high lethality: violence, suicide and substance use.

Resumen La afectación cardíaca por tumor carcinoide (síndrome de Hedinger) sigue siendo una causa importante de morbilidad y mortalidad entre los pacientes con síndrome carcinoide y tumores neuroendocrinos metastásicos. El estudio de imagen inicial ante la sospecha clínica es el ecocardiograma transtorácico, el cual es importante para la detección temprana de la afectación cardíaca. La cirugía cardíaca, en casos apropiados, es la única terapia definitiva para el tumor carcinoide con afectación cardíaca y mejora los síntomas del paciente y la supervivencia. El tratamiento es complejo y multidisciplinario; el estado cardíaco, el síndrome hormonal y la carga tumoral son fundamentales para guiar el momento óptimo de la cirugía. Se presenta el caso de una paciente joven, con síndrome de Hedinger con afectación valvular tricúspide y pulmonar, quien recibió tratamiento quirúrgico y tuvo evolución exitosa.

Abstract Cardiac carcinoid tumor involvement (Hedinger’s syndrome) remains a major cause of morbidity and mortality among patients with carcinoid syndrome and metastatic neuroendocrine tumors. The initial imaging study in case of clinical suspicion is the transthoracic echocardiogram, which is important for the early detection of cardiac involvement. Cardiac surgery, in appropriate cases, is the only definitive therapy for carcinoid tumor with cardiac involvement and improves patient symptoms and survival. Treatment is complex and multidisciplinary; cardiac status, hormonal syndrome, and tumor burden are essential to guide the optimal timing of surgery. The case of a young female patient with Hedinger’s syndrome with tricuspid and pulmonary valve involvement, who received surgical treatment and had a successful evolution.

Resumen El melanoma es el cáncer de piel con mayor tasa de mortalidad a nivel mundial. Se han descrito 4 subtipos principales de melanoma cutáneo: el melanoma de extensión superficial, el melanoma nodular, el léntigo maligno y el melanoma lentiginoso acral. Existen diferencias raciales y geográficas en la distribución y frecuencia de estos subtipos. En caucásicos, el riesgo es mayor para melanomas de piel expuesta a radiación UV, ya sea de forma crónica o intermitente. En contraste, en asiáticos, afroamericanos e hispanos, la tendencia es mayor en sitios anatómicos no expuestos (palmas y plantas), encabezando el melanoma lentiginoso acral en una proporción mayor. Usualmente, este melanoma se diagnostica de manera tardía y en estadios avanzados, por cual se asocia con un peor pronóstico. La presente revisión pretende brindar una visión general sobre el conocimiento del melanoma lentiginoso acral, describiendo aspectos como la epidemiología, los factores de riesgo asociados, las características genéticas y los factores pronósticos.

Abstract Melanoma is the cutaneous cancer with the highest mortality worldwide. Four main subtypes of cutaneous melanoma have been described: superficial spreading melanoma, nodular melanoma, lentigo maligna melanoma, and acral lentiginous melanoma. There are racial and geographical differences in the distribution and frequency of these subtypes. In Caucasians, the risk is higher to develop melanoma on skin exposed to UV radiation, either chronically or intermittently. In contrast, in Asians, African Americans, and Hispanics, there is a greater tendency towards unexposed anatomical sites (palms and soles), which is called acral lentiginous melanoma. This melanoma is usually diagnosed in advanced stages, and therefore has a worse prognosis. This review aims to provide an update on what is known about acral lentiginous melanoma, mainly describing its epidemiology, risk factors associated with genetic characteristics, and prognosis.

Resumo Os concretos apresentam alto potencial de uso nas mais diversas áreas da construção civil e suas propriedades podem ser melhoradas através da utilização de materiais alternativos por substituição ou adição ao cimento Portland. A diatomita é um material sedimentar composto principalmente por sílica e impurezas amorfas e possui granulometria muito fina, alta porosidade e baixa massa específica. Foram produzidos concretos em proporção de 1:1:2 (cimento: areia: brita) com adição de diatomita em níveis de 5% e 10% em massa de cimento e relação água/cimento de 0,54. As propriedades físico-mecânicas dos concretos foram avaliadas por meio dos ensaios de resistência à compressão e absorção de água por imersão. Também foram realizados ensaios de difratometria de raios X e microscopia eletrônica de varredura para análises das principais fases na pasta de cimento. Os resultados indicaram que a adição de diatomita no concreto aumentou a resistência à compressão devido ao teor de sílica no material e reduziu levemente a porosidade.

Abstract Concretes present great potential to be used in many areas of civil construction. Their properties can be improved by substitution or addition of alternative materials to the Portland cement. The diatomite is a sedimentary material composed mainly by silica and amorphous impurities, presenting very fine particle size, high porosity, and low specific mass. Concrete was produced in a ratio of 1:1:2 (cement: sand: gravel) with the addition of diatomite at contents of 5% and 10% by cement weight and a water/cement ratio of 0.54. The physico-mechanical properties of the concretes were evaluated by tests of compressive strength and water absorption by immersion. Also, X-ray diffraction and scanning electron microscopy were carried out to analyze the main phases in the cement paste. The results indicated that the addition of diatomite in the concrete increased the compressive strength due to the silica content in the material and reduced slightly the porosity.

Resumen El cuy (Cavia porcellus) es una especie que tiene importancia social y cultural en la región sur occidental de Colombia. El objetivo de este trabajo fue identificar el comportamiento de variables productivas y reproductivas del cuy en Nariño y Putumayo. Se aplicó una encuesta en 404 sistemas productivos de los municipios de Pasto-Nariño y Colón, San Francisco, Santiago y Sibundoy-Putumayo. Los datos fueron procesados en el programa IBM-SPSS-Statistics® V. 20.0- 2011. La distribución de la población de cuyes correspondió a cruces de varias líneas con ascendencia de: Criolla-Perú-Andina 61,4%, Criolla-14,8%, sin identificar 13,4%, Perú 9,65% y Andina 0,74%. La edad a la primera monta (meses) fue menor para Perú (5,1) y Andina (4,5) que en animales criollos (5,3). El número partos/hembra/año en las líneas Perú y Andina fue de 3,7 en hembras criollas fue de 3,4. El 97,3% de los productores han establecido grupos de monta donde la relación macho: hembras, por líneas fue de 1:6, 1:8 y 1:4 para Criolla, Perú y Andina respectivamente. Los pesos promedio (g) al nacimiento, destete y beneficio fueron: 222, 413 y 1330 (Criolla), 197, 390 y 1259 (Perú) y 125, 450 y 1300 (Andina) respectivamente. La edad al destete (días) fue de 24,5 (Criollos), 19,3 (Perú) y 18,3 días (Andina). Se evidenció predominancia en el uso de líneas criollas y/o cruces. Las líneas Perú y Andina reportaron mayor eficiencia reproductiva, la línea criolla presentó una mayor eficiencia productiva. Por el potencial del sistema es acertado realizar una caracterización más amplia.

Abstract The guinea pig (Cavia porcellus) is a species of social and cultural importance in the southwestern region of Colombia. However, information on zootechnical variables is under development. The objective of this work was to identify the behavior of lines, productive and reproductive variables of guinea pigs in Nariño and Putumayo. A survey was applied in 404 productive systems of the municipalities of Pasto-Nariño and Colón, San Francisco, Santiago and Sibundoy-Putumayo. The data were processed in the program IBM-SPSS-Statistics® V. 20.0-2011. The distribution of lines corresponded to crosses: Criolla-Peru-Andina 61.4%, Criolla-14.8%, unidentified line 13.4%, Peru 9.65% and Andina 0.74%. The age at first mating (months) was lower for the Peruvian (5.1) and Andean (4.5) lines than in Creole animals (5.3). The number of births/ females/years in the Peruvian and Andean lines was 3.7 in Creole females was 3.4. The 97.3% of the producers have established groups of mount where the relation male: females, by lines was of 1:6, 1:8 and 1:4 for Criolla, Peru and Andina respectively. The average weights (g) at birth, weaning and benefit were: 222, 413 and 1330 (Criolla), 197, 390 and 1259 (Peru) and 125, 450 and 1300 (Andina) respectively. The age at weaning (days) was 24.5 (Criollos), 19.3 (Peru) and 18.3 days (Andina). It was evidenced predominance in the use of Creole lines and/or crosses. The Peruvian and Andean lines reported greater reproductive efficiency, the Creole race presented a greater productive efficiency. Due to the potential of the system, it is pertinent to carry out a broader characterization.

Resumo A cobaia (Cavia porcellus) é uma espécie de importância social e cultural na região sudoeste da Colômbia. No entanto, a informação sobre as variáveis zootécnicas está em desenvolvimento. O objetivo deste trabalho foi identificar o comportamento das variáveis do linhas, produtivas e reprodutivas das cobaias em Nariño e Putumayo. Foi aplicado um levantamento em 404 sistemas produtivos dos municípios de Pasto-Nariño e Colón, São Francisco, Santiago e Sibundoy-Putumayo. Os dados foram processados no programa IBM-SPSS-Statistics® V. 20.0-2011. A distribuição da população correspondeu a cruzamentos de várias linhagens com ascendência de: Crioulo-Peru-Andina 61,4%, Crioulo-14,8%, biótipo não identificado 13,4%, Peru 9,65% e Andina 0,74%. A idade no primeiro acasalamento (meses) foi menor para os biótipos Peru (5,1) e andinas (4,5) do que em crioulo (5,3). O número de nascimentos/ fêmea/ano nos biótipos peru e andino foi de 3,7 em fêmeas crioulas foi de 3,4. 97,3% dos produtores estabeleceram grupos de acasalamento onde a proporção macha/ fêmea em linhas foi de 1:6, 1:8 e 1:4 para o crioulo, peru e andino respectivamente. Os pesos médios (g) no nascimento, desmame e benefício foram: 222, 413 e 1330 (crioulo), 197, 390 e 1259 (peruano) e 125, 450 e 1300 (andino), respectivamente. A idade de desmame (dias) foi de 24,5 (Crioulo), 19,3 (Perú) e 18,3 dias (Andina). Foi comprovada predominância no uso de linhas e/ou cruzamentos crioulos. As linhas Peru e Andinas relataram maior eficiência reprodutiva, a linha crioula apresentou maior eficiência produtiva. Devido ao potencial do sistema, é aconselhável realizar uma caracterização mais ampla.

Abstract A study on how chemistry teachers of six public institutions in Bucaramanga-Colombia incorporate Information and Communication Technologies (ITC) in the teaching-learning processes in their lectures is presented. Questionnaires were applied to six chemistry professors and 210 students between 15 and 20 years of age. In addition, structured interviews were conducted with teachers. The study revealed that the videos and articles, followed by the development of classes with the use of Power Point, are the ways in which ICT are often incorporated into the teaching-learning chemistry processes. The most common topics for using ICT are properties of gases, properties of materials, chemical reactions, bonds, polymers, petroleum, rubber and the carbon atom. Teachers expressed that they never planned a class involving the use of software programs, tutorials or simulators in chemistry. The results show that there is limited use of ICT in the teaching chemistry.

Resumen Se presenta un estudio sobre cómo los profesores de química de seis instituciones públicas de Bucaramanga-Colombia se integran a la nueva cultura digital en sus clases. Para tal propósito se aplicaron cuestionarios a 210 estudiantes y seis profesores de química. Además se realizaron entrevistas estructuradas a los maestros. El estudio reveló que los videos y artículos, seguido del desarrollo de clases usando PowerPoint son las formas de uso más frecuente de las Tecnologías de la Información y la Comunicación (TIC) en la enseñanza-aprendizaje de la química. Las temáticas en las que se han incorporado han sido: propiedades de gases, propiedades de la materia, reacciones químicas, enlaces, polímeros, petróleo, caucho y átomo de carbono. Los maestros manifestaron que nunca habían planeado clases que involucraran el uso de programas, tutoriales o simuladores para química. Los resultados permiten concluir que hay un limitado uso de las TIC en la enseñanza de la química.

Resumo A criação bem sucedida de animais em condições de laboratório para processos comerciais ou experimentais é uma cadeia complexa que inclui vários fatores de estresse (ex. coleta e transporte) que tem como consequência a redução das condições naturais do animal, prejuízos econômicos e resultados biológicos inconsistentes. Desde a invasão do bivalve Limnoperna fortunei (Dunker, 1857) na América do Sul, vários estudos têm sido realizados para ajudar no controle e gestão dessa praga em plantas industriais que utilizam água. Relativamente pouca atenção tem sido dada ao processo de criação de L. fortunei em laboratório, sua condição quando exposta ao estresse e sua aclimatação a condições de laboratório. Considerando estes aspectos, os objetivos deste estudo foram: (i) investigar as respostas fisiológicas de L. fortunei submetidos ao processo de depuração e subsequente transporte (sem água/condição seca) em duas temperaturas, analisando as diferentes concentrações de glicogênio e (ii) monitorar as concentrações de glicogênio nos diferentes grupos, quando mantidos por 28 dias em condições de laboratório. Com base nos resultados obtidos, a depuração não afetou nenhum grupo quando eles foram submetidos a oito horas de transporte. A variação da concentração de glicogênio entre os espécimes do campo quando depurados e não depurados, foi significativa apenas em relação à primeira semana em laboratório para o grupo não depurado e à segunda semana para o grupo depurado. Além disto, a temperatura testada não afetou os grupos submetidos ao transporte. As concentrações de glicogénio foram semelhantes as dos espécimes do campo a partir da terceira semana, o que sugere que os espécimes estão aclimatados às condições de laboratoriais neste período de tempo. Assim, os resultados indicam que o transporte ao ar e o tempo de aclimatação podem ser incorporados com sucesso aos estudos experimentais com L. fortunei. Finalmente, o conhecimento sobre a tolerância de L. fortunei ao estresse pode ajudar a entender a capacidade invasiva deste durante o processo de estabelecimento.

Abstract Successful animal rearing under laboratory conditions for commercial processes or laboratory experiments is a complex chain that includes several stressors (e.g., sampling and transport) and incurs, as a consequence, the reduction of natural animal conditions, economic losses and inconsistent and unreliable biological results. Since the invasion of the bivalve Limnoperna fortunei (Dunker, 1857) in South America, several studies have been performed to help control and manage this fouling pest in industrial plants that use raw water. Relatively little attention has been given to the laboratory rearing procedure of L. fortunei, its condition when exposed to a stressor or its acclimation into laboratory conditions. Considering this issue, the aims of this study are to (i) investigate L. fortunei physiological responses when submitted to the depuration process and subsequent air transport (without water/dry condition) at two temperatures, based on glycogen concentrations, and (ii) monitor the glycogen concentrations in different groups when maintained for 28 days under laboratory conditions. Based on the obtained results, depuration did not affect either of the groups when they were submitted to approximately eight hours of transport. The variation in glycogen concentration among the specimens that were obtained from the field under depurated and non-depurated conditions was significant only in the first week of laboratory growth for the non-depurated group and in the second week for the depurated group. In addition, the tested temperature did not affect either of the groups that were submitted to transport. The glycogen concentrations were similar to those of the specimens that were obtained from the field in third week, which suggests that the specimens acclimated to laboratory conditions during this period of time. Thus, the results indicate that the air transport and acclimation time can be successfully incorporated into experimental studies of L. fortunei. Finally, the tolerance of L. fortunei specimens to the stressor tested herein can help us understand the invasive capacity of this mussel during the establishment process.

Introducción: La tuberculosis continúa siendo un problema en salud pública con alta carga de la enfermedad. El efecto del estigma en el control de la TBC es desconocido porque se han realizado pocos estudios formales sobre el tema. Objetivo: Desarrollar un instrumento para medir el estigma hacia la TBC. Materiales y métodos: Estudio de evaluación de tecnología diagnóstica, con diseño del instrumento bajo las recomendaciones de Wolfe y Smith, basados en el modelo de análisis Rasch. Resultados: Se diseñó un instrumento con 35 ítems, que presentaron una adecuada comprensión por parte de las personas evaluadas. Conclusiones: El instrumento diseñado contribuirá en la medición de este constructo y en la comprensión de sus efectos en el control de la TBC

Introduction: Tuberculosis remains a public health problem with high burden of disease. The effect of stigma in TB control is unknown because there have been too few formal studies on the subject. Objective: To design an instrument to measure the tuberculosis stigma. Methodology: Study of diagnostic technologies evaluation, aiming at the elaboration of an instrument based on the Rasch- Analysis in accordance with the recommendations of Wolfe and Smith. Results: An instrument has been designed featuring 35 items that had been adequately understood by the persons assessed. Conclusions: The tool designed will contribute to measuring stigma and to understanding its impact on TB control

<p>In this study a sandwich-type octa-substituted Erbium (III) bis-phthalocyanine compound of increased solubility was synthetized from a metal free phthalocyanine with the same substitution pattern using strictly dry reaction conditions. Then the pure product obtained from a chromatographic purification method was deposited as thin films by spin coating onto glass substrates to investigate its structural and optical properties. The UV-Vis spectrum shows the intense characteristic peaks of this kind of phthalocyanine compounds, particularly in the range from 560 to 630 nm. The chemical nature of the thin film material was corroborated through x-ray diffraction analysis and IR spectroscopy. Photoluminescence emission was observed for the films in the visible range.</p>

Introducción. Acompañando las tendencias mundiales en busca de la sustentabilidad, en los últimos años las instituciones universitarias han realizado esfuerzos en el desarrollo de estrategias para la gestión de los residuos peligrosos generados en su interior con la intención de controlar y minimizar la contaminación ambiental desde este espacio. Objetivos. Diseñar e implementar estrategias educativas para la adecuada disposición y segregación de residuos químicos que minimice los efectos nocivos al medio ambiente y cumpla con la normativa. Metodología. En este artículo se da cuenta de una investigación cualitativa aplicada a la segregación y disposición de los residuos químicos producidos en el Laboratorio de Bioquímica y Nutrición Animal del Politécnico Colombiano Jaime Isaza Cadavid, la cual se desarrolló en las 3 siguientes fases: i) diagnóstico de la problemática, ii) implementación seguimiento y evaluación de la metodología aplicada, iii) sensibilización y capacitación del personal del laboratorio y socialización ante la comunidad politécnica. Resultados. Los resultados han permitido caracterizar cualitativamente los residuos generados en las prácticas, etiquetar, almacenar y segregar cada uno de ellos, contando con la participación de la comunidad educativa que asiste al laboratorio, a través de procesos de educación en el aula y disposiciones legales sobre el tema. Conclusiones. El trabajo desarrollado ha contribuido a llevar a cabo la disposición y segregación adecuada de los residuos químicos producidos en el laboratorio por medio de la sensibilización y la educación ambiental, permitiendo el cumplimiento de la normativa establecida.

Introduction. Following the world trends concerning the search for sustainability, university institutions have assumed efforts in recent years to develop strategies to manage the dangerous solid waste they produce, aiming to control and minimize pollution within their spaces. Objectives. To design and implement educational strategies for the adequate disposal and segregation of chemical waste, thus minimizing harmful effects on the environment and meeting the regulations. Methodology. This paper registers a qualitative research work applied to the segregation and the disposal of chemical solid waste from the Biochemistry and Animal Feeding Laboratory at Politécnico Colombiano Jaime Isaza Cadavid, developed with three phases: i) diagnose of the problem; ii) implementation, monitoring and evaluation of the methodology applied and iii), sensitization and training of the staff of the laboratory and socialization to the academic community. Results. The results have allowed a qualitative classification of the waste generated in the practices, labeling, storing and segregating each waste with the participation of the educational community that uses the laboratory, with educational processes in the classroom and following the legal conditions on the subject. Conclusions. The work developed has contributed to execute the disposal and the segregation of the chemical waste produced in the laboratory by means of the sensitization and the environmental education, thus allowing the fulfillment of the legal requisites.

Introdução. Acompanhando as tendências mundiais em procura da sustentabilidade, nos últimos anos as instituições universitárias realizaram esforços no desenvolvimento de estratégias para a gestão dos resíduos perigosos gerados em seu interior com a intenção de controlar e minimizar a contaminação ambiental desde este espaço. Objetivos. Desenhar e implementar estratégias educativas para a adequada disposição e segregação de resíduos químicos que minimize os efeitos nocivos ao meio ambiente e cumpra com o regulamento. Metodologia. Neste artigo se dá conta de urna investigação qualitativa aplicada á segregação e disposição dos resíduos químicos produzidos no Laboratório de Bioquímica e Nutrição Animal do Politécnico Colombiano Jaime Isaza Cadavid, a qual se desenvolveu nas 3 seguintes fases: i) diagnóstico da problemática, ii) implementação seguimento e avaliação da metodologia aplicada, iii) sensibilização e capacitação do pessoal do laboratório e socialização ante a comunidade politécnica. Resultados. Os resultados permitiram caracterizar qualitativamente os resíduos gerados nas práticas, etiquetar, armazenar e segregar cada um deles, contando com a participação da comunidade educativa que assiste ao laboratório, através de processos de educação no sala de aula e disposições legais sobre o tema. Conclusões. O trabalho desenvolvido contribuiu a levar a cabo a disposição e segregação adequada dos resíduos químicos produzidos no laboratório por meio da sensibilização e a educação ambiental, permitindo o cumprimento do regulamento estabelecido.

The results of a study on nematode fauna occurring in wild iguanas (Iguana iguana) from Brazilian Northeast (Alagoas and Maranhão) and Central-west (Goiás and Mato Grosso) areas were presented. Six adult iguanas, three males and three females, were necropsied and the digestive system removed to examination. All the iguana specimens were heavily parasitized. The helminths diagnosed were: Ozolaimus cirratus in the cecum and colon of five iguanas; Ozolaimus megatyphlon in cecum, colon and rectum of three iguanas; and Alaeuris vogelsangi in the small intestine, cecum, colon and rectum of five animals. Two larvae of Ozolaimus sp. were recovered from the pyloric region of the stomach of one iguana. The three diagnosed species of nematodes were reported for the first time in the Brazilian Central-West region.