The worldwide emergence of viral diseases such as Zika, Dengue, Chikungunya, West Nile and Yellow Fever urge the search for solutions to eliminate their common vector, the Aedes aegypti mosquito. This paper describes the quantitative structure-activity relationship (QSAR) and docking studies of a series of nine 3-(3-aryl-1,2,4-oxadiazol-5-yl)propionic acids (AOPA), 1-9, previously published by our group. Additionally, three new 1,2,4-oxadiazoles, 10-12, have also been synthesized, characterized and studied. The QSAR and docking studies of all compounds, 1-12, clearly indicate that larger hydrophobic substituents such as biphenyl groups attached on position 3 in 1,2,4-oxadiazoles improve the larvicidal activity. It is worthwhile to mention that nanocapsulation of compounds 10-12 were necessary to help their dissolution in water and these three new 1,2,4-oxadiazoles also exhibited approximately equal or higher larvicidal activities compared to the former prototypes at stage L4.

Abstract Background: Phonotimpus pennimani (Araneae, Phrurolithidae) is a small-sized (3-5 mm) spider endemic to the Tacaná volcano in Chiapas, Mexico, where it is found in soil litter of cloud forests and coffee plantations. Its venom composition has so far not been investigated, partly because it is not a species of medical significance. However, it does have an important impact on the arthropod populations of its natural habitat. Methods: Specimens were collected in Southeastern Mexico (Chiapas) and identified taxonomically by morphological characteristics. A partial sequence from the mitochondrial gene coxI was amplified. Sequencing on the Illumina platform of a transcriptome library constructed from 12 adult specimens revealed 25 toxin or toxin-like genes. Transcripts were validated (RT-qPCR) by assessing the differential expression of the toxin-like PpenTox1 transcript and normalising with housekeeping genes. Results: Analysis of the coxI-gene revealed a similarity to other species of the family Phrurolithidae. Transcriptome analysis also revealed similarity with venom components of species from the families Ctenidae, Lycosidae, and Sicariidae. Expression of the toxin-like PpenTox1 gene was different for each developmental stage (juvenile or adult) and also for both sexes (female or male). Additionally, a partial sequence was obtained for the toxin-like PpenTox1 from DNA. Conclusion: Data from the amplification of the mitochondrial coxI gene confirmed that P. pennimani belongs to the family Phrurolithidae. New genes and transcripts coding for venom components were identified.

Resumen Introducción. El pueblo hitnü vive en condiciones sanitarias precarias, con inseguridad alimentaria y víctima de la violencia sociopolítica en Arauca (Colombia). Además, se sospecha que pueden estar afectados por la exposición a los hidrocarburos del petróleo. Objetivo. Identificar los eventos de salud del perfil de morbilidad y mortalidad de los indígenas hitnü que podrían asociarse con la exposición a petróleo crudo. Materiales y métodos. Se realizó un estudio transversal con indígenas hitnü, durante febrero y marzo de 2021, época de sequía. Se aplicó un cuestionario de hogares y uno individual para recolectar datos del ambiente peridomiciliario, ocupaciones y otras actividades, así como datos sociodemográficos, signos, síntomas y hallazgos de un examen médico. La potencial asociación con los hidrocarburos se exploró considerando tres grupos, según su localización: cabecera de Arauca, resguardo Aspejená (no expuestos) y resguardos de San José del Lipa y La Vorágine (expuestos por su cercanía al río Ele y afluentes). Con listados libres, se exploraron las causas de muerte. El estudio incorporó un riguroso manejo intercultural en todos sus componentes. Resultados. Participaron 576 indígenas de 16 asentamientos. El agua consumida pudo servir como medio de exposición a los hidrocarburos. Los problemas de salud fueron muy variados e incluían enfermedades infecciosas y crónicas, malnutrición y trauma. Las masas en el cuello se asociaron con residir en los resguardos ancestrales (RP=3,86; IC95% 1,77-8,39), territorios potencialmente expuestos al petróleo. Las causas de muerte más relevantes fueron el homicidio, los tumores y la tuberculosis. Conclusión: Por su posible asociación con los hidrocarburos, es prioritario el estudio intercultural de linfoadenopatías entre indígenas potencialmente expuestos al petróleo.

Abstract Introduction: The Hitnü indigenous people live in precarious sanitary conditions, with food insecurity and being victims of sociopolitical violence in Arauca, Colombia. In addition, it is possible that they may be affected by exposure to hydrocarbons found in oil. Objective: To identify the health outcomes of morbidity and mortality profiles of the Hitnü people that could be associated with the exposure to crude oil. Materials and methods: A cross-sectional study was carried out with Hitnü indigenous people, during February and March, 2021, time of drought. A household questionnaire was applied, and one individual to collect data from the environment around the house, occupations and other activities, as well as data from sociodemographic, signs, symptoms, and findings of a medical examination. The potential association with hydrocarbons was explored considering three groups: inhabitants in Arauca city, Aspejaná reserve (not exposed), and San José del Lipa and La Vorágine reserves (exposed by the Ele river and tributaries). With free listings, causes of death were explored. The study incorporated a rigorous intercultural management in all its components. Results: A total of 576 indigenous people from 16 settlements participated. The water consumed could serve as means of exposure to hydrocarbons. Health problems were very varied, including infectious and chronic diseases, malnutrition, and trauma. The masses on the neck were associated with residing in the ancestral reserves (PR = 3.86; CI95% 1.77-8.39), territories with potential exposure to crude-oil. The most relevant causes of death were homicide, tumors, and tuberculosis. Conclusion: For its possible association with exposure to hydrocarbons, it is a priority to start the intercultural study of lymphadenopathies in indigenous communities potentially exposed to crude oil.

Resumen Introducción: Las bioprótesis de válvulas cardiacas son el estándar de oro para el reemplazo quirúrgico de la válvula aórtica en pacientes seleccionados. Objetivo: Evaluar la seguridad y eficacia de la válvula cardiaca bioprotésica del Instituto Nacional de Cardiología (INC) en humanos. Métodos: Estudio unicéntrico que incluyó 341 pacientes que se sometieron a reemplazo valvular quirúrgico único de válvula aórtica con válvula INC. Resultados: Se realizaron 318 implantes de novo (93 %) y 23 como segunda cirugía (7 %); las puntuaciones STS fueron de 1.4 y 1.8 % y el seguimiento de 42 y 46 meses, respectivamente. No existieron diferencias en las complicaciones ni en la tasa de implantación de marcapasos. Ambos grupos mantuvieron una FEVI normal. Se observó mejoría global en la clase funcional con empeoramiento solo en dos pacientes del grupo de novo. La disfunción de la prótesis INC que ameritó reintervención quirúrgica se observó en ocho pacientes (4.65 %) del grupo de novo versus un paciente (7.69 %) con segunda cirugía. Conclusiones: La válvula cardiaca INC es eficaz y segura, se asocia a baja tasa de complicaciones y mejoría de la clase funcional durante el seguimiento a largo plazo. Se necesitan estudios prospectivos comparativos de esta válvula.

Abstract Introduction: Heart valve bioprostheses are the gold standard for aortic valve surgical replacement in selected patients. Objective: To evaluate the safety and efficacy of the of the National Institute of Cardiology (INC) bioprosthetic heart alve of the National Institute of Cardiology (INC) bioprosthetic heart valve in humans. Methods: Single-center study that ncluded 341 patients who underwent single surgical aortic valve replacement with INC heart valve. Results: 318 implants were performed de novo (93%) and 23 as redo surgery (7%); STS scores were 1.4 and 1.8%, and follow-up was for 42 and 46 months, respectively. There were no differences in clinical complications or pacemaker implantation rate. Both groups maintained a normal LVEF. Overall improvement in functional class was observed, with worsening only in two patients of the de novo group. INC prosthesis dysfunction requiring surgical reintervention was observed in eight patients (4.65%) of the de novo group vs. one patient in the redo group. Conclusions: The INC heart valve is efficacious and safe, and is associated with a The INC heart valve is efficacious and safe, and is associated with a low rate of complications and functional class improvement during long-term follow-up. Prospective, comparative studies of this valve are required.

SUMMARY: The incorporation of gamification strategies in teaching has been described as a tool to increase the motivation and engagement of students with the subject. Under this premise, an educational innovation experience has been developed using the Kahoot! platform in the first and last laboratory practice of the Cell Biology course of the Biology degree. The participants were 135 students divided into 12 laboratory groups, which were divided into experimental and control groups. All groups solved a questionnaire on paper about the concepts explained in class, at the end of both practices (post-test), but only the experimental groups solved a questionnaire before the class (pre-test). Before the first practice, students in the experimental groups answered the pre-test using Kahoot! However, for the last practice, some groups solved it by playing Kahoot! and others with pen and paper. The results showed that those students who were selected to play Kahoot! obtained a higher number of correct answers in the test performed after the practical session (post-test) than those who did not solve any pre- test or who did it in a classical way. Therefore, our results suggest that implementing gamification in teaching considerably increases student motivation, probably due to physiological changes experienced by the brain during the game and the creation of a positive climate, which facilitates the learning process.

RESUMEN: La incorporación de estrategias de gamificación en la docencia se ha descrito como una herramienta para aumentar la motivación y el compromiso de los alumnos con la materia. Bajo esta premisa, se ha desarrollado una experiencia de innovación educativa mediante la plataforma Kahoot! en la primera y última práctica de laboratorio de la asignatura de Biología Celular del Grado en Biología. Los participantes fueron 135 alumnos repartidos en 12 grupos de laboratorio, que se dividieron entre experimentales y controles. Todos los grupos resolvieron un cuestionario en papel acerca de los conceptos explicados en clase, al finalizar ambas prácticas (post-test), pero sólo aquellos grupos experimentales resolvían un cuestionario antes de la clase (pre-test). Antes de la primera práctica, los alumnos de los grupos experimentales respondieron al pre-test mediante el Kahoot! Sin embargo, para la última práctica algunos grupos lo resolvieron jugando al Kahoot! y otros, con papel y bolígrafo. Los resultados mostraron que aquellos alumnos que fueron seleccionados para jugar a Kahoot!, obtuvieron un mayor número de aciertos en el test realizado tras la sesión práctica (post-test) con respecto a aquellos que no resolvieron ningún pre-test o, que lo hicieron de un modo clásico. Por lo tanto, nuestros resultados sugieren que implementar la jugabilidad en la docencia incrementa considerablemente la motivación del alumnado debido, probablemente, a cambios fisiológicos experimentados por el cerebro durante el juego y a la creación de un clima positivo, que facilitan el proceso de aprendizaje.

SUMMARY: The rat jaw is one of the most interesting anatomical structures in dental science research, due to its similarity to the human jaw. The aim of this study was to morphometrically characterize the mandible of rats by CBCT. The cone beam examination of 20 healthy adult female rats was analyzed. Using the examination software, it was possible to isolate the right and left mandible from the other structures and adequately perform the morphometric measurements of interest. In the comparison of both sides, only two measures presented significant differences. The distance from the deepest point of the sigmoid notch to the deepest point of the notch at the lower margin of the mandible was greater on the left side than on the right. And the distance between the most superior point of the condyle to the mandibular base, in the perpendicular projection of the mandibular plane, was greater on the left side than on the right. According to the measurements obtained, we can determine that the rat jaw is an elongated structure, with larger dimensions in the anteroposterior direction compared to the vertical measurements. Knowledge of the anatomy of the rat mandible and its variations per side allows researchers to have adequate references for studies involving this structure, such as research that requires the application of anesthetic techniques, study of orofacial pain, pathophysiological study of the TMJ, study of bone growth, testing of dental biomaterials or in the study of pathophysiological processes related to den- tal or periodontal tissues. The rat mandible is a good animal model due to its reproducibility and low cost. The right and left mandible are similar in their anteroposterior dimensions, but not the vertical ones.

RESUMEN: La mandíbula de rata es una de las estructuras anatómicas de mayor interés en la investigación en las ciencias odontológicas, esto debido a su similitud con la mandíbula humana. El objetivo de este estudio fue caracterizar morfometricamente la mandíbula de ratas mediante CBCT. Se analizó el examen cone beam de 20 ratas hembras, adultas sanas. Mediante el software del examen, fue posible aislar la mandíbula derecha e izquierda de las otras estructuras y realizar adecuadamente las medidas morfométricas de interés. En la comparación de ambos lados, sólo dos medidas presentaron diferencias significativas. La distancia entre el punto más profundo de la escotadura sigmoidea hasta el punto más profundo de la escotadura en el margen inferior de la mandíbula, fue mayor en el lado izquierdo que en el derecho. Y la distancia entre el punto más superior del cóndilo hasta la base mandibular, en la proyección perpendicular del plano mandibular fue mayor en el lado izquierdo que en el derecho. De acuerdo a las medidas obtenidas, podemos determinar que la mandíbula de la rata es una estructura alargada, con dimensiones mayores en sentido anteroposterior en comparación con las medidas verticales. El conocimiento de la anatomía de la mandíbula de rata y sus variaciones por lado permite a los investigado- res tener referencias adecuadas para los estudios que involucren esta estructura, como por ejemplo, investigaciones que requieran la aplicación de técnicas anestésicas, estudio del dolor orofacial, estudio patofisiológico de la ATM, estudio del crecimiento óseo, testeo de biomateriales dentales o en el estudio de procesos fisiopatológicos relacionados con los tejidos dentales o periodontales. La mandíbula de la rata es un buen modelo animal debido a su reproducibilidad y bajo costo. La mandíbula derecha e izquierda son similares en sus dimensiones anteroposteriores, pero no las verticales.

Resumen (analítico) Presentamos una iniciativa y proponemos una metodología transdisciplinaria para cultivar la memoria biocultural, basada en los procesos de participación y materialización en comunidades de práctica (educativas). Presentamos el proyecto «Escuchando a los abuelos», que buscó facilitar diálogos intergeneracionales en tres escuelas mapuche (~ 90 niños y niñas) en Wallmapu, Chile. «Escuchando a los abuelos» utilizó a las aves como protagonistas de narrativas locales sobre el territorio. Cocreamos un ciclo de cinco pasos para promover la participación y la materialización. Los niños y niñas desarrollaron un ejercicio de abstracción para dar significado a las narrativas que ellos mismos recopilaron para crear memes positivos sobre las aves. Estos memes fueron comunicados dentro y más allá de sus comunidades. Concluimos que la experiencia de los abuelos debe ser honrada para contrarrestar la actual extinción de la experiencia biocultural.

Abstract (analytical) This article presents an initiative and proposes a transdisciplinary methodology to cultivate biocultural memory based on the processes of participation and materialization in (educational) communities-of-practice. We implemented the project "Listening to elders" that sought to facilitate intergenerational dialogues in three mapuche schools (with approximately 90 children) in Wallmapu, Chile. Listening to elders used birds as the basis of constructing local narratives about the territory. We co-created a 5-Step cycle to promote participation and materialization. The children participated in an abstraction exercise to give meaning to the narratives they constructed themselves to create positive memes involving birds. These memes were communicated within and beyond their communities. The authors conclude that the experiences of elders must be honored in communities to counter the current dynamic involving the extinction of biocultural experience.

Resumo (analítico) Apresentamos uma iniciativa e propomos uma metodologia transdisciplinar para o cultivo da memória biocultural, baseada nos processos de participação e materialização, em comunidades de prática (educacionais). Apresentamos o projeto «Escutando os avós» que buscou facilitar o diálogo intergeracional em três escolas mapuche (~ 90 crianças) em Wallmapu, Chile. «Ouvir os avós» usou os pássaros como base para as narrativas locais sobre o território. Co-criamos um ciclo de cinco passos para promover a participação e materialização. As crianças desenvolveram um exercício de abstração para dar sentido às narrativas que elas próprias coletaram para criar memes positivos sobre pássaros. Esses memes foram comunicados dentro e fora de suas comunidades. Concluímos que a experiência dos avós deve ser honrada para conter a atual extinção da experiência biocultural.

Abstract Background Hydroxyethyl starches are colloids used in fluid therapy that may reduce volume infusion compared with crystalloids, but they can affect renal function in critical care patients. This study aims to assess renal effects of starches using renal biomarkers in the perioperative setting. Methods This prospective, controlled, randomized study compared Hydroxyethyl starch 6% (HES) with Ringer's lactate (RL) in hysterectomy. Each episode of mean arterial pressure (MAP) below 60 mmHg guided the fluid replacement protocol. The RL group received 300 mL bolus of RL solution while the HES group received 150 mL of HES solution. All patients received RL (2 mL.kg−1.h−1) intraoperatively to replace insensible losses. Blood and urine samples were collected at three time points (preoperatively, 24 hours, and 40 days postoperatively) to assess urinary NGAL and KIM-1, as primary outcome, and other markers of renal function. Results Seventy patients were randomized and 60 completed the study. The RL group received a higher crystalloid volume (1,277 ± 812.7 mL vs. 630.4 ± 310.2 mL; p= 0.0002) with a higher fluid balance (780 ± 720 mL vs. 430 ± 440 mL; p= 0.03) and fluid overload (11.7% ± 10.4% vs. 7.0% ± 6.3%; p= 0.04) compared to the HES group. NGAL and KIM-1 did not differ between groups at each time point, however both biomarkers increased 24 hours postoperatively and returned to preoperative levels after 40 days in both groups. Conclusion HES did not increase renal biomarkers following open hysterectomy compared to RL. Moreover, HES provided better hemodynamic parameters using less volume, and reduced postoperative fluid balance and fluid overload.

Abstract The therapeutic approach to metastatic melanoma has revolutionized the clinical course of this disease. Since 2011, different immunotherapeutic drugs have been approved. Nivolumab is a humanized immunoglobulin IgG4 monoclonal antibody that binds to the PD-1 receptor, blocking its interaction with his ligand PD-L1. The authors present a new case of photosensitivity induced by nivolumab. The photo exposed distribution of the eruption, the sun exposure prior to the beginning of the eruption, and the chronological relationship with the beginning of the treatment are data that have allowed us to confirm the suspected clinical diagnosis.

Summary Objective: The effects of an online prevention program on technological addictions and cognitive-affective dispositions in university students during the COVID-19 pandemic were evaluated. Methods: Forty-two students participated in the sample, of which 21 formed the experimental group (EG) and the other 21 students the control group (CG). Academic efficacy and academic engagement scales were used, as well as cell phone, internet and video game addiction tests. Results: The application of the program significantly reduced the internet addiction, cell phone and video games and at the same time significantly increased the positive assessment of academic engagement and academic efficacy; comparisons between the study groups (GE versus GC) according to the effect sizes (.30 < d >. 50) evidenced important practical differences in the internet addiction, cell phone and video games, for the three variables the GE showed lower averages than the GC; on the other hand the comparisons between GE and GC resulted with effect size differences between medium (d >.50) and large (d >.80) in academic efficacy and academic engagement respectively, in these two variables the GE showed higher averages. Conclusion: the prevention program has reduced technological addictions, as well as increased cognitive-affective dispositions in students.

Resumen Objetivo: Se evaluó los efectos de un programa de prevención en línea sobre las adicciones tecnológicas y disposiciones cognitiva-afectivas en universitarios durante la pandemia COVID-19. Método: Participaron en la muestra 42 estudiantes, de los cuales 21 conformaron el grupo experimental (GE) y los otros 21 estudiantes el control (GC). Se utilizaron las escalas de eficacia académica y engagement académico, así como los test de adicción al teléfono móvil, al internet y a los videojuegos. Resultados: La aplicación del programa redujo significativamente la adicción al internet, teléfono móvil y videojuegos y a la vez aumentó significativamente la valoración positiva del compromiso académico y la eficacia académica; las comparaciones entre los grupos de estudio (GE versus GC) de acuerdo con los tamaños de efecto (.30 < d >.50) evidenciaron diferencias prácticas importantes en cuanto al uso adictivo de internet, del teléfono móvil y los videojuegos, para las tres variables el GE mostró menores promedios que el GC; de otra parte las comparaciones entre GE y GC resultaron con diferencias de magnitudes de efecto entre mediano (d >.50) y grande (d >.80) en eficacia académica y compromiso académico respectivamente, en estas dos variables el GE mostró mayores promedios. Conclusión: el programa de prevención ha reducido las adicciones tecnológicas, así como incrementó las disposiciones cognitiva-afectivas en el estudiantado.

Resumen Objetivo: La asociación entre el factor de crecimiento transformante beta 1 (TGF-β1) y el glaucoma primario de ángulo abierto (GPAA) ha sido poco estudiada. El objetivo de este estudio fue buscar una asociación entre polimorfismos de nucleótido único (PNU) del gen del TGF-β1, -509C/T (rs1800469), -800G/A (rs1800468) y +915G/C (rs1800471) con el GPAA en una población mexicana. Método: Los PNU fueron genotipados usando la prueba de reacción en cadena de la polimerasa en tiempo real. Se utilizaron las pruebas de χ2 y análisis de regresión logística para buscar asociaciones entre las frecuencias alélicas, genotípicas, haplotípicas y en base a modelos (dominante, recesivo, codominante y sobredominante) y el GPAA. Resultados: Se incluyeron 237 sujetos, de los cuales 135 eran pacientes diagnosticados de GPAA y 102 controles. El alelo menor del PNU -800G/A aument significativamente el riesgo de GPAA (odds ratio [OR]: 3.38; intervalo de confianza [IC]: 1.46-8.23; p = 0.0051). Asimismo, en el análisis basado en modelos, el codominante (OR: 3,29; IC: 1,18-9,14; p = 0.018), el dominante (OR: 3.46; IC: 1.36-8.82; p = 0.0046) y el sobredominante (OR: 3.18; IC: 1.14-8.82; p = 0.016) mostraron un riesgo aumentado de GPAA con los genotipos GA, GA-AA y GA, respectivamente. Por otro lado, el PNU -509C/T otorgó protección en el modelo sobredominante (OR: 0.55; IC: 0.32-0.94; p = 0.028) con el genotipo CT. El análisis de haplotipos demostró que portar el alelo C del -509C/T, el alelo A del -800G/A y el alelo C del +915G/C aumentó el riesgo de padecer GPAA (OR: 2.74; IC: 1.20-6.25; p = 0.018). Conclusiones: El PNU asociado a la infraexpresión (-800G/A) del TGF-β1 se asoció a riesgo de GPAA, mientras que el PNU asociado a la sobreexpresión (-509C/T) se asoció a la protección. Estos resultados podrían sugerir nuevos planteamientos en el funcionamiento del microambiente de la malla trabecular.

Abstract Objective: The association between transforming growth factor beta 1 (TGF-β1) and primary open angle glaucoma (POAG) has been scarcely studied. The aim of this study was to explore the association between functional single nucleotide polymorphisms (PNU) in the TGF-β1 gene; -509C/T (rs1800469), -800G/A (rs1800468) and +915G/C (rs1800471) with POAG in a Mexican population. Method: The PNUs were genotyped by real time polymerase chain reaction. Allelic, genotypic, haplotypic and model-based (dominant, recessive, codominant and overdominant) associations of the PNUs with POAG were analyzed with Chi square test and logistic regression. Results: 237 non-related Mexican subjects were included; 135 were POAG patients and 102 were control subjects. The minor allele from the -800G/A PNU conferred a significant risk for POAG (oddsratio [OR]: 3.38; confidence interval [CI]: 1.46-8.23; p = 0.0051). Concurrently, in the model-based analysis, the codominant (OR: 3.29; CI: 1.18-9.14; p = 0.018), dominant (OR: 3.46; CI: 1.36-8.82; p = 0.0046) and overdominant models (OR: 3.18; CI: 1.14-8.82; p = 0.016) showed an increase in POAG risk with the GA, GA-AA and GA genotypes, respectively. Besides, the -509C/T PNU conferred protection in the overdominant model (OR: 0.55; CI: 0.32-0.94; p = 0.028) with the CT genotype. Haplotype analysis showed that carrying the C allele from the -509C/T, the A allele from the -800G/A, and the C allele from the +915G/C PNU, conferred an increased risk of POAG (OR: 2.74; CI: 1.20-6.25; p = 0.018). Conclusions: The PNU related to under expression (-800 G/A) of TGF-β1 was associated with risk of POAG while the PNU related to overexpression (-509C/T) with protection. These results may suggest new insights into the microenvironment of the trabecular meshwork.

Resumen La pandemia de COVID-19 determinó un importante cambio de los hábitos y comportamientos comu nitarios, entre ellos se observó un distanciamiento de la gente del sistema de salud y el abandono de hábitos saludables. El objetivo de este trabajo fue comprender las causas que dieron lugar a dichos cambios de com portamiento desde una perspectiva individual y evaluar el impacto en el control de los factores de riesgo car diovasculares. Realizamos una encuesta utilizando un cuestionario en línea y distribuida mediante la aplicación WhatsApp entre personas de la Argentina utilizando una combinación de muestreo por conveniencia y en “bola de nieve”. Recibimos 6176 respuestas, casi el 70% de los encuestados manifestaron temor de realizar una con sulta médica. Un tercio de los encuestados manifestó haber tenido necesidad de ir al médico en al menos una oportunidad desde el inicio de la pandemia, pero de éstos, el 48% evitó la visita. Las principales razones para evitarla: 1) la recomendación de quedarse en casa (40%); 2) dificultad para acceder al sistema de salud (35%); y 3) miedo al contagio (26%). La forma de consulta más común fue a través de medios no convencionales (correo electrónico, teléfono o WhatsApp). Uno de cada 5 encuestados tuvo dificultades para obtener una receta y el 5% dejó de tomar al menos un medicamento. En cuanto a los hábitos saludables, casi 2/3 de los encuestados afirmaron volverse más sedentarios, el 11% de los hipertensos aumentó su consumo de sal y el 15% aumentó sus valores de presión arterial, mientras que el 16% de los dislipidémicos mostró un mayor consumo de grasas.

Abstract The COVID-19 pandemic elicited important changes in community habits and behaviors, including a distancing of people from the healthcare system. The objective of this work was to understand the causes that gave rise to changes in behavior from an individual perspective in the Argentine Republic. We performed a cross-sectional, web-based survey using an online questionnaire. The survey was distributed via the WhatsApp application for smartphones among subjects across the Argentine territory using a combination of convenience and snowball sampling. We received 6176 responses. Almost 70% of respondents manifested fear of visiting a physician. One third of respondents manifested having a desire or need in at least one occasion of visiting a physician but, of these, 48% avoided it. The main reasons for avoiding visits were: 1) a recommenda tion of staying home (40%); 2) lack of access to the physician (35%); and 3) fear of contagion (26%). The most common form of consultation was through unconventional means (e-mail, telephone, or WhatsApp). One of 5 respondents had difficulties to obtain a medication prescription and 5% stopped the use of at least one medica tion. Regarding healthy habits, almost 2/3 of those surveyed stated that they became more sedentary; 11% of hypertensive patients increased their consumption of salt and 15% saw their blood pressure values increase, while 16% of dyslipidemic patients showed increased consumption of fats.

Abstract: The razor surgeonfish, Prionurus laticlavius, listed on the IUCN Red List of Threatened Species under the Least Concern category, plays an important ecological role as energy regulator in reef communities, but it is sought by the aquarium and aquaculture industry, and also is consumed by people. This study estimated the length-weight relationship (LWR) and relative condition factor (K rel ) in P. laticlavius. The equation for length-weight relationship was TW= 0.02 TL 3.01 for the Overall category, and the relative condition factor was 1.28. A total of 379 fish (3-45.6 cm total length) were collected in the southwestern coast of the Gulf of California using harpoon (for large fishes) and hand net (for small fishes), of which 181 were females (20.2-45.6 cm), 137 males (20.6-43.4 cm), and 61 juveniles (3-19.5 cm). Allometric coefficient b of LWR for the Overall category suggested isometric growth (b = 3.01), positive allometric growth for juveniles (b = 3.14), and negative allometric growth for adults (2.75). Results of K rel showed higher values for females during the warm season. The population showed a good nutritional condition, mainly in the warm season. This work is the first to estimate LWR and K rel for P. laticlavius, which will inform stock assessment and the management of this species in the Gulf of California.