Autolesiones no suicidas en estudiantes de medicina: frecuencia y factores asociados

Introducción: la salud mental de los estudiantes de medicina ha sido ampliamente investigada, demostrando que forman parte de un grupo vulnerable al desarrollo de trastornos mentales. Objetivo: el objetivo de esta investigación fue determinar la frecuencia de NSSI y sus factores asociados en estudiantes de medicina del Paraguay. Metodología: este fue un estudio descriptivo y transversal. Se lanzó una encuesta online para evaluar depresión, ansiedad y autolesiones, se utilizaron las escalas PHQ-2, GAD-7 y SHQ, respectivamente. Resultados: recibimos respuestas de 330 estudiantes de medicina. De los participantes, el 71,2 % eran mujeres. Se identificó que el 46,4 % de los participantes padecía depresión (PHQ-2 ≥ 3) y el 37,3 % ansiedad (GAD-7 ≥10). La frecuencia de NSSI fue del 27 % (n = 89). Los principales factores asociados a NSSI fueron un diagnóstico previo de un trastorno mental (que aumentó la probabilidad de NSSI en 3,76 veces) y/o una historia de abuso físico o sexual (con un aumento de 3,75 veces). Conclusión: esta investigación encontró la presencia de NSSI en casi 3 de cada 10 de los estudiantes de medicina encuestados. Los principales factores asociados con la conducta autolesiva fueron un diagnóstico previo de un trastorno mental y/o antecedentes de abuso físico o sexual.

Introduction: the mental health of medical students has been extensively researched, showing that they are part of a group vulnerable to the development of mental disorders. Aim: the aim of this research was to determine the frequency of NSSI and its associated factors in medical students in Paraguay. Methodology: this was a descriptive and cross-sectional study. An online survey was launched to assess depression, anxiety, and self-harm, the PHQ-2, the GAD-7 and SHQ scales were used, respectively. Results: we received responses from 330 medical students. Of the participants, 71.2 % were female. 46.4% of the participants were identified as having depression (PHQ-2 ≥ 3) and 37.3 % as having anxiety (GAD-7 ≥10). The frequency of NSSI was 27 % (n = 89). The main factors associated with NSSI were a previous diagnosis of a mental disorder (which increased the likelihood of NSSI by 3.76 times) and/ or a history of physical or sexual abuse (with a 3.75-fold increase). Conclusion: this research found the presence of NSSI in almost 3 out of 10 of the medical students surveyed. The main factors associated with self-injurious behavior were a previous diagnosis of a mental disorder and/or a history of physical or sexual abuse.

Autolesiones no suicidas en estudiantes de medicina: frecuencia y factores asociados / Non-suicidal Self-injury in Medical Students: Frequency and Associated Factors

Introducción: la salud mental de los estudiantes de medicina ha sido ampliamente investigada, demostrando que forman parte de un grupo vulnerable al desarrollo de trastornos mentales. Objetivo: el objetivo de esta investigación fue determinar la frecuencia de NSSI y sus factores asociados en estudiantes de medicina del Paraguay. Metodología: este fue un estudio descriptivo y transversal. Se lanzó una encuesta online para evaluar depresión, ansiedad y autolesiones, se utilizaron las escalas PHQ-2, GAD-7 y SHQ, respectivamente. Resultados: recibimos respuestas de 330 estudiantes de medicina. De los participantes, el 71,2 % eran mujeres. Se identificó que el 46,4 % de los participantes padecía depresión (PHQ-2 ≥ 3) y el 37,3 % ansiedad (GAD-7 ≥10). La frecuencia de NSSI fue del 27 % (n = 89). Los principales factores asociados a NSSI fueron un diagnóstico previo de un trastorno mental (que aumentó la probabilidad de NSSI en 3,76 veces) y/o una historia de abuso físico o sexual (con un aumento de 3,75 veces). Conclusión: esta investigación encontró la presencia de NSSI en casi 3 de cada 10 de los estudiantes de medicina encuestados. Los principales factores asociados con la conducta autolesiva fueron un diagnóstico previo de un trastorno mental y/o antecedentes de abuso físico o sexual.

Introduction: the mental health of medical students has been extensively researched, showing that they are part of a group vulnerable to the development of mental disorders. Aim: the aim of this research was to determine the frequency of NSSI and its associated factors in medical students in Paraguay. Methodology: this was a descriptive and cross-sectional study. An online survey was launched to assess depression, anxiety, and self-harm, the PHQ-2, the GAD-7 and SHQ scales were used, respectively. Results: we received responses from 330 medical students. Of the participants, 71.2 % were female. 46.4% of the participants were identified as having depression (PHQ-2 ≥ 3) and 37.3 % as having anxiety (GAD-7 ≥10). The frequency of NSSI was 27 % (n = 89). The main factors associated with NSSI were a previous diagnosis of a mental disorder (which increased the likelihood of NSSI by 3.76 times) and/ or a history of physical or sexual abuse (with a 3.75-fold increase). Conclusion: this research found the presence of NSSI in almost 3 out of 10 of the medical students surveyed. The main factors associated with self-injurious behavior were a previous diagnosis of a mental disorder and/or a history of physical or sexual abuse.

Kinetics and Thermodynamics of Adsorption for Aromatic Hydrocarbon Model Systems via a Coagulation Process with a Ferric Sulfate-Lime Softening System.

The adsorption mechanisms for model hydrocarbons, 4-nitrophenol (PNP), and naphthalene were studied in a coagulation-based process using a ferric sulfate-lime softening system. Kinetic and thermodynamic adsorption parameters for this system were obtained under variable ionic strength and temperature. An in situ method was used to investigate kinetic adsorption profiles for PNP and naphthalene, where a pseudo-first order kinetic model adequately described the process. Thermodynamic parameters for the coagulation of PNP and naphthalene reveal an endothermic and spontaneous process. River water was compared against lab water samples at optimized conditions, where the results reveal that ions in the river water decrease the removal efficiency (RE; %) for PNP (RE = 28 to 20.3%) and naphthalene (RE = 89.0 to 80.2%). An aluminum sulfate (alum) coagulant was compared against the ferric system. The removal of PNP with alum decreased from RE = 20.5% in lab water and to RE = 16.8% in river water. Naphthalene removal decreased from RE = 89.0% with ferric sulfate to RE = 83.2% with alum in lab water and from RE = 80.2% for the ferric system to RE = 75.1% for alum in river water. Optical microscopy and dynamic light scattering of isolated flocs corroborated the role of ions in river water, according to variable RE and floc size distribution.

Utilization of Bioflocculants from Flaxseed Gum and Fenugreek Gum for the Removal of Arsenicals from Water.

Mucilage-based flocculants are an alternative to synthetic flocculants and their use in sustainable water treatment relates to their non-toxic and biodegradable nature. Mucilage extracted from flaxseed (FSG) and fenugreek seed (FGG) was evaluated as natural flocculants in a coagulation-flocculation (CF) process for arsenic removal, and were compared against a commercial xanthan gum (XG). Mucilage materials were characterized by spectroscopy (FT-IR, 13C NMR), point-of-zero charge (pHpzc) and thermogravimetric analysis (TGA). Box-Behnken design (BBD) with response surface methodology (RSM) was used to determine optimal conditions for arsenic removal for the CF process for three independent variables: coagulant dosage, flocculant dosage and settling time. Two anionic systems were tested: S1, roxarsone (organic arsenate 50 mg L-1) at pH 7 and S2 inorganic arsenate (inorganic arsenate 50 mg L-1) at pH 7.5. Variable arsenic removal (RE, %) was achieved: 92.0 (S1-FSG), 92.3 (S1-FGG), 92.8 (S1-XG), 77.0 (S2-FSG), 69.6 (S2-FGG) and 70.6 (S2-XG) based on the BBD optimization. An in situ kinetic method was used to investigate arsenic removal, where the pseudo-first-order model accounts for the kinetic process. The FSG and FGG materials offer a sustainable alternative for the controlled removal of arsenic in water using a facile CF treatment process with good efficiency, as compared with a commercial xanthan gum.

Adenocarcinoma de laringe con metástasis en el pene / Laryngeal adenocarcinoma with metastasis in penis

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Estudio fármaco-toxicológico del extracto fluido de uva caleta al 50 por ciento / Pharmacotoxicological study of the fluid extract from coccoloba uvífera 50 por ciento

Se realizó un estudio farmacológico del extracto fluido de uva caleta al 50 por ciento donde se evaluó el efecto acelerador de la cicatrización en heridas abiertas en la piel de ratas wistar y se comprobó finalmente que el grupo de tratamiento con el extracto tiene los índices más altos de cicatrización. Luego se determinó la inocuidad del extracto en animales de experimentación y se realizó un estudio toxicológico por los métodos establecidos según la OECD y la ISO. Los ensayos de toxicidad aguda oral y dérmica demostraron que al aplicar una dosis de 2 000 mg/kg de peso corporal no se observaron signos tóxicos, ni muertes por lo que se considera sin clasificar siendo potencialmente inocuo para el hombre. También se estudió el potencial irritante sobre la piel y las mucosas oral y ocular, donde se obtuvo que en ningún caso se provocan daños o alteraciones, por lo que se clasifica en todos los casos como no irritante(AU)