Estudio de las propiedades farmacológicas y análisis fitoquímico de los extractos de <i>Gomphrena perennis</i> L. (Amaranthaceae)

Gomphrena perennis var. perennis L. (G. perennis) "flor de papel" o "siempre viva del campo" (Amaranthaceae) es una especie perenne distribuida en Sudamérica, principalmente Paraguay, Brasil, Argentina y Uruguay, usada en medicinal tradicional con purificadora estomacal, emoliente, diurética y tranquilizante para el tratamiento de afecciones del corazón. Su presencia se vio incrementada en la última década debido a que se comporta como una maleza tolerante al herbicida Glifosato (Round-Up®), de amplia utilización en el sistema productivo de siembra directa. Fitoquímicamente se ha reportado la presencia de 20-hidroxiecdisona, protoalcaloides betaína y colina. Farmacológicamente se ha estudiado sus propiedades anticancerígenas, actividad citotóxica y antimicrobiana, así como un efecto inhibitorio moderado del extracto metanólico y su fracción butánolica sobre la actividad de la 5-lipoxigenasa. El objetivo del presente trabajo de tesis intenta validar los efectos etnofarmacológicos de la tintura de G. perennis (GphT) y estudiar sus posibles propiedades farmacológicas, así como, contribuir al conocimiento fitoquímico de la especie. Para ello se realizó la extracción de la parte aérea de G. perennis con etanol 70º por maceración en frío, con solventes de polaridad creciente y por decocción al 10%. En el estudio fitoquímico detectamos la presencia de flavonoles y saponinas no citados en bibliografía para esta especie y se confirmó la presencia de alcaloides y núcleo esteroide. Por otra parte, no se detectaron taninos, cumarinas ni aceites esenciales. El estudio farmacológico demostró que los extractos ensayados presentaron actividad antioxidante y antiespasmódica, en este último caso solo en la GphT. La administración oral de GphT protegió al corazón frente a la injuria por isquemia-reperfusión (I/R) evitando el efecto deletéreo de la perfusión directa de la misma en un modelo de I/R por atontamiento sin infarto. Además, GphT mostró actividad hipotensora dependiente de la producción de óxido nítrico y un leve efecto ansiogénico pero no mostró actividad diurética, mientras que para la decocción no mostró efectos en la conducta de los ratones tratados.Facultad de Ciencias Exacta

Desarrollo de una técnica bioquímica para la degradación del espumado de poliuretano presente en colchones comercializados en Bogotá

In this research we integrated two techniques which were used individually to polyurethane's solid waste treatment (those did not specifically use for manufacturing polyurethane mattress). One of them has a biological nature and it is based in the action's principles of Aspergillus niger species, according to Pontifical Bolivarian University of Antioquia researchers. And other technique has chemical nature. It was proposed by Academy of Sciences of Bulgaria, in which the triethyl phosphate (FT) was used like chemical to degradation polyurethane foaming.Joining techniques allowed developing a new biochemical technique where degradation was achieved (small scale) about two polyurethane foam samples, then it was used in mattresses' production, thus for this purpose the combination and a slight variation in each one of the individual procedures which included the use of chemical and biological agents above (Aspergillus niger and triethyl phosphate).Para esta investigación, se integraron dos técnicas implementadas individualmente para el tratamiento de residuos sólidos de poliuretano (no específicamente del poliuretano utilizado para  fabricación de colchones). Una de las técnicas utilizadas es de naturaleza biológica y está basada en los principios de acción de la especie Asperguillus Níger, conforme lo reportan investigadores de la Pontificia Universidad Bolivariana de Antioquia [1]. La otra técnica es de naturaleza química y fue propuesta por la Academia de Ciencias de Bulgaria, en la cual se utilizó el trietilo fosfato (TEP) como agente químico que propicia la degradación del espumado de poliuretano [2].La unión de las técnicas, permitió desarrollar una técnica bioquímica nueva, con la cual se alcanzó la degradación (a pequeña escala) de dos muestras de espumado de poliuretano luego de ser utilizado en la producción de colchones; recurriendo para tal fin, a la combinación y a una leve variación, en  cada uno de los procedimientos individuales, lo cual incluyó el uso de los agentes químicos y biológicos antes mencionados (Asperguillus Níger y Trietilo Fosfato).

Intestinal, urinary and uterine antispasmodic effects of isoespintanol, metabolite from <i>Oxandra xylopioides</i> leaves

Background: Isoespintanol is a monoterpene isolated from the leaves of Oxandra xylopioides Diels. (Annonaceae) with antioxidant and antiinflammatory effects. It was of interest to know whether it has antispasmodic effects such as other known drugs, phloroglucinol and trimethoxybenzene, used in therapeutics for treating biliary, urinary and uterine spasms. Purpose: To assess whether isoespintanol possesses antispasmodic effects on intestine, uterus and bladder. Study design: A preclinical study was performed in which isoespintanol, phloroglucinol and trimethoxybenzene were evaluated with concentration–contractile response curves (CRC) of carbachol in isolated rat intestine and bladder, and with CRC of serotonin (5-HT) in rat uterus. Moreover, it was assessed whether isoespintanol interferes with Ca2+ influx by making CRC of Ca2+ in high-K+ medium in intestine and bladder. Results: Isoespintanol non-competitively inhibited the CRC of carbachol with affinity constant (pK) of 4.78 ± 0.09 in intestine and 4.60 ± 0.09 in bladder. Phloroglucinol and trimethoxybenzene were also non-competitive antagonists, but isoespintanol was 8 times more potent than trimethoxybenzene and similarly potent than phloroglucinol in intestine. In bladder, isoespintanol resulted 8 times more potent than trimethoxybenzene. The maximal inhibition of contraction followed the order of isoespintanol > trimethoxybenzene > phloroglucinol in intestine, and isoespintanol > trimethoxybenzene in bladder. Moreover, isoespintanol also completely and non-competitively inhibited the CRC of Ca+2, with a pK of 5.1 ± 0.1 in intestine, and 4.32 ± 0.07 in bladder. In uterus isoespintanol reduced, completely and non-competitively, the contraction produced by 5-HT with pK of 5.05 ± 0.07. Conclusion: Results demonstrate that isoespintanol is a very good intestinal, urinary and uterine antispasmodic, with higher potency than the other drugs used in therapeutics. The mechanism of action of isoespintanol is the interference with Ca+2 influx, at a difference of trimethoxybenzene and phloroglucinol.Departamento de Ciencias Biológica

Intestinal, urinary and uterine antispasmodic effects of isoespintanol, metabolite from <i>Oxandra xylopioides</i> leaves

Background: Isoespintanol is a monoterpene isolated from the leaves of Oxandra xylopioides Diels. (Annonaceae) with antioxidant and antiinflammatory effects. It was of interest to know whether it has antispasmodic effects such as other known drugs, phloroglucinol and trimethoxybenzene, used in therapeutics for treating biliary, urinary and uterine spasms. Purpose: To assess whether isoespintanol possesses antispasmodic effects on intestine, uterus and bladder. Study design: A preclinical study was performed in which isoespintanol, phloroglucinol and trimethoxybenzene were evaluated with concentration–contractile response curves (CRC) of carbachol in isolated rat intestine and bladder, and with CRC of serotonin (5-HT) in rat uterus. Moreover, it was assessed whether isoespintanol interferes with Ca2+ influx by making CRC of Ca2+ in high-K+ medium in intestine and bladder. Results: Isoespintanol non-competitively inhibited the CRC of carbachol with affinity constant (pK) of 4.78 ± 0.09 in intestine and 4.60 ± 0.09 in bladder. Phloroglucinol and trimethoxybenzene were also non-competitive antagonists, but isoespintanol was 8 times more potent than trimethoxybenzene and similarly potent than phloroglucinol in intestine. In bladder, isoespintanol resulted 8 times more potent than trimethoxybenzene. The maximal inhibition of contraction followed the order of isoespintanol > trimethoxybenzene > phloroglucinol in intestine, and isoespintanol > trimethoxybenzene in bladder. Moreover, isoespintanol also completely and non-competitively inhibited the CRC of Ca+2, with a pK of 5.1 ± 0.1 in intestine, and 4.32 ± 0.07 in bladder. In uterus isoespintanol reduced, completely and non-competitively, the contraction produced by 5-HT with pK of 5.05 ± 0.07. Conclusion: Results demonstrate that isoespintanol is a very good intestinal, urinary and uterine antispasmodic, with higher potency than the other drugs used in therapeutics. The mechanism of action of isoespintanol is the interference with Ca+2 influx, at a difference of trimethoxybenzene and phloroglucinol.Departamento de Ciencias Biológica

Intestinal, urinary and uterine antispasmodic effects of isoespintanol, metabolite from <i>Oxandra xylopioides</i> leaves

Background: Isoespintanol is a monoterpene isolated from the leaves of Oxandra xylopioides Diels. (Annonaceae) with antioxidant and antiinflammatory effects. It was of interest to know whether it has antispasmodic effects such as other known drugs, phloroglucinol and trimethoxybenzene, used in therapeutics for treating biliary, urinary and uterine spasms. Purpose: To assess whether isoespintanol possesses antispasmodic effects on intestine, uterus and bladder. Study design: A preclinical study was performed in which isoespintanol, phloroglucinol and trimethoxybenzene were evaluated with concentration–contractile response curves (CRC) of carbachol in isolated rat intestine and bladder, and with CRC of serotonin (5-HT) in rat uterus. Moreover, it was assessed whether isoespintanol interferes with Ca2+ influx by making CRC of Ca2+ in high-K+ medium in intestine and bladder. Results: Isoespintanol non-competitively inhibited the CRC of carbachol with affinity constant (pK) of 4.78 ± 0.09 in intestine and 4.60 ± 0.09 in bladder. Phloroglucinol and trimethoxybenzene were also non-competitive antagonists, but isoespintanol was 8 times more potent than trimethoxybenzene and similarly potent than phloroglucinol in intestine. In bladder, isoespintanol resulted 8 times more potent than trimethoxybenzene. The maximal inhibition of contraction followed the order of isoespintanol > trimethoxybenzene > phloroglucinol in intestine, and isoespintanol > trimethoxybenzene in bladder. Moreover, isoespintanol also completely and non-competitively inhibited the CRC of Ca+2, with a pK of 5.1 ± 0.1 in intestine, and 4.32 ± 0.07 in bladder. In uterus isoespintanol reduced, completely and non-competitively, the contraction produced by 5-HT with pK of 5.05 ± 0.07. Conclusion: Results demonstrate that isoespintanol is a very good intestinal, urinary and uterine antispasmodic, with higher potency than the other drugs used in therapeutics. The mechanism of action of isoespintanol is the interference with Ca+2 influx, at a difference of trimethoxybenzene and phloroglucinol.Departamento de Ciencias Biológica

Antispasmodic, cardioprotective and blood-pressure lowering properties of Gomphrena perennis L. and its mechanisms of action

Background: Gomphrena perennis L. is a native plant of South America whose pharmacological properties have not been studied yet. Aim: To evaluate the cardiovascular and intestinal pharmacological effects of Gomphrena perennis L. leaves tincture (GphT) and the mechanisms involved. Experimental procedure: The chromatographic profile of GphT was done. Its ex vivo effects were evaluated by contractile concentration-response curves (CRCs) obtained from the agonist carbachol or calcium found in isolated rat small intestine, as well as in the relaxant CRCs. Cardiac effects were evaluated on isolated rat hearts exposed to ischemia/reperfusion (I/R). Experiments in vivo were performed to evaluate the diuretic activity in conscious rats and the hypotensive effect in anaesthetised rats. Results: Fifteen flavonoids were identified in GphT by HPLC-UV, including diosmin. GphT induced a noncompetitive inhibition in both carbachol and calcium CRCs on rat small intestine. The first was not affected by indomethacin. Moreover, GphT, unlike diosmin, relaxed the contracture produced by a high-potassium solution in a dose-dependently way. Neither propranolol nor L-NAME changed it. GphT did not show diuretic activity but induced hypotension insensitive to L-NAME. While GphT perfusion of isolated hearts increased injury consequent to I/R, oral administration was cardioprotective and reversed by L-NAME. However, diosmin did not improve the post-ischemic recovery. Conclusions: This study supports the use of Gomphrena perennis L. tincture as an antispasmodic and hypotensive agent. Moreover, it has been demonstrated to be preventive of post-ischemic cardiac dysfunction. However, diosmin would not be responsible for these effects.Facultad de Ciencias Exacta

Antispasmodic, cardioprotective and blood-pressure lowering properties of Gomphrena perennis L. and its mechanisms of action

Background: Gomphrena perennis L. is a native plant of South America whose pharmacological properties have not been studied yet. Aim: To evaluate the cardiovascular and intestinal pharmacological effects of Gomphrena perennis L. leaves tincture (GphT) and the mechanisms involved. Experimental procedure: The chromatographic profile of GphT was done. Its ex vivo effects were evaluated by contractile concentration-response curves (CRCs) obtained from the agonist carbachol or calcium found in isolated rat small intestine, as well as in the relaxant CRCs. Cardiac effects were evaluated on isolated rat hearts exposed to ischemia/reperfusion (I/R). Experiments in vivo were performed to evaluate the diuretic activity in conscious rats and the hypotensive effect in anaesthetised rats. Results: Fifteen flavonoids were identified in GphT by HPLC-UV, including diosmin. GphT induced a non-competitive inhibition in both carbachol and calcium CRCs on rat small intestine. The first was not affected by indomethacin. Moreover, GphT, unlike diosmin, relaxed the contracture produced by a high-potassium solution in a dose-dependently way. Neither propranolol nor L-NAME changed it. GphT did not show diuretic activity but induced hypotension insensitive to L-NAME. While GphT perfusion of isolated hearts increased injury consequent to I/R, oral administration was cardioprotective and reversed by L-NAME. However, diosmin did not improve the post-ischemic recovery. Conclusions: This study supports the use of Gomphrena perennis L. tincture as an antispasmodic and hypotensive agent. Moreover, it has been demonstrated to be preventive of post-ischemic cardiac dysfunction. However, diosmin would not be responsible for these effects.Fil: Bonilla, Adriana Milena. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Ciencias Biológicas. Cátedra de Farmacología; ArgentinaFil: Gavilánez Buñay, Tatiana C.. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Ciencias Biológicas. Cátedra de Farmacología; ArgentinaFil: Bayley, Matías. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Ciencias Biológicas. Cátedra de Farmacología; ArgentinaFil: Colareda, Germán A.. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Ciencias Biológicas. Cátedra de Farmacología; ArgentinaFil: Matera, Soledad Inés. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Ciencias Biológicas. Cátedra de Farmacología; ArgentinaFil: Flores, María Luján. Universidad Nacional de la Patagonia "San Juan Bosco". Facultad de Ciencias Naturales - Sede Comodoro. Departamento de Farmacia. Cátedra de Farmacognosia; ArgentinaFil: Córdoba, Osvaldo León. Universidad Nacional de la Patagonia "San Juan Bosco". Facultad de Ciencias Naturales - Sede Comodoro; ArgentinaFil: Prieto, Julián José. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Ciencias Biológicas. Cátedra de Control de Calidad de Medicamentos; ArgentinaFil: Ruiz, María Esperanza. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Ciencias Biológicas. Cátedra de Control de Calidad de Medicamentos; ArgentinaFil: Consolini, Alicia Elvira. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Ciencias Biológicas. Cátedra de Farmacología; ArgentinaFil: Ragone, María Inés. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Ciencias Biológicas. Cátedra de Farmacología; Argentin

Caso clínico de enfermería: modelo de adaptación en adolescente con síndrome de Felty y Rhupus

Introducción. El síndrome de Rhupus es la superposición de dos enfermedades autoinmunes, la artritis reumatoide o artritis idiopática juvenil y el lupus eritematoso sistémico, la prevalencia es de 7-401 por 100,000 niños. El síndrome de Felty se caracteriza por la tríada de artritis idiopática juvenil, esplenomegalia y neutropenia; padecer más de una patología reumática es un extraño fenómeno estimado entre el 0.01-2%. Objetivo. Describir el proceso de atención de enfermería integral en una adolescente con Rhupus y síndrome de Felty, bajo el modelo de adaptación de Callista Roy. Metodología. Caso clínico de enfermería en una paciente de 15 años seleccionada en hospitalización pediátrica, con previo consentimiento informado; intervenida a través del proceso de atención de enfermería estructurado según la taxonomía de la North American Nursing Diagnosis Association, la Clasificación de Resultados de Enfermería, y la Clasificación de Intervenciones de Enfermería, con intervenciones intrahospitalarias y seguimiento con tele-enfermería. Resultados. Mejoría de la ambulación y afrontamiento de problemas evidenciados por el aumento del bienestar de la paciente y la familia. Conclusiones. Ante una enfermedad desconocida, el proceso de atención de enfermería, con intervenciones directas y acompañamiento continuo, permite realizar una atención integral, a fin de lograr la adaptación de la paciente y su familia. Introduction. Rhupus syndrome is the overlap of two autoimmune diseases, rheumatoid arthritis or juvenile idiopathic arthritis, and systemic lupus erythematosus, with a prevalence of 7-401 per 100,000 children. Felty’s syndrome is characterized by the triad of juvenile idiopathic arthritis, splenomegaly, and neutropenia; experiencing more than one rheumatic pathology is a rare phenomenon estimated between 0.01-2%. Objective. Describe the comprehensive nursing care process in an adolescent with Rhupus and Felty’s syndrome, under the adaptation model of Callista Roy. Methodology. Nursing case study of a 15-year-old patient selected in pediatric hospitalization, with prior informed consent; intervened through the structured nursing care process according to the taxonomy of the North American Nursing Diagnosis Association, the Nursing Outcomes Classification, and the Nursing Interventions Classification, with in-hospital interventions and follow-up through tele-nursing. Results. Improvement in ambulation and coping with problems evidenced by the increased well-being of the patient and the family. Conclusions. Faced with an unknown disease, the nursing care process, with direct interventions and continuous support, allows for comprehensive care to achieve the adaptation of the patient and her family. Introdução. A síndrome de Rhupus é a sobreposição de duas doenças autoimunes, artrite reumatoide ou artrite idiopática juvenil e lúpus eritematoso sistêmico, a prevalência é de 7-401 por 100,000 crianças. A síndrome de Felty é caracterizada pela tríade de artrite idiopática juvenil, esplenomegalia e neutropenia; sofrer de mais de uma patologia reumática é um fenômeno estranho estimado entre 0.01-2%. Objetivo. Descrever o processo de assistência integral de enfermagem em uma adolescente com Rhupus e síndrome de Felty, sob o modelo de adaptação de Callista Roy. Metodologia. Caso clínico de enfermagem em uma paciente de 15 anos selecionada em internação pediátrica, com prévio consentimento informado; ela teve intervenção por meio do processo de cuidado de enfermagem estruturado segundo a taxonomia da North American Nursing Diagnosis Association, a Classificação dos Resultados de Enfermagem e a Classificação das Intervenções de Enfermagem, com intervenções intra-hospitalares e acompanhamento com tele-enfermagem. Resultados. Melhora na deambulação e enfrentamento de problemas evidenciados pelo aumento do bem-estar do paciente e da família. Conclusões. Diante de uma doença desconhecida, o processo de assistência de enfermagem, com intervenções diretas e acompanhamento contínuo, permite um cuidado integral, de forma a alcançar a adaptação do paciente e de sua família

La Dorada, Caldas : un lugar mágico lleno de paz y emociones mil ¡Que viva mi terruño que tanto amo! : recopilación de cuentos folclóricos

En el libro recupera cuentos folclóricos, versos, canciones, juegos y mitos producto de la tradición oral difundida en La Dorada Caldas y le da reconocimiento a los narradores de la cultura oral del poblado.In the book, he recovers folk tales, verses, songs, games and myths that are the product of the oral tradition spread in La Dorada Caldas and gives recognition to the narrators of the oral culture of the town.El fantasma -- Anécdota de la patasola -- Historia del mohán -- El pollito pio -- Nos ayudamos -- La emboscada -- Toño un amigo con diversidad -- El horripilante olvido en medio de un temblor -- Valoremos -- Mito de un arriero -- El juego de la candela -- Canción el capitán de un buque -- Versos -- Multiplicadores de la cultura oral.na66 página

Congreso Internacional de Responsabilidad Social Apuestas para el desarrollo regional.

Congreso Internacional de Responsabilidad Social: apuestas para el desarrollo regional [Edición 1 / Nov. 6 - 7: 2019 Bogotá D.C.]El Congreso Internacional de Responsabilidad Social “Apuestas para el Desarrollo Regional”, se llevó a cabo los días 6 y 7 de noviembre de 2019 en la ciudad de Bogotá D.C. como un evento académico e investigativo liderado por la Corporación Universitaria Minuto de Dios -UNIMINUTO – Rectoría Cundinamarca cuya pretensión fue el fomento de nuevos paradigmas, la divulgación de conocimiento renovado en torno a la Responsabilidad Social; finalidad adoptada institucionalmente como postura ética y política que impacta la docencia, la investigación y la proyección social, y cuyo propósito central es la promoción de una “sensibilización consciente y crítica ante las situaciones problemáticas, tanto de las comunidades como del país, al igual que la adquisición de unas competencias orientadas a la promoción y al compromiso con el desarrollo humano y social integral”. (UNIMINUTO, 2014). Dicha postura, de conciencia crítica y sensibilización social, sumada a la experiencia adquirida mediante el trabajo articulado con otras instituciones de índole académico y de forma directa con las comunidades, permitió establecer como objetivo central del evento la reflexión de los diferentes grupos de interés, la gestión de sus impactos como elementos puntuales que contribuyeron en la audiencia a la toma de conciencia frente al papel que se debe asumir a favor de la responsabilidad social como aporte seguro al desarrollo regional y a su vez al fortalecimiento de los Objetivos de Desarrollo Sostenible