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Search Results: 1 - 10 of 199675 matches for " Luisa; álvarez Gómez "
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Efecto de cinco extractos de plantas colombianas sobre espermatozoides humanos Effect of five Colombian plant extracts on human spermatozoids
Ginet Gallego,Dubier Henao,Luisa Ospina,ángela álvarez Gómez
Revista Cubana de Plantas Medicinales , 2012,
Abstract: Introducción: las pruebas de capacitación espermática y la actividad espermicida o inmovilizante usando extractos de plantas permiten incrementar los conocimientos actuales en el área reproductiva. Objetivos: evaluar el efecto de 5 extractos de las plantas colombianas Bocconia frutescens, Bomarea setaceas, Muehlenbeckia platyclada, Zanthoxylum lenticulare y Piper subpedale sobre los espermatozoides humanos. Métodos: los espermatozoides humanos se incubaron con los extractos de las plantas, se valoró su movilidad y viabilidad. Adicionalmente la capacitación espermática se evaluó utilizando albúmina sérica bovina. Resultados: después de una evaluación inicial del efecto de los extractos de las plantas sobre la movilidad o viabilidad de los espermatozoides, se seleccionaron los extractos de B. frutescens y B. setaceas para realizar los ensayos de capacitación espermática, porque no alteraron ni la movilidad ni la viabilidad espermática, y se seleccionaron los extractos de M. platyclada, Z. lenticulare y P. subpedale para los ensayos de actividad espermicida debido a que afectaron la movilidad progresiva espermática. Conclusiones: este trabajo permitió proponer 3 plantas con promisoria actividad espermicida, y se logró estandarizar un sistema biológico en el cual se pudo evaluar el efecto capacitante de algunos extractos sobre los espermatozoides humanos. Introduction: the sperm capacitation test and the spermicidal activity or immobilization using plant extracts, allows for an increase in the current knowledge on the reproductive area. Objectives: to evaluate the effect of five extracts from Colombian plants Bocconia frutescens, Bomarea setaceas, Muehlenbeckia platyclada, Zanthoxylum lenticulare and Piper subpedale on human spermatozoa. Methods: human spermatozoa were incubated with each extract and their motility and viability were evaluated. Additionally, sperm capacitation was evaluated using bovine serum albumin. Results: after an initial assessment of the effect of plant extracts on human spermatozoa, the extracts from B. frutescens and B. setaceas were selected for capacitating tests since they did not change the sperm motility and viability. Additionally, M. platyclada, Z. lenticulare and P. subpedale extracts were selected for immobilization or spermicidal activities tests because they had had an effect on sperm progressive motility. Conclusions: this study suggested three plants with promising spermicidal effect; in addition to the standardization of a biological system, allowing the assessment of the capacitation effect of some extracts over huma
VULNERABILIDAD DE LOS NI?OS DE LA CALLE
Gómez,María Luisa; Sevilla,María de la Luz; álvarez,Nelson;
Acta bioethica , 2008, DOI: 10.4067/S1726-569X2008000200013
Abstract: this article offers an analysis of 20 semi-directed, open interviews realized with street children in mexico city, which includes diverse topics (family, violence, sexuality, obtaining resources and addictions) and considers two life stages (before abandoning the home and their life on the street). these groups live in an environment with conditions of vulnerability, where the satisfaction of basic necessities is the primary focus of their decision making, causing lack of future expectations. one of their behavior patterns is drug abuse, solvents being the most typical drug of choice. their sexuality, acted out in conditions of vulnerability, gives rise to frequent unwanted pregnancies and genital infections. in this context, the reproductive health of these marginal groups will have to be considered.
VULNERABILIDAD DE LOS NI OS DE LA CALLE VULNERABILIDADE DAS CRIAN AS DE RUA VULNERABILITY OF STREET CHILDREN
María Luisa Gómez,María de la Luz Sevilla,Nelson álvarez
Acta Bioethica , 2008,
Abstract: Este artículo informa sobre un análisis de 20 entrevistas abiertas, semidirigidas, realizadas a ni os de la calle en México D.F., construidas sobre diversos tópicos (Familia, Violencia, Sexualidad, Obtención de Recursos y Adicciones), y considerando dos etapas de su vida (antes de abandonar el hogar y su vida en la calle). Estos grupos se insertan en su entorno en condiciones de vulnerabilidad, en las cuales la satisfacción de las necesidades primarias es el objetivo para la toma de decisiones, por eso la falta de expectativas de futuro. Uno de sus patrones de comportamiento es el consumo de drogas, siendo los solventes los más usuales. El ejercicio de su sexualidad se da en condiciones de inseguridad, por ello son frecuentes los embarazos no deseados y las infecciones genitales. Es este contexto habrá que plantearse la salud reproductiva de estos grupos marginales. Este artigo informa sobre uma análise de 20 entrevistas abertas, semidirigidas, realizadas em crian as de rua na Cidade do México, construídas sobre diversos tópicos (Família, Violência, Sexualidade, Obten o de Recursos e Drogas), e considerando duas etapas de sua vida (antes de abandonar o lar e sua vida na rua). Estes grupos se inserem no seu entorno em condi es de vulnerabilidade, nas quais a satisfa o das necessidades primárias é o objetivo para a tomada de decis es, daí a falta de expectativas de futuro. Um de seus padr es de comportamento é o consumo de drogas, sendo os solventes os mais usuais. O exercício de sua sexualidade se dá em condi es de inseguran a. Por isso s o freqüentes as gravidezes n o desejadas e as infec es genitais. é neste contexto que haverá de se questionar a saúde reprodutiva destes grupos marginais. This article offers an analysis of 20 semi-directed, open interviews realized with street children in Mexico City, which includes diverse topics (Family, Violence, Sexuality, Obtaining Resources and Addictions) and considers two life stages (before abandoning the home and their life on the street). These groups live in an environment with conditions of vulnerability, where the satisfaction of basic necessities is the primary focus of their decision making, causing lack of future expectations. One of their behavior patterns is drug abuse, solvents being the most typical drug of choice. Their sexuality, acted out in conditions of vulnerability, gives rise to frequent unwanted pregnancies and genital infections. In this context, the reproductive health of these marginal groups will have to be considered.
Manejo hospitalario de la meningoencefalitis bacteriana por S. Neumoniae
Roberto álvarez Fumero,Dania Luisa Manresa Gómez,Bertha Lidia Castro Pacheco,Miosotis Pérez Orta
Revista Cubana de Pediatr?-a , 2003,
Abstract: La actitud terapéutica ante la meningitis bacteriana (MEB) es uno de los retos más importantes a los que se enfrenta el pediatra, pues de su oportuno y adecuado manejo depende el pronóstico. Los cambios en la epidemiología de los síndromes neurológicos infecciosos bacterianos observados en Cuba a partir del a o 2000, promovieron la implementación de modificaciones al régimen terapéutico antibiótico convencional. En este artículo, sin olvidar que el tratamiento ideal es el preventivo, se expone una revisión actualizada del manejo hospitalario de las MEB por S.pneumoniae, que incluye: adopción de medidas generales, instauración temprana de acciones dirigidas a atenuar los efectos perjudiciales de la respuesta inflamatoria sistémica, conducta específica contra el agente (antibioticoterapia) y finalmente la identificación precoz e inicio de la rehabilitación de secuelas. Se hace énfasis en las modificaciones al esquema antibiótico adoptadas recientemente por la Comisión Nacional de SNI. Se exponen consideraciones sobre la introducción de la vancomicina en esquema antimicrobiano de las MEB por S.pneumoniae. The therapeutic attitude to face bacterial meningitis (BME) is one of the most important challenges for pediatricians, since the prognosis depends on its timely and adequate management The changes in the epidemiology of the bacterial infectious neurological syndromes ocurred in Cuba from 2000 on, promoted the implementation of modifications in the conventional therapeutical antibiotic regimen. In this article, without forgetting that the ideal treatment is the preventive one, it is exposed an updated review of the hospital management of BME due to S.Pneumoniae that includes: adoption of general measures, early establishment of actions directed to alleviate the harmful effects of the systemic inflammatory reponse, specific conduct against the agent (antibiotic therapy) and, finally, the identification and beginning of the rehabilitation of sequelae. Emphasis is made on the modifications of the antibiotic scheme recently adopted by the National Commission of the National System of Information. Considerations are made on the introduction of vancomycin in the antimicrobial scheme of the BME caused by S. pneumnoniae.
Actividad espermicida y citotóxica del extracto de Sapindus saponaria L. (jaboncillo) Evaluation of the spermicidal and cytotoxic activity of extracts of Sapindus saponaria L. (jaboncillo)
Luisa Ospina Medina,ángela álvarez Gómez,Víctor Arango Valencia,ángela Cadavid Jaramillo
Revista Cubana de Plantas Medicinales , 2013,
Abstract: Introducción: los espermicidas están entre los métodos anticonceptivos que pueden inmovilizar o matar los espermatozoides. Objetivo: evaluar la actividad espermicida y citotóxica de los extractos de Sapindus saponaria L., conocida como jaboncillo, sobre espermatozoides humanos y la línea celular HeLa, respectivamente. Métodos: las muestras de semen donadas por individuos sanos se incubaron con los extractos de Sapindus saponaria L. y sus respectivas fracciones. La movilidad y la viabilidad espermática se evaluó antes y después de cada tratamiento. Adicionalmente, el efecto citotóxico del extracto se valoró sobre la línea celular HeLa mediante el ensayo 3-(4,5 dimetiltiazol-2-il)-5-(3-carboximetoxifenil)-2-(4-sulfofenil)-2H-tetrazolio (MTS). Resultados: el máximo efecto espermicida se observó cuando las muestras de semen se incubaron con la fracción polar del extracto de hojas de Sapindus saponaria L., luego de 5 min de tratamiento (p< 0,05). No se encontró efecto citotóxico en la línea celular HeLa luego de 6 y 12 h de tratamiento con la fracción polar del extracto de hojas. Conclusión: el extracto de Sapindus saponaria L. puede ser una nueva opción como espermicida con menos efectos adversos. Introduction: spermicides are contraceptive methods aimed at either immobilizing or killing spermatozoa. Objective: evaluate the spermicidal and cytotoxic activity of extracts of Sapindus saponaria L. (jaboncillo) on human spermatozoa and the HeLa cell line, respectively. Methods: semen samples from healthy individuals were incubated with extracts of Sapindus saponaria L. and their fractions. Sperm motility and viability were measured before and after each treatment. Additionally, the cytotoxic effect of the extract on the HeLa cell line was assessed by the 3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxy methoxy phenyl)-2-(4-sulfophenyl)-2H-tetrazolium MTS assay. Results: maximum spermicidal effect was observed when semen samples were incubated with the polar fraction of Sapindus saponaria L. leaf extract after 5 minutes of treatment (p< 0.05). No cytotoxic effect on the HeLa cell line was found after 6 and 12 hours of treatment with the polar fraction of the leaf extract. Conclusion: the extract of Sapindus saponaria L. may be a new spermicidal option with fewer adverse effects.
Efecto de cinco extractos de plantas colombianas sobre espermatozoides humanos
Gallego,Ginet; Henao,Dubier; Ospina,Luisa; álvarez Gómez,ángela; Arango,Víctor; Cardona Maya,Walter; Cadavid,ángela;
Revista Cubana de Plantas Medicinales , 2012,
Abstract: introduction: the sperm capacitation test and the spermicidal activity or immobilization using plant extracts, allows for an increase in the current knowledge on the reproductive area. objectives: to evaluate the effect of five extracts from colombian plants bocconia frutescens, bomarea setaceas, muehlenbeckia platyclada, zanthoxylum lenticulare and piper subpedale on human spermatozoa. methods: human spermatozoa were incubated with each extract and their motility and viability were evaluated. additionally, sperm capacitation was evaluated using bovine serum albumin. results: after an initial assessment of the effect of plant extracts on human spermatozoa, the extracts from b. frutescens and b. setaceas were selected for capacitating tests since they did not change the sperm motility and viability. additionally, m. platyclada, z. lenticulare and p. subpedale extracts were selected for immobilization or spermicidal activities tests because they had had an effect on sperm progressive motility. conclusions: this study suggested three plants with promising spermicidal effect; in addition to the standardization of a biological system, allowing the assessment of the capacitation effect of some extracts over human spermatozoa.
Sexualidad violenta. La vida de los Ni os de la Calle
Nelson Eduardo álvarez Licona,María de la Luz Sevilla González,María Luisa Gómez Hernández
E? : Revista de Humanidades Médicas & Estudios Sociales de la Ciencia y la Tecnología , 2011,
Abstract: La violencia y vejaciones que viven muchos ni os en sus propios hogares provoca que opten por abandonar a su familia e insertarse a vivir en la calle, donde existen grupos de personas que han dando lugar a un fenómeno sociológico conocido como Ni os de la Calle. Estos grupos humanos se insertan en su entorno en condiciones de vulnerabilidad, donde la satisfacción de las necesidades primarias como el comer, dormir, la seguridad o el enfrentar las condiciones climáticas son los objetivos para la toman de decisiones – de ahí la falta de expectativas de futuro. En este contexto el ejercicio de su sexualidad se da en condiciones de inseguridad; son frecuentes las violaciones, el comercio sexual de menores, prácticas sexuales sin protección, embarazos no deseados y las infecciones de transmisión sexual.
Variables físicas que explican la variabilidad de suelo aluvial y su comportamiento espacial
Jaramillo, Daniel Francisco Jaramillo;Gómez, María Luisa Anaya;Moná, Carlos Andrés Restrepo;Sánchez, Hugo Alberto González;Mejía, Fernando álvarez;
Pesquisa Agropecuária Brasileira , 2011, DOI: 10.1590/S0100-204X2011001200017
Abstract: the objective of this work was to use the principal component and semivariance analyses to select physical variables that could explain the variability of an alluvial soil, in order to establish the spatial behavior of the chosen variables so that the location of experimental plots could be technically defined to study the abrasiveness effect on the wearing away of farm equipment. field tests were performed in 2008, on a 6,000 m2 flat lot with medium to heavy soil texture (vertic haplustepts). an intensive sampling was done in a grid of 10x14 m. the variables which had the most weight on the first three principal components were the contents of silt, fine and intermediate sand, intermediate gravel, soil moisture at field capacity, and the hygroscopic coefficient. except for the half sand and the field capacity, the other properties showed a high spatial dependence, and their distribution showed that in the experimental plot there are three sectors of differential accumulation of silt and fine sand. the combination of principal component analysis and geostatistics allowed for defining the soil properties involved in the wear of tools, their spatial pattern and the most appropriate way of distributing plots to study soil abrasiveness.
Manejo hospitalario de la meningoencefalitis bacteriana por S. Neumoniae
álvarez Fumero,Roberto; Manresa Gómez,Dania Luisa; Castro Pacheco,Bertha Lidia; Pérez Orta,Miosotis; Rojo Casares,Ibis; Quintana Jardines,Ibrahim;
Revista Cubana de Pediatr?-a , 2003,
Abstract: the therapeutic attitude to face bacterial meningitis (bme) is one of the most important challenges for pediatricians, since the prognosis depends on its timely and adequate management the changes in the epidemiology of the bacterial infectious neurological syndromes ocurred in cuba from 2000 on, promoted the implementation of modifications in the conventional therapeutical antibiotic regimen. in this article, without forgetting that the ideal treatment is the preventive one, it is exposed an updated review of the hospital management of bme due to s.pneumoniae that includes: adoption of general measures, early establishment of actions directed to alleviate the harmful effects of the systemic inflammatory reponse, specific conduct against the agent (antibiotic therapy) and, finally, the identification and beginning of the rehabilitation of sequelae. emphasis is made on the modifications of the antibiotic scheme recently adopted by the national commission of the national system of information. considerations are made on the introduction of vancomycin in the antimicrobial scheme of the bme caused by s. pneumnoniae.
Plantas medicinales en una aldea del estado de Tabasco, México
Gómez álvarez, Regino;
Revista fitotecnia mexicana , 2012,
Abstract: the use of medicinal plants is the result of the experience and intimate contact of human beings with nature and the coexistence among different cultures. this wisdom has permitted the survival of communities living in remote areas, where medical services are scarce, and midwives, "herbalists" and folk healers are responsible for the people health. in this study, plants were collected and 20 families, two midwives, one ejido sheriff, and one representative of a group of women that produce natural preparations, were interviewed. the information was processed and documented with the support of specialists in ethnobotany, visits to plant collections and enquiries at universities and research centers. results show that 112 medicinal plants are used for alleviating medical problems. these plants are grouped in 57 botanical families, most of them herbaceous and arborous. leaf infusions are the most common way for making medicines. the knowledge of these plants and their uses come mainly from grandparents, parents and neighbors, and most of the plants are grown in the village.
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