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Search Results: 1 - 10 of 9222 matches for " Walter Cardona Maya "
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Definición actual y tratamiento de la eyaculación precoz
Cardona Maya,Walter;
Archivos Espa?oles de Urología (Ed. impresa) , 2010, DOI: 10.4321/S0004-06142010000100008
Abstract: objectives: to discuss a concept about the current definition and treatment of premature ejaculation. methods: a detailed review was performed on the current definition and treatment of premature ejaculation. results: several definitions were found, however a consensus on how to define premature ejaculation is lacking. in addition, there are several treatments: daily, on demand and topical agents. conclusions: premature ejaculation implicated three specific characteristics: short intravaginal ejaculatory latency time, lack of control, and sexual dissatisfaction.
Concentración espermática: ?Necesitamos un nuevo valor de referencia?
Cardona Maya,Walter;
Archivos Espa?oles de Urología (Ed. impresa) , 2010, DOI: 10.4321/S0004-06142010000200009
Abstract: objectives: to evaluate the sperm count in fertile men, general population, and infertile men in different regions of the world. methods: sperm counts were recorded according to their fertility status, proven fertility, men recruited from an andrology/infertility clinic, or healthy men results: the average of sperm count in the different studies is lower in infertile men that in fertile men (p>0.001) and in the general population (p>0.001). conclusion: based on this analysis the normal sperm count is about 65 million per ml. using these reference value, only the 25% of the studies in infertile men are above this value, and the 75% studies with fertile men (>65 x 106 sperm/ml).
Posible relación entre el uso de isotretinoína y la presencia de globozoospermia
Pe?a,Ruth Beatriz; Cadavid,ángela; Cardona Maya,Walter;
Revista Cubana de Obstetricia y Ginecolog?-a , 2011,
Abstract: isotretinoin was tested for treatment of acne from 1982 and nowadays is used for treatment of a wide number of skin alterations. among the recommendations of the american academy of dermatology consensus conference is included the non-use of this treatment in pregnant women, however, it is not mentioned the potential risks in sexual and reproductive men health, group in which is commonly used for treatment of acne.
Posible relación entre el uso de isotretinoína y la presencia de globozoospermia Possible relationship between Isotretinoin use and globozoospermia
Ruth Beatriz Pe?a,ángela Cadavid,Walter Cardona Maya
Revista Cubana de Obstetricia y Ginecolog?-a , 2011,
Abstract: La isotretinoína fue aprobada para el tratamiento del acné desde 1982 y en la actualidad es usada para el tratamiento de un amplio número de alteraciones dermatológicas. Entre las recomendaciones de la American Academy of Dermatology Consensus Conference está no usar este tratamiento en mujeres embarazadas, sin embargo no se hace mención a los posibles riesgos en la salud sexual y reproductiva masculina, población en la cual también es comúnmente usado este medicamento para el tratamiento del acné. Isotretinoin was tested for treatment of acne from 1982 and nowadays is used for treatment of a wide number of skin alterations. Among the recommendations of the American Academy of Dermatology Consensus Conference is included the non-use of this treatment in pregnant women, however, it is not mentioned the potential risks in sexual and reproductive men health, group in which is commonly used for treatment of acne.
Parámetros seminales en hombre fértiles de dos poblaciones suramericanas
Berdugo,Jesús; Andrade-Rocha,Fernando; Cardona-Maya,Walter;
Archivos Espa?oles de Urología (Ed. impresa) , 2009, DOI: 10.4321/S0004-06142009000800006
Abstract: objectives: this retrospective study compared semen parameters from fertile men of two south american cities (medellín-colombia and petrópolis-brazil) to investigate their differences in some semen parameters. methods: we evaluated semen volume using a graduated tube, total progressive motility (a + b) using light microscopy (40x) and sperm concentration using a neubauer counting chamber. results: we observed that fertile men from medellín presented a significantly lower volume (p<0.0001), whereas individuals from petrópolis presented a significantly lower percentage of total progressive motility (p<0.0001). on the other hand, no difference was found in sperm concentration (p>0.05). conclusions: in conclusion, this study showed differences in semen parameters between fertile men of these south american populations. we think that these differences could be attributed to the geographical variations, like those observed in other countries. however, new studies are required to investigate this phenomenon and their causes.
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.
Evaluación de los parámetros seminales en tres ciudades colombianas, diferencias regionales
Berdugo,Jesús; Madero,José Ignacio; Díaz-Yunez,Israel; Restrepo Betancur,Fernando; Cardona Maya,Walter;
Revista Cubana de Obstetricia y Ginecolog?-a , 2011,
Abstract: introduction: currently there is no study that shows evidence on differences in sperm parameters from colombian men. objective: the aim of this study was to evaluate the semen parameters in men from three colombian cities: cartagena, bogotá, and medellín. methods: we performed a retrospective analysis of seminal parameters databases of individuals who attended a reproductive center in cartagena (n= 337), bogotá (n= 90) and medellin (n= 287). the data analysis was performed using a multivariate analysis of variance which allows us to examine several variables. results: difference in semen volume between the population from bogota and cartagena was significant (p < 0.001). the progressive motility a, and a + b showed statistical difference (< 0.001) among the populations from medellin and cartagena respect to bogota. the concentration was different between individuals from bogota and medellin when compared to individuals from cartagena (p < 0.001); additionaly, a multivariate analysis of variance with orthogonal canonic contrast showed a significant difference in the semen parameters between the populations of medellín compared to populations from cartagena and bogota (p< 0.001). conclusions: this study suggests differences in the seminal parameters between men who consulted a fertility center in medellin, bogota, and cartagena; additionally, this study is the first attempt to the determine seminal parameters in colombia.
Evaluation of atypical semen parameters in individuals whose couples had a history of early recurrent embryo death: in search for a reference value Evaluación de parámetros seminales no convencionales en individuos cuyas parejas presentan muerte embrionaria temprana recurrente: en busca de un valor de referencia
Edisson Rodríguez,Aura María Gil-Villa,Daniel Camilo Aguirre-Acevedo,Walter Cardona-Maya
Biomédica , 2011,
Abstract: Introduction. Previous studies related alterations in non-conventional seminal parameters with recurrent early embryonic death for one couple. A reference standard of clinical assessment is required for the management of these kinds of patients. Objective. Normal semen parameters were established based on functional tests including lipid peroxidation of sperm membranes, antioxidant capacity of seminal plasma and integrity of sperm chromatin to compare with men whose partners have recurrent early embryonic death. These parameters set reference values to identify subfertile individuals whose condition can be attributed to altered semen parameters. Materials and methods. The conventional and non-conventional semen parameters of 47 samples of semen were evaluated. Thirty-six samples were from subfertile individuals whose partners had a history of early recurrent embryo death, and 11 samples were from individuals with recent evidence of normal fertility. Results. By discriminant analysis, the two groups were classified as follows: a value below 0.50 for 86.1% of individuals in the group of recurrent early embryonic death, and a value above 0.50 to classify 81.8% of individuals in the group of recent fertility. Conclusions. This reference value of 0.5 based on the results of sperm tests can identify infertile male patients whose partners have a history of early embryonic death. This will aid the physician to suggest treatments more focused on the possible cause of subfertility. Introducción. En estudios previos se relacionaron las alteraciones en los parámetros espermáticos no convencionales con la presencia de muerte embrionaria temprana recurrente de la pareja; debido a esto, se planteó la necesidad de establecer un valor de referencia de utilidad clínica para el manejo de estos pacientes. Objetivo. Evaluar los parámetros seminales convencionales y las pruebas funcionales de lipoperoxidación de las membranas espermáticas, capacidad antioxidante del plasma seminal e integridad de la cromatina espermática, en individuos cuyas parejas presentan muerte embrionaria temprana recurrente, con el fin de obtener un valor de referencia y poder identificar aquellos individuos en quienes la disminución de la fertilidad se pueda demostrar con estas pruebas. Materiales y métodos. Se evaluaron los parámetros espermáticos convencionales y no convencionales de 47 muestras de semen, de las cuales, 36 pertenecían al grupo de individuos con disminución de la fertilidad por historia de muerte embrionaria temprana recurrente en sus parejas, y 11 muestras de individuos sanos con fe
Evaluación de parámetros seminales no convencionales en individuos cuyas parejas presentan muerte embrionaria temprana recurrente: en busca de un valor de referencia
Rodríguez,Edisson; Gil-Villa,Aura María; Aguirre-Acevedo,Daniel Camilo; Cardona-Maya,Walter; Cadavid,ángela P;
Biomédica , 2011,
Abstract: introduction. previous studies related alterations in non-conventional seminal parameters with recurrent early embryonic death for one couple. a reference standard of clinical assessment is required for the management of these kinds of patients. objective. normal semen parameters were established based on functional tests including lipid peroxidation of sperm membranes, antioxidant capacity of seminal plasma and integrity of sperm chromatin to compare with men whose partners have recurrent early embryonic death. these parameters set reference values to identify subfertile individuals whose condition can be attributed to altered semen parameters. materials and methods. the conventional and non-conventional semen parameters of 47 samples of semen were evaluated. thirty-six samples were from subfertile individuals whose partners had a history of early recurrent embryo death, and 11 samples were from individuals with recent evidence of normal fertility. results. by discriminant analysis, the two groups were classified as follows: a value below 0.50 for 86.1% of individuals in the group of recurrent early embryonic death, and a value above 0.50 to classify 81.8% of individuals in the group of recent fertility. conclusions. this reference value of 0.5 based on the results of sperm tests can identify infertile male patients whose partners have a history of early embryonic death. this will aid the physician to suggest treatments more focused on the possible cause of subfertility.
Comentarios sobre el artículo "Evaluación de las técnicas de capacitación espermática y su efecto en la fragmentación del ADN" Comments on "Assesment of sperm capacitation techniques and their effect on DNA fragmentation"
Wálter D Cardona-Maya
Revista Colombiana de Obstetricia y Ginecología , 2012,
Abstract:
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