Jesús Berdugo

The effects of male age on semen parameters: analysis of 1364 men attending an andrology center

Although the effect of maternal age on fertility is well known, it is unclear whether paternal age also affects fertility. The aim of this retrospective study was to establish an association between the age of the individuals from Medellin, Colombia with semen volume, rapid progressive motility (a), total progressive motility (a + b) and concentration. We evaluated semen volume using a graduated tube, progressive motility using light microscopy (40×) and sperm concentration using a Makler Chamber. Semen samples were grouped according to age into three arbitrary groups (≤ to 30 years; between 31 and 39 years; and ≥ to 40 years). The semen volume, rapid progressive motility (a) and total progressive motility (a + b), concentration and total sperm count were found to be inversely related to age (p < 0.05). The reduction in semen parameters of 1364 men attending an andrology center was associated with increasing age of the individuals.

Comparación de la concentración espermática usando la cámara de Makler y la cámara de Neubauer

Resumen Comparacion de la concentracion espermatica usando la camara de makler y la camara de neubauer Objetivo Determinar la concordancia entre el conteo de espermatozoides obtenido usando camara de Makler y de Neubauer, en eyaculados de individuos fertiles Diseno Estudio prospectivo realizado en el Grupo Reproduccion de la Universidad de Antioquia, Medellin-Colombia Metodos 112 eyaculados provenientes de individuos fertiles fueron analizados en el presente estudio. El recuento espermatico se realizo en la camara de Makler y en la camara de Neubauer; la comparacion entre ellas se determino con la prueba Bland-Altman plot Resultados El promedio de las concentraciones fue 107,8 y 106,2 x 106 espermatozoides/mL usando la camara de Makler y de Neubauer, respectivamente. Se encontro concordancia entre ambos metodos Conclusion Nuestros resultados muestran que la determinacion de la concentracion espermatica mediante la camara de Makler es tan exacta como la realizada con la camara de Neubauear y que ambas pueden ser usadas en el analisis rutinario de semen

Parámetros seminales en hombre fértiles de dos poblaciones suramericanas

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.

Is There A Close Relation between Sperm Count and Ejaculation Volume

Objective To evaluate the relation between sperm count and ejaculatory volume. Methods Semen samples from 1 364 men were collected and ejaculate volume and sperm count were performed. Results A low correlation (11.6%) was found but statistically significant (P Conclusion Sperm cells are diluted in the ejaculate volume, for this reason the ejaculates with more volume present less sperm count.