Esteroides biologia wikipedia

The purpose of this study was to assess the influence of the administration of high doses of androgenic anabolic steroids (AAS) on endocrine and semen parameters. Thirty volunteering bodybuilders were studied (ages ranging between +/- years). A history of anabolic steroid administration was recorded for fifteen subjects, and results of semen analysis and endocrine parameters were compared with data from fifteen bodybuilders not using steroids. In those subjects using AAS, eight had sperm counts under the lower normal limit (20 x 10(6) sperm/ml), three had azoospermia, two polyzoospermia, and two had normal sperm counts. The percentage of morphologically normal sperm was significantly reduced, only % had normal spermatozoa. In the control group, only one subject had oligozoospermia. The hormonal parameters revealed reduced FSH ( +/- vs +/- , p < ) and PRL ( +/- vs +/- , p < ) levels. LH, T, E2 and DHEA levels did not vary.

Main description: Biología molecular y celular presenta al lector la biología molecular y celular en formato visual, dedicando especial atención a los aspectos relacionados con la salud y la enfermedad. La obra incluye numerosas ilustraciones a todo color con formato esquemático. Entre sus principales características destaca el enfoque en temas relacionados con la salud y las enfermedades, así como los aspectos característicos de la serie LIR: ilustraciones a color, esquemas, resúmenes de los capítulos, preguntas de revisión y estudios de casos.

Esteroides biologia wikipedia

esteroides biologia wikipedia


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