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Revista Mexicana de Urología
Article . 2015 . Peer-reviewed
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Revista Mexicana de Urología
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Revista Mexicana de Urología
Article . 2015
License: CC BY NC ND
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La eyaculación no tiene impacto en los niveles de antígeno prostático específico

Authors: Ramírez-Bonilla, M.; Villeda-Sandoval, C.I.; Romero-Vélez, G.; Lisker-Cervantes, A.; Cendejas-Gómez, J.J.; González-Sánchez, B.; Olvera-Posada, D.; +3 Authors

La eyaculación no tiene impacto en los niveles de antígeno prostático específico

Abstract

ResumenAntecedentesEl antígeno prostático específico (APE) es un marcador tumoral órgano-específico usado en el diagnóstico de cáncer de próstata, sin ser enfermedad-específico. El efecto de la eyaculación sobre la concentración del APE es controversial.ObjetivoEvaluar el impacto en los valores de APE posterior a la eyaculación sobre la indicación de biopsia, en una población cribada.MétodosSe realizó una medición de APE basal en 100 pacientes con al menos 7 días de abstinencia sexual. Una segunda determinación fue tomada dentro de las 48h posteriores a la eyaculación. Las diferencias numéricas fueron comparadas utilizando la prueba t de Student, mientras que la significación clínica fue medida (test McNemar) observando los pacientes que debían someterse a biopsia según valores pre y posteyaculación.ResultadosEl promedio de edad fue de 52.7±8.6años. La media del APE basal fue de 1.39±1.43ng/ml, y de 1.48±1.51ng/ml después de la eyaculación (p=0.54). Dos valores de APE aumentaron suficientemente para indicación de biopsia usando un parámetro de 4ng/ml posterior a la eyaculación. El test de McNemar no mostró diferencias estadísticamente significativas (p=0.500).ConclusionesNo existe diferencia significativa en el APE posteyaculación. Este cambio no fue clínicamente relevante.AbstractBackgroundProstate-specific antigen (PSA) is a tumor marker used in the diagnosis of prostate cancer; it is organ-specific but it is not disease-specific. The effect of ejaculation on PSA concentration is controversial.AimTo evaluate the impact of PSA values after ejaculation on biopsy indication in a screened population.MethodsBaseline PSA was measured in 100 patients that had abstained from sexual activity for at least 7days. A second measurement was carried out 48h after ejaculation. The numerical differences were compared using the Student's t test. The McNemar's test was used to analyze pre and post-ejaculation values and clinical significance was defined as a PSA value above a pre-established limit for biopsy indication.ResultsMean age of the patients was 52.7±8.6years. The mean baseline PSA was 1.39±1.43ng/mL and after ejaculation was 1.48±1.51ng/mL (P=.54). Two patients had PSA values that increased sufficiently for biopsy indication, using a parameter of 4ng/mL after ejaculation. The McNemar's test showed no statistically significant differences (P=.500).ConclusionsThere was no statistically significant difference in PSA after ejaculation and this change had no clinical relevance.

Keywords

Eyaculación, Cáncer de próstata, Prostate cancer, Antígeno prostático específico, Ejaculation, Prostate-specific antigen

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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