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Vol. 40. Issue 9.
Pages 549-555 (November 2016)
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Vol. 40. Issue 9.
Pages 549-555 (November 2016)
Original article
DOI: 10.1016/j.acuroe.2016.08.007
Hormonal changes after localized prostate cancer treatment. Comparison between external beam radiation therapy and radical prostatectomy
Cambios hormonales después del tratamiento de cáncer de próstata localizado. Comparación entre radioterapia de haz externo y prostatectomía radical
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J. Planasa,
Corresponding author
jplanas@vhebron.net

Corresponding author.
, A. Celmaa, J. Placera, X. Maldonadob, E. Trillaa, C. Salvadora, D. Lorentea, L. Regisa, M. Cuadrasa, J. Carlesc, J. Morotea
a Servicio de Urología, Hospital Universitari Vall d’Hebrón, Universitat Autònoma de Barcelona, Barcelona, Spain
b Servicio de Radioterapia, Hospital Universitari Vall d’Hebrón, Universitat Autònoma de Barcelona, Barcelona, Spain
c Servicio de Oncología Médica, Hospital Universitari Vall d’Hebrón, Universitat Autònoma de Barcelona, Barcelona, Spain
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Figures (1)
Tables (3)
Table 1. Patients’ characteristics.
Table 2. Hormonal changes in patients undergoing RP and EBRT. Hormonal changes in patients submitted to RP and EBRT from baseline to 3 months and from baseline to 12 months.
Table 3. Hormonal levels comparison at baseline, 3 months and 12 months between patients treated with RP and patients treated with EBRT.
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Abstract
Objective

To determine the influence of radical prostatectomy (RP) and external beam radiation therapy (EBRT) on the hypothalamic pituitary axis of 120 men with clinically localized prostate cancer treated with RP or EBRT exclusively.

Materials and methods

120 patients with localized prostate cancer were enrolled. Ninety-two patients underwent RP and 28 patients EBRT exclusively. We measured serum levels of luteinizing hormone, follicle stimulating hormone (FSH), total testosterone (T), free testosterone, and estradiol at baseline and at 3 and 12 months after treatment completion.

Results

Patients undergoing RP were younger and presented a higher prostate volume (64.3 vs. 71.1 years, p<0.0001 and 55.1 vs. 36.5g, p<0.0001; respectively). No differences regarding serum hormonal levels were found at baseline. Luteinizing hormone and FSH levels were significantly higher in those patients treated with EBRT at three months (luteinizing hormone 8.54 vs. 4.76U/l, FSH 22.96 vs. 8.18U/l, p<0.0001) while T and free testosterone levels were significantly lower (T 360.3 vs. 41,483ng/dl, p 0.039; free testosterone 5.94 vs. 7.5pg/ml, p 0.018). At 12 months FSH levels remained significantly higher in patients treated with EBRT compared to patients treated with RP (21.01 vs. 8.51U/l, p<0.001) while T levels remained significantly lower (33,989 vs. 40,239ng/dl, p 0.03).

Conclusions

Prostate cancer treatment influences the hypothalamic pituitary axis. This influence seems to be more important when patients with prostate cancer are treated with EBRT rather than RP.

More studies are needed to elucidate the role that prostate may play as an endocrine organ.

Keywords:
Prostate cancer
Radiotherapy
Radical prostatectomy
Gonadotrophin
Testosterone
Resumen
Objetivos

Determinar la influencia de la prostatectomía radical (PR) y de la radioterapia externa (RT) sobre el eje hipotálamo-hipofisario de 120 pacientes con cáncer de próstata clínicamente localizado tratados con PR o RT exclusiva.

Material y métodos

Estudiamos 120 pacientes con cáncer de próstata localizado. Noventa y dos pacientes recibieron PR y 28 RT exclusiva. Medimos los niveles séricos de hormona luteinizante, hormona folículo estimulante (FSH), testosterona total (T), testosterona libre y estradiol basalmente y a los 3 y 12 meses tras completar el tratamiento.

Resultados

Los pacientes sometidos a PR eran más jóvenes y presentaban mayor volumen prostático (64,3 vs. 71,1 años, p<0,0001 y 55,1 vs. 36,5 g, p<0,0001; respectivamente). No encontramos diferencias en los niveles hormonales basales. Los niveles de hormona luteinizante y FSH eran significativamente superiores en los pacientes tratados con RT a los 3 meses (hormona luteinizante 8,54 vs. 4,76 U/l, FSH 22,96 vs. 8,18 U/l, p<0,0001) y los niveles de T y testosterona libre significativamente inferiores (T 360,3 vs. 414,83ng/dl, p 0,039; FT 5,94 vs. 7,5pg/ml, p 0,018). A los 12 meses los niveles de FSH permanecían significativamente superiores en los pacientes tratados con RT comparado con pacientes tratados con PR (21,01 vs. 8,51 U/l, p<0,001) y los niveles de T permanecían significativamente inferiores (339,89 vs. 402,39ng/dl, p 0,03).

Conclusiones

El tratamiento del cáncer de próstata influye en el eje hipotálamo-hipofisario. La influencia parece más importante en los pacientes tratados con RT.

Necesitamos más estudios que eluciden el papel que la próstata puede jugar como órgano endocrino.

Palabras clave:
Cáncer de próstata
Radioterapia
Prostatectomía radical
Gonadotropina
Testosterona

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