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Journal of Bone and Mineral Metabolism

, Volume 37, Issue 1, pp 72–80 | Cite as

Decrease of bone mineral density in Japanese patients with non-metastatic prostate cancer treated with androgen deprivation therapy

  • Seiichi KatoEmail author
  • Makoto Kawase
  • Daiki Kato
  • Takashi Ishida
  • Masahiro Uno
  • Yoshinori Fujimoto
  • Takako Masue
  • Naruyasu Masue
  • Takashi Deguchi
Original Article
  • 175 Downloads

Abstract

The aim of this study was to conduct a cross-sectional survey of investigations related to the bone mineral density (BMD) of both non-metastatic prostate cancer (NMPC) patients who have not yet received androgen deprivation therapy (ADT) and patients receiving prolonged ADT in Japan. Japanese male patients with NMPC who received continuous ADT or who were planning to receive ADT were enrolled in this study. Lumbar spine and femoral neck BMD was measured using dual-energy X-ray absorptiometry (DEXA). To assess patient characteristics, we searched medical records and questionnaires to determine whether they had any factors that could possibly affect BMD. A total of 230 patients with a mean age of 76.6 ± 6.4 years were evaluated. Of these, 151 (65.7%) were receiving ADT, and 79 (34.4%) had not yet received ADT. The mean duration of ADT was 37.4 ± 30.7 months. DEXA showed that as the duration of ADT increased, lumbar spine and femoral neck BMD decreased gradually (p = 0.0005 and p = 0.0014, respectively). Stepwise regression analyses revealed that the duration of ADT was a significant variable of both lumbar spine and femoral neck BMD. Moreover, as the duration of ADT increased, the prevalence of osteoporosis increased statistically (p = 0.0002). This study showed that ADT negatively affected lumbar spine and femoral neck BMD. It also showed a progressive increase in the prevalence of osteoporosis in Japanese NMPC patients with ADT.

Keywords

Asian Continental Ancestry Group Bone density Gonadotropin-releasing hormone Osteoporosis Prostatic neoplasms 

Notes

Acknowledgements

We thank the patients of Ogaki Municipal Hospital (Ogaki, Japan).

Compliance with ethical standards

Conflict of interest

All authors have no conflicts of interest.

Ethical approval

All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. For this type of study formal consent is not required.

Informed consent

Informed consent was obtained from all individual participants included in the study.

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Copyright information

© The Japanese Society for Bone and Mineral Research and Springer Japan KK, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of UrologyOgaki Municipal HospitalOgakiJapan
  2. 2.Masue ClinicGifuJapan
  3. 3.Department of UrologyGifu University School of MedicineGifuJapan

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