Effect Of Risedronate On Bone Mass In Older Men Receiving Neoadjuvant Therapy For Prostate Cancer

Men treated with neoadjuvant luteinizing hormone-releasing hormone (LHRH)-agonists such as leuprolide and goserelin for prostate cancer will become hypogonadal due to hormonal suppression and demonstrate increased bone turnover and consequent bone loss at the hip and spine. This bone loss can be prevented by treatment with 35 mg/week of risedronate.

A 6-month randomized, double-blind, placebo-controlled trial was conducted, including 40 men aged ≥ 55 years receiving LHRH-agonist treatment for 6 months for locally advanced prostate cancer. Bone mineral density (BMD) of the lumbar spine, femoral neck, and total hip was measured every 6 months. In addition, bone turnover markers including N-telopeptide, serum C-telopeptide and procollagen peptide, and 25-OH vitamin D and intact parathyroid hormone were measured at baseline and at 6 months.

BMD was measured by dual-energy X-ray absorptiometry (Lunar DXA-IQ, Madison, WI, USA). The BMD of the femoral neck, total hip, and lumbar spine (L1-L4) was measured. Underlying data are no longer available; reported means have been estimated from the results publication.

Bone turnover markers including N-telopeptide (NTX), serum C-telopeptide (CTX) and procollagen peptide (P1NP), and 25-OH vitamin D and intact parathyroid hormone (PTH) were measured at baseline and at 6 months. Reported means have been estimated from the results publication as the underlying data are no longer available. Data for Vitamin D and PTH were not included in the publication.

Inclusion Criteria: Non-metastatic prostate cancer Men to receive Gonadotropin-releasing Hormone-agonist therapy Exclusion Criteria: Other cancers except skin cancer Evidence of metabolic bone disease Prior use of bisphosphonates