Rheumatology International

, Volume 31, Issue 3, pp 365–376

Prevalence of and risk factors for low bone mineral density in Japanese female patients with systemic lupus erythematosus

  • Makio Furukawa
  • Chikako Kiyohara
  • Hiroshi Tsukamoto
  • Hiroki Mitoma
  • Yasutaka Kimoto
  • Ayumi Uchino
  • Misato Nakagawa
  • Kensuke Oryoji
  • Terufumi Shimoda
  • Koichi Akashi
  • Mine Harada
  • Takahiko Horiuchi
Original Article

DOI: 10.1007/s00296-009-1244-5

Cite this article as:
Furukawa, M., Kiyohara, C., Tsukamoto, H. et al. Rheumatol Int (2011) 31: 365. doi:10.1007/s00296-009-1244-5

Abstract

To examine the prevalence of and risk factors for low bone mineral density (BMD) (osteoporosis or osteopenia) in Japanese female patients with systemic lupus erythematosus (SLE). We performed BMD measurements by dual X-ray absorptiometry at the lumbar spine and the hip and collected basic and lifestyle-related, clinical and treatment characteristics among 58 SLE patients. Odds ratios (ORs) and their 95% confidence intervals (CIs) were assessed for associations between low BMD and selected factors among SLE patients. The mean BMD ± SD was 0.90 ± 0.17 g/cm2 at the lumbar spine and 0.76 ± 0.17 g/cm2 at the hip. The prevalence of osteopenia (2.5 SD < T score < 1 SD) was 50.0% and that of osteoporosis (T score < 2.5 SD) was 13.8% in our SLE patients. After adjustment for age and disease duration, we found the number of deliveries (OR = 5.58, 95% CI = 1.31–26.06; P = 0.02) to be a risk factor for overall low BMD (T score < 1 SD) and a maximal dosage of >50 mg/day of oral corticosteroids (OR = 0.25, 95% CI = 0.07–0.91; P = 0.035) as a preventive factor for low BMD at the lumbar spine. Reduced BMD, especially in spinal trabecular bone, was pronounced in Japanese female patients with SLE, particular in those with a history of delivery. A history of high-dose oral corticosteroids was associated with the preservation of BMD at the lumbar spine, however, further study is needed considering the limited sample size.

Keywords

Systemic lupus erythematosusBone mineral densityFemaleLumbar spineDeliveriesCorticosteroids

Copyright information

© Springer-Verlag 2009

Authors and Affiliations

  • Makio Furukawa
    • 1
  • Chikako Kiyohara
    • 2
  • Hiroshi Tsukamoto
    • 1
  • Hiroki Mitoma
    • 1
  • Yasutaka Kimoto
    • 1
  • Ayumi Uchino
    • 1
  • Misato Nakagawa
    • 1
  • Kensuke Oryoji
    • 1
  • Terufumi Shimoda
    • 3
  • Koichi Akashi
    • 1
  • Mine Harada
    • 4
  • Takahiko Horiuchi
    • 1
  1. 1.Department of Medicine and Biosystemic Science, Graduate School of Medical SciencesKyushu UniversityFukuokaJapan
  2. 2.Department of Preventive Medicine, Graduate School of Medical SciencesKyushu UniversityFukuokaJapan
  3. 3.Department of Clinical ResearchFukuoka National HospitalFukuokaJapan
  4. 4.Omuta National HospitalFukuokaJapan