Osteoporosis International

, Volume 24, Issue 8, pp 2223–2230

Serum osteocalcin levels are inversely associated with abdominal aortic calcification in men with type 2 diabetes mellitus

  • N. Ogawa-Furuya
  • T. Yamaguchi
  • M. Yamamoto
  • I. Kanazawa
  • T. Sugimoto
Original Article

DOI: 10.1007/s00198-013-2289-6

Cite this article as:
Ogawa-Furuya, N., Yamaguchi, T., Yamamoto, M. et al. Osteoporos Int (2013) 24: 2223. doi:10.1007/s00198-013-2289-6

Abstract

Summary

We found that serum osteocalcin (OC) and undercarboxylated OC (ucOC) levels were negatively associated with abdominal aortic calcification in type 2 diabetes mellitus (T2DM) men. This finding suggests that circulating OC and ucOC are not only related to glucose or fat metabolism but also to arteriosclerosis.

Introduction

Recent studies revealed that serum osteocalcin levels were associated with not only bone metabolism but also glucose and fat metabolism. However, the relationship between serum OC levels and arteriosclerosis remains controversial. We examined whether or not bone metabolic markers including OC are associated with abdominal aortic calcification in patients with type 2 diabetes mellitus.

Methods

We recruited 118 men and 100 postmenopausal women with T2DM. We evaluated the abdominal aortic calcification score (ACS) on a lateral lumbar radiograph and examined the association between serum OC or undercarboxylated OC levels and ACS.

Results

The ACS of 3 and greater, which corresponded well to the highest quartile, was significantly and negatively associated with serum OC and ucOC levels in men by logistic regression analyses after adjusting for age, BMI, serum levels of creatinine and LDL cholesterol, radial bone mineral density, smoking, duration of DM, hemoglobin A1c, and the index of insulin resistance [odds ratio (OR) 0.36, 95 % confidence interval (CI) 0.19–0.70, P < 0.005, and OR 0.28, 95 % CI 0.12–0.69, P < 0.01, per standard deviation increase in OC and ucOC, respectively]. These observations were still significant after an additional adjustment for other bone markers. In contrast, there were no significant relationships with serum OC or ucOC levels and ACS in women.

Conclusions

These findings suggest that serum OC and ucOC levels are associated with not only bone metabolism but also arteriosclerosis in men, but not in women with type 2 diabetes mellitus.

Keywords

Abdominal aortic calcificationArteriosclerosisDiabetes mellitusOsteocalcinUndercarboxylated osteocalcin

Copyright information

© International Osteoporosis Foundation and National Osteoporosis Foundation 2013

Authors and Affiliations

  • N. Ogawa-Furuya
    • 1
  • T. Yamaguchi
    • 1
  • M. Yamamoto
    • 1
  • I. Kanazawa
    • 1
  • T. Sugimoto
    • 1
  1. 1.Department of Internal Medicine 1Shimane University Faculty of MedicineIzumoJapan