Association of DPP-4 activity with BMD, body composition, and incident hip fracture: the Cardiovascular Health Study

L. D. Carbone, P. Bůžková, H. A. Fink, John A Robbins, M. Bethel, C. M. Isales, W. D. Hill

Research output: Contribution to journalArticle

9 Scopus citations

Abstract

Summary: There was no association of plasma DPP-4 activity levels with bone mineral density (BMD), body composition, or incident hip fractures in a cohort of elderly community-dwelling adults. Introduction: Dipeptidyl peptidase IV (DPP-4) inactivates several key hormones including those that stimulate postprandial insulin secretion, and DPP-4 inhibitors (gliptins) are approved to treat diabetes. While DPP-4 is known to modulate osteogenesis, the relationship between DPP-4 activity and skeletal health is uncertain. The purpose of the present study was to examine possible associations between DPP-4 activity in elderly subjects enrolled in the Cardiovascular Health Study (CHS) and BMD, body composition measurements, and incident hip fractures. Methods: All 1536 male and female CHS participants who had evaluable DXA scans and plasma for DPP-4 activity were included in the analyses. The association between (1) BMD of the total hip, femoral neck, lumbar spine, and total body; (2) body composition measurements (% lean, % fat, and total body mass); and (3) incident hip fractures and plasma levels of DPP-4 activity were determined. Results: Mean plasma levels of DPP-4 activity were significantly higher in blacks (227 ± 78) compared with whites (216 ± 89) (p = 0.04). However, there was no significant association of DPP-4 activity with age or gender (p ≥ 0.14 for both). In multivariable adjusted models, there was no association of plasma DPP-4 activity with BMD overall (p ≥ 0.55 for all) or in gender stratified analyses (p ≥ 0.23). There was also no association of DPP-4 levels and incident hip fractures overall (p ≥ 0.24) or in gender stratified analyses (p ≥ 0.39). Conclusion: Plasma DPP-4 activity, within the endogenous physiological range, was significantly associated with race, but not with BMD, body composition, or incident hip fractures in elderly community-dwelling subjects.

Original languageEnglish (US)
Pages (from-to)1631-1640
Number of pages10
JournalOsteoporosis International
Volume28
Issue number5
DOIs
StatePublished - May 1 2017

Keywords

  • Body composition
  • Bone mineral density
  • Dipeptidyl peptidase IV
  • DPP-4
  • Epidemiology
  • Fracture

ASJC Scopus subject areas

  • Endocrinology, Diabetes and Metabolism

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