SUMMARY: In a 6-year cohort study of 751 community-dwelling elderly Japanese women, we found that C-reactive protein (CRP) is a significant predictor of osteoporotic fracture in elderly Asian women, who have significantly lower CRP levels than Caucasians. Mechanisms explaining such an association should be further studied. INTRODUCTION: While CRP, a systemic inflammation marker, is thought to be associated with osteoporosis, evidence supporting this claim has been limited. We aimed to assess the association between CRP levels and incident osteoporotic fracture in elderly women. METHODS: We conducted a cohort study with a follow-up period of 6 years. The study included 751 Japanese women aged 69 years or older. We measured serum high-sensitivity CRP (hs-CRP) levels as a major predictor. Covariates included age, body mass index, forearm bone mineral density, calcium intake, serum 25-hydroxyvitamin D, postural sway, osteoporosis medication, and physical activity. The primary outcome was incident limb and vertebral fractures. The Cox proportional hazards model was used to calculate the hazard ratio (HR) of fracture. RESULTS: Median hs-CRP values in study participants were 0.16 mg/L in the lowest tertile, 0.36 mg/L in the medium tertile, and 1.14 mg/L in the highest tertile. The hs-CRP values in these women were substantially lower than in their Caucasian counterparts. Limb or vertebral fractures occurred in 50 subjects during 4,250 person-years. Low CRP levels were associated with low incidence of limb or vertebral fractures (P for trend = 0.035). The adjusted HRs of fracture for the medium and highest quartiles of hs-CRP levels, compared to the lowest quartile, were 2.22 (95% CI, 1.02-4.84) and 2.40 (95% CI, 1.10-5.24), respectively. CONCLUSIONS: CRP is a significant predictor of osteoporotic fracture in elderly Asian women who have substantially lower CRP levels than Caucasians. Mechanisms explaining such an association should be further studied.
SUMMARY: In a 6-year cohort study of 751 community-dwelling elderly Japanese women, we found that C-reactive protein (CRP) is a significant predictor of osteoporotic fracture in elderly Asian women, who have significantly lower CRP levels than Caucasians. Mechanisms explaining such an association should be further studied. INTRODUCTION: While CRP, a systemic inflammation marker, is thought to be associated with osteoporosis, evidence supporting this claim has been limited. We aimed to assess the association between CRP levels and incident osteoporotic fracture in elderly women. METHODS: We conducted a cohort study with a follow-up period of 6 years. The study included 751 Japanese women aged 69 years or older. We measured serum high-sensitivity CRP (hs-CRP) levels as a major predictor. Covariates included age, body mass index, forearm bone mineral density, calcium intake, serum 25-hydroxyvitamin D, postural sway, osteoporosis medication, and physical activity. The primary outcome was incident limb and vertebral fractures. The Cox proportional hazards model was used to calculate the hazard ratio (HR) of fracture. RESULTS: Median hs-CRP values in study participants were 0.16 mg/L in the lowest tertile, 0.36 mg/L in the medium tertile, and 1.14 mg/L in the highest tertile. The hs-CRP values in these women were substantially lower than in their Caucasian counterparts. Limb or vertebral fractures occurred in 50 subjects during 4,250 person-years. Low CRP levels were associated with low incidence of limb or vertebral fractures (P for trend = 0.035). The adjusted HRs of fracture for the medium and highest quartiles of hs-CRP levels, compared to the lowest quartile, were 2.22 (95% CI, 1.02-4.84) and 2.40 (95% CI, 1.10-5.24), respectively. CONCLUSIONS:CRP is a significant predictor of osteoporotic fracture in elderly Asian women who have substantially lower CRP levels than Caucasians. Mechanisms explaining such an association should be further studied.
Authors: Julie A Pasco; Mark A Kotowicz; Margaret J Henry; Geoffrey C Nicholson; Heather J Spilsbury; Jeffrey D Box; Hans G Schneider Journal: JAMA Date: 2006-09-20 Impact factor: 56.272
Authors: K Nakamura; T Saito; T Nishiwaki; K Ueno; M Nashimoto; Y Okuda; Y Tsuchiya; R Oshiki; K Muto; M Yamamoto Journal: Osteoporos Int Date: 2006-05-13 Impact factor: 4.507
Authors: Georg Schett; Stefan Kiechl; Siegfried Weger; Angelo Pederiva; Agnes Mayr; Manuele Petrangeli; Friedrich Oberhollenzer; Rolando Lorenzini; Kurt Redlich; Roland Axmann; Jochen Zwerina; Johann Willeit Journal: Arch Intern Med Date: 2006 Dec 11-25
Authors: John Danesh; Jeremy G Wheeler; Gideon M Hirschfield; Shinichi Eda; Gudny Eiriksdottir; Ann Rumley; Gordon D O Lowe; Mark B Pepys; Vilmundur Gudnason Journal: N Engl J Med Date: 2004-04-01 Impact factor: 91.245
Authors: Brenda W J H Penninx; Stephen B Kritchevsky; Anne B Newman; Barbara J Nicklas; Eleanor M Simonsick; Susan Rubin; Michael Nevitt; Marjolein Visser; Tamara Harris; Marco Pahor Journal: J Am Geriatr Soc Date: 2004-07 Impact factor: 5.562
Authors: Jane A Cauley; Michelle E Danielson; Robert M Boudreau; Kimberly Yz Forrest; Joseph M Zmuda; Marco Pahor; Frances A Tylavsky; Steven R Cummings; Tamara B Harris; Anne B Newman Journal: J Bone Miner Res Date: 2007-07 Impact factor: 6.741
Authors: Sinead N Duggan; Christina Purcell; Mark Kilbane; Myra O'Keane; Malachi McKenna; Peter Gaffney; Paul F Ridgway; Gerard Boran; Kevin C Conlon Journal: Am J Gastroenterol Date: 2015-01-27 Impact factor: 10.864
Authors: Jessica M Peña; Sara Aspberg; Jean MacFadyen; Robert J Glynn; Daniel H Solomon; Paul M Ridker Journal: JAMA Intern Med Date: 2015-02 Impact factor: 21.873
Authors: Michael A Clynes; Nicholas C Harvey; Elizabeth M Curtis; Nicholas R Fuggle; Elaine M Dennison; Cyrus Cooper Journal: Br Med Bull Date: 2020-05-15 Impact factor: 4.291
Authors: Shilpa N Bhupathiraju; Alice H Lichtenstein; Bess Dawson-Hughes; Marian T Hannan; Katherine L Tucker Journal: Am J Clin Nutr Date: 2013-09-18 Impact factor: 7.045
Authors: Shinya Ishii; Jane A Cauley; Gail A Greendale; Carolyn J Crandall; Michelle E Danielson; Yasuyoshi Ouchi; Arun S Karlamangla Journal: J Bone Miner Res Date: 2013-07 Impact factor: 6.741