relationship of annual change in bone mineral density with extent of emphysematous lesions and pulmonary function in patients with copd

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ID: 168796
2018
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Abstract
Kenichi Goto,1,2 Emiko Ogawa,1,3 Kaoruko Shimizu,4 Hironi Makita,4 Hidenobu Suzuki,5 Yoshiki Kawata,5 Noboru Niki,5 Masaharu Nishimura,4 Yasutaka Nakano1 1Division of Respiratory Medicine, Department of Medicine, Shiga University of Medical Science, Otsu, Shiga, 2Department of Pulmonary Medicine, Takatsuki Red Cross Hospital, Takatsuki, Osaka, 3Health Administration Center, Shiga University of Medical Science, Otsu, Shiga, 4First Department of Medicine, Hokkaido University Hospital, Sapporo, Hokkaido, 5Institute of Technology and Science, Tokushima University, Tokushima, Tokushima, Japan Background: Osteoporosis is a well-known comorbidity in COPD. It is associated with poor health status and prognosis. Although the exact pathomechanisms are unclear, osteoporosis is suggested to be either a comorbidity due to shared risk factors with COPD or a systematic effect of COPD with a cause–effect relationship. This study aimed to evaluate whether progression of osteoporosis is synchronized with that of COPD. Materials and methods: Data from 103 patients with COPD included in the Hokkaido COPD cohort study were analyzed. Computed tomography (CT) attenuation values of thoracic vertebrae 4, 7, and 10 were measured using custom software, and the average value (average bone density; ABD4,7,10) was calculated. The percentage of low attenuation volume (LAV%) for each patient was also calculated for evaluation of emphysematous lesions. Annual change in thoracic vertebral CT attenuation, which is strongly correlated with dual-energy X-ray absorptiometry-measured bone mineral density, was compared with that in FEV1.0 or emphysematous lesions. Results: In the first CT data set, ABD4,7,10 was significantly correlated with age (ρ=–0.331; p=0.0006), body mass index (BMI; ρ=0.246; p=0.0136), St George’s Respiratory Questionnaire (SGRQ) activity score (ρ=–0.248; p=0.0115), eosinophil count (ρ=0.229; p=0.0198), and LAV% (ρ=–0.372; p=0.0001). However, ABD4,7,10 was not associated with FEV1.0. After adjustment for age, BMI, SGRQ activity score, and eosinophil count, no significant relationship was found between ABD4,7,10 and LAV%. Annual change in ABD4,7,10 was not associated with annual change in LAV% or FEV1.0. Conclusion: Progression of osteoporosis and that of COPD are not directly related or synchronized with each other. Keywords: osteoporosis, quantitative CT analysis, FEV1.0, low attenuation volume, automatic analysis, systemic effect
Reference Key
k2018internationalrelationship Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Goto K;Ogawa E;Shimizu K;Makita H;Suzuki H;Kawata Y;Niki N;Nishimura M;Nakano Y
Journal tijdschrift voor geneeskunde
Year 2018
DOI
DOI not found
URL
https://www.dovepress.com/relationship-of-annual-change-in-bone-mineral-density-with-extent-of-e-peer-reviewed-article-COPD
Keywords
osteoporosis

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