Osteoporosis is a novel risk factor of infections and sepsis: A cohort study

Summary: Background: Accumulating evidence suggests the interaction of bone metabolism and the immune system, but how bone health is associated with the risk of infections remains unknown. Methods: This study aimed to investigate the relationship of bone mineral density (BMD) with the risk of commo...

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Main Authors: Xiaowen Zhang, Kwong-Wai Man, Gloria Hoi-Yee Li, Kathryn CB Tan, Annie Wai-Chee Kung, Ching-Lung Cheung
Format: Article
Language:English
Published: Elsevier 2022-07-01
Series:EClinicalMedicine
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S2589537022002188
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author Xiaowen Zhang
Kwong-Wai Man
Gloria Hoi-Yee Li
Kathryn CB Tan
Annie Wai-Chee Kung
Ching-Lung Cheung
author_facet Xiaowen Zhang
Kwong-Wai Man
Gloria Hoi-Yee Li
Kathryn CB Tan
Annie Wai-Chee Kung
Ching-Lung Cheung
author_sort Xiaowen Zhang
collection DOAJ
description Summary: Background: Accumulating evidence suggests the interaction of bone metabolism and the immune system, but how bone health is associated with the risk of infections remains unknown. Methods: This study aimed to investigate the relationship of bone mineral density (BMD) with the risk of common infections and sepsis in Hong Kong Osteoporosis Study (HKOS). A prospective cohort study, initiated in 1995 and followed until 31 December 2020, of 5,717 participants examined the association of BMD at three skeletal sites (lumbar spine, femoral neck, and total hip) with common infections - pneumonia, urinary tract infection (UTI), skin infection, and sepsis. Cox proportional hazards models were used to estimate hazard ratios (HR) and 95% confidence intervals (CI). Findings: During the median follow-up of 17 years, higher BMD T-scores at the femoral neck and total hip were significantly associated with the reduced risk of pneumonia (HRs 0.89 and 0.87; 95% CIs 0.82 to 0.98 and 0.81 to 0.95), UTI (HRs 0.85 and 0.86; 95% CIs 0.76 to 0.94 and 0.78 to 0.95), skin infection (HRs 0.85 and 0.82; 95% CIs 0.74 to 0.97 and 0.73 to 0.93), and sepsis (HRs 0.83 and 0.82; 95% CIs 0.71 to 0.97 and 0.72 to 0.94). A significant association was observed for the lumbar spine BMD T-score with the risk of skin infection (HR 0.86; 95% CI: 0.78 to 0.95) but not with other infections and sepsis. Similarly, participants with osteoporosis, but not osteopenia, were significantly associated with an increased risk of infections and sepsis compared to those with normal BMD. Interpretation: BMD is a novel risk factor of infections and sepsis. People with low BMD, particularly those with osteoporosis, are at higher risk of infections and sepsis than those with normal BMD. Further studies on whether improving bone health can reduce the risk of infections and sepsis are warranted. Funding: None.
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spelling doaj.art-15b0a9f6b15c48df9a07035996097c432022-12-22T02:28:34ZengElsevierEClinicalMedicine2589-53702022-07-0149101488Osteoporosis is a novel risk factor of infections and sepsis: A cohort studyXiaowen Zhang0Kwong-Wai Man1Gloria Hoi-Yee Li2Kathryn CB Tan3Annie Wai-Chee Kung4Ching-Lung Cheung5Department of Pharmacology and Pharmacy, LKS Faculty of Medicine, The University of Hong KongDepartment of Pharmacology and Pharmacy, LKS Faculty of Medicine, The University of Hong KongDepartment of Health Technology and Informatics, Faculty of Health and Social Sciences, The Hong Kong Polytechnic UniversityDepartment of Medicine, Queen Mary Hospital, LKS Faculty of Medicine, The University of Hong KongDepartment of Medicine, Queen Mary Hospital, LKS Faculty of Medicine, The University of Hong KongDepartment of Pharmacology and Pharmacy, LKS Faculty of Medicine, The University of Hong Kong; Corresponding Author, Ching-Lung Cheung, PhD, Department of Pharmacology and Pharmacy, LKS Faculty of Medicine, The University of Hong Kong, 21 Sassoon Road, Pokfulam, Hong Kong, Tel: +852-3917-9462 Fax: +852-2816-2095.Summary: Background: Accumulating evidence suggests the interaction of bone metabolism and the immune system, but how bone health is associated with the risk of infections remains unknown. Methods: This study aimed to investigate the relationship of bone mineral density (BMD) with the risk of common infections and sepsis in Hong Kong Osteoporosis Study (HKOS). A prospective cohort study, initiated in 1995 and followed until 31 December 2020, of 5,717 participants examined the association of BMD at three skeletal sites (lumbar spine, femoral neck, and total hip) with common infections - pneumonia, urinary tract infection (UTI), skin infection, and sepsis. Cox proportional hazards models were used to estimate hazard ratios (HR) and 95% confidence intervals (CI). Findings: During the median follow-up of 17 years, higher BMD T-scores at the femoral neck and total hip were significantly associated with the reduced risk of pneumonia (HRs 0.89 and 0.87; 95% CIs 0.82 to 0.98 and 0.81 to 0.95), UTI (HRs 0.85 and 0.86; 95% CIs 0.76 to 0.94 and 0.78 to 0.95), skin infection (HRs 0.85 and 0.82; 95% CIs 0.74 to 0.97 and 0.73 to 0.93), and sepsis (HRs 0.83 and 0.82; 95% CIs 0.71 to 0.97 and 0.72 to 0.94). A significant association was observed for the lumbar spine BMD T-score with the risk of skin infection (HR 0.86; 95% CI: 0.78 to 0.95) but not with other infections and sepsis. Similarly, participants with osteoporosis, but not osteopenia, were significantly associated with an increased risk of infections and sepsis compared to those with normal BMD. Interpretation: BMD is a novel risk factor of infections and sepsis. People with low BMD, particularly those with osteoporosis, are at higher risk of infections and sepsis than those with normal BMD. Further studies on whether improving bone health can reduce the risk of infections and sepsis are warranted. Funding: None.http://www.sciencedirect.com/science/article/pii/S2589537022002188OsteoporosisSepsisInfectionsImmunologyOsteoimmunology
spellingShingle Xiaowen Zhang
Kwong-Wai Man
Gloria Hoi-Yee Li
Kathryn CB Tan
Annie Wai-Chee Kung
Ching-Lung Cheung
Osteoporosis is a novel risk factor of infections and sepsis: A cohort study
EClinicalMedicine
Osteoporosis
Sepsis
Infections
Immunology
Osteoimmunology
title Osteoporosis is a novel risk factor of infections and sepsis: A cohort study
title_full Osteoporosis is a novel risk factor of infections and sepsis: A cohort study
title_fullStr Osteoporosis is a novel risk factor of infections and sepsis: A cohort study
title_full_unstemmed Osteoporosis is a novel risk factor of infections and sepsis: A cohort study
title_short Osteoporosis is a novel risk factor of infections and sepsis: A cohort study
title_sort osteoporosis is a novel risk factor of infections and sepsis a cohort study
topic Osteoporosis
Sepsis
Infections
Immunology
Osteoimmunology
url http://www.sciencedirect.com/science/article/pii/S2589537022002188
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AT kwongwaiman osteoporosisisanovelriskfactorofinfectionsandsepsisacohortstudy
AT gloriahoiyeeli osteoporosisisanovelriskfactorofinfectionsandsepsisacohortstudy
AT kathryncbtan osteoporosisisanovelriskfactorofinfectionsandsepsisacohortstudy
AT anniewaicheekung osteoporosisisanovelriskfactorofinfectionsandsepsisacohortstudy
AT chinglungcheung osteoporosisisanovelriskfactorofinfectionsandsepsisacohortstudy