Louise Jeanette Pauline Persson 1*, Marianne Aanerud 1, Pieter Sicco Hiemstra 3, Jon Andrew Hardie 1,2, Per Sigvald Bakke 2, Tomas Mikal Lind Eagan 1,2
1 Department of Thoracic Medicine, Haukeland University Hospital, Bergen, Norway,
2 Institute of Medicine, University of Bergen, Bergen, Norway,
3 Department of Pulmonology, Leiden University Medical Center, Leiden, The Netherlands
* E-mail: louise.persson at med.uib.no
Received: February 18, 2012; Accepted: May 14, 2012; Published: June 21, 2012
Introduction: COPD patients may be at increased risk for vitamin D (25(OH)D) deficiency, but risk factors for deficiency among COPD patients have not been extensively reported.
Methods: Serum 25(OH)D levels were measured by liquid chromatography double mass spectrometry in subjects aged 40–76 years from Western Norway, including 433 COPD patients (GOLD stage II-IV) and 325 controls. Levels <20 ng/mL defined deficiency. Season, sex, age, body mass index (BMI), smoking, GOLD stage, exacerbation frequency, arterial oxygen tension (PaO2), respiratory symptoms, depression (CES-D score?16), comorbidities (Charlson score), treatment for osteoporosis, use of inhaled steroids, and total white blood count were examined for associations with 25(OH)D in both linear and logistic regression models.
Results: COPD patients had an increased risk for vitamin D deficiency compared to controls after adjustment for seasonality, age, smoking and BMI.
Variables associated with lower 25(OH)D levels in COPD patients were
- obesity ( = ?6.63),
- current smoking ( = ?4.02),
- GOLD stage III- IV ( = ?4.71, = ?5.64), and
- depression ( = ?3.29).
Summertime decreased the risk of vitamin D deficiency (OR = 0.22).
Conclusion: COPD was associated with an increased risk of vitamin D deficiency, and important disease characteristics were significantly related to 25(OH)D levels.
Copyright: © 2012 Persson et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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J Clin Periodontol. 2012 Apr;39(4):350-6. doi: 10.1111/j.1600-051X.2012.01852.x. Epub 2012 Feb 1.
Zhou X, Han J, Song Y, Zhang J, Wang Z.
Department of Stomatology, Beijing ChaoYang Hospital affiliated to Capital Medical University, Beijing, China.
AIM: To evaluate the associations of serum 25-Hydroxyvitamin D [25(OH)D] levels with periodontal health and chronic obstructive pulmonary disease (COPD).
MATERIAL AND METHODS: We conducted a case-control study of 193 COPD patients and 181 controls.
Their periodontal status and lung function were examined, and serum 25(OH)D levels were measured.
RESULTS: Mean serum 25(OH)D concentrations were significantly lower in the COPD group than in the controls (32.1 versus 35.8 nmol/l; p = 0.002).
Serum 25(OH)D concentrations were positively correlated with lung function among non-smokers and negatively correlated with plaque index (PLI) among former smokers. After adjustment for age, gender, body mass index, season and smoking status, periodontal indexes were significantly associated with serum 25(OH)D concentrations (number of remaining teeth among all groups; probing depth, clinical attachment level, bleeding index, PLI and alveolar bone loss among COPD group).
Lower serum 25(OH)D concentrations were significantly associated with an increased risk of COPD among former smokers (Odd ratio 4.11; 95% confidence interval 1.47-11.5; p = 0.007) after adjustment for periodontal indexes and other variables.
CONCLUSIONS: Lower serum 25(OH)D concentrations were significantly associated with poor periodontal health and an increased risk of COPD.
© 2012 John Wiley & Sons A/S. PMID: 22296704
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