Elsevier

Joint Bone Spine

Volume 77, Issue 3, May 2010, Pages 246-251
Joint Bone Spine

Original article
Infections induced by low-dose corticosteroids in rheumatoid arthritis: A systematic literature review

https://doi.org/10.1016/j.jbspin.2010.02.009Get rights and content

Abstract

Objective

To study the association between infection risk and low-dose corticosteroids (LD-CT, defined as a daily dose < 10 mg/day of prednisone) in rheumatoid arthritis (RA).

Methods

Data source: a systematic review of the literature up to June 2009 was performed. Data extraction :all type of infections: bacterial, viral and postoperative; infection severity, RA activity, RA severity, comorbid conditions. Data analysis: descriptive, comparing infection risk between LD-CT-treated and LD-CT-not treated RA.

Results

Of the 1310 screened reports, the literature analysis identified 15 assessing infection risk of LD-CT in RA patients. Of the eight reports that studied all types of infection, six articles found no association between risk of infection and LD-CT, one showed an association between severe infections and LD-CT (OR = 8 [1–64]) and another showed a dose-dependent association including doses of less than 5 mg/day: RR = 1.32 [1.06–1.63] and doses between 6 to 10 mg/day: RR = 1.95 [1.53–2.46]. Of the three trials that studied infection risk secondary to bacteria, one showed an increased risk (HR = 1.7 [1.5–2.0]) while two did not (respectively, exposure to < 5 mg/day: OR = 1.34 [0.85–2.13]; 6 to 9 mg/day: OR = 1.53 [0.95–2.48] and < 5 mg/day: OR = 1.49 [0.82–2.72]; 5 to 10 mg/day: OR = 1.46 [0.84–2.54]). None of the three trials studying postoperative infection risk found any association between infection risk and LD-CT treatment. Two reports studied herpes zoster risk and found no association with LD-CT.

Conclusion

There was a paucity of data about LD-CT and infection risk in RA and that risk seems poorly increased. These findings need to be confirmed by further studies.

Section snippets

Literature search

A systematic literature search was performed using databases of Medline, Embase and Cochrane Library. The keywords used for the Medline search were: (“Arthritis, Rheumatoid/complications” [Mesh:NoExp] OR “Arthritis, Rheumatoid/drug therapy” [Mesh:NoExp]) AND (“Bacterial Infections and Mycoses”[Mesh] OR “Virus Diseases”[Mesh] OR “Parasitic Diseases”[Mesh]) NOT “Case Reports”[ptyp]. The search was limited to English, French, Spanish and German languages, humans and adults above 19 years old with

Results

The literature search on electronic databases identified 1408 titles (Fig. 1). After reading titles and abstracts, 98 articles were selected as described previously and read. Finally, 15 full-length articles were included in the analysis and one abstract from international congresses was added.

Discussion

The systematic literature search pointed out that only few data about risk of infection induced by LD-CT have been identified and showed a poor increase of that risk. Although risk of infections is likely to be increased with moderate or high doses, most studies that explored the risk associated with LD-CT failed to demonstrate this. When analysing specific bacterial infections, pneumonia was associated with LD-CT in one study [26], but this result was not confirmed by two other studies [24],

Conflict of interest statement

The authors received a grant support from Abbott.

Acknowledgments

The authors thank Abbott for an institutional support for this study, Philippe Gaudin, Daniel Wendling, Alain Cantagrel, Pascal Claudepierre, Jean-Francis Maillefert, Thierry Schaeverbeke and Jacques Tebib for their help in elaborating the study and interpretation of the data.

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