[[[ Introduction: ]]] Streptococcus pneumoniae is one of the most common infectious pathogens in common variable immunodeficiency (CVID). Both innate and adaptive immune response appears to play a role in defense against S. pneumoniae. In mice, it has been established that TLR2 and macrophages-derived cytokines (IL-6, TNF-alpha) play a crucial role in defense against S. pneumoniae. In humans, monocyte/macrophage-derived cytokines in response to S. pneumoniae have not been studied. Patients with CVID respond poorly to Pneumovax-23 (containing all capsular polysaccharides) vaccination. [[[ Findings: ]]] In this study, we show that Pneumovax-23, in a concentration and time-dependent manner, induced secretion of IL-6, IL-10, and TNF-alpha by monocytes and not by B cells or T cells from healthy controls. Furthermore, Pneumovax-23-induced secretion of IL-6 and TNF-alpha was significantly less in patients with CVID as compared with controls. In addition, Pneumovax-23-induced upregulation of TLR2 in all four subsets of monocytes; however, differences between control and CVID were not significant. [[[ Conclusion: ]]] Pneumovax-23-induced monocytes-derived cytokine production is impaired in CVID, which may play an important role in increased susceptibility of CVID patients to S. pneumoniae infection.
Impaired Pneumovax-23-Induced Monocyte-Derived Cytokine Production in Patients with Common Variable Immunodeficiency
일반변형면역결핍증 환자에서 Pneumovax-23에 의해 유도된 단핵구 유래 사이토카인 생성의 손상
[Category] 폐렴구균 감염증,
[Article Type] journal-article
[Source] pubmed
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