CD5L contributes to the pathogenesis of methicillin-resistant Staphylococcus aureus-induced pneumonia.

Abstract:

:Staphylococcus aureus is a major causative microorganism in community- and healthcare-acquired pneumonia. CD5L is an important protein in the control of immune homeostasis. In this study, we found that patients with S. aureus pneumonia displayed increased levels of circulating CD5L. Likewise, mice with S. aureus pneumonia had elevated CD5L levels in the lungs. Anti-CD5L antibody protected mice from lethal pneumonia induced by methicillin-resistant S. aureus. The survival benefit obtained with antibody against CD5L was associated with an improvement of bacterial clearance and a reduction of pulmonary inflammatory cytokines and chemokines. Conversely, co-injection of recombinant CD5L and S. aureus markedly increased the lethality of S. aureus pneumonia. These findings suggest that CD5L contributed to the immunopathology of S. aureus pneumonia.

journal_name

Int Immunopharmacol

authors

Gao X,Yan X,Zhang Q,Yin Y,Cao J

doi

10.1016/j.intimp.2019.03.057

subject

Has Abstract

pub_date

2019-07-01 00:00:00

pages

40-47

eissn

1567-5769

issn

1878-1705

pii

S1567-5769(19)30049-9

journal_volume

72

pub_type

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