Σφακιανάκης Αλέξανδρος
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Παρασκευή 24 Αυγούστου 2018

Recombinant chemotaxis inhibitory protein of Staphylococcus aureus (CHIPS) protects against LPS-induced lung injury in mice

Publication date: Available online 23 August 2018

Source: Clinical Immunology

Author(s): Youssif M. Ali, Abeer M. Abd El-Aziz, Maha Mabrook, Ahmed A. Shabaan, Robert B. Sim, Ramadan Hassan

Abstract

Acute lung injury (ALI) and/or acute respiratory distress syndrome (ARDS) are clinical conditions caused by trauma, lung infection or sepsis. ALI/ARDS is associated with massive recruitment of neutrophils into the lung with release of reactive oxygen species and excessive inflammatory response that damage alveolar tissue. Here we report the successful use of a potent chemotaxis inhibitory protein (rCHIPS) derived from Staphylococcus aureus in reducing the severity of ALI/ARDS. Treatment with rCHIPS reduces pulmonary inflammation and permeability in mice after intranasal administration of lipopolysaccharide (LPS). rCHIPS treatment significantly reduces lung myeloperoxidase (MPO) activity, pro-inflammatory cytokines, broncho-alveolar lavage fluid (BALF) protein content as well as histopathological changes. In addition, treatment with rCHIPS significantly diminishes neutrophils and leukocytes recruitment into lung tissue after LPS administration and hence protects mice from reactive oxygen species mediated lung injury. Our finding reveals potential therapeutic benefits of using rCHIPS for the treatment of ALI/ARDS.



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