{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,18]],"date-time":"2026-08-18T01:32:46Z","timestamp":1787016766918,"version":"build-2736575974"},"reference-count":42,"publisher":"American Society for Microbiology","issue":"6","license":[{"start":{"date-parts":[[2014,6,1]],"date-time":"2014-06-01T00:00:00Z","timestamp":1401580800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.asm.org\/non-commercial-tdm-license"}],"content-domain":{"domain":["journals.asm.org"],"crossmark-restriction":true},"short-container-title":["Infect Immun"],"published-print":{"date-parts":[[2014,6]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    <jats:named-content content-type=\"genus-species\">Streptococcus pneumoniae<\/jats:named-content>\n                    is a Gram-positive and human-restricted pathogen colonizing the nasopharynx with an absence of clinical symptoms as well as a major pathogen causing otitis media (OM), one of the most common childhood infections. Upon bacterial infection, neutrophils are rapidly activated and recruited to the infected site, acting as the frontline defender against emerging microbial pathogens via different ways. Evidence shows that interleukin 17A (IL-17A), a neutrophil-inducing factor, plays important roles in the immune responses in several diseases. However, its function in response to\n                    <jats:named-content content-type=\"genus-species\">S. pneumoniae<\/jats:named-content>\n                    OM remains unclear. In this study, the function of IL-17A in response to\n                    <jats:named-content content-type=\"genus-species\">S. pneumoniae<\/jats:named-content>\n                    OM was examined using an\n                    <jats:italic>in vivo<\/jats:italic>\n                    model. We developed a model of acute OM (AOM) in C57BL\/6 mice and found that neutrophils were the dominant immune cells that infiltrated to the middle ear cavity (MEC) and contributed to bacterial clearance. Using IL-17A knockout (KO) mice, we found that IL-17A boosted neutrophil recruitment to the MEC and afterwards induced apoptosis, which was identified to be conducive to bacterial clearance. In addition, our observation suggested that the p38 mitogen-activated protein kinase (MAPK) signaling pathway was involved in the recruitment and apoptosis of neutrophils mediated by IL-17A. These data support the conclusion that IL-17A contributes to the host immune response against\n                    <jats:named-content content-type=\"genus-species\">S. pneumoniae<\/jats:named-content>\n                    by promoting neutrophil recruitment and apoptosis through the p38 MAPK signaling pathway.\n                  <\/jats:p>","DOI":"10.1128\/iai.00006-14","type":"journal-article","created":{"date-parts":[[2014,3,25]],"date-time":"2014-03-25T01:28:39Z","timestamp":1395710919000},"page":"2368-2377","update-policy":"https:\/\/doi.org\/10.1128\/asmj-crossmark-policy-page","source":"Crossref","is-referenced-by-count":39,"title":["Interleukin 17A Promotes Pneumococcal Clearance by Recruiting Neutrophils and Inducing Apoptosis through a p38 Mitogen-Activated Protein Kinase-Dependent Mechanism in Acute Otitis Media"],"prefix":"10.1128","volume":"82","author":[{"given":"Wei","family":"Wang","sequence":"first","affiliation":[{"name":"Department of Laboratory Medicine, Key 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