期刊
INTERNATIONAL JOURNAL OF INFECTIOUS DISEASES
卷 29, 期 -, 页码 18-23出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ijid.2014.07.020
关键词
Refractory Mycoplasma pneumoniae pneumonia; Children; Clinical characteristics
资金
- National Natural Science Foundation of China [81401296]
- Social Development, Science and Technology Projects of Jiangsu Province [BE2012652]
- Science and Technology Projects for the youth of Suzhou [SYS201350]
Objectives: The purpose of this study was to explore the clinical and laboratory characteristics of children with refractory Mycoplasma pneumoniae pneumonia (RMPP). Methods: Seventy-six children with RMPP and 26 children with non-refractory M. pneumoniae pneumonia (NRMPP), confirmed by both serology and fluorescent quantitation PCR in bronchoalveolar lavage fluid (BALF), were evaluated retrospectively. Results: Compared to those with NRMPP, children with RMPP were older (66.6 +/- 39.0 vs. 48.4 +/- 35.4 months, p = 0.038) and had a longer duration of fever (12.7 +/- 2.6 vs. 7.5 +/- 1.8 days) and hospital stay (12.1 +/- 3.2 vs. 7.4 +/- 2.9 days). Children with RMPP presented neutrophil infiltration both in serum and BALF, as well as severe pulmonary lesions with pleural effusion. Children with RMPP had a significantly higher M. pneumoniae DNA load in BALF compared to NRMPP patients, and the M. pneumoniae load in BALF was significantly correlated with neutrophils and inversely correlated with macrophages for both the NRMPP and RMPP groups. The serum concentrations of tumor necrosis factor alpha (median 114.5 pg/ml, range 49.1-897.9 pg/ml) and interferon gamma (median 376.9 pg/ml, range 221.4-1997.6 pg/ml) were significantly higher in children with RMPP compared to children with NRMPP. Conclusions: This study indicates that a direct microbe effect and the subsequent induced excessive host immune response contribute in part to the progression of RMPP. (C) 2014 The Authors. Published by Elsevier Ltd on behalf of International Society for Infectious Diseases.
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