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Updated: Mar 19, 2026

Characterization of Inflammatory Responses During Intranasal Colonization with Streptococcus pneumoniae
Published on: January 17, 2014
Mycoplasma pneumoniae and Streptococcus pneumoniae caused different microbial structure and correlation network in
Heping Wang1, Wenkui Dai1, Chuangzhao Qiu1
11 Department of Respiratory Diseases, Shenzhen Children's Hospital, Shenzhen 518026, China ; 2 WeHealthGene, Shenzhen 518000, China ; 3 Department of Computer Science, City University of Hong Kong, 83 Tat Chee Avenue Kowloon, Hong Kong, China ; 4 Shenzhen University Medical Center, Shenzhen University, Shenzhen 518052, China.
Abstract:
Pneumonia is one of the most serious diseases for children, with which lung microbiota are proved to be associated. We performed 16S rDNA analysis on broncho-alveolar lavage fluid (BALF) for 32 children with tracheomalacia (C group), pneumonia infected with Streptococcus pneumoniae (S. pneumoniae) (D1 group) or Mycoplasma pneumoniae (M. pneumoniae) (D2 group). Children with tracheomalacia held lower microbial diversity and accumulated Lactococcus (mean ± SD, 45.21%±5.07%, P value <0.05), Porphyromonas (0.12%±0.31%, P value <0.05). D1 and D2 group were enriched by Streptococcus (7.57%±11.61%, P value <0.01 when compared with D2 group) and Mycoplasma (0.67%±1.25%, P value <0.01) respectively. Bacterial correlation in C group was mainly intermediated by Pseudomonas and Arthrobacter. Whilst, D1 group harbored simplest microbial correlation in three groups, and D2 group held the most complicated network, involving enriched Staphylococcus (0.26%±0.71%), Massilia (0.81%±2.42%). This will be of significance for understanding pneumonia incidence and progression more comprehensively, and discerning between bacterial infection and carriage.
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