Application of Mycoplasma pneumoniae antibody and load index in the diagnosis of Mycoplasma pneumoniae pneumonia in children

XIE Hui; LI Ji-Ming; ZHANG Hui-Fen; WANG Ye; ZHONG Li-Lin; LIAN Qing-Rong; DONG Hong-Ba

doi:10.7499/j.issn.1008-8830.2016.10.013

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Chinese Journal of Contemporary Pediatrics ›› 2016, Vol. 18 ›› Issue (10) : 984-987. DOI: 10.7499/j.issn.1008-8830.2016.10.013

CLINICAL RESEARCH

Application of Mycoplasma pneumoniae antibody and load index in the diagnosis of Mycoplasma pneumoniae pneumonia in children

XIE Hui¹, LI Ji-Ming², ZHANG Hui-Fen¹, WANG Ye², ZHONG Li-Lin¹, LIAN Qing-Rong¹, DONG Hong-Ba¹

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Abstract

Objective To study the role of Mycoplasma pneumoniae (MP) load and antibody measurements in the diagnosis of MP pneumonia. Methods A total of 115 children with MP pneumonia and 400 healthy children were enrolled. The MP load and total antibody level were measured at different stages, and the MP load index (MPLI) was calculated. Results The cut-off value of MPLI for MP infection was 6.12. MPLI and total antibody titer increased during the course of the disease, while MP-DNA decreased rapidly. Within the same time of blood collection, the group with a higher MP load had a significantly higher total antibody titer than the group with a lower MP load (P < 0.05). Within 2 weeks of the course of the disease, the negative antibody group had a significantly higher MPLI than the positive antibody group (P < 0.05). Conclusions MPLI provides a standardized quantitative value of MP-DNA and plays an important role in the early diagnosis of MP infection.

Key words

Mycoplasma pneumoniae / Mycoplasma pneumoniae load index / Total antibody titer / Child

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XIE Hui, LI Ji-Ming, ZHANG Hui-Fen, WANG Ye, ZHONG Li-Lin, LIAN Qing-Rong, DONG Hong-Ba. Application of Mycoplasma pneumoniae antibody and load index in the diagnosis of Mycoplasma pneumoniae pneumonia in children[J]. Chinese Journal of Contemporary Pediatrics. 2016, 18(10): 984-987 https://doi.org/10.7499/j.issn.1008-8830.2016.10.013

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