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Chinese Journal of Contemporary Pediatrics ; (12): 425-429, 2017.
Artículo en Chino | WPRIM | ID: wpr-351330

RESUMEN

<p><b>OBJECTIVE</b>To investigate the changes in serum YKL-40 level and humoral immune function and their significance in children with recurrent pneumonia.</p><p><b>METHODS</b>Blood samples were collected from 30 children with recurrent pneumonia (recurrent pneumonia group), 30 children with acute pneumonia (acute pneumonia group), and 30 healthy children (control group). Serum YKL-40 levels were measured by enzyme-linked immunosorbent assay. The correlation between serum YKL-40 level and laboratory indices related to humoral immune function was analyzed. The receiver operating characteristic (ROC) curve was used to analyze the diagnostic value of serum YKL-40 level for recurrent pneumonia.</p><p><b>RESULTS</b>The recurrent pneumonia group had a significantly higher serum YKL-40 level than the acute pneumonia and control groups (P<0.05). The acute pneumonia group had a significantly higher serum YKL-40 level than the control group (P<0.05). Serum levels of IgG and complement 4 in the recurrent pneumonia group were significantly lower than in the acute pneumonia group (P<0.05). Serum YKL-40 level was negatively correlated with serum IgG level (r=-0.309, P=0.047) and serum complement 4 level (r=-0.324, P=0.039). The area under the ROC curve of serum YKL-40 level for diagnosing recurrent pneumonia was 0.958 (95%CI: 0.921-0.994).</p><p><b>CONCLUSIONS</b>Humoral immune function is low in children with recurrent pneumonia. Serum YKL-40 may be involved in the occurrence of recurrent pneumonia and can be used as a reference index for diagnosing recurrent pneumonia.</p>


Asunto(s)
Preescolar , Femenino , Humanos , Masculino , Proteína 1 Similar a Quitinasa-3 , Sangre , Complemento C4 , Inmunidad Humoral , Inmunoglobulina G , Sangre , Neumonía , Alergia e Inmunología , Recurrencia
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