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Objective:To study the value of neutrophil-to-lymphocyte ratio (NLR) and platelet-to-lymphocyte ratio (PLR) in diagnosing severe Mycoplasma pneumoniae pneumonia (MPP).Methods:A total of 616 cases of MPP patients in the Children′s Hospital of Soochow University from January 2015 to December 2017 were retrospectively analyzed.During the same period, 100 healthy children were selected as the healthy control group.NLR and PLR between MPP group and healthy control group, and those between severe MPP group and ordinary MPP group were compared by t test or rank sum test.Risk factors for severe MPP were identified.Receiver operating characteristic(ROC) curves were plotted to identify the cut-off point of NLR and PLR in distinguishing MPP from healthy subjects. Results:(1)The median of white blood cell count (WBC), neutrophil count (N), platelet count (PLT), NLR, PLR, immunoglobulin M (IgM) and the median percentage of CD3 -CD 19+ , CD 19+ CD 23+ in MPP group were significantly higher than those in healthy control group(8.36×10 9/L vs.7.49×10 9/L, 4.41×10 9/L vs.3.11×10 9/L, 340.92×10 9/L vs.234.00×10 9/L, 1.70 vs.0.91, 112.99 vs.70.34, 1.33 g/L vs.1.29 g/L, 20.95% vs.17.10%, 11.25% vs.9.70%), whereas the median of lymphocyte count (L), IgA and the median percentage of CD3 + , CD3 + CD8 + , and CD3 -CD +(16+ 56) were significantly lower(2.64×10 9/L vs.3.37×10 9/L, 0.86 g/L vs.1.30 g/L, 64.55% vs.68.00%, 23.65% vs.24.90%, 10.50% vs.12.20%)( Z=-3.074, -2.413, -2.972, -1.357, -1.863, -2.251, -4.282, -3.420, -2.221, -4.181, -2.784, -2.024, -2.791, all P<0.05). (2)The median of N, NLR, PLR, IgA, IgG, IgM and the average of percentage of CD3 + , CD3 + CD8 + in severe MPP group were significantly higher than those in ordinary MPP group[5.18×10 9/L vs.3.52×10 9/L, 2.39 vs.1.03, 149.32 vs.94.23, 1.29 g/L vs.0.71 g/L, 9.63 g/L vs.8.19 g/L, 1.40 g/L vs.1.29 g/L, (65.53±9.75)% vs.(62.81±9.89)%, (25.35±6.65)% vs.(23.38±6.91)%], whereas the median of L, the median percentage of CD3 -CD 19+ , and CD 19+ CD 23+ were significantly lower than those of ordinary MPP group(2.02×10 9/L vs.3.25×10 9/L, 17.40% vs.21.50%, 9.00% vs.11.70%)( Z/ t=-7.807, -11.313, -10.452, -8.819, -6.162, -3.047, -3.128, -3.270, -9.402, -5.191, -5.214, all P<0.05). (3)Univariate and multivariate Logistic regression analysis showed that CD3 -CD 19+ was the protective factor for severe MPP, while N, NLR and PLR were the risk factors for severe MPP (all P<0.05), with the risk sequence of NLR>PLR>N.(4)Area under ROC curve analysis of NLR and PLR in the diagnosis of severe MPP: NLR: AUC=0.789, 95% CI: 0.754~0.823, P<0.001; PLR: AUC=0.767, 95% CI: 0.730~0.804, P<0.001; when the critical value of NLR was 1.09, the sensitivity was 98.9%, and the specificity was 70.6%.When the critical value of PLR was 97.47, the sensitivity and specificity were 88.5% and 69.4%. Conclusions:NLR and PLR can be served as independent influencing factors for severe MPP, showing the diagnostic potential in severe MPP.
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Macrolide and corticosteroid resistance has been reported in patients with Mycoplasma pneumoniae (MP) pneumonia (MPP). MP clearance is difficult to achieve through antibiotic treatment in sensitive patients with severe MPP (SMPP). SMPP in children might progress to airway remodeling and even bronchiolitis/bronchitis obliterans. Therefore, identifying serum biomarkers that indicate MPP progression and exploring new targeted drugs for SMPP treatment require urgency. In this study, serum samples were collected from patients with general MPP (GMPP) and SMPP to conduct proteomics profiling. The Fc fragment of the IgG-binding protein (FCGBP) was identified as the most promising indicator of SMPP. Biological enrichment analysis indicated uncontrolled inflammation in SMPP. ELISA results proved that the FCGBP level in patients with SMPP was substantially higher than that in patients with GMPP. Furthermore, the FCGBP levels showed a decreasing trend in patients with GMPP but the opposite trend in patients with SMPP during disease progression. Connectivity map analyses identified 25 possible targeted drugs for SMPP treatment. Among them, a mechanistic target of rapamycin kinase (mTOR) inhibitor, which is a macrolide compound and a cell proliferation inhibitor, was the most promising candidate for targeting SMPP. To our knowledge, this study was the first proteomics-based characterization of patients with SMPP and GMPP.
Subject(s)
Child , Humans , Biomarkers , Carrier Proteins , Immunoglobulin Fc Fragments , Immunoglobulin G , Macrolides , Mycoplasma pneumoniae , Pneumonia, Mycoplasma/drug therapy , ProteomicsABSTRACT
Objective:To summarize the clinical characteristics of plastic bronchitis caused by severe mycoplasma pneumoniae pneumonia in children, to find the risk factors for plastic bronchitis, and to provide references for judging the prognosis and comprehensively formulating treatment plans.Methods:We retrospectively analyzed the clinical data(146 cases)of children with severe mycoplasma pneumoniae pneumonia who underwent bronchoscopy in the Department of Pediatric Respiratory Medicine of Shengjing Hospital of China Medical University from January 2017 to December 2019.According to whether it was plastic bronchitis, all patients were divided into plastic bronchitis group(68 cases) and non-plastic bronchitis group(78 cases), and the gender, age, laboratory examination indicators, imaging characteristics and treatment of children were collected under the circumstances.The single factor with clinical significance and statistical significance would be subjected to multivariate Logistic regression analysis.Results:There were no significant differences in gender, age, heat duration, white blood cell count, C-reactive protein value, and interleukin-6 value between the two groups(all P>0.05). The percentage of neutrophils, alanine aminotransferase, aspartate aminotransferase, lactate dehydrogenase, D-dimer, number of cases of pleural effusion, length of hospital stay, and number of endoscopy in the plastic bronchitis group were higher than those in non-plastic bronchitis group, the number of right upper lobe consolidation cases was less than that in the non-plastic bronchitis group, and the differences were statistically significant( P<0.05). Multiple Logistic regression analysis showed that pleural effusion( OR=4.898, 95% CI 2.195-10.926) and lactate dehydrogenase ( OR=1.051, 95% CI 1.003-1.101) were independent predictors of plastic bronchitis in children with severe mycoplasma pneumoniae pneumonia. Conclusion:For children with severe mycoplasma pneumoniae pneumonia, if lung CT shows that the upper lobe of the non-right lung is uniformly compacted and complicated with pleural effusion, lactate dehydrogenase is significantly increased, and attention should be paid to the possibility of plastic bronchitis.Timely improvement of fiberoptic bronchoscopy may shorten the course of the disease and reduce the occurrence of complications.
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Objective:To investigate the safety and efficacy of moxifloxacin in children with severe Mycoplasma pneumoniae pneumonia (SMPP).Methods:The patients with SMPP in the Pediatric Intensive Care Unit of Beijing Children's Hospital between January 2017 and April 2020 were retrospectively analyzed. Clinical data were collected to assess therapeutic efficacy, analyze drug safety and summarize positive rate of macrolide-resistant Mycoplasma pneumoniae genes mutation.Results:Thirty-nine children diagnosed SMPP treated with moxifloxacin were included. The positive rate of macrolide-resistant Mycoplasma pneumoniaegenes mutation was 95.2%. In the 39 patients, 6 (15.4 %) were cured, 29 (74.4 %) were effective, 2 (5.1 %) were no response, 2 (5.1 %) were discharged automatically during treatment with moxifloxacin, and the overall response rate was 89.8 %. The situations of consciousness, skin, joint, heart rhythm and gastrointestinal function were carefully observed; Blood routine test, liver and kidney function were closely monitored. There were no adverse drug reactions in the period of medication. No children were discontinued due to adverse reactions.Conclusions:Moxifloxacin can improve efficacy and prognosis for pediatric patients with SMPP. There are no drug adverse reactions during treatment with moxifloxacin, indicating that short-term medication is safe. The application of quinolones in pediatric patients is off-label drug use, and clinical pharmacists should assist clinicians in reducing medical risks.
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Mycoplasma pneumoniae pneumonias are common in children.In recent years,the incidence of refractory mycoplasma pneumonia has been increasing,and some of the severe children have a poor response to macrolide antibiotics.However,the effect of glucoconicoid therapy may have unexpected results.The recognition of severe mycoplasma pneumonia risk factors may contribute to intervent with glucocorticoid early,reduce the occurrence of severe mycoplasma pneumonia,and improve the prognosis.Clinical studies have found that clinical manifestations,imaging findings,laboratory tests and other factors are related to the occurrence of severe mycoplasma pneumonia.In this paper,the risk factors that may be associated with accurrence of severe mycoplasma pneumonias are reviewed.
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Objective To explore the change of 8-iso-prostaglandin F2α(8-iso-PGF2α),serum ferritin (SF) and superoxide dismutase(SOD) in serum from children with mycoplasma pneumoniae pneumonia(MPP) and severe mycoplasma pneumoniae pneumonia(SMPP),and investigate the correlation between the severity of lung injury induced by oxidative stress(OS) and the severity in children with SMPP.Methods Sixty cases with MPP,30 cases with SMPP and 20 health children were selected in our study.The level of 8-iso-PGF2α,SOD and SF in serum were detected.Results (1) There were no significant difference regarding of 8-iso-PGF2α levels between the MPP group and the healthy control group ((6.01 (13.14)) ng/L vs.4.33 (2.42)) ng/L,P ＞ 0.05).The 8-iso-PGF2α level in patient of the SMPP group was 24.20 (24.05)) ng/L,significantly higher than that in the healthy control group (P ＜ 0.01) and MPP group (P ＜ 0.01).(2) There were no significant difference between the MPP group μg/L] and the healthy control group in terms of SF level((80.91 (54.57) μg/L vs.(82.48 (70.60)) μg/L,P ＞ 0.05).The SF level in the SMPP group was 139.69 (120.98)) μg/L,significantly higher than that in the healthy control group(P ＜ 0.01) and MPP group(P ＜ 0.O1).(3) The level of SOD in the MPP group was 138.60(25.20)) kU/L,significantly higher than that in the healthy control group ((123.10(11.28)) kU/L; P ＜ 0.01).The level of SOD in the SMPP group was 94.43 (63.58)) kU/L,significantly lower than that in the healthy control group (P ＜ 0.05).And level of SOD in the MPP group was significantly higher than that in the SMPP group(P ＜ 0.01).Conclusion The severity of lung injury induce by OS was related with the severity of the children with SMPP.OS may be a important factor in patients with SMPP exacerbation of lung injury.