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Liu M, Meng K, Jiang J, Zhang L, Sun S. Comparison of serodiagnosis methods for community-acquired Mycoplasma pneumoniae respiratory tract infections in children. Medicine (Baltimore) 2023; 102:e34133. [PMID: 37478238 PMCID: PMC10662900 DOI: 10.1097/md.0000000000034133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Accepted: 06/07/2023] [Indexed: 07/23/2023] Open
Abstract
This study aimed to evaluate the diagnostic value of chemiluminescence immunoassay (CLIA), passive particle agglutination (PPA), and indirect immunofluorescence assay (IFA) in detecting Mycoplasma pneumoniae infection in children. Serum samples from 165 children with acute community-acquired respiratory tract infections were examined using CLIA, PPA, and IFA, and consistency coefficient, specificity, and sensitivity were analyzed. Compared with the PPA (titer ≥ 1:160), the consistency coefficients of the immunoglobulin(Ig)M-CLIA, immunoglobulin(Ig)G-CLIA and IgM-IFA methods were 93.94%, 75.76%, and 83.64%, respectively. The positive likelihood ratio (PLR) and specificity of IgM-CLIA was 19.40 and 95.49%, respectively. The consistency coefficient of (IgM+IgG)-CLIA and PPA (titer ≥ 1:160) was 89.1%, and the sensitivity and negative predictive value of (IgM+IgG)-CLIA were 96.88% and 98.94%, respectively. CLIA MP-IgM has high concordance with PPA, and its specificity and sensitivity are higher than those of CLIA MP-IgG and IFA MP-IgM, suggesting its better diagnosis of early MP infection. The sensitivity and negative predictive value of CLIA MP (IgM+IgG) were higher than those of PPA or IFA, indicating that it should be considered as a priority in the diagnosis of MP infection.
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Affiliation(s)
- Mengyang Liu
- Department of Clinical Laboratory, The Affiliated Hospital of Qingdao University, Qingdao, P.R. China
| | - Ke Meng
- Department of Physical Examination of Qilu Hospital (Qingdao), Shandong University, Qingdao, P.R. China
| | - Jun Jiang
- Department of Physical Examination of Qilu Hospital (Qingdao), Shandong University, Qingdao, P.R. China
| | - Li Zhang
- Department of Immunology, School of Basic Medicine, Qingdao University, Qingdao, P.R. China
| | - Shiying Sun
- Department of Clinical Laboratory, The Affiliated Hospital of Qingdao University, Qingdao, P.R. China
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Li QL, Wu YY, Sun HM, Gu WJ, Zhang XX, Wang MJ, Yan YD, Hao CL, Ji W, Chen ZR. The role of miR-29c/B7-H3/Th17 axis in children with Mycoplasma pneumoniae pneumonia. Ital J Pediatr 2019; 45:61. [PMID: 31088519 PMCID: PMC6518711 DOI: 10.1186/s13052-019-0655-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Accepted: 04/29/2019] [Indexed: 12/18/2022] Open
Abstract
Background Mycoplasma pneumoniae (M. pneumoniae) is one of the most common causes of community-acquired pneumonia in children. Recent studies demonstrated that the incidence of severe or fatal M. pneumoniae was gradually increasing, which may be related to the excessive inflammation. However, the exact pathogenesis of excessive inflammation in Mycoplasma pneumoniae pneumonia(MPP) is still unclear. This study aimed to reveal the role of miR-29c/B7-H3/Th17 axis in children with MPP. Methods Children hospitalized in Respiratory Department during Jan. 2014 to Dec. 2015 were enrolled. All children enrolled was confirmed with MP infection using real-time PCR and ELISA. Children were excluded if they were co-infected with other pathogens. A total of 52 children with MPP and 26 controls were enrolled. miR-29c expression in monocytes of children with MPP was determined by real-time PCR and soluble B7-H3 (sB7-H3) and IL-17 were determined by ELISA, and explore their clinical significance. miR-29c overexpression and silencing technology and luciferase reporter assay were performed to confirm whether B7-H3 is the direct target of miR-29c. The levels of transcription factor ROR-γt in CD4+ T cells and cytokine IL-17A in supernatant were detected after stimulated by different concentrations of B7-H3 fusion protein in vitro. Results Of all 52 children with MPP, the mean age of the children were 77 ± 33 months, and 23 cases were male accounting for 44.2%. Nineteen cases had pleural effusion accounting for 36.5%. Children with MPP had significantly lower level of miR-29c and higher level of sB7-H3 and IL-17 compared to controls (both P < 0.05). The level of miR-29c significantly increased during convalescent phase compared to that of acute phase while sB7-H3 and IL-17 significantly decreased during convalescent phase (both P < 0.05). There was a positive correlation between the level of sB7-H3 and IL-17 in children with MPP during acute-stage (r = 0.361,P = 0.009). Children with MPP combined with pleural effusion had significantly higher level of sB7-H3 compared to those without pleural effusion (9952.3 ± 3065.3 vs. 7449.7 ± 2231.5, pg/ml), and the levels of sB7-H3 was positively correlated with the number of days of fever. The level of miR-29c was negatively correlated with M. pneumoniae specific IgG, IgM level. High concentrations of B7-H3(15μg/ml) could enhance ROR-γt expression and increase IL-17A. Functional studies based on luciferase reporter assay and immunofluorescence staining suggested that B7-H3 is the direct target of miR-29c, and miR-29c silencing or overexpression could up- or down-regulate the expression of B7-H3 in THP-1 cells. Conclusions The axis of miR-29c/B7-H3/Th17 plays a vital role in children with MPP through excessive inflammation. miR-29c and B7-H3 may be the new target for the prevention and treatment of MPP, and may be the novel and potential biomarkers for the assessment of prognosis.
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Affiliation(s)
- Qing-Ling Li
- Department of Respiratory Disease, Children's Hospital of Soochow University, Jingde Road NO.303, Jiangsu Province, Suzhou, 215003, China
| | - Yin-Yin Wu
- Department of Respiratory Disease, Children's Hospital of Soochow University, Jingde Road NO.303, Jiangsu Province, Suzhou, 215003, China
| | - Hui-Ming Sun
- Department of Respiratory Disease, Children's Hospital of Soochow University, Jingde Road NO.303, Jiangsu Province, Suzhou, 215003, China
| | - Wen-Jing Gu
- Department of Respiratory Disease, Children's Hospital of Soochow University, Jingde Road NO.303, Jiangsu Province, Suzhou, 215003, China
| | - Xin-Xing Zhang
- Department of Respiratory Disease, Children's Hospital of Soochow University, Jingde Road NO.303, Jiangsu Province, Suzhou, 215003, China
| | - Mei-Juan Wang
- Department of Respiratory Disease, Children's Hospital of Soochow University, Jingde Road NO.303, Jiangsu Province, Suzhou, 215003, China
| | - Yong-Dong Yan
- Department of Respiratory Disease, Children's Hospital of Soochow University, Jingde Road NO.303, Jiangsu Province, Suzhou, 215003, China
| | - Chuang-Li Hao
- Department of Respiratory Disease, Children's Hospital of Soochow University, Jingde Road NO.303, Jiangsu Province, Suzhou, 215003, China
| | - Wei Ji
- Department of Respiratory Disease, Children's Hospital of Soochow University, Jingde Road NO.303, Jiangsu Province, Suzhou, 215003, China
| | - Zheng-Rong Chen
- Department of Respiratory Disease, Children's Hospital of Soochow University, Jingde Road NO.303, Jiangsu Province, Suzhou, 215003, China.
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Gao CH, Ji BJ, Han C, Wang MS. Comparison of enzyme-linked immunosorbent assay with indirect immunofluorescence assay for the diagnosis of Mycoplasma pneumoniae infection. J Clin Lab Anal 2018; 33:e22677. [PMID: 30221425 DOI: 10.1002/jcla.22677] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2018] [Revised: 08/10/2018] [Accepted: 08/18/2018] [Indexed: 11/05/2022] Open
Abstract
BACKGROUND The study aimed to compare enzyme-linked immunosorbent assay (ELISA) with indirect immunofluorescence assay (IFA) in the diagnosis of Mycoplasma pneumoniae infection. METHODS From March 2016 to May 2017, 180 patients suspected with M. pneumoniae infection were enrolled. The SeroMP kit using ELISA and PNEUMOSLIDE kit using IFA were performed in parallel to detect the IgM antibodies against M. pneumoniae. Cohen's kappa statistics were used to assess the agreement between the ELISA and IFA assays, multivariate logistic regression analysis was used to evaluate risk factors for the discordance between the ELISA and IFA assays. RESULTS The mean age of the enrolled subjects was 46.6 ± 21.1 years. For detection of M. pneumoniae infection, the positivities of the ELISA and IFA assays were 15.6% (95% CI: 11.0%, 21.6%) and 10.0% (95% CI: 6.4%, 15.3%), respectively. The total positivity was 19.4% (95% CI: 14.3%, 25.8%). The agreement between the ELISA and IFA assays was low (κ = 0.117, P < 0.001). Variables associated with discordant results between ELISA and IFA assays in multivariate analysis were as follows: male (OR: 0.366; 95% CI: 0.149, 0.899; P < 0.05), age (>33 years old; OR: 0.313; 95% CI: 0.129, 0.758; P < 0.05). CONCLUSION In detection of M. pneumoniae infection, low agreement was found in IgM assays between the ELISA and IFA methods, female and younger age were significant risk factors for the discordance. A combination of ELISA and IFA tests would be recommended, in order to detect more patients suspected of M. pneumoniae infection in clinical practice.
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Affiliation(s)
- Chun-Hai Gao
- Department of Clinical Laboratory, Linyi People's Hospital, Linyi, China
| | - Bao-Ju Ji
- Department of Clinical Laboratory, Linyi People's Hospital, Linyi, China
| | - Chao Han
- Department of Geriatrics, Shandong Mental Health Center, Jinan, China
| | - Mao-Shui Wang
- Department of Lab Medicine, Shandong Provincial Chest Hospital, Jinan, China
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