A 3-year-old boy with Guillain-Barré syndrome and encephalitis associated with Mycoplasma pneumoniae infection.

Mycoplasma pneumoniae is a common cause of respiratory tract illness in children. Among the most common extrapulmonary manifestations are disorders of the central nervous system, including meningitis, meningoencephalitis, cerebellitis, polyneuropathy, acute disseminated encephalomyelitis, and Guillain-Barré syndrome. Guillain-Barré syndrome, also known as acute inflammatory demyelinating polyradiculoneuropathy, is an acute-onset, immune-mediated disorder of the peripheral nervous system. The central nervous system is usually intact in patients with Guillain-Barré syndrome. However, there have been some reports of an association of Guillain-Barré syndrome with central nervous system involvement in children. We report a 3-year-old boy with M. pneumoniae infection associated with Guillain-Barré syndrome and encephalitis. Both serum anti-GM1 ganglioside (IgG and IgM) and anti-galactocerebroside IgG antibodies were detected in our patient: the former in the earlier stage of the disease, and the latter in the later stage. We speculate that anti-GM1 ganglioside was associated more with encephalitis, and anti-galactocerebroside antibody was associated more with GBS in our case. Our patient is the youngest report of Guillain-Barré syndrome with central nervous system involvement, and the first report of a pediatric patient with associated M. pneumoniae infection. Such cases are rarely reported, but highlight the need for awareness of the association of the infection with Guillain-Barré syndrome with central nervous system involvement.

Intracardiac and Cerebral Thrombosis Complicated With Mycoplasma Pneumonia.

A seven-year-old girl developed multiposition thrombosis after fever and respiratory symptoms. Chest computed tomography (CT) scan demonstrated bilateral infiltrates, consolidation of the right lower lobe, and pleural effusion in the right lung field. Brain magnetic resonance imaging (MRI) showed multiple abnormal signals in the brain with limited diffusion, and cerebral infarction could not be excluded. Echocardiography revealed hypoechoic mitral valve tips, which are likely to be suspected as vegetation. Mycoplasma pneumoniae infection was clarified by a four-fold increase in IgG antibodies to M. pneumoniae sera. D-dimer levels were elevated increasingly. We found and reported this rare pediatric case of an M. pneumoniae-induced severe pneumonia complicated with intracardiac and cerebral thrombosis. We investigate the clinical characteristics, diagnosis, and treatment of refractory mycoplasma pneumonia complicated with intracardiac and cerebral thrombosis in children.

Efficacy and Influencing Factors of Sangju Cough Mixture in the Adjuvant Treatment of Adult Patients with Mycoplasma pneumoniae Infection: A Retrospective Study.

Purpose: Sangju-Yin, supplemented with some drugs, has frequently demonstrated therapeutic efficacy against colds, albeit its effect on Mycoplasma pneumoniae (MP) infection remains unknown. Therefore, we aimed to elucidate the treatment efficacy and influencing factors of a Sangju cough mixture on MP infection in adults. Patients and Methods: Between January 2021 and December 2022, 150 adult patients with MP infection at the Lishui Hospital of Traditional Chinese Medicine Affiliated with Zhejiang University of Traditional Chinese Medicine were assigned to the treatment (administered Sangju cough mixture and moxifloxacin tablets) or the control (administered moxifloxacin tablets) groups. Results: When compared with the control group, the treatment group exhibited significantly improved traditional Chinese medicine syndrome scores, increased CD4+ T cell levels, and decreased CD8+ T cell levels (all P < 0.05). After 7 days of treatment, the negative conversion rate of the MP-specific immunoglobulin M (MP-IgM) antibody of the treatment group was not significantly different from that of the control group (P > 0.05); however, after 14 days of treatment, the rate was significantly higher in the treatment group (P < 0.05). The univariate regression analysis revealed that combined chronic respiratory disease, failure to take Sangju cough mixture, combined pneumonia, Nutritional Risk Screening 2002 (NRS 2002) score of at least 3 points, and age were associated with the negative conversion of the MP-IgM antibody (all P < 0.05). Nevertheless, the multivariate regression model revealed that the NRS 2002 score of at least 3 points was not an independent risk factor (P > 0.05). Conclusion: Sangju cough mixture can improve symptoms, accelerate the negative conversion time of MP-IgM antibody, and promote rehabilitation of the patients.

Insights into the defensive roles of lncRNAs during Mycoplasma pneumoniae infection.

Mycoplasma pneumoniae causes respiratory tract infections, affecting both children and adults, with varying degrees of severity ranging from mild to life-threatening. In recent years, a new class of regulatory RNAs called long non-coding RNAs (lncRNAs) has been discovered to play crucial roles in regulating gene expression in the host. Research on lncRNAs has greatly expanded our understanding of cellular functions involving RNAs, and it has significantly increased the range of functions of lncRNAs. In lung cancer, transcripts associated with lncRNAs have been identified as regulators of airway and lung inflammation in a process involving protein complexes. An excessive immune response and antibacterial immunity are closely linked to the pathogenesis of M. pneumoniae. The relationship between lncRNAs and M. pneumoniae infection largely involves lncRNAs that participate in antibacterial immunity. This comprehensive review aimed to examine the dysregulation of lncRNAs during M. pneumoniae infection, highlighting the latest advancements in our understanding of the biological functions and molecular mechanisms of lncRNAs in the context of M. pneumoniae infection and indicating avenues for investigating lncRNAs-related therapeutic targets.

Clinical Value of Different Test Methods in Diagnosing Mycoplasma pneumoniae Infection in Children.

This research aimed to investigate the diagnostic value of passive particle agglutination test, Mycoplasma pneumoniae (MP) culture, cold agglutination test (CAT), enzyme-linked immunosorbent assay (ELISA), and polymerase chain reaction-capillary electrophoresis fragment analysis (PCR-CEFA) for MP infection. Children with respiratory tract infections suspected to be MP infection were subjected to passive particle agglutination test, MP culture, CAT, ELISA, and PCR-CEFA. A total of 146 children (81 males, 65 females, mean age: 5.74 ± 3.32 years, and mean course of disease: 9.07 ± 5.18 days) met the inclusion criteria. The positivity rate of MP detection by MP culture was 69.18% (101/146). Using the MP culture method as the standard, higher sensitivity and positive predictive value were found in the PCR-CEFA compared with the other 3 methods. Appropriate methods are selected following the advantages and disadvantages of pathogen detection, and pediatric MP infection is analyzed by integrating various test results.

Myelin Oligodendrocyte Glycoprotein (MOG) antibody-associated meningoencephalitis due to Mycoplasma pneumoniae infection.

Although myelin oligodendrocyte glycoprotein (MOG) antibody-associated disorders include a wide spectrum of syndromes, manifestations with meningoencephalitis symptoms due to M. pneumoniae infection were quite infrequent. We admitted an 8-years-old girl who presented with recurrent fever accompanied by headache and mild cough, her Cerebral spinal fluid polynucleated cells was elevated and progressively higher, her cranial MRI showed meningeal enhancement initially and multiple intracranial lesions later, serum M. pneumoniae-IgM and MOG-IgG were positive, she was diagnosed with MOG-IgG associated meningoencephalitis due to M. pneumoniae infection, the treatment consisted of intravenous immunoglobulin, glucocorticoid, and erythromycin, then she was completely recovered.

Diagnostic Challenges in Pulmonary Embolism in Young Adults: Thrombosis Associated With Cytomegalovirus and Mycoplasma pneumoniae.

A 23-year-old man presented with a fever, shaking chills, headaches, nausea, and a dry cough. Investigations showed lymphocytic leukocytosis with atypical lymphocytes in a blood smear. Liver function test results, D-dimer concentrations, and fibrin degradation product concentrations were greatly elevated. Computed tomography of the whole body with contrast showed hepatosplenomegaly with splenic infarction and bilateral pulmonary embolism without deep vein thrombosis. Cytomegalovirus (CMV) immunoglobulin M, and serum CMV pp65 antigenemia were positive, and serum Mycoplasma pneumoniae (M. pneumoniae) antibody was also highly positive. These results suggested the diagnosis of co-infection of CMV and M. pneumoniae complicated by systemic arteriovenous thrombosis, which resulted in pulmonary embolism and splenic infarction. After he started edoxaban tosilate hydrate for the thrombosis, his symptoms resolved in a few days. To the best of our knowledge, this is the first case of co-infection of CMV and M. pneumoniae leading to pulmonary embolism and splenic infarction.

Lemierre's Syndrome as a Sexually Transmitted Disease Due to Porphyromonas asaccharolytica Suspected to Be Caused by Pharyngitis Due to Mycoplasma pneumoniae and Epstein-Barr Virus.

Porphyromonas asaccharolytica rarely causes Lemierre's syndrome (LS), which is characterised by sepsis and thrombophlebitis of the internal jugular vein. An 18-year-old man presented with fever and a sore throat after sexual contact containing oral sex, and his blood sample was positive for atypical lymphocytes. Infectious mononucleosis was suspected initially. However, laboratory data showed elevated D-dimer and procalcitonin levels, and a computed tomography scan showed a thrombus in the internal jugular vein leading to the diagnosis of LS. The Mycoplasma pneumoniae (MP) IgM titre was 1:640 (normal, ≦1:40), and the Epstein-Barr nuclear antigen titre (taken 59 days after admission) was 1:10 (normal, <1:10). It was assumed that LS developed after infection with Epstein-Barr virus (EBV) and MP. LS should be suspected in young patients with fever and sore throat with a history of recent sexual contact. As pharyngitis was considered the cause of LS, evaluation of the preceding infection such as MP or EBV leading to pharyngitis should also be considered.

Guillain-Barre Syndrome Caused by Mycoplasma pneumoniae Infection in an Elderly Patient Initially Misdiagnosed As Frailty.

A 73-year-old man with a history of hypertension was referred to our department because of progressive frailty while being treated for acute heart failure. Physical examination revealed loss of tendon reflexes in the lower extremities and muscle weakness in all extremities. After close examination, he was diagnosed with Guillain-Barre syndrome (GBS), which was preceded by a Mycoplasma pneumoniae infection. He was given high-dose intravenous immunoglobulin (IVIg) therapy, and his muscle weakness improved. This case suggests that symptoms of neurological disorders in the elderly may be viewed as frailty. Being elderly is a poor prognostic factor for GBS; therefore, early diagnosis and consultation with a neurologist are necessary. Physical examination is essential to differentiate frailty from neurological disorders, and deep tendon reflexes are instrumental in making a diagnosis of GBS.

Absence of Association between Previous Mycoplasma pneumoniae Infection and Subsequent Myasthenia Gravis: A Nationwide Population-Based Matched Cohort Study.

Mycoplasma pneumoniae (M. pneumoniae) is not only one of the most common pathogenic bacteria for respiratory infection but also a trigger for many autoimmune diseases. Its infection process shared many similarities with the pathogenesis of myasthenia gravis (MG) at cellular and cytokine levels. Recent case reports demonstrated patients present with MG after M. pneumoniae infection. However, no epidemiological studies ever looked into the association between the two. Our study aimed to investigate the relationship between M. pneumoniae infection and subsequent development of MG. In this population-based retrospective cohort study, the risk of MG was analyzed in patients who were newly diagnosed with M. pneumoniae infection between 2000 and 2013. A total of 2428 M. pneumoniae patients were included and matched with the non-M. pneumoniae control cohort at a 1:4 ratio by age, sex, and index date. Cox proportional hazards regression analysis was applied to analyze the risk of MG development after adjusting for sex, age, and comorbidities, with hazard ratios and 95% confidence intervals. The incidence rates of MG in the non-M. pneumoniae and M. pneumoniae cohorts were 0.96 and 1.97 per 10,000 person-years, respectively. Another case-control study of patients with MG (n = 515) was conducted to analyze the impact of M. pneumoniae on MG occurrence as a sensitivity analysis. The analysis yielded consistent absence of a link between M. pneumoniae and MG. Although previous studies have reported that M. pneumoniae infection and MG may share associated immunologic pathways, we found no statistical significance between M. pneumoniae infection and subsequent development of MG in this study.

Kawasaki Disease With Combined Cholestatic Hepatitis and Mycoplasma pneumoniae Infection: A Case Report and Literature Review.

Kawasaki disease (KD), also called mucocutaneous lymph node syndrome, is a febrile multisystem vasculitis mainly affecting children younger than 5 years. KD typically manifests as skin lesions and in the lymph nodes and oral and conjunctival mucosa. It may induce coronary artery abnormalities, such as aneurysms, but gastrointestinal and hepatobiliary involvement are not common. We reviewed 32 cases of patients with a diagnosis of KD with hepatobiliary involvement between 2000 and 2021 and present the case of a 4-year-old girl who received a diagnosis of KD with combined cholestatic hepatitis and Mycoplasma pneumoniae infection. In the 33 cases reviewed, in addition to the classical clinical findings of KD, the most common clinical presentations were jaundice and abdominal pain. Moreover, abnormal laboratory results indicating hyperbilirubinemia, cholestasis, and hepatitis, among other conditions, were noted. Abdominal ultrasonography revealed abnormal findings in more than half children with KD with hepatobiliary involvement. Furthermore, cardiac involvement was noted in a high proportion of the patients. In particular, we noted the case of a 4-year-old girl with a rare presentation of 3-day fever combined with abdominal pain and jaundice. Her levels of aspartate aminotransferase, alanine aminotransferase, total bilirubin, direct bilirubin, alkaline phosphatase, and γ-glutamyl transpeptidase were 489 (15-50) U/L, 253 (5-45) U/L, 4.3 (<1.5) mg/dl, 2.4 (<0.2) mg/dl, 337 (134-315) U/L, and 145 (5-32) U/L, respectively. These results were indicative of cholestatic hepatitis. Furthermore, her serological test results for mycoplasma infection were positive. KD was diagnosed because the patient had high fever for more than 5 days and presented with lymphadenopathy on the left side of neck, a polymorphic skin rash, redness of oral mucosa with strawberry tongue, and nonpurulent conjunctival congestion. After intravenous immunoglobulin injection (IVIG) and acetylsalicylic acid administration, the fever subsided rapidly and clinical manifestations, such as jaundice and abdominal pain, were mitigated. The laboratory parameters gradually returned to within normal ranges. Echocardiography revealed no aneurysm. In conclusion, KD with cholestatic hepatitis should be considered when pediatric patients present with fever combined with abdominal pain and jaundice. Early treatment with IVIG and aspirin is recommended and can effectively relieve cholestatic hepatitis.

Observation of azithromycin sequential therapy combined with pediatric massage on chronic cough after mycoplasma pneumoniae infection in children / 中国药师

Objective To explore the clinical efficacy of azithromycin sequential therapy(AST)combined with infantile massage(IM)in children with chronic cough after mycoplasma pneumoniae infection(CCAMP)phlegm-heat closed lung syndrome(PHCLS),and provide a new scheme for the clinical diagnosis and treatment of CCAMP.Methods The study retrospectively collected children with CCAMP-PHCLS diagnosed in the Second Affiliated Hospital of Guangzhou University of Chinese Medicine from March 2022 to March 2023.According to the treatment regimes,the children were divided into AST group and AST+IM group.The differences in cough symptoms integral and inflammatory factors(IL-6,PCT and CRP)between the two groups of CCAMP-PHCLS children were observed and compared.In addition,the total time to disappearance of clinical symptoms/signs,negative conversion of serum MP antibody(MP-IgM),total treatment response rate and incidence of adverse reactions were compared between the two groups.Results A total of 98 CCAMP-PHCLS children were collected,49 in each group.There were no significant differences between the AST+IM group and AST group in daytime cough symptoms points,nighttime cough symptoms points,serum IL-6 content,serum PCT content,and serum CRP content before treatment(P>0.05).After treatment,the daytime cough symptoms,serum IL-6,serum PCT and serum CRP in both groups significantly decreased compared to before treatment,and the above indicators in the AST+IM group were lower than those in the AST group(P<0.05).In terms of clinical characteristics,CCAMP-PHCLS children lost cough,fever and lung rales in the AST+IM group were shorter than the AST group(P<0.05),and the MP-IgM conversion rate was significantly higher than the AST group(P<0.05).In addition,in terms of clinical efficacy and safety,the total response rate of CCAMP-PHCLS in the AST+IM group was significantly higher than that in the AST group(P<0.05),while the incidence of adverse reactions of CCAMP-PHCLS in the AST+IM group was significantly lower than that in the AST group(P<0.05).Conclusion IM combined with AST has significant efficacy and high safety in children with CCAMP.The potential possible mechanism is that IM mediate production of inflammatory factors,and improves airway inflammation,thus alleviating clinical symptoms and signs.

Association of Mycoplasma pneumoniae infection with increased risk of asthma in children.

The present study was conducted to investigate the relationship between Mycoplasma pneumoniae (MP) infection and the risk of asthma among children by detecting the rate of MP immunoglobulin M (MP-IgM) and the eosinophil (EOS) count. A total of 139 asthmatic children were enrolled as the case group and assigned into three groups: Group A (aged <3 years, n=42), group B (aged 3-8 years, n=45) and group C (aged >8 years, n=52). Additionally, 115 healthy children were enrolled in the control group. Enzyme-linked immunosorbent assay was used to measure the MP-IgM-positive rate. EOS count was detected in the experimental and control groups by using a hemocytometer analyzer. A meta-analysis was performed by using the Comprehensive Meta-Analysis version 2.0 software. The positive rates of the MP-IgM and EOS count in the experimental group were significantly higher than those in control group (both P<0.001). Furthermore, the asthmatic children in group C had a higher MP-IgM-positive rate and EOS count as compared to those in groups A and B, respectively (all P<0.05). Results from groups A and B were not statistically significant (all P>0.05). The meta-analysis further confirmed that asthmatic children had a higher MP-IgM-positive rate as compared to the healthy controls (P<0.001). Age-stratified analysis revealed that the MP-IgM-positive rate in asthmatic children aged ≥8 and <8 years was significantly higher than that in the healthy controls (P=0.003 and P<0.001). Asthmatic children had a higher MP-IgM-positive rate and EOS count as compared with controls, suggesting that the MP infection may be closely associated with the risk of asthma. Additionally, the positive rate of MP-IgM may indicate an important biological marker in predicting the development of asthma.

Clinical analysis of 10 children with cardiac thrombus associated with Mycoplasma pneumoniae infection / 中华实用儿科临床杂志

Objective:To explore the case characteristics, treatment and prevention measures of cardiac thrombus in children caused by Mycoplasma pneumoniae infection, so as to improve the clinicians′ understanding of the disease.Methods:The clinical data of 10 children with cardiac thrombus caused by Mycoplasma pneumoniae infection treated in Department of Respiratory Intervention, Jinan Children′s Hospital from November 2015 to January 2020 were retrospectively analyzed, including datum of cases, laboratory results, imaging data and follow-up results.Results:A total of 10 children (7 males and 3 females) were included with the median age of 6.5 years old, and all had fever for more than 1 week.The plasma D-dimer (D-D) of 9 children was significantly increased, and the C-reactive protein (CRP) of 6 children was increased.After anti-infection treatment, the absorption of pneumonia with atelectasis was better than before.The embolus disappeared after operation in 1 case, and the remaining 9 cases received anticoagulant therapy, among which 7 cases received Heparin anticoagulant therapy alone: cardiac embolus disappeared during hospitalization in 2 cases, disappeared after 2 weeks of oral administration of Dipyridamole outside the hospital in 1 case, and the other 4 cases received Heparin anticoagulant therapy alone during hospitalization with poor effect, embolus disappeared in 2 cases 4 and 5 months after discharge respectively, and 2 cases were not reexamined due to personal reasons; the embolus disappeared 2 months after discharge in 2 cases who were changed to low-molecular weight Heparin + Warfarin anticoagulant therapy after failing to respond to Heparin anticoagulant therapy.All the 10 cases showed no symptoms of tachypnea or chest pain during telephone follow-up.Conclusions:Children with long fever time and significantly elevated CRP and D-D are more likely to form thrombus.Anticoagulant therapy is effective after thrombosis, and surgical thrombectomy can be performed in children who have failed to respond to anticoagulant therapy or worry about complications caused by dropped embolus.

Significance and progress in laboratory diagnosis of Mycoplasma pneumoniae pneumonia / 中华实用儿科临床杂志

Mycoplasma pneumoniae pneumonia (MPP) is a clinical common respiratory tract infectious di-sease.In recent years, the number of children with severe and refractory MPP has increased significantly.Clinical symptoms of MPP are usually atypical, and some MPP cases are accompanied with extrapulmonary complications.In addition, imaging features of MPP also lack specificity.The diagnosis of MPP, as a result, often relies on laboratory examinations.The present study demonstrated the clinical significance in laboratory diagnosis of Mycoplasma pneumoniae (MP) infection, and the method to distinguish present infection, previous infection or carriers in healthy children′s respiratory tract.Moreover, the method to determine macrolide-resistant MP was also described in this study.This study aims to improve the understanding, diagnosis and treatment of MP infection.

Changes of serum TNF-α, IL-5 and IgE levels in the patients of mycoplasma pneumonia infection with or without bronchial asthma.

OBJECTIVE: This study aimed to investigate the changes of serum levels of TNF-α, IL-5 and IgE in mycoplasma pneumonia (MP) infection patients with or without bronchial asthma and explore its clinical importance. METHODS: ELISA and Western blot assay were performed to detect the serum levels of TNF-α, IL-5 and IgE in 35 healthy subjects, 45 patients with MP infection and 40 bronchial asthma patients with MP infection. RESULTS: The serum levels of TNF-α, IL-5 and IgE in MP infection patients and asthma patients with MP infection were significantly higher than those in healthy subjects (P<0.01). Moreover, the serum levels of TNF-α, IL-5 and IgE in asthma patients with MP infection was markedly higher than those in MP infection patients (P<0.05). Correlation analysis showed serum TNF-α was positively associated with serum IL-5 (r=0.9636, P<0.01), serum TNF-α positively related to IgE (r=0.9841, P<0.01) and serum IgE positively relevant with serum IL-5 (r=0.9572, P<0.01) in asthma patients with MP infection. CONCLUSION: Our findings indicate that serum levels of TNF-α, IL-5 and IgE may play important roles in the pathogenesis of MP infection, especially in asthma patients.

Changes in levels of IL-9, IL-17, IFN-γ, dendritic cell numbers and TLR expression in peripheral blood in asthmatic children with Mycoplasma pneumoniae infection.

Mycoplasma pneumoniae (MP) infection in children with asthma resulted in a more severe allergic state compared with a non-MP infected group. The infection rate of children with asthma was higher than that of the other groups, suggesting that being asthmatic may be a predisposing factor for MP infection and that the infection itself is an important co-factor in the disease progression of asthma. The number of dendritic cells (DCs) and the expression of TLR2 and TLR4 were compared in 22 asthmatic patients with MP infection, 22 asthmatic patients without MP infection, and 17 normal children as controls. The percentages of DCs in the peripheral blood of the three groups showed significant differences between asthmatic children with MP infection and controls, and asthmatic children without MP and controls (P<0.05), whereas no difference was found between asthmatic children with and without MP infection. The asthmatic children with MP infection group showed increased expression of TLR-2 and TLR-4 on DCs (P<0.01). Asthmatic patients infected with MP showed that DCs and TLRs (TLR-2, TLR-4) might play an important role in asthma pathogenesis with MP infection. The cytokines produced by the T-cell subsets in asthmatic children with MP infection showed a significant increase in IL-9 (P<0.01) and a decrease in IFN-γ (P<0.05) levels post-MP infection, while the IL-17 level remained stable (P>0.05), indicating a shift towards Th1/Th9 in the presence of MP infection.

Two kinds of test methods of Mycoplasma pneumoniae infection in children / 中国生化药物杂志

Objective To investigate two methods for the detection of Mycoplasma pneumoniae infection in children. Methods The choice of the January 2015-2017 year in January in our hospital 60 cases of Mycoplasma pneumoniae infection in children as the research object, underwent rapid serological tests (control group), rapid detection of microbial culture (observation group), the detailed records of the two group with the experimental data,and the data for comparative analysis and discuss the diagnostic value of two test methods of Mycoplasma pneumoniae infection in children. Results The positive rate of the observation group was higher than that of the control group, and the positive rate of the children in the age group of 4-8 was higher than that of other age groups, the difference was statistically significant (P<0.05). Conclusion Children with Mycoplasma pneumoniae infection have a higher positive rate of rapid detection of microorganisms, especially in children of 4-8 years of age.It is worthy of wide clinical application.

Clinical Observation of Azithromycin Combined with Reduning Injection in the Treatment of Children with Mycoplasma Pneumoniae Infection / 中国药房

OBJECTIVE:To observe the clinical efficacy and safety of azithromycin combined with Reduning injection in the treatment of children with mycoplasma pneumoniae infection. METHODS:80 children with mycoplasma pneumoniae infection were randomly divided into control group and research group. All the children were given routine treatment,including oxygen inha-lation,defervescence,nutritional support,reducing sputum and relieving asthma,etc. Based on it,children in control group were orally treated by Azithromycin enteric coated tablets 10 mg/kg,once a day. Children in research group were treated by Reduning in-jection 10 ml and 5% glucose injection 100 ml by intravenous infusion,once a day,based on the treatment in control group. The course of both was 14 d. The clinical data was observed,including the clinical efficacy,interleukin-6 (IL-6),interleukin-8 (IL-8),tumor necrosis factor-α(TNF-α)and the incidence of adverse reactions(ADR)before and after treatment. RESULTS:The total effective rate in research group was significantly higher than control group,with significant difference(P0.05). CONCLUSIONS:Based on the routine treatment,azithromycin combined with Reduning injection has more obvious efficacy than only azithromycin in the treatment of children with mycoplasma pneumoniae infection with similar safety.

Investigation of Correlation between Gene Polymorphism of Apolipoprotein E and Mycoplasma Pneumoniae Infection in Children / 现代检验医学杂志

Objective To study the relationship between gene polymorphism of apolipoprotein E (apolipoproteinE,ApoE)of peripheral blood and Mycoplasma pneumoniae infection in children.Methods Collected 236 cases serum of inpatient and outpatient screening in children with Mycoplasma pneumoniae infection and healthy children between March 2011 and March 2014 in the First Affiliated Hospital of Xi’an Medical University and Xi’an Children’s Hospital,at the age of 3~8 years old,divided into two groups:110 cases of control group and 126 cases of Mycoplasma pneumoniae infection in chil-dren.Used multiple allele-specific PCR (multi-AS PCR)to detect gene polymorphism of ApoE in each group.Results ApoE gene was polymorphic and 6 genotypes:3 homozygous (ε2/2,ε3/3,ε4/4)and 3 heterozygote (ε3/2,ε3/4,ε4/2).Theε3/2 had four bands,ε3/3,ε3/4 and 4/2 had three bands,ε2/2 andε4/4 had two bands.ε3/3 of ApoE genotype distribution in two groups was the most common,control group was 66.7%,infection group was 46.4%.Allele frequencies ofε3 and genotype frequencies ofε3/3 inMycoplasmapneumoniae infection of children were lower than those in control group (P<0.05).But allele frequencies ofε4 and genotype frequency ofε4/4 in Mycoplasma pneumoniae infection of children were increased, which were compared with those in control group (P<0.05).Conclusion There were an association between ApoE gene polymorphism and the incidence of Mycoplasma pneumoniae infection in children.Allelesε3 seems to be a protective factor and allelesε4 may contribute to the development of Mycoplasma pneumoniae infection of children.