Group A Streptococcus infection and respiratory tract infection / 中华实用儿科临床杂志

Group A Streptococcus (GAS), also known as Streptococcus pyogenes, is one of the key pathogenic bacteria leading to bacterial infection in children.GAS infection can result in both non-invasive and invasive infections.GAS plays a crucial role in contributing to childhood respiratory tract infections, including pharyngitis, tonsillitis and pneumonia.In order to improve clinical understanding of GAS, the relationship between GAS and respiratory tract infections were introduced from the aspects of epidemiology, pathogenesis, clinical characteristics, diagnosis and treatment.

Chinese experts′ consensus statement on diagnosis, treatment and prevention of Group A Streptococcus infection related diseases in children / 中华实用儿科临床杂志

Group A Streptococcus (GAS) is a very important pathogen, especially for children.On a global scale, GAS is an important cause of morbidity and mortality.But the burden of disease caused by GAS is still unknown in China and also has not obtained enough attention.For this purpose, the expert consensus is comprehensively described in diagnosis, treatment and prevention of GAS diseases in children, covering related aspects of pneumology, infectiology, immunology, microbiology, cardiology, nephrology, critical care medicine and preventive medicine.Accordingly, the consensus document was intended to improve management strategies of GAS disease in Chinese children.

Huai qi huang granules for the treatment of children with mycoplasma pneumoniae pneumonia: a multicenter clinical study / 国际儿科学杂志

Objective To analyze the effects of Hual qi huang granules on children with mycoplasma pneumoniae pneumonia.Methods A randomized,multicenter parallel controlled clinical trial was carried out.A total of 3 000 cases of hospitalized children with mycoplasma pneumoniae pneumonia were selected.All of them were given treatment for mycoplasma pneumoniae pneumonia with macrolide antibiotics and symptomatic treatment.They were randomly divided into 2 groups:research group and control group.The children of research group were give oral Huai qi huang granules for three months.According to the classification of pneumonia,these two groups were divided into:lobar pneumonia research group,lobar pneumonia control group,lobular pneumonia research group,lobular pneumonia control group.The hospitalization duration of fever,length of hospital stay,the absorption area of lung inflammation and pneumonia severity sores were observed.The frequency of upper respiratory infections,bronchitis,pneumonia were observed in 3 months after discharge.Results 2 378 cases were investigated.The hospitalization duration of fever,length of hospital stay of research group were significantly shorter than that of in control group (P ＜ 0.001).The children with lobar pneumonia,2 weeks after treatment,the absorption of consolidation of the lobar pneumonia research group is significantly better than lobar pneumonia control group (P ＜0.001).After two weeks treatment,the pneumonia scores of lobar pneumonia research group is lower than lobar pneumonia control group (P ＜ 0.05).Followup of 3 months after hospital discharge,frequency of upper respiratory infection and bronchitis of research group,were significantly lower than that of control.In addition,appetite increased significantly in research group than control (P ＜ 0.001).There are 21 cases with drug associated adverse reactions (mild diarrhea),including 12 cases of research group,9 cases of control group,and there was no statistical significance (P ＞0.05).Conclusion Standard treatment combined with oral Huai qi huang granules in the treatment of mycoplasma pneumoniae pneumonia,can significantly shorten hospitalization duration of fever,length of hospital stay and reduce the severity score of pneumonia.Three months oral Huai qi huang granules can significant reduce the frequency of respiratory infections and bronchitis,also can increase patients appetite,and be safe.

Huaiqihuang granule in adjuvant treatment of childhood asthma:a randomized controlled,multicenter study / 国际儿科学杂志

Objective To observe the clinical efficacy and safety of GINA regimen and GINA regimen combined with oral Huaiqihuang granule in the treatment of children with bronchial asthma.Methods A ran-domized,single blind,multicenter,parallel controlled clinical trial wascarried out.A total of 1 128 patients with bronchial asthma in children were randomized into two groups.The observation group were treated with GINA regimen combined with oral Huaiqihuang granule.The GINA regimen treatment group was treated by GINA reg-imen.Clinical assessment and C-ACT scores was observed in first month,third month,sixth month after treat-ment.Clinical assessment included the times of upper respiratory tract infection occurrence,bronchitis and pneu-monia,asthmatic attacks,application of emergency medicine,hospitalizations due to asthmatic.Drug adverse effect in the two groups was compared.Results The times of upper respiratory tract infection,bronchitis and pneumonia,asthmatic was significantly decreased(P 0.05).Conclusion The treatment of bronchial asthma in children with GINA regimen combined with oral Huaiqihuang granule can significantly reduce the incidence of respiratory infections and the number of asthmatic attacks dramatically and safely improve clinical curative effect,asthma control.

Silencing IL-23 expression by a small hairpin RNA protects against asthma in mice

To determine the impact of IL-23 knockdown by RNA interference on the development and severity of ovalbumin (OVA)-induced asthmatic inflammation, and the potential mechanisms in mice, the IL-23-specific RNAi-expressing pSRZsi-IL-23p19 plasmid was constructed and inhaled into OVA-sensitized mice before each challenge, as compared with that of control mice treated with alum or budesonide. Inhalation of the pSRZsi-IL-23p19, significantly reduced the levels of OVA-challenge induced IL-23 in the lung tissues by nearly 75%, determined by RT-PCR. In addition, knockdown of IL-23 expression dramatically reduced the numbers of eosinophils and neutrophils in BALF and mitigated inflammation in the lungs of asthmatic mice. Furthermore, knockdown of IL-23 expression significantly decreased the levels of serum IgE, IL-23, IL-17, and IL-4, but not IFNgamma, and its anti-inflammatory effects were similar to or better than that of treatment with budesonide in asthmatic mice. Our data support the notion that IL-23 and associated Th17 responses contribute to the pathogenic process of bronchial asthma. Knockdown of IL-23 by RNAi effectively inhibits asthmatic inflammation, which is associated with mitigating the production of IL-17 and IL-4 in asthmatic mice.

The expression of β_2 AR and IL-12 and their interaction with childhood asthma / 临床儿科杂志

Objective To study the relationship between asthma and mRNA expression of β_2AR and IL-12 gene;to determine the expression level of β_2AR, IL-12 related to CysLT_1-receptor;to analyze the correlation between the severity of asthma and the level of the genes expression. Methods White blood cells was drawn from peripheral blood mononuelear cells of asthmatic children. DNA was taken and related genes were analyzed for half quantitative analysis by D-congeal glue analyzer software. Results The level of IL-12. β_2AR mRNA expression in the asthma group is obviously lower than healthy controls (P < 0.01) ;when asthma attacks, the expression of IL-12 is positively correlated to that of β_2AR (r = 0.34, P = 0.001) and negatively correlated to that of CysLT_1-receptor (r = -0.92, P = 0.001), the expression of β_2AR is negatively correlated to the expression of CysLT_1-receptor (r = -0.85, P = 0.003). The express of IL-12 is not related to the severity of asthma (P = 0.16), while there was a negative correlation between the expression of β_2AR and the severity of asthma (P = 0.003). Conclusions The expression level of IL-12, β_22AR in the asthmatic children is obviously lower than normal;The expression level of IL-12 is positively correlated to β_2AR in PBMC of asthmatic children;The expression level of CysLT_1-receptor is negatively correlated to IL-12 and β_2AR in the PBMC of asthmatic children;The expression of β_2AR is negatively correlated to the severity of asthma.