Pathogens in bronchoalveolar lavage fluid of children with lower respiratory tract infection / 中国当代儿科杂志

OBJECTIVE@#To study the features of pathogens in children with lower respiratory tract infection.@*METHODS@#A total of 108 children who were hospitalized due to lower respiratory tract infection and underwent fiber bronchoscopy between January 2017 and June 2018 were enrolled. Bronchoalveolar lavage fluid samples were collected. Multiple quantitative real-time PCR was performed to detect pathogens.@*RESULTS@#Of the108 children, 85 (78.7%) were found to have pathogens, among whom 52 (48.1%) had single pathogen infection and 33 (30.6%) had multiple pathogen infections. Mycoplasma pneumoniae was detected in 38 children (35.2%), and was the most common pathogen. The children aged 36 - <72 months had the highest detection rate of Mycoplasma pneumoniae. Both Streptococcus pneumoniae and Haemophilus influenzae were detected in 29 children (26.9%) and Streptococcus pneumoniae was mainly detected in children aged <24 months. Each of Acinetobacter baumannii, Candida albicans and Klebsiella pneumoniae was detected in 3 children. Among the 31 children with bronchopneumonia, 9 were found to have Haemophilus influenza, with the highest detection rate of 29%. Among the 34 children with lobar pneumonia, 22 were found to have Mycoplasma pneumoniae, with the highest detection rate of 65%. Among the 22 children with bronchial foreign bodies and bronchopneumonia, 10 were found to have Streptococcus pneumoniae, with the highest detection rate of 45%.@*CONCLUSIONS@#In children with lower respiratory tract infection, Mycoplasma pneumoniae is the most common pathogen, followed by Streptococcus pneumoniae and Haemophilus influenzae. There are differences in the detection rates of pathogens between children with different ages and different types of lower respiratory tract infection.

Genetic diversity of Chuanmingshen violaceum by SRAP markers / 中草药

Objective: In order to correctly identify the different germplasm resources of Chuanmingshen violaceum and gain the excellent germplasm resources, SRAP molecular marker was used to analyze the genetic diversity of C. violaceum. Methods: C. violaceum was collected from seven different areas, which included 24 samples, the DNA fingerprint of C. violaceum was constructed with SRAP molecular marker, and the genetic diversity was analyzed. Results: Totally 374 bands were amplified by 37 primer pairs, of which 283 bands were polymorphic, and the polymorphic percentage was 75.67%. The SRAP-based genetic similarity coefficient of all samples ranged from 0.7267 to 0.9239, with a mean of 0.8150. The analysis of molecular variance showed higher percentages of genetic variation within population. All the accessions could be distinguished by SRAP markers. The cluster analysis results showed that 63 accessions were classified into seven groups, which were correlated with the geographical distribution of the accessions to some degree. The accessions from Langzhong and Jintang had higher diversity. Conclusion: There actually exists plentiful genetic diversity among the genetic resources of C. violaceum. SRAP marker is a useful method for analyzing the genetic diversity among C. violaceum accessions.

Roles of FIZZ1 and NOTCH1 in asthma / 中国当代儿科杂志

<p><b>OBJECTIVE</b>To investigate the roles of FIZZ1 and NOTCH1 in the pathogenesis of asthma and the effect of rosiglitazone on airway remodeling.</p><p><b>METHODS</b>Forty-five healthy 6 to 8-week-old Sprague-Dawley rats were randomly divided into a control group and asthma groups with and without rosiglitazone treatment. The paraffin slices of lung tissues were made to assess the histological changes. a-SMA protein, a specific marker of airway remodeling, in lung tissues was measured by immunohistochemistry. FIZZl-mRNA and NOTCH1-mRNA expression in lung tissues was measured by RT-PCR.</p><p><b>RESULTS</b>The characteristic changes of airway remodeling were observed in the untreated asthma group. The histological changes in the airway were less severe in the rosiglitazone treated asthma group. Positive a-SMA staining, FIZZl-mRNA and NOTCH1-mRNA were highly expressed in peribronchial lung sections isolated from the untreated asthma group. Rosiglitazone treatment decreased significantly the expression of a-SMA protein, FIZZl-mRNA and NOTCH1-mRNA compared with the untreated asthma group, but the expression of a-SMA protein, FIZZl-mRNA and NOTCH1-mRNA in the rosiglitazone treated asthma group remained higher than the control group. a-SMA expression was positively correlated with FIZZl-mRNA (r=0.826, P<0.01) and NOTCH1-mRNA expression (r=0.9, P<0.01). FIZZl-mRNA expression was positively correlated with NOTCH1-mRNA expression (r=0.76, P<0.01).</p><p><b>CONCLUSIONS</b>FIZZl and NOTCH1 may induce an increase in a-SMA expression. FIZZl and NOTCH1 play a critical role in the process of airway remodeling. Rosiglitazone treatment may inhibit airway remodeling in asthmatic rats.</p>

Safety problems and countermeasures of electroacupuncture instruments / 中国针灸

According to the clinical experience and the active role of electroacupuncture instruments in clinical acupuncture and moxibustion, the potential security hazards of the available electroacupuncture instruments are pointed out. These hazards not only can cause injury to a varying degrees for the patient, but also lead to a poor therapeutic effect. The reasons of the security problems are mainly inaccurate regulation parameters, unreasonable displaying parameters, unscientific output of constant voltage, and unqualified protection measures for the electroacupuncture instrument. The countermeasures improving security and the measures increasing the intelligent level of the electroacupuncture instrument are put forward.

Risk factors for fungal pneumonia in neonates: analysis of 160 cases / 中国当代儿科杂志

<p><b>OBJECTIVE</b>To study the risk factors for the development of fungal pneumonia in neonates.</p><p><b>METHODS</b>A total of 260 neonates with nosocomial infectious pneumonia were classified into two groups: fungal pneumonia (n=160) and bacterial pneumonia (n=100). Their medical data were retrospectively studied.</p><p><b>RESULTS</b>Eighty-seven percent of patients in the fungal pneumonia group had a duration of hospital stay of >10 days, but 30.1% of patients in the bacterial pneumonia group (p<0.01). The preterm infants in the fungal pneumonia group accounted for 49.5%, which was significantly higher than that in the bacterial pneumonia group (22.0%) (p<0.01). In the fungal pneumonia group, 59.9% of patients showed a weight of <2 500 g, but 34.0% of patients in the bacterial pneumonia group (p<0.01). The duration of the combined use of more than two broad-spectrum antibiotics (p<0.05) and the total duration of antibiotics use in the fungal pneumonia group was significantly longer than that in the bacterial pneumonia group (p<0.05). Nosocomial infectious bacterial pneumonia was common as the primary disease of fungal pneumonia (n=145).</p><p><b>CONCLUSIONS</b>Premature delivery, lower weight, longer duration of hospital stay and antibiotics use, and combined use of more than two broad-spectrum antibiotics may increase the risk of fungal pneumonia in neonates. The development of fungal pneumonia may be related to nosocomial infectious bacterial pneumonia in neonates.</p>

Distribution and drug resistance of pathogens in lower respiratory tract infection in neonates / 中国当代儿科杂志

<p><b>OBJECTIVE</b>To investigate the epidemiological characteristics of pathogens and their antimicrobial susceptibility in neonates with lower respiratory tract infection (LRTI).</p><p><b>METHODS</b>Sputum specimens for bacterial cultures were collected from 1173 neonates with LRTL between January 2005 and December 2006. Antibiotic susceptibility tests were performed after bacteria had been identified.</p><p><b>RESULTS</b>A total of 707 pathogenic strains (60.3%) were identified, including 521 (73.7%) Gram-negative bacilli, 106 (15.0%) Gram-positive bacilli, and 80 (11.3%) fungi. E Coli, Klebsiella pneumoniae, Pseudomonas aeruginosa, and enteric bacilli were common cultured Gram-negative bacilli. Most strains of Gram-negative bacilli were susceptible to meropenem, piperacillin/tazobactam, the fourth generation cephalosporin, cebfoperazone/sulbactam and amikacin. Staphylococcus aureus and coagula-negative staphylococci (CNS) were common in the cultured Gram-positive bacilli. Staphylococcus aureus and CNS were susceptible to vancomycin, ciprofloxacin and piperacillin/tazobactam but were resistant to Penicillin.</p><p><b>CONCLUSIONS</b>Gram-negative bacilli predominate the pathogens of LRTI in neonates. E Coli, Klebsiella pneumoniae, and Pseudomonas aeruginosa are major pathogens.</p>

Studies on flavonoids from herb of Artemisia ordosica / 中国中药杂志

<p><b>OBJECTIVE</b>To study the chemical constituents of Artemisia ordosica.</p><p><b>METHOD</b>The chemical constituents were isolated and repeatedly purified on silica gel column and the structures were elucidated by the NMR spectra and physico-chemical properties.</p><p><b>RESULT</b>Eight flavonoids were obtained and identified as 5-hydroxy-7, 4'-dimethoxyflavanone, 5-hydroxy-7, 4'-dimethoxyflavone, 5, 4'-dihydroxy-7-methoxyflavone, 5, 7-dihydroxy-6, 4'-dimethoxyflavone, 5, 4'-dihydroxy-7-methoxyflavanone, 5, 3', 4'-trihydroxy-7-methoxyflavanone, 5, 7-dihydroxy-3', 4'-dimethoxyflavone and 5, 3', 4'-trihydroxy-7-methoxyflavone.</p><p><b>CONCLUSION</b>All the compounds were obtained from A. ordosica for the first time.</p>

Studies on chemical constituents in herb of Chondrilla piptocoma / 中国中药杂志

<p><b>OBJECTIVE</b>To study the chemical constituents of Chondrilla piptocoma.</p><p><b>METHOD</b>The chemical constituents were isolated and repeatedly purified on silica gel column and the structures were elucidated by the NMR spectra and physico-chemical properties.</p><p><b>RESULT</b>Seven compounds were obtained and they are identified as luteolin, 5,7,4'-trihydroxy-3'-methoxy flavone, luteolin-7-O-beta-D-glucoside, apigenin, beta-sitosterol, stigmasterol, ursolic acid.</p><p><b>CONCLUSION</b>All the compounds were obtained from C. piptocoma for the first time.</p>

Pre- evaluation of Effect of Litalin in Children with Attention Deficit/Hyperactivity Disorder by P300 / 实用儿科临床杂志

Objective To investigate the change of P300 of the attention - deficit/hyperactivity disorder children before and after they took litalin, according to this objective subject to guide the clinical treatment of ADHD children. Methods Using the looking se-ducible electricity stimulates 22 ADHD children, and check the change of latency and the rate of the wave before and after they took litalin. Results After ADHD children took litalin, their latency of P300 has decreased clearly, and the amplitude had no change. Conclusion The changes of P300 latency in ADHD children after they took litalin can be adopted as the guidelines of clinical treatment for the ADHD children.

Relationship of the expressions of PPAR-?mRNA and MMP-9 with coronary artery lesions in patients with coronary heart disease / 中华老年医学杂志

Objective To investigate the relationship of the levels of peroxisome proliferator- activated receptor-?(PPAR-?)mRNA,MMP-9 with the severity of coronary artery lesions in patients with coronary heart disease(CHD).Methods One hundred and fifty three patients with CHD who underwent coronary angiography were admitted.The expression of PPAR-?mRNA in lymphocytes of peripheral blood was detected by using RT-PCR,the level of MMP-9 enzyme was measured by enzyme-linked immunosorent assay,and the severity of coronary artery lesions were analyzed. Results As compared with control(0.624-0.13),PPAR-?mRNA expression was significantly lower in CHD patients(0.4+0.12).Negative correlation was found between PPAR-?mRNA and the classification(r=-0.56,P＜0.01)of coronary artery lesions,so was the number of coronary artery lesions(r=-0.42,P＜0.01).MMP-9 level was significantly higher in CHD patients(1.27?0.16)?g/L than that in controls(1.21?0.05)?g/L.Positive correlation was found between MMP-9 level and the classification(r=0.36,P＜0.01)of coronary artery lesions,so was the number of coronary artery lesions(r=0.30,P＜0.01).Negative correlation was also found between PPAR-?mRNA expression and MMP-9 level.Conclusions PPAR-?is a negative regulator of coronary artery lesions and PPAR-?inhibits the activation of MMP-9.It may be a valuable method for protecting patients from the incident of coronary artery disease to activate the expression of PPAR-?and decrease the level of MMP-9.