Atopic dermatitis is a complex chronic, relapsing inflammatory skin disease.Atopic dermatitis in children is usually less severe than in adults, but it is with a high incidence and is susceptible to relapse.Therefore, the physical and mental health of children and their family maybe seriously affected.In the past, the treatments of atopic dermatitis have been limited to glucocorticoids and immunosuppressants.It is unsafe for children because of their toxicities.With the in-depth understanding of pathogenesis, more and more new therapies that focus on intervening in the inflammatory pathway by targeting specific cytokines or their receptors have been found and applied.This article reviews the progress of treatment of the disease to provide new insights for the optimal treatment of atopic dermatitis.

Objective To explore the diagnostic value of ultrasonic elastography and fine flow imaging in differential diagnosis of cervical lymph nodes.Methods Totally 87 lymph nodes were examined with ultrasonic elastography,fine flow and conventional ultrasonography.The results were confirmed with postoperative pathology or fine-needle biopsy as well as follow-up.Using consistency check of Kappa and ROC curve to analyse the accuracy of three types of ultrasonic examination.Results Taking the results of postoperative pathology or fine-needle biopsy as well as follow-up as golden standards,the Kappa value of conventional ultrasonography was poor (Kappa =0.153,P =0.078),fine flow was moderate (Kappa =0.526,P ＜0.01) and ultrasonic elastography was better (Kappa =0.741,P ＜0.01).The area under ROC of ultrasonic elastography,fine flow and conventional ultrasonography was 0.899 (P ＜0.01),0.787 (P ＜0.01) and 0.568 (P =0.241),respectively.Conclusions Ultrasonic elastography is more valuable to differentiate malignant from benign lymph nodes.

OBJECTIVE To study the risk factors of extended-spectrum beta-lactamases(ESBLs) producing bacteria infection in children,and provide reference to prevent and control the prevalence of bacterial strain of ESBLs.METHODS In a case and control studys the samples were selected randomly from 2007 to 2009 in the Children′s Hospital of Shanxi Province.The samples of case and control were all 100.RESULTS ?2 Test showed that boy and baby,previous history,pneumonia,medical ward,hospital infection and using antibiotics before admission to hospital were the risk factors;t-test showed that high white blood cell and neutrophil were the protective factors;Logistic regression showed that boy,previous history,hospital infection,using antibiotics before admission to hospital and medical ward were the risk factors and anal tube was a protective factor.CONCLUSIONS Increasing the rate of bacteriological test to the children who have the relative risk factors is very important to prevent and control the prevalence of ESBLs strain.

Objective To explore the relationship between the volume and function of the heart and the pathogenesis of vasovagol syncope (VVS) through the detection of the left atrial volume index(LAVI).Methods The 68 cases in the observation group were diagnosed as VVS and hospitalized in the First Hospital of Jilin University from Jan.1 to Dec.31 in 2012.The 60 cases in the control group were children and adolescents receiving healthy physical examinations during the same period.All the patients were given the examination of heart color Doppler ultrasound,head up tilt test(HUT),body height,body mass,chest X-ray and accounted the LAVI and cardiothoracic ratio was accounted.Results The average age in the observation group and the control group was(12.19 ± 2.01) and(12.15 ± 2.00) years old,respectively.And there was no statistically significant difference in age between these two groups (t =0.10,P ＞0.05).There were 23 boys and 45 girls in the observation group,and 31 boys and 29 girls in the control group.There was statistically significant difference in the ratio of gender composition between these two groups (x2 =4.16,P ＜ 0.05).The LAVI values in these two groups were (21.23 ± 2.04) mL/m2 and (23.45 ± 3.01) mL/m2,respectively.There was statistically significant difference between two groups(t =4.29,P ＜ 0.05).The LAVI values in VVS mixed inhibition (VVS-MI),VVS vascular inhibition (VVS-VI) and VVS cardiac inhibition (VVS-CI) were (21.41 ± 2.98) mL/m2,(21.06 ± 2.59) mL/m2 and(21.23 ± 3.22) mL/m2,respectively.There were statistically significant differences between VVS-MI or VVS-VI and the control groups(t =3.27,3.36,all P ＜ 0.05),but there was no statistically significant difference between VVS-CI and control groups(t =1.61,P ＞ 0.05).The cardiothoracic ratio were 0.43 ± 0.07 and 0.46 ± 0.06 in the observation group and the control group,respectively,and there was statistically significant difference between these two groups(t =3.05,P ＜0.05).Conclusions The pathogenesis of VVS is related to the size and function of left heart.The children and adolescents with smaller LAVI and cardiothoracic ratio are more susceptible to VVS.

Objective: To study the application of copy number variation (CNV) analysis based on the raw data of next-generation sequencing (NGS) in diagnosing primary immunodeficiency disease (PID). Methods: One hundred sixty-five patients with suspicious PID were tested by NGS in the Department of Rheumatology and Immunology, Shenzhen Children′s Hospital during September 2014 and Mary 2017. The raw data of the patients who got negative result were further analyzed for the CNV with CNVkit software. The pathogenic CNV were identified in the databases including Resource of Asian Primary Immunodeficiency Diseases (RAPID), Human Gene Mutation Database (HGMD) and ClinVar with the known 344 pathogenic genes of PID. The associated literature from January 2010 to May 2019 were searched in Pubmed, Weip, Wanfang and CNKI database with key words as "primary immunodeficiency disease" "copy number variation" and "next generation sequencing" . Results: Ninety-five out of 165 patients (57.6%) had negative result of the NGS test, among whom the patients with immune dysregulation had the highest negative rate (68.6%, 24/35). CNV analysis found large fragment deletion in 12 patients, within which 7 was X-linked inheritance, 3 was autosomal recessive inheritance, 2 was autosomal dominant inheritance. Partial exon deletion was found in 4 patients while whole gene deletion in 8 patients. According to the review of literature, CNV was reported in 51 pathogenic genes of PID (14.8%, 51/344) , mainly intern deletion (70.6%, 36/51), while autosomal recessive inheritance (56.9%, 29/51) was the most common pattern. Conclusions CNV is not rare in PID. When the phenotype is clear in the patients who have negative NGS test, CNV should be considered.

BACKGROUND:Reports have demonstrated that cytotoxicity produced by ferric oxide (Fe2O3) nanoparticles is associated with cellular lipid peroxidation. Whether Fe2O3 nanoparticles have toxicity to macrophages, and what is the association of toxic mechanism and oxidization?OBJECTIVE: To observe the effects of different concentrations of Fe2O3 nanoparticles on the oxidative damage of macrophages.DESIGN: A controlled observation experiment.SETTING: School of Public Health, Southeast University.MATERIALS: RAW264.7 cells were peritoneal macrophages of mouse and purchased from Shanghai Institute of cells, Chinese Academy of Sciences. Fe2O3 nanoparticles (30 nm) suspension was provided by Department of Biomedical Engineering, Southeast University). Fe2O3 nanoparticle suspension was placed in 60 ℃ water for 10 hours,then in 37 ℃ water overnight. This procedure was repeated 3 times for germicidal treatment. Then, the suspension was packed into small bottles and stored at 4 ℃ for later use. DMEM high glucose culture fluid (Gibco Company,USA); trypsinase (Difco Company, USA, imported); new-bom calf serum(Sijiqing Company, Hangzhou); hydrogen dioxide (H2O2, Gibco Company); Kits for measuring hydrogen dioxide(H2O2), hydroxy radical (·OH), superoxide anion radical (O2·-), lactic acid dehydrogenase, ultramicro ATP enzyme and Coomassie brilliant blue protein levels (Jiancheng Biotechnique Co., Ltd.,Nanjing).METHODS: This experiment was carried out in the laboratory of Department of Labor and Environmental Health, School of Public Health, Dongnan University between March 2006 and July 2006. RAW264.7 cells (Abelson murine leukemia virus-induced tumor) were cultured in DMEM (Gibco Company) containing 100 g/L fetal bovineserum, 100 000 U/L penicillin and 100 mg/L streptomycin in the environment of 5% CO2. Cell growth was observed under an inverted radical in the cells: 1.5×108 L-1 macrophages were inoculated to 24-well plate, 1 mLa well. After the macrophages were cultured for 24 hours in incubation at 37 ℃ in a humidified atmosphere containing 5% CO2. 1.070 0, 0.5350 and 0.2675 g/L Fe2O3 nanoparticles (30 nm) suspension-intervened macrophages were set as Fe2O3 nanoparticle group, and normal saline group was set as control group. Following the intervention of nanoparticles, macrophages were disrupted with Determination of the activities of lactate dehydrogenase (LDH), Na+-K+-ATPase and Ca2+-Mg2+-ATPase: Macrophages in the Fe2O3 nanoparticle group and control group were treated as above. The activities of LDH in culture medium were determined according to the instruction of reagent kit (Nanjing Jiancheng Bioengineering Co., Ltd). And the activities of Na+-K+-ATPase and Ca+-Mg2+-ATPase were also determined according to the instruction of reagent kit (Nanjing Jiancheng Bioengineering Co., Ltd) at low temperature. MAIN OUTCOME MEASURES: ①Effects of different concentrations of Fe2O3 nanoparticles on the production of H2O2, ·OH and O2·- in RAW264.7 cells.②Effects of different concentrations of Fe2O3 nanoparticles on the activities of LDH ,Na+-K+-ATPase and Ca2+-Mg2+-ATPase in RAW264.7 cell culture fluid.RESULTS: ① Level of ·OH free radical in Fe2O3 nanoparticle 0.267 5, 0.535 0, 1.070 0 g/L groups was higher than that in control group, respectively [(0.605±0.066), (0.410±0.080), (0.764±0.051), (0.285±0.057)mkat/g, P ＜ 0.05]; Level of respectively [(9.935±1.159), (8.912±0.131), (13.479±0.752), (5.635±0.475)μkat/g,P ＜ 0.05]; Level of H2O2 in Fe2O3 nanoparticle 1.070 0 g/L group was higher than that in the control group [(14.695±2.815), (2.397±0.399) mmol/L, P ＜increased (P ＜ 0.05). Fe2O3 nanoparticles had effects on the activities of Na+,K+-ATPase and Ca2+,Mg2+-ATPase. With the increase of dose of Fe2O3 nanoparticles, the activities of Na+-K+-ATPase and Ca2+-Mg2+-ATPase were gradually decreased. There were significant differences as compared with control group (P ＜ 0.05)CONCLUSION:Increasing dose of Fe2O3 nanoparticles wouldcause more H2O2,·OH and O2·- free radicals in the cells, increase cell membrane permeability and inhibit the activities of LDH, Na+-K+-ATPase and Ca2+-Mg2+-ATPase.

Objective To investigate the levels of literacy and numeracy in type 2 diabetes patients with poor glycemic status in communities of Shanghai,China,and to evaluate their associations with blood glucose level.Methods A total of 800 type 2 diabetes patients with recent HbA1c≥7.5％ or fasting plasma glucose level ≥10 mmol/L were recruited from 8 communities in Minhang district and Changning district of Shanghai,China,and were interviewed using a structured questionnaire during February 2015 and March 2016.Literacy and numeracy levels of all patients were evaluated using the validated Health Literacy Management Scale (HeLMS) and the 5-item version Diabetes Numeracy Test (DNT-5),respectively.Results The patients included in this study were observed to have higher levels of health literacy,with a median score of HeLMS being 116 [interquartile range (IQR),108-120] and a median correct rate of DNT-5 of 80％ (IQR,60％-100％).Age,educational level and occupation were significantly related with health literacy levels and numeracy.Sex and income were closely related with health literacy levels.HeLMS score was not significantly associated with HbA1c level (P =0.383),while the lower correct rate of DNT-5 was linked with a higher level of HbA1c.The median HbA1c level was 8.3％ (IQR 7.7％-9.4％) in the patients with the lowest tertile of DNT-5 correct rate,significantly higher than 8.2％ (IQR:7.5％-9.2％) in the medium and 8.0％ (IQR:7.5 ％-8.8 ％) in the highest tertile group (P =0.009).Conclusions Diabetes patients with poor glycemic status in communities of Shanghai have high levels of health literacy,which was significantly related with age,sex,educational level,occupation and income.Ability in numeracy may be a more important influence factor than health literacy for glycemic status of diabetes patients.

Atopic diseases used to be considered as complex polygenic diseases with the interaction of environmental factors and genetic susceptibility.In recent years, primary atopic diseases caused by single-gene mutations have been well concerned.This study aims to review the pathogenesis and clinical characteristics of atopic diseases, thus strengthening the understanding.

Objective: To evaluate the role of mitochondrion-dependent apoptosis in reduction of bupivacaine-induced cardiotoxicity by lipid emulsion in rats. Methods: Forty-five healthy adult male Sprague-Dawley rats, weighing 300-350 g, were divided into 3 groups by a random number table method: sham operation group (Sham group, n=5), bupivacaine group (B group, n=20), and lipid emulsion group (L group, n=20). Cardiac arrest was induced by intravenously injecting 0.4% bupivacaine 30 mg/kg over 20 s to establish the cardiotoxicity model.Twenty percent lipid emulsion was intravenously injected in a dose of 5 ml/kg during resuscitation in group L, and normal saline was intravenously injected in a loading dose of 5 ml/kg during resuscitation in group B, followed by a 3-min infusion of 1 ml·kg^-1·min^-1in two groups.The successful resuscitation and survival rate at 120 min of return of spontaneous circulation (ROSC) were recorded.Systolic blood pressure, heart rate, mean arterial pressure, rate-pressure product (RPP) and ratio of RPP at each time point after recovery of spontaneous heart beat to baseline value (RPPh) were recorded every 10 min after ROSC.The time from administration to cardiac arrest (T₀), time from beginning of cardiopulmonary resuscitation to appearance of the first spontaneous heart beat (T_s) and time from beginning of cardiopulmonary resuscitation to appearance of ROSC (T_r) were recorded.Rats were sacrificed at 120 min of ROSC, and left ventricular tissues were obtained for determination of the expression of Bax, Bcl-2, cleaved caspase-9, cleaved caspase-3, cytochrome C (Cyt c) in cytoplasm and mitochondria (by Western blot) and expression of Bax and Bcl-2 mRNA (by real-time polymerase chain reaction) and for examination of myocardial ultrastructure. Results: Compared with Sham group, the expression of Bcl-2 protein and mRNA and mitochondrial Cyt c was significantly down-regulated, and the expression of Bax protein and mRNA, cleaved caspase-9, cleaved caspase-3 and cytoplasmic Cyt c was up-regulated in B group (P<0.05). Compared with B group, the rate of successful resuscitation and survival rate were significantly increased, T_r was shortened, systolic blood pressure, heart rate, RPP and RPPh were increased after ROSC, the expression of Bcl-2 protein and mRNA and mitochondrial Cyt c was up-regulated, the expression of Bax protein and mRNA, cleaved caspase-9, cleaved caspase-3 and cytoplasmic Cyt c was down-regulated (P<0.05), no significant change was found in T_o or T_s (P>0.05), and the pathological changes of myocardium were significantly attenuated in L group. Conclusion The mechanism by which lipid emulsion reduces bupivacaine-induced cardiotoxicity may be related to inhibiting mitochondrion-dependent apoptosis in rats.

OBJECTIVETo study the types of subspecies of Francisella tularensis from China and to investigate the genetic relationships between F. tularensis strains from China and from other countries.

METHODSTen strains of F. tularensis isolated from China were amplified by using typing primers C1/C4 and RD1. On the basis of the lengths of the polymerase chain reaction (PCR) products, it was concluded that these strains of F. tularensis belonged to the same subspecies. At the same time, the fopA, tul4, and 16S rRNA genes of the 10 strains were amplified, and a three-gene based phylogenetic analysis was performed using the Molecular Evolutionary Genetics Analysis software version 4.0.

RESULTSThe 10 strains of F. tularensis from China were all identified as belonging to subspecies holarctica (type B). We found no direct relationship between the genotypes of F. tularensis subsp. holarctica and the geographical area from where they were isolated.

CONCLUSIONThe F. tularensis strains isolated from North China mainly belong to subspecies holarctica (type B). The strains of F. tularensis subsp. holarctica from China may have evolved earlier than those from Europe and North America.