Objective To study on immunity function in infectious mononucleosis (IM) children infected by Epstein-Barr virus (EBV) and its relationship with clinic and prognosis.Methods Serum immunoglobulin was detected by immunoradiometric nephelometry,expressions of C D3+,CD4+,CD8+,CD19+,CD23+ on T-lymphocytes subset in peripheral blood were measured by flow cytometry in 50 IM (IM group)who was in acute and convalescent period,and compared with 50 healthy controls (control group).Results The levels of IgA,IgG,IgM in IM group with acute period were (0.75 ± 0.65),(7.55 ± 2.05),(1.85 ± 0.55)g/L,in IM group with convalescent period were (0.95 ± 0.55),(8.85 ± 2.25),(1.75 ± 0.65) g/L.In control group,those were (1.25 ± 0.75),(10.65 ± 2.55),(1.80 ± 0.50) g/L.IgA and IgG in IM group with acute period were significantly lower than those in IM group with convalescent period and control group (P ＜0.01),but IgM was no significant difference among them (P ＞0.05).The levels of CD3+,CD4+,CD8+,CD4+/CD8+,CD19+,CD23+ in IM group with acute period were 0.6050 ± 0.0850,0.2080 ± 0.0315,0.6520 ± 0.0520,0.45 ± 0.35,0.0580 ± 0.0205,0.0250 ± 0.0135,in IM group with convalescent period were 0.7220 ± 0.0820,0.3575 ± 0.0375,0.3565 ± 0.0565,1.45 ± 0.45,0.1580 ± 0.0280,0.0625 ± 0.0225.In control group,those were 0.7530 ± 0.0830、0.4850 ± 0.0450、0.3275 ± 0.0575 1.48 ± 0.55、0.1850 ± 0.0560、0.0805 ± 0.0175.CD3+,CD4+,CD4+/CD8+,CD19+,CD23+ in IM group with acute period were significantly lower than those in IM group with convalescent period and control group (P ＜ 0.05),but CD8+ was significantly higher than that in IM group with convalescent period and control group (P ＜0.05).Conclusion The abnormality of immunoglobulin and T-lymphocytes subset in children infected by EBV is obvious.

Objective To evaluated the application value of two kinds of mass spectrometer(MS)and Vitek MS system in the i-dentification of routinely isolated bacteria in clinic.Methods 149 strains of common bacteria(including 14 genera and 30 species)i-solated from blood,urine,cerebral spinal fluid,secretion and sputum samples in our hospital from March 2012 to January 2013 were collected and simultaneously identified by 2 kinds of matrix-assisted laser desorption ionization-time of flight mass spectrometer (MALD-TOF-MS).The identification results were compared with those identified by the conventional biochemical identification (Vitek2 compact).The strains with the inconsistent results identified by 3 kinds of method were confirmed by 16S rDNA gene se-quencing.Results Among 149 common bacteria,the correct identification rates of genus and species by the Bruker Biotyper MS were 98% and 96% respectively and which by the Vitek MS system were 97% and 95% respectively.There were no misidentified bacterial strains by these two kinds of MS.Conclusion No statistical difference in the identification results was observed between these two kinds of MS system(P >0.05).Both exhibit excellent identification level and are suitable for the routine laboratory iden-tification of clinical microorganism.

Objective To investigate the relationship between the cerebral circulation time and disease condition and prognosis in patients with acute subarachnoid hemorrhage. Methods DSA were performed to determine the cerebral circulation time (CCT) in 60 patients who had subarachnoid hemorrhage (SAH) within 3 days. The patients were divided into different groups according to the severity of the disease condition,patients with CSC score as 13-15 were assigned as group Ⅰ ,whose CCT was (13.45 ± 1. 89) s. Twenty two patients with GSC score as 3-12 were assigned as group Ⅱ ,whose CCT was (16.79 ± 2. 07) s. There were significant difference between the CCT of the two groups (t =3. 76,P = 0. 001). (2)Twenty-nine patients with Hunt-Hess grade as 1-2 were assigned as group 1,whose CCT was (13.06 ± 1. 83) s. Thirty one patients with Hunt-Hess grade as 3-5 were assigned as group 2, whose CCT was (15. 89 ± 2.06) s. There were significant difference between the CCT of the two groups (t = 3. 39, P =0. 003). (3) Seventeen patients with delayed ischemic damage were assigned as group A, whose CCT was (16. 84 ±1.91) s. Forty three patients without delayed ischemic damage were assigned as group B, whose CCT was (12.94 ± 1. 67) s. There were significant difference between the CCT of the two groups (t = 2. 23, P =0.025). (4)Forty-six patients with GOS score as 4-5 were assigned as group a,whose CCT was (13.07 ±1. 89)s. Fourteen patients with GSC score as 1-3 were assigned as group b,whose CCT was (17.11 ± 1. 71)s. There were significant difference between the CCT of the two groups (t = 3. 27, P = 0.008). Conclusion CCT may reflect the severity of the SAH in early onset patients and has prognostic value.

Purpose: Asthma is a serious inflammatory disease of the respiratory system in which airway smooth muscle cells (ASMCs) play a key role. This study aimed to investigate the expression of SLC26A2 in human ASMCs (HASMCs) and the regulatory mechanism of SLC26A2 in the proliferation and inflammatory factor production of HASMCs. Materials and Methods: We obtained the asthma-associated differential mRNA SLC26A2 by bioinformatics analysis in childhood acute asthma samples. To investigate its role in airway inflammation and airway remodeling, we treated HASMCs with plateletderived growth factor (PDGF) in an in vitro model and determined SLC26A2 expression in cells using western blotting. Cell proliferation was detected by MTT and EdU assays, and cell contractile phenotype marker proteins were measured. Cell migration and production of inflammatory factors were determined by Transwell and ELISA assays. Additionally, the upstream regulatory miRNA and LncRNA of SLC26A2 were identified by bioinformatics, luciferase reporter gene, and RIP analyses. Results: SLC26A2 was significantly upregulated in bioinformatics analysis of pediatric asthma-related sample. PDGF treatment up-regulated SLC26A2 expression in HASMCs, whereas the knockdown of SLC26A2 inhibited PDGF-stimulated proliferation, migration, and production of inflammatory factors, and enhanced the expression of cell contractile phenotype marker proteins in HASMCs. Luciferase reporter and RIP experiments validated that NEAT1 targeted miR-9-5p to regulate SLC26A2, thereby influencing the biological function of PDGF-induced HASMCs. Conclusion These findings indicate that NEAT1-mediated miR-9-5p targeting of SLC26A2 inhibits the PDGF-induced proliferation and production of inflammatory factors in HASMCs. These findings highlight potential therapeutic targets for asthma and airway inflammation.

Purpose: Asthma is a serious inflammatory disease of the respiratory system in which airway smooth muscle cells (ASMCs) play a key role. This study aimed to investigate the expression of SLC26A2 in human ASMCs (HASMCs) and the regulatory mechanism of SLC26A2 in the proliferation and inflammatory factor production of HASMCs. Materials and Methods: We obtained the asthma-associated differential mRNA SLC26A2 by bioinformatics analysis in childhood acute asthma samples. To investigate its role in airway inflammation and airway remodeling, we treated HASMCs with plateletderived growth factor (PDGF) in an in vitro model and determined SLC26A2 expression in cells using western blotting. Cell proliferation was detected by MTT and EdU assays, and cell contractile phenotype marker proteins were measured. Cell migration and production of inflammatory factors were determined by Transwell and ELISA assays. Additionally, the upstream regulatory miRNA and LncRNA of SLC26A2 were identified by bioinformatics, luciferase reporter gene, and RIP analyses. Results: SLC26A2 was significantly upregulated in bioinformatics analysis of pediatric asthma-related sample. PDGF treatment up-regulated SLC26A2 expression in HASMCs, whereas the knockdown of SLC26A2 inhibited PDGF-stimulated proliferation, migration, and production of inflammatory factors, and enhanced the expression of cell contractile phenotype marker proteins in HASMCs. Luciferase reporter and RIP experiments validated that NEAT1 targeted miR-9-5p to regulate SLC26A2, thereby influencing the biological function of PDGF-induced HASMCs. Conclusion These findings indicate that NEAT1-mediated miR-9-5p targeting of SLC26A2 inhibits the PDGF-induced proliferation and production of inflammatory factors in HASMCs. These findings highlight potential therapeutic targets for asthma and airway inflammation.

Objective To analyze the clinical features of nonimmunocompromised patients with allergic bronchopulmonary aspergillosis (ABPA).Methods The clinical data of 11 nonimmunocompromised patients diagnosed as ABPA from June 2010 to December 2015 in Zhejiang Jinhua People's Hospital were retrospectively analyzed.SPSS 18.0 was used for analysis.Results Among 11 patients with ABPA, Five were males and 6 were females, with an average age of (49.3 ±11.0) years.All patients had cough, expectoration and wheezing;cough and tan sputum in 4 cases, bloody sputum in 3 cases, fever in 2 cases and chest pain in 2 cases.In auscultation dry rales were heard in all patients , and limited wet rales were heard in 3 cases.The peripheral blood leukocyte counts were elevated in 5 patients [11.7(10.3-13.5) × 109/L)] and the eosinophils counts were increased in 9 patients [1.79(0.09-7.63) ×109/L].The total IgE was elevated to 3640(1329-9430) IU/mL.Skin prick test was positive ( grade 3 to 5) in 10 cases, Aspergillus fumigatus specific IgE increased to 23.6(1.75-67.30) kU/L in 6 cases, Aspergillus fumigatus specific IgG raised to 83.3(51-126) mg/L in 5 cases.Chest CT showed patchy, punctate exudation in 8 cases, central bronchiectasis in 9 cases, bronchial mucosal plug formation in 4 cases, and atelectasis in 1 case.Mediastinal lymph nodes were found in 2 cases.All 11 patients were treated with glucocorticoid hormone, and 8 patients were also received itraconazole oral solution for treatment.After treatment, the clinical symptoms were improved rapidly.Conclusion Nonimmunocompromised patients with ABPA have no specific clinical manifestations , and often are misdiagnosed as asthma , which is worth the attention of clinicians.

Objective To investigate the effectiveness of T1 mapping on gadolinium-ethoxybenzyl-diethylenetriamine pentaacetic acid (Gd-EOB-DTPA-enhanced) MRI for the assessment of liver function.Methods One hundred and twenty six patients with clinically suspected focal liver lesions and chronic viral hepatitis B underwent MRI were prospectively enrolled.Patients were divided into four subgroups as follows: chronic viral hepatitis B (n=22), liver cirrhosis with Child-Pugh A (n=52), Child-Pugh B(n=41),Child-Pugh C(n=11).Twenty three healthy volunteers with normal liver function were enrolled as control group.Non-enhanced and Gd-EOB-DTPA enhanced MRI of liver were performed in all subjects.Look-Locker sequences with exactly the same scan parameters and geometry position(the level of porta hepatis) were performed pre and post-contrast separately at 5, 10, 15 and 20 minutes after Gd-EOB-DTPA administration.T1 relaxation times and reduction rates of T1 relaxation times[ΔT1(%)]of the liver parenchyma were measured and calculated.One-way ANOVA was used to compare T1 relaxation times and ΔT1(%) for control group, chronic viral hepatitis B group, liver cirrhosis with Child-Pugh A group, Child-Pugh B group,and Child-Pugh C group.ROC curve analysis was performed to compare the diagnostic performance of T1 relaxation times and ΔT1(%) values in discriminating control group + chronic viral hepatitis B group + liver cirrhosis with Child-Pugh A group from Child-Pugh B + C group. Results T1 relaxation times and ΔT1(%)showed significant difference(P<0.05)among control group and different liver function groups. T1 relaxation times and ΔT1(%) of both liver cirrhosis with Child-Pugh B group and Child-Pugh C group were significantly different(P<0.05)in comparison with those of control group,chronic viral hepatitis B group and liver cirrhosis with Child-Pugh A group at all time points.T1 relaxation times of the control group,chronic viral hepatitis B group,liver cirrhosis with Child-Pugh A group and Child-Pugh B group reduced with the scanning time increase,ΔT1(%)raised with the scanning time increase.T1 relaxation times progressively increased from control group to Child-Pugh C group at every time point.ΔT1(%)showed a constant decrease from control group to Child-Pugh C group at all time points.The areas under ROC curve of T1 relaxation time pre and post-contrast at 5,10,15 and 20 minutes for assessment of liver function were 0.817,0.952,0.950,0.946,and 0.949 respectively.The areas under ROC curve of ΔT1(%)post-contrast at 5, 10, 15 and 20 minutes for evaluation of liver function were 0.873, 0.876, 0.885, and 0.898, respectively. Conclusion Gd-EOB-DTPA-enhanced T1 mapping MRI is useful for the evaluation of liver function, and helpful for distinguishing patients with moderate and severe liver damage from normal and mild liver damage.

Objective:To investigate the clinical features, risk factors and prognosis of Clostridium difficile infection/colonization (CDI/CDC) in emergency intensive care unit (EICU) of Ruijin Hospital Affiliated to Shanghai Jiaotong University School of Medicine, then provides theoretical basis for clinical treatment. Methods:A retrospective case-control study was conducted. The data of EICU patients admitted to Ruijin Hospital Affiliated to Shanghai Jiaotong University School of Medicine from June 2016 to June 2020 were collected. Taking the CDI/CDC patients as research objects [ Clostridium difficile (CD) positive group] and the CD negative patients with the same gender and age difference less than 5 years who were admitted to the hospital during the same period as the control (CD negative group). Demographic information, risk factors, prognosis and stool samples were collected. Single factor analysis and binary Logistic regression were used to analyze the CD positive infection rate, risk factors, and hospital death of patients with different clinical characteristics. Results:About 487 patients in EICU were included, 76 cases were taken into CD positive group, CD positive rate was 15.6%, including CDI 11 cases, CDC 65 cases. Among the CD positive group, all of the cases used proton pump inhibitor (PPI), and 75 cases used at least one antibiotic. Seventy-six CD negative patients with or without diarrhea (CD negative group) were included in this study. Among them, 75 patients used PPI and 74 patients used at least one antibiotic. Univariate analysis showed that acute physiology and chronic health evaluation Ⅱ (APACHEⅡ), duration of hospitalization, and carbapenem use were the risk factors for CDI/CDC. There were significant differences in the above indicators between CD positive group and CD negative group [APACHEⅡ: 18.0 (12.2, 25.8) vs. 10.0 (7.0, 14.0), duration of hospitalization (days): 46.0 (30.5, 72.5) vs. 18.5 (9.2, 37.0), proportion of carbapenems: 81.6% (62/76) vs. 64.5% (49/76), all P < 0.05]. Binary Logistic analysis regression analysis showed that APACHEⅡ score [odds ratio ( OR) = 0.802, 95% confidence interval (95% CI) was 0.730-0.882, P < 0.01] and duration of hospitalization ( OR = 0.960, 95% CI was 0.942-0.978, P < 0.01) were independent risk factors for CDI/CDC. There was no difference in overall mortality between the CD positive group and CD negative group [27.6% (21/76) vs. 38.2% (29/76), P = 0.167]. Conclusions:Critically ill patients in EICU routinely use PPI and antibiotics, and the use of antibiotics does not affect the CD positive rate. The independent risk factors of CDI/CDC are the APACHEⅡ score and the duration of hospitalization, but fecal CD positive has no obvious influence on death.