Objective:To study the correlation between chronic urticaria and Helicobacter pylori infection,and to explore the significance of HP detection in the diagnosis and treatment of chronic urticaria. Methods: Totally 420 cases of chronic urticaria,who were treated in outpatient department from April 2014 to July 2015,and 450 cases of healthy physical people were selected randomly as healthy control group in the same period,then the serum HP unease antibody was detected by colloidal gold method,the positive rate of two groups patients with HP was analysed. Meanwhile 162 chronic urticaria patients with positive HP were divided into experimental group with 88 cases and control group with 74 cases. The patients in the control group were treated with conventional treatment,while the experimental group were treated with triple therapy based on the treatment of control group,and the clinical efficacy of different ther-apeutic methods was analysed in the chronic urticaria patients with positive HP. Results: The positive rate of HP in chronic urticaria group was 38. 6%, and the positive rate of HP in healthy control group was 14. 4%, the difference was statistically significant ( P<0. 05). The effective rate of clinical efficacy in the experimental group was significantly higher than the control group(P<0. 05). Con-clusion:There is close correlation between chronic urticaria and HP infection,HP detection has important clinical significance for the diagnosis and treatment of chronic urticaria.

Objective Using chemically synthesized small interfering RNA (siRNA) transfected HepG2.2.15 cells to construct a cell model in interfering hepatitis B virus (HBV) X gene, studying the inhibi-tion of HBV replication and antigen expression in vitro. Methods After transfection of HepG2.2.15 cell for 24 h, 48 h, 72 h, detecting the cell supernatant of HBsAg and HBeAg by chemiluminescence immunoassay, the cell supernatant HBxAg protein by ELISA , the HBx mRNA relative expression of transfected cell was detected by fluorescence quantitative polymerase chain reaction (PCR), the ability of cell proliferation was detected by CCK-8 assay. Results After HBx-siRNA transfected HepG2.2.15 cells, cell proliferation ability was inhibited. The cell of HBx mRNA and the cell supernatant of HBxAg expression decreased (P < 0.05); at the same time it in-hibited the expression of HBsAg and HBeAg. The suppressed peak and the inhibition rate were 66% and 58%respectively at 72 h. The fluorescence quantitative PCR confirmed that expression of HBV DNA in the super-natant was decreased. Conclusion The HepG2.2.15 cell interference model of HBV X gene has been success-fully constructed, which has an effect of inhibiting proliferation of HepG2.2.15 cells and replication and expres-sion of HBV gene in vitro.

ObjectiveTo observe the changes of uric acid level and lipid spectrum, and activities lipid metabolism related enzyme as well as uric acid metabolism-related enzymes on quail abdominal obesity model and then investigate the underlying mechanism of abdominal obesity combined with blood lipid spectrum disorder and hyperuricemia model. MethodsThe quail model of abdominal obesity was induced by feeding with high-fat diet.The body weight and abdominal fat content were measured and the abdominal fat index was calculated. The levels of total cholesterol (TC), high density lipoprotein cholesterol, low density lipoprotein cholesterol (LDL-C), triglyceride (TG), glucose, and uric acid in serum were determined. The changes of adenosine deaminase (ADA),xanthine oxidase (XOD), lipoprotein lipase (LPL), hepatic lipase (HL), and total esterase (TE) activities were also determined. ResultsOn the 7th day, the body weight, abdominal fat content, and abdominal fat index were not significantly different between the model group and control group ( all P ＞0.05 ). On the 14th day, the body weight was not significantly different between these two groups ( P ＞ 0.05 ), while the abdominal fat content [(3.91 ±2. 13) vs. (2.40±0.96) g, P=0.0468] and abdominal fat index (1.92％ ±0.97％ vs. 1.22％ ±0.45％, P =0.0447) were significantly higher in the model group. On the 7th and 14th day, the levels ofTC (P =0.0042 and P =0.0006, respectively), LDL-C ( P =0.0045 and P =0.0010, respectively) in the model group were significantly higher than those in control group, while the level of TG significantly decreased ( P =0.0006 and P =0.0024, respectively ). On the 7th day, compare with the control group, the activities of ADA ( P =0.0237 )and XOD (P =0.0142) in the model group significantly increased, while the activities of LPL, HL, and TE had no significant changes. On the 14th day, compared with the control group, the activities of ADA ( P =0.0060),XOD ( P =0.0071 ), and LPL ( P =0.0419) in the model group significantly increased, while the activities of HL and TE had no significant changes. ConclusionsHigh-fat diet can induce disorders in blood lipid profiles in quail model, but also may incur abdominal obesity and multiple metabolic disorders. Changes in the activities of uric acid and lipid metabolism related enzymes may be the underlying mechanism of disorders in blood lipid profile and its associated hyperuricemia and abdominal accumulation.

Objective To investigate the diagnostic significance of thin layer reconstruction with spiral CT on the pulmonary hamartoma. Methods Accepted both routine CT examination and thin layer construction,2 1 pulmonary hamartoma cases confirmed by pathology were analyzed retrospectively.The margin and inner features of the lesions were observed and recorded.Significant analysis was performed by using SPSS17.0 Pearson chi-square test and Fisher exact test,with P<0.05 as the significant difference criterion.Results Comparison of the display rates by routine CT and thin layer reconstruction:①the same display rate of lobulation were 57.1%(12/21);②the same display rate of calcification were 42.9% (9/21);③the display rates of fat density were 14.3%(3/21)by routine CT and 42.9% (9/21)by thin layer reconstruction.The difference was statistically significant (χ2=4.200,P<0.05);④the display rates of blood vessel throughing were 14.3%(3/21)by routine CT and 47.6% (10/21)by thin layer reconstruction.The difference was statistically significant (χ2=5.459,P<0.05).Conclusion Displaying the inner features of pulmonary hamartoma better than routine CT,the thin layer reconstruction can improve the diagnostic accuracy significantly.

Objective To explore the clinical value of the dual-low-dose with low tube voltage for head and neck CTA. Methods One hundred and sixty patients who were clinically suspected head and neck vascular disease underwent CTA procedure were propective selected, and whose body mass index (BMI) was also lower than 25 kg/m2. Forty cases were randomly selected as conventional group(120 kV,150 mAs, iodine 320 mg/ml), the other 120 cases were as the low dose group. The low dose group divided into three subgroups according to the random number table method, which were low iodine group (37 cases;120 kV,150 mAs, iodine 270 mg/ml), low tube voltage group (42 cases;100 kV,150 mAs, iodine 320 mg/ml) and low iodine and tube voltage group (41 cases;100 kV,150 mAs, iodine 270 mg/ml). The carotid bifurcated CT value, standard deviation (SD), signal-to-noise ratio (SNR), iodine intake and effective radiation dose (ED) of the four groups were recorded,all data undertook statistical analysis useing one-way ANOVA. Meanwhile, the subjective image quality score was applied to evaluate the image quality, and the differences among groups were compared by Wilcoxon signed ranks test. Results The image quality score were (2.85±0.19),(2.33 ± 0.34),(2.26 ± 0.32),(2.87 ± 0.22) in the four groups, and there was no statistical difference between groups(P>0.05).The carotid bifurcated CT value were respectively (380±30),(314±27),(514±52) and (425±28) HU in conventional, low iodine, low tube voltage and dual-low-dose groups, and the iodine intake were (18.85±2.10), (15.75±1.78), (18.53±1.98), (15.62±1.92) g, the ED of the four groups were (1.74±0.14), (1.73± 0.11), (1.32 ± 0.08) and (1.35 ± 0.09) mSv, the difference were all statistically significant (P<0.01). Furthermore, the iodine intake and the effective radiation dose in dual-low-dose group were significantly lower than the conventational group. Conclusions Head-and-neck CTA with dual-low-dose scan can provide same quality images as using 100 kV and high dose iodine contrast agent, and which also significantly reduced the ED and iodine intake greatly. Thus, this scanning program has great clinical value.

Objective Study of the rare hepatitis B virus patients model cases which both the hepatitis B surface antigen (HBsAg) and hepatitis B surface antibody (HBsAb) were positive, and discussion of its cause and the clinical value. Methods serum markers of hepatitis B virus (HBV-M) was detected by microparticle enzyme immunoassay chemiluminescence (MEIA); HBV-DNA was detected by fluores--cence quantitative PCR method, alanine aminotransferase and aspartate aminotransferase were detected by colorimetric, and all the data were combined with the clinical features of patients for comprehensive analysis. Results 1) HBsAg and HBsAb double positive detection rate was 2.3％ in 15600 cases of hepatitis B patients, there was no significant difference in the positive rate of different sex groups and different age groups (P> 0.05); 2) HBsAg, HBsAb, HBeAb, HBcAb positive mode accounted for the highest proportion in all HBsAg and HBsAb double positive cases, the percentage was 57.9％; 3) the positive rate of HBV DNA in hepatitis B patients with HBeAg positive rate were higher than HBeAg negative group in all HBsAg and HBsAb double positive cases; and the incident rate of double variation nt 1762 A-T/nt 1764 G-A in HBeAg negative group was higher than that in HBeAg positive group. There were significant differences between two groups (P < 0.05); 4) the detection rate of HBsAg and HBsAb double positive in patients with chronic hepatitis B were higher than those of asymptomatic carriers, liver cirrhosis, hepatitis B and hepatitis B hepatocellular carcinoma (P < 0.05). Conclusion The phenomenon of both positive HBsAg and HBsAb does not indicate the elimination of the hepatitis B virus infection, but it is likely suggested the mutation of the virus. It is necessary to prompt clinical detection of serum HBV DNA, so as to determine whether the virus in patients is in the replication status, and it also provide some help for clinical individualized treatment of HBsAg and HBsAb double positive patients.

Objective To measure the number of lymphocytes, B lymphocytes, CD5+B lymphocytes and level of IL-10 in peripheral blood of patients with systemic lupus erythematosus (SLE), and analyze their effects in the disease. Methods In this study, 84 cases of patients with SLE were randomly selected and evaluated according to the activity index (SLEDAI). These cases were divided into low activity group (SLEDAI<9) and high activity group (SLEDAI≥9). Ten healthy individuals were selected as the control group at the same time. The number of peripheral blood lymphocytes, B lymphocytes, CD5 + B lymphocytes, erythrocyte sedimentation rate (ESR), C3, C4 and interleukin (IL)-10 levels in serum were measured respectively and the correlation between the above indexes and SLEDAI and complement levels were analyzed. Pair-wise comparison of means of groups was conducted with one-way ANOVA. Comparison between the two groups was conducted by LSD-t test. Correlations between variables were carried out using Spearman's rank correlation test. Results The total number of lymphocytes in SLE group was lower than that in normal control group ( F=7.216, P<0.001); The number of CD19+ B lymphocytes in SLE group was higher than that in normal control group (F=3.589, P=0.036). The number of CD5+B lymphocytes of peripheral blood [(2.5±0.6)%] in patients with systemic lupus erythematosus was significantly lower than that in the normal control group [(3.2 ±0.8)%], but the difference was not statistically significant (t=3.412, P=0.698). The number of CD5+B lymphocytes in the high activity group was significantly lower than that in the low activity group (t=7.365, P=0.027)and the normal control group (t=5.649, P=0.002). The number of CD5+ B lymphocytes was negatively correlated with SLEDAI score (r=-0.692, P=0.001) and positively associated with the level of complement 3 (r=0.305, P=0.038), but not with complement 4 and ESR (P>0.05). In addition, the level of serum IL-10 in whether the low activity group (t=1.935, P=0.031) or the high activity group (t=3.048, P=0.012) was all higher than the normal control group. The level of serum IL-10 in patients with systemic lupus erythematosus was positively associated with SLEDAI score (r=0.425, P=0.024) and ESR (r=0.479, P=0.008), but was negatively correlated with complement 4 (r=-0.359, P=0.031). Conclusion The total number of lymphocytes in patients with SLE decreases significantly, while B lymphocytes increases significantly. The number of CD5+ B lymphocytes and the serum IL-10 level are also changed. It maybe related to the patient's inflammatory environment, and the number of CD5+B lymphocytes and the serum IL-10 level may be associated with disease activity.

Objective To investigate the imaging features of primary Rosa-i Dorfman disease (RDD)in the central nervous system and to increase the understanding of the disease.Methods The MRI findings of 5 cases with primary RDD of the central nervous system were analyzed retrospectively,and the related literatures were reviewed.Results Four cases located in the cranium,1 case located in the spinal cord,and 5 tumors were attached to the brain (ridge)membrane.The tumor was equal and low signal on T1 WI,and equal or slightly high signal on T2 WI.Obvious enhancement could be seen on enhance study,and obvious enhancementwas visible in adjacent brain (ridge)membrane,in which 1 case involved the skull,with thickening and strengthening of the skull.Tumors were attached to the meninges in a wide range,the local meninges of 3 cases were penetrated by tumor.Conclusion If young and middle-aged males have no obvious specific clinical manifestations,the images of MRI are single or multiple lesions that are closely related to the brain (ridge)membrane in larger extent and easily penetrate the brain (ridge)membrane,the possibility of RDD should be considered.

Objective To investigate the potential prognostic factors in patients with hepatocellular carcinoma (HCC) complicate by portal vein tumor thrombosis (PVTT) who are treated with transcatheter arterial chemoembolization (TACE). Methods The complete clinical data of a total of 46 patients with HCC complicate by PVTT, who were treated with TACE during the period from January 2010 to March 2016, were retrospectively analyzed. Clinical material database was established. Kaplan-Meier test was adopted to analyze the survival rate and the COX risk ratio model was used to screen out the independent prognostic factors. Life table method was employed to calculate the survival time. Results The 6-, 12-, 18- and 24-month survival rates were 51. 2％, 28. 9％, 23. 4％ and 10. 2％, respectively. The median survival time was 6. 7 months. According to mRECIST standard, complete remission (CR) was obtained in one patient (2. 1％), partial remission (PR) in 11 patients (23. 9％), stable disease (SD) in 16 patients (34. 8％) and progress disease (PD) in 18 patients (39. 2％). Multivariate analysis indicated that local tumor response, ascites, cholinesterase, and arteriovenous fistula were the independent factors affecting the prognosis. Conclusion The independent prognostic factors that affect the survival time of HCC patient include local tumor response, ascites, cholinesterase and arteriovenous fistula. (J Intervent Radiol, 2018, 27: 266-271)

Objective: To explore and clarify the correlation between short-term aggressive intrasegmental recurrence (AIR) and functional magnetic resonance imaging after radiofrequency ablation of hepatocellular carcinoma (HCC). Methods: A retrospective analysis of 1 262 patients with HCC who underwent radiofrequency ablation (RFA) in our hospital from January 2012 to June 2018, all patients were confirmed by pathology as HCC, of which 30 patients were found to have AIR during radiographic follow-up within 3 months after surgery, another 35 patients with disease progression who were controlled in a short period of time were randomly selected as the control group. All the enrolled patients underwent dynamic enhanced magnetic resonance imaging (DCE-MRI) and diffusion weighted imaging (DWI) scanning before surgery, and the differences in clinical data, lesion location, and functional magnetic resonance parameters between the two groups were compared, and their correlation with AIR after RFA was analyzed. Chi-square test, t test and Pearson test were used. Results: The lesions in the AIR group were significantly more in the Ⅰand Ⅳsegments than that in the control group (P<0.05), and there was no significant difference in other liver segments (P>0.05). There was no significant difference in the lesion morphology between the two groups (P>0.05), and there was a significant difference in the early enhancement pattern of the lesions (P<0.05), and the early arterial enhancement rate and apparent diffusion coefficient (ADC) value of the AIR group were significantly lower than the control group (P<0.05). Further correlation analysis found that early enhancement of the arterial artery, early arterial enhancement rate, ADC value and lesion location were associated with AIR and were positively correlated, r values were 0.455, 0.633, 0.518, 0.375 and 0.287 (P<0.05). Conclusion The short-term AIR and functional imaging parameters (arterial early enhancement, early arterial enhancement rate, ADC value) and the liver segment (Ⅰ and Ⅳ) were highly correlated with radiofrequency ablation.