Objective To apply automated enzyme immunoassay workstation instead of manual operation to facilitate detection of Streptococcus pneumoniae(S.pneumoniae) IgG antibodies, so as to improve the detection efficiency.Methods Procedures of the assay were set up on the automated workstation according to the World Health Organization(WHO) Pneumococcal Capsular Polysaccharide Types-pecific IgG Antibody Detection Manual Pn PS ELISA. The number of working station panels was maximized to preset all reagent consumables and more samples to be tested, thereby improving the detection flux and reducing the number of manual interventions. The serum PnG was repeatedly detected to verify the test precision. The WHO S.pneumoniae international calibration serum panel 12/278 was detected to verify the accuracy of the test. To compare the consistency of workstations and manual operation, 16 same serum samples were tested by manual operation and on the workstation meanwhile. Detections of four calibration serum samples were performed on the workstation by double-(WHO standard method) and single-column methods, and the consistency of the results was compared.Results With the layout of 21 plate positions, 24 serum samples could be examined in one program run, requiring only 2 manual interventions. The CV of 32 detection results of serum PnG was lower than 15%. The assay results of 75% of the calibration serum panel in 14 out of 23 serotypes exhibited a percent error of 40% or less compared to the assigned values, and the total accuracy was 80%.The correlation coefficient(Pc) of agreement between workstation and manual test results was 0. 996 7, and the correlation coefficient of agreement between workstation single-and double-column test results was 0. 999 8, both of which showed high agreement.Conclusion The automated enzyme immunoassay workstation has shown high precision, accuracy and large detection throughput, which is labor-saving, and can be applied to the detection of S.pneumoniae antibodies. The results of single-and double-column assay provide experimental basis for single-column detection in place of double-column detection.

Wtth the development of imaging technique,particularly the use of magnetic resonance diffusion weighted imaging,it can easily detect silent stroke lesiom.Both the prevalence and incidence of asyrrotomatic stroke were higher than those of symptomatic stroke.Age,hypertemion and atrial fibrillation are its accepted risk factors.Although silent stroke lacks clinically overt stroke-like symptoms by definition,it often has mild physical and cognitive impairment with careful examination.Furthermore,asymptomatic stroke is also correlated with the occurrence of subsequent symptomatic stroke.decreased cognitive function and dementia.Therefore,clinicians should pay more attention to it,positively control its risk factors and improve its prognosis.

Objective To study the influencing factors and clinical characteristic of High Intensity Focused Ultrasound(HIFU) abhtion analgesic in middle-late stage pancreatic carcinoma.Methods Seventyone cases pancreatic cancer patients underwent HIFU treatment were grouped according to the pain efficacy of related influencing factors and the data was analyzed by single factor correlation analysis.The relationship between influencing factors and analgesic effect were analyzed through the pain outcome score.Results Pain score decreased ≥50％ in advanced pancreatic cancer patients occurred in ＜60 years old,Body mass index (BMI) ＜ 22 kg/m2,tumor location in the pancreatic head and neck,tumor size of 2-5 cm,and the average power of HIFU treatment ＞ 400 W,Ductal adenocarcinoma of the tumor histological type were related to the degree of pain rehef,and the difference was statistically significant (P ＜ 0.05).And fewer complications occurred after HIFU ablation.Conclusion Analysis of the relationship between the different factors and the analgesic effect in advanced pancreatic carcinoma can be used to predict the efficacy of HIFU treatment.

Objective To analyze the dynamic changes in blood lipids and ATP-binding cassette transporter A1 (ABCA1) in peripheral blood monocytes of the patients with type 2 diabetes, and explore the correlations between ABCA1 expression and blood lipids levels and glycometabolism. Methods Human monocytes were isolated from the patients with type 2 diabetes (n=40) and from the healthy individuals (n=40) serve as normal control. ABCA1 was labeled by immune reaction PE fluorescence, then the changes in ABCA1 expression before and after being incubated with the ox-LDL were investigated by flow cytometer. The blood lipid levels, fasting plasma glucose (FPG) and glycosylated hemoglobin (HbA1c) levels in the patients of type 2 diabetes group were determined, and the correlations between ABCA1 and age, blood lipid, and glycometabolic levels were analyzed. Results Plasma levels of triglyceride, non-high density lipoprotein cholesterol (NHDL-C) [low density lipoprotein cholesterol (LDL-C) and very low density lipoprotein cholesterol (VLDL-C)] in the patients of type 2 diabetes group were significantly higher than that in control group (P

Objective To investigate the expression level of monocytes ATP-binding cassette transporter A1(ABCA1) stimulated by oxidized low-density lipoprotein (ox-LDL) in patients with coronary heart disease (CHD) for exploring the mechanism of ABCA1 in the pathogenesis of atherosclerosis (AS). Methods Human monocytes of patients in CHD group (n=42) and normal control group (n=40) were isolated by density gradient centrifugation with separating medium (1.077). ABCA1 was labeled by immune reaction PE fluorescence, then the expression of ABCA1 before and after being incubated with the ox-LDL (30mg/L) for 24 hours was investigated by flow cytometer, and the changes in ABCA1 expression were observed. The differences between the two groups and the correlation between ABCA1 expression and blood lipids were analyzed. Results The high-density lipoprotein cholesterol (HDL-C) and apolipoprotein A1 (apoA1) levels in CHD group (1.15?1.40 and 1.19?0.17, respectively) were significantly lower than that in control group (1.36?0.40 and 1.34?0.22, respectively, P0.05). Conclusions ABCA1 expression in the patients with CHD may be inhibited by high concentration of ox-LDL. The lowered expression of ABCA1 and the abnormal lipids spectrum may decrease the reverse cholesterol transport (RCT), and contribute to the development of AS and CHD.

Transcatheter arterial chemoembolization (TACE) is the first choice of patients with hepatocellular carcinoma (HCC) missed opportunity of exairesis.Angiogenesis is one of the key factors that affect prospective efficacy.Counter-measures against angiogenesis mainly contain complete embolization of tumor blood supply and integration with angiogenesis inhibitors.The angiogenesis after TACE and the corresponding countermeasures were reviewed in this article.

Objective To screen specific mutations on extracellular regions of membrane proteins ( extracellular membrane protein mutations ) in tumor cells and provide the reference information for target searching in cancer precision medicine .Methods Somatic mutations on extracellular regions of membrane proteins of 7042 tumor samples were collected to screen all specific extracellular membrane protein mutations, and the overall distribution of these mutations were obtained by statistical analysis.Genes, gene site and cancer types occured high frequency of extracellular membrane protein mutations were identified.Results 97193 specific extracellular membrane protein mutations were obtained from 4938362 somatic mutations in 7042 tumor samples (30 cancer types), the statistical analysis showed that 4347 genes and 65532 sites were involved in these specific mutations.The study further analyzed five genes (MUC16、LRP1B、CSMD3、RYR2、USH2A), one site (17:37868208) and six cancer types (including colorectal cancer, melanoma, uterine cancer, brain lower grade glioma, lung adenocarcinoma and stomach adenocarcinoma) which occured high frequency of extracellular membrane protein mutations.Conclusion An information library of specific mutations on extracellular regions of membrane proteins was established and the distribution of these specific mutations was obtained which can provide reference information for target detection in targeted cancer therapy and immunological therapy.

Objective To observe the synthesis of melanin and tyrosinase activity of the cultured normal human melanocytes after treated with baicalin and NB-UVB, and to provide theoretical evidence for study on the new therapy method of vitiligo.Methods The normal human menlanocytes cultured in vitro were divided into control group,different concentrations of baicalin groups,different doses of NB-UVB group and baicalin combined NB-UVB group.The proliferation rate of melanocytes was measured by MTT assay,the level of melanin was tested by NaOH pyrolysis,and the tyrosinase activity was measured by dopa oxidization.Results Compared with control group,the proliferation rates in 10-4 mol·L-1 baicalin group and 30 mJ·cm-2 NB-UVB group had no significant difference(P>0.05 ). Compared with control group, the levels of melanin and tyrosinase activities in baicalin group,NB-UVB group and combined group were increased (P<0.05 or P<0.01);compared with baicalin group and NB-UVB group,the level of melanin and tyrosinase activity in combined group were increased(P<0.01). Conclusion Baicalin combined with NB-UVB has better promotion effect on melanin synthesis than used alone.

Objective To investigate the effect of losartan on tubulointerstitial fibrosis of rat unilateral ureteral obstruction(UUO) model, and to study whether the use of large dose could be better exert a superior renoprotective effect than conventional dose. Methods Three days after UUO, rats were randomly assigned to conventional dose and large dose of losartan group, shamoperated group and operation group. Two treatment groups were administered orally with a daily dose of losartan 50 mg/kg or 500 mg/kg by gastric gavage. Sham-operated group and operation group received the same volume of physiological saline. Rats were sacrificed 7, 14, 21 days after obstruction. Daily urinary albumin excretion(UalbV), tail-cuff pressure(TCP), the percentage of renal tubular lesions, fractional interstitial area (INT), macrophage infiltration and the expression of transforming growth factor (TGF)-β1 mRNA were assessed and compared. Results The TCP, UalbV, percentage of tubular lesions and interstitial fibrosis, the number of interstitial macrophages and the expression of TGF-β1 mRNA were significantly increased in operation group as compared with other groups (P<0.05). Furthermore, in comparison with conventional dose, the large dose treatment significantly reduced TCP and UalbV, attenuated interstitial fibrosis and tubular lesions, suppressed macrophages infiltration and the expression of TGF-β1 mRNA. Conclusion The large dose of losartan provides superior renoprotection compared to the treatment with conventional dose in UUO model, which interrupts the positive feedback involved in the vicious cycle between inflammatory cell and Ang Ⅱ.

Purpose To investigate the clinicopathologic changes of the lung epithelial tumor with epithelioid granuloma. Methods E-leven cases of lung malignant tumor with epithelial epithelioid granuloma reaction were studied according to the histological changes of lung epithelial tumor, immunophenotype, acid-fast staining, and tuberculosis PCR test results combined with follow-up data. Results The mean age was 62. 3 years, and male to female ratio was 10∶ 1. The main clinical manifestations displayed a cough, chest pain, fever and hemoptysis or bloody sputum. Nine cases were malignant tumors, tuberculosis or inflammatory lesions was 1 case each in pre-vious surgery. The tumor with epithelioid granuloma formation of the 11 cases displayed in the same site ( mixed) . The histopathologic changes of the lesions showed a epithelioid or typical tuberculous granulomas formation, including 4 cases of adenocarcinoma, 5 cases of squamous cell carcinoma and 2 cases of neuroendocrine tumors. The acid-fast bacilli staining was positive in 3 cases;6 cases were positive for PCR detection of mycobacterium tuberculosis. 5 patients died within 2 years due to various causes. Conclusions The lung epithelial tumors with epithelioid granuloma is more commonly found in the middle-aged, The signs and symptoms of the patients are similar to primary epithelial malignant tumors of the lung . The biological behavior was progressive with poor prognosis. The diagnosis of the lesions depends on pathological examination. It is very important to pay more attention to the pathological examination, especially in lung puncture samples, and the differential diagnosis for a definate diagnosis and treatment.