Choriocarcinoma is a highly malignant trophoblastic tumor and is propagated by blood -borne.The diagnosis of choriocarcinoma is based on its histopathologic appearance and a high serum level of hu -man chorionic gonadotropin(HCG).To report a case on multiple organ metastasis of choriocarcinoma ,we retro-spectively analyzed the treatment by reviewing the interrelated articles to analyse the clinical characteristics and treatment of choriocarcinoma .

Objective To establish a detection method of Salmonella in laboratory animals based on a high-throughput sequencing technology, and to apply it in detection of Salmonella in laboratory animals.Methods DNA samples were extracted from mouse feces.Universal primers for 16S rDNA, 23S rDNA, 16S-23S rDNA, 23S-5S rDNA region, gyrB preferred area were designed, respectively.Each primer was tested and analyzed to determine the best amplification conditions and build a database.Forty-two samples of Salmonella were assayed by Illumina high-throughput sequencing technology and evaluated the specificity and stability of this method.Results The species preferred region of Salmonella was gyrB gene region.The primers for gyrB gene were FP5 ’-AACCACCGCAATCAGACCTT3‘ and FP5 ’-AGCCACGAAACCTTCACYA-3’.The primers were optimized and determined, through a high-throughput sequencing, and the sequence analysis detected very small amount of Salmonella in the 42 samples, indicating that this detection method is stable, highly sensitive, and the limit of detection reached to 0-102 CFU.Conclusions We have established a complete detection system for detection of Salmonella in laboratory animals based on a high-throughput sequencing technology, This system can detect trace amounts of Salmonella in laboratory animals, and this detection method is stable and highly sensitive, which can be also used in detection of other kinds of pathogenic microorganism in laboratory animals.

Background and purpose:Recently, studies showed that non-steroidal anti-inlfammatory drugs (NSAIDs) could reduce the incidence of cancer. Whether ibuprofen could inhibit the growth of hepatocellular carcinoma cells had not been reported yet. In the current study, we investigated the effects of ibuprofen on hepatoma carcinoma BEL-7402 cells and the relevant mechanisms. Methods: Hepatocellular carcinoma BEL-7402 cells were randomly divided into 7 groups:the control group and the ibuprofen groups (0.1, 0.5, 1.0, 2.0, 3.0 and 4.0 mmol/L). The effect of ibu-profen on BEL-7402 HCC cells was measured by MTT method, the cell cycles were analyzed by flow cytometry (FCM), cell vitality and apoptosis were determined by cell analyzer. PCNA, Cyclin D1, Bcl-2 and COX-2 protein levels were examined by Western blot, and the expressions of prostaglandin E2 (PGE2) were measured by ELISA. Results:After the exposure to ibuprofen, the suppression ratio of BEL-7402 cells was increased (P<0.05). BEL-7402 cell vitality was decreased by degrees significantly (P<0.05), early apoptosis of BEL-7402 cells was increased (P<0.05), and the G0/Gl phase ratio was increased significantly compared with control group (P<0.05). Ibuprofen effectively decreased PCNA, Cyclin D1, Bcl-2 and COX-2 expressions in BEL-7402 cells (P<0.05), and decreased PGE2 protein expression in cell culture supernatants sig-nificantly (P<0.05). Conclusion:Ibuprofen is effective for inhibiting the proliferations, increasing apoptosis and blocking cell cycles of BEL-7402 HCC cells. The anti-tumor mechanisms of ibuprofen may be related with the inhibition of COX-2 and PGE2 expressions.

Objective To investigate the relationship between the expression of trannsient receptor potential vanilloid 1 (TRPV1) and the severity of airway remodeling in elderly patients with chronic obstructive pulmonary disease(COPD).Methods According to airflow obstruction severity,totally 100 cases of elderly patients with COPD were divided into chronic obstructive pulmonary disease Global Initiative(gold) grade 1 in 23 cases,24 cases of grade GOLD2,GOLD3 27 cases,GOLD4 26 cases,respectively.The TRPV1 concentrations in induced sputum supernatant and serum from each level of elderly patients with COPD as well as in 50 cases of healthy old people were analyzed.Results TRPV1 concentrations in serum and induced sputum in the COPD group was significantly increased compared with the healthy elderly group[(9.94±2.91)μg/L vs.(3.68±0.46)μg/L,(3.29± 1.32)μg/L vs.(0.70 ± 0.30)μg/L] (P ＜ 0.01).The serum and induced sputum TRPV1 concentrations in the mutual pairwise comparison between the elderly COPD patients with all levels had statistical difference (P ＜ 0.01).Conclusion The expression of TRPV1 protein become increased with the severity of airway remodeling in elderly patients with chronic obstructive pulmonary disease.

Nicotinamide adenine dinucleotide phosphate oxidase ( NOXs) contributes to the production of reactive oxygen species ( ROS) in liver fibrosis, resulting in the activation of endoplas-mic reticulum stress ( ERS ) and IRE1α-XBP1 signaling path-way. ROS is a series of oxygen metabolites and its derivatives, produced by the single electron reduction of molecular oxygen ( O2 ) , including superoxide anion ( O2- ) , hydroxyl radical (-OH) , hydrogen peroxide ( H2 O2 ) , hypochlorite ion ( OCl-) and so on. They can interact with a large number of molecules, including small inorganic molecules, proteins, lipids, carbohy-drates and nucleic acids, resulting in lipid peroxidation of cell damaging molecules. And as a second messenger, ROS can also affect the proliferation and activation of HSC in liver fibrosis, and induce the hepatocyte apoptosis through a variety of cellular signal transduction. Here we review the current status of the study on the mechanism of NOXs in liver fibrosis.

Liver fibrosis is a major cause of morbidity and mor-tality worldwide which poses a great threat to public health. Con-siderable evidence suggests that the immune system is closely re-lated to the development of hepatic fibrosis especially the dendrit-ic cells ( DCs) . In recent years, many studies have showed that DCs play a key role in regulating the immune function of liver, which not only mediate the activation of the immune system and inflammation reaction in liver, but influence the occurrence and development of liver fibrosis. Further study has found that DCs exert different effects on liver fibrosis at different stages of the disease, and it exerts anti-fibrosis in early stages and recession period, while plays opposite effect in the middle of the disease. This article reviews the research progress of the role of DCs in liver fibrosis and discusses the underlying mechanisms of DCs in regulation of liver fibrosis, which may provide references for bas-ic and clinical studies of liver fibrosis.

Liver sinusoidal endothelial cells (LSECs) are the highest proportion of liver non-parenchymal cells with fenestrae structure and high endocytic ability maintaining liver homeostasis and playing an indispensable role in the physiology and patholo-gy of the liver.LSECs are involved in the regulation of patholog-ical process in nonalcoholic fatty liver disease(NAFLD),alco-holic fatty liver(AFL),hepatocellular carcinoma(HCC),liverregeneration and liver fibrosis mainly via antiinflammation,endocytosis,secretion of angiocrine signals and maintaining thequiescence phenotype of HSCs.This review highlights the physiological function of LSECs and the different roles in different pathological conditions,which aims to provide a new perspectivefor the treatment of liver diseases through targeting LSECs.

Objective To study the potential use of the urinary beta-trace protein ( βTP) for diagnosis of type 2 diabetic renal injury.Methods 174 patients with type 2 diabetic mellitus (T2DM) were classified into 2 groups according to the ratio of urinary albumin to creatinine (Alb/Cr):diabetes without renal injury group (group A) and diabetes with renal injury group (group B).70 healthy subjects served as normal control group ( group C).The level of urinary βTP and αl microglobulin (α1MG) was measured by latex particle enhanced immunoturbidimetry assay.The urinary Alb and Cr were determined by nephelometry and Jaffe method respectively.The level of uriuary βTP among all groups was compared and ROC curve analysis was performed.The relevant analysis on urinary βTP,urinary α1MG and other related indexes was made.Results The median level of urinary βTP/Cr in group B was 9.1mg/g Cr,significantly higher than 3.1mg/g Cr of group A and 2.0mg/g Cr of group C.The difference had statistical significance ( H =45.5,P ＜ 0.01).The other indexes ( Alb/Cr,α1MG/Cr,SCr) were all higher in group B than in the other 2 groups ( H =110.9,38.3,11.4 respectively,P ＜0.01).The relevant analysis showed that urinary βTP/Cr was positively correlated with urinary α1MG/Cr (r =0.894,P ＜ 0.01),SCr (r =0.367,P ＜ 0.05 ),HbA(J) C ( r =0.242,P ＜ 0.05 ),systolic pressure ( r =0.162,P ＜0.05 ),and the course of the disease ( r =0.251,P ＜ 0.05 ).No correlation was found between urinary βTP/Cr and diastolic pressure,fasting blood glucose(FBG) or BMI.ROC curve analysis showed the area under the curve (AUC) was 0.86 (95％CI,0.78-0.93)for urinary βTP/Cr and 0.76 (95％ CI,0.67-0.85) for urinary α1MG/Cr.The best cut-off value of urinary βTP/Cr and α1MG/Cr was 4.1mg/g Cr vs 10.9mg/g Cr,the sensitivity was 68.5％ vs 59.7％,and the specificity was 89.8％ vs 80.3％.The difference had statistical significance (P ＜ 0.05).Conclusions Urinary βTP has better diagnostic value for type 2 diabetic patients with renal injury than urinary α1MG.It can sensitively reflect renal tubular injury and can be used as a novel available biomarker to evaluate the renal tubular injury in clinic.

Objective To establish a flow cytometric method for the detection of alkaline phosphatase (ALP) expression on the membrane of neutrophils (mNAP).Methods EDTA-K2 anticoagulant venous bloods were collected.Expression of mNAP in peripheral blood was measured by flow cytometry using a phycoerythrin (PE)-labeled anti-ALP monoclonal antibody.BD QuantiBRITE PE was used to generate a calibration curve for PE fluorescence and ratios of PE to anti-ALP antibody and detect the bound ALP antibodies per cell (antibodies bound per cell,AB/c).Preanalytical handling including anticoagulants (EDTA-K2,citrate,and heparin),storage temperature,storage time,and plasma ALP were optimized and measured the precision.The expression levels of mNAP from 481 healthy controls were measured to establish a clinical reference range.The mNAP levels of 84 patients with severe infection and local infection,39 patients with virus infection were determined by this method.Results For preanalytical handling,application of PBS washing can effectively eliminate the interference of plasma ALP.The mNAP levels were not influenced by different anticoagulants and storage conditions (stored for 12 h either at room temperature or 4 ℃).This method had preferable reproducibility (CV in batch were 2.01％-3.33％,average 2.67％ ; CV between batch were 5.80％-6.00％,average 5.90％).The median (quartiles) of mNAP in health controls were 1 758 (1 378-2 310) AB / c for men and 1 897 (1 369-3 249) AB / c for women.There was no significant difference between genders (U =27 140,P =0.243 8).The clinical reference ranges (2.5 percentile to 97.5 percentile) of mALP was 920.5-3 493.0AB / c.The expression levels of mNAP of patients with bacterial infections (13 532,9 756-16 869 AB / c) were significantly higher than those of patients with virus infection(1 143,536-2 012 AB / c) and healthy controls (1879,1399-2497 AB / c) (H=221.5,P＜0.01).Conclusion BD QuantiBRITE PE kit can be used to standardize flow cytometer settings and quantitatively detect molecules per cell.The flow cytometric method for detection of mNAP has important clinical application for differentiating bacterial and virus infection.

Objective To investigate the clinical significance of apoptosis of B cells in the peripheral blood of patients with rheumatoid arthritis (RA).Methods The proportions of B cells in the peripheral blood (PB) of 51 active and 30 remission patients with RA and 80 healthy controls were detected by flow cytometry.B cells in the PB of 10 active,10 remission and 10 healthy individuals were isolated by MACS.The apoptosis of cultured B cells,which were collected at 24,48,72,96 h respectively,were assessed by flow cytometry.ANOVA,t test and,Spearman correlation analysis were used for statistical analysis.Results The proportions of B cells marked as CD19 and CD22 in the PB of active and remission patients with RA and healthy controls were (26±11)％,(12±8)％,(10±7)％,(26±10)％,(12±8)％,(11±5)％ respectively.The proportions of B cells in the PB of active patients was significantly higher than that of remission patients and healthy controls (P＜0.01).There was positive correlation between B cell proportion in the PB of active patients and DAS 28 and IgG level.The proportion of apoptosis of B cells in the PB with active patients was less than healthy controls.Conclusion The pathway of apoptosis of B cells in the PB of active patients is inhibited,which could increase B cell proportion.Moreover,the high proportion of B cells in the PB of active patients is closely related to disease activity.