The diagnostic value of keratin-18 and its fragments in liver diseases has drawn increasingly interests in recent years,but studies on its application in chronic hepatitis B is still few.This paper reviews the circulating levels of keratin-18 fragments M30 and M65 in chronic hepatitis B and its application in the future.

A novel chemiluminescence (CL) system combined with flow injection analysis for the determination of rutin is presented . It is based on the CL reaction of rutin and hexacyanoferrate*# in sodium hydroxide medium. The proposed method has a linear range of 1×10-4g/mL ～ 1×10-6 g/mL with a RSD of 3.7%(5×10-6g/mL,n=11) and a sample throughput of 60 h-1. The method was successfully applied to the determination of rutin in a pharmaceutical preparation.

Objective To investigate the inhibitory effects of docosahexaenoic acid (DHA)and 5-fluorouracil (5-FU)in combination on human gastric cancer cell line AGS in vitro .Methods Human gastric cancer line AGS was treated with different concentrations of DHA and 5-FU alone or in combination.The inhibition of cell proliferation was evaluated by MTT assay.Dose of median (IC50 )of drugs (alone or in combination)and the combination index (CI)were calculated using the median-effect equation and the combination index equation of Chou-Talalay.Flow cytometry was used to detect the cell cycle distribution.The expression of mitochondrial respiratory membrane protein complex in AGS cells was analyzed with Western blot.Results DHA and 5-FU alone or in combination could markedly suppress the proliferation of AGS in significantly time-dependent and dose-dependent manners (P <0.05).IC50 values with DHA or 5-FU administered for 24 h and 48 h were 5 1.60 μg/mL (DHA:24 h),34.82 μg/mL (DHA:48 h),45.90 μg/mL (5-FU:24 h),and 1 6.86 μg/mL (5-FU:48 h), respectively.DHA remarkably strengthened the inhibitory effect of 5-FU and decreased IC50 of 5-FU by 3.56 -2.1 5 folds.The combination of DHA and 5-FU showed synergism.Flow cytometry showed that AGS cells treated with DHA and 5-FU were arrested in G0/G1 phase and the proportion of AGS cells in G0/G1 phase increased compared with that in the control group,DHA group and 5-FU group,while the proportion of the cells in S phase decreased significantly (P < 0.05 ).Western blot showed after treatment with DHA and 5-FU for 48 h,the expression of mitochondrial respiratory membrane protein complex was significantly decreased compared with control group,DHA group and 5-FU group (P <0.05).Conclusion DHA could act synergistically with 5-FU in inhibiting the growth of gastric carcinoma cells,and meanwhile decrease the dose of 5-FU.The mechanism may be associated with cell cycle arrest in G0/G1 phase and interference in the energy metabolism of AGS cells due to inhibition of the expression of mitochondrial oxidative respiratory chain complexes by the two compounds.

Objective To investigate the clinical significance of narrow-band imaging (NBI) system in the diagnosis and treatment of Peutz-Jeghers syndrome (PJS) in children. Methods To retrospectively summarize the clinical data of 15 cases diagnosed with PJS, and compare with 70 cases diagnosed with juvenile polyp. And all of the polyps were further diagnosed with pathological examination and the histological type should be analyzed.The polyps of 15 children with PJS were diagnosed with the white light imaging (WLI) and the NBI system, respectively. The pit patterns of various polyps was observed with NBI. We made a comparison between the sensitivity and speciifcity of NBI and WLI in diagnosis of adenomatous polyps. Result 76 lesions in 15 cases were detected by the WLI and NBI system,including adenomatous polyps (12) and harmatoma (64) which were further diagnosed by pathological examinations.By using the NBI system,69.7% (53/76)PJS polyps (pit patterns)were diagnosed as typeⅠand 27.6%(21/76) PJS polyps were diagnosed as typeⅡorⅢ.By using the NBI system,the sensitivity and speciifcity for diagnosing PJS polyps were 83.3%(10/12)and 98.4%(63/64),which were obviously higher than those by using the WLI system (P<0.05). Conclusion Observation of pit patterns of polyps by the NBI system can help predict the pathological changes of PJS polyps.By using the NBI system,the sensitivity and speciifcity of the diagnosis of adenomatous polyps are higher than those by using the WLI system.It has guiding signiifcance to choose the method to remove a polyp.

Objective To summarize the effectiveness and security of endoscopic removal of foreign bodies of battery in the gastrointestinal tract in children.Methods We analyzed retrospectively the clinical data of 13 patients who swallowed foreign bodies including button cell and cylindrical battery.The 13 patients were treated in our hospital between July 2011 and April 2015,aged 19 months to 12 years.Results A total of 9 cases of foreign bodies in esophagus,including embedded in the first the esophageal stenosis in 4 cases,the second the esophageal stenosis in 3 cases,cardia in 1 case,and 4 cases of foreign body in stomach.We successfully removed 16 foreign bodies of the battery in endoscopy.No serious complications such as perforation,hemorrhaging happened during and after operation.Conclusion It is one relatively safe and effective method of diagnosis and treatment of endoscopic removal of foreign bodies of battery in gastrointestinal tract in children.

ABSTRACT:Objective To investigate the effects of ω-3 polyunsaturated fatty acids on the proliferation of human gastric cancer cell line AGS and the possible mechanisms.Methods Human gastric cancer line AGS and human microvascular epithelial cell HMEC-1 were treated with different concentrations of docosdhexaenoic acid (DHA)and eicosapentaenoic acid (EPA).The inhibition of cell proliferation was evaluated by MTT assay and cell morphology.Flow cytometry was used to detect the cell cycle change.The expressions of mitochondrial respiratory membrane protein complex Ⅰ,Ⅱ and V were analyzed with Western blot.Results DHA and EPA could markedly inhibit the proliferation of AGS in significant time-dependent and concentration-dependent manners (P < 0.05 ). The inhibitory effect of DHA was stronger than that of EPA under the same concentration gradient (P <0.05).The morphological changes of cells were characterized by cell shrinkage and weak adhesion.Flow cytometry showed that AGS cells treated with DHA and EPA were arrested in G0/G1 phase and the proportion of AGS cells in G0/G1 phase increased compared with that of the control group while the proportion of the cells in S phase decreased significantly (P <0.05).Western blot showed after treatment with DHA for 24 h and 48 h,compared with control group,the expressions of mitochondrial respiratory membrane protein complex Ⅰ,Ⅱ and Ⅴ were obviously decreased.The longer effect of DHA,the lower expression of membrane protein complex (P <0.05).DHA had little effect on cell proliferation,morphology or mitochondrial membrane protein complex in HMEC-1 (P >0.05).Conclusion ω-3 PUFAs can selectively inhibit the growth and proliferation of human gastric cancer cell line AGS.These effects may be as-sociated with arresting cell cycle in G0/G1 phase and inhibiting the energy metabolism of AGS cells.

Objective To evaluate value of narrow band imaging(NBI) endoscopy for children with abdominal Henoch?Schonlein purpura ( HSP ) . Methods A total of 46 patients with abdominal HSP were enrolled into the observation group(NBI intervention) from November 2010 to February 2016.Diagnostic rates of white light and NBI endoscopy in abdominal HSP patients, IgA positive rates of targeted biopsies and severe complications were retrospectively analyzed. A total of 25 abdominal HSP patients with no NBI intervention admitted from 2007 to 2009 were randomly enrolled into control group. Data of the control group were compared with those of observation group. Results In observation group, the diagnostic rate under NBI was significantly higher than that under white?light endoscopy[91. 3%(42/46)VS 67. 4%(31/46),χ2=8. 02,P<0. 05]. IgA positive rates of targeted biopsies under NBI was significantly higher than that under white?light endoscopy [ 95. 7%( 88/92 ) VS 69. 6%( 64/92 ) ,χ2 = 21. 79, P<0. 05 ] . Three patients developed such serious complications as digestive hemorrhage as predicted. Compared with control group, abdominal pain and blood stool relief time (10. 96±5. 32 d VS 19. 68±4. 29 d,t=7. 50,P<0. 01), fasting time(10. 37±5. 42 d VS 8. 80± 3. 71 d,t=7. 73,P<0. 01), hospital stay (18. 80±7. 11 d VS 23. 12±4. 36 d, t=3. 16,P<0. 01), time of stool occult blood negative ( 11. 41 ± 6. 30 d VS 19. 12 ± 4. 09 d, t=6. 22, P<0. 01 ) in observation group were significantly shortened. Conclusion NBI endoscopy is valuable for improving the diagnostic accuracy and biopsy accuracy and complication prediction of abdominal Henoch?Schonlein purpura in children.

Objective: This study aimed to examine the number of activated circulating endothelial cells (aCECs) in the peripheral blood of patients with non-small cell lung cancer (NSCLC), and investigate the relationship among aCECs, anti-angiogenic therapy, and prognosis of NSCLC patients. This study also aimed to identify novel predictive markers for anti-angiogenic therapy, and provide basic data and experimental basis for establishing an evaluation system for this therapy. Methods: A total of 142 NSCLC patients were randomly divided into the chemotherapy group (Group 1) and combined therapy group (i.e., chemotherapy plus endostatin, Group 2). The number of aCECs was measured using flow cytometry by detecting the expression status of CD105 and CD146 in the peripheral blood. The correlation between the changes in aCECs and efficacy of drug treatment was statistically analyzed using SPSS software. Results:The number of aCECs in Group 2 increased significantly at 8 and 29 d, two cycles, 50 and 71 d, and four cycles after treatment, respectively (P<0.05). In particular, aCECs amount in cases of progressive disease increased more significantly after combined therapy (P<0.05). A negative correlation was found between the treatment cycle and difference in aCECs amount before and after therapy (r=-0.970, P=0.001). A negative correlation was also observed between the difference in aCECs amount and time to tumor progression (TTP) (r=-0.351, P=0.039). Therefore, the difference in aCECs amount before and after therapy could serve as an important predictor for TTP in NSCLC patients. Conclusion:CD105 and CD146 reflected the activation status of endothelial cells, and responded to the drug treatment. Thus, CD105 and CD146 could act as ideal markers for aCECs. The number of aCECs increased during cancer progression, but significantly decreased after long-term treatment. Therefore, the change in aCECs amount may be a useful marker in predicting the efficacy of anti-angiogenic therapy.

Objectives To explore the correlation between the population characteristics of sero-reactivity with quantitative antibody based-IHA and the transmission parameters,such as epidemic situation,transmission status or infection trend in population.Methods The residents in one endemic administrative village were simultaneously examined by Kato-Katz technique for parasitological stool examination,as well as by immuno-diagnostic technique IHA for detection of IgG antibody against soluble egg antigen for two consecutive years.The results of examination were analyzed and compared on the diagnostic parameters of IHA,the correlation of the changes of positive rates and antibody levels of IHA with the changes of infection trend in population and the distribution of antibody levels between 'the true negative' and 'the true positive'.Results When Kato-Katz technique based on 2 stool samples,each read in 3 thick smears,was used as the reference,the overall sensitivity of IHA was high (from 77.27% to 85.48%) with a relatively poor specificity of lower than 60%,the negative predict value (NPV) was excellent of higher than 94%.The specificity of IHA decreased with the increase of the age in different age-groups of population,showing the highest among the younger less than 15 years old.The distribution trends of positive rates of antibody in different age groups by IHA showed similar to that of egg positive rate detected by Kato-Katz although the positive rates of IHA were higher than these by Kato-Katz,which showed that a higher false positive (from 41.90% to 44.56%) and a certain false negative (from 14.52% to 22.73%)existed in IHA.The positive rate of antibody decreased slowly among the individuals with S.japonicum infection,who received treatment.There was an overlap in the distribution of antibody levels between ' the true negative' and ' the true positive'.Conclusions Under the current schistosomiasis epidemic situation in China,IHA is valuable in the epidemiologic surveys.It should be of further deliberation applying IHA as the screening approaches for identification of target individuals for treatment or determination of the infection rate in community and IHA needs to be combined with the parasitological examination.

Background Trans-arachidonic acids (TAAs) are specific lipid markers of nitrative stress and the major products of NO2·-mediated ismoerization of aracchidonic acid(AA),and they represent a possible new mechanism of NO2·-induced toxicity in ischemic retinopathy.Our previous study demonstrated that high glucose induce nitrative stress response. Objective This study aimed to evaluate the effect of nitrative stress on retinal capillary in diabetic rats by detecting the TAAs with gas chromatography and mass spectrometry(GC/MS).Methods One hundred 2-week-old clean male SD rats were randomly divided into control group and diabetic group.Diabetic rat models were induced by intraperitoneal injection of streptozoticin of 60 mg/kg,and the successful models were identified as the blood glucose level>16.7 mmol/L.The synthesis method was modified in this study andaraehidonic acid w8$utilized as starting material.14E-AA was obtained as a standard sample via expoxidation and deoxidation in a safe and practical pattern.Serum TAAs and AA in diabetic rats were detected by GC/MS in 2,4,8,12 and 16 weeks after injection of streptozoticin.The ratio of peak area of TAAs to AA with selected ion of 79 was estimated and compared with normal rats. Results Fifty rats had been in Diabetic models were established in 50 rats with the successful rate 100%,and the high blood glucose level in model rats retained throughout the experimental duration.GC/MS results showed that the 14E-AA was obtained with the purity of 97.3%,which provided a standard sample to nitrative stress-related research as a premise. No significant differences were found in serum TAAs/AA values at 2 weeks and 4 weeks between model group and control group (t =-0. 376, t =-0. 642,P>0. 05). However,serum TAAs/AA values in at 8,12 and 16 weeks after streptozoticin injection were considerably elevated in comparison with those of control group (0. 0832 vs 0. 1042,0. 0910 vs 0. 1568, 0. 1100 vs 0. 1895;t=-36.409,t=-166.714,t=-148.212,P<0. 05). Conclusion Elevation of serum TAAs/AA is associated with diabetic duration,implying that damage of nitrative stress to retinal capillary is a parallel procedure to diabetic course.Establishment of GC/MS detection system offers a new evaluating indicator in the research on microvascular ischemic disease and could be implemented in clinical testing.