Objective To investigate the serum CEA,CA199,CA242,CA724,AFP levels as tumor markers for diagnosis and prognosis of gastric cancer.Methods The serum concentrations of CEA,CA199,CA724,AFP were detected in 108 patients with gastric cancer by ECLIA (electrochemiluminescence immunoassay) method.CA242 by ELISA method.The survival analysis was performed by the Kaplan-Meier method,Cox' s proportional hazards model was used for multivariate analysis of prognosis.Results Using healthy subjects group as control,the ROC-AUC of CEA,CA199,CA242,CA724 were 0.735,0.714,0.598,0.576.The sensitivity,specificity and Youden index were 40.2 ％,97.7 ％,0.379; 43.0 ％,91.3 ％,0.343;35.2 ％,94.8 ％,0.300 and 31.3 ％,95.3 ％,0.266,respectively.For combined detection of CEA,CA199,CA242,CA724,the sensitivity,specificity and Youden Index were 76.8 ％,82.3 ％,0.585.The levels of CEA,CA724 were closely related to lymph node status (both P ＜ 0.05).The concentrations of CEA,CA199,CA242 were significantly related to vascular embolization,distant metastases and ascites (all P ＜ 0.05).The patients of lump and catheter had significantly higher of AFP compared with patients of invasion and anabrosis (P ＜ 0.05).In gastric cancer patients,the size of the primary tumors was closely related to the preoperative serum levels of CEA,AFP,CA724 (P ＜ 0.05).During follow-up,there were 34 cases of death in 59 patients,and the median survival time were 18.1,10.9 months for the patients with CEA negative and positive (P ＜ 0.005).Conclusions Combing detection of CEA,CA199,CA242,CA72 can improve sensitivity of gastric cancer,and play an important role in forecasting the recurrence,metastasis,curing and prognosis evaluation.CEA is an important predictor of recurrence and prognosis of gastric cancer.

Objective:To study the effect of injection bovine retinal soluble antigen (S-Ag)into anterior chamber(AC)in inducing immunological tolerance.Methods:S-Ag was extracted from fresh bovine retina and inoculated into the AC of Wistar rats,One week later,the S-Ag mixed with complete fruend's adjuvant(CFA)was injected into footpad intradermaly.The clinical symptoms and the pathological changes were observed.The IL-4 and IFN-? concentrations in the supernatant of splenic cell culture were measured by ELISA.Results:The incidence of EAU in pretreated group(group A) was markedly higher than that of positive controls(gropu B).There were histopathological changes in all rats with clinical symptoms.The IL-4 level of splenic cell culture in group A were significantly higher than those in group B ( P

AIM: To optimize the extraction process for coumarins in Angelica Dahurica by supercritical CO 2 as guided by the contents of oxyimperatorin, imperatorin and the total coumarins in the extract. METHODS: HPLC was applied to determine the contents of oxyimperatorin and imperatorin. orthogonal design was applied to optimize SFE process. Range and variance analysis as well as stepwise nonlinear regression analysis were applied to deal with experimental results. RESULTS: The optimum process was established as following: 21MPa as extracting pressure, 50℃ as extracting temperature, 3.5h as extracting time, 20 mesh as pulverized degree and 6.5MPa as separating pressure. The relative error between experimental data and calculated value was less than 5%. CONCLUSION: Changes in extracting pressure, temperature, time, pulverized degree would affect the extracting results remarkably. Some factors had interactions on the extraction of coumarins in Angelica Dahurica . Regression equation was reasonable and could forecast results precisely.

We analyzed the sequence of vertebrate molecular marker genes, then we selected the mitochondrial DNA (mtDNA) 16S rRNA gene as marker gene. In order to detect four kinds of animal-derived ingredients, which including bovine, goat, pig and chicken. We utilized a pair of universal primers, designed four sets of species-specific microarray probes and two pairs of quality control probes. We optimized the PCR amplifications and hybridization conditions, therefore these four kinds of animal-derived ingredients could be rapid and accurate detected by this approach. The detection limits were all reaches 1 pg. We established the detection platform of these four kinds of animal-derived ingredients. This universal PCR-microarray assay provides a new method for the identification of animal-derived ingredients in the import-export field.
Animal Feed ; analysis ; Animals ; Cattle ; Chickens ; DNA, Mitochondrial ; genetics ; Food Contamination ; analysis ; Goats ; Meat ; analysis ; Microarray Analysis ; methods ; Mitochondria, Muscle ; enzymology ; genetics ; Polymerase Chain Reaction ; methods ; RNA, Ribosomal, 16S ; genetics ; Sensitivity and Specificity ; Swine

Objective: This study aimed to evaluate the validity and predictive value of different methods for myopia screening, and to provide the most effective method of myopia screening. Methods: A total of 7 441 students of grade 1-12 selected from 36 primary and middle schools in 12 counties in Jiangsu Province were enrolled in this study for ophthalmological examination, and uncorrected visual acuity (UCVA, Plan A), noncycloplegic autorefraction (NCAR, Plan B) and combination of UCVA and NCAR (Plan C) were included in the examination. Receiver operating characteristics (ROC) curve was performed to determine the cut-off values (The gold standard is cycloplegic refraction: SE≤0.5 D), and positive predictive value, sensitivities, specificities and other indicators of three screening tests were compared and calculated. Results: The AUC of the combination test for uncorrected visual acuity(UCVA) and noncycloplegic autorefraction (NCAR) was nearly 1(0.91, 95%CI=0.90-0.92), and the sensitivity, specificity, Yoden index, diagnostic coincidence rate, positive predictive value and negative predictive value were 92.4%，89.5%，0.82，91.1%，91.3%，90.8%, respectively, but the index of the younger pupils in primary schools was relatively low. The result of screening plan A for students of middle and high school students was the closest to that of myopia diagnosis. Conclusion Combination test, which was recommended by China National Health Commission, can be a practical solution for school students for myopic screening. Under the condition of no mydriatic refraction, Plan A could be considered for myopia screening especially for middle and high school students. For the younger pupils, it is suggested to use the internationally recommended myopia screening strategy, that is, SE ≤ 0.50D after mydriasis.

Objectives To screen the high-risk population of stroke in China using color Doppler flow imaging (CDFI)and to establish a stroke risk prediction model in Chinese population in order to prevent and treat stroke early. Methods Forty-one base hospitals and 715 286 people in the project areas of the first 6 provinces of China conducted routine physical examinations and investigated the related risk factors for cardiocerebrovascular diseases from July 2011 to April 2012 using a cross-sectional study,among them 61 860 patients underwent carotid CDFI screening,and 49 386 of them were high-risk population (exposed to≥3 risk factors). The bilateral common carotid interma-media thickness (IMT),the number of plaques and the degree of carotid stenosis were screened and documented. And whether carotid IMT thickening or not,with or without carotid plaques,and degree of carotid artery stenotic rate 0-49% and≥50% were performed by multivariate logistic regression analysis with the risk factors for stroke,respectively. Results (1)Logistic regression analysis showed that hypertension,atrial fibrillation,smoking,and lack of physical exercise were the independent risk factors for carotid IMT thickening (hypertension:OR,1. 17;95%CI 1. 12-1. 22;atrial fibrillation:OR,1. 15;95%CI 1. 09-1. 21;smoking:OR,1. 13;95%CI 1. 08-1. 17;and lack of physical exercise:OR,1. 12;95%CI 1.08-1. 16). (2)Hypertension,atrial fibrillation, smoking,and diabetes were the independent risk factors for carotid plaque and carotid artery stenosis rate≥50%(carotid plaque,hypertension:OR,1. 55;95%CI 1. 47-1. 62;atrial fibrillation:OR,1. 13;95%CI 1.06-1. 21;smoking:OR,1. 16;95%CI 1. 11-1. 22;and diabetes:OR,1. 30;95%CI 1. 24-1. 37). Carotid stenosis rate≥50%,hypertension:OR,1. 78;95%CI 1.55-2. 03;atrial fibrillation:OR,1. 59;95%CI 1. 39-1. 81;smoking:OR,1. 33;95%CI 1. 20-1. 48;and diabetes:OR,1. 30;95%CI 1. 17-1. 45. Simple obesity did not increase the incidences of carotid atherosclerotic plaque and carotid artery stenosis ≥50%(OR,0. 78, 0.83;95%CI 0. 75-0. 82 ,0. 75-0. 92,respectively). Conclusions Neck vascular ultrasound can be used as a valuable means for screening high-risk population and detecting risk factors of stroke. It has an important clinical significance for the early diagnosis and treatment of carotid atherosclerosis disease.