Objective To study the effect of autogeneic platelet-rich fibrin (PRF) on proliferation and adipogenic differentiation of human adipose-derived stem cells (ADSCs) in vitro.Methods ADSCs were isolated from adipose tissue obtained from donors undergoing liposuction and were cultured,and underwent identification.ADSCs at passage 3 were divided into three groups:test groups were cultured with 1PRFM and 2PRFM,and control group was cultured without PRF membrane.Then the growth of the cells was observed by inverted microscope.MTT method was used to observe cell proliferation activity at days 1,2,3,4,5,6 and 7 after culture.Adipogenic differentiation of ADSCs was observed and quantified by oil red O staining at days 3,5,7,9,11 and 14.Results Cell proliferation and adipogenic differentiation would be increased with the PRFM,There were significant differences among three groups.Conclusions PRF could significantly promote proliferation and adipogenic differentiation of ADSCs.

Objective To explore the instructive value of preoperative splenic artery CTA examination on Laparoscopic splenectomy (LS). Methods From January 2008 to February 2010,36 cases requiring Laparoscopic splenectomy (LS) were selected randomly and divided into two groups: CTA group and non-CTA group, 18 cases in each group. As for the CTA group,splenic artery CTA examination was performed before operation,to understand splenic artery and its branches anatomy type and track and then individualized surgical treatment was developed. As for the non-CTA group,a routine surgical procedure was performed. The indices before and during the operation were recorded and compared through χ2 test The operating time and the amount of bleeding in the two groups were compared using t-test Results There were no significant difference between the indices recorded by splenic artery CTA examination and those by laparoscopic splenectomy intraoperation ( P > 0. 05 ) . The operating time was (124. 32 ±21.43) mins in the CTA group, which was significantly shorter than that in the non-CTA group ((148.27 ±28. 36)mins) (P <0. 05). The amount of blood in the CTA group was significantly less than that in the non-CTA group( ( 80. 50 ± 16. 42) ml vs. (101. 35 ± 26.25 ) ml). Conclusions Splenic artery CTA can identify splenic artery and its branches anatomy type and track before LS,therefore guide the development of individualized surgical treatment It increases the safety of LS, reduces bleeding and shortens the operational time. It has an instrutive value to laparoscopic splenectomy.

This study was aimed to evaluate the efficacy of Tiao-Bu Fei-Shen therapies (i.e., Bu-Fei Jian-Pi, Bu-Fei Y i-Shen, Y i-Qi Zi-Shen) on cardiac remodeling of chronic obstructive pulmonary disease (COPD) rats and its mechanisms according to the R-value comprehensive evaluation method. Based on the database of previous experiment of COPD rats, R-value comprehensive evaluation method was used to evaluate the indexes as fellows to discuss efficacy of Tiao-Bu Fei-Shen therapies on cardiac remodeling of COPD rats. ① Indicators of right ventricular morphologic indexes: right ventricular hypertrophy index (RVHI), cardiac muscle sarcomere lengths, bulk density of myocardial mitochondria (Vv), surface area (δ), membrane surface (δm), Vv, δ, δm of heart mitochondria;② Indicators of mechanisms: right ventricular endothelin-1 (ET-1), transforming growth factor-beta ( TGF-β) , vascular endothelial growth factor ( VEGF ) , basic fibroblast growth factor ( bFGF ) , matrix metalloproteinase-9 (MMP-9) and tissue inhibitor of metalloproteinase-1 (TIMP-1). The results showed that the sequence of improving effect of right ventricular remodeling at week 20 was Bu-Fei Jian-Pi, Bu-Fei Y i-Shen, aminophylline, and Y i-Qi Zi-Shen; at week 32 and the integrated week 20 and week 32, the sequence of effect was Bu-Fei Jian-Pi, Bu-Fei Y i-Shen, Y i-Qi Zi-Shen, and aminophylline. At integrated week 20 and week 32, Bu-Fei Jian-Pi had significant better intensity correcting effect than aminophylline (P< 0.01). There was no difference between week 20 and week 32. It showed that each treatment group had good long-term effect. For the mechanism of correcting effect on right ventricular remodeling, at week 20, the sequence of comprehensive effect was Bu-Fei Jian-Pi, Bu-Fei Y i-Shen, aminophylline, and Y i-Qi Zi-Shen. And Bu-Fei Jian-Pi had better effect compared with aminophylline and Y i-Qi Zi-Shen (P< 0.01); Bu-Fei Y i-Shen had better effect than Y i-Qi Zi-Shen (P< 0.05). At week 32, the sequence of effect was Y i-Qi Zi-Shen, aminophylline, Bu-Fei Jian-Pi, and Bu-Fei Y i-Shen. At the integrated week 20 and week 32, the sequence of effect was Bu-Fei Jian-Pi, and Bu-Fei Y i-Shen, Y i-Qi Zi-Shen, and aminophylline. Until week 32, the correcting effect of Tiao-Bu Fei-Shen therapies and aminophylline still maintained the same level as at week 20. It indicated that each treatment plan had good long-term effect. It was concluded that Tiao-Bu Fei-Shen therapies can improve the cardiac remodeling of COPD rats and expression of related factors in the cardiac remodeling through the R-value comprehensive evaluation method. And the effect of Bu-Fei Jian-Pi was obvious with good long-term effect.

A cadmium column reduction-azo dyes spectrophotometric method based on micro sequential injection lab-on-valve was established for the determination of total nitrogen in seawater. The experimental parameters were optimized, and the interference experiment was carried out. The results showed that the interference of the main components and salinity in sea water could be eliminated by using a series of standard solution prepared by national standard seawater with certain salinity. The concentration of total nitrogen in seawater was linear with the absorbance in the range of 0 . 03-1 . 00 mg/L with a correlation coefficient of 0. 9993. When determining the national standard seawater at nitrogen concentration of 0. 20 mg/L, the relative standard deviation (RSD) was 4. 9%, the detection limit was 0. 010 mg/L, and the recoveries were 99. 5%-101 . 1%. There were not significance differences between the results of this method and national standard method in the t-test analysis. The method is suitable for the determination of total nitrogen in seawater.

Objective To investigate AXIN2 mRNA expression level in hepatocellular carcinoma (HCC) , and to analyze the effect of AXIN2 gene methylation status on its mRNA expression and HCC genesis and development. Methods Fifty-three surgical excised HCC specimens and paired adjacent non-cancerous specimens, seven normal liver specimens and five HCC cell lines were collected. The expression of AXIN2 at mRNA level and the methylation status of AXIN2 gene promoter were determined by quantitative PCR. Results The expression of AXIN2 mRNA was lower in HCC tissues (0.1629 + 0.0679) than that in adjacent non-cancerous tissues (0. 4155 + 0. 2330), and there was significant difference (Z= -2. 567, P = 0. 010). The methylation level of AXIN2 gene in HCC and adjacent non-cancerous tissues (39. 77% ±3. 89%, and 36. 92% ±2. 81%) was significantly higher than that in normal liver tissues (7. 38% ±2. 40% , t=-3. 663 ,P = 0. 009;t= -4. 591 ,P = 0. 007).AXIN2 gene was hypermethylated in all five HCC cell lines. There was a negative correlation between AXIN2 mRNA expression level and the degree of methylation ( r = -0. 458, P = 0. 032). The methylation level was higher in TNM Ⅲ patients of HCC than that in TNM Ⅰ and Ⅱ patients (P =0.008). Conclusion The down-regulation of AXIN2 gene mRNA expression is correlated with its hypermethylation status. The low expression of AXIN2 mRNA and the abnormal methylation of promoter may be one of the important mechanism of HCC genesis and development.

Objective: To compare the effectiveness of Internet plus mode with tradition education mode on tuberculosis prevention in schools,so as to provide the reference for reducing the risk of catching tuberculosis in schools. Methods: Two junior and two senior high schools as well as two universities were selected from Baoding. The two same level schools were randomly divided into the traditional education group and the Internet plus group. All the students received 2-month TB health education intervention. Questionnaire survey was conducted before and after intervention. A total of 2 804 and 2 821 students were investigated before and after intervention respectively. Results: The awareness rate of TB prevention and treatment core knowledge among the traditional education group and the Internet plus group before intervention was 47.5% and 47.8%, respectively (χ2=0.19, P>0.05). After intervention, the percentage of students with positive attitude and behavior regarding TB was 93.0% and 85.1% in the Internet plus group and the traditional model education group, respectively, including willingness to accept TB test (88.6% vs 81.5%), active reporting to school on TB diagnosis (96.4% vs 90.5%), no spitting in public, cover up when sneeze or cough (94.3% vs 90.6%), opening windows for ventilation (98.1% vs 95.7%), and willingness to share knowledge (98.7% vs 96.4%), active prevention of TB (86.3% vs 78.2%)(P<0.05). Conclusion Internet plus mode health education intervention shows more effectiveness on tuberculosis health education, compared with traditional health education.

Objective: To investigate the correlation between type 2 diabetes mellitus (T2DM) and hepatocellular carcinoma (HCC) by case-control study. Methods: From January 2006 to December 2015, the data of 1 350 first diagnosis HCC patients at the First Affiliated Hospital of Zhengzhou University were collected and analyzed. The univariate and multivariate logistic regression were performed to analyze the risk factors of HCC genesis, and the risk factors were further stratified. Results: The results of univariate logistic regression analysis showed that smoking and obesity were not risk factors of HCC genesis (both P>0.05). Alcoholism, hepatitis B virus (HBV) infection, hepatitis C virus (HCV) infection, T2DM, and family history of HCC were the risk factors of HCC genesis (odds ratio (OR)=2.593, 4.583, 3.732, 1.955 and 1.622, 95% confidence interval (CI) 1.883 to 3.549, 3.026 to 6.940, 2.544 to 5.367, 1.708 to 2.477 and 1.314 to 2.267, all P<0.05). The results of multivariate logistic regression analysis indicated that alcoholism, HBV infection, HCV infection, T2DM and family history of HCC were independent risk factors of HCC genesis (OR=2.034, 4.564, 2.831, 1.881 and 1.616, 95%CI 1.507 to 2.745, 2.672 to 7.765, 1.562 to 5.047, 1.314 to 2.671 and 1.177 to 2.228, all P<0.01), and T2DM could increase the risk of HCC genesis (P<0.01). In order to exclude the interference of alcoholism, HBV infection and HCV infection on above results, further stratified analysis showed that T2DM was one of the independent risk factors of HCC genesis (χ²=5.190, P=0.023), and had synergistic effect with alcoholism, HBV infection and HCV infection (χ²=32.848, P<0.01). There were significant differences in the propovtion, duration of disease and hemoglobin A_1c level of T2DM patients between the case group and the control group (χ²=46.618, 81.644 and 43.092, all P<0.01). Conclusions T2DM is one of the independent risk factors or HCC genesis. T2DM is correlated with the pathogenesis of HCC. The clinical desease course and blood glucose control in patients with T2DM are also correlated with the pathogenesis of HCC.

Objective:To investigate the epidemiological characteristics, diagnosis, treat-ment and prognosis of gallbladder cancer in China from 2010 to 2017.Methods:The single disease retrospective registration cohort study was conducted. Based on the concept of the real world study, the clinicopathological data, from multicenter retrospective clinical data database of gallbladder cancer of Chinese Research Group of Gallbladder Cancer (CRGGC), of 6 159 patients with gallbladder cancer who were admitted to 42 hospitals from January 2010 to December 2017 were collected. Observation indicators: (1) case resources; (2) age and sex distribution; (3) diagnosis; (4) surgical treatment and prognosis; (5) multimodality therapy and prognosis. The follow-up data of the 42 hospitals were collected and analyzed by the CRGGC. The main outcome indicator was the overall survival time from date of operation for surgical patients or date of diagnosis for non-surgical patients to the end of outcome event or the last follow-up. Measurement data with normal distribu-tion were represented as Mean±SD, and comparison between groups was conducted using the t test. Measurement data with skewed distribution were represented as M( Q1, Q3) or M(range), and com-parison between groups was conducted using the U test. Count data were described as absolute numbers or percentages, and comparison between groups was conducted using the chi-square test. Univariate analysis was performed using the Logistic forced regression model, and variables with P<0.1 in the univariate analysis were included for multivariate analysis. Multivariate analysis was performed using the Logistic stepwise regression model. The life table method was used to calculate survival rates and the Kaplan-Meier method was used to draw survival curves. Log-rank test was used for survival analysis. Results:(1) Case resources: of the 42 hospitals, there were 35 class A of tertiary hospitals and 7 class B of tertiary hospitals, 16 hospitals with high admission of gallbladder cancer and 26 hospitals with low admission of gallbladder cancer, respectively. Geographical distribution of the 42 hospitals: there were 9 hospitals in central China, 5 hospitals in northeast China, 22 hospitals in eastern China and 6 hospitals in western China. Geographical distribution of the 6 159 patients: there were 2 154 cases(34.973%) from central China, 705 cases(11.447%) from northeast China, 1 969 cases(31.969%) from eastern China and 1 331 cases(21.611%) from western China. The total average number of cases undergoing diagnosis and treatment in hospitals of the 6 159 patients was 18.3±4.5 per year, in which the average number of cases undergoing diagnosis and treatment in hospitals of 4 974 patients(80.760%) from hospitals with high admission of gallbladder cancer was 38.8±8.9 per year and the average number of cases undergoing diagnosis and treatment in hospitals of 1 185 patients(19.240%) from hospitals with low admission of gallbladder cancer was 5.7±1.9 per year. (2) Age and sex distribution: the age of 6 159 patients diagnosed as gallbladder cancer was 64(56,71) years, in which the age of 2 247 male patients(36.483%) diagnosed as gallbladder cancer was 64(58,71)years and the age of 3 912 female patients(63.517%) diagnosed as gallbladder cancer was 63(55,71)years. The sex ratio of female to male was 1.74:1. Of 6 159 patients, 3 886 cases(63.095%) were diagnosed as gallbladder cancer at 56 to 75 years old. There was a significant difference on age at diagnosis between male and female patients ( Z=-3.99, P<0.001). (3) Diagnosis: of 6 159 patients, 2 503 cases(40.640%) were initially diagnosed as gallbladder cancer and 3 656 cases(59.360%) were initially diagnosed as non-gallbladder cancer. There were 2 110 patients(34.259%) not undergoing surgical treatment, of which 200 cases(9.479%) were initially diagnosed as gallbladder cancer and 1 910 cases(90.521%) were initially diagnosed as non-gallbladder cancer. There were 4 049 patients(65.741%) undergoing surgical treatment, of which 2 303 cases(56.878%) were initially diagnosed as gallbladder cancer and 1 746 cases(43.122%) were initial diagnosed as non-gallbladder cancer. Of the 1 746 patients who were initially diagnosed as non-gallbladder cancer, there were 774 cases(19.116%) diagnosed as gallbladder cancer during operation and 972 cases(24.006%) diagnosed as gallbladder cancer after operation. Of 6 159 patients, there were 2 521 cases(40.932%), 2 335 cases(37.912%) and 1 114 cases(18.087%) undergoing ultrasound, computed tomography (CT) or magnetic resonance imaging (MRI) examination before initial diagnosis, respec-tively, and there were 3 259 cases(52.914%), 3 172 cases(51.502%) and 4 016 cases(65.205%) undergoing serum carcinoembryonic antigen, CA19-9 or CA125 examination before initially diagnosis, respectively. One patient may underwent multiple examinations. Results of univariate analysis showed that geographical distribution of hospitals (eastern China or western China), age ≥72 years, gallbladder cancer annual admission of hospitals, whether undergoing ultrasound, CT, MRI, serum carcinoembryonic antigen, CA19-9 or CA125 examination before initially diagnosis were related factors influencing initial diagnosis of gallbladder cancer patients ( odds ratio=1.45, 1.98, 0.69, 0.68, 2.43, 0.41, 1.63, 0.41, 0.39, 0.42, 95% confidence interval as 1.21-1.74, 1.64-2.40, 0.59-0.80, 0.60-0.78, 2.19-2.70, 0.37-0.45, 1.43-1.86, 0.37-0.45, 0.35-0.43, 0.38-0.47, P<0.05). Results of multivariate analysis showed that geographical distribution of hospitals (eastern China or western China), sex, age ≥72 years, gallbladder cancer annual admission of hospitals and cases undergoing ultrasound, CT, serum CA19-9 examination before initially diagnosis were indepen-dent influencing factors influencing initial diagnosis of gallbladder cancer patients ( odds ratio=1.36, 1.42, 0.89, 0.67, 1.85, 1.56, 1.57, 0.39, 95% confidence interval as 1.13-1.64, 1.16-1.73, 0.79-0.99, 0.57-0.78, 1.60-2.14, 1.38-1.77, 1.38-1.79, 0.35-0.43, P<0.05). (4) Surgical treatment and prognosis. Of the 4 049 patients undergoing surgical treatment, there were 2 447 cases(60.435%) with complete pathological staging data and follow-up data. Cases with pathological staging as stage 0, stage Ⅰ, stage Ⅱ, stage Ⅲa, stage Ⅲb, stage Ⅳa and stage Ⅳb were 85(3.474%), 201(8.214%), 71(2.902%), 890(36.371%), 382(15.611%), 33(1.348%) and 785(32.080%), respectively. The median follow-up time and median postoperative overall survival time of the 2 447 cases were 55.75 months (95% confidence interval as 52.78-58.35) and 23.46 months (95% confidence interval as 21.23-25.71), respectively. There was a significant difference in the overall survival between cases with pathological staging as stage 0, stage Ⅰ, stage Ⅱ, stage Ⅲa, stage Ⅲb, stage Ⅳa and stage Ⅳb ( χ2=512.47, P<0.001). Of the 4 049 patients undergoing surgical treatment, there were 2 988 cases(73.796%) with resectable tumor, 177 cases(4.371%) with unresectable tumor and 884 cases(21.833%) with tumor unassessable for resectabi-lity. Of the 2 988 cases with resectable tumor, there were 2 036 cases(68.139%) undergoing radical resection, 504 cases(16.867%) undergoing non-radical resection and 448 cases(14.994%) with operation unassessable for curative effect. Of the 2 447 cases with complete pathological staging data and follow-up data who underwent surgical treatment, there were 53 cases(2.166%) with unresectable tumor, 300 cases(12.260%) with resectable tumor and receiving non-radical resection, 1 441 cases(58.888%) with resectable tumor and receiving radical resection, 653 cases(26.686%) with resectable tumor and receiving operation unassessable for curative effect. There were 733 cases not undergoing surgical treatment with complete pathological staging data and follow-up data. There was a significant difference in the overall survival between cases not undergoing surgical treatment, cases undergoing surgical treatment for unresectable tumor, cases undergoing non-radical resection for resectable tumor and cases undergoing radical resection for resectable tumor ( χ2=121.04, P<0.001). (5) Multimodality therapy and prognosis: of 6 159 patients, there were 541 cases(8.784%) under-going postoperative adjuvant chemotherapy and advanced chemotherapy, 76 cases(1.234%) under-going radiotherapy. There were 1 170 advanced gallbladder cancer (pathological staging ≥stage Ⅲa) patients undergoing radical resection, including 126 cases(10.769%) with post-operative adjuvant chemotherapy and 1 044 cases(89.231%) without postoperative adjuvant chemo-therapy. There was no significant difference in the overall survival between cases with post-operative adjuvant chemotherapy and cases without postoperative adjuvant chemotherapy ( χ2=0.23, P=0.629). There were 658 patients with pathological staging as stage Ⅲa who underwent radical resection, including 66 cases(10.030%) with postoperative adjuvant chemotherapy and 592 cases(89.970%) without postoperative adjuvant chemotherapy. There was no significant difference in the overall survival between cases with postoperative adjuvant chemotherapy and cases without postoperative adjuvant chemotherapy ( χ2=0.05, P=0.817). There were 512 patients with pathological staging ≥stage Ⅲb who underwent radical resection, including 60 cases(11.719%) with postoperative adjuvant chemotherapy and 452 cases(88.281%) without postoperative adjuvant chemotherapy. There was no significant difference in the overall survival between cases with postoperative adjuvant chemo-therapy and cases without post-operative adjuvant chemo-therapy ( χ2=1.50, P=0.220). Conclusions:There are more women than men with gallbladder cancer in China and more than half of patients are diagnosed at the age of 56 to 75 years. Cases undergoing ultrasound, CT, serum CA19-9 examination before initial diagnosis are independent influencing factors influencing initial diagnosis of gallbladder cancer patients. Preoperative resectability evaluation can improve the therapy strategy and patient prognosis. Adjuvant chemotherapy for gallbladder cancer is not standardized and in low proportion in China.