Objective:To investigate the influence of lymphadenectomy on efficacy of patients with intrahepatic cholangiocarcinoma (ICC) at different locations.Methods:The retro-spective cohort study was conducted. The clinicopathological data of 123 patients with ICC who were admitted to the Affiliated Hospital of North Sichuan Medical College from January 2015 to January 2022 were collected. There were 78 males and 45 females, aged 55(rage, 50?60)years. All patients underwent radical resection. Observation indicators: (1) clinical characteristics of patients with ICC; (2) follow-up; (3) surgical situations in ICC patients with different number of lymph nodes dissected. Measurement data with normal distribution were represented as Mean± SD, and compari-son between groups was conducted using the independent sample t test. Measurement data with skewed distribution were represented as M(range), and comparison between groups was conducted using the Mann-Whitney U test. Count data were described as absolute numbers or percentages, and comparison between groups was conducted using the chi-square test. Kaplan-Meier method was used to draw survival curve and Log-Rank test was used for survival analysis. Results:(1) Clinical characteristics of patients with ICC. Of the 123 patients, 81 cases had peripheral ICC and 42 cases had central ICC. The albumin-bilirubin grade (grade 1, grade 2?3), preoperative lymph node metastasis risk assessment (low risk, high risk), the number of lymph nodes dissected (<6, ≥6), lymph node metastasis (positive, negative) were 57, 24, 51, 30, 49, 32, 15, 66 in patients with peripheral ICC, versus 19, 23, 17, 25, 14, 28, 16, 26 in patients with central ICC, showing significant differences in the above indicators between them ( χ2=7.40, 5.66, 8.17, 5.62, P<0.05). (2) Follow-up. All the 123 patients were followed up for 28(range, 21?38)months. The 3-year overall survival rate was 57.8% in the 81 patients with peripheral ICC, versus 32.3% in the 42 patients with central ICC, showing a significant difference between them ( χ2=5.98, P<0.05). Of the 42 patients with central ICC, there were 25 cases with high risk of lymph node metastasis before surgery and 17 cases with low risk of lymph node metastasis before surgery. Of the 25 central ICC patients with high risk of lymph node metastasis before surgery, the 3-year overall survival rate was 28.9% in the 18 cases with the number of lymph nodes dissected ≥6, versus 14.3% in the 7 cases with the number of lymph nodes dissected <6, showing a significant difference between them ( χ2=8.90, P<0.05). (3) Surgical situa-tions in patients with the different number of lymph nodes dissected. Of the 123 patients, cases with the number of lymph nodes dissected <6 and ≥6 were 63 and 60, and there was no significant difference in the operation time, intraoperative blood transfusion, postoperative complications, bile leakage, liver insufficiency, pulmonary infection, pleural effusion, abdominal effusion, or lymphatic leakage between them ( P>0.05). One patient might have multiple complications. Conclusions:The prognosis of patients with peripheral ICC is better than that of patients with central ICC. For patients with central ICC who are at high risk of lymph node metastasis before surgery, adequate lymph node dissection may result in a better prognosis.

Objective To analyze the effect of endoscopic middle turbinate angioplasty on postoperative nasal function and olfaction in patients with chronic sinusitis and nasal polyp.Methods Clinical materials of 80 patients with chronic sinusitis and nasal polyps were analyzed retrospectively,and they were divided into control group and research group,40 cases in each group.Control group was treated with endoscopic partial middle turbinate resection,while research group was treated with endoscopic middle turbinate angioplasty.Clinical efficacy,nasal function,olfactory function,SNOT-20CV score,and Lund-Kennedy scoring and complications were compared between two groups.Results Total effective rate of the research group was significantly higher than the control group (P ＜0.05).Before operation,nasal airway resistance and minimal nasal cross-section to anterior nostril distance (DCAN),nasal minimum cross-sectional area (NMCA),nasal volume (NCV),SNOT-20 CV,nasal endoscopic Lund-Kennedy scores showed no significant differences between two groups (P ＞ 0.05).After operation,nasal airway resistance and DCAN and SNOT-20 CV,nasal endoscopic Lund-Kennedy scores decreased significantly in both groups,and these indexes in research group were significantly lower than the control group (P ＜ O.05).The NMCA and NCV increased significantly in both groups,and these indexes in research group were significantly higher than control group (P ＜ 0.05).There was no significant difference in incidence rate of postoperative complications between the two groups (P ＞ 0.05).Conclusion Endoscopic middle turbinate angioplasty is effective in treating chronic sinusitis patients with nasal polyp,which can effectively relieve nasal obstruction and promote nasal function and the sense of smell.

Objective To analyze the effect of endoscopic middle turbinate angioplasty on postoperative nasal function and olfaction in patients with chronic sinusitis and nasal polyp.Methods Clinical materials of 80 patients with chronic sinusitis and nasal polyps were analyzed retrospectively,and they were divided into control group and research group,40 cases in each group.Control group was treated with endoscopic partial middle turbinate resection,while research group was treated with endoscopic middle turbinate angioplasty.Clinical efficacy,nasal function,olfactory function,SNOT-20CV score,and Lund-Kennedy scoring and complications were compared between two groups.Results Total effective rate of the research group was significantly higher than the control group (P ＜0.05).Before operation,nasal airway resistance and minimal nasal cross-section to anterior nostril distance (DCAN),nasal minimum cross-sectional area (NMCA),nasal volume (NCV),SNOT-20 CV,nasal endoscopic Lund-Kennedy scores showed no significant differences between two groups (P ＞ 0.05).After operation,nasal airway resistance and DCAN and SNOT-20 CV,nasal endoscopic Lund-Kennedy scores decreased significantly in both groups,and these indexes in research group were significantly lower than the control group (P ＜ O.05).The NMCA and NCV increased significantly in both groups,and these indexes in research group were significantly higher than control group (P ＜ 0.05).There was no significant difference in incidence rate of postoperative complications between the two groups (P ＞ 0.05).Conclusion Endoscopic middle turbinate angioplasty is effective in treating chronic sinusitis patients with nasal polyp,which can effectively relieve nasal obstruction and promote nasal function and the sense of smell.

The paper analyzes the documents related to the foreign medical automatic Question Answering (QA) system,and compares the differences between automatic QA and traditional network information retrieval,describes the automatic QA system in the aspects of application researches,common tools and relevant technologies.Combining foreign related researches,it also discusses the current key problems of medical automatic QA system and the implications for China in order to offer reference for further research.

Taking the diet problem of diabetic patients as an example,the paper puts forward the problems classification system based on functions in the view of users,classifies the problems put forward by patients through the Support Vector Machine (SVM) algorithm,and provides important support for the construction of the deep automatic Question Answering (QA) system.

Objective To investigate the effect of restrictive intravenous fluid on the complications and quality of life in the advanced hepatocellular carcinoma patients.Methods Clinical data of Three hundred and fifty-seven cases with advanced hepatocellular carcinoma from Mar 2010 to Mar 2016 was retrospectively analyzed.One hundred and sixty-eight cases were recruited in the restrictive intravenous fluid (RIF) group,and One hundred and eighty-nine cases were involved in the control group.The average volume of intravenous fluid of each day,plasma albumin concentration,splanchnocoel hydrops rate,phlebitis,incidence of vomiting,cancer related pain degree,anxiety degree were compared in the two groups.Results The average volume of intravenous fluid of each day in the RIF group [(720.29 ± 106.84) ml] were much lower than that in the control group [(1 820.36±342.12)ml] (P ＜0.05).The plasma albumin concentration in the RIF group [(35.65 ± 2.21)g/L] were higher than that in the control group [(32.25 ±2.32)g/L] (P ＜0.05).The rate of splanchnocoel hydrops,phlebitis,vomiting,bedsores,and hypstatic pneumonia in RIF group were 6.25％,4.69％,8.59％,3.9％,11.72％ and those in the control group were 13.97％,10.92％,17.47％,10.04％,and 24.45％,respectively (P ＜ 0.05).Moreover,the scores of cancer related pain and anxiety were much lower in the RIF group (5.21 ± 1.09,39.12 ± 5.54) than those in the control group(5.68 ± 1.18,41.56 ± 6.78) (P ＜ 0.01).Conclusions Restrictive intravenous fluid therapy can decrease the cancer associated complications and improved the quality of life in the advanced hepatocellular carcinoma patients.

Through the retrieval of literatures about the research and application of ontology in the diabetes field in PubMed,IEEE/ IET Electronic Library,ACM,WANFANG,CNKI,VIP and other Chinese and English databases,as well as the search engines Google Scholar and Baidu Scholar,the paper shows the current situations and summarizes the main study contents.The result shows that the study achievements of ontology in the field of diabetes increase rapidly and there are obvious advantages in semantic comprehension in recent decade.

Objective To evaluate the effect of Liujunzi soup on the total course of disease and inflammatory mediators in patients with remission of allergic cough. Methods Eighty six patients with allergic cough were enrolled in our hospital from April 2011 to April 2012. The patients were randomly divided into observation group (n = 43) and control group (n = 43). The control group was given basic western medicine treatment, the observation group in the control group on the basis of another treatment of six gentleman soup. The levels of inflammatory cytokines, pulmonary function and adverse reactions were compared between the two groups in clinical efficacy, hospitalization time, total course of disease, IL-2, TNF-α and IL-6. Results The total effective rate was 90.70％ in the observation group was significantly higher than that in the control group (72.09％)( P<0.05). The duration of hospitalization (13.35 ± 3.24) d and the total course of disease (17.68 ± 4.53) d were significantly shorter than those in the control group (16.23 ±3.10) d, (20.35 ± 4.67) d (P<0.05). The levels of inflammatory factors and pulmonary function in the observation group were statistically significant compared with the control group (P<0.05). No adverse reactions occurred in both groups. Conclusion Liujunzi Decoction combined with western medicine can improve the level of inflammatory cytokines and lung function, shorten the length of hospital stay, the total course of disease and high safety, and have good clinical value.

Gene synthesis is the most fundamental and widely used technique in biological research. The synthesis of DNA encoding regulatory elements, genes, pathways and entire genomes provides powerful ways to both test biological hypotheses and harness biology for our use. The emerging field of synthetic biology is generating insatiable demands for synthetic genes. And the past couple of years witnessed exciting new developments in microchip-based gene synthesis technologies. This review discusses the current methods of chemical DNA synthesis and gene assembly, as well as the latest engineering tools, technologies and trends which could potentially lead to breakthroughs in the development of accurate, low-cost and high-throughput gene synthesis technology. These new technologies are leading the field of synthetic biology to a higher level.
DNA ; chemical synthesis ; genetics ; Genes, Synthetic ; genetics ; Genetic Engineering ; methods ; Oligonucleotide Array Sequence Analysis

The baculovirus expression system was employed to prepare the virus-like particles (VLPs) of human parvovirus B19. The synthesized VP2 gene of B19 was inserted into the multi-cloning site (MCS) of pFastBac1 vector; the resulting plasmid was transferred to the Escherichia coli DH10Bac competent cells, which contain a baculovirus shuttle vector (Bacmid), to generate Bacmid-VP2 by site-specific transposition. Recombinant baculovirus carrying VP2 gene (rBac-VP2) was then rescued from Bacmid-VP2-transfected Sf9 cells. Indirect immunofluorescence and Western blotting were used to identify the VP2 protein in rBac-VP2-infected Sf9 cells, and the VLPs were observed under transmission electron microscope after being enriched by ultracentrifugation. The B19 VLPs were successfully produced in insect cells with baculovirus expression system, which will facilitate the development of diagnostic reagents to detect the antibody against B19 virus in human serum.
Animals ; Antibodies, Viral ; blood ; Baculoviridae ; genetics ; metabolism ; Capsid Proteins ; biosynthesis ; genetics ; Cell Line ; Cloning, Molecular ; Genetic Vectors ; genetics ; Parvovirus B19, Human ; genetics ; immunology ; Recombinant Proteins ; biosynthesis ; genetics ; isolation & purification ; Virion ; genetics ; metabolism