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Objective To develop an effective decision tree management model for smart triage of nervous system diseases based on artificial neural networks and Bayesian decision theory. Methods Bayesian decision theory was used as the theoretical basis, and convolutional neural network was used to complete the rapid specialist / sub-specialist machine learning. For the specialist or sub-specialist triage data, circular neural network and Bayesian algorithm were performed to complete the probability distribution and convergence of disease symptoms and diagnosis. Results The decision tree management model and theoretical demonstration were established. According to the characteristics of the transfer learning, the rapid learning of nervous system diseases and accurate triage system, and the remote smart triage system were successfully constructed. Conclusions The management model could provide theoretical references for further use, and alleviate to some extent the currently high rate of outpatient appointment withdrawal and changes.
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<p><b>BACKGROUND</b>The aim of this research was to analyze the perioperative factors of regular hepatectomy and irregular hepatectomy. The superiority of the clinical application of the two methods was compared in the perioperative period.</p><p><b>METHODS</b>From 1986 to 2011, 1798 patients underwent consecutive liver resections with regular hepatectomy and irregular hepatectomy at the Air Force General Hospital of People's Liberation Army and the General Hospital of Chinese People's Liberation Army. Their medical documentation was investigated retrospectively.</p><p><b>RESULTS</b>In patients on whom regular hepatectomy and irregular hepatectomy were performed, there was no significant difference in perioperative blood loss, complications, in-hospital mortality, hospital stay, and so on. But in regular hepatectomy, operating time was an independent risk factor (P < 0.001, OR = 1.004).</p><p><b>CONCLUSIONS</b>There was no significant difference between the perioperative risk of regular hepatectomy and that of irregular hepatectomy.</p>
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Female , Humans , Male , Hepatectomy , Methods , Perioperative Period , Retrospective StudiesABSTRACT
ObjectiveTo explore the changes in gene expression in tissues of patients with gastric carcinoma by cDNA microarray.MethodsA 44,000 gene cDNA microarray (Affymetfix) was used to examine gene expression in the tissues of patients with gastric carcinoma.The Sirt1 genes were identified and subjected to realtime PCR analysis.Results The expression of Sirt1 in tissues of gastric carcinoma [(0.318 ±0.032) ～ (0.169 ±0.013 ) time] was extremely lower than in tissues of para- gastric carcinoma ( 1 time).The results of Real-time PCR were consistent with those of genechip analysis.ConclusionsThe expression of Sirt1 was obviously different between tissues of gastric carcinoma and para - gastric carcinoma.Sirt1 may be associated with carcinogenesis of HCC.
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Objective To construct recombinant full length genotype B and C hepatitis B virus (HBV)and to examine HBV DNA replication and hepatitis B surface antigen(HBsAg),hepatitis B e antigen(HBeAg)expressions in Huh7 cells. Methods The full length genotype B and C HBV DNA were extracted and amplified from two HBV infected patients. The recombinant plasmids were constructed by inserting the amplified HBV fragments into the eukaryotic expression vector,pHY106,which were then transfected into Huh7 cells. The cells transfected with blank pHY106 vector were used as control. HBV DNA replication at 72 hours of transfection was detected by Southern blot. The HBV DNA levels in Huh7 cells at 24,48,72,96 and 120 hours of transfection were determined by real-time polymerase chain reaction(PCR).Meanwhile, the HBsAg and HBeAg expression levels in the supernatants at 24,48,72,96 and 120 hours were determined by enzyme linked immunosorbent assay(ELISA).Results The recombinant plasmids expressing genotype B or C HBV DNA were successfully constructed.The HBV replicative intermediates in HBV core particles,including rcDNA dsDNA and ssDNA,were detected by Southern blot.HBV DNA level could reach 8 lg copy/mL which was by real-time PCR. HBsAg and HBeAg levels determined by ELISA peaked at 72 hours after transfection and then declined gradually. Conclusions The recombinant plasmids inserted with genotype B or C HBV DNA are constructed successfully, which can express high levels of HBsAg and HBeAg in Huh7 cells. This system provides a platform for studying the pathogenesis of B and C genotype HBV, the interaction between HBV and host, as well as exploiting new drugs against HBV.
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group pACT-apoA Ⅰ and pBIND-core was higher than that in the negative control.Conclusion HCV core protein and apoA Ⅰ can interact in vivo.This study provides new theory for the mechanism of chronicity hepatitis C in fatty liver.
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Objective To screen proteins from human pancreas cDNA library,which interact with hepatitis C virus(HCV)E1 protein.Methods The human pancreas cDNA library was amplified,purified and evaluated,and then the purified library plasmids were transformed into yeast strain Y187.The reconstructed plasmid pGBKT7-E1 was transformed into yeast strain AH109 and screened on the nutrient deficiency medium SD/-Trp.The transformed AH109 mated with Y187 that contained the library plasmids.The diploid yeast cells were plated on nutrient deficiency medium SD/-Trp/-Leu/-His/-Ade and SD/-Trp/-Leu/-His/-Ade containing X-α-gal for selecting.The plasmids in diploid yeast cells were extracted and electrotransformed into E.coli DH5α.The plasmids in DH5α were extracted,sequenced and blasted.Result Sixteen proteins interacting with HCV E1 were found.Conclusion Some of the sixteen pancreatic proteins may be related with metabolisms of glucose and lipid.
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Objective To screen proteins in pancreas cDNA library interacting with HBsAg protein.Methods After being amplified and identified,the human pancreas cDNA library plasmid was transformed into yeast Y187.Thereafter,the bait plasmid(PGBKT7-HBsAg) was transformed into yeast cells AH109.Then,two different transformed yeast cells were mated.The diploid yeast cells were plated on synthetic dropout nutrient medium(SD/-Trp/-Leu/-His/-Ade) and that medium contained X-?-gal for selection two times.After plasmids of true positive blue colonies were extracted and transformed to E.coli,the results were analyzed by DNA sequencing and blast searching in GenBank database.Results Six proteins binding to HBsAg were screened,including aconitase(ACO1),CDK5RAP3,carboxypeptidase,etc.Conclusion Most of these proteins play significant roles in the evolution of 2 type diabetes mellitus,which may supply some new clues for exploring the pathogenesis of abnormality of lipid metabolism and tglycometabolism in the patients with chronic hepatitis virus infection.