Objective:To observe the effect of Er Chen Tang on CYP2E1 and mitochondrial energy metabolism in nonalcoholic fat-ty liver disease ( NAFLD) to explore the role of Pinellinae Rhizoma Praeparata ( PRP) and Citri reticulatae pericarpium ( CRP) in the treatment of nonalcoholic fatty liver disease. Methods:Er ChenTang and the prescription without PRP or CRP was respectively given the animal models by gastric gavage. The serum levels of ALT, AST, triglyceride, cholesterol, SOD and MDA in hepatic tissue, and the contents of liver tissue CYP2E1 and ATP were detected in the mice. Results:The CYP2E1 levels in NAFLD mice increased signif-icantly with abnormal mitochondrial energy metabolism. Compared with those in the model group, the levels of ALT, AST, triglyceride and cholesterol were significantly reduced by Er Chen Tang, meanwhile, the content of CYP2E1 was reduced and also restored liver en-ergy metabolism. The treatment effect significantly decreased when the lack of PRP or CRP, and the ability of restoring liver mitochon-drial energy metabolism of Er Chen Tang decreased significantly when the lack of PRP (P<0. 05). After the removal of CRP, the in-hibition ability of Er Chen Tang to CYP2E1 levels significantly decreased (P<0. 05). Conclusion:Er Chen Tang can effectively im-prove nonalcoholic fatty liver diseases, and effectively reduce the content of CYP2E1 in liver tissue of mice and restore the mitochondri-al energy metabolism.

Objective: To investigate the protective effects of matrine combined with glycyrrhizic acid on chronic liver injury induced by carbon tetrachloride, and explore the protective mechanism from the points of energy metabolism and CYP enzyme.Methods: The chronic hepatic injury model of rats was induced by CCl4.The changes of activity of alanine aminotransferase (ALT) and aspartate aminotransferase (AST) in serum were measured to observe the protective effect of the two drugs and their combination.The contents of glutamate dehydrogenase (GLDH) in serum and adenine nucleoside three phosphate (ATP), adenosine diphosphate (ADP) and adenine monophosphate (AMP) in liver tissue were determined to evaluate the regulation effect on hepatic energy metabolism and mitochondrial function.The levels of CYP1A2, CYP2E1 mRNA and protein in liver tissue were detected by real-time PCR and Western Blot to evaluate the two drugs and their combination on the regulation function of liver CYP enzyme.Results: Matrine (72.8 mg×kg-1)and glycyrrhizic acid(43.4 mg·kg-1)could decrease the serum activities of ALT and ALT in chronic hepatic injury model, and the combination (matrine 36.4 mg·kg-1+glycyrrhizic acid 21.7 mg·kg-1) had the most significant protective effect (P＜0.05).Matrine (72.8 mg·kg-1)and glycyrrhizic acid(43.4 mg·kg-1)could decrease GLDH in serum,and restore the content of ATP in liver (P＜0.05).Matrine (72.8 mg·kg-1) had no effect on the expression of CYP1A2 and CYP2E1mRNA, and glycyrrhizin (43.4 mg·kg-1) could inhibit the expression of CYP1A2, CYP2E1mRNA and protein (P＜0.05).Conclusion: Matrine combined with glycyrrhizin has obvious regulation effect on mitochondrial function and liver protective effect in chronic hepatic injury model.

Objective - - To analyze the prevalence and influencing factors of multi site work related musculoskeletal disorders （ ） Methods WMSDs in surgeons. A total of 102 surgeons from four hospitals were selected as study subjects by convenient sampling method. The Chinese version of Musculoskeletal Disorders Questionnaire was used to investigate the prevalence of ， Results WMSDs in the past one year the related individuals and occupational factors. The total prevalence of WMSDs among （ ）， （ ） （ ） surgeons was 54.9%. The top three sites were neck 48.0% lower back 35.3% and shoulder 32.4% . The prevalence of （ vs ，P ） WMSDs in multiple sites was higher than that in a single site 43.1% 11.8% <0.01 . Multivariate logistic regression ， ， analysis showed that surgeons who smoked were tired at work and had a bent back had a higher risk of developing WMSDs ［ （ - ）， （ - ）， （ - ）， P ］ odds ratios and 95% confidence intervals were 3.66 1.41 9.46 8.33 2.15 32.20 and 18.74 2.14 166.77 all <0.01 Conclusion - after excluding the influence of confounding factors. The prevalence rate of multi site WMSDs among surgeons is ， high and the influencing factors include bad living habits and occupational factors such as working load and working posture.

We constructed a recombinant vaccine of Mycobacterium tuberculosis rBCG-Rv2029c,and then identified it.Rv2029c antigen encoding gene was amplified by PCR.The enzyme digestion products were ligated into rpMV261-2029c recombinant plasmid,after double digestion of Rv2029c and pmv261 vector,and then we introduced the plasmid into BCG to construct rBCG-Rv2029c recombinant vaccine by electroporation method.Finally,we analyzed the expression of the recombinant protein by SDS-PAGE and Western blotting.A total of 1 020 bp Rv2029c gene successfully amplified by PCR was inserted into the plasmid pmv261,then the fusion gene was successfully transduced into BCG.After identified by double enzyme digestion,confirmed by gene alignment and by thermally induced with Western blotting,the recombinant protein had a free primary.The recombinant live vaccine of M.tuberculosis rBCG-Rv2029c is successfully constructed,which lay a foundation for the study of the immune mechanism of recombinant vaccine.

Objective To express human vascular endothelial growth factor (hVEGF165) in E. coli JM109 in the form of fusion protein by genetic engineering and test the biological activity and immunological competence of the expressed protein.Methods hVEGF165 gene was subcloned by PCR and inserted into pQE30 plasmid. hVEGF165 fusion protein was expressed in E. coli JM109 and purified by Ni2+-NTA. The immunological competence of the expressed protein was tested by means of Western blotting and enzyme-linked immunosorbent assay (ELISA), and its biological activity was assayed by chicken chorioallantoic membrane (CAM) and Matrigel angiogenesis assay. Results The recombinant hVEGF165 fusion protein was successfully expressed in E. coli JM109 and its expression accounted for 30% of the total cellular protein. The purified protein presented a single band of 23 kD in SDS-PAGE. Western blotting, ELISA, CAM and matrigel angiogenesis assay showed excellent immunologic competence and biological activity of the recombinant protein. Conclusion Recombinant hVEGF165protein with excellent biological activity has been successfully expressed in E. coli JM109, which may facilitate future study in construction of prefabricated tissue-engineered bone graft.

Objective To investigate the association of 13 single nucleotide polymorphism(SNP)sites in 6 phalange-bone development related genes[fibroblast growth factor receptor 2(FGFR2),indian hedgehog signaling molecule(IHH),Msh homeobox 1(MSX1),Runx family transcription factor 2(RUNX2),SRY-box transcription factor 9(SOX9),Wnt family member 5A(WNT5A)]with human index-ring finger length ratio(2D∶4D).Methods Digital cameras were used to take frontal photographs of the hands of 731 college students(358 males and 373 females)in Ningxia,and image analysis software was used to mark anatomical points and measure finger lengths of index(2th)and ring(4th);genotyping of 13 SNP sites(rs1047057,rs755793,rs41258305,rs3731881,rs3100776,rs12532,rs3821949,rs45585135,rs3749863,rs1042667,rs12601701,rs1829556,rs3732750)for 6 genes by multiplex PCR;One-Way ANOVA or independent sample t-test indirectly assessed the association between 2D∶4D and 13 SNP sites.Results Both left and right hand 2D∶4D were significantly higher in females than males in Ningxia college students(all P<0.01);no statistically significant differences in genotype and allele frequencies of the 13 SNP sites among different sexes(all P>0.05);among different sexes,male left hand 2D∶4D was significantly associated with the genotype of SOX9 gene rs12601701 site(P<0.05)and right hand 2D∶4D was significantly associated with the genotype of WNT5A gene rs1829556 site(P<0.05);the female right hand 2D∶4D was significantly associated with the MSX1 gene rs12532(P<0.01)and rs3821949(P<0.05)sites genotypes.Conclusion SOX9(rs12601701),WNT5A(rs1829556)and MSX1(rs12532 and rs3821949)gene polymorphisms may be associated with the formation of 2D∶4D in Ningxia population.

Arrhythmias, Cardiac ; Glucose ; Heart Rate ; Humans

OBJECTIVE: To investigate the feasibilily of screening and identifying the red blood cell type alloantibodies by means of surface plasman resonance(SPR) technique so as to provide a new method for detecting the transfusion compatibility of red blood cells. METHODS: The RBC antigens for screening the alloantibody were fixed on the SPR chip surface by means of amino coupling method; the analysis conditions of SPR chip were optimized and then the control serum with RBC blood group antibody positive was detected; the performance of SPR chip for detection of serum was analysed; the consistance of rusults detected by SPR technique and microcolum agglutination for clinieal samples of 129 thalasstmia patients with history of lone-term blood transfusion were compared; at the same time, the blood group amtibodies in 7 patients with blood group antibody positive were identified before blood transfusion by using SPR chip so as to select the RBC antigen compatible blood for transfusion; and the efficacy of RBC transfusion was followed up and evaluated. RESULTS: The repeatability, sensitivity and specificity of SPR chip technique for detecting the blood group alloantibodies all were better. The SPR technique and microcolumn agglutination method were not significant different for screening blood group alloantibodies (χ2 = 0.333, P＞0.05), and the overall consistency was 97.2%; the results of SPR technique in 7 patients with positive blood group antibodies were as follows: 3 cases with anti-E, 1 case anti-M, 1 case anti-C, 1 case anti-Jka and 1 case autoantibody, which were consistent with the results of microcolumn agglutination tests, and the compatible red blood cells were selected for transfusion, of which the infusion of 6 cases was effective. In only 1 case the infusion was ineffective because of autoantibody. CONCLUSION For screening and identification of blood group alloantibodies, the performance of SPR chip technique is equivalent to the micro-column agglutination, but the procedure of SPR technique is simpler, faster and high-throughput and label-free, which can meet the basic requirements for rapid screening and identification of blood group alloantibodies before transfusion of red blood cells.
Blood Group Antigens ; Blood Transfusion ; Erythrocytes ; Humans ; Isoantibodies ; Surface Plasmon Resonance

Objective The recurrence rate of atrial fibrillation (AF) after radiofrequency catheter ablation (RFCA) remains relatively high. The aim of this study was to investigate the predictive value of rs2200733 polymorphism for AF recurrence after RFCA. Methods Fifty-three AF patients underwent RFCA guided by the magnetic navigation system between July 2015 and September 2016 in Wuxi People’s Hospital. We obtained the baseline data on the patients, conducted genotyping for rs2200733 variants, and followed up the patients for symptoms and complications by electrocardiography (ECG) and dynamic ECG. Using Cox survival analysis, we determined the independent predictors of AF recurrence after RFCA and the sensibility and specificity of predicting AF recurrence at 12 and 24 months post-operatively. Results All the patients were Han Chinese, followed-up for 21.6 ± 9.5 months, and 25 (47.2%) of them experienced AF recurrence at 6.6 ± 5.3 months after RFCA. Kaplan-Meier survival analysis revealed a significant association between rs2200733 polymorphism and AF recurrence in the additive and recessive models (P < 0.001), and multivariate Cox analysis showed the rs2200733 polymorphism (recessive model) to be an independent predictor of post-RFCA AF recurrence (OR = 3.184, 95% CI: 1.378-7.357, P = 0.007). The sensitivity, specificity, positive predictive value, negative predictive value, and accuracy of rs2200733 TT in predicting AF recurrence at 12 months were 64%, 81%, 70%, 76% and 74%, and those at 24 months were 60%, 82%, 75%, 70%, and 72%, respectively. Conclusion The rs2200733 polymorphism is an independent predictor of AF recurrence after RFCA, and its high specificity indicates that it could be used as a tool for screening Han Chinese patients with AF for RFCA.

Objective: To investigate the impact and related mechanisms of glucose fluctuations on aortic fibrosis in rats with type 1 diabetes mellitus. Methods: After injection of streptozotocin (STZ), male Sprague Dawley (SD) (8-12 weeks) rats (n=24) were randomly divided into three groups in accordance with the random number table: controlled STZ-induced diabetes (C-STZ) group (n=8); uncontrolled STZ-induced diabetes (U-STZ) group (n=8); STZ-induced diabetes with glucose fluctuations (STZ-GF) group (n=8). After three weeks, rats were sacrificed and aorta was obtained, aortic fibrosis was detected by Masson trichrome staining. The expression of collagen type 1 (collagen Ⅰ) was tested by immunofluorescence. The expression of runt-related transcription factor 2 (Runx2) was tested by immunohistochemistry. The mRNA levels of collagen Ⅰ and Runx2 were detected by quantitative real-time PCR (qRT-PCR). The protein expressions of collagen Ⅰ, Runx2 and nuclear factor (NF)-κB were determined by Western blot. Primary rat aortic smooth muscle cells (VSMCs) were cultured in three conditions: normal glucose (NG), high glucose (HG) and glucose fluctuations (GF). Cells in GF group were incubated for 72 hours with glucose alternating between 5.5 and 25 mmol/L every 12 hours. TPCA-1, the inhibitor of NF-κB, the expression of collagenⅠin different groups of cells was tested by immunofluorescence. The protein expressions of collagen Ⅰ, Runx2 and NF-κB were also determined by Western blot. Results: (1) The quantitative ratios of the area of fibrosis in the C-STZ group, U-STZ group, STZ-GF group were (8.42±0.10)%, (21.30±0.74)% and (44.39±1.09)% (P<0.05), respectively. The means of integral optical density (IOD) of collagenⅠ in the three groups were 11.92±0.88, 50.04±3.56 and 77.52±2.69, respectively (P<0.05). The mRNA levels of collagenⅠ in the three groups were 1.00±0.10, 2.02±0.28 and 2.83±0.33, respectively (P<0.05). The protein expressions of collagenⅠ in the three groups were 1.05±0.03, 2.06±0.32 and 4.93±0.25, respectively (P<0.05). (2) The average IOD of Runx2 in the three groups were 150.00±7.35, 204.84±2.32 and 391.48±7.13, respectively (P<0.05). The mRNA levels of Runx2 in the three groups were 1.02±0.02, 1.27±0.04 and 2.18±0.12, respectively (P<0.05). The protein expressions of Runx2 in the three groups were 1.03±0.01, 2.34±0.36 and 4.52±0.75, respectively (P<0.05). (3) The protein expressions of NF-κB in the three groups were 1.02±0.01, 1.96±0.13 and 2.64±0.21, respectively (P<0.05). (4) In vitro, application of inhibitor of NF-κB reversed glucose fluctuations-induced upregulation of protein levels of Col Ⅰ and Runx2 (P<0.05). Conclusion: Glucose fluctuations could aggravate aortic fibrosis through activating Runx2 via NF-κB signaling pathways.
Animals ; Aorta ; Diabetes Mellitus, Experimental ; Diabetes Mellitus, Type 1 ; Fibrosis ; Glucose ; Male ; NF-kappa B ; Rats ; Rats, Sprague-Dawley