0.05). This study suggest that unlike other autonomic ganglia, the enteric nerve ganglia may exhibit a relatively high capacity of autonomic regulation and compensatory adaptation, and also provide some histochemical evidences for the transneuronal degeneration changes.

Objective To investigate the characteristics of risk factors and coronary angiography (CAG)in young patients with acute myocardial infarction(AMI).Methods A total of 36 consecutive AMI female patients (age≤44 years)who underwent coronary angiography were retrospectively retrieved from the database,and 90 AMI patients whose age >44 years who also underwent coronary angiography were enrolled as a control (elderly)group.Characteristics of risk factors and coronary angiography were com-pared between the two groups.Results The risk factors:BMI,family history of coronary heart disease and high triglycerides(TG)were major in the youth group.The percentage of single-branch lesion was lower in the young patients.The prevalence of left anterior descending (LAD)was higher in the young patients(P <0.05).Conclusions The main risk factors in young and elderly patients are significantly different.The out-comes of CAG in the young patients show the coronary lesion are mostly single vessel lesion,and early inter-vention may improve prognosis.

The large majority of elderly patients undergoing ophthalmic surgery take antiplatelet and anticoagulant drugs on a regular basis. Antithrombotic treatments predisposes to bleeding complications that may lead to retrobulbar haemorrhage, suprachoroidal haemorrhage and ultimately, to loss of vision. However, discontinuation of antithrombotic medication in such patients may lead to thromboembolic events with serious consequences. There are no guidelines on perioperative management of ophthalmic patients who are on antiplatelet and anticoagulant drugs. We reviewed traditional and newer agents in the context of cataract, vitreoretinal, glaucoma and oculoplastic surgery. Recommendations are given for continuation, cessation and recommencement of these agents in order to minimise the risk of bleeding and thrombotic complications.

Objective To explore the expression and clinical significance of GSK-3β,PTEN and PLK1 in pediatric AML . Methods Experiment group was bone marrows of 33 cases incipient children with AML .Control group was 10 cases normal bone marrows .GSK-3β,PTEN and PLK1 gene expressions in BMMNC of the two groups were tested using semi quantitative reverse transcriptase polymerase chain reaction(RT-PCR)technique .GSK-3βprotein and P-GSK-3βexpressions were tested by ELISA .Re-sults The expression of GSK-3βmRNA ,GSK-3βprotein ,PLK1 mRNA in BMMNC of children with AML was higher than that of control group(P=0 .012 ;P= 0 .014 ;P= 0 .040);The expression of PTEN mRNA ,P-GSK-3β was lower than the control group (P=0 .012 ;P=0 .002);GSK-3βprotein had a negative correlation with PTEN mRNA (r= -0 .415 ,P=0 .016);GSK-3βmRNA , GSK-3βprotein had a positive correlation with PLK 1 mRNA(r=0 .388 ,P=0 .026;r=0 .427 ,P=0 .013) .The expression of GSK-3βprotein was high in which had high peripheral white blood cell counts ;both the expressions of GSK-3βmRNA and GSK-3βpro-tein were high in which had high risk ;but the expression of P-GSK-3βwere low .Conclusion In pediatric AML ,GSK-3βand PLK1 may play a role of oncogene and PTEN may play a role of tumor suppressor gene .

BACKGROUND:Computer-assisted navigation technique has been widely applied in spinal surgery, but there is stil lack of systematic reviews on this technique in lumbar pedicle screw fixation.
OBJECTIVE:To evaluate the application of computer-assisted navigation technique in lumbar pedicle screw fixation.
METHODS:Databases such as PubMed, Embase and China journal ful-text database CNKI were searched for articles about computer-assisted navigation in lumbar pedicle screw fixation, and related studies and literatures were hand-searched as wel , and then insertion accuracy, intraoperative blood loss, operative time consumption and rate of insertion-related complications between computer-assisted navigation technique group and conservative technique group were compared.
RESULTS AND CONCLUSION:Final y 7 studies which met the inclusion criteria were included with 784 patients and 4 101 lumbar pedicle screws in total. Meta-analysis indicated that malposition rate [relative risk (RR)=0.44, 95%confidence interval (CI):(0.27, 0.69), P=0.000 4] and intraoperative blood loss [weighted mean difference (WMD)=-172.40, 95%CI:(-246.26,-98.53), P<0.000 01] had statistical y significant differences between computer-assisted navigation technique group and conservative insertion group. However, operative time consumption [WMD=-31.45, 95%CI:(-85.56, 22.66), P=0.25] and incidence of complications [RR=0.41, 95%CI:(0.12, 1.41), P=0.16] did not show significant differences between groups. Application of computer-assisted navigation technique in lumbar pedicle screw fixation would improve insertion accuracy. However, further study is stil needed to make clear whether this technique can improve final outcome in post-operative patients.

Objective To investigate the effect of experimental benzolism on marrow eryghrocyte micromucleus.Methods Fifty male KunMingmice(KM)were randomly divided into 5 groups:one control group and four experimental groups with 10 mice in each group.The mice were injected subcutaneously with sodium chloride in control group and benzene in experimental groups on every Monday,Wednesday and Friday for four weeks.Four experimental groups were injected with a dosage of 0.5 ml/kg(group B1),1.0 nd/kg(group B2),1.5 ml/kg(group B3) and 2.0 ml/ks(group B4),respectively.Before and after injection of sodium chloride or benzene weekly.weight was measured,and the alteration of erythrocyte micronucleus in peripheral blood and marrow were detected.Results ① Compared to the control group,several indices were partly changed in B1 and B2 groups,while all indices changed significantly in group B3 and B4 groups four weeks after injection(P<0.01).②The erythrocyte micronucleus rate of experimental mice in peripheral blood and marrow showed ascending tendency with the extension of benzene injection phase,peak emerged in the third week and decreased in the fourth week.③In the 4th week,compared to the control group,the alteration of erythrocyte micronucleus in marrow in all experimental groups were significantly increaged(P<0.05).Conclusions Benzolism may induce the increasing of micronucleus rate of mature erythrocyte in peripheral blood and erythrocyte in marrow.which can be used to detect status of being restrained in marrow erythrocyte series.

OBJECTIVE:To establish a method for analyzing the volatile oil of high-yield and high-oil Curcuma kwangsiensis, and to provide reference for its breeding. METHODS:GC-MS was performed on the column of HP-5MS quartz elastic capillary column,carrier gas was high purity helium(99.999%),flow rate was 1.0 ml/min,inlet temperature was 250 ℃,the initial tem-perature of column was 50 ℃(temperature programmed),split injection with split ratio of 10:1. Mass spectrometry conditions:ionization mode was the electron impact ion source,ionization energy was 70 eV,the ion source temperature was 230 ℃,the quadrupole temperature was 150 ℃, transmission line temperature was 280 ℃,the electron multiplier voltage was 1588 V,and mass scanning range was m/z 45 to 500. High-yield and high-oil germplasm of were screened from 100 different germplasms,the volatile oil composition of single plant and relative percentage contents of each composition were compared,SPSS 22.0 software was used for cluster analysis. RESULTS:Totally 10 high-yield and high-oil germplasm were screened,54 kinds of compounds were identified,the common compositions of 10 different germplasms were camphor,1-caryophyllene,γ-elemene,curcumene, gemma ketone and new curdione,most germplasms contained borneol,isoborneol,δ-elemene,germacrene and calamine. The C78,C104,purpose 2,volatile oil content and relative percentage contents of active compositions in volatile oil were high. The 10 high-yield and high-oil germplasms can be divided into 3 groups. CONCLUSIONS:The study basically clears the main chemicalcomposition of volatile oil of high-yield and high-oil C. kwangsiensis,C78,C104 and purpose 2 are the more excellent strains in high-yield and high-oil C. Kwangsiensis germplasm.

Objective To study the etiology of severe acute pancreatitis (SAP) in Tibetan population at high altitude area.Methods Data of patients with acute pancreatitis (AP) from January 2013 to January 2016 were retrospectively collected.Tibetan and Han patients were selected.According to AP diagnosis criteria, the patients were divided into SAP and non-severe acute pancreatitis (NSAP).Chi square test and multiple Logistic regression analysis were used for data analysis.Results There were 53 Tibetan SAP patients, 98 Tibetan NSAP patients, and 47 Han SAP patients.The results of etiology analysis indicated that the ratios of biliary diseases caused pancreatitis in Tibetan SAP patients, Tibetan NSAP patients and Han SAP patients were 5.7% (3/53), 51.0% (50/98) and 6.4% (3/47), respectively;those alcohol caused pancreatitis were 39.6% (21/53), 10.2% (10/98) and 34.0% (16/47), respectively;those hyperlipidemia caused pancreatitis were 39.6% (21/53), 9.2% (9/98) and 40.4% (19/47), respectively;those drug caused pancreatitis were 1.9% (1/53), 2.0% (2/98) and 2.1% (1/47), respectively;those infection caused pancreatitis were 1.9%(1/53), 6.1%(6/98) and 2.1%(1/47), respectively;those trauma caused pancreatitis were 1.9%(1/53), 5.1%(5/98) and 2.1%(1/47), respectively;those other reasons were 3.8% (2/53), 13.3% (13/98) and 4.3% (2/47), respectively;and those unexplained pancreatitis were 5.7% (3/53), 3.1% (3/98) and 8.5% (4/47), respectively.The ratio of biliary diseases caused pancreatitis in Tibetan SAP patients was lower than that of Tibetan NSAP patients (5.7%, 3/53 vs 51.0%, 50/98), however the ratios of alcohol and hyperlipidemia higher than those of Tibetan NSAP patients (39.6%, 21/53 vs 10.2%, 10/98;39.6%,21/53 vs 9.2%, 9/98), and the differences were statistically significant (x2=31.069, 18.246 and 20.019, all P<0.01).Biliary disease was the independent etiology of NSAP in Tibetan (odd ratios (OR)=20.668, 95% confidence interval (CI) 5.072 to 59.427, P<0.01), but alcohol (OR=16.007, 95%CI 3.700 to 45.654) and hyperlipidemia disease (OR=11.590, 95%CI 2.581 to 33.859) were the independent etiologies of SAP (both P<0.01).There was no statistically significant difference in etiology of SAP between Tibetan and Han (P>0.05).Conclusion The etiology of SAP in high altitude Tibetan people is different from that of NSAP, however there is no difference in etiology of SAP between Tibetan and Han in the same area.

Objective To investigate the role and mechanism of retinoblastoma protein-associated proteins 48 (RBBP4) in HIV-1 latency.Methods CEM-Bru cells latently infected with HIV-1 were stimulated with 25 ng/ml of tumor necrosis factor alpha (TNF-α) in combination with 10 ng/ml of interleukin-2 (IL-2).Chromatin immunoprecipitation (ChIP) was performed to detect the changes in RBBP4 and in histone deacetylases 1 and 2 (HDAC1/2) binding to long terminal repeat (LTR).Binding activities of HDAC1/2 and RNA polymerase Ⅱ (RNA Pol Ⅱ) to LTR and acetylated histone H3 at LTR region were detected by ChIP after partially interfering the expression of RBBP4 in CEM-Bru cells with electroporation.Initiating and elongated transcripts were measured by RT-PCR.Results The binding activities of RBBP4 and HDAC1/2 to LTR in HIV-1 latently infected cells were enhanced significantly as compared with those in TNF-α and IL-2 co-stimulated cells.Fewer RBBP4 and HDAC1/2 bound to LTR following the interference of RBBP4 expression, which was accompanied with enhanced histone acetylation and strengthened binding activity of RNA Pol Ⅱ to LTR.Moreover, more initiating transcripts were detected in HIV-1 latently infected cells after the RBBP4 expression was interfered by electroporation.Conclusion RBBP4 contributes to the maintenance of HIV-1 latency, in which HDAC1 and HDAC2 might be involved.

Objective To study the gene mutation characteristics of patients with spinocerebellar ataxias(SCA) in Ningxia region.Methods The SCA3/Machado-Joseph disease(MJD)trinucleotide CAG repeat number was detected by polymerase chain reaction(PCR),capillary gel electrophoresis(CGE) and DNA sequencing in 6 patients with SCAs and 4 normal kindreds from a family in Ningxia region.Results All patients and 1 kindred were positive for SCA3/MJD;other 3 kindreds were negative for SCA3/MJD.The CAG repeat number was expanded to 66～81 in the patients with SCA3/MJD and a kindred,and 22～33 in other 3 kindreds.Conclusion There is SCA3/MJD in the patients with SCAs of Ningxia region.Gene examining has the great significance for definite diagnosis in the patients with SCAs.