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As a kind of skills clinical medical students must master, the basic teaching of operative surgery is relatively backward in teaching mode and means, thus negatively affecting the teaching effect. The virtual reality is applied to the basic teaching of operative surgery, and the pre-designed course contents are presented in a situational way, so that students can experience the immersive learning style. It changes the classroom roles, gives full play to the advantages of virtual reality, and makes up the disadvantage of traditional education mode, finally improving the training effect.
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Objective:To study the influence of different feeding patterns on mother-to-child transmission (MTCT) of hepatitis B virus (HBV) in pregnant women with high viral loads who received antiviral medication during pregnancy to the day of delivery.Methods:This prospective cohort study was conducted in Beijing You'an Hospital. From January 1, 2019, to March 31, 2020, and 574 pregnant women with positive hepatitis B surface antigen (HBsAg) and HBV DNA>2×10 5 IU/ml were enrolled. All participants received tenofovir, telbivudine, lamivudine, or propofol tenofovir from 24-28 weeks of gestation and discontinued on the day of delivery, and their neonates were postnatally given routine passive-active immunoprophylaxis. Based on the feeding patterns, the subjects were divided into three groups: breastfeeding ( n=257), bottle-feeding ( n=241) and mixed feeding groups ( n=76). The follow-up data were obtained from liver functions and HBV DNA level of the mothers at 6-8 weeks postpartum and HBV serological markers of infants at 7-12 months. One-way ANOVA, Student-Newman-Keuls, Chi-square test or Fisher exact test, and repeated measures ANOVA were used to analyze the data. Results:The average maternal HBV DNA levels before antiviral treatment did not differ significantly between the three groups [(7.90±0.67), (7.82±0.70), (7.83±0.70) log 10 IU/ml, F=0.912, P>0.05]. HBV DNA level before delivery in the mixed feeding group was slightly lower than that in the breastfeeding and bottle-feeding group [(3.87 ±1.08) vs (4.21±1.17) and (4.30±1.28) log 10 IU/ml, q= 3.052 and 3.831, both P<0.05], while the comparison between the latter two groups showed no significant differences ( P>0.05). After delivery, HBV DNA level in the bottle-feeding group was slightly lower than that in the breastfeeding group [(7.42±0.93) vs (7.69±0.90) log 10 IU/ml, q=4.583, P<0.05]. Among 580 infants (including six pairs of twins), only one bottle-fed infant (0.4%, 1/243) was infected with HBV through MTCT, and none in the breastfeeding or mixed feeding group ( P=0.553). Conclusions:For pregnant women with high viral loads of HBV who have received antiviral medication during pregnancy, although HBV DNA level will rebound after discontinuation upon delivery, breastfeeding is recommended considering it does not increase the risk of MTCT.
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Objective:To evaluate the intrauterine transmission of syphilis in Nantong City, Jiangsu Province from 2012 to 2019, after the introduction of a nationwide policy for preventing intrauterine transmission of syphilis in China in 2011.Methods:This study enrolled all live birth deliveries ( n=455 561) in Nantong from January 2012 to December 2019. The screening, infection rates, anti-syphilis treatment, intrauterine transmission of syphilis, and outcomes of infants with congenital syphilis were retrospectively analyzed using χ 2 test for trend, adjusted χ 2 test, or Fisher's exact test. Results:Except for three women, the remaining 455 558 subjects were all screened for syphilis antibody with a total screening rate of nearly 100%, among which prenatal screening accounted for 96.4% (439 125/455 561) and intrapartum screening for 3.6% (16 433/455 561). In total, 796 (0.17%) women were diagnosed with syphilis during pregnancy, and the prevalence increased from 0.13% (85/64 229) in 2012 to 0.24% (110/45 517) in 2019 (χ 2trend=48.985, P<0.001). The prevalence among women underwent intrapartum screening was significantly higher than those underwent prenatal screening [0.50% (82/16 433) vs 0.16% (714/439 125), χ 2=102.769, P<0.001]. Out of the women with syphilis, 716 (89.9%) received anti-syphilis therapy with 695 cases using penicillin, 16 cases using ceftriaxone and five using erythromycin/azithromycin, while the remaining 80 (10.1%) did not. Intrauterine transmission of syphilis occurred in 14 infants with a transmission rate of 1.8% (14/796). The reported rate of congenital syphilis in all live infants was 0.03‰ (14/460 552). The intrauterine transmission rate in women receiving treatment during pregnancy was significantly lower than that in the untreated women [0.4% (3/716) vs 13.8% (11/80), χ2=66.499, P<0.001]. For the untreated women, the intrauterine transmission rate increased with the rising titers of non-specific syphilis antibody ( χ2trend=5.338, P=0.021). Among infants with congenital syphilis, no obvious adverse outcomes occurred in three infants born to treated mothers, whereas the rates of preterm birth and neonatal death were 7/11 and 2/11 in those born to untreated mothers. Conclusions:Since the implementation of the policy against intrauterine transmission of syphilis, the reported rate of congenital syphilis is 3/100 000 live-birth in Nantong City, reaching the national target of below 15/100 000. Screening and treatment in the first trimester are critical for preventing intrauterine transmission of syphilis. Increased prenatal syphilis screening rate can help further reduction of the intrauterine transmission of syphilis.
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AIM: To guide the multiple imputation of missing data in clinical longitudinal studies and its sensitivity analyses, and highlight the importance of sensitivity analyses by taking the clinical trial of Qizhitongluo Capsule in treating ischemic stroke as an example. METHODS: To implement PROC MI process in SAS to perform multiple imputation and its sensitivity analysis. RESULTS: In the example, after multiple imputation, improvements in lower limb motor scores of the Qizhitongluo group were greater than those of the placebo group (all P<0.01), and the results of two sensitivity analyses under "missing not at random" were consistent with those under "missing at random". CONCLUSION: Multiple imputations combined with sensitivity analyses can ensure a robust result. It is recommended that clinical researchers perform sensitivity analyses after filling missing data.
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This study was a single-center large-sample case-control study.Data of 1 106 elderly patients who underwent unilateral total hip arthroplasty from June 2013 to May 2019 were collected, including items such as patient′s baseline characteristics, comorbidities, perioperative medication, intraoperative blood pressure, and postoperative outcomes.Patients were divided into postoperative nausea and vomiting(PONV)group and non-PONV group according to whether nausea and vomiting occurred within 24 h after operation.Logistic regression analysis was used to determine the risk factors for PONV.The incidence of PONV was 11.03%.Female, intraoperative use of dezocine, and intraoperative hypotension(duration>3 min or cumulative time>6 min)are independent risk factors for PONV, while femoral neck fractures and intraoperative use of dexamethasone are protective factors.
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This study aims to establish a information training and evaluation system from the perspective of training clinical skills of medical students, and investigate the effectiveness of the new training system and information platform through case analysis and comparative study. Results of data analysis showed that hybrid training mode integrating online and offline teaching can significantly improve the clinical skill training effect when compared with the traditional teaching mode. At the same time, it puts forward higher requirements for information environment and design of each teaching part.
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This study aims to establish a information training and evaluation system from the perspective of training clinical skills of medical students, and investigate the effectiveness of the new training system and information platform through case analysis and comparative study. Results of data analysis showed that hybrid training mode integrating online and offline teaching can significantly improve the clinical skill training effect when compared with the traditional teaching mode. At the same time, it puts forward higher requirements for information environment and design of each teaching part.
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Objective To assess the efficacy of immunoprophylaxis against mother-to-infant transmission of hepatitis B virus (HBV) in a real-world setting since the implementation of charge-free hepatitis B immunoglobulin (HBIG) and hepatitis B vaccine in China. Methods The screening rate and the prevalence of hepatitis B surface antigen (HBsAg) in 61 790 puerperants, and the administration of combined immunoprophylaxis in infants of HBsAg-positive mothers in Rugao City of Jiangsu Province from July 1, 2011 to June 30, 2016 were retrospectively analyzed. HBV infection status of infants born to HBV infected mothers was followed up after 7 months of age. HBsAg-positive infants and their mothers were followed up again for HBV markers in April 2018. Fisher's exact test and Cochran-Armitage trend test were used to statistically analyze the differences between groups and various years, respectively. Results All 61 790 puerperants were screened for HBsAg and the prenatal screen rate was 98.6% (60 937/61 790) with an increasing trend over time (χ2trend=750.908, P<0.001). HBsAg-positive puerperants accounted for 5.5% (3 397/61 790) with a decreasing trend over time (χ2trend=32.667, P<0.001). In total, 778 offspring (399 boys and 379 girls) of 759 HBsAg-positive mothers were followed up at (13.7±6.9) months of age, among which 751 (96.5%) were administered and 25 (3.2%) were probably administered standard combined immunoprophylaxis after birth, and the rest two (0.3%) were not. Fourteen infants (1.8%) were HBsAg positive and all born to mothers with positive hepatitis B e antigen (HBeAg). None of the 538 infants born to HBeAg-negative mothers was HBsAg-positive. HBsAg-positive rate in infants born since 2013 was lower than those in 2011 and 2012 (χ2trend=13.352, P=0.000 3). Eleven HBsAg-positive mothers and their children were followed up again 4–5 years later in April 2018. HBV DNA levels of all mothers were within the range of (7.34–28.2)×107 IU/ml except one case of spontaneous HBeAg seroconversion. One out of the 11 infected children also had HBeAg seroconversion. Phylogenetic analysis of HBV S gene showed that the 11 pairs of mothers and children were all infected with HBV of genotype C. Conclusions The implementation of charge-free HBIG and hepatitis B vaccine for newborns achieves fruitful results in Rugao city as the mother-to-infant transmission of HBV in the real-world had been further reduced to a similar level reported in literature survey.
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Objective@#To evaluate the characteristics and performance of various prediction models for early-onset preeclampsia, and to provide a reference for further study of preeclampsia prediction methods.@*Methods@#(1) Databases of PubMed, Medline, Embase, China National Knowledge Infrastructure (CNKI) and Wanfang Database were searched since their inception to October 2016. Studies in models for predicting early-onset preeclampsia during the first trimester were included. (2) Two reviewers independently checked potentially eligible articles, assessed risk of bias and extracted data. (3) Subtotals for the performance of different models were created and their properties were analyzed. Differences between simple models (based upon high risk factors such as demographic figures, medical history and family history, etc) and complex models (based upon blood pressure, uterine artery Doppler and biomarkers) were compared by analyzing forest plot created by SAS 9.4.@*Results@#(1) Seventeen studies met the inclusion criteria were screened out, including nine prospective cohort studies, two case-control studies and six nested case-control studies. A total of 76 436 gravidas from tendifferent populations were assessed by the established models in these studies. (2) The area under the curve (AUC) of 13 simple models ranged from 0.64 to 0.81 with the sensitivity of 21%-60% when the false positive rate (FPR) was 10%. The AUC of 17 complex models ranged from 0.77 to 0.98 and the sensitivity was between 48.0% and 95.2% at a fixed FPR of 10%. (3) Compared with the simple models, the best complex models could ensure a promotion of 0.171 (range from 0.060 to 0.245) in median AUC, and a promotion of 40.8% (16.0% to 52.2%) in sensitivity at a FPR of 10%. Based on the simple models, additional mean arterial pressure (MAP) would increase the AUC and sensitivity by 0.092 (0.079 to 0.104) and 28.7% (16.2% to 55.0%), respectively, while additional uterine artery pulsatility index (UtA-PI) would bring an increase of 0.106 (0 to 0.137) and 31.8% (-1.0% to 41.9%), respectively. Moreover, when both MAP and UtA-PI were included into the simple models, the AUC and sensitivity would increase by 0.157 (0.094 to 0.218) and 31.6% (12.0% to 52.2%).@*Conclusions@#Complex prediction models perform better than simple models in prediction of early-onset preeclampsia. However, further confirmation is required in different population.
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Objective To evaluate the characteristics and performance of various prediction models for early-onset preeclampsia,and to provide a reference for further study of preeclampsia prediction methods.Methods (1) Databases of PubMed,Medline,Embase,China National Knowledge Infrastructure (CNKI) and Wanfang Database were searched since their inception to October 2016.Studies in models for predicting earlyonset preeclampsia during the first trimester were included.(2) Two reviewers independently checked potentially eligible articles,assessed risk of bias and extracted data.(3) Subtotals for the performance of different models were created and their properties were analyzed.Differences between simple models (based upon high risk factors such as demographic figures,medical history and family history,etc) and complex models (based upon blood pressure,uterine artery Doppler and biomarkers) were compared by analyzing forest plot created by SAS 9.4.Results (1) Seventeen studies met the inclusion criteria were screened out,including nine prospective cohort studies,two case-control studies and six nested case-control studies.A total of 76 436 gravidas from tendifferent populations were assessed by the established models in these studies.(2) The area under the curve (AUC) of 13 simple models ranged from 0.64 to 0.81 with the sensitivity of 21％-60％ when the false positive rate (FPR)was 10％.The AUC of 17 complex models ranged from 0.77 to 0.98 and the sensitivity was between 48.0％ and 95.2％ at a fixed FPR of 10％.(3) Compared with the simple models,the best complex models could ensure a promotion of 0.171 (range from 0.060 to 0.245) in median AUC,and a promotion of 40.8％ (16.0％ to 52.2％) in sensitivity at a FPR of 10％.Based on the simple models,additional mean arterial pressure (MAP) would increase the AUC and sensitivity by 0.092 (0.079 to 0.104) and 28.7％ (16.2％ to 55.0％),respectively,while additional uterine artery pulsatility index (UtA-PI) would bring an increase of 0.106 (0 to 0.137) and 31.8％ (-1.0％ to 41.9％),respectively.Moreover,when both MAP and UtA-PI were included into the simple models,the AUC and sensitivity would increase by 0.157 (0.094 to 0.218) and 31.6％ (12.0％ to 52.2％).Conclusions Complex prediction models perform better than simple models in prediction of early-onset preeclampsia.However,further confirmation is required in different population.
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Objective To explore the influence of delivery mode and feeding pattern on cytomegalovirus (CMV) infection on infants born ≥ 32 gestational weeks,and to observe the outcomes after CMV infection.Methods In this retrospective study,378 pregnant women with positive CMV IgG and negative CMV IgM,and their offsprings (384 cases,including six pairs of twins),who got visited at five hospitals of our collaboration group during March 2013 and February 2016,were enrolled.Serum samples were retrieved from a previous study of these participants for CMV IgM and IgG detection with enzyme-linked immunosorbent assay.All participants were divided into exclusive artificial feeding (EAF) and breastfeeding groups (BF),and the latter included exclusive breastfeeding (EBF) and mixed feeding (MF).T or Chi-square or Fisher's exact tests were performed for statistical analysis.Results (1) Among the 378 pregnant women,there were 186 mothers and 190 infants (4 pairs of twins) in BF group,and the other 192 mothers and 194 infants (2 pairs of twins) in EAF group.The percentage of male infants were 54.7％(104/186) and 56.2％(109/194) in the BF and EAF group,respectively.The mean birth age was (38.9± 1.4) and (38.7± 1.7) weeks,and the age at followingup was (9.8± 2.2) and (10.5± 2.9) months,respectively.(2) The CMV IgG positive rate of infants in BF group was higher than in the EAF group [62.6％(119/190) vs 29.9％ (58/194),x2=41.403,P＜0.001].CMV IgG levels in infants were higher than the mothers [(537.1 ±249.5) vs (416.2±241.2) U/ml,t=4.609,P＜0.001].In infants with positive CMV IgG,the positive rates of CMV IgM were similar in the two groups [21.0％(25/119) vs 19.0％ (11/58),x2=0.101,P=0.751].(3) The positive rate of CMV IgG in vaginally born infants was higher than those born by caesarean section [55.2 (95/172) vs 38.7％ (82/212),x2=10.472,P=0.001].Further analysis in the EAF group showed that those infants born vaginally had a higher positive rate ofCMV IgG than those born by caesarean section [42.9％ (33/77) vs 21.4％ (25/117),~=10.231,P=0.001],while this figure did not show statistical difference in the BF group.(4) Infants with positive or negative CMV IgG were in similar age and gender proportion,as well as their height and weight.Among 36 infants with both positive CMV IgG and IgM,three failed in alanine aminotransferase (ALT) test due to hemolysis.However,among the other 33 cases,15.1％ (five cases) presented with lightly elevated ALT (42-107.2 U/L),which was similar to those infants with positive CMV IgG and negative CMV IgM (14/98,14.3％) and those with both negative CMV IgG and IgM (20/144,13.9％),(x2=0.036,P=0.982).Conclusions Although breastfeeding and vaginal birth may increase CMV infection rate in neonates and infants,but no obviously adverse prognosis was reported in those born over 32 gestational weeks.So we should encourage vaginal birth and breastfeeding in these population.
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Objective By analyzing the cesarean delivery rate (CDR) and the indications of cesarean section in Jiangsu Province from 2012 to 2014, to find the strategy to reduce CDR.Methods Data of 40 hospitals whose number of delivery was over 2 400 per year from the database of the Quality Control Center of Gynecology and Obstetrics of Jiangsu Province from 2012 to 2014 were selected.The cohort was divided into two groups, one was specialized hospital including 11 maternal and child health hospitals and the other included 29 general hospitals.After analyzing the current status of cesarean section of the whole province, the average CDR and the distribution of the first indications of cesarean section in two groups were compared using Chi-square test.Results The average CDRs at year 2012, 2013 and 2014 were 53.8％(96 347/178 970), 51.8％ (97 509/188 142) and 48.8％(106 323/217 877), which had a trend of decrease (x2=1 026.2, P ＜ 0.01).CDR without medical indications for each year were 15.7％ (28 098/178 970), 15.5％ (29 162/188 142) and 12.8％ (27 888/217 877).The rate had decreased apparently from both 2012 and 2013 to 2014 (x2=217.6, P ＜ 0.01;x2=341.3, P ＜ 0.01).The CDRs of specialized hospitals for year 2012, 2013 and 2014 were 51.2％ (45 496/ 88 916), 50.6％ (45 853/90 607) and 49％ (55 404/113 105), while the CDRs of general hospitals for each year were 56.6％(50 851/90 054), 53.0％(51 656/97 535) and 48.6％(50 919/104 772).Both showed significant decreasing trend (x2=105.8 and 1 215.7, both P ＜ 0.01).The average CDR of general hospitals was obviously higher than that of specialized hospitals in 2012 and 2013 (x2=505.6 and 104.3, both P ＜ 0.01).However, the difference disappeared in 2014 (x2=3.2, P ＞ 0.05).The three main first indications of cesarean section were associated and postoperative pregnancy complications, and no medical indications.Interestingly, from 2012 to 2014, the CDR for scarred uterus in specialized hospitals raised from 5.4％ to 20.3％, and that in general hospitals increased from 6.7％ to 21.6％, which became the first.Conclusions The average CDR in Jiangsu Province tends to decrease each year, so does the CDR without medical indications.The first indication of cesarean section is associated or postoperative pregnancy complications, while scarred uterus becomes the most common in cesarean section.
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Objective The concentration of cytokines in the amniotic fluid ( AF) may reflect the immune state of maternal-fetal interface .This study aimed to investigate the level of inflammation -related cytokines in the mid-trimester AF of normal pregnant women. Methods This study included 263 pregnant women undergoing mid-trimester genetic amniocentesis , and all of them had normal pregnancy outcomes .Using MILLIPLEX MAP and Luminex, we measured the concentrations of interleukin IL-10, IL-1β, IL-6, monocyte chemotactic MCP-1, and tumor necrosis factor TNF-αin the AF collected from the women at 18-22 +6 weeks′gesta-tion.We analyzed the correlation of their concentrations with maternal age , gestational age , and fetal gender by rank sum test . Results The median concentrations of IL-10, IL-1β, IL-6, MCP-1, and TNF-αin AF at mid-trimester were 7.91, 0.97, 78.15, 1 135.57, and 8.47 pg/mL, respectively.The levels of IL-10 and IL-1βwere higher in the pregnancies with male fetuses than in those with female fetuses (8.54 and 1.18 pg/mL vs 7.72 and 0.85 pg/mL, P=0.043 and 0.008).Maternal age or gestational week at the mid-trimester exhibited no influence on the concentrations of the 5 cytokines. Conclusion The levels of IL-10, IL-1β, IL-6, MCP-1 and TNF-αremain stable in AF at mid-trimester and the former 2 are higher in pregnancies with male fetuses .
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Objective To evaluate the labor duration of healthy primiparas in the past 20 years compared with Friedman labor curve.Methods Published observational studies about labor duration in primiparas with singleton vertex presentation were searched in PubMed,EMBase,Cochrane library,CNKI,VIP and Wanfang database.The Cochrane Collaborafion' s RevMan 5.1 software was used for reta-analysis.Results Eleven literatures involving 4534 primiparas were included,which were eligible for the criteria to investigate the labor duration.Meta-analysis showed that the length of active phase was significantly different between what was showed in primiparas in the past 20 years and Friedman labor curve[ P =0.01,weighted mean difference ( WMD ) =1.61,95％ CI:0.38 to 2.83 ],and significant differences were also found in the second stage duration (P =0.0006,WMD =-0.20,95％ CI:-0.31 to -0.09 ).Conclusions Compared with Friedman labor curve,active phase length of healthy primiparas in the past 20 years was significantly longer and second stage length was shorter.Reassessing labor curve of healthy primiparas is required for more scientific guidance and less unnecessary interventions.
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ObjectiveTo study the situation of neural invasion in pancreatic cancer and investigate its related clinical factors. Methods The neural invasion in 73 cases of pancreatic cancer patients was retrospective analysed. The correlation between neural invasion and clinicopathological parameters,and survival rate was investigated.Results In 73 cases of pancreatic cancer,neural invasion occurred in 38(52.1％) patients,among whom intra-pancreatic neural invasion rate was 15.8％ (n =6) ; and both intrapancreatic and external pancreatic plexus invasion rate was 84.2％ ( n =32).Neural invasion was not related with gender,age,and pathological type,degree of differentiation,tumor size and lymph node metastasis (P ＞ 0.05 ).But the presence of abdominal pain,vascular invasion,the expression of EGFR and VEGF in tumor tissue was significantly related with neural invasion (P ＜0.01 ).The median survival of patients in neural invasion group was 8 months,which were significantly shorter than that of in patients without neural invasion (13 months,x2 =4.69,P =0.030).Conclusions Neural invasion has a high incidence in pancreatic cancer,and it can cause obvious abdominal pain.And it is related with vascular invasion and the expression of EGFR and VEGF in tumor tissue.Neural invasion is one of the factors affecting the survival rate.
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Objective: To observe the effect of ω-3 fish oil emulsion on the experimental severe acute pancreatitis(SAP)through the morphologic alteration of pancreas,the level of serum amylase(AMS)and the functions of liver and kidney,and explore its possible mechanism. Methods: Rat model of SAP was produced by injecting 5% Sodium Cholate(1 ml/kg)into the biliopancreatic duct.Male Sprague-Dawley rats were randomly divided into 4 groups: normal group(n=6),fish oil emulsion treatment group(FOG,n=18),soybean oil emulsion treatment group(SOG,n=18) and normal sodium treatment group(NSG,n=18).Then fish oil emulsion(FO,10 ml/kg);soybean oil emulsion(SO,10 ml/kg)and normal sodium(NS,10 ml/kg)were intravenously injected respectively 120 minutes.The pancreatitis were confirmed by levels of serum AMS and histopathologic score.ALT,AST,BUN and Cr were tested 24 hours after the treatments.Expressions of IL-1β and IL-10 were tested by ELISA.The activated NF-kappa B was examined in the pancreases. Results: Lower level of serum AMS(P<0.05)and lower histopathology score(P<0.05) appeared in FOG.Compared with NS,FO decreased the levels of serum ALT and BUN significantly (P<0.05).FO significantly attenuated the expression of IL-1β (P<0.05).FO downregulated the activity of NF-kappa B efficiently.Conclusions: By down-regulating the levels of IL-1β together with up-regulating the level of IL-10,FO reduces inflammatory damage at the beginning of AP.
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@#Objective To investigate the traits of anxiety and depression of psychological stress insomniacs and the relationship to personality and behavior type.Methods The anxiety and depression as well as personality and behavior type of 56 psychological stress insomniacs were assessed with Self-Rating Anxiety Scale(SAS) and Self-Rating Depression Scale(SDS) as well as Type A Behavior Pattern Scale(TABP).Results Compared with domestic norm,scores of SAS and SDS of psychological stress insomniacs were significantly higher(P<0.01).According to classification standard of SAS and SDS,54 patients(96.4%) were with slight or moderate anxiety and 50 patients(89.3%) with slight or moderate depression.The general distribution of severity of anxiety and depression was no difference(P>0.05).The number of type A-behavior psychological stress insomniacs was 22,obviously more than type A(8 cases),type M(5 cases),type B-(13 cases) and type B(8 cases).Conclusion Psychological stress insomniacs have obvious anxiety and depression.
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0.05).Conclusions:The integrated medicine can regulate monoamine neurotransmitter to some extent.
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Objective To investigate the effect on free portal pressure (FPP), postoperative complications and rebleeding of devascularization procedure with intact portasystemic collateral shunts. Methods The clinical data of 121 patients with portal hypertension undergoing devascularization in our hospital from 1994 to 2004 were retrospectively analyzed. Patients were divided into two groups(96 cases and 25 cases) , respectively according to whether or not the portasystemic collateral shunts were reserved during operation. Results (1) Free portal pressure (FPP) decreased significantly after devascularization in both two groups [(47?8) cmH2O vs. (37?5) cmH2O, (41?7) cmH2O vs. (37?6) cmH2O; P