ObjectiveTo study the protective effects of Qiqiong(QQJN) on focal cerebral ischemia/reperfusion injury and its mechanism. MethodsMiddle cerebral artery occlusion(MCAO) was used to make focal cerebral ischemia/reperfusion model by intravascular nylon filament occlusion. The protective effects of QQJN were evaluated by investigating neurological function score, percentage of cerebral infarction, pathomorphology of brain, the activity of SOD and the content of MDA in hrain tissue,thrombogenesis and platelet aggregation in vitro. ResultsCompared with model group, QQJN(4.4、8.8g/kg)could decrease the neurological score in 8 and 22h after reperfusion, reduce the percentage of cerebral infauction,improve pathomorphology of brain, decrease the length, wet weight and dry weight of thromb and inhibit platelet aggregation. ConclusionQQJN had protective effects on focal cerebral ischemia/reperfusion injury. The role of anti-injury of free radicals,inhibit thrombogenesis and platelet aggregation should contribute to its neuroprotective effects.

Objective: To evaluate the association between autoimmune diseases (ADs) and thyroid dysfunction using a Mendelian randomization (MR) approach. Methods: Genetic predictors of hypothyroidism and hyperthyroidism were collected through the UK Biobank, including 337 159 individuals and 10 894 596 single nucleotide polymorphisms (SNPs). Genetic predictors of 6 ADs including systemic lupus erythematosus (SLE), ankylosing spondylitis (AS), type 1 diabetes mellitus (T1DM), rheumatoid arthritis (RA), primary biliary cholangitis (PBC), and multiple sclerosis (MS) were collected through the GWAS Catalog database, including 14 267 individuals and 7 071 163 SNPs, 22 647 individuals and 99 962 SNPs, 24 840 individuals and 12 783 129 SNPs, 58 284 individuals and 13 108 512 SNPs, 13 239 individuals and 1 124 241 SNPs, and 38 589 individuals and 156 632 SNPs. MR analysis was performed using the inverse-variance weighted (IVW) method. The horizontal pleiotropy was assessed using the MR-Egger regression, and sensitivity analysis was conducted with the leave-one-out. Results: IVW results showed that a higher risk of hypothyroidism was associated with T1DM (OR=1.007, 95%CI: 1.003-1.011, P<0.05), SLE (OR=1.005, 95%CI: 1.002-1.009, P<0.05), and RA (OR=1.013, 95%CI: 1.009-1.016, P<0.05); a higher risk of hyperthyroidism was associated with T1DM (OR=1.002, 95%CI: 1.001-1.003, P<0.05) and SLE (OR=1.002, 95%CI: 1.001-1.003, P<0.05). Conclusions Genetically predicted ADs are associated with an increased risk of thyroid dysfunction. A higher risk of hypothyroidism is associated with T1DM, SLE and RA; a higher risk of hyperthyroidism is associated with T1DM and SLE.

Objective To identify dosimetric predictors for the development of gastrointestinal toxicity in patients with pancreatic adenocarcinoma treated with TOMO radiotherapy .Methods From January 2014 to Janu-ary 2015 ,we analysed the medical records of 68 pancreatic cancer patients who received helical tomotherapy from Air Force General Hospital .The stomach and duodenum were contoured separately to determine their dose volume histogram(DVH)parameters.Chi-square test was employed to analyze the count data .Spearman correlation anal-ysis was used to analyze the relationship between occurrence of gastrointestinal toxicity and clinical and physical factors.Logistic regression models was performed to identify risk factors associated with gastrointestinal toxicity . Results The median follow-up was 9 months(4~16 months).18 patients experienced grade II acute gastroin-testinal toxicity ,1 patient experienced grade Ⅲ acute gastrointestinal toxicity , whereas 17 patients experienced grade II late gastrointestinal toxicity ,1 patient experienced grade Ⅲlate gastrointestinal toxicity .On UVA,the vol-ume,Dmean,D1,D3,D5,D10,V5 to V40,and V5′to V45′of duodenum were significantly associated with GradeⅡor higher gastrointestinal toxicity ( P <0.05 ) .The MVA, V45′of duodenum was independent predictor for gradeⅡor higher gastrointestinal toxicity(P<0.05).The ROC analysis also showed that V45′of 0.5cm3 was the optimal threshold to predict for gastrointestinal toxicity for the entire cohort .Conclusion V45′of duodenum is of greater importance in the judgment of occurrence of hypofractioned radiation -induced gastrointestinal toxici-ty.

Objective To survey and control an extensively drug-resistant Acinetobacter baumannii (A.bauman-nii)(XDRAB)lower respiratory tract infection (LRTI)outbreak in intensive care unit (ICU)of a hospital. Methods From October 27,2013 to December 27,2013,5 cases of XDRAB LRTI occurred in ICU,epidemiological investigation was conducted,sources and transmission routes of infection were searched,intervention measures were performed.Results XDRAB were isolated from patients’sputum and environmental object surface,drug-resistant spectrums of isolated XDRAB were almost the same,suggesting the outbreak was due to the contamination of envi-ronment by the same pathogen.54 specimens were taken before disinfection,26 were positive,XDRAB were isola-ted from door handles,sheets and telephones.Investigation concluded that the outbreak of XDRAB infection was due to contamination of indoor environment and equipment,incomplete disinfection,and inadequate hand hygiene compliance of health care workers.After the implementation of a series of control measures,XDRAB was not found,and there was no new XDRAB infection cases.Conclusion Environment contamination is the main cause of this XDRAB healthcare-associated infection(HAI)outbreak,strict implementation of isolation,prevention and con-trol measures of MDROs can effectively control HAI outbreak caused by A.baumannii.

Objective To study a scoring method for assessing function status of cardiovascular system quantitatively. Methods First, exercise heart rate variability (EHRV) was obtained from the primary dynamic electrocardiogram (ECG) recorded during exercise testing. Then appropriate entropy, relative complexity, and other three parameters extracted from poincare dispersed-dot plot were extracted from the EHRV. Discriminant analysis was used to classify two extreme groups.Results Based on the values of two groups from the discriminant formula, a scoring formula was proposed and four ranks were divided according to different score domains. A novel scoring method was established. To validate the proposed scoring method, 60 middle-aged hypertensives, 50 elder subjects and 110 young healthy subjects were examined and scored. Conclusion Scores of 220 subjects are consistent with their real health status. The proposed scoring method reflects the status of the subject's cardiovascular system effectively.

Objective To study the antidepressant effect of total timosaponin(TT)and its mechanism.Methods The antidepressant effect of TT was examined by mice forced swimming test(FST),learned helplessness(LH)experiment,chronic mild stress(CMS)model,yohimbine induced lethality test and 5-HTP induced head-twitches test.Results TT(25 or 50 mg?kg-1,ig,qd?14 d)markedly shortened the immobility time in the FST,but didn't affect the autonomic activity.TT(12.5,25 or 50 mg?kg-1,ig,qd?14 d)significantly decreased the number of escape deficits in the LH mice.TT(25 or 50 mg?kg-1,ig,qd?21 d)markedly enhanced the locomotor activity and increased consumption of sucrose solution in CMS mice.TT(50 mg?kg-1,ig,qd?14 d)enhanced the mortality of mice after administration of yohimbine for 4 h,and distinctly increased the head-twitch number in the 5-HTP induced head-twitches test.Conclusion TT has antidepressant effects in various depression mouse models.Its mechanism may be related to the reinforcement of NE and 5-HT nerves system.

Aim To explore the mechanism of neuro-protecting effects of TGRP on ischemic cerebral injury.Methods The middle cerebral artery was occluded for 2 h to produce focal ischemic followed by 24 h reperfusion.HE staining,TUNEL labeling and immunohistochemical methods were used to investigate changes of neuronal apoptosis and expression of the apoptosis-related proteins after administration of TGRP.Result TGRP decreased the pathologic changes significantly.The apoptosis of neural cells and the expression of Bax positive cells in the TGRP groups significantly decreased compared with the control group(P

Objective To evaluate the preoperative nutritional status of the patients which were preparing for cardiac valves replacement using nutrition risk screening 2002 (NRS2002),and analyze the evaluation effect and bring forward the corresponding nursing interventions.Methods 226 patients who would carry out cardiac valves replacement in the context of extracorporeal circulation were evaluated by NRS2002 preoperatively.88 patients had nutrition risk.Those elective 88 patients were randomly assigned into the experimental group and the control group,each had 44 cases.Then different nursing measures were implemented in each group and the clinical outcome was contrasted in the two groups.Results In the patients who were preparing for cardiac valves replacement,88 cases had preoperative nutrition risk score ≥3 points and 138 cases ＜ 3 points.Preoperative nutrition risk score had positive correlation with heart function grade.Difference of the experimental group and the control group in length of stay,length of mechanical ventilation after surgery and incidence rate of general complications had statistical significance.Conclusions It is effective to analyze the preoperative nutritional status of the patients with cardiac valves replacement by NRS2002.It may improve prognosis effectively by providing preoperative nursing interventions for patients with nutrition risk.Besides,it provides theoretical basis for further studying the relation between nutrition support and clinical outcome of patients with nutrition risk.

BACKGROUND:Whether determination of tacrolimus blood concentration by different immunoassay methods can influence predictive ability to immunosuppressive effects and toxicity, and whether it can be more sensitive to reflect blood concentration in patients with renal dysfunction are worthy of studying.
OBJECTIVE:To analyze the correlation of tacrolimus (FK506) concentrations determined by enzyme-multiplied immunoassay technique (EMIT) and enzyme linked immunosorbent assay (ELISA) in combination with renal function parameters.
METHODS:133 clinical blood samples were col ected. EMIT and ELISA techniques were used to determine the FK506 concentration. The correlation of two determination methods were analyzed, combined with renal function. RESULTS AND CONCLUSION:In patients with renal dysfunction, the mean results and standard deviation mensurated by ELISA were higher than those by EMIT. For blood concentration in 5-20μg/L by ELISA, the incidence of renal dysfunction occurred less than by EMIT. The overal mean results of blood concentration for two methods appeared no significant difference (r=0.904 5, P>0.05). When the concentration was less than 2.0μg/L, the concentration results by EMIT were higher than those by ELISA (P<0.01). When the concentration was more than 2.0μg/L, there was no significant difference between two determination methods (P>0.05). These findings indicate that EMIT and ELISA has good correlation, which are both suitable for clinical routine determination of plasma concentration. It is not recommended for applying EMIT method to determine low blood concentrations (<2.0μg/L). The reference range of concentration should be compartmentalized depending on combination of determination methods and renal function.