The construction of open course for information literacy education in the era of ubiquitous network was described according to the COOC self learning platform that we developed with information retrieval course construc-tion as its standards.

This paper introduced the necessity, background, principle, content, function of construction of teaching resource database of blood disease testing technology and its role played in teach-ing reform. Construction of teaching resource database made up for the insufficiency of blood disease test-ing technology in teaching time and resource, explored more scientific learning mode and teaching meth-ods and strengthened the cooperation between part-time teachers and professional teachers of blood dis-ease testing technology courses.

Objective To characterize the clinical presentation of noncardiac chest pain(NCCP), to investigate the quality of life among NCCP patients,and to understand the relation between NCCP and acid reflux and the value of proton pump inhibitor(PPI) in diagnosis of NCCP.Methods Eighty-seven NCCP patients were enrolled to the study.All patients received lansoprzole 30 mg twice daily for 7 days. Patients filled out a questionnaire survey before and after the PPI treatment.The questionnaire included the general personal data,the symptom scale,the medical outcome study 36-item short form healthy survey(SF-36),Zung Self Rating Anxiety Scale(SAS) and Zung Self-rating Depression Scale(SDS).The results were analyzed in comparisons of healthy control group.Results①The most common cause for NCCP was gastroesophageal reflux disease (GERD).The typical reflux syndrome presented among 34.5% of the patients.②Among 87 patients,acid-related NCCP was accounted for 56.3% (49/87), whereas non-acid-related NCCP was accounted for 43.7% (38/87).The sensitivity and specificity of PPI test were 91% and 81%,respectively.③Except the role of role emotional(RE),7 healthy conceptions in the health-related quality of life in NCCP patients were significantly lower than those in healthy volun- teers(P

BACKGROUND:XH1 type self-ligating bracket is a novel appliance of straight wire appliance.Currently,the majority of clinically applied self-ligating brackets are imported,which has low friction,short course of treatment,simple and efficient clinical practice.However,its cost is also very high.Therefore,we designed and developed the bracket.OBJECTIVE:Through the scanning electron microscopy (SEM) observation of XH1-type self-ligating bracket grooves,to perform the energy spectrum analysis of bracket,compare with the other bracket,and test the static and dynamic friction of this bracket.METHODS:A total of 4 kinds of upper right canine brackets,XH1-type self-ligating brackets,2E1 brackets (Shanghai),TP Straight Wire Bracket (USA),and AO self-ligating bracket (USA) were used.Brackets and arch wire were combined,respectively and tested on the XF-1-type friction tester.The friction mv-ms change marked and saved by Fluke190-type oscilloscope was recorded.The compile software graphics Matlab2007 was used to smooth the graph to remove abnormal data.The maximum static friction and a corresponding voltage (mV) value dynamic friction were obtained,and converted into force values,followed by statistical analysis.RESULTS AND CONCLUSION:Different brackets had different static and dynamic frictions.The static and dynamic friction TP-type bracket was higher than XHl-type bracket's.There was no difference between 2E1 and TP bracket,AO and XH1 bracket.This XH1-type self-ligating brackets is a self-developed product,with small static and dynamic friction,simple sterilization,and low cost,which allow widely clinical application.

AIM: To evaluate effects of Pinaverium Bromide on different segments and layers of colonic smooth muscle in wrap restraint stress (WRS) rats and explore its possible therapeutic mechanism on different types of irritable bowel syndrome (IBS). METHODS: Adult SD rats were randomly divided into model group (wrap restraint stress group) and control group. Colonic smooth muscle strips were made from different segments and layers in two groups. The spontaneous contraction activities of colonic longitudinal/circular muscle (LM/CM) strips of rats were observed with organ bath system before and after addition of series concentrations of pinaverium. RESULTS: Pinaverium Bromide caused concentration-dependent inhibition of colonic smooth muscle, the inhibitory effect of pinaverium in model group was significantly stronger than that in control group(proximal colon: 28.54±4.82 vs 7.48±1.65,21.75±1.00 vs 12.56±3.15; distal colon: 15.71±5.27 vs 3.89±1.16, 20.16±3.16 vs 7.56±1.96 )(P<0.05). Compared with that of distal colon, inhibitory effect of pinaverium was significantly higher of proximal colon (P<0.05). For the inhibition of pinaverium, there was no significant difference between LM and CM strips in the same intestinal segments (P>0.05). CONCLUSION: Effects of Pinaverium Bromide on different colonic muscle layers and segments in WRS rats is probably related with its therapeutic mechanism on different types of IBS.

Objective To investigate the protective effects of piceatannol on retinal ganglion cells (RGCs) in rats with glaucoma.Methods Forty rats were randomly divided into 4 groups:control group,model group,low dose piceatannol treatment group and high dose piceatannol treatment group.Photocoagulation method was used to establish the experimental glaucoma model in rats,and then rats were given 100 mg· kg-1 or 200 mg · kg-1 of piceatannol by gavage.The intraocular pressure was measured before and after the model was established.Rat retinal ganglion cells were labeled and counted using FG staining.Retinal tissue pathological morphology was observed by HE staining.The protein expression of p-JNK,p-c-Jun,p-ERK,p-p38 MAPK and TNF-α were measured by western blot.Results Compared with control group,the intraocular pressure,the protein expressions of p-JNK,p-c-Jun p-ERK,p-p38 MAPK and TNF-α were significantly increased in model group (all P ＜ 0.05).However,the number of RGCs were lower in model group(P ＜0.05).Furthermore,there were cavitation and edema changes in retinal tissue of model group.Compared with model group,piceatannol treatment markediy increased the number of RGCs(P =0.003,0.002),improved the pathological morphology of retinal tissue,and reduced the protein expressions of p-JNK,p-c-Jun p-ERK,p-p38 MAPK and TNF-α (all P ＜ 0.05),especially for the high concentration.Conclusion Piceatannol can protect against RGCs injury in glaucoma rats,and the mechanism may be associated with inhibition of MARK signaling pathway.

Objective To estimate the characteristics of gastroesophageal reflux (GER) and its clinical association with pulmonary arterial hypertension (PAH) in systemic sclerosis (SSc) patients.Methods Two hundred and five patients with SSc,who fulfilled the American College of Rheumatology criteria were consecutively recruited.GER was recognized in patients with symptom of heartburn or regurgitation.Demographic,clinical,and laboratory data were analyzed.A six minute walk test,pulmonary function test and modified Rodnan's skin score (mRSS) were also calculated for GER and non-GER groups.x2 test,Fisher's exact test and t-test were used for statistical analysis.Logistic regression test was used for the analysis of risk factors.Results There were 90 patients with GER among 205 patients,the prevalence of GER was 43.9％.The presence of PAH (23.3％ vs 9.6％),Raynaud's phenomenon (98.9％ vs 92.2％ ) and fingertip ulcers (56.7％vs 51.3％) were significantly higher in patients with GER than those without GER.There was no difference in autoantibody profile between GER patients and non-GER patients (P＞0.05).The New York Heart Association (NYHA) functional class of SSc-related GER was worse than patients without GER (P=0.015).Pulmonary function test showed that diffuse capacity (DLCO)％,forced vital capacity (FVC)％,and forced expiratory volume (FEV1)％ were lower and the FVC％/DLCO％ ratio was higher in patients with GER than non-GER (P＜0.05).GER was an independent risk factor of PAH in SSc patients (P=0.047,OR=3.41 ).Conclusion GER frequently occurs in SSc patients,SSc patients presenting with GER should be screened for PAH.Targeting the underlying vascular dysfunction might prevent not only PAH,but also GER in SSc patients.

ObjectiveTo investigate the clinical and laboratory characteristics of systemic sclerosis (SSc) patients with digital ulcer(DU) in China.MethodThe data of 166 consecutive SSc patients in EUSTAR DATABASE in Peking Union Medical Colloge Hospital from February 2009 to August 2010 were prospectively collected,and patients with DU were compared with those without DU.All patients fulfilled the ACR classification criteria for SSc in 1980.Results① Forty-nine patients (29.5％) had DU in 166 SSc patients.The disease onset age was(36±12) years(8.1-61.7 years) for those patients with DU.All had Raynaud's phenomenon(RP).② Demographic data:there were significant differences between patients with and without DU in sex (F/M 40/9 vs 112/5,P=0.005),age [(40±12) years old vs(46±12) years old,P=0.005],the onset age of RP [(33±12) years vs(39±13) years,P=0.005] and the duration from RP to the first non-RP presentaion[ (18±15) months vs(115±307) months,P=0.002 ].③ Clinical manifestations and laboratory findings:there were more diffuse SSc patients and more esophageal involvement in patients with DU (P＜0.05).ConclusionsDU in SSc patients is common,especially in man and patients with diffuse SSc.SSc patients with DU usually are younger when RP onsets and the non-RP manifestations usually present earlier when compared with those patients without DU.

Objective To detect the expression of scleroderma-related autoantibodies, such as anti-Scl-70, anli-centromere antibody ( ACA)and anti-RNA polymerase Ⅲ ( ARA) , and their relationship with clinical features in Chinese systemic sclerosis (SSc) patients. Methods One hundred and thirty-five Chinese SSc patients from the clinical database of the Scleroderma Trials and Research Group proposed by European League Against Rheumatism's Scheroderma Trial and Research Group( EUSTAR) were consecutively enrolled. The expression of ARA, anti-Scl-70 and ACA were detected through linear immunoblotting, double immunodiffusion and indirect irnmunofluorescence, respectively. The relevance between the existing of autoantibodies and clinical manifestations was analyzed statistically. Results Among the 135 Chinese SSc patients, the prevalence of anti-Scl-70, ACA, ARA were 49. 6% , 13.3 % and 8.9% respectively. Patients with anti-Scl-70 antibody had significantly shorter disease course [(71 ±59) month vs (90 ± 103) month, P = 0.041] , higher proportion of interstitial lung disease ( P = 0. 031) but lower of pulmonary arterial hypertension (P =0.042). Modified Rodnan's skin score (P=0.008) and prevalence of facial and cervical cutaneous sclerosis (P = 0. 002) , distal (to elbow/knee ) cutaneous sclerosis ( P = 0. 004 ) and digital pitting scarring/disappear of digital pad were all significantly higher in anti-Scl-70 positive group. Patients with AC A had longer disease course ( P = 0. 036) , lower IgM level ( P = 0. 045) and were less prevalent of interstitial lung disease ( P =0. 045). Patients with ARA had higher serum creatinine and urea nitrogen level ( P ＜ 0.001) although otherwise features had unremarkable differences. Conclusion Scleroderma-related autoantibodies have relevance with different clinical manifestation and detection of these autoantibodies may be helpful to the diagnosis of SSc, organ involvement evaluation and predicting outcomes. The clinical relevances of autoantibodies in Chinese SSc patients may differ from other areas or races.

Objective To investigate the clinical and laboratory characteristics of SSc patients in China. Method The data of 119 consecutive SSc patients based on EUSTAR DATABASE in Peking Union Medical College Hospital from February 2009 to January 2010 were prospectively collected and analyzed. All patients fulfilled ACR classification criteria in 1980 for SSc. Thex2 test and t-test were used to analyze the data. Results (1) Demographic data. Sex ratio (F/M) was 109/10 and the age rang was (44±12) years. There were 65 diffuse cutaneous SSc (dcSSc) patients and 54 limited cutaneous SSc (1cSSc) patients. 112 patients (94.1%) had Raynaud's phenomenon (RP), and the age of RP occurrence was 36 years (13～76 years), among which it was the initial presentation in 91 patients (81.3%) and the disease duration from RP to other manifestation was 12 months.(2) Clinical manifestations. ① The gastrointestinal manifestations (70.6%), especially esophageal involvement (56.3%), articular involvement (54.6%), pulmonary interstitial fibrosis (PIF) (58.8%) were frequently observed, but renal crisis (2.5%), heart block (0) and reduced LVEF (0) were rarely detected. ② Twenty cases (28.6%) out of 70 PIF patients denied any respiratory symptom and were confirmed by HRCT screening. The disease duration from RP to PIF was 34 months(3～352months); 3 case of 24 pulmonary artery hypertension (PAH) patients had no clinical manifestations. The disease duration from RP to PAH was 25 months (4～343 months). Nineteen patients had PIF and PAH simultaneously. ③Peripheral artery disease: SSc patients had a lower ankle brachial index (ABI) level (0.91± 0.19 vs 1.09±0.08, P<0.00l). (3) Laboratory finding. All patients had positive ANA. The positive rate of anti-Scl-70 antibody and ACA was 56.0% and 14.7% respectively. There was no serum sample positive for anti-Scl-70 antibody and ACA. The positive rate of anti-RNA polymerase Ⅲ antibody was 13%. (4) Compared the clinical characteristics and laboratory findings between dcSSc and lcSSc patients, we found that there were significant differences between dcSSc and lcSSc patients in finger ulcer (40.0% vs 20.4%), ACA positive rates (7.7% vs 23.3% , P<0.05). Conclusion The system involvements besides skin in SSc is common, especially PIF and gastrointestinal involvement. According to our data, there are fewer cases with renal crisis and heart block. Because part of patients with PIF have almost no clinical manifestations, so early screening for PIF/PAH is important for early diagnosis and intervention.