AIM: To develop and perfect the similarity algorithm on chromatographic fingerprints of traditional Chinese medicine(TCM). METHODS: The experimental and simulated data were used to investigate and verify the characteristics on the new and former methods on similarity evaluation for chromatographic fingerprints method. RESULTS: There are many strong points for new similarity algorithm in practice. CONCLUSION: The new method provides more rationality and practicability in TCM quality control and analysis compare to existing methods.

Objective To assess the efficacy of NaClO irrigation of root canal at different temperatures.(Methods Thirty) human teeth with single root-canal mandible premolar were instrumented using standard technique,then were divided into 3 groups,carrying on root-canal irrigation.group A: 5.25% NaClO+System B,group B:5.25% NaClO+15% EDTA,group C:5.25% NaClO+System B+15% EDTA.After the teeth root were split,the scanning electron microscope was used to observe the coronal third,middle third and apical third parts.(Results The) amount of remaining debris on root canal wall in group C decreased significantly,compared with group A and B.The differences of coronal third and middle third between group A and B,group B and C,group A and C were significant(P0.05),but there were significant differences between group A,B and C(P

ObjectiveTo evaluate the efficacy and safety of bepotastine besilate in the treatment of chronic urticaria.MethodsA randomized,double-blind,parallel-controlled clinical study was conducted in 5 centers.Patients were randomly assigned to 2 groups to be treated with bepotastine besilate 20 mg or loratadine 10 mg once a day,respectively,for 4 weeks.Visits were scheduled before and after 1,2 and 4 weeks of treatment.Itching degree,number of wheals and diameter of the largest wheal were recorded for efficacy evaluation.ResultsTotally,240 patients were enrolled and 227 patients completed the study.The response rate was 74.6％ and 77.9％ respectively in bepotastine besilate- and loratadine-treated patients,respectively(P ＞0.05).No significant difference was observed in the incidence of adverse reactions between bepotastine besilate- and loratadine-treated patients(12.8％ vs.17.9％,P ＞ 0.05).The main side effects were mild to moderate drowsiness,dry mouth,dizziness.ConclusionBepotastine besilate is effective and safe for the treatment of chronic urticaria,with an efficacy and safety profile similar to that of loratadine.

Objective To evaluate the protective effect on lung by using continuous pulmonary artery perfusion with oxygenated blood and L-arginine during cardiopulmonary bypass(CPB).Methods Forty five cases received mitral valve replacement were randomly divided into 3 groups and each group involved 15 cases. Group I(control group), patients received routine procedure of CPB. Proup Ⅱ, patients received rcontinuous pulmonary artery perfusion with oxygenated blood. Group Ⅲ,continuous pulmonary artery perfusion with oxygenated blood containing L-arginine (200 mg/kg) (n=15). All cases received routine procedure of CPB and continuously infused from the root of pulmonary artery until releasing aortaoaic clamp. Blood samples were collected from the radial artery respectively at the following time points:after the induction of anaesthesia, 1 hour after opening of aorta, 0, 6, 12, 24 hours after patients being taken back to ICU. ELISA test was used to detected the expression of tmmor necrosis factor-α(TNF-α), interleukin-6 (IL-6) and interleukin-10 (IL-10). Lung tissue samples (1.0 cm ×1.0 cm×1.0 cm) were obtained from right lower lobe. The pathologicl changes of lung tissues were observed under light mi-croscope by using HE staining. Results at each time points, the expression of TNF-α, IL-6 in group Ⅱ and group Ⅲ weresignificantly lower than that in group Ⅰ (P<0.05). The level of TNF-α, IL-6 in group Ⅲ were lower than in group Ⅱ(P<0.05). However, the expression of IL-10 in group Ⅱ and group Ⅲ were higher than in group Ⅰ, and the level of IL-10 in group Ⅲ were higher than that in group Ⅱ(P<0.05). In the group Ⅰ: HE staining showed marked pulmonary interstitial edema, intra-alveolus neutrophilic granulocyte exudation with karyorrhexis. In the group Ⅱ, light capillary vessel hyperaemia and pulmonary interstitial lymphocyte exudation were detected. Nearly normal lung tissue were observed in group Ⅲ. Conclusion Continuous pulmonary artery perfusion with oxygenated blood and L-arginine could inhibit the synthesis of inflammatory factors significantly and increase the releasing of anti-inflammatory factors during CPB. Therefore, it may reduces pulmonary inflammatory reaction and have protective effects on lung tissue.

A novel method was developed for the rapid determination of multi-indicators in corni fructus by means of near infrared (NIR) spectroscopy. Particle swarm optimization (PSO) based least squares support vector machine was investigated to increase the levels of quality control. The calibration models of moisture, extractum, morroniside and loganin were established using the PSO-LS-SVM algorithm. The performance of PSO-LS-SVM models was compared with partial least squares regression (PLSR) and back propagation artificial neural network (BP-ANN). The calibration and validation results of PSO-LS-SVM were superior to both PLS and BP-ANN. For PSO-LS-SVM models, the correlation coefficients (r) of calibrations were all above 0.942. The optimal prediction results were also achieved by PSO-LS-SVM models with the RMSEP (root mean square error of prediction) and RSEP (relative standard errors of prediction) less than 1.176 and 15.5% respectively. The results suggest that PSO-LS-SVM algorithm has a good model performance and high prediction accuracy. NIR has a potential value for rapid determination of multi-indicators in Corni Fructus.

Direct spray mass spectrometry was used to simply and rapidly differentiate Mutong of Aristolochiaceae from other two kinds of Mutong medicinal materials (Lardizabalaceae and Ranunculacea) by analyzing the chemical profile of Mutong of Aristolochiaceae.A novel method for determination of magnoflorine content in Mutong of Aristolochiaceae was established.The results showed that Mutong of Aristolochiaceae could be identified according to the symbolic component, magnoflorine.Under positive ion mode, semi-quantitative result based on the signal strength ratio of magnoflorine and nuciferin was obtained by choosing nuciferin as an internal standard.The method showed good linear coefficient in the concentration range of 0.50-20.00 mg/L of magnoflorine.The limit of detection was 0.1 mg/L.The method was simple and fast, and could be used for direct and rapid in-situ analysis and identification of Mutong of Aristolochiaceae from other closely related Mutong herbal species without sample pre-treatment.The results were important for the quality control of Mutong herbal medicine.

Since the report of retrograde island flap with radial artery by Lu and Wang in 1982 and retrograde island flap with ulnar artery by Li in 1984, the flaps from forearm has been commonly used clinically in recent years because of its good textrue and satisfactory therapeutic results. However, whether the function of hand will be impaired by cutting one of the main arteries which supply the hand still remains controversial. There has been an acute ischemia of hand reported in foreign literature. Since 1985 we have studied 50 upper limbs from fresh cadavers by arteriograghy and vascular dye infusion in our hospital. Based on the results that the distal end of the dorsal interosseous artery of forearm can be anastomosed with a number of dorsal branches of volar interosseous artery at the back of the wrist, we have designed a retrograde island flap with these anastomotic branches as its pedicle to repair soft tissue defect of hands and applied in 71 cases. Seventy flaps survived, only one underwent necrosis because of vascular deformity. It is concluded that the flap has many advantages such as good texture, easiness of anatomical operation and high survival rate. What is more, the flap can be transplanted with nerve, muscle tendon and ulner artery without damage to the main artery of forearm.