Objective To study the cognitive tendencies in recognizing negative emotional faces.Methods The experiment used the traditional flanker paradigm for reference.Forty-eight university students (19 males,29 females) finished the flanker tasks deigned by E-Prime, and their accuracy rate and reaction time were recorded in the study.Results ANOVA revealed that,in all cases,the accuracy rate of anger was significant higher than fear and sadness (96.60% ,94.50% ,94.40% ) (P＜0.05).And when the flanking stimuli were fear faces or there were no flanking stimuli, the reaction time of anger was much shorter than fear and sadness ( respectively,fear(801.27 ± 140.99) ms,anger(723.94 ± 151.37 ) ms, sadness(812.21 ± 148.85 ) ms; fear(788.17 ±148.81 ) ms, anger ( 694.28 ± 111.99 ) ms, sadness (763.57 ± 133.91 ) ms, P ＜ 0.05 ).When the flanking stimuli were anger or sadness faces, the reaction time of anger was significant shorter than fear( respectively, fear( 824.09 ± 164.42) ms, anger (721.48 ± 124.06 ) ms, sadness ( 760.50 ± 131.12 ) ms; fear ( 798.95 ± 146.40) ms, anger (702.55 ± 136.07 ) ms, sadness (750.48 ± 133.86) ms, P ＜ 0.05).Conclusion There are no flanker effects in recognizing different negative emotional faces, but there are anger superiority effects of face recognition and cognitive tendencies, which is helpful for clinical diagnosis and treatment of some diseases associated with emotional disorders.

Objective To observe the effects of creatine phosphate sodium on heart function and B -type natriuretic peptide in patients combination with ischemic cardiomyopathy and intractable heart failure .Methods 70 cases of coronary heart disease combined with ischemic cardiomyopathy and intractable heart failure were randomly ( with the random number table ) divided into the control group ( n=33) and the creatine phosphate sodium treatment group (n=37).The control group treated with conventional therapy (digitalis,diuretics,vasodilator,ACEI,et al) ten days;the treatment group with creatine phosphate sodium treatment on the basis of conventional therapy .The symp-tom,sign of the heart failure patients of the two groups before and after treatment were observed .NYHA cardiac func-tional grading were estimated.Echocardiography was used to detect left ventricular end -systolic diameter(LVESD), left ventricular end diastolic diameter ( LVEDD ) and left ventricular ejection fraction ( LVEF ); amino terminal pro brain natriuretic peptide (NT-proBNP) tested by laboratory of the two groups.Drug treatment for 10 days,the chan-ges of the indicators before and after treatment were observed .Results After treatment , compared with the control group[(50.63 ±4.67) mm,(61.30 ±4.58) mm].LVESD,LVEDD of the creatine phosphate sodium treatment [(47.16 ±4.30)mm,(57.92 ±4.30)mm]significantly decreased(t=5.73,4.96,all P<0.01),LVEF[(40.57 ± 4.51)%,(37.63 ±4.53)%]increased significantly(t =5.53,P<0.01).After ten days of treatment levels of NT-proBNP decreased in both two groups [(1 659.±248.18) pg/mL,1 899.3 ±205.45] than before treatment [2 043.46 ±217.04,(2 105.46 ±239.09)pg/mL](t=3.23,3.64,all P<0.05),and the decrease degree of the creatine phosphate sodium treatment group was more obvious than those of the control group (t=4.11,P<0.05). Conclusion Creatine phosphate sodium can improve the cardiac function and left ventricular ejection fraction of ischemic cardiomyopathy and intractable heart failurepatients ,enhance the clinical symptoms of patients .

Quantitative NMR (qNMR) is a technology based on the principle of NMR. This technology does not need the references of the determined components, which supplies a solution for the problem of reference scarcity in the quantitative analysis of traditional Chinese medicines. Moreover, this technology has the advantages of easy operation, non-destructiveness for the determined sample, high accuracy and repeatability, in comparison with HPLC, LC-MS and GC-MS. NMR technology has achieved quantum leap in sensitivity and accuracy with the development of NMR hardware. In addition, the choice of appropriate experimental parameters of the pre-treatment and measurement procedure as well as the post-acquisition processing is also important for obtaining high-quality and reproducible NMR spectra. This review summarizes the principle of qHNMR, the various experimental parameters affecting the accuracy and the precision of qHNMR, such as signal to noise ratio, relaxation delay, pulse width, acquisition time, window function, phase correction and baseline correction, and their corresponding optimized methods. Moreover, the application of qHNMR in the fields of quantitation of single or multi-components of traditional Chinese medicines, the purity detection of references, and the quality analysis of foods has been discussed. In addition, the existing questions and the future application prospects of qNMR in natural product areas are also presented.

Background The rejection following keratoplasty still is a leading cause of corneal transplantation failure.Studies showed that the interleukin-22 (IL-22) ,one of the effector molecules of T helper cell 17 (Th17) participated on the rejection after heart,liver and bone marrow transplantation.However,the effect of IL-22 on corneal graft rejection is not well understood.Objective This study was to investigate the expression of IL-22 mRNA in the corneal grafts and the role of IL-22 in the immune rejection after corneal transplantation in rats.Methods Seventy-two Wistar rats were randomized into autologous keratoplasty group,allograft keratoplasty group and anti-rejection group,and other 4 normal Wistar rats served as normal control group.Autologous keratoplasty was operated on the Wistar rats of the autologous keratoplasty group,and allograft keratoplasty were carried out with the 24 SD rats as donors and 48 Wistar rats as recipients.Tobramycin and dexamethasone eye drops were topically administrated after autologous keratoplasty for 2 weeks in the anti-rejection group.The experimental eyes were examined by slit lamp microscope after surgery and graft survival was evaluated based on the rejection scoring criteria of Larkin.Intergroup accumulated survival rates of grafts were compared using Kaplan-Meier analysis.Histopathological examination of grafts was carried out in 5 and 14 days after operation respectively,and the related expression levels of IL-22 mRNA and aryl hydrocar-bon receptor (AhR) mRNA were carried out by real-time fluorescence quantitative PCR.The feeding and use of the experimental animals followed the Guangdong provincial regulations on the management of experimental animals.The experimental design was approved by the ethics committee of Southern Medical University.Results The median survival time of grafts in the allograft keratoplasty group was 10 days,and that in the anti-rejection group was 17 days,showing a significant survival extention in the anti-rejection group (x2=16.442,P =0.000).Significant differences were found among the 4 groups in the related expression levels of IL-22 mRNA in both 5 days and 14 days after surgery (postoperative 5 days : F=2.44,P =0.00;postoperative 14 days: F=267.92, P =0.00), and the related expression levels of IL-22 mRNA were remarkably higher in the allograft keratoplasty group than those in the anti-rejection group at different time points (postoperative 5 days :9.70±0.35 vs.0.46±0.21;postoperative 14 days : 23.12 ± 1.89 vs.3.14±0.94) (both at P＜0.05).The related expression levels of AhR mRNA in the grafts were considerably different among the 4 groups (postoperative 5 days : F =395.73, P =0.00;postoperative 14 days : F =942.37, P =0.00) , and the expression levels were significantly elevated in the allograft keratoplasty group compared with the anti-rejection group at various time points (postoperative 5 days:2.52±0.32 vs.1.89±0.10;postoperative 14 days:7.20±0.25 vs.2.60±0.17) (both at P＜0.05).Conclusions The expression level of IL-22 RNA up-regulates in the grafts with immuno-rejection.Topical administration of tobramycin and dexamethasone eye drops inhibits the rejection after keratoplasty.AhR plays a regulative role to the expression of IL-22 in rats after keratoplasty.

Objective To develop an up-converting phosphor technology based lateral flow assay ( UPT-LF) to detect ricin toxin ( RT) quickly, accurately and quantitatively.Methods Ricin-monoclonal antibodies were prepared and their affinity was evaluated before four types of monoclonal antibodies with the highest titer were applied to couple with the up-converting phosphor nano-particles ( UCP-NPs) as the bio-conjugate and disperse on the analysis membrane as the test line, respectively.Following systematic optimization to establish the RT-UPT-LF strip, the sensitivity, precision, quantita-tive ability and specificity of RT-UPT-LF were evaluated.Results The detection could be accomplished within 15 min and the detection limit of the RT-UPT-LF assay could reach 0.5 ng/ml within the quantitative detection range of 0.5-1000 ng/ml.Other non-specific toxins at a concentration of 1000 ng/ml did not cause any non-specific reactions.Conclusion The developed RT-UPT-LF strip provides a new means for on-site quantitative detection of ricin toxin.

OBJECTIVE:To investigate the effects of simvastatin intensive treatment on the Postoperative Related Indexes of patients with acute coronary syndrome(ACS) underwent percutaneous coronary intervention(PCI). METHODS:106 patients with were included in the study and randomly divided into observation group(53 cases)and control group(53 cases). Both groups were given aspirin 100 mg,qd+clopidogrel 75 mg,qd before PCI for 4 weeks;observation group was additionally given Simvastatin tablet orally 20 mg before supper 15 d before surgery. TC,TG,LDL-C,HDL-C,hs-CRP,IL-6 and IL-18 levels,LVEF,the occurrence of coronary artery restenosis were detected in 2 groups before surgery and 6 months after surgery. The occurrence of ADR was recorded during treatment. RESULTS:There was no statistical significance in the levels of TG,TC,LDL-C and HDL-C between 2 groups before surgery and 6 months after surgery (P>0.05). There was no statistical significance in hs-CRP,IL-18, IL-6 and LVEF levels between 2 groups before surgery(P>0.05). 6 months after surgery,hs-CRP,IL-6,IL-18 and LVEF levels of 2 groups were significantly higher than before treatment;hs-CRP,IL-6 and IL-18 levels of observation group were significantly lower than those of control group,and LVEF was significantly higher than control group,with statistical significance (P<0.05). The incidence of coronary artery restenosis in observation group was significantly lower than control group, with statistical significance (P<0.05). No ADR was found in 2 groups during treatment. CONCLUSIONS:Preoperative simvastatin intensive treatment can effectively reduce cardiovascular inflammation degree in patients with ACS after PCI,prevent the formation of coronary artery thrombus,and reduce the incidence of coronary artery restenosis so as to effectively improve the prognosis and don' t increase the incidence of ADR.

Objective To observe the effect of intensive training on lower extremity motor function and depression after stroke.Methods Thirty patients with post-stroke depression were randomly divided into an intensive training group and a control group,each of 15.Both groups received conventional anti-stroke and antidepressant drug therapy,and rehabilitation training.The intensive training group,however,was additionally provided with lower extremity motor function training each day.Hamilton Depression Rating Scale,the Fugl-Meyer assessment (FMA),10-meter maximum walking speed test (10MWT) and the Holden functional ambulation categories (FAC) were conducted before treatment,and 2 and 4 weeks after the treatment.The level of human β-endophin (β-EP) and brain derived neurotrophic factor (BDNF) in the serum were also detected.Results After 4 weeks of treatment,the FAM,10MWT,BDNF and β-EP were significantly improved in both groups compared to those before the treatment (P＜ 0.05).No significant differences,however,were found between the 2 groups in the above measurements after 2 weeks of treatment (P＞0.05).After 4 weeks of treatment,the FAM (20.67±6.79),10MWT [(0.48±0.22)m/s],BDNF [(10.81±2.33)μg/L] and β-EP [(164.02±42.15)ng/L] of the intensive training group were significantly improved compared to those of the control group (P＜0.05).Both after 2 weeks and 4 weeks treatment,the HAMD scores of the intensive training group (16.33±6.74 and 12.13±5.44) were significantly better than those of the control group (P＜ 0.05).However,there was no significant difference in terms of FAC between the two groups either after 2 weeks or 4 weeks of treatment (P＞0.05).Conclusion The intensive training can improve motor function and relieve poststroke depression of stroke survivors.It is worth promoting and applying in clinical practice.

Objective To study the capacity of dentifrice containing hydroxyapatite (HA) particles with various grain sizes on the sorption of Cu (Ⅱ) ion from aqueous solution. Methods Three groups of dentifrice suspensions containing 3% HA particles with 60 nm grain size, 3% HA particles with 12 μm grain size, and blank dentifrice were prepared with serial concentrations. Copper ion solutions with initial concentration of 4.0 mg/L were mixed with dentifrice suspensions respectively and then been kept still for 24 hours. The residual copper ion concentration of the supernatant was measured by inductively coupled plasma emission spectrometer and the sorption rate of copper ion was calculated. Results The residual copper ion concentration of the supernatant decreased with increase of the concentration of dentifrice suspensions. The sorption rate of copper ion of dentifrice containing 60 nm HA was highest among the three groups. Conclusion Nano HA should be added into dentifrice to enhance the sorption capacity of copper ion from aqueous solution.

Objective To investigate the therapeutic efficacy and side effects of arsenic trioxide (As2O3) with ATRA on newly-diagnosed patients with acute promyelocytic leukemia (APL). Methods 35 patients of newly-diagnosed APL received As2O3 with ATRA treatment. The therapeutic effects were compared with As2O3 treatment on 33 patients. The dose were adjusted according with As2O3 0.16 mg·kg-2·d-1 and ATRA 25 mg·m-2·d-1 until complete remission (CR). The CR rate, period to CR, the incidence of early death and side effects were observed in two groups. Results There was no significant difference in CR rate, in which 94.3 % for As2O3 with ATRA group and 90.9 % for As2O3 group (P >0.05). Significant difference was observed in the period to CR, in which the medium time to CR was 26.1 days for As2O3 with ATRA group and 30.5 days for As2O3 group (P <0.05). No significant differences was detected in APL associated syndrome, the occurrence of cytoxic responses and the incidence of early death. The death rate was higher in high WBC group than that in middle and low WBC group, with statistical difference (P <0.05), but there was no obvious difference between lower WBC and middle WBC group (P >0.05). Conclusion The treatment combined with As2O3 and ATRA could lessen the time of reaching CR. The WBC count > 10×l09/L was one of the main causes of therapy associated death and the APL differentiation syndrome should be detected and given attention immediately.

Objective To observe the changes of VEGF and Ang-2 expression in streptozotocin(STZ)-induced diabetic rat retina after insulin therapy and explore possible roles of insulin in the development of diabetic retinopathy. Methods Diabetes was induced in 8-week-old male wistar rats by a single intraperitoneal injection of STZ. After three weeks,animals were randomly divided into four groups:(1)diabetic rats received intensive insulin therapy for 20 days;(2)diabetic rats received unregular insulin therapy,which caused the abrupt fluctuation of glycemic level;(3)diabetic control rats; and (4)normal control rats. After treatment,the animals were sacrificed with an overdose of anesthesia,and the eyes were enucleated and fixed in 4% paraformaldehyde immediately. Paraffin sections of retina were prepared.Expression of VEGF and Ang-2 was assessed by immunofluorescence stain and images analysis. Results Quantitative analysis showed VEGF and Ang-2 protein expression was increased by 2.38-fold and 2.41-fold in diabetic rats retinas as compared to non-diabetic rats retinas respectively (P0.05). Conclusion Intensive insulin therapy could decrease VEGF and Ang-2 expression in retina and has protective effect on diabetic retinopathy in STZ-diabetic rats.