Objective To observe the influences on NO, NOS, ET of the Therapy of Tonifying the Kidney in patients with angina pectoris. Methods 50 patients with angina pectoris were treated by Chinese medicine of tonifying the kindey and the NO, NOS, ET, symptoms, ECG (ischemic ST-T changes), holter ECG, blood viscosity and blood fat were recorded. Results Obvious rise of NO, NOS and drop of ET. The improving of NO(?mol/L) from 46.42?7.94 to 70.16?12.94, NOS(u/mL) from 1.62?0.22 to 2.36?0.30, ET(pg/mL) from 64.46?15.12 to 41.42?8.76, the total efficacy of Chinese medicine of tomifying the kidney to improving of angina pectoris amounted to 92%, to improving of ECG amounted to 68%, the improving time (minutes) of holter ECG from 104.70?12.25 to 24.26?3.41. The rise of NO, NOS, the drop of ET and the therapeutic efficacy of Chinese medicine of tonifying the kidney are better than isosorbidi mononitratis with significant difference (P

Objective To observe the effect of the therapy of tonifying the kidney on plasma NO and ET in dog with myocardial ischemia. Methods 20 dogs of myocarclial ischemia were divided into the model group control group, isosorbide mononitrate group and the therapy of tonifying the kidney group by random. The NO and ET of serum were measured before and after treatment. Results The level of NO was higher and the level of ET was lower than that of the isosorbide mononitrate group. There was significant difference between the control group and the therapy of tonifying the kidney group (P

Objective To establish an equation between canine and other permanent teeth,and probe a new method to predict the sum of the mesiodistal diameters of unerupted permanent canines.Methods Samples consisted of 118 dental casts were obtained from Chinese patients(50 males,68 females,respectively).Mesiodistal tooth diameters were measured by a vernier caliper.GAS was used to establish the equation between canine and other permanent teeth,and compared with stepwise regression analysis.Those were modelling samples that optimized equations coefficient(112 samples).Others were inspection samples(6 samples).Results The equation between canine and other permanent teeth was established.MU=0.0511U1+0.2164U2+0.2780U4+0.0407U5+0.2853U6+0.8321①;ML=0.2998U1+0.1294U2+0.3912U4+0.0088U5+0.0791U6+0.9839②;FU=0.1419U1+0.1741U2+0.3258U4+0.0412U5+0.093U6+1.7355③;FL=0.2796U1+0.3750U2+0.2968U4+0.0268U5+0.0043U6+0.6030④.Compared with stepwise regression analysis,the mean error of precision by GAS was less(P

In the present study, the accuracy of the 4-dimensional model single photon emission computed tomography (4D-MSPECT) and quantitative gated single photon emission computed tomography (QGS) was investigated for assessing left ventricular end-diastolic (EDV), end-systolic volume (ESV) and ejection fraction (EF) from gated myocardial perfusion imaging (G-MPI) using left ventriculography (LVG) as reference. From December 2008 to June 2011, 85 patients, who underwent rest G-MPI and LVG (within 30 days) in West China Hospital, Sichuan University, were retrospectively recruited. EDV, ESV, and EF were calculated from G-MPI using 4D-MSPECT and QGS. Eighty-five patients (47 men, 38 women; age 57 +/- 13 years) were finally analyzed. Correlation between results of G-MPI and LVG was high for EDV, r = 0.89 (4D-MSPECT), r = 0.81 (QGS); ESV, r = 0.97 (4D-MSPECT), R = 0.95(QGS); EF, r = 0.95 (4D-MSPECT), r = 0.93 (QGS). 4D-MSPECT and QGS underestimated EDV significantly compared with LVG [(125 +/- 20) mL (4D-MSPECT), (118 +/- 39) mL (QGS), (131 +/- 33)mL (LVG)]. The ESV, 4D-MSPECT and QGS values did not differ significantly from LVG [(47 +/- 32) mL (4D-MSPECT), (53 +/- 29) mL (QGS), (49 +/- 37) mI (LVG)]. For LVEF, only QGS yielded values were significantly lower than LVG [61% +/- 21% (4D-MSPECT), 55% +/- 17% (QGS), and 63% +/- 19% (LVG)]. EDV, ESV, and EF as determined by 4D-MSPECT and QGS from G-MPI agree well with relevant values with LVG. However, Algorithm-inherent also showed slightly over- or under-estimation of volumes. Therefore, separated normal databases should be set up for each algorithm.
Aged ; Algorithms ; China ; Female ; Humans ; Male ; Middle Aged ; Myocardial Perfusion Imaging ; Regression Analysis ; Software ; Tomography, Emission-Computed, Single-Photon ; Ventricular Function, Left

【Objective】 To investigate the synergistic action of therapy of strengthening Qi,warming yang,activating blood to promote diuresis on routine western medicine for congestive heart failure(CHF) and to observe its effect on neuroendocrine factors.【Methods】Seventy CHF patients with cardiac function of grade Ⅱ～Ⅳ which were classified into Qi deficiency and blood stasis complicated with fluid retention,were randomized into groups A(n=42) and B(n=28).Group B received routine treatment with digoxin,diuretics,angiotensin converting enzyme inhibitors and ? receptor antagonists.Group A additionally received oral use of decoction of herbal medicines of Radix Astragali,Herba Epimedii,Herba Leonuri,Rhizoma Alismatis,etc.,which has the actions of strengthening Qi,warming yang,activating blood to promote diuresis.Four weeks constituted one treatment course.The therapeutic effect as well as the changes of cardiac function and neuroendocrine factors before and after treatment was observed.【Results】In group A,24 were markedly effective,16 effective,2 ineffective and the total effective rate was 95.24%;in group B,19 were markedly effective,4 effective,5 ineffective and the total effective rate was 82.14%.The therapeutic effect in group A was superior to group B(P

OBJECTIVEFrictions of Lock-loose brackets with ligated main wings or all six wings were measured as they slid along archwires in dry and artificial saliva environments. The Lock-loose brackets were then compared with traditional brackets and self-ligating brackets.

METHODSThe surface states of the stainless steel archwires were observed with atomic force microscopy before and after mechanical traction. The Lock-loose brackets, traditional brackets, and self-ligating brackets used in this study were composed of 0.406 4 and 0.457 2 mm stainless steel round archwires and 0.457 2 mm x 0.634 9 mm and 0.482 6 mm x 0.634 9 mm stainless steel rectangular archwires. Two different ligating methods were applied to the Lock-loose brackets, i.e., main wings ligated and all six wings ligated. Frictions were measured by using an electronic universal testing machine.

RESULTSNo significant differences were found between the roughness of different archwires before and after mechanical traction in different brackets (P > 0.05). When the main wings of the Lock-loose brackets were ligated, the frictions of the four different stainless steel archwires were close to zero, and the difference with frictions of traditional brackets was significant (P < 0.05). When using 0.457 2 mm x 0.634 9 mm rectangular archwires, maximum friction (P < 0.05; significantly different from those of other brackets) was reached when all six wings of the Lock-loose brackets were ligated. Frictions in the dry state were higher than those in the wet state (P < 0.05).

CONCLUSIONThe Lock-loose brackets can adjust the friction efficiently with different ligating methods, thus solving the problem of low friction and strengthening anchorage.

Friction ; Humans ; Materials Testing ; Microscopy, Atomic Force ; Orthodontic Appliance Design ; Orthodontic Brackets ; Orthodontic Wires ; Stainless Steel ; Surface Properties

OBJECTIVETo investigate whether miR-492 is involved in the post-transcriptional regulation of OK blood group antigen expression on red blood cells.

METHODSTwo 3'-UTR fragments of the BSG gene were synthesized with a chemical method, which respectively encompassed the BSG rs8259 TT or BSG rs8259 AA sites. The fragments were added with Xho I and Not I restriction enzyme cutting sites at both ends and cloned into a pUC57 vector, which in turn was constructed into a psiCHECK-2 vector and verified by sequencing. K562 cells were transfected with various combinations of miR-492 mimic and constructed psiCHECK2-BSG-T or psiCHECK2-BSG-A recombinant plasmid. A blank control group was set up. Each transfection experiment was repeated three times. The activity of Renilla reniformis luciferase was determined and normalized with that of firefly luciferase, and detected with a dual-luciferase reporter assay system. The data were subjected to statistical analysis.

RESULTSThe sequencing results confirmed that the recombinant psiCHECK2 plasmids containing the BSG rs8259 TT or rs8259 AA sites were constructed successfully. The results of dual-luciferase report gene detection showed that the miR-492 mimic could significantly inhibit psiCHECK2-BSG-T at a concentration over 100 nmol/L. However, it could not inhibit psiCHECK-BSG-A.

CONCLUSIONmiR-492 may be involved in the regulation of OK antigen expression on red blood cells with the BSG rs8259 TT genotype.

Basigin ; genetics ; Blood Group Antigens ; genetics ; Erythrocytes ; immunology ; Gene Expression Regulation ; Genotype ; Humans ; MicroRNAs ; physiology

Objective:To optimize the parameters of the equation of sagittal craniofacial structures with different classes of malocclusion using genetic algorithms(GAS), and to explore the rules .Methods:A total of 240 patients with average angle malocclusion aged 8-18 years old were divided into three groups: Angle Class Ⅰ(n=79), Angle Class Ⅱ(n=76)and Angle Class Ⅲ(n=85) groups.In each group 10 cases were randomly selected as the test samples, the rest as the experimental samples.The cephalometric analysis was performed on all the patients'' cephalograms, and the results of Ba-N,Ba-A,Ba-S,S-Ptm,Ptm-A,Ba-Ar,Ar-Go,Go-PoG,Ba-PoG and N-S-Ar were analyzed by two independent samples t-test and One-Way ANOVA. The relevant influencing factors of craniofacial structures were found.The parameters of the equation was optimized to obtain the relevant equations using GAS.The predicted values of the optimized equation were compared with the measured values.Results:There were no significant differences in sex between Angle Class Ⅰ, Class Ⅱ and Class Ⅲ groups(P> 0.05);when the men and women with the same type were combined,the Ba-A,Ptm-A,Ar-Go,and Ba-PoG had statistically significant differences between Angle Class Ⅰ, Class Ⅱ, and Class Ⅲ groups (P<0.05).The correlation analysis results showed that in Angle Class Ⅰgroup:Ba-A was positively correlated with Ba-N (r=0.683),Ptm-A was positively correlated with Go-PoG (r=0.738), Ar-Go was positively correlated with Ba-PoG (r=0.833), and negatively correlated with Go-PoG (r=-0.560) and Ba-PoG was positively correlated with Go-PoG (r=0.669);in Angle class Ⅱ group,Ba-A was positively correlated with Ba-PoG and Ba-N(r=0.884,r=0.883), Ptm-A was positively correlated with Ba-A (r=0.742),Ar-Go was positively correlated with Ba-PoG (r=0.401)and negatively correlated with Go-PoG (r=-0.317) and Ba-PoG was positively correlated with Ba-A and Go-PoG(r=0.883,r=0.488);in Angle Class Ⅲ group,Ba-A was positively correlated with Ba-N and Ba-PoG(r=0.891,r=0.829),Ptm-A was positively correlated with Ba-A (r=0.807)and negatively correlated with Ba-S (r=-0.404),Ar-Go was positively correlated with S-Ptm (r=0.548) and Ba-PoG was positively correlated with Ba-A (r=0.829).The equation of sagittal craniofacial structure with different occlusal classes was established by GAS.In Angle Class Ⅰgroup:Ba-A(mm)=10.963 9+0.859 8×Ba-N,Ptm-A(mm)=6.897 6+0.557 0×Go-PoG,Ar-Go(mm)=-2.548 2+0.511 8×Ba-PoG-0.5272×Go-PoG,Ba-PoG(mm)=17.515 6+1.021 3×GO-POG;in Angle Class Ⅱ group:Ba-A(mm)=-2.121 3+0.567 6× Ba-PoG+0.513 2× Ba-N,Ptm-A(mm)=13.788 7+0.349 4×Ba-A,Ar-Go(mm)=2.447 7+0.368 8×Ba-PoG-0.427 9×Go-PoG,Ba-PoG(mm)=-7.140 2+0.751 3×Ba-A+0.295 4×Go-PoG;in Angle Class Ⅲgroup:Ba-A(mm)=3.281 0+0.545 3×Ba-N+0.394 4× Ba-PoG,Ptm-A(mm)=3.535 8+0.63 1×Ba-A-0.614 2×Ba-S,Ar-Go(mm)=-9.002 1+1.004 3×S-Ptm,Ba-PoG(mm)=-2.091 2+1.057 5×Ba-A.There were no significant differences between the predicted values of GAS and the measured data (P> 0.05), and the error was small.Conclusion: The optimal relation equation of craniofacial structure of sagittal malocclusion is established by GAS with the quantitative regularity.

Objective:To establish the quantitative relationship equation of the crantiofacial vertical points in the skeletal classⅡ malocclusion patients with various vertical types by using genetic algorithms method,and to express the measured values in the patients with different gender with the same formula.Methods:A total of 155 skeletal class Ⅱ malocclusion patients without treatment,aged from 10 to 18 years old,were selected and divided into high-angle group(n=50),average-angle group(n=58),low-angle group(n=47);5 samples were randomly selected in each group as the test samples,the rest as the experimental sample.The cephalometic radiographs were performed and measured.The relevant influencing factors of craniofacial structure were ensured.The genetic algorithm was used to optimize the equation parameters to obtain the correlation equation.The error between the predicted value and the measured value was compared.Results:The various parameters had no significant differences between different gender in high-angle,average-angle and low-angle groups(P>0.05);then the men and the women with same type were combined,most of the indicators had statistically significant differences between three groups (P<0.05).The correlation analysis results showed that there was a positive correlation between age and Ans-U1(r=0.470),there was a positive correlation between N-Me and Ans-Me(r=0.964);for Ans-U1 ,there was a positive correlation with Ans-Me(r=0.805)and negative correlation with facial angle;there was a positive correlation between N-Go and N-Me (r=0.926);for L1-Me,there was a positive correlation with Ans-Me(r=0.898)and negative correlation with the angle of Go(r=-0.468)in high-angle group. In average-angle group,there was a positive correlation between age and N-Me (r=0.531);for Ans-U1,there was a positive correlation with Ans-Me(r=0.878)and negative correlation with the facial angle(r=-0.262);for Ans-Me,there was a positive correlation with N-Me(r=0.920), negative correlation with N-Ans(r=-0.560)and negative correlation with Ar-Go(r=-0.652);for N-Go,there was a positive correlation with S-Go(r=0.867), positive correlation with N-Ans(r=0.252)and positive correlation with L1-Me(r=0.754).For S-Ar,there was a positive correlation with S-Go(r=0.671), negative correlation with Ar-Go(r=-0.250),and positive correlation with L1-Me(r=0.552).In low-angle group,for age,there was a positive correlation with S-Go(r=0.602), negative correlation with the angle of Go(r=-0.346),and positive correlation with L1-Me(r=0.576);for N-Me,there was a positive correlation with Ans-Me(r=0.869),and positive correlation with N-Go(r=0.859),and negative correlation with the facial angle(r=-0.177);for N-Ans,there was a positive correlation with N-Me(r=0.605) and negative correlation with Ans-U1(r=-0.113);for Ans-Me,there was a positive correlation with N-Me(r=0.869),positive correlation with the facial angle(r=0.070),and positive correlation with Ans-U1(r=0.785);for N-Go,there was a positive correlation with N-Me(r=0.859)and positive correlation with S-Go(r=0.829).The quantitative relationship equations of the crantiofacial vertical points in skeletal class Ⅱmalocclusion patients with various vertical types in each group were established by using genetic algorithms.In high-angle group:Age=5.883 6+0.269×Ans-U1,N-M=22.026 6+1.494 5×Ans-Me,Ans-U1=34.959 4+0.454 5×Ans-Me-0.409 7×Facial angle,N-Go=-4.588 2+0.472 4×N-Me,L1-Me=-12.590 5+0.5322×Ans-Me+0.124 3×∠Go.In average-angle group:Age=-2.944 1+0.146 8×N-Me,Ans-U1=18.917+0.476 4×Ans-Me-0.230 2×Facial angle,Ans-Me=-0.620 5+1.014 5×N-Me-0.974 1×N-Ans-0.057 6×Ar-Go,N-Go=1.631 1+0.897 8×S-Go+0.919 7×N-S+0.168 8×L1-Me,S-Ar=-1.823 1+0.845 3×S-Go-0.867 0×Ar-Go+0.202 4×L1-Me.In low-angle group:Age=11.740 6+0.152 7×S-Go-0.169 9×∠Go+0.252 5×L1-Me,N-Me=61.153 0+0.964 3×Ans-Me+0.628 6×N-Go-0.689 2×Facialangle,N-Ans=-4.949 2+1.065 8×N-Me-2.316 5×Ans-U1,Ans-Me=-25.180 0+0.418 4×N-Me+0.280 3×Facial angle+0.477 6×Ans-U1,N-Go=8.684 2+0.409 9×N-Me+0.403 3×S-Go.There was no significant difference between the predicted values of equation established with genetic algorithms and the measured data (P>0.05).Conclusion:The quantitative relationship equation of the crantiofacial vertical points in the skeletal class Ⅱmalocclusion patients with various vertical types established with genetic algorithms may show the vertical quantitative relationship and predict the growth to a certain degree.

Objective:To explore the mechanism of acupuncture and moxibustion for ulcerative colitis(UC)from the perspective of the P2X7 receptor(P2X7R)-nucleotide-binding oligomerization domain(NOD)-like receptor protein 3(NLRP3)inflammasome pathway. Methods:Sprague-Dawley rats were randomly assigned to a normal(N)group,a model(M)group,a herb-partitioned moxibustion(HM)group,and an electroacupuncture(EA)group.For modeling,the rats drank 4%dextran sulfate sodium for 7 d.Rats in the HM group and EA group received 7 consecutive days of HM or EA at bilateral Tianshu(ST25),respectively.The histopathological change in colon tissue was observed by hematoxylin-eosin(HE)staining;immunofluorescence staining was used to detect the protein expression of related molecules in the colon tissue,and enzyme-linked immunosorbent assay was used to detect the concentrations or contents of related molecules in the serum and colon tissue.Wild-type(WT)and P2X7R gene knockout(KO)mice were used to construct UC models,histopathological changes in the colon tissue were observed by HE staining,and the NLRP3 protein expression in the colon tissue was observed by immunohistochemistry. Results:Compared with the N group,the colon histopathological score in the M group was significantly increased,and the protein expression of P2X7R,NLRP3,apoptosis-associated speck-like protein containing CARD(ASC),Caspase-1,interleukin-1β(IL-1β),and interleukin-18(IL-18)in the colon tissue and the protein levels of IL-1β and IL-18 in the serum were significantly increased(P<0.05).Compared with the M group,the histopathological scores of the colon in the HM group and the EA group were significantly decreased,and the protein expression levels of P2X7R,NLRP3,ASC,Caspase-1,IL-1β,and IL-18 in the colon tissue and the protein level of IL-18 in the serum were significantly decreased(P<0.05).After UC modeling,the colonic mucosal epithelial damage and inflammatory cell infiltration in P2X7R KO mice were less than those in WT mice,and the NLRP3 protein expression in the colon was also decreased compared with that in WT mice(P<0.05). Conclusion:HM and EA at Tianshu(ST25)may inhibit the protein activities of P2X7R,NLRP3,ASC,and Caspase-1 in the colon tissue of rats with UC,thereby reducing the downstream molecules IL-1β and IL-18 in the P2X7R-NLRP3 inflammasome pathway to relieve UC inflammation.