3.Clinical study of the emodin thermosensitive hydrogel in the treatment of chronic periodontitis
Bing ZHAO ; Quan ZHAO ; Wei PENG ; Yu MU
Chinese Journal of Primary Medicine and Pharmacy 2010;17(16):2165-2167
Objective To evaluate the clinical effects of scaling and root planning combined with application of the emodin thermosensitive hydrogel on periodontitis. Methods Forty patients with chronic periodontitis with a total of eighty teeth were included in the study.For each patient after scaling and root planning,the teeth on one side were assigned as the test group and treated with the emodin thermosensitive hydrogel in the pocket once a week for four weeks.The teeth on the other side were assigned as the control group.All the clinical parameters were recorded at the baseline,the 6th week and 12th week after the treatment. Results At the baseline,there was no difference in the clinical parameters between the test group and the control group(P>0.05).A statistically significant improvement of all clinical parameters was observed in both groups 6w later(t = 39.06、62.76、20.50、8.05、158.32、31.45、46.53、8.43、8.08、8.03)(P<0.01=,and all clinical parameters of the test group were better than those of the control group,the differences were statistically significant(t = 31.50、27.91、3.92、7.38、20.09)(P<0.01=. Conclusion The emodin thermosensitive hydrogel could effectively control the symptoms of periodontitis.
4.On Cultivating Teamwork among Medical Students
Huimin LIANG ; Wei ZHAO ; Feng ZHAO ; Bing YAN
Chinese Medical Ethics 1996;0(01):-
Modern medical staff are facing the challenge to survive in competitions and develop through cooperation.Thus it is of great importance for the future medical staff,that is,medical students to cultivate and enhance their teamwork for future demand.Cultivating approaches mainly include creating a collaborative environment,carrying out cooperative scientific research,creating teamwork in the curriculum,and launching community service activities.
5.Clinical analysis of chronic hepatitis B virus carriers and chronic hepatitis B diagnosed through pathology
Fang YANG ; Bing ZHAO ; Mingxiang ZHANG ; Wei WANG ; Ni WEI
Chinese Journal of Infectious Diseases 2012;30(2):95-99
Objective To compare the clinical data of patients with chronic hepatitis B virus (HBV) carriers and chronic hepatitis B so that to provide pathological evidence for management of chronic HBV carriers with different alanine aminotransferase (ALT) levels.MethodsLiver biopsies were performed in totally of 292 cases of chronic HBV infection.The subjects were divided into HBV carrier group (G0-G1 and S0-S1) and hepatitis group (G> 1 and/or S> 1) according to the pathological diagnosis. The relationships between different age subgroups, different ALT level subgroups and pathological diagnosis were analyzed. Meanwhile,other clinical,biochemical,and iconographic indexes which were possibly related to the pathology diagnosis were compared. The multivariate analysis was done by Logistic regression equation (withdrawal method, maximum likelihood method) to definite the independent influencing factors of pathologically diagnosed with chronic HBV carrier.ResultsAmong the 292 patients,140 (47.9%) were pathologically diagnosed with chronic HBV carries and 152 (52.1%)were chronic hepatitis B. There were statistical differences between ≤35 years group and 36-40 years,>40 years group (x2 =3.936 and 8.534,respectively; P =0.047 and 0.003,respectively). There were statistical difference among patients with ALT<0.5×upper limit normal (ULN),(0.5-1.0) ×ULN,(1.1-1.5) ×ULN,(1.6-2.0) ×ULN and >2.0 × ULN (x2 =55.314,P<0.01),while there was no significant difference between (1.1-1.5) × ULN and >2.0 × ULN (x2 =3.810,P=0.051). Multivariate analysis indicated that course of disease,alcohol consumption,ALT,HBV DNA level and the surface of liver (smooth or not smooth)detected by ultrasonography were independent influencing factors of pathological diagnosis of chronic HBV carriers (OR =0.995,0.224,0.516,1.308 and 0.270,respectively; P=0.005,0.007,0.000,0.025 and 0.001,respectively).ConclusionLiver biopsy is much meaningful in patients with age >35 years old and ALT (1-2)× ULN.
6.Effect of occlusal contacts on stress distribution in the dentin and peridentium after post-core crown restoration
Wei YAO ; Weiyi CHEN ; Bing LI ; Bin ZHAO ; Wei WANG
Chinese Journal of Tissue Engineering Research 2017;21(4):615-620
BACKGROUND:The post-core crown system is an effective method for dental defect repair, but its repair outcomes are influenced by various factors;thereby, a further study is needed to optimize this method.OBJECTIVE:To investigate the stress distribution in different degrees of dental defect after post-core crown restoration under different occlusal contacts. METHODS:Three-dimensional models of the mandibular first molar were established by CT images, and models of complete natural teeth, six different defected teeth (total maxil ofacial slight and severe defects, distal middle maxil ofacial slight and severe defects, proximal middle maxil ofacial slight and severe defects) and two different post-core crowns (fiber post and zirconia post) were created by software. These models were imported into ANSYS software to analyze the stress distribution in dentin and periodontium under stable occlusal contact (ABC) and unstable occlusal contact (AC), respectively. RESULTS AND CONCLUSION:The stress in dentin and the periodontium after post-core crown restoration under AC was obviously higher than that under ABC, and AC affected the restored teeth more markedly. The post-core crown material with higher elastic modulus could induce higher stresses, and severe defected teeth showed higher stress distribution. Different defected types made no overt effects on the stress distribution in the periodontium. These results suggest that the B area contact is critical in regulating occlusal contacts of restoration.
7.Effect of locally administered rapamycin and cyclosporin A on penetrating keratoplasty rejection rat model
Bing, LI ; Jing, HONG ; Jie, WEI ; Li-Yan, ZHAO
International Eye Science 2006;6(2):271-274
· AIM: To evaluate the combined effect of rapamycin ophthalmic solution and cyclosporin A ophthalmic solution on allogeneic transplantation in a rat model.rats were used as donors. The animals were randomly assigned to 4 groups. Group A: control (ophthalmic solution solvent 100μ L); group B: 2g/L rapamycin ophthalmic solution 100μ L; group C: 10g/L cyclosporin A ophthalmic solution 100μ L; group D: 2g/L rapamycin ophthalmic solution 50μ L and 10g/L cyclosporin A ophthalmic solution 50μ L, 4 times every day. The treatment was started on 2d after operation, and the animals were administered until rejection. The grafts were inspected by slit-lamp microscope and the corneal survival time was recorded. The pathologic changes were measured by light microscope.significantly prolonged compared with the control group (P < 0.01). However, the combined therapy (group D) was significantly superior compared with group B and C (P<0.05, P< 0.01). The histopathological findings showed that the inflammation cells, neovascularity in each treated group were significantly fewer than that in control group at 14d after operation.a double drug regimen with rapamycin ophthalmic solution and cyclosporin A ophthalmic solution for the control of acute corneal allograft rejection. It indicats that the combined therapy produced synergistic effect.
9.Distribution of Cd,P, S, K, Ca,Cu and Zn Elements in Indian Mustard by LA-ICP-MS
Hongxia YANG ; Linghao ZHAO ; Jinxu GAO ; Wei LIU ; Bing LI
Chinese Journal of Analytical Chemistry 2014;(3):355-359
Imaging of trace metal distribution in the cadmium ( Cd) hyperaccumulator Indian mustard by laser ablation inductively coupled plasma-mass spectrometry ( LA-ICP-MS ) was typically performed using spatial resolutions of 25 μm. Indian Mustard was submitted to 50 mol/L Cd for 14 days exposure and analysed using Nd:YAG laser (213 nm) . Intensities of 13 C, 34 S, 39 K, 44 Ca, 66 Zn, 111 Cd, 65 Cu and 31 P were measured by ICP-MS to study elemental distribution. Preferential Cd accumulation in vascular bundles was observed in stem tissue, whereas Cd was mainly localized to the mesophyll and vascular cells. The high relationship between Ca and Cd distribution indicated that the two elements had a very similar pathway. In vivo analytical method developed in this work was useful to study spatial element distribution across stem samples and had great potential for applications in other areas of plant pathology research.
10.Resting state functional magnetic resonance imaging in patients with first-episode major depression disorder
Bing ZHAO ; Guoqiang WEI ; Liying HOU ; Cheng XU ; Kerang ZHANG
Chinese Journal of Behavioral Medicine and Brain Science 2014;23(4):334-337
Objective To explore the abnormally functional brain region in resting state in first-episode major depression disorder patients with function magnetic resonance imaging.Methods 51 patients diagnosed with first-episode major depression disorder according to DSM-Ⅳ and 50 gender-,age-,and education-matched healthy controls completed resting state fMRI scan.The severity of depression,and unpredicted homodynamic responses across the whole brain were analyzed using Hamilton depression scale,regional homogeneity and amplitude of low-frequency fluctuation,respectively.Results Compared with control group,the right medial frontal gyms (BA6,MNI:3,-3,63,K=34) and left medial frontal gyrus(BA9,MNI:-9,36,30,K=10) (P<0.001,uncorrected) in the case group showed higher regional homogeneity,with statistical significance.Compared with control group,right medial frontal gyrus (BA6,MNI:3,-3,63,K =35) and right posterior cingulated gyrus (BA31,MNI:3,-36,36,K =11) (P< 0.001,uncorrected)in the case group showed higher amplitude of low-frequency fluctuation,with statistical significance.Conclusion First-episode major depression disorder patients in resting state had several abnormally functional brain regions,which might be related to the pathological mechanism of depression disorder.