Humans ; Immunoglobulin G ; Sialadenitis

Granuloma, Giant Cell ; Humans ; Jaw Diseases ; pathology

Objective To observe the therapeutic effects of combination of TCM with western medicine for depressive neurosis.Methods The therapeutic group included 30 cases,patients were treated by combination of TCM with western medicine.The control group included 30 eases,patients were treated only with western medicine.Four weeks was a course of treatment.Results The efficacy of the therapeutic group was 96.7% ,the efficacy of the control group was 66.7% ,there is a significant difference between the two groups(P <0.01).Conclusion The combination of TCM with western medicine for depressive neurosis is effective with short course of treatment.

0.05). Significant difference was observed between Group C+D and Group A+B(P

Objective　To investigate the correlation of pathology to immunology in animals with tuberculosis by molecular pathology. Methods　BALB/c mice were randomly divided into two groups: tuberculosis model (A) and control mice (N). Immunohistochemistry technology was used to investigate the correlation between the expression of IFN-γ, IL-4 and iNOS and the type as well as magnitude of tissue injury. Results　Two phases were observed during the 2nd week characterized by inflammatory infiltration in the alveolar-capillary interstitium and the tissues surrounding blood vessels. A predominance of TH1 cells was shown by a higher percentage of IFN-γ positive cells and a lower percentage of IL-4 positive cells in the inflammatory infiltrate identified by immunohistology. From the 4th week after infection to the end of experiment, we observed a chronic advanced phase characterized by pneumonia and local necrosis with a TH0 balance due to an equivalent proportion of IFN-γ and IL-4 positive cells in the lung lesions. The iNOS expression was increased in acute phase and decreased in chronic phase. Conclusion　There is a closely correlation on the kinetics of TH1/TH2 cells and iNOS expression with the type and magnitude of tissue injury during the infection of tuberculosis.

Objective To assess the usefulness of a computer-aided detection(CAD)system on detecting the pulmonary nodules in digital chest radiography.Methods Three hundred and twenty-eight digital chest radiographies along with corresponding chest computed tomography were selected for this study. Two senior chest radiologists interpreted these cases using the CAD system and marked the locations and sizes of all nodules with consensus,which were stored in a computer system as Gold Standard to evaluate the performance of the CAD system.Eight radiologists of various experience read these selected cases without and with the aid of CAD system and their results were stored in a computer system.The radiologists' performance was evaluated by using the receiver operating characteristic analysis.Comparison is made regarding the difference in Az values when CAD was not used versus when CAD was used by using the paired-samples t test.Results For small nodules,the sensitivity of this computer system used by the two senior chest radiologists in 100 digital radiographs was 78.1%(118.0/151).Without and with the assistance of CAD system,the nodule detection sensitivity of the radiology residents was 62.4% (94.2/151),77.4%(116.8/151)respectively,and the area under the curve of radiology residents was 0.769,0.836 respectively.Statistical analysis showed there was statistically significant difference between interpretation without and with the CAD system(P0.05).Conclusions This CAD system can help to enhance the radiologists' ability to detect small pulmonary nodules.This is especially helpful for radiology residents.

Objective:To investigate the influences of material properties and damping effect on the dynamic response analysis of human periodontal ligament. Methods: A 3-D finite element model of human teeth and periodontal tissue was built from graphic information obtained by CT scanning. Dynamic analysis was performed to investigate the influence of different damping effects on the stresses of periodontal ligament by the finite element method. Results: (a) No significant difference of stress between small and large deformation assumption was found, the variation was no more than 1.4%.(b) Dynamic response was obtained under ? varies from 0 to 1.2. After one mastication period, the residual stress at interior surface was larger than that at exterior surface, with a maximum value of ? r = 0.34 MPa at labial cervical area. Conclusion: Appropriate assumptions on material properties may reduce the cost of analysis. After one mastication period, some levels of residual stresses are in periodontal ligament and influenced by material damp.

Objective:To improve stress analysis in stress-intensive regions of human periodontal tissue. Methods:Based on coarse analysis on the finite element(FE) model including human teeth and periodontal tissue, the submodel method was introduced to analyze the stresses in interested region such as apical. Results:Submodel analysis showed same stress distribution as FE model while more precision of stress value was obtained by submodel because refined mesh was used.Conclusion:More accurate stresses measurements in local regions can be obtained by submodel method.

Humans ; Saliva ; physiology ; Salivary Gland Diseases