Objective To investigate the effect of compound preparation of Astragalus mongho-licus on subsets of lymphocytes in patients with myasthenia gravis (MG), and to explore its regulatory mechanism. Methods 60 MG patients were randomly divided into test group (n=30, given compoundpreparation of Astragalus mongholicus for 12 wks) and control group (n=30, given prednisone tablets for 12 wks). Flow cytometry was applied to examining the distribution change of the subsets of lym-phocytes in patients before and after treatment. Results After treatment, the percentages of CD4+ T cells and the ratio of CD4+/CD8+ in both groups decreased compared with those before treatment.The ratio of CD4+/CD8+ in test group was significantly lower than that in control group (P<0.05).The percentage of CD8+ T cells in test group after treatment increased significantly (P<0.05) com-pared with that before treatment, but had no significant difference compared with that in control group(P>0. 05). Conclusion The result from the current study suggests that one of the mechanisms of the compound preparation of Astragalus monghoticus regulating immune response may be achieved through its modulating effect on the distribution of subsets of lymphoeytes and humoral immune func-tion.

Objective　To verify the effect of prolactin (PRL) on the development and progression of experimental autoimmune thyroiditis (EAT) in SD rats and the inhibitive effect of bromocriptine (BRC) on the development of EAT. Methods　SD rats were injected with BRC to inhibit the development of EAT and the change of PRL were observed. Results　High level of serum PRL was found in the EAT rats ［(8.70±0.42)μg/L, P＜0.01 vs. control (6.46±0.67) μg/L］ , and there was also high levels of thyroid autoantibodies (thyroglobulin antibody, thyroid peroxidase antibody) . However, in rats receiving BRC, the levels of thyroid autoantibodies decreased as the PRL level declined (5.30±0.81)μg/L and the thyroid lesions were mild. Conclusion　Hyperprolactinemia plays a role in the development of EAT and control of the hyperprolactinemia with BRC may afford therapeutic benefit.

Objective To observe the influence of individual behavior intervention on emotion and quality of life of elderly females with stress urinary incontinence and provide guidance for health intervention.Methods 124 elderly females with stress urinary incontinence were selected.Individual behavior intervention was used,and after 1,3,6 months,the effect was evaluated by anxiety,depression,ICIQ -FLUTS,UDI -7,and SCL -90.Results After the individual behavior intervention,anxiety and depression scores became lower[anxiety scores:before intervention (59.16 ±6.12)points,1month (52.68 ±5.62)points,3months (48.28 ±5.32)points,6months (39.86 ± 4.27)points,there were statistically significant differences between the two groups(F =298.69,P =0.000).Depres-sion scores:before intervention (59.16 ±6.12)points,1 month (52.68 ±5.62)points,3 months (48.28 ± 5.32)points,6 months (39.86 ±4.27)points,there were statistically significant differences between the two groups (F =252.10,P =0.000)].ICIQ -FLUTS and UDI -7 scores became less[ICIQ -FLUTS scores:before interven-tion (31.79 ±3.74)points,1 month (29.62 ±3.18)points,3 months (27.54 ±2.67)points,6 months (23.32 ± 2.16)points,there were statistically significant differences between the two groups(F =161.15,P =0.000).UDI -7 scores:before intervention (19.29 ±1.76)points,1 month (16.09 ±1.48)points,3 months (14.32 ±1.37)points, 6 months (11.57 ±1.26)points,there were statistically significant differences between the two groups(F =531.23, P =0.000)].There were significant differences in somatization,obsession,sensitivity of interpersonal relationship, depression,anxiety,hostility,fear,crankiness and psychotic diseases(somatization scores:F =18.933,P =0.000;obsession:F =5.153,P =0.000;sensitivity of interpersonal relationship:F =3.314,P =0.020;depression:F =9.306,P =0.000;anxiety:F =4.902,P =0.002;hostility:F =6.852,P =0.000;fear:F =7.782,P =0.000;cranki-ness:F =11.917,P =0.000;psychotic diseases:F =8.560,P =0.000).Conclusion After the individual behavior intervention,anxiety,depression,ICIQ -FLUTS,UDI -7,and scl -90 scores become lower.Individual behavior inter-vention has a positive effect on emotional states and quality of life,which is worthy of clinical promotion.

MIC.RESULTS The bacteriostatic/bactericidal CFR of 0.5g q8h imipenem/cilastatin and 0.5g q8h meropenem were the highest(100%);that of 3.375g q4h sodium piperacillin/tazobactam sodium against ESBLs-producing E.coli was above 90%;the CFRs of ceftriaxone(1g q24h,2g q24h),ceftazidime(1g q8h,2g q8h),cefepime(1g q8h,1g q12h,2g q8h) and cefoperazone sodium/sulbactam(0.5g q8h,1g q8h,2g q8h) against ESBLs-producing strains were clearly less than those of non-ESBLs-producing ones,and the CFRs could not be effectively improved with the dose and frequency increased.CONCLUSIONS The PK/PD simulation is useful to optimize the regimen of anti-infective treatment,and guide its dosing accurately.

Endodontic microsurgery is a vital treatment modality for teeth with persistent periradicular pathoses that have not responded to nonsurgical retreatment. The principle is to determine the reason for failure, completely eliminate the infection and promote periapical healing. Within recent years, endodontic microsurgery has evolved to become standardized and presents with a high success rate. However, its outcome is still influenced by many factors, including anatomy, periodontal condition, crown-to-root ratio, occlusion, the type of periradicular lesion, and prosthesis. Moreover, endodontists always concentrate on “the apex”, paying little attention to the general preoperative evaluation, accurate diagnosis, and comprehensive treatment plan. This article reviews the latest literature on these issues and the clinical experience of our research group and discusses the correlation between endodontic microsurgery and other oral disciplines, including periodontology, prosthodontics, oral implantology, oral and maxillofacial surgery and orthodontics. The oral interdisciplinary assessment should be made with comprehensive consideration of the root canal system, periradicular lesion, adjacent anatomical relationships, periodontal condition, occlusion, and esthetic rehabilitation. Based on these findings, the continuity of treatment will be optimized, and the best treatment plan will be proposed to provide clinical strategies for the diagnosis and treatment of complex periradicular diseases.

Dental operating microscope is recommended to complicated root canal therapy, for it could provide increased lighting and superior magnification, so that the survival rate of tooth is highly increased. More refined access of cavity preparation, canal cleaning, shaping and obturating are realized under microscope. This article combined literature reviews with the writers’ clinical experience, and it aims at helping clinicians to improve their ability to more accurately performance and minimally invasive endodontic procedures, such as locating hidden canals obstructed by calcifications, canals reduced in size, removing materials, reducing ledge formation, apical transportation, and repairing perforations.

Implant-overdenture supported by an interforaminal bar provides stability and is effective in an edentulous atrophic mandible. However, using this attachment requires precise planning from the restorative and surgical aspects to ensure a satisfying outcome. Consdering the feature and space requirements for bar attachment, this article establishes a clinical protocol for a two-implant-retained overdenture on the mandible. In this study, a case of mandibular edentulism was considered to illustrate this protocol and provide a reference for clinical practice.

Provisional restorations are beneficial to final restorations. However, the importance of provisional restorations is often overlooked because they are designed to function for a limited period. This article summarizes the clinical values and two common materials of provisional restorations.

BACKGROUND:Pain after arthroscopic treatment can not only affect the patient’s life quality, and is not
conducive to the early reasonable exercise and functional recovery of the patients after treatment. Up to 2012, there are 18 randomized placebo-control ed trials on intra-articular injection of bupivacaine for analgesia after arthroscopic surgery, but the results are different.
OBJECTIVE:To examine the efficacy and safety of intra-articular injection of bupivacaine in the management of pain after arthroscopic surgery through randomized placebo-control ed trials.
METHODS:The MEDLINE database, Cochrane Central Register and Google Scholar database were retrieved for the randomized control ed trials on intra-articular injection of bupivacaine in the management of pain after
arthroscopic surgery up to April 2012. The key words were“bupivacaine, intra-articular, arthroscopic, postoperative pain, placebo”.
RESULTS AND CONCLUSION:Eighteen studies (n=934) were included (461 cases in bupivacaine group and 473
cases in the placebo control group). The Meta-analysis results showed the visual analog scale score of the bupivacaine group was lower than that of the placebo control group (weighted mean difference:-1.39, 95%confidence interval:-2.17 to-0.61, P<0.000 01), and the number of patients required supplementary analgesia was less than the placebo control group (relative risk:0.84, 95%confidence interval:0.62 to 1.66, P=0.010). The time from first supplementary analgesia to postoperative intra-articular injection in the bupivacaine group was longer that in the placebo control group (weighted
mean difference:157.72, 95%confidence interval:16.43 to 299.01, P<0.000 01). There was no significant difference in the incidence of side effect between two groups (relative risk:0.64, 95%confidence interval:0.29 to 1.44, P=0.48). On the basis of the currently available literature, the intra-articular of bupivacaine after arthroscopic surgery can significantly relieve pain without increasing the adverse reactions when compared with the placebo control group.

Objective To explore the effect of high voltage alternating electric field therapy on fracture healing in rats. Methods An animal model of cortical bone defect was successfully established in the unilateral proximal tibia of 41 rats.They were then randomized into an experimental group (21 rats) and a control group (20 rats).The animals in the experimentsl group were given high voltage alternating electric field therapy for 30 minutes daily,while those in the control group only had sham exposure to the high voltage alternating electric field therapy.Rats in each group were sacrificed at days 7,14,21 and 28 post-operation.After blood collection,the operated tibias of the rats were resected with muscle and other soft tissue removed.Bone mineral density (BMD) of the callus at the fracture point was measured using dual energy X-ray absorptiometry (DEXA).The calluses were then cut down and fixed,decalcificated and sliced for histological observation.At the same time serum osteocalcin ( OC ) and bone alkaline phosphatase (RAP) were also detected by ABC-ELISA. Results The BMD examination showed that callus BMD in the experimental group was significantly higher than in the control group at days 14 and 28.Serum OC and RAP in the experimental group were also higher at days 14 day 21,and OC was still significantly higher in the experimental group at day 28.Histological examination showed that in the early stages of bone healing hematoma absorption and organization appeared earlier in the experimental group than in the control group,with remarkable osteoblast and chondroblast proliferation.While at the later stage,bone trabeculas connection and mineralization also appeared earlier in the experimental group than in the control group. Conclusions High voltage alternating electric field therapy may promote fracture healing by accelerating hematoma absorption and organization,elevating osteoblast proliferation and differentiation as well as promoting extracellular matrix secretion and mineralization.The underlying therapeutic mechanism might be related to the increased expression of OC and RAP caused by exposure to the high voltage alternating electric field.