The tri-plate horizontal mould with nonrigid surgical sponge inserts was developed to establish an industrial system for shaping surgical sponge which is used for cataract operation. The conception on an insertion mechanism of nonrigid flat inserts was firstly suggested by us. The prototype horizontal moulds with tri plate have been designed and manufactured. The experiment results of hundred thousand of times injection shaping have proved that the conception of the design is rational. The structure of shafting mould for nonrigid flats has been confirmed. Present article discussed the design and working mechanism of the insertion in the horizontal injection mould.

[Objective]Observe the clinical effect of leverage replacement manipulation on lumbar intervertebral disc herniation.[Method]299 hospitalized patients were divided into two groups.153 cases were in trial group and 146 patients were in controlled group.Trial group accepted constant traction and leverage replacement manipulation.While the controlled group accepted the same traction and muscular massage.[Result]In trial group,90 patients were cured,57 improved and 6 no improvement.The total effective rate was 96.08%;in controlled group,21 were cured,75 cases improved,and 50 no improvement.The total effective rate was 65.75%.The effect of trial group was better than the controlled group(P

Objective To explore the expression characteristic of T regulatory cell (Treg)/T help cell (Th)17 and the correlation to disease progression in chronic hepatitis B (CHB) patients undergoing antivirus treatment,and to explore their roles in pathogenesis of CHB.Methods A total of 53 patients with CHB (CHB group) and 21 healthy controls (healthy control group) were selected,CHB patients included mild 18 cases,moderate 16 cases and severe 19 cases.The expression of Treg and Th17 were detected by flow cytometry and compared.The levels of alanine aminotransferase (ALT),total bilirubin (TBIL),cholinesterase,albumin were measured by automatic biochemical machine and for correlation analysis.Results The levels ofTh17,Treg,Treg/Th17 were (2.13 ± 0.65)％,(2.99 ± 0.68)％ and (6.07 ± 1.18)％,(5.14 ± 0.96)％ and 2.86 ± 0.67,1.73 ± 0.45 in CHB group before and after treatment for 24 weeks and (3.59 ± 0.75)％,(4.02 ± 0.77)％,1.04 ± 0.34 in healthy control group.There were significant differences (F =14.78,10.12,17.19; P ＜ 0.01).The level of Th17 in mild,moderate and severe CHB was gradually decreased,but there was no significant difference (F =1.10,P =0.337).The level of Treg in mild,moderate and severe CHB patients was gradually increased,but there was no significant difference (F =0.54,P =0.585).The level of Treg/Th17 was gradually increased with aggravation (2.58 ± 0.59,2.76 ± 0.63,3.21 ± 0.71),and there was significant difference (F =3.15,P ＜ 0.01),the level of Treg/Th17 in severe CHB patients was significantly higher than that in mild,moderate CHB patients (P ＜0.05).The level of Treg/Th17 had significantly positive correlation with ALT,TBIL (r =0.272,P=0.000; r =0.226,P=0.000).Conclusion Treg/Th17 balance not only relates with the pathogenesis of CHB,but also with the related immune inflammatory of liver tissue.

AIM To explore the effect of tacrolimus on maturity and allostimulatory activity of cultured dendritic cells (DC) in vitro. METHODS Twenty rats were randomly divided into 4 groups: control, tacrolimus, LPS, and tacrolimus+LPS groups. The bone marrow cells of rats were cultured with granulocyte-macrophage colony-stimulating factors and interleukin-4 (IL-4) for 6 d and the DC which adhered to the wall were harvested. No other extraneous reagents were used in control group. Tacrolimus 10 μg·L-1 was added to tacrolimus group at the beginning of culture. Lipopolysaccarides (LPS) 100 μg·L-1 were administered 18 h beforeharvest in LPS group. In tacrolimus+LPS group, tacrolimus and LPS were used in accordance with tacrolimus and LPS groups. The immunophenotypes of DC were analyzed with flow cytometry and the level of IL-12 secreted by DC was detected by ELISA. The allostimulatory activity of DC on allogeneic T cells was assessed with mixed lymphocyte reaction. RESULTS Compared with control group, LPS increased CD80 and CD86 expressions, IL-12 secretion and allostimulatory activities of DC. Compared with control and LPS groups, tacrolimus cut down the expressions of CD80 and CD86, decreased the secretion of IL-12 and reduced the allostimulatory activity of cultured DC. CONCLUSION Tacrolimus exerts a negative effect on the maturation and allostimulatory activity of cultured DC in vitro.

BACKGROUND: Immune tolerance is regarded as the most effective measure to overcome rejection. For the past few years, the important effect of immature dendritic cells (imDCs) on immune tolerance has drawn close attention. OBJECTIVE: To study the effect of imDCs treated with tacrolimus (FK506) on imlnune tolerance in rat allograft organ transplantation and to investigate the mechanism of immune tolerance induced by imDCs. DESIGN: A randomized and controlled animal experiment. MATERIALS: The experiment was carried out at the Experimental Animal Center, the Affiliated Hospital of Medical College. Qingdao University from April 2006 to December 2006.Cervical heart transplantations were performed in which 45Wister rats were used as donors and45 SD rats as allograft recipients. The ratswere randomly divided into three groups with 15 for each. METHODS: Normal sodium, imDes. and imDCs treated with FK506 were injected via vena caudalis seven. days before the operations respectively. Mixed lymphocyte reaction (MLR) was meas ured on SD, Wistar, and Lewis rats. MAIN OUTCOME MEASURES: Heart allografi survival was monitored and one-way MLR, heart pathology and the levels of interleukin-2(IL-2),IL-4,IL-10,and interferon-Y(IFN-Y)in the serum were detected. RESULTS: In treatment group without FK506.heart allografl survival were prolonged after imDC injection(P＜0.01);while their survival were prolonged further in treatment group with FK506(P＜0.05).MLR showed that the tolerance was donor specific. Analysis of variance showed that tere was high significant difference for serum concentrations of IL-2,IFN-Y,IL-4,and IL-10 in the three groups(P＜0.01).The concentrations of IL-2 and IFN-Y expressing on Th1 were lower. and that of IL-4 and IL-10 expressing on Th2 were obviously higher in the latter two groups. CONCLUSION: ImDCs can induce immune tolerance in rat heterotopic heart transplantation successfully; ImDCs treated with FK506 can enhance the tolerance which is donor specific.ImDCs may induce the immnune tolerance bymeans of modifying the immune response type of T cells (immune deflection from Th1 to Th2), mediating the generation of regulatory T cells (T-reg)and inducing T cells disenabling.

Objective To investigate the inductive factors, the prevention and treatment methods of pulmonary edema during pregnancy Methods The clinical materials of 21 cases of preganacy with pulmonary edema treated in our hospital from Jan 1985 to Jan 2000 were analysed retrospectively Results Among 21 patients, 26 pulmonary edema attacked, 9 of them had upper have respiratory diseases, thirteen cases caused by improper infusion Fourteen cases were well controlled quickly with antiplasm nifedipine, myocardial streng and diuretics If the symptoms could not be controlled properly, vasodilators were applicated We had 16 cesarean section under epidural anaesthesia, one vaginal birth, and the other one birth by forceps Conclusions Pulmonary edema in pregnancy usualluy followed with acute heart failure caused by sever pregnancy induced hypertension We should pay more attention to the indications of it During treatment,we should give vasodilators properly,so as to prevent pulmonary edema

Objective To study the compatibility and feasibility of construct tissue engineer bladder through biocompatibility of hair follicle stem cells (HFSCs) and heterogeneous bladder acellular matrix (BAM) in vitro and vivo.Methods The third-generation of rat HFSCs were cultured with the two-step enzymatic and different adhesion time method.The cells were identified by flow cytometry through detection expression of β1 integrin FITC-Conjugated.The New Zealand rabbit BAM were decellularized by the method of microdissection and chemical washing,and then examined by Masson staing and electron microscope to confirm no cell elements remained.The HFSCs of the rats were implanted in BAM and cultured for about 24 hours.Then the cells growth conditions on the material surface were examined by histology and scanning electron microscopy.The cells-scaffold composites were implanted in rats subcutaneously,samples and histological examination were harvested at 1,2 and 4 weeks after implantation.Results The BAM was white and translucent membranous.There were fiber network structures without cell elements remained under the examination of electron microscope.And the BAM prompted for collagen tissue composition under Masson staining,without significant residual cells.The growth condition of HFSCs beside the BAM was well that observed by inverted microscope at 48 h of co-culture.After 1 week the HFSCs extended and adhered to the matrix surface observed under the scanning electron microscope.No significant inflammatory response in rat subcutaneous implantation experiments,the single-layer cell structure in histological examination could be seen after 1 week,and multi-layer cell structure in histological examination could be seen after 4 weeks of implantation.Conclusion The biocompatibility of HFSCs and heterogeneous BAM is good,which provides a good experiment support for HFSCs to repair the bladder defects disease.

BACKGROUND:Both Ms Coat and Green OrTM desensitizers can seal dentinal tubules effectively, isolate the dentinal tubule from external stimuli and also reduce the dentinal hypersensitivity. The scholars around the world have discussed their effects from the descriptive and qualitative view.
OBJECTIVE:To quantitatively assess and compare the sealing effects of Ms Coat and Green OrTM desensitizers on dentine tubules.
METHODS:Thirty fresh human third molar samples were made into 3-mm dentin specimens that were treated with 17% EDTA for 2 minutes and randomly divided into three groups: Ms Coat group, Green OrTM group and control group with no treatment. In the former two groups, MS Coat desensitizer and Green OrTM desensitizer were applied respectively on the dentin surfaces. Scanning electron microscope was used to observe the dentin surface and longitudinal sections.
RESULTS AND CONCLUSION: (1) Surface observation: In the control group, al of the dentinal tubules were exposed; in the MS Coat group, it was observed that almost al the dentinal tubules were obliterated; in the Green OrTM group, the dentin tubules were covered with irregular crystaline substance and only a smal number of exposed dentine tubules were visible but narrowed obviously. (2) Longitudinal profile observation: In the control group, the dentin tubules were strip-shaped and arranged in paralel without any blockage; in the MS coat group, the tubules were covered with dense sediments, and the dentinal tubules were basicaly closed; in the Green OrTM group, there were scaly crystaline material deposited within the dentinal tubules. Dentinal diameter and number of dentinal tubules were ranked as folows: control group > Green OrTM group > MS Coat group (P < 0.05). Both Ms Coat and Green OrTM desensitizers can occlude the tubules effectively, and moreover, the MS Coat is superior to the Green OrTM.

Drooling in waking in children older than 4 years is considered as abnormal, which may be resulted from the saliva control barriers in children with cerebral palsy, and impair their nutrition, sociality and mental health, etc. Evaluation of salivation can be subjective and objective, which including visual analogue scale, Teacher Drooling Scale, Drooling Frequency and Severity Scale, drooling quotient and Drooling Impact Scale, etc., in the former, and Saxon test and swab approach, etc., in the latter. The treatment mainly included oral move-ment training, correcting pathological factors, biofeedback, medicine and surgery. Physiotherapy and acupuncture were also reported for sali-vation in children with cerebral palsy.

Objective To explore the clinical curative effect of electromyographic biofeedback on pointed foot in children with spastic cerebral palsy. Methods From June, 2014 to December, 2015, 80 children with spastic cerebral palsy and pointed foot were divided into con-ventional group (n=40) and electromyographic biofeedback group (n=40). The conventional group received exercise and massage, while the electromyographic biofeedback group received electromyographic biofeedback in addition. The passive range of motion (PROM) of ankle, the surface electromyographic results and the selective control results were compared before and eight weeks after treatment. Results After treatment, the PROM significantly decreased in both groups (t>9.142, P<0.001);the integrated electromyography and root mean square, and the selective control increased in both groups (t>3.456, Z>3.178, P<0.01), which were better in the electromyographic biofeedback group than in the conventional group (t>3.737, Z=-2.748, P<0.01). Conclusion Electromyographic biofeedback can further improve the foot dor-sal flexure and pointed foot gait of spastic cerebral palsy children.