OBJECTIVETo observe and evaluate the clinical performance of zirconia crowns made by CEREC inLab computer aided design/computer aided manufacturing(CAD/CAM) for posterior teeth.

METHODSA total of 242 patients were implanted with zirconia crowns fabricated by CEREC inLab CAD/CAM. The crowns were evaluated by Modified US Public Health Service criteria at baseline, 6, 12, 24, and 36 months. The chi-square test was used to analyze the survival rate.

RESULTSAll but five crowns were evaluated by an independent evaluator at baseline, 6, 12, 24, and 36 months. The survival rate declined with time. The A score percentage was above 85% at 36 months.

CONCLUSIONThe single zirconia crowns fabricated by CEREC inLab CAD/CAM demonstrate satisfactory clinical performance during a short period.

0.05) except for 8 kHz. Air conduction thresholds were basically normal in children's simple type CSOM, whereas hearing loss during intermediate frequency and high frequency in adults with osteitis and cholesteatoma type was more severe than that in children.Conclusion Hearing-loss in children's CSOM was the same as adult patients, although course of disease was not long in children. Inner ear was not or mildly impaired in children's CSOM.

Objective To observe the effect of three immunosuppressive agents on the function of human adult islets of langerhans in vitro, and explore the suitable immunosuppressive protocols for human islet transplantation.Methods In vitro, the isolated and purified islets were incubated with the immunosuppressive agents (mycophenolic acid, sirolimus, and FTY720) at different concentrations for 24 h, then stimulated by glucose at low ((2.8) mmol/L) and high ((16.7) mmol/L) levels. The (insulin) release after stimulations was detected using ELISA kit, and stimulation index was calculated.(Results) In control group (no agents exposure), the insulin release were ((7.37)?(1.74)) ng/ml at low (level) and ((15.15)?(5.39)) ng/ml at high level respectively, with stimulation index achieved to (2.06)?(0.46). Compared to control group, treatment with mycophenolic acid led to dramatic reduction of (insulin) release (P

Objective To lower immunogenesis of human adult islets,reduce the dose of immunosuppressors and promote wide development of transplantation of adult islets,isolated adult islets were in vitro pretreated.Methods Isolated adult islets were cultured at 24 ℃ for 2 days(24 ℃ group) or pretreated using MHC-II monoclonal antibody(monoclonal antibody and complements were added and cultivated for another day following one-day-24 ℃-culture,antibody group) as observation groups.Adult islets were cultured at 37 ℃ in CMRL 1066 medium plus 20 % fetal bovine serum for 2 days as control.The immunogenics of the islets was detected using lymphocyte-islet mixed culture(MILC) and immunohistochemical staining of HLA-DR and lymphocyte common antigen(LCA).The function and activity of the islets were identified using()~3H-leucine incorporation assay,insulin release test and in situ apoptosis assay.Results Compared with control,MILC stimulation index was remarkably lower in the antibody group(P(0.05)).The percentage of HLA-DR and LCA positive cells in the antibody groupand in the 24 ℃ group was much lower than that in control(All P

Objective To investigate the production of IL-17,IL-4 and IFN-γ in sputum of pediatric patients with asthma.Methods 61 pediatric patients with asthma in stage of exacerbation were enrolled as exacerbation group.and these patients in remission stage after therapy were enrolled as remission group, and 45 healthy children were chose as control group.The percentage of neutrophils and eosinophils were counted in regular way with sputum pigmentation,and the level of IL-17,IL-4 and IFN-γ were detected by enzyme-linked immunosorbent assay.Results IL-17 in exacerbation group Was highest among three groups, and IL-17 in remission group was higher than that in control group.In exacerbation group,IL-4 was higher and IFN-γ was lower than those in other two groups,and no significant difference Was found between remission group and control group.While in exacerbation stage,IL-17 was positive correlated with IL-4,and IFN-γ was negative correlated with IL-17 and IL-4.Conclusions IL-17 and IL-4 are related to the occurrence and exasperating of asthma,and IL-17 is suit for indicating the inflammation of asthma.IFN-γ is a protective factor of asthma.

Objective To investigate and analyze the relationship of the level of high-sensitivity C-reactive protein (hs-CRP) and carotid artery atherosclerosis with acute cerebral infarction (ACI).Methods Fifty-nine patients with ACI were assigned as experimental group and thirty healthy people as control group. The serum level of hs-CRP was measured, and the carotid plaques and the changes of carotid intimal-medial thickness (IMT) were examined by color Doppler ultrasonography.Then the relationship between the serum level of hs-CRP and the severity of disease was analyzed.Results The serum level of hs-CRP was higher in ACI group than in control group [(5.96± 1.52)mg/L vs. (1.78±1.02) mg/L, t=15.383, P＜0.01]. The detection rates of carotid plaques and the increased carotid IMT were higher in ACI group than in control group [77.97% vs. 36.67%, x2 =12.92, P＜0.01; (1.18±0.17) mm vs. (1.02±0.15) mm, t=4.544, P＜0.05]. The hs-CRP levels were higher in the severe cases [(15.68±1.45) mg/L] than in moderate cases [(4.16±1.39)mg/L] and mild cases [(1.88±0.34) mg/L, t=37. 217, 25. 243, both P＜0.01]. Conclusions The elevated levels of hs-CRP have overt clinical significances for the atherothrombotic cerebral infarction. Early determination of hs-CRP is helpful to evaluate patient's condition and prognosis.

AIM: To investigate the relationship between the expression of MMP-2, TIMP-2 and VEGF-C in hepatocellular carcinoma (HCC) with or without lymph node metastasis. METHODS: The expression of MMP-2, TIMP-2 and VEGF-C in 44 cases of HCC were examined using immunohistochemistry methods (SP).RESULTS: The positive expression of MMP-2, TIMP-2 and VEGF-C was associated with lymph node metastasis of HCC (P

OBJECTIVE By analyzing the high risk factors for pulmonary fungus infection in intensive care units of neurosurgery,this paper may be regarded as a good reference for early diagnosis and treatment. METHODS According to the domestic diagnostic standard on pulmonary fungus infection,we analyzed the clinical data of 58 patients with pulmonary fungus infection in department of neursurgery. RESULTS Totally 117 strains of fungi were isolated from the 58 cases.Candidiasis was the most frequent type,accounting for 92.3%.Some factors,such as the severity of underlying diseases,long-time coma,long-term use of broad-spectrum antibiotic,abuse of glucocorticoid,the open airway and some traumatic intubations might be regarded as the high risk factors for pulmonary fungus infection.Fluconazole showed good clinical effects on the treatment of fungus infection. CONCLUSIONS It is important to eliminate the high risk factors for pulmonary fungus infection,to provide early diagnosis and to use prophylactic antifungal agent,which can reduce the incidence rate of pulmonary fungus infection.

AIM:To explore the effect of HBV transfection on apoptosis induced by TWEAK and the regulatory effect of IFN-? on the apoptosis process.METHODS:BEL-7402-pCDNA3/1.1HBV hepatoma cell line was used as cell model in this experiment,in which BEL-7402 was stably transfected with pCDNA3/1.1HBV and its corresponding empty vector BEL-7402-pCDNA3 was used as control. The effect of HBV transfection on TNF-like weak inducer of apoptosis(TWEAK) induced hepatoma cell apoptosis was determined by CCK-8. The apoptosis before and after HBV transfection induced by TWEAK and the effect of IFN-? on apoptosis induced by TWEAK in HBV transfected hepatoma cells were detected by TUNEL and caspase 3 activity detection kit.RESULTS:BEL-7402-pCDNA3/1.1HBV and BEL-7402-pCDNA3 hepatoma cell line were successfully established and identified. Cell viability of hepatoma cells was increased after HBV transfection. The apoptosis rate was much higher after HBV transfection compared to the empty vector control and empty cell control. The apoptosis rate induced by TWEAK was much higher in BEL-7402-pCDNA3/1.1HBV cells when exposed to IFN-?.CONCLUSION:After HBV infection,TWEAK might be involved in the clearance of HBV infected hepatocyte by apoptosis and inflammatory factor such as IFN-?.

Objective To evaluate the value of ultrasound-guided nasotracheal intubation in the patients undergoing oral maxillofacial surgery by comparing with blind intubation.Methods Forty ASA physical status Ⅰ or Ⅱ patients of both sexes,aged 18-75 yr,weighing 45-90 kg,scheduled for elective oral maxillofacial surgery,were randomly divided into blind intubation group (group B,n =20) and ultrasound group (group U,n =20) according to a random number table.Nasotracheal intubation was performed after routine topical analgesia and conscious sedation.The front end of catheter was adjusted to the aditus glottidis according to the sound of respiratory air,and tracheal intubation was placed when the strongest inspiratory phase appeared in group B.A linear array probe (frequency 7-15 MHz) was used,and the images of glottis expansion and wired catheter insertion were visualized in the thyroid cartilage window in U group.Before intubation and at 0,1,3 and 5 min after successful intubation,mean arterial pressure (MAP),HR and SpO2 were recorded.The development of responses to intubation was recorded during intubation.The successful intubation at first attempt,the number of intubation,intubation time,and postoperative complications such as sore throat or hoarseness were recorded.Results Compared with group B,the number of intubation was significantly reduced,intubation time was shortened,the rate of successful intubation at first attempt was increased,the failure rate of intubation and incidence of sore throat and hoarseness were decreased,and no significant changes were found in the parameters of hemodynamics and incidence of responses to intubation in group U.No intraoperative awareness of intubation occurred in patients.Conclusion Compared with blind intubation,ultrasound-guided nasotracheal intubation can raise the probability of successful intubation at first attempt,reduce the number of intubation,and shorten intubation time,and it is safe and convenient and provides significant value clinically for the patients undergoing oral maxillofacial surgery.