Asians ; China ; Humans ; von Willebrand Diseases/therapy* ; von Willebrand Factor

ADAMTS13 Protein ; Asians ; China ; Humans ; Plasma Exchange ; Purpura, Thrombotic Thrombocytopenic/therapy*

BACKGROUND:Zirconia is considered to be one ofthe promising prosthodontics materials because of its high strength, high hardness, excelent wear resistance and excelent corrosion resistance. However, the development of zirconia is hindered owing to the uncertainty in long-term stability of zirconiaal-ceramic crowns such as the cracking (chipping) of veneering porcelain and deterioration of mechanical properties of zirconia dental crowns under intraoral conditions.
OBJECTIVE:To summarize the preparation of zirconia bioceramic and its application progress in the field of prosthodontics.
METHODS:The properties, crystal structure, preparation and use of zirconia in prosthodontics were reviewed. Reasons that affected the stability of zirconia were also discussed. The future development of zirconia was forecasted.
RESULTS AND CONCLUSION:Preparation of zirconia bioceramics involves the folowing aspects:powder synthesis, biscuit molding, and ceramic sintering.To improvethe istability of zirconia al-ceramic crowns,we optimize the preparation of zirconia powder topromotethe purity, mechanical properties, biological properties and stability. Furthermore, it is necessary to explore the effects of crystal nucleation, growth, second phase and grain size on crystal stability and biomechanical propertiesof thetooth abutment, as wel astoconduct an in-depth theoretical analysis on the effect oftooth abutmentand lattice matching of porcelain crowns on the interface.

Objective To study the management of enterostomy in children.Methods The clinical data of 425 cases of enterostomy in children were analyzed retrospectively.Results The primary diseases of 425 cases underwent enterostomy included:intestinal perforation(119 cases),intestinal necrosis(36 cases),necrotizing enterocolitis(45 cases),congenital megacolon(61 cases),congenital anal atresia with rectourethral fistula(86 cases),and congenital anal atresia with rectovaginal fistula(78 cases).Among the 425 cases,159 cases underwent small bowel enterostomy and 266 cases had colostomy;single-stoma enterostomy was done in 225 cases,and double-stoma enterostomy in 197 cases.Follow-up was acquired in 389 patients,and all the stomas were closed successfully.The closure time of small bovvel enterostomy was 1-3 month(ayerage 1.87 months)later,and of colostomy was 3-12 month(averag 4.95 months)later.Conclusions When an enterostomy is to be adopted in pediatric surgery,a suitable time and enterostomal location should be chosen according to the state of illness.The timing of enterostomy closure is also very important.

Objective To investigate the pathogentic factor of severe acute pancreatitis(SAP)-associated lung injury and the protective function of octreotide combined with alinastatin on SAP-associated lung injury in rats.Methods Eighty SD rats were randomly divided into 5 groups.Sham operative(S)group,SAP group,(octreotide)(O)group,ulinastatin(U)group and octreotide + ulinastatin (O+U)group,and each group was divided into 6h,12h sub-groups.After AP models were induced,the serum concentration of amylase(AMY),tumor necrosis factor?(TNF-?),malondiadehyde(MDA),and the concentration of(myeloperoxidase)(MPO) in lung tissue were determined;and the pancreas and lung pathology were graded,the changes of the above-mentioned indexes after using octreotide and ulinastatin were compared.Results(1)Compared to SAP group,AMY,TNF-?,MDA,MPO,and pancreas pathology score were decreased significantly in each of the 3 therapy groups during the same period;and at 12h,in O+U sub-group,lung pathology score also decreased compared to SAP group(P

0.05),but,serum AST and ALT were significantly decreased on the 12th hour in arterialization group(P

Objective To explore the value of procalcitonin (PCT)and interleukin -6 (IL -6)in the early diagnosis and prognostic evaluation of the patients with lumbar intervertebral disc herniation,and their correlation with the course and lumbar function.Methods 100 patients with lumbar disc herniation (study group)and 35 patients with lumbar non -borne diseases (control group)were collected,their preoperative clinical symptoms were scored on the basis of the lumbar scoring system of Japanese Orthopaedic Association (JOA),the enzyme -linked immunosor-bent assay was applied to determining the content changes of PCT and IL -6 of the two groups,and the linear correla-tion analysis was used to explore the relevance of PCT and IL -6 to the course.Results The contents of the PCT and IL -6 in the study group's serum were respectively (25.13 ±0.86)ng/L and (10.26 ±0.36)ng/L,while those in the control group's serum were respectively (223.85 ±0.61)ng/L and (50.11 ±1.23)ng/L,both with statistical sig-nificance (t =2.542,2.206,P <0.01).The IL -6 was positively correlated with the disease duration of the patients with lumbar disc herniation (r =0.32,P =0.000),and negatively correlated with their JOA score (r =-0.45,P =0.003),and the PCT was positively correlated with the patients'disease duration (r =0.35,P =0.001),and nega-tively correlated with their JOA score (r =-0.53,P =0.005).Conclusion The PCT and IL -6 have a certain role in the early diagnosis of lumbar disc herniation,and have some relevance to the course of disease and the lumbar func-tion changes.

Objective To establish a molecular typing method (opa-typing) for Neisseria gonorrhoeae, and to evaluate its performance based on epidemiological data. Methods Twenty-six gonorrhea patients were recruited from March to April 2006 at two sites, including 17 cases from the STD Clinic of Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College and 9 cases from the STD Clinic of Shandong Provincial Institute of Dermatology. Of the 26 patients, 6 were from three known sexual links, while the remaining 20 patients did not have any sexual contact with each other. The opa gene was amplified by using PCR from Neisseria gonorrhoeae isolates from these patients followed by overnight digestion with restriction enzymes Taq Ⅰ and Hpa Ⅱ. The enzyme digestion band patterns were analyzed using the Cel-Compar program. Results The opa gene was successfully amplified from all the 26 Neisseria gonorrhoeae strains, and restrictedly digested by endonucleases Taq Ⅰ and Hpa Ⅱ . Identical band patterns were observed between patients with sexual links, but not among the remaining 20 patients. Conclusions The results of opatyping of Neisseria gonorrhoeae coincide with the information on sexual behaviour provided by patients. Opatyping may serve as a reliable tool in sexual network analysis.

Objective To compare the inhibition effect of budesonide suspension and dexamethasone on the rats′ pneumonic anaphylacticitis and serum IL-5,and study the effect mechanism in treatment of asthma with glucocorticoids on systemic administration and with budesonide suspension.Methods Twenty-six health wistar rats were randomly divided into normal group,asthmatic group,budesonide suspension group and dexamethasone group.Asthma models were sensitized with egg albumin.Before sensitized,budesonide suspension group were administered inhalation of budesonide suspension,and dexamethasone group were administered abdominal injection of dexamethasone.The level of IL-5 was measured with enzyme linked immunosorbent assay(ELISA) reagent box,lung was eviscera-(ted after collecting) blood,pathological slice was made.Results The rats′ pathological changes of lung and bronchus were significant between asthma group and other groups,while there were no significant difference between budesonide suspension group and dexamethasone group,but both of two groups showed slight difference with normal group.Compared with normal group,the level of serum IL-5 in asthma group raised obviously,and there was significant difference(P0.05).Conclusions The treatment of inhalation of budesonide suspension can inhibit rats′ pneumonic anaphylacticitis,ameliorate rat anaphylactic asthma symptom.

Objective To compare the effects of pressure bandage with ultrasound-guided compression repair (UGCR) for femoral artery pseudoaneurysms (FAPs) after percutaneous coronary intervention. Methods One hundred and five patients with FAPs were enrolled in the study. Patients were classified into 2 groups (UGCR vs pressure bandage) according to different treatment modalities,and clinical status and therapeutic effects were compared. Results There were no differences between the two groups in gender,age,body mass index,type of intervention,sheath size,anti-platelet agents,low molecular weight heparin,systolic blood pressure and diastolic blood pressure during the procedure. The successful repair rate was higher in the UGCR group than that of the pressure bandage group (85% vs 63%,P =0.03). No complications occurred in both groups. Conclusion UGCR is simple and safe with low cost and complications,which can be used preferably for FAPs repair.