BACKGROUND:As a kind of fiber composite resin adopt the technology of fibre reinforcement composites, the everStick high-strength fiber composite resin has been applied in the field of dentistry prosthodontic treatment restoration.
OBJECTIVE:To summarize the research condition about the material performance and clinical application of the everStick high-strength fiber composite resin
METHODS:We searched the Medline, CNKI, and WanFang database in computer (from January 2000 to August 2013) using the keywords of“everStick high-strength fiber composite resin, material performance, clinical application”in English and Chinese.
RESULTS AND CONCLUSION:The everStick high-strength fiber composite resin has the unique structure of IPN, and has the characteristics of simple operation, minimal y invasive, higher strength, strong cohesive force and reversibility. Because of the minimal y invasive, the everStick high-strength fiber composite resin can retain the healthy tissue of tooth with whole hog and provide the possibility for other therapeutic method because of the reversibility. At the present time, the everStick high-strength fiber composite resin has already been extended in the fields of post core, periodontal splint, orthodontic retainer, ful crown, adhesive fixed bridge, fixed bridge, inlay fixed partial dentures, dental implant restoration and the base in removable partial denture. But whether the material can be made into resin veneer and be used in color front teeth, for instance, the dental fluorosis, tooth discoloration after root canal therapy, tetracycline pigmentation teeth and hypoplasia of enamel, there is lack of comprehensive studies.

BACKGROUND:The fiber-reinforced composite resin adhesion fixed bridge produced by everStick fibre reinforced composites is a kind of minimaly invasive fixed prosthesis technology in recent years, which is wel thought of patients and clinicians because of its smal tooth preparation, high success rate of bonding, good esthetic effects, strong mechanical properties and easy to intraoral repair. OBJECTIVE:To investigate the advantage of everStick fibre reinforced composites on too smal anterior edentulous space restoration. METHODS:A total of 23 patients with maxilary lateral incisor missing and with smal edentulous space were colected and renovated with everStick fibre reinforced composites produced by StickTech in Finland. RESULTS AND CONCLUSION:everStick fibre reinforced composites for repair of too smal anterior edentulous space with adhesion fixed bridge could not only avoid the overclosed occlusion on adjacent teeth like fixed denture, but also avoid the usage of clasp and uncomfortableness such as removable denture. During the folow-up of 6-30 months, 23 patients had no signs of loosening, debonding, fracture, excessive wear, secondary caries, margin dying of restoration and exhibited good margins and composite luting-cement interface, unchanged color, good esthetic effects. The patients were very satisfied with the restoration. The results indicate that everStick fibre reinforced composites for restoration of too smal anterior edentulous space can achieve good abrasion resistance and high mechanical strength, unchanged color, have little damage to abutment and have good esthetic effects.

Objective To evaluate the application of diffusion-weighted MR imaging in hepatic echinococcosis.Methods Diffusion-weighted MR imaging and measurement of apparent diffusion coefficient (ADC)were performed in 23 patients with 30 hepatic echinococcosis(cystic echinococcosis 24, alveolaris echinococcosis 6).Results The mean ADC values of cystic echinococcosis, alveolaris echinococcosis and normal liver were (3.50?0.35)?10 -3 mm2/s,(2.22?0.22)?10 -3 mm2/s and (1.41?0.09)?10 -3 mm2/s respectively.The difference between the mean ADC values was significant(?

OBJECTIVE:To investigate the effects of triptolide(TP)on the proliferation of fibroblast-like synoviocytes(FLS) from patients with rheumatoid arthritis(RA)in vitro. METHODS:5 RA patients received knee arthroplasty or synovectomy to ob-tain synovial tissue. FLS was isolated,cultured and identified,and then incubated in the presence of TP [0 (blank control),50, 100 and 200 nmol/ml] for 24,48 and 72 h. The effects of TP on FLS was evaluated by MTT,and then proliferation inhibitory rate was calculated;flow cytometry was used to detect the apoptosis and cell cycle of FLS. RESULTS:The inhibitory rates of TP(50, 100 and 200 nmol/ml)on the proliferation of FLS were 17.46%-52.56%,which was positively correlated with drug concentration. Compared with blank control group,100 and 200 nmol/ml TP could increase the percentage of cells in G0/G1 phase and decrease the percentage of cells in S phase,with statistical significance(P<0.05);200 nmol/ml TP could induce cell apoptosis. CONCLU-SIONS:TP could inhibit the proliferation and also could induce the apoptosis of FLS in RA patients in vitro,which may be one of its mechanism for treating RA.

BACKGROUND:Femoral neck fracture combined with femoral shaft fracture as a high-energy injury exhibits some difficulties in its clinical treatment because of bone chips and bone defects. Bone and cel transplantations have been used recently in order to effectively fil the bone defect area. OBJECTIVE:To explore the therapeutic effect of bone transplantation versus cel transplantation for treatment of femoral neck fracture combined with femoral shaft fracture. METHODS: A retrospective analysis was performed in patients with femoral neck fracture combined with femoral shaft fracture, who respectively underwent internal fixation with bone transplantation, tissue transplantation and cel transplantation. Perioperative indexes, incidence of complications and Harris scores were observed and compared. RESULTS AND CONCLUSION: (1) Femoral neck fractures are most commonly classified into Garden type, AO type and Pauwel type. Fracture classification aims to unify standards, which is easy to guide treatment and scientific research. (2) Internal fixation with bone transplantation and tissue transplantation is easy, safe and effective to promote fracture healing and improve hip function, which is an effective way to repair femoral neck fractures with femoral shaft fractures. (3) Compared with autogenous bone graft, alograft transplantation materials as finished products have a variety of sources, and have indications and efficacy similar to non-vascularized bone graft, which are suitable for clinical practice, but long-term effects need to be furtherexplored. (4) Internal fixation with cel transplantation is simple, reliable and effective for femoral neck fractures with femoral shaft fractures, which provides a new idea to reduce the early incidence of femoral head necrosis.

Objective To obtain the incidence of “clopidogrel low response”( CLR ) of acute coronary syndrome ( ACS ) patients after percutaneous coronary intervention ( PCI ) by Thrombelastography ( TEG) and Light transmission aggregometry( LTA) ,and explore the correlation of CLR with clinical related factors and major adverse cardiac events.Methods This study is a cohort study.214 ACS patients in the Department of Cardiology of Peking University People′s Hospital,who were ready to treat with PCI between May 2014 and November 2014 were enrolled.Among them, 168 cases(78.5%) were male with an average age of (61.32 ±10.79) years;46 cases(21.5%) were female with an average age of (68.72 ±8.38) years.The clinical data were recorded, such as history of present illness, the past medical history, clinical medication, and the results of coronary angiography.After taken clopidogrel 75 mg per day at least for 4 days,all patients were detected the contribution from ADP-stimulated platelets to maximal clot strength by TEG( TEG-ADP-Inhib), and detected ADP induced maximal platelet aggregation ratio by LTA ( LTA-ADPMAX ) .The occurrence rate of CLR was calculated, and the correlation between results of the two assays were anylysed.Patients were divided into two groups according to CLR.Univariate analysis was used to compare the difference of clinical data between CLR group and non-CLR group, then Logistic regression analysis was conducted to find out the related risk factors that may influence the occurrence rate of CLR.Compare the correlation between CLR and MACE according to 6-month followed-up.Results There was negative correlations between LAT and TEG in the adenosine diphosphate induced platelet reactivity ( r=-0.282,P=0.000).CLR was found in 115 (53.7%) patients by LTA and in 74(34.6%) patients by TEG and the difference between the two CLR ratio was significant (χ2 =10.486, P =0.001 ) .There were significant differences in age,smoking history and prior PCI/CABG history between CLR group and non-CLR group according to LTA grouping(t=2.829,P=0.005;χ2 =11.058,P=0.001;χ2 =4.252,P=0.039), and there was significant differences in history of cerebrovascular accident between CLR group and non-CLR group according to TEG grouping (χ2 =4.584, P=0.032 ).Logistic regression analysis showed smoking history was the protective factor for CLR ( OR=0.390,P=0.001) , while history of cerebrovascular accident was the independent risk factor (OR=2.499,P=0.037) for CLR.According to 6-month followed-up, the incidence of clinical ischemic events and bleeding events in CLRLTA group was 5.2%and 0 respectively, in N-CLRLTA group was 10.1% and 3% respectively;the occurrence rate of clinical ischemic events and bleeding events was no significant difference between two groups(χ2 =1.834,P=0.176;χ2 =1.682,P=0.195).The incidence of clinical ischemic events and bleeding events in CLRTEG group was 8.1% and 0 respectively, in N-CLRTEG group was 7.1%and 2.1%respectively;the occurrence rate of clinical ischemic events and bleeding events was no significant difference between two groups(χ2 =0.065,P=0.798;χ2 =0.432,P=0.511 ).Conclusions The correlation between the testing results of TEG and LTA in ACS patients treated with clopidogrel was poor, CLR ratios detected by two assays were significantly different.Smoking history was the protective factor for CLR , while history of cerebrovascular accident was the independent risk factor for CLR.CLR was not the risk factor for MACE in ACS patients.

Inhibitor of DNA binding 1 (ID1) has an aberrantly high expression in multiple cancer tissues, including colon cancer, lung cancer, breast cancer, and so on, which is closely related to cancer aggressiveness and poor clinical outcomes in cancer patients. It has been reported that ID1 maintains colorectal cancer cells (CRCs) stemness traits and contributes to the CRC drug resistance. While, the biological molecular mechanisms have not been fully elucidated. In this research, we found that ID1 upregulates octamer binding transcription factor (OCT4) protein level as well as OCT4 signaling pathway via Western blot, gene set enrichment analysis (GSEA), dual-luciferase reporter assay, and real-time PCR. Through the in vitro sphere formation assay, we found that overexpression of OCT4 reverses the inhibitory effect of knocking down ID1 on CRC sphere formation ability. With the help of JASPAR and GEPIA database, we predicted a novel transcriptional repressor—forkhead box D3 (FOXD3) of OCT4. Finally, by using co-immunoprecipitation (Co-IP), confocal and real-time PCR, we demonstrated that ID1 interacts with FOXD3 to inhibit its transcriptional repression activity and therefore to upregulate OCT4 transcription and OCT4 signaling pathway. In conclusion, this study provides a new theoretical basis for the regulation mechanism of colon cancer stem cells, and the newly found protein-protein interaction of ID1-FOXD3 provides a potential drug target for the therapy of CRC.

OBJECTIVETo study the correlation between arachidonic acid (AA) and acute red blood cells damage in rats, and to build a model with hidden blood loss in vivo, and to explore the pathological mechenism of hidden blood loss.

METHODSA total of 50 male adult Sprague-Dawley rats weighing (200 ± 20) g were randomly divided into five groups (n = 10): control group and four experimental groups. The rats in the experimental groups were given 0.5 ml different concentrations of AA dilu- ents, 5, 10, 20, 40 mmol/L respectively. The blood samples were collected from orbital venous at the beginning and 24, 48, 72 hours after administration. Then the changes of hemoglobin (Hb) ,red blood cell count (RBC), glutathione peroxidase (GSH- PX) activity, total superoxide dismutase (T-SOD) activity and hydrogen peroxide (H202) in the blood samples were tested.

RESULTSSignificant hidden blood loss occurred when the concentration was 10 mmol/L in the experimental group, with the RBC and Hb sharply reduced in blood samples. The Hb and RBC were reduced in all the experimental groups and control group at 24 hours after administration, while in the experimental groups they changed more obviously. The GSH-PX activity, T-SOD activity and H₂O₂were also significantly reduced in all groups, and the changes showed significant differences. The Hb and RBC were relatively stable in the control group and the experimental groups at 48 hours after administration; while GSH-PX activity, T-SOD activity and H₂O₂were all significantly decreased, and the changes in the experimental groups were more notable.

CONCLUSIONElevated levels of AA in the blood causes oxidative stress in the red blood cells, leading to the damage of red blood cells and hemoglobin, which is responsible for hidden blood loss.

Animals ; Arachidonic Acid ; toxicity ; Erythrocytes ; drug effects ; metabolism ; Glutathione Peroxidase ; blood ; Hemoglobins ; analysis ; Male ; Rats ; Rats, Sprague-Dawley ; Superoxide Dismutase ; blood

OBJECTIVETo investigate the expressions of serine-threonine kinase (Akt)/mammalian target of rapamycin (mTOR)/p70 S6K in oral squamous cell carcinoma (OSCC) and provide references for early diagnosis and prognosis evalua- tion of OSCC.

METHODSA total of 51 cases of OSCC, 10 cases of paracancerous mucosa, and 10 cases of normal oral mucosa were collected. The expressions of Akt/mTOR/p70 S6K in these cases were detected using the SP method of immunohisto- chemistry. The correlation between their expressions in OSCC was also analyzed.

RESULTSThe positive expressions ofp-Akt, p-mTOR, and p70 S6K in OSCC were significantly higher than those in normal oral mucosa and paracancerous mucosa. The expressions of p-Akt, p-mTOR, and p70 S6K in OSCC were not correlated with age, gender, and clinical stage; by comparison, these expressions were correlated with lymph node metastasis and pathological grade. Strong positive correlations were also observed between the expressions ofp-Akt, p-mTOR, and p70 S6K in OSCC.

CONCLUSIONAkt/mTOR/p70 S6K signaling molecules exhibit active expressions in OSCC and may be implicated in the occurrence and development of OSCC.

Aged ; Animals ; Humans ; Mouth Neoplasms ; Neoplasms, Squamous Cell ; Phosphorylation ; Protein Kinases ; Protein-Serine-Threonine Kinases ; Proto-Oncogene Proteins c-akt ; Ribosomal Protein S6 Kinases, 70-kDa ; Signal Transduction ; Sirolimus ; TOR Serine-Threonine Kinases

Objective To investigate the infection status of human papillomavirus (HPV) of females in Chongqing city ,in or‐der to provide scientific references for prevention of HPV infection and control of early cervical lesions .Methods The detection re‐sults of cervical cytology screening for 19 860 females in the University‐Town Hospital of Chongqing Medical University ,the First Affiliated Hospital of Chongqing Medical University and a county‐level hospital in Chongqing from January 2012 to January 2015 were collected ,and the HPV typing data were analysed .Results Among the 19 860 females ,5 681 females were infected with HPV ,the infection rate was 28 .61% .Due to the presence of multiple infection ,the actual infection frequency of HPV subtypes in 5 681 females was 8 906 .The infection frequency of high‐risk subtypes ,including multiple infections ,was 6 166 (accounted for 69 .23% ) .According to the probability of infection ,the top eight rate of subtype infection was HPV 52 ,16 ,58 ,6 ,CP8304(81) ,33 , 53 and 18 .The positive rate of single HPV infection was 19 .38% ,the positive rate of multiple infection was 8 .74% ,in which doub‐le infection was the main infection model .The infection rate of females aged 20 years old or less(43 .89% ) was the highest ,while have the infection rate of females aged 36-50 years old was the lowest(27 .26% ) .Conclusion The HPV infection rate of females in Chongqing is high ,the most of females infected by high‐risk subtype HPV .It is necessary to lay emphasis on preventing HPV 52 , 16 ,58 ,33 ,18 infection for females in Chongqing city .