Animals ; Dental Implantation, Endosseous ; Dental Implants ; Dental Implants, Single-Tooth ; Denture, Complete, Immediate ; Denture, Partial, Immediate ; Humans ; Immediate Dental Implant Loading ; methods ; Jaw, Edentulous ; rehabilitation ; Jaw, Edentulous, Partially ; rehabilitation ; Mandible ; Maxilla

Proteomics has been applied in a wide range of biomedical research.However,the application of proteomics in studying the molecular mechanism of morphine dependence is only at a preliminary stage.This article introduced the application of proteomics techniques in the study of the molecular mechanism of morphine dependence and the discovery of several potential molecular markers of morphine dependence,which affirmed the importance and potential of proteomics in this research area.Also,it was pointed out that the major tasks of current proteomic study of morphine dependence should include establishing animal and cell models of morphine dependence,selecting appropriate sample source and improving proteomics techniques,so that proteomics can serve as a new approach in the study of morphine dependence to discover new therapeutic targets.

Aim To investigate whether acteoside can protect the dopaminergic(neurons,)(SH-SY5Y)(cells,) from rotenone-induced apoptosis.Methods Cell viability was analyzed by MTT assay.The neurons were stained with the fluorescent dye,Hoechst 33342,to analyze the nuclear change.Flow cytometry was used to determine neuronal apoptotic peak quantitatively.The level of intracellular reactive oxygen species(ROS) was monitored using the fluorescent probe 2′,7′-dichlorofluorescin-diacetate(DCFH-DA).Results ①SH-SY5Y cells treated with 0.5 ?mol ?L~(-1) rotenone for 48 h had a significantly decrease on cell viability compared with control,and the percentage of apoptosis was increased to 47.39%.The cell bodies of most cells shrinked and the dendrites of most cells became shorten or broken.Meanwhile,the shrinkage,condensation and cleavage of nuclei in most cells could be observed.The level of intracellular oxygen species was enhanced.② The preincubation with acteoside(10,20 or 40 mg?L~(-1)),one of the phenylethanoids isolated from Cistanche salsa,for 6 h enhanced the cell viability,and improved the rotenone-induced cell morphological change.Moreover,the percentage of apoptosis was significantly decreased to 25.87%,23.97% and 10.45% in a dose-dependent manner.The enhancement of ROS induced by rotenone was inhibited by 20 mg?L~(-1) acteoside.Conclusion These results demonstrate that acteoside can protect SH-SYSY cells against rotenone-induced apoptosis.The neuroprotective effect might be related with the function that acteoside can reduce the level of ROS.

Objective To investigate the changes in 20S proteasome activities in the brain and spinal cord of acute and chronic morphine-dependent mice.Metbods Male ICR mice,weighing 25-30 g,were used in the study.The experiment was performed in 2 parts.In experiment Ⅰ,16 mice were randomly divided into 5 groups (n =8 each) using a random number table:control group (group C) and acute morphine dependence group (AMD group).In experiment Ⅱ,16 mice were randomly divided into 5 groups (n =8 each) using a random number table:control group (group C) and chronic morphine dependence group (CMD group).Acute morphine dependence was induced with morphine 100 mg/kg injected subcutaneously,and the mice were sacrificed 3 h later.Chronic morphine dependence was induced by increasing doses of morphine for 4 days,the initial dose of morphine was 20 mg/kg injected subcutaneously twice a day and was increased by 10 mg/kg every day,the dose of morphine was 10 mg/kg injected subcutaneously on 5th day,and then the mice were sacrificed 1 h later.In group C,the equal volume of normal saline was given instead,and the other treatments were similar to those previously described in morphine dependence groups.After the mice were sacrificed,the hippocampus,prefrontal cortex,striatum and spinalcord were isolated for determination of 20S proteasome activity,measured as chymotrypsin-like (ChT-L),trypsin-like (T-L) and peptidylglutamyl-like hydrolyzing (PGLH) activities.Results Experiment Ⅰ Compared with C group,PGLH activity in the spinal cord and T-L activity in the striatum or prefrontal cortex were significantly weakened in group AMD.There was no significant difference in 20S proteasome activity in the hippocampus between the two groups.Experiment Ⅱ Compared with C group,ChT-L and T-L activities in the spinal cord were significantly weakened,and PGLH activity in the striatum was enhanced in CMD group.There was no significant difference in 20S proteasome activity in the prefrontal cortex and hippocampus between the two groups.Conclusion 20S proteasome activity in the spinal cord and brain is weakened in acute morphine-dependent mice,20S proteasome activity in the spinal cord is weakened,20S proteasome activity in the striatum is enhanced in chronic morphine-dependent mice,these changes have specificity in terms of position and type of activity,and the changes mentioned above may be related to development of morphine dependence in mice.

OBJECTIVE: To study the expression of Endophilin II and VEGF-C in human Laryngeal cancer and its relationship with the clinical treatment effect. METHOD: The expression and distribution of Endophilin II and VEGF-C protein were checked in 47 patients with laryngeal carcinoma in our hospital in 2006-09-2009-10 and 23 samples of normal tissues around the cancer by immunohistochemical staining SP method. After an appropriate surgical treatment, patients accepted a 5-year followup to evaluate their recurrence situation and 5-year survival rate. RESULT: Immunohistochemistry showed that Endophilin II protein was strongly positive expressed in normal tissues around the cancer (positive rate 82.61%). And the expression level was dependent on the lymph metastasis, T stage and lymph invasion (P < 0.05). Patients with positive Endophilin II expression had a higher survival rate and better recurrence situation. Expression of VEGF-C was significantly higher in laryngeal carcinoma than in normal tissue around the cancer (positive rate 51.06% and 13.04%). the expression level was dependent on the lymph metastasis and lymph invasion (P < 0.05), and negatively correlated with recurrence and 5-year survival rate. CONCLUSION Endophilin II and VEGF-C may involve in laryngeal cancer, and the expression of Endophilin II and VEGF-C has a positive correlation with pathological features and lymph metastasis, and both are related with recurrence and 5-year survival rate. So these two proteins are likely to be a potential target for diagnosis and treatment of laryngeal cancer.
Humans ; Immunohistochemistry ; Intracellular Signaling Peptides and Proteins ; metabolism ; Laryngeal Neoplasms ; metabolism ; pathology ; Lymphatic Metastasis ; Neoplasm Recurrence, Local ; Survival Rate ; Vascular Endothelial Growth Factor C ; metabolism

Objective To evaluate the value of volume rendering technique of MSCT in the diagnosis of pediatric pectus carinatum. Methods MSCT data of 36 children with pectus carinatum were collected.Volume rendering and multiplanar reformation recon-struction techniques were adopted at a postprocessing station.Results There were 35 cases of chondrogladiolar variant and 1 case of chondromanubrial variant,27 cases were symmetric and other 9 cases were asymmetric.VR technique clearly demonstrated the abnormal changes of sternum,costae and costal cartilages.Conclusion VR technique of MSCT can fully display the three-dimension morpho-logical changes of pediatric pectus carinatum,which can supply accurate information for minimally invasive treatment procedure.

Objective To investigate lead pollution of tap in market. Methods 16 taps (2 PPR taps and 14 metal taps)were collected and were sunk in distilled water for 4 hours,8 hours and 12 hours. Lead levels in the distilled waters were determined by atomic absorption spectrometry. Results No lead was detected for PPR taps. Of 14 metal taps,only one tap was not observed lead pollution. The top lead level was 56.54 ?g/L,the median was 5.79 ?g/L. These brass taps resulted in higher lead pollution than those taps with ceramic preformed core (P0.05). 72.2% of the samples with brass preformed core exceeded 10 ?g/L and only 9.5% for those taps with ceramic preformed core. These taps with registered trade mark had a slighter lead contamination than those without registered trade mark(P

Objective To establish an immunoassay based on microfluidic chip for detection of TSH and total T4.Methods The direct-write laser micromachining technology was used to fabricate microfluidic chip,luminol-H2O2 as luminator.This method and Roche E2010 electrochemiluminescence immunoassay were used to examine TSH by double-antibody sandwich method and total T4 by competitive principle in 50 serum samples collected at our outpatient clinic.Results The detection was completed within 25 min.Ten microliter sample and reagent was required.The detection range of TSH was 0-50 ?IU/ml and its average intraassay and interassay precision was 4.7% and 4.6% respectively and its average recovery rate was 95.3%.The detection range of T4 was 9.375-300 ng/ml,and its average intraassay and interassay precision was 4.9% and 4.7% respectively and its average recovery rate was 91.27%.Conclusion Rapid detection of TSH and T4 by microfluidic chip-based immunoassays is convenient,stable and accurate and of less reagent and time consuming.

Thirty-one patients were investigated with radionudide ventri -culography for assessment of tlhe effects of Nifedipine ( NIF ) on the LV function^ NIF improves the pumping function of LV, markedly , after oral therapy, Mean LVEDV increased 15ml/mz, mean LVESV decreased 2.4ml/m2 and SV increased 17 ml/m2._ LVEF increased to 0. 56 ( P

Objective Celloidin sections of temporal bone were used to develop a serial stereo anatomical atlas of temporal bone by computer aided three dimensional(3-D) reconstruction and stereology. Methods Fifty sets of serial celloidin sections of temporal bone with reference points were prepared and 3-D morphology of structures in temporal bone was restored systemically by the technique of computer aided 3-D reconstruction. A system of stereo anatomical atlas of temporal bone with stereoscope was established. Results Totally 48 cases of reconstruction were accomplished for bony and membranous labyrinth, ossicles, tendons, facial nerve and its canal, round window membrane and niche, posterior ampullary nerve, endolymphatic sac, cochlear aqueduct, VII and VIIIth cranial nerve. The stereo picture pairs of these structures with the best representation were selected as the stereo anatomical atlas of temporal bone which showed the fine spatial morphology and relationship of the above structures. The stereo anatomical atlas was applied to guide ear surgery and to assist anatomic training of temporal bone. Conclusion The stereo anatomic atlas of temporal bone is an innovative powerful anatomic tool and has tremendous application futures in otology, or even in the whole medical science.