Objective To observe the level of homocysteine(Hcy),high sensitive C-reactive protein(hs-CRP)and D-Dimer(D-D) in peripheral blood of patients with coronary heart disease,and to explore their values in clinical diagnosis of the coronary heart dis-ease(CHD).Methods Total of 95 patients with coronary heart disease were selected including 27 patients with AMI,42 patients with UAP and 26 patients with SAP.50 health examination volunteers were served as contro1.The levels of Hcy,hs-CRP and D-D were measured.Results The levels of Hcy in AMI group,UAP group and SAP group were significantly higher than those in con-trol group(P <0.05).The levels of hs-CRP and D-D in AMI group and UAP group were significant higher than control group and SAP group(P <0.05).The level of hs-CRP in SAP group was much higher than the control group(P <0.05),whereas the level of D-D in SAP group was not significantly different from control group(P <0.05).Conclusion The changes of serum levels of Hcy, hs-CRP and D-D are related with the occurrence and development of CHD.The joint detection of Hcy,hs-CRP and D-D can better reflect the severe degree of CHD,and could be helpful for early diagnosis,therapy and prognosis of CHD.

Objective To explore the therapeutic method and efficacy of discoid meniscus urder arthroscope. Methods 37 patients with 37 discoid menisci underwent arthroscopic lateral partial or total meniscectomy. 33 cases were operated on by reshaping (partial meniscectomy) and 4 cases with extensive laceration in the joint capsule rim of hastring tendon underwent total meniscectomy under arthroscope. Results Bases on Ikeuchi's grading, 19 cases were excellent (51.4%), 13 cases good (35.1%) and 5 cases fair(13.5%). Conclusions Arthroscopic reshaping for discoid meniscus can obtain excellent and good efficacy, so it is recommended that patients with discoid menisci should be treated by reshaping.

Objective To study the expression of protein kinase B (Akt/PKB) isoforms in the gastrocnemius muscle of rats at different ages. Methods The expression levels of mRNA and protein of three Akt isoforms in the gastrocnemius muscle of 30-month-old and 6-month-old rats were detected respectively by RT-PCR and Western blotting. Data were analyzed statistically. Results (1) The levels of Akt1 and Akt2 mRNA in the 30-month-old rats was significantly higher than those in the 6-month-old rats (t=7.124, P=0.000; t=2.598, P=0.021), however, no significant difference was found in the level of Akt3 mRNA between the two groups (t=0.460, P=0.653) . (2) The level of Akt-Thr308 phosphorylation in the 30-month-old rats was significantly lower than that in the 6-month-old rats (t=-9.861, P=0.000), while the level of Akt2 protein in the 30-month group was significantly higher than that in the younger rats (t=7.522, P=0.000). No significant differences were detected in the levels of Akt1 and Akt3 proteins between the two groups (t=0.469, P=0.646; t=0.058, P=0.955). Conclusion The expression levels of three Akt isoforms in the gastrocnemius muscle of rats change with age, suggesting that the three isoforms of Akt have different functions in the gastrocnemius muscle metabolism of rats at different ages.

Objective To observe the change of brain iron content in deep gray nucleus using susceptibility weighted imaging (SWI) in patients with Parkinson's diseases (PD). Methods The SWI examination was performed in 40 PD patients (10 patients with Hoehn-Yahr stage Ⅰ , 9 patients with Hoehn-Yahr stage Ⅱ , 9 patients with Hoehn Yahr stage Ⅲ , 6 patients with Hoehn-Yahr stage Ⅳ, 6 ptients with Hoehn Yahr stage Ⅴ ) and 33 gender- and age- matched controls, after conventional brain magnetic resonance imaging examination on a 3.0T magnetic resonance imaging.The signal values of substantia nigra zona compacta (SNc), substantia nigra zona reticulate (SNr),red nucleus (RN), putamen (Pu), globus pallidus (GP) and caudate nucleus (CN) were assessed.Results Compared with the controls, the PD patients had statistically significance of signal value differences of SNc (P=0.002), SNr (P=0.043). RN (P= 0.003), Pu (P=0.023). GP (P=0.001) andCN (P=0.033). The more significant differences of SNc(P=0.001), SNr (P=0.010),RN (P＜0. 001 ), Pu (P=0. 008), GP (P＜0. 001) and CN (P=0. 011) were observed between more severe PD lesion and control. The signal values of SNc and GP showed obviously negative correlations with Hoehn-Yahr grading (SNcr=-0.943. P＜0.001; GPr=-0.923, P＜0.001). But there was weakly correlation of the signal values of SNr, RN, Pu, CN with Hoehn Yahr grading (SNr r=0. 496. P=0.001; RN r=-0. 480. P=0.002; Pu r=-0. 494, P=0.001; CN r=-0.471, P=0.002) Conclusions Measurement of the brain iron content of SNc and GP using SWI on MRI is a reliable means of diagnosing PD, and it has significant correlation with Hoehn-Yahr grading, It could evaluate the severity of PD.

Objective:To evaluate the effect of different polishing instruments on the microstructure of composite resin.Methods:Specimens of 5 kinds of resins were randomly divided into three groups and were polished with Astropol(group A),Sof-Lex(group B) and Super-snap(group C)respectively(n=3 for each resin).Specimens of natural enamel surface were used as the controls(group D).The surface roughness(Ra)and microstructure of the specimens were evaluated by an atomic force microscope(AFM).Results:Ra value in group A was lower than that in group B(P=0.015);Z350 XT resin obtained the lowest Ra value among the 5 kinds of resin specimens(P<0.05).All of the resin specimens had similar average Ra after polishing procedure(P>0.05).Conclusion:Astropol polishing instrument is better than Sof-Lex;Z350 XT has better polish performance.The three polishing instruments are ef-fective in polishing the 5 composite resins.

Objective To assess the clinical results of antiglide plate in the treatment of the Danis Weber type B aged ankle fracture. Methods Totally 36 aged cases of Danis Weber type B ankle fracture received ORIF (open reduction with internal fixation) with antiglide plate. Their functional results were evaluated according to the ankle scoring system. We also observed the complications, including failure of fixation, infection, wound dehiscence, and need for hardware removal. Results The clinical results were satisfactory, with the excellent and good ratio of ankle score being 91.6%. Conclusion Since the antiglide plate has theoretical advantages over the conventional lateral plate, it is recommendable for stabilization of Danis Weber type B ankle fractures.

Objective To observe and analyze the MRI manifestations of Klippel-Trenaunay syndrome(KTS).Methods Thirty-one cases with diagnosed KTS underwent MRI on a 1.5 T MR system. MRI,MR venography(MRV),MR angiography(MRA)and X-ray venography(XRV)were performed.The pathological changes of the limbs and their veins were observed.Results MRI found soft tissue hemangiomas in 12 cases,soft tissue swelling of the extremities in 27 cases,superficial varicosities in 21 cases,and malformation of the veins in 27 cases.In twenty patients who underwent both MRV and XRV, superficial varicosities in 17 cases and persistent sciatic veins in 11 cases were found with both techniques. The increase of tributary veins was found in 10 cases with XRV,while found in 15 cases with MRV.The erratic venous course was found in 4 cases with MRV.The abnormalities of deep veins were found in 8 cases with MRV,while found in 7 cases with XRV.Conclusion MRI is an efficient and reliable imaging method for diagnosis of KTS.

The way of "extracting-salting-chromatography" was used to purify the phycoerythrin and phycocyanin from Porphyra yezoensis in process scale-up.First,by comprehensive comparison of efficiency,the Sephadex G-25 was selected from four resins (Sephadex G-25、G-100、S-300 and CL-6B) as the best choice used in crude extract desalting of phycobiliprotein.Then the preparation process of phycobiliprotein was scaled-up with raw material(Porphyra yezoensis) increased from 1g to 20g,and finally to 400g.The results indicated that the yields of purified phycoerythrin and phycocyanin (absorption spectra purity above 3.2) increased during according to process scale-up,with 0.323% phycoerythrin and 0.148% phycocyanin obtained from 400g frozen Porphyra yezoensis blades respectively.It is no doubt that the process involved in the experiment is a potential way for large scale preparation of phycobiliproteins of high purity.

Objective To explore the diagnostic merits of the average apparent diffusion coefficient(ADCav) for leukoencephalopathy in neonates and children.Methods One hundred and fifty-six neonates and children with central nervous system signs or symptoms were classified into 6 groups according to their ages(1 d-0.05).Contrast to the normal,the ADCav of leukoencephalopathy in neonates and children decreased.With increasing age,there showed a linear downtrend in each group.Conclusions The ADCav rises in neonates and children with leukoencephalopathy.The ADCav variation precedes changes in routine MRI.

Teeth are the hardest organs in the human body. They are not easily affected by external physical and chemical factors to degrade or deform. Dental age assessment has been widely used in forensic practice. Dental image is one of the most common methods in the age estimation. The emergence of cone beam computed tomography (CBCT) technology provides a new way to obtain three-dimensional image of teeth. It has many advantages such as low-dose radiation, short-time scanning, high-precision image, and finical convenience. Recent development of CBCT technology and its application on age estimation are reviewed in this paper.
Age Determination by Teeth/methods* ; Cone-Beam Computed Tomography/trends* ; Humans ; Imaging, Three-Dimensional