[Objective]To compare clinical results of the mini midvastus approach with the traditional medial parapatellar approach for totall knee arthroplasty and to evaluate their advantages.[Methods]Sixty total knee arthroplasty(56 patients)have been freated during May 2002 to May 2006,28 patients(30 knee) were underwent TKA using either mini midvastus approach or traditional medial parapatellar approach.Two groups were compared according to skin incision length,postoperative pain score,total amount of drains,postoperative amount of decreasing Hb,active straight-leg raise time,postoperative length of stay,radiographic alignment of all the components,postoperative range of motion at 6 weeks and 12 weeks and 1 year,postoperative HSS score at 1 year.[Results]All the patients were followed from 1 to 1.5 year(mean,13.2 months).Position of all the components was normal in all patients except one case with abnormal position of tibial prosthesis in both groups.In the MIS group,the average skin incision length was 11.3 cm,average visual analog pain scale was 2.76 score,while the control group was 20.6 cm and 3.8 score.In the MIS group,the total amount of drains was 96.8 ml,postoperative amount of decreasing Hb was 22.5 g,while the control group was 276.3 ml and 32.5 g.In the MIS group,active straight-leg raise time was 3.8 days,postoperative length of stay was 8.6 days,while the control group was 5.8 days and 12.1 days.In the MIS group,the mean ROM at 6 weeks postoperatively was 107?and 117?at 12 weeks,while the control group was 98?and 108?.The differences between each factor group and operative results were significant(P0.05).[Conclusion]The mini midvastus approach wis associated with a more rapid functional recovery and a more satisfactory short-term result.

AIM: To compare the ginsenoside Rb 1 content in different granularity of Radix Panacis Quinquefolii in order to confine Chinese medicine by ultramicro powder technique. METHODS: HPLC was used to determine ginsenoside Rb 1 in micropowder of Radix Panacis Quinquefolii.RESULTS:The contents of ginsenoside Rb 1 in micropowder of Radix Panacis Quinquefolii pulverized in normal and low temperature were increasing with particle size reduction, and the content in low temperature pulverization was distinctly higher than that in normal temperature pulverization. CONCLUSIONS: Low temperature pulverization of Radix panacis Quinquefolii is superior to processing at temperature.

Purpose To analyze the hemodynamic characteristics of brain stem in patients with basilar artery hypoplasia (BAH) by magnetic resonance perfusion-weighted imaging (PWI).Materials and Methods According to the inclusion and exclusion criteria,51 patients with BAH were selected as the BAH group,and 79 patients without BAH were selected as the non BAH group.All patients were examined by MRI,3D-TOF and PWI,and magnetic resonance angiography was acquired after the three examinations.The regional cerebral blood flow (rCBF),regional cerebral blood volume (rCBV),regional mean transit time (rMTT) and time to peak (TTP) values of pontine area were measured.Results The rCBF value of the BAH group [(17.10±6.52) ml/(100 g · min)] was significantly lower than that of the non BAH group [(29.06± 13.32) ml/(100 g · min)] (P＜0.05);the rCBV value of the BAH group [(1.41 ±0.26) ml] was significantly lower than that of the non BAH group [(2.62± 0.82) ml] (P＜0.05);the TTP value of the BAH group [(6.14± 1.31) s] was significantly higher than that of the non BAH group [(5.39 ± 1.08) s] (P＜0.05);the rMTT value of the BAH group [(20.78±3.48) s] was significantly higher than that of the non BAH group [(19.01 ±2.39) s] (P＜0.05).TTP was the most sensitive index of cerebral perfusion injury,and the incidence of TTP extension was 41.18％ in the BAH group.Conclusion PWI can detect the abnormal cerebral hemodynamics in patients with BAH,which provides the basis for the timely treatment and prevention of irreversible injury in the ischemic area of the brain.

Object Four regenerated somatic cell hybrids between carrot and Bupleurum scorzonerifolium Willd. proved by chromosome analysis were analyzed at the molecular level. Methods RAPD analysis and 5S rDNA spacer sequence were adopted. Results In the electrophoresis pattern of the PCR products the four somatic cell hybrids had the characteristic bands of two parents and new bands. Conclusion Their hybrid nature was clarified at molecular level. This provides a firm foundation to further analyze the main active components, saikosaponin of somatic cell hybrids, and screen out efficacious hybrid cell lines.

Objective To set up a new method for fast determining and identifying Xintong Oral Liquid by acousto-optic tunable filter-near infrared(AOTF-NIR)spectroscopy.Methods Identifying method by NIR spectroscopy combined with principal component analysis(PCA),and determining model of qualitative and quantitative analyses based on PLS1 algorithm.Results The XT-C identifying model could be used to identify Xintong Oral Liquid,the determining model of qualitative and quantitative analyses with better accuracy,RMSEP of the models for puerarin was 0.137 1,the determination coefficients was R2=0.984 5.The correlation coefficient of the true value and predication value from validation was r2=0.996 4.The average recovery of the predication set was 101.9%.RSD for precision was 1.98%,RSD for stability was 1.57%.Conclusion The method is a quick and simple assay technique with low cost,which is able to be used in the qualitative and quantitive analyses on Xintong Oral Liquid.

AIM:A new method to rapidly non-destructive quality control Compound Danshen Tablet was developed by portable acousto-optic tunable filter (AOTF)-near infrared (NIR) spectroscopy. METHODS:A portable AOTF-NIR spectrometer was used to test 215 different batches of Compound Danshen Tablet collected from fifty-six pharmaceutical factories. The samples were analyzed by the Unscrambler program using principal component analysis(PCA). Quantitative analytical models invoking the partial least squares (PLS) algorithm simultaneously predicted the contents of four major constituents in Compound Danshen Tablet:salvianolic acid B,tanshinoneⅡA,water extract and alcohol extract. RESULTS:The qualitative analysis models accurately identified the differences between Compound Danshen Tablet and other reference substances. The results of external validation showed by the significant t-test that no significant difference between predictive and the chemical value,RSD was equal to 0. 990 9,0. 991 3,0. 964 0 and 1. 73% ,2. 08% ,3. 32% ,1. 32% ,respectively. CONCLUSION:The method of rapid non-destructive analyzing Compound Danshen Tablet is explored.

AIM: To test the contents of tanshinone Ⅱ_A and salvianolic acid B in 56 batches of samples by HPLC,evaluate the current quality of Compound Danshen Tables. METHODS: HPLC,chromatographic conditions: The detection column was Agela-C_(18)(5 ?m,46 mm?250 mm) for tanshinone Ⅱ_A,mobile phase was methanol-water(73(∶)27),UV detection wavelength was set at 270 nm.The flow rate was 1 mL/min.The detection column of Agela-C_(18)(5 ?m,4.6 mm?250mm) was used for salvianolic acid with mobile phase of acetonitrile-methanol-formic acid-water(10(∶)30(∶)1(∶)59). UV wavelength was set at 286 nm.The flow rate was 1 mL/min.(RESULTS:) The most of samples conform to the requirement of Chinese Pharmacopoeia(2005),but the content of tanshinone Ⅱ_A was widely different and three batches of salvianolic acid B were lower than the requirement of Chinese Pharmacopoeia(2005). CONCLUSION: The quality of Compound Danshen Tables will be improved.

Enterovirus 71 (EV71) is a common cause of Hand, foot, and mouth disease (HFMD) and may also cause severe neurological diseases, such as encephalitis and poliomyelitis-like paralysis. To examine the genetic diversity of EV71, we determined and analyzed the complete VP1 sequences (891 nucleotides) from nine EV71 strains isolated in Fuyang, China. We found that nine EV71 strains isolated were over 98% homologous at the nucleotide level and 93%-100% homologous to members of the C4 subgenogroup. At the amino acid level, these Fuyang strains were 99% -100% homologous to one another, 97%-100% homologous to members of the C4 subgenogroup, and the histidine(H) at amino acid position 22 was conserved among the Fuyang strains. The results indicate that Fuyang isolates belong to genotype C4, and an H at position 22 appears to be a marker for the Fuyang strains.

Objective To explore the feasibility and efficacy of the selective portal vein embolization (SPVE) before radiofrequency ablation(RFA) for liver tumor large than 3 cm.Methods 63 patients with 63 liver tumor (＞3 cm) located in single liver segment completely or mostly underwent RFA.21 patients (21 lesions) were randomly assigned to receive SPVE before ablation (SPVE + RFA group),other 42 patients were treated with RFA only (RFA group).The complications and treat results of two groups were collected and compared.Results SPVE were achieved in 20 of 21 patients,and no critical complication were happened in both group.During a observation period of median 14.2 months,local tumor progression were observed in 17 of 42 patients (40.5％) in RFA group and in 3 of 20 patients (15.0％) in SPVE+ RFA group,there were significant difference between two groups(P =0.043).Conclusions SPVE can safely and effectively improve the efficacy of RFA for the liver tumors which large than 3 cm and located in single liver segment.

Objective To investigate changes in expressions of activation antigens CD69 and HLA-DR in CD3+T lymphocytes in peripheral blood and skin lesions in patients with psoriasis vulgaris. Methods Peripheral blood samples were obtained from 20 patients with psoriasis vulgaris and 20 healthy controls, and skin specimens from the lesions of 15 out of the 20 patients and 10 healthy controls. Flow cytometry was performed to quantify the expressions of CD69 and HLA-DR in peripheral blood CD3+T cells, and an immunohistochemical study to measure the expression of HLA-DR in skin specimens. Statistical analysis was carried out by a two-sample t-test and Pearson correlation analysis with the SPSS 19.0 software. Results Compared with the healthy controls, the patients with psoriasis vulgaris showed increased expression rates of CD69 (4.70%± 1.90%vs. 1.56%± 0.95%, t=6.629, P<0.01)and HLA-DR (8.97%± 1.79% vs. 3.02% ± 1.15%, t= 6.204, P< 0.01)in peripheral blood. Pearson correlation analysis revealed that the percentage of CD3+HLA-DR+cells in peripheral blood was positively correlated with the psoriasis area and severity index (PASI)score (r=0.5626, P<0.05). The expression rate of HLA-DR was significantly higher in the dermis (64.87%± 17.31%vs. 19.80%± 5.69%, t=7.916, P<0.01), but lower in the epidermis(11.80%± 5.55%vs. 27.40%± 8.61%, t=5.479, P<0.01)in the psoriatic specimens compared with the control specimens. Immunohistochemically, HLA-DR was widely expressed in the dermis of psoriatic lesions, but mainly distributed around blood vessels in the control skin. Conclusions There is an aberrant activation of CD3+T cells in peripheral blood and inflammatory cells in skin lesions in patients with psoriasis vulgaris, and the percentage of CD3 +HLA-DR+ cells in peripheral blood is correlated with the severity of psoriasis vulagaris.