As the investments from the state and society in universities increased rapidly, the scientific and technological resources gained huge promotion. However, the efficiency of some instruments remained low, and the repeated purchases of some instruments occurred frequently. Here the authors discussed about building a practical, reasonable and efficient system for lab management.

Objective To study the chemotactic activity of T lymphocytes from patients with psoriasis to proinflammatory cytokines in vitro and its role in the pathogenesis in psoriasis. Methods A 48 microchemotaxis chamber was employed to determine T cell chemotactic activity. In addition, the expression of T cell activation markers such as HLA DR and interleukin 2 receptor was analysed with fluorescence activated cell sorting technique and serum IL 8 level was measured with ELISA. 45 patients with psoriasis (23 patients with severe psoriasis and 22 patients with mild psoriasis) and 21 patients with atopic dermatitis were investigated, and 20 healthy controls were tested equally. Results ①T cell chemotactic responses were significantly decreased in patients with severe psoriasis and atopic dermatitis as compared to healthy controls. ②Increased expression of activation markers such as HLA DR and interleukin 2 receptor was demonstrated in circulating T cells from severe psoriatic patients and atopic dermatitis patients in comparison to healthy controls. ③Serum IL 8 level was significantly increased in patients with psoriasis and atopic dermatitis. Conclusion The in vitro chemotactic response of circulating T cells in patients with severe psoriasis to IL 8 is significantly impaired, furthermore, the in vivo activation state of T lymphocytes in these patients and increased level of serum IL 8 seem to be associated to the decreased in vitro T cell chemotactic response.

Objective To study the relationship between the in situ expression of infiltrating T lymphocyte subsets and leukocyte adhesion molecules in psoriatic patients. Methods Immunohistochemical technique was employed to study the expression of infiltrating T lymphocyte subsets (CD3, CD4, CD8) and leukocyte adhesion molecules (ICAM 1, ELAM 1, VCAM 1) in the lesional and non lesional psoriatic skin. Results There was a significant increase of T lymphocyte subsets (CD3, CD4 and CD8) and adhesion molecules (ICAM 1, ELAM 1, VCAM 1) in the lesional skin than those in non lesional skin in psoriasis, and that there is a significant positive correlation between the density of infiltrating T lymphocyte subsets and the intensity of in situ expression of adhesion molecules. In comparison to the materials from normal controls, the upregulation expression of adhesion molecules was observed in non lesional skin and normal appearance skin after short duration topical treatment with corticosteroid. Conclusion Increased upregulation expression of adhesion molecules is closely associated with the infiltration of T lymphocytes in lesional skin of psoriasis and may be one of the factors for the recurrence of psoriasis.

Objective To address the question whether circulating T cells from the patients with primary and metastatic malignant melanoma show altered chemotaxis to monocyte chemotactic protein 1 (MCP 1) and its relation to tumor infiltrating lymphocyte (TIL) and metastasis. Methods Chemotactic responsiveness of T cells towards MCP 1 and immuno histochemistry study were investigated in patients with primary and metastatic melanoma compared to patients with basal cell carcinoma and healthy persons. Results T cells from primary and metastatic melanoma patients showed a significantly decreased chemotactic migration towards MCP 1 and that T cells from patients with basal cell carcinoma showed normal chemotactic response. Immuno histochemistry study showed that there was no correlation between the density of TIL and the decreased chemotaxis of circulating T cells to MCP 1 in patients with primary melanoma. Conclusion Circulating T cells from patients with primary and metastatic malignant melanoma show a MCP 1 specific decrease in chemotactic migration, this may be due to abnormal expression or modulation of MCP 1 receptor on these cells.

Objective To study the hemostnsis effects of compression cords oppressing after femoral artery puncture and encheiresis. Methods Self-made compression cords were used to stop bleeding of femoral artery puncture sites in 2164 patients underwent 3046 cases of arteriopuncture encheiresis. The total eases were divided into group A (1482 eases) and group B (1564 cases) according to different treatment of oppression and breaking duration which were 8-10 hours for group A and 5-6 hours for group B, the hemostasis effects, discomfortableness and related complications within two groups were evaluated. Results The proportion of patients who got good hemostasis effects were 99.2% in group A, 99.0% in group B. There was no difference in hemostasis effects between two groups (P> 0.05). While the rate of discomfortableness in group A (63.8%) was higher than that in group B(42.9%) (P<0.05). The related serious complications were 2 patients in group A, but no occurred in group B. Conclusion Self-made compression cords op- pressing and 5-6 hours breaking time course can achieve both finer hemostasis effect and lower frequency of complications after femoral artery puncture and encheiresis.

Objective: To observe the effect of oxymatrine (OM) on the expression of HBV DNA in HepG2.2.15 cells and to investigate the anti-HBV mechanism of OM. Methods: The level of HBV DNA in HepG2.2.15 cells incubated with different concentrations of OM was quantified by equivalent competitive PCR combining with DNA hybridization quantitative detection technique (PCR-ELISA). The in vitro anti-viral effect of OM was evaluated by calculating the inhibiting rate. Results: OM inhibited the expression of HBV in HepG2.2.15 cells. The inhibiting rate increased with the drug concentration. The stable concentration of OM in medium was important in keeping the inhibiting rate. Conclusion: OM can inhibit the synthesis of HBV directly at the level of HBV DNA replication.

Objective To investigate the correlation between expression of four adhesion molecules in sera and in skin lesions of patients with psoriasis vulgaris, as well as their relevance to clinical severity of the disease. Methods Enzyme-linked immunosorbent assay (ELISA) was used to determine the serum levels of ICAM-1, ICAM-3, VCAM-1 and ELAM-1 in 36 patients with plaque type psoriasis vulgaris and 36 healthy controls. Avidin biotin immunoperoxidase staining system was employed to quantitate expression of the four adhesion molecules in psoriatic skin lesions before and after treatment. Results Significantly increased expression of four adhesion molecules was found in psoriatic skin lesions (P

Objective To explore the expression of early growth response gene-1 (EGR-1) in T cells that were positive for Tax protein of human T-cell leukemia virus type 1 (HTLV-1) and its possible reg-ulatory mechanism .Methods A series of expression structures carrying the regulatory elements of EGR-1 in different length and luciferase reporter genes were constructed .TaxP cells were transfected with the con-structs containing reporter genes and cultured with 5μmol/L of NF-κB inhibitor BAY 11-7082 or equal vol-ume of DMSO.After cultured for 24 hours the cells were collected to test the luciferase activity .BAY 11-7082 or equal volume of DMSO was added into the supernatant of TaxP cell culture to test the expression of EGR-1 protein by Western blot after 24 hours of culture .Tax and its mutants M22 and M47 were transfected into 293 T cells respectively to test the expression of EGR-1 protein by Western blot after 24 hours of culture . Results The expression structures carrying the regulatory elements of EGR-1 in different length and their mutants followed by luciferase reporter genes were successfully constructed .The luciferase activity in the cells transfected with the constructs containing the elements E 1 and E2 were higher than that transfected with E3, DelE and MutE, but the reporter gene expressions were decreased with the interference of BAY 11-7082 (P<0.01).However, there were no significant changes with the luciferase activity in the cells transfected by elements E3, DelE and MutE.Western blot analysis indicated that the expression of EGR-1 protein was significantly decreased with the interference of BAY 10-7082 .The expression of EGR-1 protein in M22 mu-tants-transfected 293 T cells were decreased significantly in comparison with those by wild type tax-and M47-transfected cells .Conclusion NF-κB was the key nuclear factor in regulating the expression of EGR-1 pro-tein in Tax-positive T cells .

OBJECTIVE:To establish a method for the simultaneous determination of(R,S)-goitrin,chlorogenic acid,luteolo-side and isochlorogenic acid A in Xiaoer ganmao granule. METHODS:HPLC was performed on the column of Hedera C18 with mo-bile phase of acetonitrile-0.1% formic acid aqueous at a flow rate of 1.0 ml/min,the detection wavelength was 254 nm,330 nm and 370 nm,column temperature was 40 ℃,and the injection volume was 5 μl,RESULTS:The linear range was 6.6-105 μg/ml for (R,S)-goitrin (r=0.999 9),9-140 μg/ml for chlorogenic acid (r=0.999 9),9-144 μg/ml for luteoloside (r=0.999 8) and 9-138 μg/ml for isochlorogenic acid A(r=0.999 6);the limits of quantitation were 330 ng,450 ng,450 ng and 450 ng,limits of detection were 66 ng,90 ng,90 ng and 90 ng,respectively;RSDs of precision,stability and reproducibility tests were lower than 3%;recoveries were 95.01%-98.77%(RSD=1.48%,n=6),95.14%-98.91%(RSD=1.52%,n=6),95.11%-97.54%(RSD=0.93%,n=6) and 95.58%-99.63%(RSD=1.73%,n=6). CONCLUSIONS:The method is simple and accurate,and suitable for the simultaneous determination of(R,S)-goitrin,chlorogenic acid,luteoloside and isochlorogenic acid A in Xiaoer ganmao granule.

Objective To reveal the influential factors on scalp electroencephalogram (EEG)recording and provide valuable information for localization of the epileptic focus by analyzing the characteristics of spikes with continuous focal periodic discharges on scalp and cortical EEG. Methods Five patients with refractory epilepsy who had low amplitude spikes with continuous focal periodic discharges on interictal scalp EEG were studied. Intracranial EEG recording was also performed in patients. The amplitudes of spikes and cortical areas of spike-wave foci were measured by DaVinci system. Patterns of continuous periodic activity were determined by autocorrelograms,power spectral density and coherence analysis using Matlab and Spike2 software.T-test was employed to compare the mean amplitudes of spikes on the scalp and cortical EEG.Results The amplitudes of spikes recorded on scalp EEG of the 5 patients were:(22.2±4.8),(30.4±7.1),(20.7±3.2),(58.4±10.1),(23.4±3.9) μV.The amplitudes of spikes recorded on cortical EEG of the 5 patients were:(1253.8 ± 199.3),(806.5 ± 161.4),( 1585.7 ±305.7),(922.5 ± 140.6),(736.8 ±70.9) μV.The amplitudes of spikes on scalp EEG were significantly higher than those on cortical EEG ( t =6.394,P ＜ 0.05 ).The cortical areas of spike-wave foci of the 5 patients were:4.0,6.0,3.5,5.5,6.5 cm2.Power spectral density and autocorrelugrams showed 1-3 Hz oscillations on the cortical of spike-wave foci. Cross-correlation and coherence analysis showed synchronization of electrical activity in two contacts of intracranial electrodes. Conclusion The low amplitude spikes with continuous focal periodic discharges on interictal scalp EEG provide valuable information for localization of the epileptic focus.