Objective To design an experiment for method-comparison and bias estimation of multi tests on multi instruments.Methods According to the procedure described by the NCCLS approved guideline EP9-A and improving the method of sample collection,we took 8 patient mixing samples each day to analyze all comparison tests on 11 auto-chemistry analyzer within following 5 days.The duplicates were assessed within the same run.The coefficient of correlation and average bias% were calculated,and the system errors at medical decided levels were assessed.Results Taking ALT as an example,the coefficients of correlation were between 0.994-1.000,and the average bias% were between-0.460%-4.927%,SE at 40U/L was-1.510-1.834 and SE at 300 U/L was-3.101-9.188.Conclusion In all tests that joined the comparison among the different instruments,28 tests were acceptable,2 tests were acceptable after modifying the coefficients,and AMY and LIP were not acceptable.

Objective To study the protective effect of compound nitroglycerin gel on rats with skin ulcer wound and its action mechanism. Methods Skin ulcer modle of 54 rats was established.Then the rats were randomly divided into three groups (n=18 each), including model control group, Jin wan hong group, and compound nitroglycerin gel group. Wound healing process and healing time were recorded.At the day 7 and 14 after the model was established, the number of fibroblasts and new blood capillaries of granulation tissue from center of the wound were measured,and RT-PCR was used to detect mRNA expression levels of VEGF, Ang1 andHIF-1α. Results As compared with model control group [(24.17±5.91) days], healing time of skin in the compound nitroglycerin gel group was significantly shorter [(14.67±3.76) days, P<0.01].The numbers of fibroblasts (61.20±7.56) and new blood capillaries (9.35±1.43) were increased, and mRNA expression levels of VEGF (1.692±0.196), HIF-1α (1.527±0.174) and Ang1 (1.548±0.203) were remarkably up-regulated on 7th day (P<0.05 or P<0.01).While on 14th day, the numbers of fibroblasts (28.00±5.96) and new blood capillaries (4.20±1.30) were decreased and the mRNA expression levels of VEGF (1.156±0.123), HIF-1α(1.021±0.105) and Ang1 (1.034±0.134) were significantly down-regulated (P<0.05 or P<0.01) . Conclusion Compound nitroglycerin gel can treat skin ulcer wound via regulating the numbers of fibroblasts, new blood capillaries and VEGF/Ang1/HIF-1α signal transduction pathway.

Objective To establish antibody titre quantitation method by ELISwithoustandard substance .MethodThe tesgroupof non-specifi,negative control ,specifiand total antibodiewere sefodetecting serantibodieby ELIS.Aftelineafitting of the time-absorbance datof early developing ,the fitted slopewere used athe velocity of absorbance changing , which were denoted by ν0 ,νC,νS,νT.Based on thathe ν-value and the concentration ? of determinand were linearelationship while the substrate waexcessive ,the function with parameteof ν-valueforeflecting the multiple proportionof antibodiecon-centrationbetween specifiand negative control groupcould be deduced .The assessmenof specifiIgG antibodiein serof KM mice immunized with fish collagen waused aan instance .ResultThe function C/C= (ν-ν0 )/(νC-ν0 ) could calculate the mul-tiple proportion(titre) of antibodieconcentrationbetween specifiand negative control group.Conclusion The above method of antibody titre quantitation isuitable fosemi-quantitative analysiwithoustandard substance .

AIM: To investigate whether the expression of integrin ?_3 and the activation of focal adhesion kinase(FAK) are involved in neointima formation after de-endothelium.METHODS: The model of intima hyperplasia was prepared by balloon injury.The levels of osteopontin(OPN),integrin ?_3 and FAK in vascular tissue were detected by Western blotting and immunohistochemistry.RESULTS: There were similar expression patterns in OPN,integrin ?_3 and FAK following balloon injury.The levels of three proteins were markedly increased 3 days after operation and reached the peak at 7th day.The increased FAK was mainly the phosphorylated form.The migration and proliferation of vascular smooth muscle cells was associated with the increase in the expression of integrin ?_3 and FAK,and was parallel with rapid turnover of extracellular matrix(ECM).CONCLUSION: The interaction of cells with ECM mediated by OPN and integrin ?_3 is essential for migration.The integrin ?_3-FAK pathway is involved in neointima formation.

OBJECTIVE:To determine the content of ?-schizandrin,one of the effective ingredients,in Shuangjia Wuling capsules METHODS:The RP-HPLC method was performed with YWG C18 column(4 6mm?250mm) The mobile phase consisted of methanol-water(72∶28) The detecting wavelength was 254nm RESULTS:The calibration curve for ?-schizandrin was linear in the range of 0 0 207～0 4 130mg/ml(r=0 9 999) The average recovery was 97 68% with RSD=1 85% CONCLUSION:The method is simple,rapid and reliable for quality control of the capsules

Objective To analyze the prevalence of the various hematological malignancies (HM) in Harbin.Methods Study data was collected from January 2010 to December 2011.All cases were diagnosed and classified on the basis of blood test,bone marrow puncture,histochemical staining and typing and classified by the French American British classification.The age and sex distribution of HM and its subtypes were analyzed.Results Of 2214 Chinese people diagnosed with HM,acute myeloid leukaemia (AML) (33.5 ％) and myelodysplastic syndromes (MDS) (29.9 ％) were the most prevalent and of 742 AML,the most frequent subtypes were M3.With the growth of age,the rates of chronic lymphocytic leukemia (CLL) and multiple myeloma (MM) were increased,but in acute lymphocytic leukemia (ALL),this trend was reversed.The distribution of HM increased with age between 0-60 years old,in above 60 years old,the frequency of some chronic HM including CLL,chronic myelomonocytic leukemia (CMML),chronic neutrophilic leukemia (CNL) and MM were continued to rise,but other HM subtypes were decrease,lower than in 41-60 years old groups.This study also revealed that M0 and MPAL were more common in 0-20 years as well as ALL.For patients never drinking alcohol and drinking for at least 10 years maybe associated with acute leukemia [OR =1.53 (95 ％ CI 1.05-2.23)],while smoking wasn' t a substantial risk factor for acute and chronic leukemia (P =0.20,0.48).Conclusions The epidemiology of HM in Harbin indicates that AML is the most prevalent,followed by MDS.Prevalence of CLL and MM increases with the age in patients above 60 years old.Drinking for at least 10 years maybe associated with acute leukemia.

Objective CXCR4-overexpressing bone marrow-derived mesenchymal stem cells (CXCR4-BMSC) were constructed and co-cultured with hypoxia/re-oxygenation pretreated renal tubular epithelial cells (HR-RTEC).Repair of HR-RTEC was detected and the possible mechanism was also discussed.Methods CXCR4-BMSC (CXCR4-BMSC/eGFP,eGFP as the tracer gene) and null-BMSC (BMSC/eGFP) were obtained by gene transfection technique,and the level of CXCR4 in the transfected cells was detected.RTEC was cultured under hypoxia/re-oxygenation condition for 12 h,respectively,to obtain HR-RTEC,which was used to simulate AKI in vitro.BMSC and HR-RTEC were co-cultured for 12 h,and the proportion of apoptotic cells among the HR-RTEC was assayed by immunofluorescence technique.Western blot was used to test the protein levels of cleaved Caspase-3 and Bcl-2.The number of migrating BMSC was also assayed.After culturing with the HR-RTEC culture supernatant,the expression of cytokeratin 18 (CK18) in BMSC was tested by immunofluorescence staining.Cytokines including bone morphogenetic protein-7 (BMP-7),hepatic growth factor (HGF) and interleukin-10 (IL-10) in the BMSC culture supernatant were detected by ELISA method.Results Expression of CXCR4 was enhanced in CXCR4-BMSC.Proportions of the apoptotic cells among HR-RTEC after being co-cultured with BMSC,CXCR4-BMSC and null-BMSC were all decreased,especially in the C/H group.The decreased cleaved Caspase-3 and enhanced Bcl-2 were also observed in HR-RTEC.The number of migrating CXCR4-BMSC was the highest.Proportions of CK18+ cells in BMSC,CXCR4-BMSC and null-BMSC were all low and showed no difference.However,CXCR4 overexpression in BMSC stimulated secretions of BMP-7,HGF and IL-10.Conclusions CXCR4-overexpressing BMSC has more repair effect on the co-cultured HR-RTEC,the enhanced migration ability and secretion ability of CXCR4-BMSC are the possible mechanisms.

Objective To investigate the feasibility and effect of recanalization of inferior vena cava with percutaneous transluminal angioplasty(PTA)by Inoue-balloon. Methods Eighty-nine patients with Budd-chiari syndrome(BCS)were treated with PTA by Inoue-balloon. Results After PTA, the median(interquartile range)diameter of hepatic segment inferior vena cava increased from 0.00(0.20 ～ 0.00) cm to 1.90(2.00 ～ 1.47)cm; (P

【Objective】To observe the dynamic interference of cellular endotoxin specific receptors of Toll-like receptor 4(TLR4) mRNA and nuclear factor ?B p65(NF-?B p65) in rats with damp-heat syndrome of seasonal febrile disease by Ganlu Xiaodu Dan(GXD),and to explore the therapeutic mechanism of prescriptions with the actions of clearing heat and resolving dampness.【Methods】Wistar rats were randomized into 3 groups: A(normal control),B(models established by feeding of high-fat diet and colon bacillus under the high-temperature and high-humidity condition),and C(rat models treated with GXD).Reverse transcription-polymerase chain reaction(RT-PCR) analysis was used to detect the TLR4 mRNA level in hepatic macrophages and immunohistochemical method was used to detect the activation of NF-?B p65.【Results】The expression of TLR4 mRNA and NF-?B p65 was increased gradually in group B 6,12 and 24 hours after infection with colon bacillus,and the differences were significant,indicating that the expression of TLR4 mRNA and NF-?B p65 increased with the prolongation of disease course.In group C,TLR4 mRNA expression was decreased in different time points after infection,the difference of TLR4 mRNA expression 12 and 24 hours after infection was significant as compared with group B and group A(P