Objective To investigate the prognosis and its related factors of acute promyelocytic leukemia(APL).Methods Fifty-four patients with APL,from January 1994 to February 2005 in our hospital,were studied retrospectively.Univariate analysis of the potential factors influencing survival of these patients was carried out by comparison of the cases in same stage with chi square test and Log-Rank method.Prognostic indicators were demonstrated by CR rate,overall survival(OS)and event-free survival(EFS).Results 45 patients(83.3%)entered CR.The results showed that 1-year and 3-year OS of 54 patients were 81.5% and 73.3% respectively,1-year and 3-year EFS were 78.4% and 66.6% respectively.The estimated 5-year OS and EFS were 60.5?2.4% and 52.4?1.5% respectively.The analysis of prognostic factors showed that:Sex,age,initial WBC count,initial PLT count,marrow cellular morphology features,first induction regimen and time from induction therapy to CR were all important prognostic factors of APL.Conclusion Factors,including age

Objective To compare the antineoplastic immunological effects of nanoemulsion-encapsulated MAGE1-HSP70 and SEA(the ratio of MAGE1-HSP70 fusion protein to SEA superantigen was 100∶1)as NE(MHS)vaccine as given in different routes,and try to look for a novel and effective immune route.Methods NE(MHS)was prepared using magnetic ultrasound methods,and the size,the encapsulation rate and the stability of the nanoemulsion vaccine were evaluated.C57BL/6 mice were immunized via p.o.,subcut.,i.v.,or i.p.route.The cellular immunocompetence was detected by ELISpot assay and LDH release assay.The therapeutic and tumor challenge assay were examined too.Results When the vaccine was given orally,the tumor masses formed 28 days after B16-MAGE1 inoculation in mice were markedly bigger than that formed in the mice of the other groups(P

In this experiment, primary mixed culture cells of lung and liver derived from new born mouse was made use of target cells, 0.1 ?Ci 3~H-TdR per milliliter medium was added in the culture in order to induce malignant transformation of the cells in the culture. Results of the experiment was that the cells effected by 3~H-TdR had a unlimited growing and formed sarcoma after being inoculated into new born mice immunosuppressed with ATS. It suggested that they had became malignant transformation cells. Results of analysis of chromosome aberrations of the transformed cells, the long arm chromosome was observed in 5% of cells, the metacentric chromosome in 7% of cells, the acentric fregment in 8% of cells. It shows that DNA damage of the cells induced by 3~H-TdR causes their chromosome aberrations and, futhermore, development of malignant cells. The fact that unstable aberrations was Still in sight in the malignant transformation cells suggested that there have been a bit of 3~HTdR left in these cells which kept damaging DNA of the cells.

OBJECTIVE:A RP-HPLC method was established to determine the concentration of ambroxol hydrochloride in human plasma.METHODS:Waters HPLC instrument was used with the Hypersil BDS C 18 column(5?m,250mm?4.6mm). Ditiazem hydrochloride was chosen as the internal standard.The mobile phase was composed of acetonitrile-methyl alcohol-0.01mol/L phosphatic buffer(pH7.0)-tetrahydrofuran(35∶35∶27.5∶2.5).Flow rate was1.0ml/min.Detection wavelength was242nm.A single oral dose of90mg imported ambroxol hydrochloride tablet was given to9healthy male volunteers.Ambro xol concentration in plasma was assayed.RESULTS:The standard curve of ambroxol hydrochloride was linear in the range of10～640ng/ml.The minium detection concentration was10ng/ml.The extraction recovery was more than90%.A one-compartment open pharmacokinetic model was adopted in ambroxol plasma concentration-time data analysis.The main pharmac okinetic parameters were as follows:C max =(226.53?34.59)ng/ml,T max =(1.82?0.80)h,T 1/2ke =(6.27?0.66)h,AUC 0～24 =(2363.55?448.86)ng/(h?ml).CONCLUSION:The method is simple.The sensitivity and accuracy are high.It is applicable to study the pharmacokinetics of ambroxol hydrochloride in healthy male volunteers.

BACKGROUND:Previous studies have suggested that achaete-scute homology 1 (ASCL1) plays a key role in the neuronal commitment. Therefore, somatic cels may directly differentiate into neurons by gene transfection ofASCL1, which wil provide new therapeutic strategies for optic nerve regeneration. OBJECTIVE:To construct a recombinant adenovirus vector expressing ratASCL1 gene for further research ofASCL1 gene function. METHODS:The ratASCL1 gene and advenovirus shuttle plasmid (pYr-adshuttle-4) which contained enhanced green fluorescent protein (EGFP) reporter gene were cleaved by restriction endonucleaseXhoI andEcoR I. The target gene fragments were connected together to generate a recombinant plasmid pYr-ads-4-rat-ASCL1 and then transfected into E.coliDH5α. The plasmid was confirmed to be constructed as expectation by enzyme digestion and sequence reaction. The plasmid pYr-ads-4-rat-ASCL1 and pAd/PL-DEST were reconstructed by homologous recombination processes to obtain rat ASCL1 recombinant adenovirus vector. The plasmid pYrAd-rASCL1 was linearized byPac I and subsequently transfected into HEK293 cels for packaging and amplification. RatASCL1 gene in the recombinant adenoviruses were identified by PCR. Virus titer was determined by tissue culture infectious dose 50. Infection efficiency was monitored by EGFP expression. RESULTS AND CONCLUSION:Restriction endonuclease digestion and DNA sequencing showed that the recombinant adenovirus vector pAd-rat-ASCL1 was constructed correctly. The positive amplification bands of 862 bp could be seen in PCR analysis. The virus titer reached 2×1010 pfu/mL. Infection efficiency of recombinant adenovirus in HEK293 cels was more than 80%. The results indicate that the recombinant the adenovirus vector containingASCL1 with high titer and infection efficiency has been successfuly constructed, which can be helpful for further research of the function and clinical application ofASCL1 gene for optic nerve regeneration.

Objective To establish a method for the determination of eugenol in Xiao’er Fuxie Waifu Gel.Methods RP-HPLC method was developed with Lichrospher-C18 analysis column,using methyl alcohol-water(65:35) as mobile phase.The detection wavelength was 280 nm and flow rate was 1.0 mL/min.Results The linear range of eugenol was from 0.108 to 1.724 ?g(r= 0.999 9).The average recovery was 99.1 %and RSD was 1.4 %.Conclusion The method is convenient and accurate.It can be used for the quality control of Xiao’er Fuxie Waifu Gel.

Abstract: - Well characteristic biomarkers are helpful for understanding the disease condition of patients with occupational pneumoconiosisand predictthediseaseevolution.Currently,related biomarkersarewidelystudied and theyinclude:epithelial cell injury related biomarkers such as salivary glycochain antigen, Clara cell protein and surfactant protein; inflammatory - - response related biomarkers such as interleukin, tumor necrosis factor α, chemokine, high mobility group protein 1 and - - L selectin; oxidative stress related biomarkers such as superoxide dismutase, glutathione, malondialdehyde, heme oxygenase 1 and lactate dehydrogenase; pulmonary fibrosis related biomarkers such as matrix metalloproteinases and transforming growth - - - - - factor β; non coding RNA such as miR 19a, miR 29 and miR 146a, et al. These biomarkers are helpful to understand the pathogenesisofoccupationalpneumoconiosisandguidethediagnosis,treatmentandprognosis.However,moreresearchneedsto-bedoneontherepeatabilitytestofbiomarkers,combinedapplicationandtheminingofnoncodingRNAastargetsfordisease diagnosisandtreatment.

Objective Developing an internal quality control substance of Ureaplasma urealyticum(UU)‐DNA for real‐time PCR to establish an internal quality control system and preliminary evaluation its clinical value .Methods Internal quality control sub‐stance was prepared by mixing samples which Ct value were 24-25(positive sample) and 32 -33(weak positive sample) ,respec‐tively .At the same time ,selecting samples that test results were negative as negative control .The target value ,standard deviation (s) and coefficient of variation(CV) of internal quality control substance were defined by“instant method”for the first 20 runs and Levey‐Jennings quality control(QC) chart after the first 20 runs .Using the“Westdard” multi‐rule quality control methods to ana‐lyze the detection results .Exporting OPSPecs chart by quality control rules in Unity Real Time (URT ) system and setting up new quality control rules according with OPSPecs chart .Results 131 times of the detection of quality control substance were performed totally .The first 20 runs were defined by“instant method”and later 111 runs were defined by Levey‐Jennings QC chart ,the results were stable of quality control substance and reasonable quality control rules .Conclusion Preparing of internal quality control sub‐stance of UU‐DNA used in real‐time PCR might be easy and stable .So ,the internal quality control substance of UU‐DNA could be worthy for practical application in this PCR laboratory .Design internal quality control rules based OPSPecs chart in molecular de‐tection is very simple and practical .

The Kato-Katz (KK) method is a well-known method of fecal examination for helminthiases. Its diagnostic sensitivity was found very high for clonorchiasis. The present study evaluated the correlation of Clonorchis sinensis egg counts by the KK method with those by direct smear and formalin-ether (FE) technique. The egg counts obtained by the KK method (Y) were correlated with the counts by direct smear (X) with the equation of Y = 659.4 + 0.266X (r2= 0.738), but not with those by the FE method. The present study demonstrated that the KK method and direct smear were useful for both qualitative and quantitative diagnosis of clonorchiasis, especially in the field.
Animals ; Cellophane ; Clonorchiasis/*diagnosis/parasitology ; Clonorchis sinensis/*isolation & purification ; Comparative Study ; Ether, Ethyl ; Feces/parasitology ; Formaldehyde ; Humans ; Parasite Egg Count/*methods ; Sensitivity and Specificity

Objective:To isolate and culture the pulp cells from human young permanent teeth (pDPC),and to observe their biological characteristics and the expression of some specific markers,and to induce these pulp cells to differentiate into osteoblast, adipocyte, neuron and chondrocyte lineages. Methods:Pulp cells were isolated and cultured from orthodontic extracted premolars of children. The attached cells after at least 3 passages were used for the following experiments:1. Morphology and ultrastructure analysis; 2. Cell cycle and phenotype were analyzed by flowcytometry; 3. Growth curve were recorded;4. pDPC were induced to differentiate into osteoblast,adipocyte,neuron in vitro,and were identified by histochemical methods and RT-PCR. Results: 1. Attached pDPCs were fibrablast-like cells,which were distinguished from BMSC. 2. The cell organs in dDPCs were well developed. 3. pDPCs were highly positive for CD90, CD44, CD147,which are mesenchymal stem-cell markers,but were negative for other markers including CD34, CD38, CD45, HLA-DR. 4. pDPCs showed high growth rate. 5. pDPCs could be induced to differentiate into osteoblast, adipocyte, and neuron lineages,but not chondrocyte lineages. Conclusion:pDPCs were characterized by their ability to proliferate with high growth rate in vitro. The expression of some BMSC markers in these cells were observed. They showed the potential to differentiate into multiple mesenchymal lineages such as osteoblst,adipocyte, neuron lineages under specific conditions in vitro.