Objective To investigate the G2 cell cycle arrest and apoptosis induced by HIV-1 Vpr gene on Hela,Lovo and HepG2 cancer cells.Methods Recombinant vector pcDNA4-Vpr was constructed by DNA recombination technology and was then transfected into Hela,Lovo and HepG2 cells.Meanwhile,pcDNA4-EGFP plasmid group,FUGENE group and blank group were also set up as control.Ratio of cytostasis was evaluated by MTS assay 24 h,48 h and 72 h later,cell cycle arrest examined by flow cytometry and apoptosis detected by staining with ANNEXIN V and PI double dyes.Results Compared to the control group,the value of inhibition ratio,G2 arrest and apoptosis of Hela,Lovo and HepG2 cells increased obviously 24 h,48 h and 72 h after the transfection ( P ＜ 0.05 ).72 h after the transfection,the inhibition ratio of Hela,Lovo and HepG2 was 29.67％,27.35％ and 31.67％ respectively.Percentage of G2 phase cells was 24.9％,18.8％and 32.1％ respectively.Apoptosis percentage of Hela,Lovo and HepG2 ceils was 15.46％,7.7％ and 41.5％ correspondingly.Conclusion HIV-1 Vpr gene can induce cell cycle G2 arrest and apoptosis of Hela,Lovo and HepG2 cell lines in vitro.

Angiosteosis is associated with increased vascular stiffness and leads to clinical manifestations such as high blood pressure and heart failure,which increases the risk of cardiovascular morbidity and mortality.Angiosteosis is considered to be ectopic deposits of calcium phosphate crystallization in the form of hydroxyapatite in cardiovascular tissue.However,the mechanism of angiosteosis is not yet clear.The pathophysiologic process of angiosteosis is similar to normal bone mineralization.Matrix vesicles (MV) play an important role in bone mineralization.Researches confirmed the existence of MV in the calcified arteries under the microscope.Angiosteosis is widely found in clinical diseases,so the studies of the mechanism of angiosteosis and the role of MV in angiosteosis are of great significance.

The respective sense and antisense oligodeoxynucleotides and their phosphorothiods, targeting at the bcr/abl, were the hallmark gene of Chronic Myelogenous Leukemia( CML) and c-myb correlates with CML. K562 cells, derived initially from a patient of CML blast crisis, were incubated with bcr/abl antisense oligodeoxynucleotides asODN or c-myb asODN or with both asODN in combinalion. All kinds of asODN could not only significantly inhibit K562 cells survival with the highest inhibitory rate of 64.7%?3.2%, but also dramatically inhibit DNA synthesis and the highest inhibitory rate was 85. 8 %?4.1%, decrease bcr/abl mRNA level almost completely and induce apoptosis significantly. The inhibition effect of antisense oligodeoxynucleotides phosphorothiodes s-asODN was stronger than that of unmodified asODN. The inhibition of the combination of bcr/abl and c-myb asODN was stronger than that of anyone alnoe. All the inhibitions exhibited in sequence-and time-dependent manner. We concluded that bcr/abl in pathogenesis of CML not only increased CML cells proliferation rate, but also decreased CML cells apoptosis rate. c-myb may participate in CML mainly by regulating bcr/abl. Trie results indicated that the modified asODN and multiple asODN targeting several oncogenes may advance to antisense gene therapy.

Objective To investigate whether genotypes of CYP3A5,MDR1 and cyclooxygenase-2 are associated with the sensitivity of vinorelbine-platinum to NSCLC.Methods The genotypes of CYP3A5(*3),MDR1 (2677G>T at exon 21 and 3435C>T at exon 26 and their haplotypes),cyclooxygenase-2 (-1 195G>A) were determined by RFLP-PCR and chemotherapy responses were analyzed in 69 non-small-celllung cancer (NSCLC) Chinese Han patients.They received a combination chemotherapy of vinorelbine-cispla-tin.Chi-square test was used to investigate the potential association of genotype with chemotherapy response.OR and 95% C1 were calculated.Results The 3435 CC genotype was associated with a significantly betterchemotherapy response compared with the combined 3435 CT and 1Tr genotypes(P=0.033).The 2677 GG genotype was also associated with a significantly better chemotherapy response compared with the combined 2677 GT and IT genotype(P=0.012).Moreover.patients with the 2677 G-3435 C haplotype seemed to have a better response to chemotherapy compared with those with the other haplotypes(P=0.063).CYP3A5*3 was not likely to correlate with sensitivity of vinorelbine-platinum to NSCLC.Cyclooxygenase-2-1195G>A was likely to have better response to vinorelbine but not statistically significant(P=0.067).Conclusion Polymor-Dhisms of MDR1 3435 C>T and MDR1 2677 G>A/T can be used for predicting treatment response to vinorel-bine-cisplatin chemotherapy in NSCLC patients.

It is reported by current investigations,that BNP can suppress heart hypertrophy but it can also depress compensatory hypertrophic response.BNP is an useful marker in the early diagnosis,prognosis,therapy guiding of heart failure and coronary heart disease,but comorbid conditions should be considered in the diagnosis of heart failure.The polymorphism in the 5'-flanking region of the NPPB gene is found to be related with essential hypertension.On the basis of some investigation,it is supposed that the instillation of BNP at the early stage of hypertension will contribute to therapy of hypertension.

Objective To evaluate the body burden of Cadmium(Cd) in normal children from Shenyang city,and to analyze the effect of Cd on kidney.Furthermore,to investigate the influences of living factors on the level of Cd in children,so as to make recommendations for children's health.Methods The subjects was composed of 1 170 healthy children recruited from 0 to 17 years old by cluster random sampling method.They were divided into three groups(0-5 years old group,6-11 years old group,12-17 years old group).Questionnaires were used to obtain essential information about age,gender,weight,socioeconomic status,medication,and so on.Second morning urine samples were collected to make routine analyses,urinary Cd(Cdob),urine microalbumin(MALB) and α1-microglobulin(α1-MG).Results 1.A total of 1 070 children including 544 males and 526 females were enrolled.2.The concentration of Cdob increased with age,in agreement with the level of urinary Cd corrected by urine specific gravity (Cdsg).However,the level of Cd in urine corrected by urinary creatinine(Cdcr) presented the opposite status with the age increasing.3.Cdcr and urine MALB adjusted by urinary creatinin(MALBcr) revealed a positive correlation(rs =0.45,P ＜ 0.01).4.Preference values for Cdob and Cdsg,Cdcr respectively were:0-5 years old ＜0.56 μg/L,＜0.83 μg/L and ＜2.17 μg/g Cr;6-11 years old ＜0.65 μg/L,＜1.01 μg/L and ＜1.23 μg/g Cr;12-17 years old ＜0.74 μg/L,＜1.15 μg/L and ＜ 1.25 μg/g Cr.Conclusions There is an age-dependent cumulative increases in Cdob.Although renal damage was not found in this study,the uptake of Cd should be reduced as much as possible and it is necessary to strengthen the follow-up study of Cdob in body burden.

Objective To explore the role and possible mechanism of CD28/B7 molecules in T cell ab-normal activation by establishing a mouse model of the autoimmune aplastic anemia. Methods Unmanipulated B6D2F1 or CByB6F1 hybrid mice were infused with about 40 × 106 lymph node (LN) cells from their C57BL/6 (B6) parent. Distribution of the injected T cells was assayed by CFDA-SE fluorescent staining. Anti-D80 and anti-CD86 monoclonal antibodies were used to block CD28/B7 signal transduction pathways and to test the change of peripheral blood of F1 mice at different times. Damage was assessed by histological staining. Bone marrow (BM) cells and LN iymphocytes were cultured to observe the effect of different number of lymphocytes in the LN on BM cells' hematopoiesis by the count of hematopoietic colony-forming cells, and to test the effect of cyclosporine A of different concentration on BM cells' hematopoiesis. Results Infusion of about 40 × 106/mouse B6 LN cells led to the development of BM failure in the fifth day: anemia, neutropenia and thrombocytopenia. At 21st day recipients began to appear death. Frozen section revealed the injected lymph node major in myeloid tissue. Pathological sec-tion revealed obvious immune-induced marrow destruction and tissue destruction. There was similar performance of the above in the recipients infused with anti-D80 and anti-CD86 monoclonal antibodies. B6 LN five times the num-ber of lymphocytes in the blood cells F1, CFU-E and CFU-G colony formation of a blank group difference was not significant (P >0.05); When B6 LN 10 times the number of lymphocytes in the blood cells F1, CFU-E colony forming significantly reduce the number of (P < 0.05) ; When B6 LN lymphocytes 50 times in F1 hematopoietic cells, not observed CFU-E colony formation. CFU-E and CFU-G colony formation reducing the number of lympho-cytes showed a dose-dependent. Cyclosporine A can significantly increase the CFU-E and CFU-G colony forming rate. Conclusion This mouse model indicates that activated lymphocytes play important roles in marrow destruc-tion in lymphocyte infusion-induced BM failure. Only blocking the CD28/B7 signal transduction can not block the abnormal T-cells activated.

The HPLC fingerprint differences ofRadix Platycodonis from different origins were studied to provide references for their quality control and production. The total platycodins were purified by DB101 macroporous resin. HPLC-ELSD fingerprints of the total platycodins for 39 batches ofRadix Platycodonis samples from 9 provinces were performed on an Agilent HC-C8 column (4.6 mm x 250 mm, 5μm) with gradient elution. The mobile phase was acetonitrile-0.5% acetic acid. The injection volume was 6μL. The flow rate was 0.5 mL·min-1. The temperature of drift tube was set at 90℃. And the gas flow (N2) was set at 1.2 mL·min-1. The results showed that there were large differences in the quality ofRadix Platycodonis from different origins with the common fingerprints of 6 batches of samples fromChifeng in Inner Mongolia as references. The quality ofRadix Platycodonis was closely related to the seeds, the ecological environment, the way of drying and storing and so on. It was concluded that it was important to strengthen the provenance base construction, standardization of the seeds, reasonable formulation of the regionalization, and standardization of the production processing for the cultivation and production ofRadix Platycodonis.

This study was aimed to compare the expectorant and antitussive actions ofPlatycodon grandilforum from different production areas in order to provide references for its cultivation and production. The antitussive activities ofP. grandilforum water extract from different areas were investigated through testing the cough times induced by ammonium hydroxide in mice. And the expectorant activities were studied by testing the amount of tracheal phenolsulfonphthalein excretion in mice. The results showed that the minimum effective dose ofP. grandiflorum fromChifeng of Inner Mongolia was 0.2 g·kg-1. Under this dosage,P. grandiflorum fromChifeng of Inner Mongolia can significantly reduce the cough frequency in mice (P < 0.01), and significantly prolong the cough incubation period in mice (P < 0.01).P. grandiflorum fromSichuan province,Shangzhou ofShaanxi province andChongqing can significantly decrease the cough frequency in mice (P < 0.05). P. grandiflorum from Sichuan province,Shangzhou ofShaanxi province andChifeng of Inner Mongolia can significantly increase the phenolsulfonphthalein excretion quantity in mice (P < 0.05). It was concluded thatP. grandilforum was effective for relieving cough and removing sputum. The effect ofP. grandilforum fromChifeng of Inner Mongolia was obviously stronger than that from other areas.

Syndrome, a very important concept in traditional Chinese medicine (TCM), is the essence and characteristics of TCM theory. Progress of related studies on syndrome will drive the development of TCM. Therefore, clinical and basic researches on syndrome have focused on the hotspot of TCM. In recent 60 years, many scholars have discussed the concept, essence and the establishment of standardization of syndrome from different angles and layers. Although many results have been obtained, there is still a certain one sidedness and dispute. Therefore, looking for a new theoretical tool to reveal the scientific connotation of TCM syndrome is imperative. TCM syndrome and biological entropy belong to two different subject concepts, but can also reveal the physiological and pathological state in the changes of life body growth. This article discussed isomorphism of TCM syndrome and biological entropy from the concept, theoretical background and characteristics, with a purpose to provide certain guiding significance to study and promote standardized researches on TCM syndrome.