Objective To study the effects of atorvastatin on ischemic cardiomyopathy patients with chronic heart failure and to investigate the changes of serum levels of CRP and serum levels of uric acid after treatment.Methods Fifty patients with ischemic cardiomyopathy(NYHAgradeⅡ～Ⅳ) were randomly divided into two groups: the therapy group received atorvastatin 10mg/d(n=25) for 4 weeks and the control group received placebo(n=25).In addition,20 healthy peoples were observed.Before and after treatment,the parameters of plasma uric acid,serum CRP and cardiac function evaluated by echocardiogram were measured.Results After 4 weeks,patients receiving atorvastatin exhibited a modest reduction in serum CRP and serum uric acid compared with control group(P

Biomarkers of non-small cell lung cancer(NSCLC)can facilitate an efficient diagnosis, improve therapeutic effects,reduce the side effects of other treatments,ameliorate prognosis and predict relapse of the disease and drug resistance. This paper summarized the biomarkers which were newly discovered and their functions in clinical practices in order to guide individualized treatment and help adjust treatment. The exploration of biomarkers of NSCLC will become a priority in future research.

0.2mM Cytidine 3', 5'-monophosphate (3', 5'-cCMP) inhibits not only the IL-2 production of human peripheral blood mononuclear cells (PBMC) but also the expression of IL-2 receptors. The inhibitory rate on expression of IL-2 receptors is 28.9+1.9%. The proliferation of CTLL-2 cells can be stimulated by 3', 5'-cCMP in concentration from 0.00625mM to 0.2mM when the presence of IL-2 is sufficient. The stimulative effect in low concentration of 3', 5'-cCMP is more obvious than that in high concentration.

OBJECTIVE To investigate the effect of the dosing time on the pharmacokinetics of gefitinib and its potential mechanism. METHODS Female BALB/c nude mice were housed under standardized 12 h light/dark circadian conditions(light on at 7:00,off at 19:00)for two weeks before a non-small cell lung cancer(NSCLC)model was established. Two weeks later,they were divided into 2 groups(8:00,20:00)randomly. Gefitinib was orally administered at the dose of 1 mg · kg-1 to the mice in each group at 8:00 or 20:00,respectively. Blood was collected at 10 different time points after each administration. Livers were collected every 4 h during the 24 h period from the non-administrated nude mice of NSCLC model. The plasma concentration of gefitinib was determined through an HPLC-MS/MS and the parameters were calculated by WinNonlin 6.3. The total RNA was extracted from livers,purified, synthesized to cDNA that was subjected to qRT-PCR analysis for mRNA expression levels of cyto?chrome P450 enzymes(Cyp)3a11,Cyp3a13,pregnane X receptor(PXR)and constitutive androstane receptor (CAR). RESULTS The area under the plasma concentration-time curve (AUC) and mean residence time (MRT) of 8:00 administration group were higher than those of 20:00 administration group(P<0.05). The clearance(Clz/F) of 8:00 administration group was lower than that of 20:00 administration group(P<0.05). The mRNA expression levels of PXR and CAR were consistent with those of Cyp3a11 and Cyp3a13. CONCLUSION Circadian rhythm exists in the pharmacokinetics of gefitinib and it may be closely related to CYP3A and its regulator genes.

MiR-494 involves in cell cycle regulation,differentiation and apoptosis processes of normal ceils.Recent study shows that abnormal expression of miR-494 is associated with oncogenesis closely,and it participates in the invasion and metastasis of tumor cells and so on.MiR-494 is not only a tumor suppressor gene,but also can be considered as a cancer-promoting gene.MiR-494 can regulate the oncogenesis and development of the tumor through a variety of target genes and signaling pathways.

Aim To prepare the dextran derivative nanoparticles with higher transfecting efficiency to mda-mb-435 human breast cancer cells.Methods The dextran 40 and the sodium periodate were reacted with different mole ratio to form the intermediate:oxidized dextrans having different aldehyde content.With different reactants matching,the spermine were grafted onto the oxidized dextrans mentioned above to form the dextran-spermine imine conjugates which were reduced by the excess reducing agent NaBH4 to produce the end products 9 species of dextran derivative nanoparticles(extran-spermine amine conjugates).The dextran derivative nanipartical of the highest gene transfecting efficiency was selected from the 9 species of dextran derivative nanoparticles by the experiment of gene transfection,using the pEGFP-C1 plasmid as the reporter,the mda-mb-435 human breast cancer cells as the transfected cells.Results The dextran derivative nanoparticles with the highest transfecting efficiency was the one that had the highest content of spermine grafted onto the oxidized dextran40 obtained by the reaction between sodium periodate and dextran40 with the mole ratio of 0.8.Conclusion The dextran derivative nanoparticles of the highest transfecting efficiency to the mda-mb-435 human breast cancer had been prepared.

Objective:To investigate the protective effects of Panax notoginseng on myocardial ischemia injury in dogs and study the spectrum-activity relationship of Panax notoginseng. Methods:Firstly, the HPLC fingerprint analytical method for Panax notogin-seng was established, and then the dog model of acute myocardial ischemia was established by left anterior descending coronary liga-tion. Bivariate correlation analysis and multivariate regression analysis were used to correlate the spectrum-activity relationship between the fingerprints and the anti-myocardial ischaemia activity, and the spectrum-activity relationship and efficacy material foundation of Panax notoginseng were determined. Results:The main effective components were Ginseng saponin Rg1 and Rb1 and notoginseng sapo-nins R1 etc. Notoginseng saponins R1 could significantly inhibit the increase of serum lactate, and ginseng saponin Rg1 could inhibit the increase of FFA in serum, which was the main component in Panax notoginseng for the treatment of myocardial ischemia. Conclusion:The effective substances in Panax notoginseng are obtained by investigating the relationship between the spectrum and efficiency, and a new method for the evaluation of spectrum-activity relationship for Panax notoginseng is established. It can objectively reflect the inher-ent quality of the drug and provide a new strategy for the further research of traditional Chinese medicines.

OBJECTIVE To investigate the effect of the dosing time on the pharmacokinetics oferlotinib.METHODS Female C57BL mice were contained under standardized 12h light/dark circadianconditions (lights on at 7:00,off at 19:00)for 3 weeks and randomly assigned into six groups.Erlotinibhydrochloride was orally administrated to the mice in each group at 8:00,12:00,16:00,20:00,24:00and 4:00,respectively.Blood was drawn from the eyeballs of the mice at 12 different time points aftereach administration.The plasma concentration of erlotinib was determined through a high-performanceliquid-chromatographic assay and the parameters were calculated by WinNonlin. RESULTSThe area under curre (AUC)and mean residence time (MRT)of these groups were apparently differ-ent.AUC0 ~24 h and MRT0 ~24 h were the lowest in the 20:00 administration group as compared to othergroups (P<0.01 ).Tmax of the 20:00,24:00 and 4:00 groups was apparently higher than that of the8:00 and 12:00 groups (P<0.01 ).The clearance of the light phase groups was lower than that of thedark phase groups (P<0.01 ),with the highest in the 20:00 group.The peak value of cmax appeared inthe 12:00 group and the lowest in the 20:00 group (P<0.01 ).CONCLUSION Circadian rhythm playsa critical role in pharmacokinetics of erlotinib in mice.

ABSTRACT AIM To investigate the effect of ch-itosan on protein kinase C (PKC) activitives and diacyl glycerol(DAG)concentration in murine peritoneal macrophages. METHODS A new ion-pair reversed-phase high liquid chromatography and ra-dioimmunoassay were used to determinate the activity of PKC and the concentration of DAG respectively. RESULTS ( 1) Chitosan induced activation and translocation of PKC in murine peritoneal macrophages. The peak time was 25 min and the activity of PKC came back the basic level at 1. 5 h. (2)Chitosan increased the production of DAG in murine peritoneal macrophages. The peak time was 30 s and the concentration of DAG came back the basic level at 3 min. CONCLUSION The im-munopoteniating effect of chitosan may be associated with the channel of DAG /PKC.

Objective:To re-establish the quality control standard for Weiling granules. Methods:The 4 chief herbs in the prepa-ration, radices paeoniae alba, licorice, rhizoma corydalis and hawthorn were identified by TLC qualitatively. The content of paeoniflor-in in radices paeoniae alba was determined by HPLC. The separation was performed on an Agilent XDB-C18 (250 mm × 4. 6 mm, 5μm)coulme with mobile phase consisting of acetonitrile-0. 1% phosphoric acid solution (10:90). The detection wavelength was 230 nm and the flow rate was 1. 0 ml·min-1 . Results:The spots in TLC were clear without any interference. The linear range for paeoni-florin was 0. 151-1. 212 μg(r=0. 999 9,n=5). The average recovery was 99. 63% and RSD was 2. 01%(n=9). Conclusion:The method is simple and accurate with high reproducibility, which can be used for the quality control of Weiling granules.