Aim To study the effects of Triptolide (TPL) on HL-60 cells in vitro and in vivo.Methods MTT was used to examine the effects of TPL on proliferation of HL-60 cells;TUNEL assay was used to detect apoptotic cells.The effect of TPL on xenograft growth of HL-60 cells was evaluated by tumor inhibition rate.Results In vitro TPL inhibited the proliferation and induced apoptosis of HL-60 cells in a dose-dependent manner.In vivo TPL inhibited xenograft growth of HL-60 cells with the highest inhibition rate of 53.5%.Conclusion TPL is able to inhibit the proliferation of HL-60 cells and induce apoptosis of HL-60 cells in vitro and in vivo.

Objective:To understand the state of Chlamydia pneumoniae (Cpn) infection in patients with coronary hear disease (CHD), and explore the relationship between Cpn infection and the gonesis and progressin of CHD.Methods:By means of PCR and ELISA, Cpn IgG antibody and nucleic acid were detected in 159 patients with CHD and 41 control subjects.Results:The positivity rate of Cpn DNA was 43 40%(69/159) in the patient group and 7 32%(3/41) in the control group, showing obvious difference between the two groups( P

ObjectiveTo explore the effect of doctor-nurse integration mode in treating patients with liver cirrhosis treated with endoscopic variceal ligation (EVL).Methods According to the random number table,74 patients were randomly divided into control group and experiment group with 37 in each group.The control group was given routine nursing,while the experiment group was managed by doctor-nurse integration nursing mode.The two groups were compared in respect of early re-bleeding after EVL and mastery of health knowledge.Result The mastery of health-related knowledge in the experiment group was better than the control one and the rate of re-bleeding was significantly lower (P<0.05).Conclusion The doctor-nurse integration care mode can reduce the early postoperative re-bleeding after EVL in patients with liver cirrhosis and enhance the health education awareness.

Objective Analysis the risk factors which maybe caused the cerebral hemorrhage after the liver transplantation, and then make out the counter nursing measures. Methods Selected 12 patients with cerebral hemorrhage after the liver transplantation as the experimental group, and then matching 48 patients without cerebral hemorrhage after the liver transplantation as the control group. Analysis the factor which related the cerebral hemorrhage. Results The factors which related the cerebral hemorrhage after the liver transplantation included in the Intensive Care Unite, heme level, Child level, APTT, albumin, blooding volume during the operation, operation time and the postoperative blood platelet level. The factors of Child level and the blooding volume during the operation were the independence risk factors of cerebral hemorrhage. Conclusion The factors of Child level and the blooding volume during the operation were the independence risk factors of cerebral hemorrhage, we should carry out counter nursing measures to prevent them.

Aim To investigate the cytotoxicity of XN4 against AML cells, and the underlying mechanisms by which XN4 might induce DNA damage and apoptotic cell death through reactive oxygen species ( ROS ) . Methods The proliferation inhibition ratio of AML cells was measured by MTT. The level of extracellular ROS, DNA damage, cell cycle process and apoptosis were tested by flow cytometry ( FCM ) . Western blot was applied to test the expression of proteins. Results XN4 significantly inhibited the proliferation of HL-60 and KG1α with IC50 ( 2. 79 ± 0. 15 ) μmol · L-1 and (2. 76 ± 0. 20) μmol·L-1 respectively. XN4 signifi-cantly increased the generation of intracellular ROS, followed by inducing DNA damage and activating the ATM-γ-H2AX signaling, which led to increases of cells in the S phases of the cell cycle. Subsequently, XN4 induced apoptotic cell death through activation of caspase-3 and Parp. Moreover, the above effects were all reversed by the ROS scavenger N-acetylcysteine ( NAC ) . Conclusion XN4-induced DNA damage and cell apoptosis in AML cells are mediated via ROS generation.

Objective To investigate the molecular characterization of a Chinese pedigree with rare β thalassemia genotype.Methods Phenotypic analysis was performed using standard hematological tests to measure red blood cell parameters, including RBC,Hb,MCV,MCH,MCHC and RDW.SPIFE automatic Hb agarose gel electrophoresis instrument was used to measure hemoglobin fraction Hb A,Hb A2 and Hb F.The alleles of β thalassemia mutation were determined by RDB assay, and then cloning and sequencing were performed to define the mutation sites.Results The proband and his father had typical microcytic hypochromic anemia with low MCV and MCH(79.8, 63.1 fl and 19.9, 20.9 pg, respectively) and high level of Hb A2 (5.66% and 5.60%, respectively).The proband′s mother had normal MCV and MCH. β thalassemia mutation analysis with RDB assay showed that the proband had thalassemia minor resulting from double mutations on one globin gene.One showed codons 41/42 (-TTCT) mutation and the other was CAP mutation from positions +40 to +43 in the promoter region.These two mutations were inherited from his father.The genotype of the proband and his father was β41/42、CAP/βA ,and the genotype of his mother was βA/βA.Conclusions It′s rare that double mutations occur on single β globin gene, with one mutation on CD41/42(-TTCT) and the other mutation from positions +40 to +43 relative to the mRNA cap site in the promoter region.The findings enrich knowledge of the mutation spectrum of β thalassemia.

Objective To explore the efficacy of noninvasive continuous positive airway pressure (nCPAP) on infants with degree Ⅲ laryngeal obstruction.Methods Sixty-two infants of acute laryngitis with degree Ⅲ laryngeal obstruction were divided into observation group (n =32) and control group (n =30),which were admitted to our PICU from Jan 2007 to Dec 2012.Thirty-two cases in the observation group were treated using the nCPAP.Thirty infants in the control group received regular mouth-nose mask oxygen therapy.The infants in both groups were given small-dose intravenous injection of methylprednisolone and inhalation of oxygen-driven nebulized epinephrine.Results In a hour after treatments,the effective rate in observation group was 100％,and the average duration for the treatments to take effect was (43.65 ±10.34) min.In control group,symptoms of 13 infants were improved within one hour (the effective rate was 43.3 ％),and symptoms of 22 infants were improved within two hours (the effective rate was 73.3 ％).The average duration for the treatments to take effect in control group was (73.70 ± 15.86) min.The differences of effective rates and take-effect duration between the two groups were statistically significant (P ＜ 0.01).After two hours' treatments,hypoxic symptoms of all infants in the observation group were obviously improved.The average heart rate[(172.24 ± 7.80) times per minute],the average oxygen saturation (90.16％ ±2.58％),the average arterial partial pressure of oxygen [(65.33 ±6.27) mm Hg],and the average partial pressure of carbon dioxide [(48.60 ± 4.39) mm Hg] were improved significantly compared with those before treatment [(146.39 ± 10.61) times per minute,98.53 ％ ± 0.42 ％,(93.64 ± 5.68) mm Hg,(44.25 ±5.76) mm Hg)].The differences were statistically significant (P ＜ 0.01).Conclusion The nCPAP auxiliary treatment is effective for infants with degree Ⅲ laryngeal obstruction,more effective than the regular oxygen therapy.

HepG2 ceils were treated with various concentrations of tumor necrosis factor-or (TNF-α) for 24 hours. RT-PCR and Western blot were used to measure protein tyrosine phosphatase-1 B(PTP-1B)expression, and luciferase reporter assay was used to detect NF-kB activity. The results showed that treatment of HepG2 cells with TNF-α for 24 hours led to upregulation of PTP-1B and NF-kB activity in a dose-dependent manner. Inhibition of NF-kB by PI)TC significantly attenuated TNF-α-induced PTP-IB expression in HepG2 cells. Thus, the transactivation of NF-kB seems to play an important role in the expression of PTP-1B in HepG2 cells induced by TNF-α.

Aim To investigate the effect of BMS- 345541 on the repair of DNA DSBs induced by VP-16 in AML cells and its possible mechanism. Methods The effects of BMS-345541 on the sensitivity of AML cells to VP-16 were determined by MTT. Flow cytome-try ( FCM) was applied to test the level of DNA dam-age, cell cycle progression and apoptosis in AML cells. High content analysis ( HCA) was used to verify the amount ofγ-H2AX,p-ATM,RAD51 in AML cells. Results BMS-345541 could significantly inhibit the proliferation of AML cells induced by VP-16 . BMS- ＜br> 345541 increased the amount of RAD51 foci and p-ATM foci in AML cells treated with VP-16 after 6 hours , which led to increased numbers of cells in the G2/M phases of the cell cycle,then induced apoptotic cell death. Conclusion BMS-345541 sensitizes AML cells to VP-16 via selective inhibition of homologous recombinational repair of DNA double-strand breaks.

Objective To identify one umbilical blood sample with abnonnal gap-PCR products of three bands of α2,-α3.7 and-SEA.further family pedigree were analyzed for the source of genetic variations,Methods One fetal umbilical blood sample was drawn from a woman of 24-weeks pregnancy.Gap-PCR for α-thalassemia was routinely conducted and abnornlal three bands of α2.-α3.7 and-SEA were observed.which could not be interpreted according to the kit manual and suspected as rare variation.With informed consen,DNA samples from the parents and grandparents were obtained for further study.Singleplex andnested PCR techniques were utilized to analyze the molecular characteristics of DNA samples from this fetus and its parents and grand-parents.Results Hematological phenotype study showed that fetal Hb Ban's was 7.6%,and its mother and maternal grandfather were both with typical α-thalassemia.while its father,grandfather and grandmother and maternal grandmother are without abnormal hematological change.Molecular study showed that fetal blood DNA was a heterozygosity for HKaa and-SEA.its father and grandfather are both HKαα/αα,its mother and maternal grandfather are both-SEA/aa,its grandmother and maternal grandmother are with both normal alleles of αα/αα.Then after genetic counseling the fetas was saved and iS a she baby now.Conclusion ThroUgh careful molecular tests one case of prenatal heterozygosity of HKαα/-SEA was identified,and the fetus is kept successfully through careful clinical counseling.