Objective: To investigate the role of human umbilical vein endothelial cells (HUVEC) in supporting hematopoiesis and the expansion of hematopoietic stem/progenitor cells in vitro. Methods: According to the fact that HUVEC supernatant has colony stimulating activity shown by methylcellulose colony-forming assay and HUVEC can maintain the survival of mononuclear cells for at least four weeks in vitro, CD34+ cells from umbilical cord blood were seeded with (HUVEC group) or without (control group) HUVEC monolayer. Every week cells were collected and counted, the frequency of CFU-GM was measured by using methylcellulose colony-forming assay, and the percentage of CD34+ and CD41a+ cells was measured by flow cytometry. Results: In control group，all the CD34+ cells died in two weeks. However, in HUVEC group,most nucleated cells and CD34+ cells were expanded by 68.1±14.8 fold and 6.6±1.4 fold，respectively at the third week while CFU-GM expansion reached its peak (5.7±2.1 fold) at the week 2. Moreover, the percentage of CD41a+ cells was enhanced significantly, reaching a maximum (15.6%) at the week 3. Conclusions:HUVEC can support hematopoiesis in vitro and expand the hematopoietic progenitor cells and CD41a+ cells in direct contact coculture.

OBJECTIVETo observe the effect of Qinggan Jiangtang tablet (QJT) in improving the insulin resistance (IR) in patients with multiple metabolic syndrome (MMS).

METHODSAdopting randomized controlled double-blinded method, 60 patients with MMS were divided equally into two groups. The treated group was treated by oral taking of QJT 3 tabs, twice a day and the control group treated by oral taking of Glucophage 3 tabs, twice a day, the therapeutic course for both groups was 1 month, and the observation lasted for 2 successive courses.

RESULTSAfter treatment, levels of blood glucose, fasting and postprandial blood glucose, C-peptide and IR were significantly reduced with markedly improvement of beta-cell function in both groups, the difference between the two groups showed no significance. Change of plasma level of free fatty acids before and after treatment in both groups was insignificant.

CONCLUSIONQJT has the effects on reducing blood glucose, blood lipids, blood pressure and IR and improving function of beta cells.

Adult ; Aged ; Double-Blind Method ; Drugs, Chinese Herbal ; therapeutic use ; Female ; Humans ; Hypoglycemic Agents ; therapeutic use ; Insulin Resistance ; Male ; Metabolic Syndrome ; drug therapy ; Metformin ; therapeutic use ; Middle Aged ; Phytotherapy ; Tablets

OBJECTIVETo seek for an effective therapy for abducent paralysis.

METHODSSeventy-six cases of abducent paralysis were randomly divided into an acupoint-injection group and a western medicine group. The acupoint-injection group were treated by point-injection therapy, with Jingming (BL 1), Yangbai (GB 14), Sibai (ST 2), Tongziliao (GB 1) on the affected side, and bilateral Ganshu (BL 18) used as basic points and compound Danggui Injection as the principal injected medicine, and in combination with corresponding acupoints and injected medicine according to different syndrome types. The western medicine group were treated with routine western medicine therapy. After treatment for 36 days, the therapeutic effects were recorded and analyzed statistically.

RESULTSThe total effective rate was 94.7% in the acupoint-injection group and 76.3% in the western medicine group with a significant difference between the two groups (P < 0.05); there was a significant difference between the two groups in eyeball moving rate and restoration of cateral rectus (P < 0.05).

CONCLUSIONChinese drug acupoint-injection therapy has a definite therapeutic effect on acquired abducent paralysis, which is better than that of routine western medicine.

Abducens Nerve ; Acupuncture Points ; Adult ; Aged ; Female ; Humans ; Male ; Medicine, Chinese Traditional ; Middle Aged ; Ophthalmoplegia ; therapy

Expression of HLA class Ⅱ antigens(HLA-DR, DQ and DP), interleukin2 receptors(IL-2R) and transferrin receptors(TfR) of blood monocytes from 10 patients with insulin-dependent diabetes meIlitus (IDDM) were assayed with the indirect immune fluorescence technique using corresponding monoclonal antibodies and the FITC-labelled second antibody. The results showed that the number of HLA-DQ~+ monocytes was much more in diabetics than in normal controls. The percentages of HLA-DR~+ and HLA-DP~+ monocytes in diabetics were not different significantly from those in normal controls. Besides, IL-2R~+ and TfR~+ monocytes were also found to be very much increased in diabetics as compared with controls. It was possible that increased expression of HLA-DQ antigen, IL-2R and TfR of monocytes in patients with IDDM might play a role in the pathogenesis of the autoimmune reaction.

Objective To evaluate the clinical efficacy of early stage u-sing of tirofiban in the treatment of coronary atherosclerotic herat disease ( CAHD) by percutaneous coronary intervention ( PCI).Methods Two hundred and six cases with CAHD were included in this study and divid-ed into 3 groups.The perioperation group with 60 cases [ tirofiban using 24-hour before PCI, 0.4 μg· (kg· min) -1],ivggt,30 min, followed by 0.1μg· (kg· min) -1, the immediate group with 56 cases( tirofiban using in the procedure of PCI ) and the control group with 90 case(with-out tirofiban ).The platelet aggregation , thrombolysis in myocardial in-farction ( TIMI ) improvement and major cardiovascular events were com-pared among the three groups.Results The platelet aggregation was sig-nificant decreased in the three groups compared with prior PCI ( both P<0.05 ) , with the immediate group and perioperation group much lower than control group ( P <0.05 ) .The grade 3 TIMI was significant in-creased after PCI ( both P<0.05 ) with immediate group and periopera-tion group much higher than control group ( P<0.05 ) .The complication incidence in the control group was higher than that in immediate and perioperation groups ( P<0.05 ).Conclusion Tirofiban is safe in the treatment of CAHD by PCI which can significantly inhibit platelet aggre-gation and reduce the risk of acute thrombosis.

OBJECTIVETo investigate the protective effect of luteolin on isolated rat heart in hypothermic preservation.

METHODSForty male SD rats were randomly divided into 4 groups (n = 10): control group, luteolin low-dose group (7.5 micromol/L), middle-dose group (15 micromol/L) and high dose group (30 micromol/L). Langendorff model of isolated rat heart was used. After 30 min basal perfusion, the hearts were stored in University of Wisconsin solution (UW solution) at 4 degrees C with luteolin (7.5, 15 and 30 micromol/L) or without luteolin for 12 h and followed by 60 min reperfusion. The recovery of cardiac contractile and diastolic function, coronary flow (CF), creatine kinase (CK) leakage in the coronary effluent, myocardial water content were determined. The myocardial ultrastructure was also observed.

RESULTSThe results revealed that luteolin improved the recovery of left ventricular peak systolic pressure and +/- dp/dtmax dose-dependently and increased coronary flow. The leakage of creatine kinase in the coronary effluent was significantly reduced in luteolin-added hearts. Impairment of myocardial ultrastructure after 12 h hypothermic preservation was obviously alleviated in hearts luteolin-added group compared with that in control group. There were no differences between the groups in myocardial water contents.

CONCLUSIONLuteolin as a supplementation in cardiac preservation solution can significantly improve the hypothermic preservation effects on rat heart and have myocardial protection effect, especially in luteolin-added with 30 micromol/L.

Animals ; Cryopreservation ; In Vitro Techniques ; Luteolin ; pharmacology ; Male ; Myocardium ; Organ Preservation ; methods ; Organ Preservation Solutions ; Rats

Objective To compare the clinical efficacies regarding femoral artery or radial artery approaches on coronary artery interventional therapies.Methods 360 patients were randomly divided into intervention group via femoral artery (TFI) or transradial coronary intervention (TRI) group.Postoperative observation on the two said groups of patients with vascular lesion characteristics,feasibility factors ( success rate of interventional therapy puncture,time of operation and hospitalization)and complications,were made.Results There were no significant differences between the two groups on the characteristics of vascular lesion (P＞0.05).Success rates of the two groups were 97.78％ and 96.67％ respectively.The differences on success rate,time of operation were not statistically significant (P＞0.05) while the average time of puncture,the mean duration of hospitalization and the rates of complications were significantly different ( P＜ 0.05 ).Conclusion The two methods under comparison had similar success rate and feasibility.However,the complications related to radial artery interventional therapy were much less than the femoral artery interventional therapy.As having better safety,radial artery interventional therapv seemed to have applicable value on clinical oractice.

OBJECTIVETo investigate the inhibitory activities of norcantharidin (NCTD), a demethylated analogue of cantharidin, on Hep3B cells (a human hepatoma cell line) with deficiency of p53.

METHODSThe survival rate of the Hep3B cells after treating with NCTD was measured by MTT assay. Cell cycle of treated cells was analyzed by flow cytometry, and DNA fragmentation was observed by electrophoresis. The influence of inhibitors for various caspases and anti-death receptors antibodies on the NCTD-induced apoptosis in the cells was determined.

RESULTSNCTD treatment resulted in growth inhibition of Hep3B cells in a dose- and time-dependent manner. Cell cycle analysis of the cells after treatment with NCTD for 48 h shows that NCTD induced G(2)M phase arrest occurs at low concentration ([Symbol: see text] 25 μmol/L) but G(0)G(1) phase arrest at high concentration (50 μmol/L). The addition of both caspase-3 and caspase-10 inhibitors completely inhibited DNA fragmentation. Addition of anti-TRAIL/DR5 antibody significantly inhibited DNA fragmentation.

CONCLUSIONNCTD may inhibit the proliferation of Hep3B cells by arresting cell cycle at G(2)M or G(0)G(1) phase, and induce cells apoptosis via TRAIL/DR5 signal transduction through activation of caspase-3 and caspase-10 by a p53-independent pathway.

Antibodies, Neoplasm ; pharmacology ; Antibodies, Neutralizing ; pharmacology ; Apoptosis ; drug effects ; Bridged Bicyclo Compounds, Heterocyclic ; pharmacology ; Carcinoma, Hepatocellular ; enzymology ; pathology ; Caspase 10 ; metabolism ; Caspase 3 ; metabolism ; Caspase Inhibitors ; pharmacology ; Cell Cycle Checkpoints ; drug effects ; Cell Line, Tumor ; Cell Proliferation ; drug effects ; DNA Fragmentation ; drug effects ; Humans ; Immunohistochemistry ; Liver Neoplasms ; enzymology ; pathology ; Receptors, TNF-Related Apoptosis-Inducing Ligand ; metabolism ; Signal Transduction ; drug effects ; TNF-Related Apoptosis-Inducing Ligand ; metabolism ; Tumor Suppressor Protein p53 ; metabolism

OBJECTIVETo study the function of radiosurgery on malignant glioma by analyzing prognostic factors affecting malignant gliomas treated with linac radiosurgery.

METHODFifty-eight patients with deep situated malignant gliomas, aged 7 to 70 years, 28 anaplastic astrocytomas and 30 glioblastomas multiforme were analyzed. The median volume of tumor was 10.67 cm3, and median prescription dose for linac radiosurgery was 20 Gy. Results were analyzed with Kaplan-Meier curve and Cox regression.

RESULTIn follow-up 44.8 percent tumors (26 patients) decreased in size. Median tumor local control interval was 10 months, 15 months for anaplastic astrocytomas, and 9 months for glioblastoma multiforme. Tumor local control probability was 37.9 percent for 1 year and 10.3 percent for 2 years. Median survival was 22.5 months for anaplastic astrocytoma, 13 months for glioblastoma multiforme, and 15 months for all patients. The survival probability was 79.3 percent at 1 year and 20.6 percent at 2 years. Isocenter numbers and tumor volume were the prognostic factors for tumor control, but conformity index was the prognostic factor for survival by Cox regression analysis. Considering pathology, only isocenter number and target volume significantly affected tumor control interval. Complications appeared in 44.8 percent patients and the median interval of complication onset was 8 months. Symptomatic cerebral edema was observed in 31.0 percent patients.

CONCLUSIONLinac radiosurgery can effectively improve tumor local control and prolong survival for deep situated malignant gliomas.

Adolescent ; Adult ; Aged ; Astrocytoma ; mortality ; pathology ; surgery ; Brain Neoplasms ; mortality ; pathology ; surgery ; Child ; Female ; Follow-Up Studies ; Glioblastoma ; mortality ; pathology ; surgery ; Humans ; Male ; Middle Aged ; Neoplasm Recurrence, Local ; Prognosis ; Radiosurgery ; Survival Rate

OBJECTIVETo investigate the Malytea Scurfpea fruit (MSF) on melanocyte adhesion and migration.

METHODHuman epidermal melanocytes were treated with MSF and Ginger respectively, then adhesion to bovine serum fibronectin-coated culture dishes was checked. Control and treated cells were also examined for migration into micropore filters coated with the same protein.

RESULTCompared with control, MSF treated melanocytes were obviously easier to adhere to the dishes and move into the filters in a dose-dependent manner. When the dose of MSF was 200 mg x L(-1), it could not reincrease melanocyte adhesion and migration. At 10 mg x L(-1), under every other concentrations of MSF, there was no marked difference among MSF-treated, Ginger-treated and untreated melanocytes (P < 0.05) when adhesion test were studied. But to migration, even at 10 mg x L(-1) MSF, there was obvious increased migration compared with MSF-untreated or Ginger-treated melanocytes (P < 0.01).

CONCLUSIONMSF has effect on melanocyte adhesion and migration, which can explain, in part, the capacity of MSF to modulate melanocyte function in vitiligo lesions.

Cell Adhesion ; drug effects ; Cell Movement ; drug effects ; Cells, Cultured ; Drugs, Chinese Herbal ; isolation & purification ; pharmacology ; Fruit ; chemistry ; Ginger ; chemistry ; Humans ; Melanocytes ; cytology ; drug effects ; Plants, Medicinal ; chemistry ; Psoralea ; chemistry