Objective: To explore whether gancyclovir (GCV) can inhibit the proliferation and induce the erythro-differ-entiation of the K562 human myeloid leukemia cell line. Methods: 562 cells were cultured with GCV for 4 days to detect cellular changes cloning efficiency, benzidine-positive rate, flow eytometry analysis, and telomerase activity. Results: When 562 cells grew in the medium containing GCV, the cellular growth and division were gradually suppressed,growth fracture decreased and further differentiation towards the cell producing hemoglobins was found. Conclusion: GCVcan inhibit proliferation and induce erythro-differentiation of K562 cells.

Objective To evaluate the efficacy and safety of intravenous itraconazole followed by itraconazole capsule.Methods An open-label,randomized,non-controlled study was conducted.Itraconazole was administered intravenously at a dose of 200 mg,q12h for the first 2 days,then once daily from the 3rd to the 14th day and followed by itraconazole capsule,200 mg,q12h for 2 to 4 weeks.Results A total of 25 patients were enrolled in the study,including 12 documented cases of invasive fungal in- fection,11 probable cases and 2 possible cases.Twenty-two patients were eligible for clinical efficacy analysis,of which 11 were cured,4 significant improved,2 improved and 5 failed.The effective rate was 68.2%(15/22),and the cure rate was 50.0%(11/22).Twenty-four strains of fungus were obtained,including 22 strains of Candida spp.and one each of Aspergil- lus and Histoplasma capsulatum.Eighteen strains of fungus were eradicated after itraconazole treatment.The eradication rate was 75.0%(18/24).In the 25 cases who received at least one dose of intravenous itraconazole,itraconazole-related or proba- bly-related clinical adverse event was reported in 3 patients,including drug fever,chest discomfort,palpitation and decreased appetite,Itraconazole-related or probably-related laboratory abnormality was reported in 4 cases.AST or ALT elevation was the most common laboratory abnormality.One patient was found to have increased blood creatinine,BUN and hemolysis.Most adverse effects were mild and tolerable except one serious adverse effect.Conclusions Intravenous itraconazole followed by itraconazole capsule therapy has good efficacy in the treatment of systematic fungal infection.The regimen is well-tolerated in most patients.

AIM:To investigate the expression of transmembrane protein 16A(TMEM16A) in Fischer rat thy-roid follicular epithelial ( FRT) cells and its electrophysiologic properties .METHODS: The eukaryotic expression vector of pUB6/V5-TMEM16A was constructed and transfected into FRT cells by liposome-mediated transfection .In order to ob-tain the high efficiency of gene transfection and expression , the quantity and ratio of lipid/DNA complexes were optimized . The FRT cells stably expressing TMEM16A were gained by the selection with blasticidin and confirmed by the techniques of RT-PCR and immunofluorescence .The expression and location of TMEM 16A in the FRT cells were observed under an in-verted fluorescence microscope .TMEM16A protein was associated with calcium-dependent chloride current , as measured with halide-sensitive fluorescent protein and patch-clamp technique .RESULTS: The results of double digestion and se-quencing indicated that TMEM16A was cloned into pUB6/V5.The results of RT-PCR and immunofluorescence confirmed that TMEM16A was expressed in the FRT cells after transfection with TMEM16A.The classical calcium-activated chloride channel currents were recorded in the FRT cells stably expressing TMEM 16A by the technique of patch-clamp and halide-sensitive fluorescent protein YFP-H148Q/I152L.CONCLUSION:The protein expression of TMEM16A in the FRT cells was observed.TMEM16A is the molecular identity of calcium-activated chloride channels .

BACKGROUND: Platelet-rich plasma (PRP) and naringin can both promote proliferation and induce osteogenic differentiation of mesenchymal stem cells. However, their combined use is rarely reported. OBJECTIVE: To observe the effect of PRP combined with naringin on the osteogenic differentiation of human bone marrow mesenchymal stem cells(hBMSCs)in vitro. METHODS: BMSCs at passage 3 were divided into four groups: (1) blank control group, cells were cultured in α-MEM; (2) PRP group, cells were cultured in α-MEM containing PRP; (3) naringin group, cells were cultured in α-MEM containing naringin; and (4) combined group, cells were cultured in α-MEM containing PRP and naringin. The contents of used PRP and naringin were 12.5% and 50 μg/L respectively. Cell proliferation was detected by MTT assay. Expression of related genes in hBMSCs was detected by RT-PCR. Alkaline phosphatase staining, collagen type I immunohistochemical staining, and alizarin red staining were used to analyze the osteogenic differentiation of hBMSCs. RESULTS AND CONCLUSION: The proliferation of hBMSCs was increased in each group, especially in the combined group. Cells in all the groups except the blank control group were positive for alkaline phosphatase staining, collagen type I immunohistochemical staining, and alizarin red staining, and the positive effect was more obvious in the combined group. However, negative or weakly positive response was found in the blank control group. At 7 and 14 days, the expression of alkaline phosphatase and collagen type I was significantly higher in the PRP, naringin and combined groups than the blank control group (P < 0.05); at 14 days, the expression of alkaline phosphatase and collagen type I was significantly higher in the combined group than the PRP and naringin groups (P < 0.05). To conclude, PRP combined with naringin can promote the proliferation of hBMSCs and induce the osteogenic differentiation of hBMSCs. Moreover, there is a synergistic effect between PRP and naringin.

85 mL/min),CL=6.0?(WT/60)~(0.52).④The increased volume of peripheral distribution (V_2) was observed when norvancomycin was co-administered with diuretics;④Reduced drug clearance,prolonged t_(1/2),and increased values of AUC_(24) were found in elderly patients.Conclusions Renal function impairment and age have significant impact on PK parameters of norvancomycin.Dosing regimens of norvancomycin were finally established for different patients on the basis of important PPK parameters generated from different groups of patients.

OBJECTIVETo explore the active ingredients in the Chinese yellow wine could inhibit the proliferation and migration of rat vascular smooth muscle cells induced by homocysteine (Hcy).

METHODSThe primary culture and identification of rat vascular smooth muscle cells (VSMCs) was conducted, and the VSMCs in passage 4-7 were used in the following experiments. The VSMCs were divided into 7 groups: control, Hcy (1 mmol/L), Hcy + oligosaccharide, Hcy + polypeptides, Hcy + polyphenols, Hcy + alcohol, Hcy + Chinese yellow wine and were given the corresponding treatment. The proliferation of VSMCs was determined by MTT. Transwell chambers and would healing were employed to test the migratory ability of VSMCs. Wester blot and gelatin zymography were used to investigate the expressions and activities of metal matrix proteinase 2/9 (MMP-2/9) and tissue inhibitor of metalloproteinase 2 (TIMP-2) in VSMCs of each group.

RESULTSCompared with control group, the proliferation, migration and the expression and activity of MMP-2/9 of VSMCs were significantly increased in the VSMCs of Hcy group (P < 0.01). Compared with Hcy group, the proliferation, migration and the expression and activity of MMP-2/9 of VSMCs were significantly decreases in the VSMCs of polypeptides group, polyphenols group and Chinese yellow wine group. However, the expression of TIMP-2 among each group had no significant difference.

CONCLUSIONPolypeptides and polyphenols in the Chinese yellow wine could inhibit the proliferation and migration of VSMCs induced by Hcy.

Animals ; Cell Movement ; drug effects ; Cell Proliferation ; drug effects ; Cells, Cultured ; Homocysteine ; Matrix Metalloproteinase 2 ; metabolism ; Matrix Metalloproteinase 9 ; metabolism ; Muscle, Smooth, Vascular ; cytology ; Myocytes, Smooth Muscle ; cytology ; drug effects ; Peptides ; chemistry ; Polyphenols ; chemistry ; Rats ; Tissue Inhibitor of Metalloproteinase-2 ; metabolism ; Wine

The aim of this study was to investigate the effect of the total saponins of Panaxginseng (TSPG) on cells expression of apoptosis-related genes bax and bcl-xl in HL-60 cells and its mechanism inducing apoptosis of HL-60 cells. The morphology of HL-60 cells was observed under normal and fluorescence microscopes; the percentage of apoptotic HL-60 cells was assayed by flow cytometry and the DNA ladder was observed by DNA agarose gel electrophoresis; the expression changes of bax and bcl-xl mRNAs were detected by RT-PCR after HL-60 cells were treated with TSPG at final concentrations of 0, 100, 200, 400, 800 and 1600 microg/ml for 48 hours. The results showed that the percentage of apoptotic HL-60 cells went up as the dose increased, the typical apoptotic cell morphology and the appearance of apoptotic DNA ladder could be observed when treated with 0 - 400 microg/ml TSPG for 48 hours. At the same time and same range of concentration, the expression of bax mRNA increased and the bcl-xl expression decreased gradually. When higher than 400 microg/ml of TSPG was used, cell necrosis appeared and the percentage of apoptotic HL-60 cells even decreased. It is concluded that the apoptosis or necrosis in HL-60 cells can be induced by TSPG at certain range of concentration, and the percentage of apoptosis is dose-dependent. The effect on up-regulation of bax mRNA and down-regulation of bcl-xl mRNA probably play an important role in apoptosis of HL-60 cells induced by TSPG.
Apoptosis ; drug effects ; HL-60 Cells ; Humans ; Panax ; chemistry ; RNA, Messenger ; genetics ; metabolism ; Saponins ; pharmacology ; bcl-2-Associated X Protein ; genetics ; metabolism

OBJECTIVETo investigate the expression of Oct4, Sox2, Nanog, SMO, beta-Catenin and Wnt5b mRNA in four hepatocellular carcinoma cell lines of SMMC-7721, Bel-7402, HepG2, MHCC-97 and normal hepatocellular cell line of L02, and to compare the response of these cell lines to all-trans retinoic acid.

METHODSRT-PCR was used to detect expression of Oct4, Sox2, Nanog, SMO, beta-Catenin and Wnt5b mRNA in four hepatocellular carcinoma cell lines and normal hepatocellular cell line. Real time-PCR was used to quantify the expression of the genes.

RESULTSThere are different levels of expression of the stem cell-related gene in hepatocellular carcinoma cell lines and control cell line (P less than 0.05). There are significant differences in HepG2 and L-02 for the response to all-trans retinoic acid (P less than 0.05).

CONCLUSIONSThe stem cell-related genes are differentially expressed in different hepatocellular carcinoma cell lines.

Carcinoma, Hepatocellular ; metabolism ; pathology ; DNA Methylation ; Gene Expression Regulation, Neoplastic ; Hep G2 Cells ; Homeodomain Proteins ; genetics ; metabolism ; Humans ; Liver Neoplasms ; metabolism ; pathology ; Nanog Homeobox Protein ; Octamer Transcription Factor-3 ; genetics ; metabolism ; RNA, Messenger ; genetics ; metabolism ; Receptors, G-Protein-Coupled ; genetics ; metabolism ; Reverse Transcriptase Polymerase Chain Reaction ; methods ; SOXB1 Transcription Factors ; genetics ; metabolism ; Signal Transduction ; Smoothened Receptor ; Stem Cells ; drug effects ; metabolism ; Tretinoin ; pharmacology ; Wnt Proteins ; genetics ; metabolism ; beta Catenin ; genetics ; metabolism

Objective To look into the current distribution of iodine deficiency area in Shandong province and to guide the re-defined iodine deficiency area and to supplement iodine scientifically. Methods In 2008, 100 iodine deficiency counties(cities, districts), designated in Shandong province's "to supplement iodized salt to eliminate the hazard of iodine deficiency management regulations", were selected in the study. One to three samples were collected from water source which was used by the majority of local residents in the 100 iodine deficiency places and iodine concentration was tested by As3+-Ce4+ catalyzing spectrophotometry. Results A total of 65 716 water samples were collected. Sample recovery efficiency reached 99.8%(65 572/65 716). The median water iodine was 5.57 μg/L, with 82.05%( 1097/1337 ) of the township(town) met criteria for the classification of iodine deficiency areas(water iodine ＜ 10 μg/L), 17.43%(233/1337) of the township (town) water iodine moderate(water iodine 10 - 150 μg/L), and 0.52%(7/1337)of the township(town) should be defined high iodine areas(water iodine ＞ 150 - 300 μg/L). Conclusions The iodine deficiency areas should be redefined because water iodine concentrations of iodine deficiency areas have changed. We suggest that the smallest place to supply salt with different range of iodine content is set to the township(town).

Nine compounds were isolated from an ethanol extract of the roots of K. roxburghii by using a combination of various chromatographic techniques including column chromatography over silica gel, MCI gel, Sephadex LH-20, and reversed-phase HPLC. On the basis of physical-chemical properties and spectroscopic data analysis, their structures were identified as munjistin (1), 1-methoxy-3,6-dihydroxy-2-hydroxymethyl-9,10-anthraquinone (2), 1,2,3-trihydroxy-9,10-anthraquinone (3), arjunolic acid (4), hyptatic acid-A (5), hyptatic acid-B (6), 2α,3β,24-trihydroxyurs-12-en-28-oic acid (7), 2α,3β,23-trihydroxyurs-12-en-28-oic acid (8), and daucosterol (9). Compounds 1-9 were obtained from this genus for the first time.
Anthraquinones ; chemistry ; isolation & purification ; Rubiaceae ; chemistry ; Triterpenes ; chemistry ; isolation & purification