Adolescent ; Adult ; Busulfan ; therapeutic use ; Female ; Hematopoietic Stem Cell Transplantation ; methods ; Humans ; Male ; Middle Aged ; Transplantation Conditioning ; methods ; Young Adult

The present study reported that 5srRNA from reticulocytes of rabbit could pass into the nucleus of mouse myeloma cells SP2/0,and in the mean time DNA synthesis and cells division were markedly suppressed. In a separate experiment, the rRNA was extracted from embryonic liver and erythrocytes of rabbit or rat and analysed by agarose electrophoresis method. The result indicated that the amount of 5srRNA in various period of the development of erythrocyte is changed along with denucleation process. Thus it is likely that 5srRNA of mammalian erythrocyte plays a role in reversing malignant phenotype of tumor cells and promoting denucleation of mammalian erythrocyte through inhibiting DNA synthesis.

Abnormalities, Multiple ; Child, Preschool ; Face ; abnormalities ; Hematologic Diseases ; Humans ; Male ; Vestibular Diseases

Aged ; Carcinoid Tumor ; diagnosis ; therapy ; Humans ; Laryngeal Neoplasms ; diagnosis ; therapy ; Male

Objective To study the effect of 2?-(3-hydroxypropoxy)-Calcitriol (ED-71) on the cell growth and differentiation of human osteoblast-like cell line OS-732. Methods Osteoblast-like cells were cultured with various concentration of ED-71.The effects of ED-71 on proliferation and differentiation were detected by (MTT), alkaline phosphatase activity and level of osteocalcin (bone gla protein,BGP). Results The proliferation rate of osteoblast-like cells cultured for 4 days was significantly inhibited by 10~ -7mol/L concentration of ED-71. ED-71 in 10~ -8, 10~ -9mol/L concentration can significantly increase BGP level, but ED-71 in 10~ -7mol/L concentration may decrease BGP level.Alkaline phosphatase activity compared with control was not changed significantly. Conclusions ED-71 can inhibit cell growth in high concentration and improve cell differentiation in lower concentration.

Objective To study the relationship between serum 1,25 -dihydroxy vitamin D3 level and inflammatory factor in elderly primary hypertension patients.Methods Sixty -eight primary hypertension patients were selected as hypertension group,and 60 healthy subjects were selected as control group in this study.The serum 1,25 -dihydroxy vitamin D3 level and plasma inflammatory factor were measured and compared.Results The serum 1,25 -dihydroxy vitamin D3 level in the hypertension group was significantly lower,while plasma inflammatory factor in the hypertension group was significantly higher than in the control group(t =6.445,7.326,8.174,8.556,all P <0.01).Pearson correlation analysis showed that the serum 1,25 -dihydroxy vitamin D3 level was negatively related with systolic blood pressure,plasma diastolic blood pressure and inflammatory factor (r =-0.425, -0.367, -0.254, -0.263, -0.296,all P <0.05).Logistic repression analysis revealed that the inflammatory factor was a risk factor for hypertension,while the 1,25 -dihydroxy vitamin D3 level was a protecting factor for primary hypertension. Conclusion The serum 1,25 -dihydroxy vitamin D3 level is significantly lower in elderly primary hypertension patients than in healthy subjects.The serum 1,25 -dihydroxy vitamin D3 level and the inflammatory factor are predic-tive factors for hypertension.

Adult ; Factor XIII ; antagonists & inhibitors ; Factor XIII Deficiency ; complications ; etiology ; Female ; Humans ; Sjogren's Syndrome ; complications

OBJECTIVETo explore the relationship between salivary proteome and dental caries and to promote the biomarker studies of dental caries susceptibility by comparing the salivary proteome of caries-active children and caries-free children with electrospray ionization ion-trap tandem mass spectrometry (ESI-MS/MS).

METHODSTen caries-active children and ten caries-free children were sampled. The salivary proteome of the two groups was studied, and the differential protein between the two groups was analyzed by ESI-MS/MS after sodium dodecyl sulfate polyacrylamide gel electrophoresis, filter-aided sample preparation, and liquid chromatography.

RESULTSThe concentration of salivary protein was higher in the caries-active group than in the caries-free group. The polypeptide counts of thecaries-active and caries-free groups were 602 and 481, which belonged to 286 and 227 proteins, respectively. The differential polypeptide count of the two groups was 361, and the differential protein count was 118. The detected proteins included matrix metalloproteinase-9 (MMP9), mucin-7 (MUC7), lactotransferrin (LTF), carbonic anhydrase 6 (CA6), azurocidin (AZU), and cold agglutinin.

CONCLUSIONThe total salivary protein was higher in the caries-active group than in the caries-free group. The preliminary detection of differential proteins (MMP9, MUC7, LTF, CA6, AZU, and cold agglutinin) may lay some foundation for biomarker research of dental caries susceptibility.

Carbonic Anhydrases ; Child ; Dental Caries ; Humans ; Matrix Metalloproteinase 9 ; Proteome ; Saliva ; chemistry ; Spectrometry, Mass, Electrospray Ionization ; Tandem Mass Spectrometry

Objective To study the effects of high matrix metalloproteinase 9 (MMP 9 ) on the biological behaviors of fibroblasts,in order to clarify the possible mechanisms in the wound healing of diabetic foot.Methods Establish the cell model of skin fibroblast with high expression of MMP 9 by high glucose (22.0 mmol/L) and high homocysteine (100 μmol/L) co-culture.Control group was incubated with normal glucose (5.5 mmol/L).Realtime PCR,ELISA and gelatin zymography were used to detect the MMP 9 mRNA,protein expression and activity of MMP 9.Flow cytometry,CCK-8,ELISA assay,scratch test and transwell were used to detect cell proliferation,viability,collagen (hydroxyproline) secretion,horizontal migration and vertical migration of cells.Results Data were expressed as (x- ± s).Differences were considered significant if their P value was ＜ 0.05.Results The expression of MMP 9 mRNA,protein levels and the activity of MMP 9 in high MMP 9 group were 6.05 folds,4.12 folds and 1.58 folds higher than those in control group (P ＜ 0.01,respectively).The proportion of S phase cells,proliferation index,cell viability,collagen (hydroxyproline) secretion,6 h horizontal migration rate and the number of vertical migration cells in high MMP9 group decreased by 29.8 ％,18.1％,23.3 ％,68.7 ％,45.0 ％ and 21.4 ％ than those in control group (P ＜ 0.01,respectively ). Conclusions Fibroblast with high expression of MMP 9 have decreased proliferation,activity,collagen secretion and reduced migration,which suggests that MMP 9 may inhibit the biological behaviors of fibroblasts.

ObjectiveTo investigate the plasma endothelin(ET),angiotensin (Ang) Ⅱ levels on middle cerebral artery resistance in hypertension patients.MethodsThe plasma ET and Ang Ⅱ levels were determined in hypertension grade 1 (grade 1 group,40 cases),grade 2 (grade 2 group,40 cases ),grade 3(grade 3 group,40 cases) and healthy adults (control group,50 cases).The systolic velocity and pulsatility index of middle cerebral artery were determined by transcranial Doppler,and 24 h ambulatory blood pressure was monitored.ResultsThe pulsatility index in grade 2 group and grade 3 group was higher than that in control group and grade 1 group (1.23 ±0.22,1.31 ±0.21 vs.0.76 ±0.18,0.78 +0.13)(P＜0.05).The systolic velocity in grade 2 group was higher than that in control group,grade 1 group and grade 3 group [(87.8 ± 11.7) cm/s vs.(60.8 ± 10.6),(63.8 ± 11.8),(49.9 ± 10.8) cm/s](P ＜ 0.05),and in grade 3 group was lower than that in control group,grade 1 group and grade 2 group(P ＜ 0.05 ).The plasma ET,Ang Ⅱ in grade 1,2,3 group was higher than that in control group[(46.83 ± 8.83 ),(55.63 ± 10.28 ),(67.19 ± 10.73)ng/L vs.( 38.94 ± 7.83 ) ng/L and ( 50.23 ± 9.23 ),(64.34 ± 12.23 ),( 79.83 ± 13.43 ) ng/L vs.(41.63 ± 8.76 )ng/L] (P ＜0.05).A increasing trend in the plasma ET and Ang Ⅱ was present with increasing the hypertension grade(P ＜ 0.05 ).The night average systolic pressure,night average diastolic pressure and plasma ET,Ang Ⅱ levels in dipper hypertension patients (60 cases) were lower than those in non-dipper hypertension patients(60 cases) [(121.83 ± 11.83) mm Hg(1 mm Hg =0.133 kPa) vs.(138.84 ± 13.29)mm Hg,(77.23 ± 8.54) mm Hg vs.(86.93 ± 10.34) mm Hg,(48.83 ± 10.14) ng/L vs.(59.83 ± 11.29)ng/L,(55.84 ± 10.83 ) ng/L vs.(72.83 ± 20.29) ng/L,P ＜ 0.05].ConclusionMonitoring plasma ET,Ang Ⅱ levels and ambulatory blood pressure in hypertension patients is helpful in using medicine to improve endothelial function and to promote its dynamic type into a dipper blood pressure in the treatment of patients,thereby to reduce the incidence of hypertension adverse events.