Objective To investigate the impact of sphingosine kinase 1 (SPK1) modified adipose tissue-derived stromal cells(ADSC)on tissue engineered bone osteogenesis.Methods ADSC cells isolated from SD rat fat cells were divided into CON group and SPK1 group,and then the cells were respectively infected with 10 MOI CON and SPK1 lentivirus for 48 h.The infection efficiency was confirmed by using flow cytometry.Alizarin red and oil red O was used to stain the cells 14 days after ADSC infection,and osteogenic and adipogenic ability was evaluated by detecting A595nm and A490 nm.In the meantime,the activity change of alkaline phosphatase(ALP)was detected.The SD rat femoral defect model was created,and then after combining ADSC with β-TCP,the tissue engineered bone was pressed to the defect site.The repairment of bone defect was detected by X-ray in 4,6 weeks.After infection of CON and SPK1 virus,bone morphogenetic protein(BMP7)expression in ADSC of these two groups was detected.Results The infection efficiency of CON and SPK1 lentivirus was 94.4％ vs.94.9％ respectively by flow cytometry.The SPK1 protein expression level in CON group and SPK1 group was (0.73±0.10) vs.(1.29±0.17)(P＜0.05).The A value of CON and SPK1 group at 595 nm was (0.20±0.02) vs.(0.41±0.01) (P＜0.05),respectively.The A value of CON and SPK1 group at 490 nm was (0.72±0.01) vs.(0.51±0.02)(P＜0.05),respectively.The expression level of ALP in CON and SPK1 group was (1.42±-0.09) vs.(2.68±0.09) (P＜0.01),respectively.In the repairment of bone defect,high density tissue at rat bone defect was significantly larger in SPK1 group than in CON group in 4 weeks,and in 6 weeks,bone defect of SPK1 group was healed,but CON group still had defect.The expression level of BMP7 in CON and SPK1 group was (1.13±0.16) vs.(4.46±0.23)(P＜0.05),respectively,48 h after infection.Conclusion SPK1 modified ADSC has an enhanced osteogenesis ability in vitro and in vivo,which was related to the activation of BMP7.

The author found a lot application of traditional Chinese kernel medicine in hairdressing formulae from book of Waitai Miyao Fang, and thus made an exploration on it.

Outwardly rectifying swelling-activated chloride conductance (ICl,Swell) in rabbit heart plays a critical role in cardioprotection following ischemic preconditioning (IP). But the functional characterization and molecular basis of this chloride conductance in rabbit heart ventricular myocytes is not clear. Candidate chloride channel clones (e.g. ClC-2, ClC-3, ClC-4 and ClC-5) were determined using RT-PCR and Western blot analysis. Whole cell ICl,Swell was recorded from isolated rabbit ventricular myocytes using patch clamp techniques during hypo-osmotic stress. The inhibitory effects of 4,4' isothiocyanato-2,2-disulfonic acid (DIDS), 5-nitro-2(3-phenylroylamino) benzoic acid (NPPB) and indanyloxyacetic acid 94 (IAA-94) on ICl,Swell were examined. The expected size of PCR products for ClC-2, ClC-3 and ClC-4 but not for ClC-5 was obtained. ClC-2 and ClC-3 expression was confirmed by automated fluorescent DNA sequencing. RT-PCR and Western blot showed that ClC-4 was expressed in abundance and ClC-2 was expressed at somewhat lower levels. The biological and pharmacological properties of I(Cl,Swell), including outward rectification, activation due to cell volume change, sensitivity to DIDS, IAA-94 and NPPB were identical to those known properties of ICl,Swell in exogenously expressed systems and other mammals hearts. It was concluded that ClC-3 or ClC-4 might be responsible for the outwardly rectifying part of ICl,Swell and may be the molecular targets of cardioprotection associated with ischemic preconditioning or hypo-osmotic shock.
Biophysics/methods ; Chlorides/*chemistry ; Chlorides/metabolism ; DNA Primers/chemistry ; Electrophysiology/methods ; Gene Expression Regulation ; Glycolates/pharmacology ; Heart Ventricles/*cytology ; Ischemic Preconditioning ; Muscle Cells/*cytology ; Osmosis ; Sequence Analysis, DNA

Outwardly rectifying swelling-activated chloride conductance (lCl,Swell) in rabbit heart plays a critical role in cardioprotection following ischemic preconditioning (IP). But the functional characterization and molecular basis of this chloride conductance in rabbit heart ventricular myoeytes is not clear. Candidate chloride channel clones (e.g. ClC-2, ClC-3, CIC-4 and CIC-5) were deter- mined using RT-PCR and Western blot analysis.Whole cell ICl,Swell was recorded from isolated rabbit ventricular myoeytes using patch clamp techniques during hypo-osmotic stress. The inhibitory effects of 4,4′ isothiocyanato-2,2-disulfonic acid (DIDS), 5-nitro-2(3-phenylroylamino) benzoic acid (NPPB) and indanyloxyacetic acid 94 (IAA-94) on ICl,Swell were examined. The expected size of PCR products for ClC-2, ClC-3 and ClC-4 but not for ClC-5 was obtained. ClC-2 and ClC-3 expression was con- firmed by automated fluorescent DNA sequencing. RT-PCR and Western blot showed that ClC-4 was expressed in abundance and ClC-2 was expressed at somewhat lower levels. The biological and pharmacological properties of ICl,Swell including outward rectification, activation due to cell volume change, sensitivity to DIDS, IAA-94 and NPPB were identical to those known properties of ICl,Swell in exogenously expressed systems and other mammals hearts. It was concluded that ClC-3 or ClC-4 might be responsible for the outwardly rectifying part of ICl,Swell and may be the molecular targets of cardioprotection associated with ischemic preconditioning or hypo-osmotic shock.

Objective To investigate G. Pentaphyllums influence on the activity of glutathione peroxidase (GSH-PX) and catalase (CAT) in the skin of hireless photoaging mice, as well as the content of hydroxyproline (HYP). At the same time, G. Pentaphyllum's effect on the hireless photoaging mice was studied. Methods Healthy KM hireless mice were randomly divided into five groups. A skin photoaging model was established by G. Pentaphyllum administration. The changes of the activity of GSH-PX, CAT and the contents of dermal hydroxyproline in the skin were then measured by biochemical methods in each group of the experiment. Results In the model group, the activity of GSHPX, CAT and the content of HYP of skin were all decreased significantly (P＜0. 05). And there were different degrees of improvements in those of the herb given groups. Conclusion G. Pentaphyllumhas the protective effect on the skin of the photoageing in the hairless mice. The mechanism may be that G. Pentaphyllum could inhibit the oxidative damages of ultraviolet and skin photoaging by increasing the synthesis of collagen in skin.

Objective To investigate the relationship of parity and other reproduction-associated factors with metabolic syndrome(MS) in middle-aged and elderly women in Nanchang community.Methods Female permanent residents over 40 years old were sampled for a routine examination and a questionnaire survey covering basic information,5 894 subjects were enrolled and identified as effective cases.MS was diagnosed according to the standard of China Diabetes Society in 2004.Factors including age,education,profession,marital status,parity,child-bearing history of macrosomia,breastfeeding,menarche age,and menopausal age were analyzed in order to find their relationship with MS.The univariate logistic analysis was followed by binary logistic regression analysis if P＜0.05,and OR value and confidence interval were calculated.Results Univariate logistic regression analysis showed that age,education,profession,parity,breastfeeding,and menopausal age were influencing factors of MS (all P ＜ 0.05).There was no correlation to marital status,miscarriage history,child-bearing history of macrosomia,menarche age with MS(all P＞0.05).Binary Logistic regression analysis showed that the risk of MS increased with age:OR =1.51 (95 ％ CI 0.98-2.32) during 50-59 years,OR =2.10 (95 ％ CI 1.34-3.30) during 60-69 years,and OR =2.63 (95 ％ CI 1.61-4.31) in cases aged over 70 years,as compared to the group aged 40-49 years.The risk in non-manual workers increased about 34 percent OR =1.33 (95 ％ CI 1.04-1.70),compared with manual workers.The risk of MS increased with parity,being OR =1.46 (95％ CI 1.14-1.88),OR =1.78 (95％ CI 1.30-2.43),and OR =1.84 (95％ CI 1.24-2.72),with 2,3,and 4 child-bearings respectively as compared to cases with only one childbearing.The risk of MS was reduced with advancing menopausal age being about 6 percent reduction with each increased year of menopausal age(OR =0.94,95％ CI 0.90-0.99).There was no difference between education,breastfeeding and MS(P＞005).Conclusion Multiple parity,earlier menopausal age,less manual work,and aging seem to be the risk factors of MS in women.

In teaching of Microbiology, we introduced microbiological history and research experiences of scientists. Students had more interesting in learning and got some ideas of science research. Eighty percent of them got good points.

Objective To compare and analyze the surgical and non-surgical treatment results of hypertensive cerebrat hemorrhage.Methods 29 vases of hypertensive cerebral hemorrhage patients are randomly divided into two groups:13 cases were treated by surgical treatment,and 16 cases were treated by medicine treatment.Results In surgical group,dead 3 cases,plant survival 5 eases,death disablity rate is 62%;and in non-surgical group:dead 1 case,plant survival 5 eases,death disablity rate is 44%.Conclusion There is no significant difierence between surgical and non-surgical treatment of hypertensive cerebral hemorrhage.It should be thought more to use surgical treatment on hypertensive cerebral hemorrhage.

Objective:To study the surface structure and antibacterial property of Ag-containing coating(AgCC)on casting cobalt chromium alloy(Co-Cr).Methods:Plasma spraying technique was adopted to prepare AgCC on Co-Cr.Scanning electron microsco-py,energy dispersive analysis and X-ray diffraction analysis were used to evaluate the surface properties.The antibacterial effects of AgCC against staphylococcus aureus and candida albicans were examined by film attachment method.Fluorescence microscope was a-dopted to evaluate the bacteria adhesion property.Results:AgCC surface was uniform and compact,combined perfectly with sub-strate material.The content of the surface was mainly Ag,Cr and a small amount of Ag2 O and Cr2 O3 .The results of antibacterial as-say showed that on AgCC the number of bacterial colony was fewer(P<0.05)and bacterial adhesion was less than those on Co-Cr(P<0.05).Conclusion:AgCC surface was stable and has antibacterial property.

Objective To observe the effects of stromal cell-derived-factor-1(SDF-1) on the function of endotheli?al progenitor cells(EPCs)of peripheral blood in patients with diabetes, and to discuss the effects of PI3K/AKT signaling path?way on the role of SDF-1 in EPCs. Methods The peripheral blood samples (30 mL) were collected in 10 diabetes patients (DM group) and 10 healthy controls (HC group). (1) The 100μg/L SDF-1 was added in intervention group. EGM-2MV was added in non-intervention group. The Boyden chamber and in vitro angiogenesis kit were used to analyze the migration and in vitro angiogenesis of EPCs. (2) Cultured EPCs were divided into blank control group, 1μg/L SDF-1 group, 10μg/L SDF-1 group, 100μg/L SDF-1 group, pure AMD3100 group and 100μg/L SDF-1+AMD3100 group. AKT protein expression lev?els of endothelial progenitor cells were detected by Western blot assay in each group. Results (1) Without intervention with SDF-1, EPCs’migration and angiogenesis ability were lower in DM group than those in HC group. After intervention with SDF-1, the migration and angiogenesis ability were enhanced in two groups, but the increased level was higher in DM group than that of HC group. (2) Under the same concentration, AKT protein expression level was significantly lower in DM group than that in HC group (P<0.01). AKT protein expression levels were increased with the increased levels of SDF-1 in DM group and HC group (P<0.05). AKT protein expression was significantly lower in 100μg/L SDF-1+AMD3100 group than that of 100μg/L SDF-1 group (P<0.05). Conclusion SDF-1 can increase the chemotactic migration and angiogenesis ability of EPCs in peripheral blood, especially for patients with diabetes. The effects of SDF-1 on EPCs were related to the PI3K/AKT signaling pathway.