Objective To study the effect of plasminogen activator inhibitor type-1 ( PAI-1 ) on the protein expression of transforming growth factor-beta 1 ( TGFβ1 ), hyaluronic acid ( HA ) and tissue inhibitor of metalloproteinase-1 (TIMP-1) of hepatic stellate cells(HSC). Methods Methyl thiazolyl tetrazolium (MTT)was performed to detect the effect of PAI-1 on the proliferation of LX-2 ,and to determine the perfect intervention concentration of PAI-1. After incubation with PAI-1 in LX-2 culture solution for 12 h,24 h,48 h,the protein expression of TGFβ1 ,TIMP-1 and HA was observed with enzyme linked immunosorbent assay (ELISA). Results A492 in the negative control was 0. 473 ± 0. 353, and 1. 249 ± 0. 440, 1. 636 ± 0. 315,1.283 ± 0. 413,0. 938 ±0. 263 and 0. 303 ±0. 125 when the concentration of PAI-1 was 5,10,20,40 and 80 μg/L,respectively,a concentration of 10 μg/L of PAI-1 showed the strongest stimulation remarkablely ( F = 11. 697, P ＜ 0. 01 ).After incubation with PAI-1 for 12 h,24 h,48 h,the protein expression of HA,TGFβ1 and TIMP-1 in the LX-2 supernatant significantly increased compared to negative control (F = 1566. 752,235. 632 and 67. 359,respectively,P ＜ 0. 01 or ＜ 0. 05 ). Conclusion PAI-1 may influence the development of hepatic fibrosis through promoting the protein expression of HA ,TGFβ1 and TIMP-1 of HSC.

Objective To investigate the possible risk factors for lead poisoning in order to prevent the lead poisoning in children.Methods One thousand and fifty-five children aged 5 months to 16 years who were outpatients in Beijing children′s hospital were chosen. Blood lead was analyzed by 3010-B lead analyzer for each child.Also the risk factors were recorded by using a standardized questionnaire.Results The mean level of blood lead was(110.1?41.9) ?g/L with the occurrence of lead poisoning (blood lead ≥100 ?g/L) at 43.51%.No difference were found in blood lead level among different age groups.Several environmental and social factors were found to be related to lead poisoning in children,such as non-balanced diet,rarely hand washing,frequent eating crisp foods,not frequency of calcium and zinc supplementation and frequency of room decoration.Conclusion Unhealthy dietary and life styles contribute to lead poisoning in children.

Objective To investigate the effect of Montelukast Combined with Symbicort in severe asthma treatment and intervention. Methods The treatment according to different interventions will be January 2015 to January 2017 in our hospital 80 cases of severe asthma groups:control group with routine nursing intervention for a letter form treatment, the observation group with high quality nursing the intervention of montelukast Symbicort treatment; detailed records of patients in the two groups of experimental data, and the data for comparative analysis, to explore the combination of montelukast and Symbicort in severe asthma treatment and intervention effect. Results The high quality nursing intervention meng montelukast Symbicort (observation group) for the treatment of severe clinical the effect of nursing intervention in patients with asthma is better than conventional Symbicort (control group) clinical efficacy, clinical symptoms improved better than the control group, nursing satisfaction was higher than the control group, the difference was statistically significant (P< 0.05). Conclusion The high quality nursing intervention of patients with severe asthma montelukast Symbicort treatment effect significantly, can effectively improve the clinical symptoms of patients, nursing satisfaction is high, it is widely used in clinical treatment of patients with severe asthma intervention.

Objective To investigate the differences between prenatal and postnatal ultrasound findings in isolated ventricular septal defects.Methods Totally 244 cases of isolated ventricular septal defect were retrospectively analyzed and followed in one year after birth.All fetus were divided into the correct group and the error group according to the postnatal results.The size and type of ventricular septal defect and ventricular shunt were assessed and analyzed statistically.Results In all of the 244 cases,correct group included 181 cases and error group included 63 cases.There was no significant difference in the type of defects between two groups (P=0.061);there were significant differences in the size of postpartum defect and the velocity of ventricular shunt between the two groups (both P＜0.05),and no significant difference of the direction of shunt between two groups (P=0.408);there were significant differences in the size of defects between the prenatal and postnatal in correct groups (P＜0.05),but the direction of shunt had no significant difference (P=0.087).Conclusion There is certain detection rate in prenatal diagnosis of isolated ventricular septal defect;anatomical characteristics of defect may affect antenatal examination results.There was significant difference between prenatal and postnatal ultrasound in the same lesion.

The tuberous roots of Aconitum carmichaeli are largely used in traditional Chinese medicine and widely grown in Jiangyou, Sichuan, China. During the growth process, this medicinal plant releases a large amount of allelochemicals into soil, which retard the growth and development of near and late crops. Therefore, a pure culture experiment was thus carried out by seed soaking to study the allelopathic effects of extracts from tuberous roots of A. carmichaeli (ETR) on the seed germination and young seedling growth of Lolium perenne, Trifolium repens, and Medicago sativa, the late pasture grasses after cultivation of A. carmichaeli. The results showed that three pasture grasses varied significantly in seed germination and young seedling growth in response to ETR concentrations. Seed germination of M. sativa was stimulated by low ERT concentration (0.01 x g(-1)), while all of pasture grass seeds germinated poorly in solution with 1.00 g x L(-1). Seed soaking with 1.00 g x L(-1) also inhibited significantly the growth of pasture young seedlings, with M. sativa showing the highest seedling height reduction of 42.05% in seeding height, followed by T. repens (40.21%) and L. perenne with about 11%. Cultivation of L. perenne could thus be beneficial to increase whole land productivity in A. carmichaeli-pasture grass cropping systems. In addition, hydrolysis of protein, starch, and inositol phosphates was blocked and free amino acids, soluble sugars and phosphorus were decreased in seeds by seed soaking with ETR, which could be one of the reason for the inhibition of seed germination. There was a significant reduction in root vigor, nitrate reductase, and chlorophyll after the seed treatment with ETR, indicating the suppression of nutrient uptake, nitrate assimilation, and photosynthesis by allelopathic chemicals in ETR, which could lead to the slow growth rate of pasture grass seedlings.
Aconitum ; chemistry ; metabolism ; Allelopathy ; China ; Pheromones ; metabolism ; pharmacology ; Plant Extracts ; metabolism ; pharmacology ; Plant Roots ; chemistry ; metabolism ; Poaceae ; drug effects ; growth & development

protrusion measured by ultrasound for diagnosing bladder outlet obstruction.Methods A literature search of medline (1966.1-2011.6),embase(1984.1-2011.6),CNKI (1994.1-2011.6) and WEIPU Data (1989.1-2011.6) from 1999 to 2009 was performed by two reviewers independently.QUADAS items was applicated to assess trial quality.Golden standard was BOOI measured by urodynamics (BOOI more than 40 indicates bladder outlet obstruction).Heterogenous studies and meta-analysis were conducted by Meta-Disc 1.4 software.Results Totally 6 studies was included at last,involving 682 subjects.No threshold effect was found,but there was heterogeneity due to other factors.The meta-analysis showed that the sensitivity was 70.8 ％,specificity was 87.6 ％,positive LR was 5.132,negative LR was 0.303,the diagnostic OR was 22.18,the area under SROC curve was 0.8723 and Q index was 0.8028.Conclusions Intravesical prostatic protrusion measured by ultrasound is a good index for diagnosing bladder outlet obstruction in patients with benign prostate hyperplasia when intravesical prostatic protrusion is equal or more than 10mm.

Objective To investigate the effects of transforming growth factorβ1(TGFβ1)and β3 (TGFβ3)gene transfer on MMP-2,MMP-9 and TIMP-1 expression in hepatic stellate cells(HSC-T6).Methods TGFβ1 and TGFβ3 expression plagmids were constructed.The recombinant expression plasmid pcDNA3.1(+)-=TGFβ1 and pcDNA3.1(+).TGFβ3 were transfected or cotransfected into HSC-T6.At 24,48 and 72 h after transfection,the expression of MMP-2,MMP-9 and TIMP-1 mRNA were detected by real-time quantitative PCR,and the expression of MMP-2,MMP-9 and TIMP-1 protein were detected by Western blot.The recombinant expression plasmid pcDNA3.1(+).TGFβ1 was transfected into HSC-T6,and positive clones were selected by G418.The positive clones were transfected by the recombinant expression plasmid pcDNA3.1(+).TGFβ1,and the expression of MMP-2,MMP-9 and TIMP-1 were detected at 48 h after transfection.Results After transfection with peDNA3.1-TGFβ1,MMP-2 and TIMP-1 increaged remarkably in HSC-T6 cells(P＜0.05),but MMP-9 remained at the sanle level;After transfection with pcDNA3.1-TGFβ3,expression levels of MMP-2,MMP-9 and TIMP-1 mRNA were not changed,but TIMP-1 protein increased remarkably(P＜0.05);in cotransfection group,the expression of MMP-2 was higher than that in the blank and the control groups(P＜0.05),but MMP-9 level was not changed and TIMP-1was decreased compared with that in the TGF-β1 transfection group(P＜0.05).After TGFβ3was transfected into positive clones,the change of MMP-2 wag not significant(P＞0.05).but MMP-9 increaged and TIMP-1 decreased significantly at 48 h after transfection(P＜0.05).Conclusions TGFB3 may inhibit liver fibrosis by increase the activity of MMP-2 and MMP-9,and decrease the activity of TIMP-1.

Objective To develop a PCR-ELISA assay for the rapid, specific and sensitive detec-tion of human seasonal influenza virus ( H1, H3 and B) by using molecular biological and immunological methods in combination.Methods The primers were designed according to the genes encoding the matrix protein ( M) , the H1 and H3 hemagglutinin ( HA) of influenza A virus and the nonstructural proteins ( B-NS) of influenza B virus and then were labeled with biotin.The PCR products were detected by ELISA by use of an internal catching probe labeled with DIG.Results The minimum copy numbers of genes encoding the M, H1, H3 and B-NS proteins detected by the established assay were 1.43?103 , 8.67?102 , 3.86?103 and 5.45?103 copies/μl, respectively, which indicated that the PCR-ELISA assay was about 10 times more sensitive than agarose gel electrophoresis in the detection of PCR products.No cross-reactions between the different subtypes of influenza virus or different species of virus were observed.Moreover, a total of 104 clin-ical specimens of influenza virus were examined by the PCR-ELISA assay, the results of which were consist-ent with those of the virus isolation method.Conclusion The newly developed PCR-ELISA assay was a highly sensitive and specific method for the rapid detection and subtyping of influenza virus, suggesting the possibility of using it in laboratory for the surveillance and detection of influenza virus.

Objective To discuss the optimal imaging conditions of spatio-temporal image correlatin (STIC). Methods Conventional 2D fetal echocardiography and 3D STIC volume collection were performed in 130 fetuses. The images obtained using two methods were scored and compared. Results Complete 3D volume collection with the initial view of four chamber view were abtained in 121 fetuses, the successful rate was 93.13%. There was no significant differences in total score between the two methods. Significant difference was found between the score of different condition groups.The highest scores mostly appeared in lateral four chamber heart in both method groups. The highest scores mostly appeared in 25-29 gestational weeks with 2D ultrasound, while 20-24 gestational weeks with 3D ultrasound, scores in long axis views of vessels were statistically different. Conclusion STIC has advantages over conventional ultrasonography, but needs conditions control and analysis skills.

Objective To find an ideal method of DNA isolation from blood and especially from clotted blood and to minimize the volume of blood collected for laboratory and clinical tests.Methods DNAs were isolated from antiagglutinated and agglutinated blood samples from auricular veins of 30 healthy subjects. The DNAs of these samples were obtained by a nonenzymatic, nontoxic procedure optimized by us and determinated by agarose gel electrophoesis and PCR. Results The yields of DNA isolated from clotted blood and antiagglutinated blood were (40.2?8.86)mg DNA/L and (39.1?10.2)mg DNA/L, and purities were 1.87?0.11 and 1.92? 0.12. The DNAs that we isolated from all samples had high molecular weight and by PCR the dimorphism of ALU alleles of the 8th intron of t-PA was easy to be obtained, so they were complete and reliable. Conclusion This method is rapid, easy, efficient and nontoxic for isolation of DNA from clotted and fresh blood and meets requirements for clinical testing and molecular biology study.