Adolescent ; Child ; Child, Preschool ; Female ; Humans ; Infant ; Kidney Neoplasms ; blood ; pathology ; Male ; Neoplasm Metastasis ; Vascular Endothelial Growth Factor A ; blood ; physiology ; Wilms Tumor ; blood ; pathology

Objective To study the connection between vascular endothelial growth factor(VEGF) and pool prognosis in nephroblastoma.Methods Serum VEGF was measured with immuneohistochemical(ELISA) methods in 35 children of nephroblastoma at preope-ration,1 week,2 weeks after surgery respectively. Simple visiting happened after surgery 4,8,16,32 weeks.The countrol group was 35 healthy children. Result Before surgery,the median VEGF in the children was (89.47?22.45) ?g/L.After surgery 1 week,2 weeks,levels in the children fell significantly to (2.75?0.31) ?g/L,(1.52?0.18) ?g/L.There was a significant difference compared with preoperation ( t =4.125 P

Aim To investigate the mechanism of dia-betes changing the hepatic CYP1 A2 through in vitro cell culture study.Methods The function of CYP1 A2 in HepG2 and Fa2N-4 cells were evaluated by determi-ning the level of phenacetin metabolism,and the mR-NA expression of CYP1 A2 in cells was detected by real time PCR.HepG2 cells were co-cultured with serum of diabetic rats(type 1 and type 2)and normal rats,then the CYP1 A2 function in cells were evaluated.Then, the HepG2 and Fa2N-4 cells were co-cultured with a series of concentrations of saturated (including palmitic acid and stearic acid)and unsaturated fatty acids(in-cluding oleic acid and linoleic acid)for 48 h,and the function and expression of CYP1 A2 in the cells were compared.Results It was found that the activities of CYP1 A2 were higher in cells incubated with diabetic serum of both type.All high concentration of fatty acids could increase the function and expression of CYP1 A2 in both HepG2 and Fa2N-4 cells.Conclusion It is speculated that the abnormal level of fatty acids under diabetic state might be part of the reasons why diabetes change the hepatic CYP1 A2,which provides the basis for future study.

Objective:To study the role of activin A in regulation of neutrophil function by detecting activin receptor expression and cellular activities.Methods:Peritoneal neutrophils were isolated in mouse.After the neutrophils were stimulated with activin A,the expression of ActRⅡA on neutrophils was examined by immunofluorescence and flow cytometry.Expression of Smad3 in neutrophils was analyzed by Western blot.Assays of neutrophils function were performed by detecting respiratory burst, production of NO and phagocytosis.Results:The isolated cells were composed of more than 90% peritoneal neutrophils.ActRⅡA was expressed on mouse neutrophils and Gr-1/ActRⅡA double-positive cells were 41.1%.Activin A promoted Smad3 phosphorylation in neutrophils,increased the production of ROS and O2-(P<0.05),enhanced secretion of NO and phagocytosis of mouse neutrophils(P<0.01),and promoted fluorescent microsphere phagocytosis of neutrophils by flow cytometry ( P<0.01 ) .Conclusion: Activin receptor and activin signaling protein were expressed on mouse neutrophils,activin A might play an important regulatory role in activation and function of neutrophils.

Objective:To remove murine embryonic stem cells(mESC)from the differentiating cell culture and purify the differentiated cells by Magnetic Activated Cell Sorting(MACS).Methods:Neural differentiation of mESC was induced by a 5-stage method.The specific cell surface marker,SSEA-1,was used to identify ES cells in the differentiating cells.The optimal dilutions of mouse anti mouse SSEA-1 IgM primary antibody and FITC conjugated goat anti mouse secondary antibody were determined before the flow cytometry test.The incubation time and incubation temperature of primary antibody were all optimized to make the cytometry test accurate.After the optimization,stage 4 cells were dissociated into single cell suspension,incubated with antibody of SSEA-1 and microbeads conjugated goat anti mouse IgM,and then sorted through the magnetic field.The rate of SSEA-1 positive cells in pre-and post-separation groups was assessed by flow cytometry,and the viability of cells was evaluated by trypan blue staining counting under light microscopy.Results:The proportion of SSEA-1 positive cells in the separated cells can be reduced from(7.19?1.36)% to(1.34?0.80)%.The survival rate of sorted cells was more than 92%,similar to that of pre-separation cells.Conclusions:The MACS system we used can effectively remove mESC from the differentiated cells.The sorted cells will be well provided for the subsequent studies about transplantation therapy.

Objective To study and analyze the clinical efficacy of compound preparation Femoston for the treatment of perimenopausal syndrome in women. Methods 60 women with perimenopausal syndrome from April 2016 to July 2017 were selected and randomly divided into the control group and the experimental group, 30 cases for each group. The control group was given estradiol valerate tablets, and the experimental group was treated with compound preparation Femoston, one tablet a day. The treatment time of the two groups was 6 months, and the clinical efficacy of the experimental group and the control group were compared and analyzed. Results After the corresponding treatment, 4 patients were ineffective in the experimental group. In the control group, 7 patients were ineffective, 10 cases were effective, and 13 cases were good effective. The effective rate of the experimental group was 86.67%, which was significantly higher than that (76.67%) of the control group with statistical significance (P<0.05). The level of FSH in the experimental group was (24.10 ± 15.24) U/L, which was significantly better than that of the control group (42.72 ±15.56) U/L with statistical significance (P<0.05). There were no obvious adverse reactions in the two groups, and the rate of adverse reactions such as vomiting, abdominal pain and breast pain were 3.33% and 6.67%, respectively, and there was no statistical significance. Conclusion The clinical efficacy of compound preparation Femoston for treating perimenopausal syndrome is ideal. Femoston could significantly improve the hormone levels in patients with high safety.

Objective To explore protective effect of Heme oxygenase-1(HO-1) on irradiation-induced endothelial cell apoptosis.Methods Human endothelial cell line EA.hy926 were administered with or without HO-1 activator Copp and/or HO-1 inhibitor Znpp,respectively.Then,cells were treated with or without 8 Gy radiation.The HO-1 protein expression of cells were assessed with Western blotting and apoptosis of cells treated with irradiation were evaluated with flow cytometry.Moreover,cytochrome C releasing into cytosol were also determined by Western blotting. Results In PBS+R group,HO-1 protein expression of EA.hy926 was low posterior to irradiation.When cells were preconditioned with Copp and/or Znpp,then recieved with 8Gy irradiation,the HO-1 protein expression of EA.hy926 increased significantly in comparision with the PBS+R group(P

Objective To investigate the clinical characteristics of 40 patients with ocular toxocariasis (OT) on the first attendance.Methods A total of 40 consecutive patients who were clinically and serologically diagnosed with OT were retrospectively reviewed.Results The mean age of patients was (12.12±10.42) years.There were 29 males and 11 females.29 cases presented with decreased vision,4 children with leukocoria,2 cases with strabismus and 5 cases was found abnormal during regular eye examination.Initially 8 eyes (20％) were misdiagnosed as retinoblastoma (1 eye),Coat' s disease (1 eye),cataract (2 eyes),iridocyclitis (2 eyes) and retinal detachment (2 eyes).23 eyes had retinal detachment,19 eyes had cataract.OT was the initial diagnosis for 15 patients (37.5％).The best corrected visual acuity (BCVA) were NLP to 0.7.Ultrasound biomicroscopy (UBM) were performed in 29 eyes,and identified peripheral granulomas in 23 eyes and adjacent tractional retinal detachment in 12 eyes.We also identified 17 cases (68.0％) with elevated IgE level among 25 patients with positive serological antibody test.Conclusions Tractional retinal detachment,vitreous opacities and cataract are the common clinical findings at the first attendance of OT patients.The adjunctive test of serum total IgE level may be helpful for the diagnosis.The application of UBM and specific IgG detection in serum and intraocular fluid,can also improve the diagnosis.

To study the relationship between changes of microbial ATP in four kinds of murine tissues and the postmortem interval (PMI), healthy SD rats were sacrificed and their muscles, livers, spleens and kidneys were sampled at different postmortem intervals. The concentration of microbial ATP was detected using bioluminescent assay and the data was statistically analyzed. The concentration of microbial ATP in muscle increased with PMI time. The peak appeared at the 7th day after death, and at the 10th day, microbial ATP in muscle tissue increased again. In internal organs, the peaks of microbial ATP were observed at the 8th day after death and the level decreased during 8-10 d. The differences in microbial ATP concentration in liver, spleen and kidney were not statistically significant. During day 0 to day 9 after death, the correlation was best between PMI and microbial ATP in muscle. With PMI as the independent variable, the cubic polynomial regression equation was Y=0.02X(3)-0.166X(2)-0.666X+13.412 (R (2)=0.989, P<0.01). In internal organs, the best correlation was found between PMI and microbial ATP during day 0 to day 10. With PMI as the independent variable, the cubic polynomial regression equation was Y=0.016X(3)-0.127X(2)-0.809X+13.324 (R (2)=0.986, P<0.01). There existed high correlations between PMI and microbial ATP concentration in rat tissues. Since only a small amount of tissue was needed for the detection and the sample was not affected by self-decomposition, the method may extend the time range of PMI estimation.

The DNA fragment sized 2 139bp, the same Sequence with AtKup1 gene from Arabidopsis thalianna was used as the templates for DNA family shuffling. The shuffeld AtKup1 gene library was expressed in the mutant of 5. cerevisae in which potassium transporter gene TRK1 and TRK2 were knocked out by homologous recombination. Then the screening was carried out in the low potassium media containing 5. 0 mmol/L KC1 and no histidine in it. it was found that both of diverse and wild AtKup1 gene can rescues the trk1△trk2△yeast mutant strain in low [ K + ] medium. The growth of 2 clones yeast containing diverse AtKup1 were beter than that of AtKup1 wild gene transformant. The sequencig results of the shuffeld AtKup1 showed that there were 2 nucleotide changed, which resulted in 2 amino acid variations in it compared with the original AtKup1. The potassium uptaking capacity of shuffled AtKup1 gene increased significantly when it was transformed into tobacco.