Objective: To explore the influence of granulocyte-colony stimulating factor (G-CSF) combined with adrenocortical steroid and/or immunosuppressants on immune system of donor mice during hematopoietic stem cell mobilization. Methods: The donor C57BL/6 mice were divided into 4 groups according to the mobilization strategies, namely, the G-CSF group (250 μg/kg for 4 days), G-CSF (250 μg/kg for 4 days) + methylprednisolone group (100 mg/ kg on day 3), G-CSF (250 μg/kg for 4 days) + methylprednisolone group (100 mg/kg on day 3) + cyclosporine A (100 mg/kg on day 3), and PBS control group. The post-mobilization T lymphocytes of C57BL/6 mice and the splenocytes of BALB/c mice were subjected to mixed lymphocyte reactions (MLR). The levels of IFN-γ, IL-4, and TGF-β 1 were determined in the supernatants of donor mice splenocytes by ELISA method and the mRNA levels of IFN-γ and IL-4 were determined by RT-PCR. Results: The results showed that the MLR-inhibitory activities in the 3 G-CSF mobilized groups were 42 %, 21 %, and 39 %, respectively; all lower than that in PBS control group (68%). IFN-γ levels in the 3 G-CSF mobilized groups were lower than that in PBS control group, but he levels of IL-4 and TGF-β 1 were significantly higher than those in PBS group(P<0.01), with no significant difference found between the 3 G-CSF mobilized groups. RT-PCR analysis found that the expression of IFN-y mRNA was obviously decreased and the expression of IL-4 was obviously increased (P<0.01). Conclusion: G-CSF combined with adrenocortical steroid and/or immunosuppressants can decrease the allogenic reaction of T lymphocytes and change the types of secreted cytokines in donor mice during hematopoietic stem cell mobilization, which may induce immune resistance in the recipients.

Objective To summarize the experience on treatment of esophageal leiomyoma and mesenchymoma with video-assisted thoracoscope under the assistance of a fiber gastroscope.Methods The clinical data of 14 cases of esophageal leiomyoma and 2 cases of esophageal mesenchymoma treated with video-assisted thoracoscope under the assistance of fiber gastroscope from October 2004 to December 2009 was retrospectively analyzed.Selected different surgical path and operation hole position according to the lesion site.Fiber gastroscope was conductive to accurately find lesion positions,and detected esophageal mucosa was breaked or not.Extra-mucosal excision was conducted in 16 cases.Results Ihere was no death and severe complications during perioperative period.Patients were diagnosed by pathological examination.Thirteen cases were followed up for 6-48(18.5 ±9.5)months,all patients ate unobstructed,and without relapse.Conclusion Treatment of esophageal leiomyoma and mesenchymoma with video-assisted thoracoscope under the assistance of fiber gastroscope has the advantages of intraoperative accurate positioning,minimally invasive,thoroughly,fewer complications,and it is the first choice of esophageal benign tumor treatment.

Objective To investigate the expression of matrix metalloproteinase-2(MMP-2) in the VX2 hepatic tumor.Methods 30 New Zealand white rabbit VX2 liver carcinoma models(all the tumors were verified by histopathology)were set up.The expressions of MMP-2 in 30 cases of VX2 tumor tissues and their pericarcinomatous tissues and normal hepatic tissues in 20 cases were detected by immunohistochemical staining with SP method at 2.5 weeks after implantation.The cell number of MMP-2 positive expression was counted by immunohistochemical stain.Results According to immunohistochemical results,the positiveness of MMP-2 was 86.7%(26/30) in tumor tissues and 53.3%(16/30) in pericarcinomatous tissues and no expressions of MMP-2 in normal hepatic tissues.The expression of MMP-2 were mainly in the tumor cytoplasm and intercellular substance,and also in the part of the tumor thrombi,the bile vessel epithelial cell and vascular endothelial cell.Conclusion The features of the expression of MMP-2 are similar to that of human HCC,and this model is a real animal model for clinical MMP-2 study of human HCC.

Objective To investigate the variations of intestinal flora of common carp in patients with hyperuricemia in Qingdao District.Methods The fecal flora was analyzed by gradient dilution method.The levels of uric acid in blood and feces were detected by enzyme colorimetry method and phosphortungstic acid method,respectively.Results E.coli (7.58 ± 0.34,P ＜ 0.05),the total count of aerobian (7.76 ± 0.67,P ＜ 0.05),and bacteroides (2.75 ± 0.31,P ＜ 0.05) were significantly increased in hyperuricemia patients compared to controls.Bifidobacterium (5.38 ± 0.34,P ＜ 0.05) and lactobacillus (2.69 ± 1.48,P ＜ 0.05) were sig-nificantly decreased compared to controls.Concentrations of uric acid in blood and feces were both significantly higher in the patients relative to healthy controls.Decomposition capability was similar to healthy controls.Decomposition capability of uric acid revealed a close correlation with bifidobacterium and lactobacillus,respectively (r =0.565,0.328,P ＜ 0.05).Conclusions Intestinal dysbacteriosis was found by the analysis of fecal flora in patient with hyperuricemia in Qingdao district.Dysbacteriosis might participate in the process of hyperuricemia onset.

Objective The goal of this study is to understand the function of FKBP51 in resistant to high fat diet-induced obesity using FKBP51 knockout ( KO) mice and in vitro adipocyte differentiation.Methods Four-week old male FKBP51 KO and wild type ( WT) mice were fed separately with regular or high fat diet for 6 weeks.The body weight and food consumption were recorded weekly, the energy expenditure differences ( O2 consumption, CO2 production, respiratory exchange ratio, and heat production) of each group were monitored using the MM-100 metabolism cages system for 24 hours, then the liver from the above animals were stained with the Oil red-O to detect the lipid accumulation and the expression of metabolic genes.In addition, induction of adipocyte differentiation of immortalized MEF cells from WT and FKBP51 KO mice were used to observe the effect of FKBP51 gene on lipogenesis.Results Compared to WT mice, FKBP51 KO mice has less weight increment, and less lipid accumulation in the liver, but with no difference on food consumption during high-fat diet fed.Moreover, FKBP51 KO mice exhibited more O2 consumption, CO2 production and heated production under both RD and HF diet conditions.The PEPCK, G6Pase and UCP-1 genes up-regulation.In addition, lipid content was reduced in FKBP51 gene deficient MEF cells after adipocyte differentiation.Conclusions The FKBP51 gene plays an important role in high fat diet-induced obesity through the energy metabolism enhancement and lipogenesis inhibition.

The study intended to evaluate the effect of high-dese atorvastafin on serum high sensitive C-reactive protein (hs-CRP) and renal function in patients with acute myocardial infarction undergoing elective pereutancous coronary intervention ( PCI ). One hundred and sixty seven patients were randomly divided into two groups: in test group (n =84) patients received oral atorvastatin 80 mg/d and in control group (n = 83) patients received atorvastatin 20 mg/d, the medication in both groups was lasted for 7 days before PCL Compared to levels at 24 h before PCI, serum hs-CRP and creatinine levels at 48 h after PCI were increased in both groups ( both P < 0. 05), and glomerular filtration rate was decreased ( P < 0. 05 ). Compared to control group, serum hs-CRP and creatinine levels 24 h before PCI and 48 h after PCI in test group were significantly lower, and glomerular filtration rate was significantly higher (P <0. 05, respectively). The incidence of contrast-induced nephropathy was lower in test group than that in control group[7% (6/84) vs.18% (15/83), P <0.05]. The results indicate that high-dose atorvastatin might be effective in protecting patients with acute myocardial infarction undergoing elective PCI from contrast-induced nephropathy via inflammatory response inhibition.

Objective To analyze the influence of the Risser sign on the sagittal compensatory mode of the spine in idiopathic thoracic scoliosis after anterior spinal fusion.Methods Between June 2002 and November 2006,43 adolescent idiopathic scoliosis(AIS)patients(Lenke 1)undergone anterior correction with a minimum 2 years follow-up were included in this study.The patients were divided into three groups according to the Risser sign:group A(Risser 0),group B(Risser 1-3),and group C(Risser 4-5).The preoperative,postoperative and follow-up sagittal profile were evaluated by the following radiological parameters measured on the lateral radiograph,including the thoracic kyphosis,the lumbar lordosis,the thoracolumbar junction kyphosis,the distal junctional kyphosis,and the sagittal vertical axis.Results In group A,the thoracolumbar junction kyphosis significantly changed from-1.7° preoperative to 6.6° at the final follow-up,with an average increase of 8.3°.Similarly,in group B,the thoracolumbar junction kyphosis changed from -7.3° before surgery to 0.6° at the final follow-up,with an average variation of 7.9°.No obvious change of the thoracolumbar junction kyphosis was observed in group C.At the final follow-up,the average thoracic kyphosis in three groups was 21.2°,18.4° and 14.7°,respectively.No significance of the variation of the thoracic kyphosis was observed in the three groups,however,in group A and B,the thoracic kyphosis showed an ascending trend during the follow-up without significant statistical difference,in addition; the ratio of the thoracic kyphosis increased in group A was higher compared with group B and C.Conclusion For AIS patients with low Risser sign,the increased thoracic kyphosis,and the thoracolumbar junction kyphosis may be ascribed to the decompensation of thoracolumbar region caused by the reconstruction of sagittal alignment due to the continued growth of posterior elements of the thoracic spine.

short peptide AS1 screened from the phage random peptide library of 12 amino acids has antigenicity and can react with sera of AS patients. These findings indicate that AS1 could be one of candidate molecules of AS-specific serum markers.

BACKGROUND: Different derivatives of chitosan with different molecular weights or degrees of deacetylation show different anti-tumor effects.OBJECTIVE: To study the inhibition effect of water-soluble chitosan and its derivatives, such as sulfonated chitosan, carboxymethyl chitosan and chitooligosaccharides for the growth of hepatocellular carcinoma cell line SMMC7721.DESIGN, TIME AND SETTING: Controlled experiments based on observation were carried out in Jiangxi Institute of Digestive Disease (Nanchang, Jiangxi, China) from January 2004 to December 2006.MATERIALS: Hepatoma cell line SMMC7721 was provided by Jiangxi Institute of Digestive Disease (China). 85.5% deacetylated chitooligosaccharides and 85% deacetylated water-soluble chitosan were produced by Jinan Haidebei Ocean Biological Engineering Co., Ltd (China); Carboxymethyl chitosan and 88.5% deacetylated chitosan were the products of Shanghai Qisheng Biological Products Co., Ltd (China).METHODS: Sulfonated chitosan was prepared using 88.5% deacetylated chitosan and chlorosulfonic acid-formamide, and then was detected with infrared spectroscopy in the Detection Analysis and Test Center, East China University of Science and Technology. SMMC7721 cells in the log phase were inoculated into 96-well culture plates, which were then added with water-soluble chitosan, sulfonated chitosan, carboxymethyl chitosan and chitooligosaccharides with the final concentrations of 25, 50, 100, 200, 400 and 800mg/L. This test was repeated for 3 times, while the control group was also set each time. After 72 hours of routine culture, MTT solution was added into each well and inoculated for another 4 hours. After the culture was terminated, dimethyl sulfoxid was added. The absorbance value of each well was measured at 490nm wavelength on a microplate reader. Three tests were measured to obtain the mean value. Also the inhibition rate was calculated.MAIN OUTCOME MEASURES: Growth inhibition effect of chitosan and its derivatives on the hepatoma cell line SMMC7721.RESULTS: Among the chitosan and its derivates at four kinds of concentrations, water-soluble chitosan and sulfonated chitosan could significantly inhibit the growth of SMMC7721 cells (P<0.001), and the effect was the most significant in the case of sulfonated chitosan. Treatment with water-soluble chitosan and sulfonated chitosan at the concentration of 50mg/L could inhibit the growth of SMMC7721 cells in a dose-dependent manner, and reached a peak at the concentration of 400mg/L and 800mg/L, respectively. Carboxymethyl chitosan and chitooligosaccharides showed no growth inhibition effect (P>0.05).CONCLUSION: Water-soluble chitosan and sulfonated chitosan have significant antigrowth effects on hepatoma carcinoma cells, while carboxymethyl chitosan and chitooligosaccharides are ineffective.

Objective To investigate the role and intracellular signal transduction mechanism in the injury of renal tubular cells induced by postasphyxial-serum in neonate.Methods Human renal proximal tubular cell(HK-2 cell) was used as target cell. The experiment was designed as:control group, asphyxia group ,and pyrrolidine dithiocarbamate (PDTC)blocking group. The attacking concentration of serum was 20%, and the apoptosis rate of HK-2 cells was detected by flow cytometer.Results Compared with controls[(13.3?1.70)%],after being stimulated with postasphyxial-serum, the apoptosis rate of HK-2 cells of asphyxia group [(46.73?3.68)%] and PDTC blocking group [(31.19?2.79)%]were significantly increased(P