Objective To study the morphological changes of the Schwann cells within the predegenerated nerve. Methods The ulanr and the median nerves were cut bilaterally at the axillary level in 42 SD rats. A nerve segment of 1 cm in length was harvested from the distal segment of each of the cut nerves right after the operation, 3 days, 1, 2, 3, 4 and 8 weeks postoperatively(group 1-7). The methods of Schwann cells culture and S-100 protein standing were used to study the temporal changes of the number of the Schwann cells, and the thickness of myelin of the predegenerated nerve were studied under electromicroscope. Results The number of Schwann cells increased after nerve transection, and reached a peak of [(3.52?0.27)?107]/ml in one week. The thickness of myelin also increased after nerve transection, and was thickest at about (231.2?8.9) nm in one week. The myelin thickness slowly decreased after this time. Conclusion The number of the Schwann cells and the thickness of myelin of the predegenerated nerve were changed with time.

Objective:To analyze the difference of glomerular filtration rate (GFR) among image processing of the renal dynamic imaging through various methods.Methods: The renal dynamic imaging was processed through various methods, and using the image post-processing software. Using SPSS statistic system to analyze the data.Results: The methods of image processing had impacts on GFR. (1)The difference of GFR data obtained from images which were processed by different operators were not statistically significant. (2) The difference of GFR data obtained from images which image processing repeatedly by the same operator were not statistically significant. (3)GFR data measured based on background detecting regions of interest (ROI) (manually defined or auto-defined ROI) placed in different positions of kidney image had statistical significant. (4) The difference of GFR data were measured by manually defined and auto-defined background ROI had statistical significant.Conclusion: Choosing the proper image processing way, combining clinical appearance and detection, and gaining real data help to ensure the accuracy of imaging diagnostic reports.

Objective To explore the association of lipid metabolism and bomocysteine with hypertensive disorders in pregnancy and observe the inflammatory reaction and the pathological change of placenta.Methods We conducted a prospective randomized placebo-controlled study.Seventy-four cases with hypertensive disorders in pregnancy were recruited as the experimental group and 77 cases of normal pregnant women were recruited as matched control group from Aug.2008 to Mar.2010.The relationship between lipid metabolism and homocysteine was analyzed.Results There was significant difference between the two groups in body-mass index before pregnancy(29.03±4.52 vs.23.99±5.90,t =5.88),cholesterol[(6.16±1.48)mmol/L vs.(5.01±1.05) mmmol/L,t =5.52],low density lipoprotein[(3.46±1.35) mmol/L vs.(2.26±0.86) mmol/L,t =6.54]and C-reactive protein[(29.04±14.90) mmol/L vs.(15.48±4.57) mmol/L,t =7.62](P ＜ 0.05).No significant difference was found on triglycerides[(3.29±1.03) mmol/L vs.(3.49±1.37) mmol/L],high density lipoprotein[(1.84±0.40) mmol/L vs.(1.88±0.35) mmol/L],homocysteine [(8.77±2.65) mmol/L vs.(8.40±2.03) mmol/L]and neonatal weight[(3547±519)g vs.(3431±461)g](P ＞ 0.05).Significant difference exists in placenta pathology of infarction(54.55％ vs.31.04％),villi dysplasia,fit nodules form and hypoxia(65.46％ vs.39.66％)(P ＜0.05).Conclusion We should detect lipid,homocysteine and C-reactive protein by dynamic combinational ways,pay more attention to women with high BMI before pregnancy,and value placenta pathology research on hypertensive disorders in pregnant women.This has high clinical significance in revealing the etiology of hypertensive disorders in pregnant women and improving pregnant outcomes.

Objective To analyze clinical features,surgical treatment efficacy and prognostic factors of bone metastasis patients after liver transplantation for hepatocellular carcinoma.Methods A retrospective clinical data of 20 bone metastasis patients after liver transplantation for hepatocellular carcinoma from July 2000 to January 2010 were received.The effect of surgery aimed at bone metastasis was evaluated.Univariate and multivariate prognostic risk factors were analyzed.Results The median survival time of these patients was 7.5 months and 1-year survival rate was only 20％.Surgical treatment could relieve pain and promote patients' peformance status significantly.Univariate and multivariate analysis found that tumor microvascular invasion within the removed recipient liver was the only prognostic risk factor.Conclusions Patients of bone metastasis after liver transplantation for HCC had poor prognosis.Surgical treatment helps improve patient's quality of life.Tumor microvascular invasion is the risk factor of surgical prognosis.

10-15 years were 7 cases(6.3%),they were randomly divided into treatment group and contol group.The treatment group with 60 patients were given INF-? and polyresistin,age 3 years,given IFN-? 200 000 U per day;and polyresistin 5 mg per time,3 times every day,the course of therapy were 5 days.The control group was given traditional Chinese medicine at the same time.Results After therapy,in treatment group,53 cases(88.3%) of children′s cooling time were lower than 5 days,47 cases(78.3%) of children′s rash subsided time were lower than 6 days,48 cases(75%) of children′s Catarrhal symptoms disappeared time were lower than 5 days,and the rate of complications′ occurrence were 15 cases(18.3%).In control group,28 cases(53.8%) of children′s cooling time were lower than 5 days,14 cases(26.9%) of children′s rash subsided time were lower than 6 days,28 cases(53.8%) of children′s Catarrhal symptoms disappeared time were lower than 5 days,and the rate of complications′ occurrence were 37 cases(71.5%),there were significant differences between both groups(Pa

Objective To determine the role of flagellar motor protein MotA in the pathogenesisassociated chemotaxis and colonization of Campylobacter jejuni. Methods The motA gene as well as Kan~r gene and plus-motA gene segments for motA gene knock-out were amplified by PCR and the target amplification fragments were sequenced after cloning. A suicide plasmid(pBlueskrit-Ⅱ-SK~(motA-kan)) and a motA gene knock-out mutant (motA~-) were constructed based on homologious recombination. By using semisolid plate migration test, hard agar plus (HAP)-based chemotactic test towards sodium deoxycholate (SDC) in vitro, and jejunal colonization test in BALB/c-ByJ mice were performed to determine the differences of flagellar motility, chemotaxis towards SDC and colonization in murine jejunum between motA~- mutant and wild-type strain. Results The nucleotide and amino acid sequences of the cloned motA gene were 100% identical to the reported corresponding sequences. The results of PCR, sequencing and continuous passage culture in antibiotics-contained medium demonstrated that both suicide plasmid and motA~- mutant were successfully generated. The diameters of clonies on semisolid plate and 0.2 mol/L SDC-induced chemotactic tings in HAP as well as the bacterial numbers adhering to the surface of murine jejunal mucosa and in jejunal content of motA~- mutant were significantly less than those of wild-type strain(P<0.05). Conclusion A motA gene knock-out mutant of C. jejuni was successfully constructed in this study, motA is an essential gene for flagellax motility, pathogenesis-associated chemotaxis and colonization of C. jejuni.

Objective To determine the effect of Leptospira interrogans lipopolysaccharide (L-LPS) inducing apoptosis of murine mononuclear-macrophage cell line( J774A. 1 ), and apoptotic regulation of Toll-like receptor(TLR) and associated intracellular signaling pathways. Methods Lipopolysaccharide (L-LPS) of L. interrogans serogroup Icterohaemorrhagiae serovar Lai strain Lai 56601 was prepared using phenol-water method. The effects of L-LPS inducing J774A. 1 cell apoptosis and the apoptosis-blocking with FasL neutralizing antibody were detected by flow cytometry. Real-time fluorescent quantitative RT-PCR (qPCR) and flow cytometry were performed to measure the changes of Fas/FasL mRNA and protein expression levels in J774A. 1 cells before and after L-LPS treatment. The regulations in L-LPS-induced cell apoptosis by TLR2 and TLR4 as well as p38MAPK, JNK, ERK pathways were determined by either TLR2 or TLR4 antibody blocking test, signaling pathway blocking test and flow cytometry. Results 56.50%, 69.28% and 24.35% of the J774A. 1 cells after treatment with 100 ng/ml L-LPS for4, 12 and 24 h were apoptotic,while the apoptosis rates were decreased to 11.21%, 21.58% and 12.70% after the cells blocked by FasL neutralizing antibody(P ＜0.05). The levels of FasL and Fas mRNAs in J774A. 1 cells treated with L-LPS for 4, 12 and 24 h were elevated with 1.34, 2.12, 2.10 times and 2.45, 3.87, 3.12 times compared to those in the L-LPS untreated cells (P ＜ 0. 05 ), respectively, while the expression rates of FasL and Fas proteins were upregulated to 18.61%, 60.13%, 42.75% and 76.34%, 85.70%, 77.92% from 4.82% and 15.32% apoptotic rates in the L-LPS untreated cells, respectively( P ＜0.05 ). The L-LPS-induced apoptosis rate( 11.54% ) of TLR2 antibody blocked J774A. 1 cells was significantly lower than that(66.56% ) of the J774A. 1 cells without TLR2 antibody blocking( P ＜0.05 ), but L-LPS-induced apoptosis rate of TLR4 antibody blocked J774A. 1 cells was as high as 55.27% ( P ＞ 0.05 ). Compared to the apoptosis rate (62.17%) in the p38MAPK and JNK pathway-free J774A. 1 cells, the L-LPS-induced apoptosis rates in p38MAPK blocked cells(20.54% ) and JNK blocked cells(47.98% ) were significantly lower( P ＜0.05 ),and the apoptosis rate in ERK blocked cells was as high as 61.72% ( P ＞ 0.05 ). Conclusion L-LPS was recognized by TLR2 and upregulates both Fas and FasL expression via p38MAPK and JNK pathways, which involving in the process of the L-LPS-induced cell apoptosis.

Objective To study the effects of olanzapine on glucolipid metabolism,liver function and prolactin level in childhood onset schizophrenia(COS) to provide reference for clinical medication.Methods Thirty-eight patients with COS aged 13-17 years old were treated with olanzapine for at least two weeks.The changes of body mass,alanine aminotransferase(ALT),aspartate aminotransferase (AST),total cholesterol (TC),triglyceride (TG),glucose (GLU) and prolactin (PRL) were detected and compared between before and after treatment.Results The body mass after medication in children patients was significantly increased,average increase by (3.50-t-1.90)kg (P＜0.01).The levels of ALT,AST,TC,TG and PRL after treatment were higher than before treatment (P＜0.05).However,there was no statistically significant difference in blood GLU level between before and after treatment(P=0.598).The body mass change before and after treatment was positively correlated with ALT and AST levels(r=0.366,0.377,P＜0.05);whereas the PRL level before and after treatment was negatively correlated with the body mass change (r=-0.432,P＜0.01).Conclusion Olanzapine can lead to the body weight gain and increase of ALT,AST,TC,TG and PRL levels in COS patients.

Objective To discuss the MRI features and pathogenic mechanisms of lung cancer intramedullary spinal cord metastasis (ISCM). Methods Four cases with clinically and 3 cases pathologically proved lung cancer ISCM were analyzed retrospectively. Turbo spin-echo sequence T 1 and T 2 weighted images were acquired in all patients. T 1 weighted images were obtained after intravenous administration of Gd-DTPA in all patients. Results A total of 7 ISCM were displayed by MR studies. The tumor occurred in thoracic cord (3/7) and in medullary cone (4/7). The tumor involved the central aspect of the cord. The lung cancer ISCM showed hypointensity (n=1) or isointensity (n=6) on T 1WI and hyperintensity on T 2WI. The extensive cord enlargement with cyst formation or syringomyelia was common. On contrast study, all tumors showed marked homogenous enhancement with clear borders. Conclusion The lung cancer ISCM usually presented as solitary lesions with marked contrast enhancement. The extensive cord enlargement was common in all patients. Because of the limitation in the evaluation of lung cancer ISCM on MRI, definite diagnosis of lung cancer ISCM depended on combination of clinical and MRI data.

Objective To explore the associated risk factors on patients with organophosphorus poisoning combine with respiratory failure secondary pulmonary infection.Methods Two hundred and twenty-four clinical data of organophosphorus poisoning combine with respiratory failure were collected from January 2009 to May 2013.Retrospectively analyzed the situation of pulmonary infection and Logistic regression model were used to analyzed the relative risk of organophosphorus poisoning combine with respiratory failure secondary pulmonary infection.Results The secondary pulmonary infection rate of organophosphorus poisoning combine with respiratory failure was 68.75％ (154/224).Logistic regression analysis showed that combined with aspiration,hand hygiene,breathing machine,the decrease of cholinesterase activity were the relative risk factors (P ＜ 0.05).Conclusions The secondary pulmonary infection rate of organophosphorus poisoning combine with respiratory failure is higher.Combined with aspiration,hand hygiene,breathing machine,the decrease of cholinesterase activity may be the relative risk factors.