Objective To present the CT and MRI findings of the fibrous dysplasia(FD) of the spine.Methods CT and MRI findings were retrospectively evaluated in 19 cases of FD of spine,all of which were confirmed pathologically.Nineteen patients underwent CT plain scanning(19/19) and 5 had enhanced CT scanning(5/19).Patients were also examined by MRI plain scan(11/11) or MRI enhanced scan (6/11).The location of tumors,the type of bone destruction,the boundary of lesions,internal intensity or signal,the enhancement pattern of lesions,and presence of compression fractures,spinal deformity were observed.Result Nine cases had monostotic FD,while 10 had polyostotic FD.In all the 49 lesions of 19 cases,13 lesions were located in the cervical vertebrae,23 lesions in the thoracic vertebrae,11 lesions in lumbar vertebrae,and 2 lesions in sacral vertebrae.Thirty-three lesions involved both vertebral body and appendix.Pure osteolysis were found in 26 lesions on CT examinations.Peripheral osteosclerosis rims (41/49) and expansive lesions(32/49) were seen.Residual bone crest(28/49) and ground-glass opacity(23/49)were noted.Different degrees of vertebral compression were found in 19 lesions.Five patients had spinal deformity.On T1WI,14 lesions showed intermediate or low signal,and 10 lesions presented as heterogeneous signal.On T2WI,6 lesions had low signal intensity,4 lesions were noted as hyperintensive,and 14 lesions presented as heterogeneous signal.Multiple fluid-fluid levels were found in 1 lesion.Low signal rims were seen in 14 lesions.Twenty lesions of 11 patients had significant enhancement.Conclusion Expansive pattern,ground-glass opacity,peripheral osteosclerosis rims and significant enhancement were helpful findings for the diagnosis of spinal FD.

Objective To investigate various sex hormones and the their relation in patients with polycystic ovary syndrome (PCOS).Methods 40 patients with PCOS were matched with 40 age matched healthy women,study group was divided into the obese group and non-obese groups based on body mass index,insulin resistance and non-insulin-resistance based on insulin sensitivity index. The level of follicle stimulating hormone (FSH), luteinizing hormone (LH), prolactin (PRL), estradiol (E2), testosterone (T), androstene dione (A4), sulfal-dehydroepiandrosterone (DHEAS), sex hormone-binding globulin (SHBG), fasting glucose(FG), fasting insulin (FIN) was measured in both group. Homeostasis model assessment insulin resistance (HOMA-IR), insulin sensitivity index (ISI) and free androgen index (FAI) were caulculated. Results ①In the PCOS group,LH, LH/FSH, T, A4, FAI, FIN and Homa-IR were significantly higher compared to the control,while FSH, SHBG, ISI were significantly lower (P<0.05),PRL, FG, E2, DHEAS level did not show difference (P>0.05). ②There were significant differences in T, FAI, A4, but not in DHEAS between the PCOS group and the control one. ③There were significant differences between the hirsute group and the non-hirsute group in T, FAI, A4 (P<0.05). ④In the obese PCOS group compared to the non-obese PCOS group, T, A4, DHEAS were not significantly different, but FAI and Homa-IR were significantly higher, SHBG, ISI, LH/FSH were significantly lower. ⑤The quantity of insulin resistance in the increased T group was significantly higher compared to the common T group. ⑥In the insulin resistance group compared to the non insulin resistance group, there were not significant differences of A4、DHEAS,T and FAI was significantly higher.⑦In PCOS group,there were significant positive correlation between FAI useful parameter compared to T, A4, DHEAS for the diagnosis of PCOS. Obese PCOS women have more severe and BMI,FAI and Homa-IR;BMI and LH/FSH were significant inverse correlation. Conclusions FAI is more endocrine secretion and metabolic disturbance than non PCOS women. Hyperandrogenism and insulin resistance are consanguineous correlation.

Objective To isolate and culture meshenchymal stem cells from murine fetal liver.Methods flMSCs from mouse fetuses were isolated by adhering to plastic surface.Growth kinetics was determined by growth curve.Cell cycle and phenotype were analyzed by FACSan flow cytometry.Differentiation of adhering cells was induced and identified.Results Homogenous fibroblast-like cells were predominated in culture.The counting of flMSCs increased 2 fold after 24 hours and 83.76%?2.88% of flMSCs were in G0/G1 phases.flMSCs were CD44,CD29 positive but negative for the markers of hematopoietic cells such as CD45,CD11b.flMSCs were able to differentiate along adipogenic,chondrogenic and osteogenic pathways even after being passaged several times.ConclusionflMSCs can be isolated by their plastic-attachable property and can expand without losing their multiple differentiation potential in vitro.flMSCs may offer an appropriate cell source for stem cell therapy.

ObjectiveIn order to confirm the relationship of pathogenic factors and clinical manifestation of cerebral palsy. Methods185 children were divided into the prematurity group(91 cases) and maturity group(94 cases). The μ-test was applied to analyze the incidence of clinical manifestation of 185 children with cerebral palsy for different pathogenic factors. ResultsThe sever symptoms occurred more frequently in prematurity group than in maturity group. ConclusionThe earlier the careful follow-up for children with prematurity was performed, the earlier the diagnosis and treatment of cerebral palsy were achiened.

Objective To investigate hemoglobin A1c(HbA1c) and homocysteine (Hcy) in nondiabetic elder patients with coronary heart disease (CHD),and explore their clinical value.Methods Eighty-six non-diabetic elder patients with CHD [45 cases with acute coronary syndrome (ACS) and 41 cases with stable angina pectoris (SAP)] and sixty elder patients without diabetes mellitus and coronary heart disease as control group were selected.The plasma levels of HbA1c and Hcy in all groups were detected and analyzed.Results The levels of HbA1c and Hcy in CHD group were significantly higher than those in control group (P ＜0.05),and levels of HbA1c and Hcy in ACS group were both higher than SAP group (P＜0.05).The change of HbA1c and Hcy had positive correlation (r =0.34,P ＜0.05).Conclusions The levels of HbA1c and Hcy were higher in non-diabetic elder patients with CHD than those without CHD,and might correlate with atherosclerosis.HbA1c and Hcy might be markers of cardiovascular risk.

Objective To explore the MRI diagnostic value for pernicious placental abnormalities.Methods MRI findings of 1 5 patients with pernicious placenta previa were retrospectively analyzed after cesarean section.Results Among all cases,total placenta previa was,1 1 cases and partial placenta previa was 4 cases.The placenta located in the anterior wall in 8 cases,posterior wall in 4 cases,lateral wall in 3 cases.4 cases were diagnosed as normal placenta,6 cases as adhesion,4 cases as implanted,and 1 case as penetrating.These cases had certain special MR features.Conclusion MRI is helpful in diagnosing the location and type of the perni-cious placenta,and showing whether complicated with previa implantation and penetrating.

Objective To investigate the effect of vitamin D on pulmonary function in patients with chronic obstructive pulmona-ry disease,and to explore its possible mechanism.Methods Patients with chronic obstructive pulmonary disease admitted in the hospital were randomly divided into 2 groups,one group of patients were given regular COPD treatment (control group,30 cases), the other group of patients were given vitamin D on the basis of conventional therapy(experimental group,30 cases).Pulmonary function test and C reaction protein (CRP)determination in the 2 groups were performed,the contents of PaO2 ,PaCO2 were also determined.Results Compared with the control group,lung function improvement in experimental group were more obvious,and the the number of acute attack significantly reduced(P <0.05).The concentration of CRP in experimental group was significantly lower after treatment than before treatment(P <0.05),while the concentration of CRP in control group didn′t change significantly (P >0.05).Conclusion Vitamin D contributes to the improvement of pulmonary function in patients with COPD,and its mecha-nism might relate to the reduction of inflammatory reaction.

BACKGROUND: At present,there are many reports regarding the differentiation of bone marrow-derived mesenchymal stem cells or pancreatic gland stem cells into pancreatic islet β-like cells.But little is about umbilical cord blood-derived mesenchymal stem cells(UCBMSCs)differentiation into pancreatic islet β-like cells in vitro.OBJECTIVE: To investigate whether UCBMSCs can differentiate into pancreatic islet β-like cells in vitro and the optimal inducing condition.METHODS: UCB samples were obtained sterilely from healthy parturients.Nucleated cells were isolated by sedimentation with hydroxyethyl starch and MSCs were obtained by adherent method.Then purified UCBMSCs were induced with epidermal growth factor,β-mercaptoethanol,high glucose,Activin A and hepatocyte growth factor(HGF).Following cell morphology observation,induced cells were identified by insulin immunofluorescence.In addition,insulin secretion and glucose-stimulated insulin release were examined by chemiluminescence immunoassay.RESULTS AND CONCLUSION: After induction,many cells exhibited a round appearance and produced islet-like cell clusters.Immunofluorescence assay showed insulin positive in the treated cells.In addition,chemiluminescence immunoassay demonstrated low expression of insulin and secretion of insulin upon glucose challenge.UCBMSCs can differentiate into pancreatic islet β-like cells in vitro.

AIM:To investigate the effect of high glucose toxicity on JNK pathway and cell function of INS-1 cells.METHODS: Cultured INS-1 cells with or without IGF-1 exposure,were treated with glucose at 3 concentrations (5.6 mmol/L,11.2 mmol/L and 33.3mmol/L),respectively. MTT was used to measure the cell viability. Apoptosis was determined by immuno-fluorescence and flow-cytometry analysis. The serine 270 phosphorylation of IRS and phosphorylation of JNK in INS-1 cells were detected in the presence or absence of SP600125 treatment.RESULTS: The cell viability decreased and apoptosis increased with elevated glucose concentrations. The percentage of apoptosis cells was 11.3% in 5.6 G group,12.7% in 11.2 G group and 28.2% in 33.3 G group. There was remarkable increase in apoptosis in 33.3 G group with a 2.49-fold increase to the cells in the basal 5.6 mmol/L glucose. High glucose activated the serine 270 phosphorylation of IRS correlates with JNK phosphorylation in INS-1 cells. Using Western blotting analysis,the levels of JNK phosphorylation were 3.33 fold increased and serine 270 phosphorylation of IRS was 1.17 fold increased in 33.3 G group compared to 11.2 G group (P

OBJECTIVE:To establish the HPLC method for content determination of Azithromycin suspension.METHODS:The determination was performed on Venusil XBP-C18(L) (150 mm?4.6 mm,5?m) column with mobile phase consisted of 0.05 mol?L-1 dipotassium phosphate (pH value adjusted to 8.2 by 20% phosphoric acid)-acetonitrile (45:55) at flow rate of 1.2 mL?min-1.Injection volume was 20 ?L and UV detection wavelength was set at 210 nm.RESULTS:The good resolution between peaks of azithromycin and that of adjacent purity was more than 1.5.The linear range of azithromycin was 0.01～5 mg?mL-1 (r= 0.999 9) with an average recovery of 98.83%(RSD=0.54%,n=6).The precision of intra-day,inter-day and with-day were all lower than 2.5%.CONCLUSION:The method is specific and accurate for the content determination of Azithromycin suspension.