BACKGROUND:Treatment and rehabilitation of spinal cord injury is a complicated problem,andthe reconstruction and remyelination of neural reflex pathwaysare the essentialprocess, during which oligodendrocytes play an important role in spinal cord injury repair.
OBJECTIVE:To observe theeffect ofoligodendrocyte transplantation for acute spinal cord injury in rats.
METHODS:Insulin-like growthfactor 1 induced bone marrow mesenchymal stem cels differentiating into oligodendrocytes, and those oligodendrocytes were transplanted into rats with acute spinal cord injury as induced cel transplantation group. Simple normal salineandnatural oligodendrocytes were transplanted into the rat injured spinal cord as control group and oligodendrocyte group, respectively. Rat behavioral changes were observed by inclined planetest and Basso-Beattie-Bresnahan (BBB) scores. Neurological recovery and survivalof the transplanted cels was detected and observed using spinal evoked potential and immunohistochemical staining, respectively.
RESULTS AND CONCLUSION:Compared with the control group, BBB scores and the criticalelevation angle oftheincline planetestsignificantly increased, latencies of spinal motor and sensory evoked potential were on the decline (P< 0.05), and there were no significant differencesin above indicators between the two groups at 4 and 8 weeks after transplantation. Moreover, survivedoligodendrocytes after transplantation could be found in the lesions of spinal cord in both two groups. In conclusion, insulin-like growth factor 1-induced bone marrow mesenchymal stem cels can differentiate into oligodendrocytesthat exact an excelentrole in acute spinal cord injury repair after transplantation, which achieve the equal clinical efficacy tothenatural oligodendrocytes.

OBJECTIVETo explore the effect of Penqiangyan Granule (PG) on the immunity of patients with chronic pelvic inflammatory disease (CPID) of blood stasis and Shen-deficiency syndrome (BSSDS) type.

METHODSSixty patients were randomly assigned to two groups: the treatment group treated with PG and the control group with Penyanjing Granule, 30 cases in each group. The treatment course was 4 weeks for both groups. The clinical efficacy, plasma levels of CD4 and CD8, and the serum levels of tumor necrosis factor-alpha (TNF-alpha) and interleukin-2 (IL-2) were measured before and after treatment.

RESULTSAfter treatment, the total effective rate in the treatment group and the control group was 96.7% and 63.3% respectively with significant difference between groups (P < 0.05); in the treatment group the plasma CD4, CD4/CD8 and serum IL-2 increased obviously, while the plasma CD8 and serum TNF-alpha decreased markedly (P < 0.05), all were significantly different with those in the control group (P < 0.05).

CONCLUSIONPG can improve the immune function and alleviate inflammation in CPID patients of BSSDS type.

Adolescent ; Adult ; CD4-CD8 Ratio ; Chronic Disease ; Diagnosis, Differential ; Drugs, Chinese Herbal ; therapeutic use ; Female ; Humans ; Interleukin-2 ; blood ; Male ; Medicine, Chinese Traditional ; Middle Aged ; Pelvic Inflammatory Disease ; diagnosis ; drug therapy ; immunology ; Phytotherapy ; Syndrome ; Treatment Outcome ; Tumor Necrosis Factor-alpha ; blood ; Yang Deficiency ; diagnosis ; drug therapy ; immunology ; Young Adult

AIM:To investigate the effects of fucoidan on the angiogenesis of multiple myeloma cells in vitro, and its related mechanisms .METHODS:The human multiple myeloma RPMI 8226 cells and human endothelial cells were cultured in vitro.The growth inhibition rate of RPMI 8226 cells was examined by MTT assay .The cell cycle and apoptosis rate were measured by flow cytometry .RPMI 8226 cells were treated with fucoidan for 72 h, and the cell culture superna-tant was collected .The VEGF concentration was examined by ELISA , and the tube formation assay was applied to assess the angiogenic activity .After treatment with fucoidan for 72 h at different concentrations , the protein levels of HIF-1α, VEGF, p-AKT and p-ERK1/2 were detected by Western blot .RESULTS: Fucoidan inhibited the growth of RPMI 8226 cells in a dose-and time-dependent manner .After treatment with fucoidan for 72 h, the cell cycle was arrested at G 1 phase , and the apoptotic rate of RPMI 8226 cells was increased with the increasing concentration of fucoidan , which was much higher than that in control group (P<0.05).The VEGF concentration was significantly decreased with the increa-sing concentration of fucoidan .The numbers and areas of the capillary-like structures decreased while the concentration of fucoidan increased, and those at 100 mg/L were less than those in the control (P<0.05).The protein levels of HIF-1α, VEGF, p-AKT and p-ERK1/2 in fucoidan group were significantly lower than those in control group (P<0.05).CON-CLUSION:Fucoidan inhibits the secretion of VEGF in multiple myeloma cells , and reduces angiogenesis induced by mul-tiple myeloma cells .It inhibits the protein expression of HIF-1αand VEGF , which may be related to inhibiting the phos-phorylation of AKT and ERK1/2.

The technique of RNA interference has been used in the area of cardiovascular system. Chitosan nanoparticles(CS-NP) has been a hotspot of the research due to its good biological characteristics and has a great potential to be used as the carrier for gene delivery. This article gives a simple review the application of the techniques, the currently used preparation methods of CS-NP, the factors that affect the rate of complexing of plasmid with CS-NP, the transfection efficiency of plasmid CS-NP compounds, and its in vitro drug releasing behavior.

Glaucoma,optical neuritis and trauma are optic nerve injury-related diseases.These ocular diseases cause irreversible damage of the vision and even blindness.The study on optic nerve regeneration is a powerful approach for rescuing vision and improving the quality of life of patients.Therefore,how to promote optic nerve regeneration is always the focus in ophthalmology.In recent years,great progression has achieved by modulation of cellular signal pathway,usage of glial cells,stem cells and neurotrophic factor,etc,which lays a basis for the treatment of optic nerve injury.Ophthalmologist should trace and participate in these researches to promote the development of regeneration medicine.This review summarizes these new approaches after discussing factors effecting optic nerve regeneration briefly and proposes questions to answer.

Microbiology is an important basic course of biological subject.Base on using different modern means,the teaching method was explored and attempted,such as quiz teaching,discussion teaching,inductive teaching and teaching check.It is possible for students to be- come main part for teaching course,and student enthusiasm for study was mobilized.

BackgroundThe study of myopia development is always the hotspot worldwide. Recently,scientist found that some growth factor secreted by retinal nerve epithelium cells and retinal pigment epithelium(RPE)cells are associated with the development of myopia. Whenever, the absorption of RPE cells to different wave-length lights is different. ObjectiveThis study was to investigate the effects of different wave-lengths lights on the proliferation of human RPE cells, and explore the influence of different wave-lengths lights on RPE cells secreting hepatocyte growth factor(HGF) ,basic fibroblast growth factor(bFGF) and transforming growth factor-β(TGF-β).Methods The fourth to fifth passages of human embryonic RPE cells were exposed to blue light( λ =480 nm),red light( λ =775 nm) and white light. The cells of control group were harvested in normal condition. The proliferation and growth of RPE cells were assayed by MTT,and the ultrastructure of cells was examined under the transmission electron microscopy at 48 hours after light exposure of RPE cells. Enzyme linked immunosorbent assay(ELISA) was adopted to determine the concentrations of HGF,bFGF and TGF-β in the culture medium in 12,24,48,72 hours. The expression of HGF mRNA in RPE cells was detected by RT-PCR. This study was approved by Ethic committee of Fudan University. ResultsThe A490 values of the cells exposed to blue light,red light,white light and white light were 0. 0218±0. 0014 ;0. 0353±0. 0025 ;0. 0371 ±0. 0024 and 0. 0445 +0. 0046 respectively with the significant difference among 4 groups ( F =12. 579, P＜0.05 ), and A490 value in blue light group, red light group were significantly lower than that of the control group ( t =2.043 ; t =2.024, P＜0.05 ). ELISA showed that the concentrations of HGF and TGF-β in culture medium were evidently elevated as the prolongation of light exposure in various light exposure groups in 72 hours(HGF) and 48 hours(TGF-β) compared with 12 hours with a predominating rise in the control group. The statistically significant differences were found in the concentrations of HGF and TGF-β between control group and blue light group or red light group in the( all P＜0. 05 ). The bFGF level was decreased with the time increase of various light exposure with the significant differences in 72 hours compared with 12 hours( P＜0.05 ). RT-PCR revealed the considerable difference about expression of HGF mRNA in RPE cells among these four groups( P＜0. 05 ), and the lest expression in HGF mRNA was in the blue light group compared with control group( t =3. 972,P＜0.05 ). Thinning of the chromatin, decreasing of organelle and loss of cellular membrane were seen in the blue light group, but no obvious change of ultrastructure of human embryo RPE cells was found in the ret and white light groups. ConclusionsThe irradiation of different wave-length light can effect the growth and proliferation and secretion of HGF,bFGF and TGFβ in human RPE cells in vitro,implying myopia formation is associated to exposure of different wave-length light.

Objective To explore the relation ship between expression of survivin gene in leukemia cells and its clinical effects, and to study the mechanism of survivin resist-apoptosis function in leukemia.Methods Survivin expression was detected by Western blots analysis and expressions of Fas and Caspase were examined by immunohistochemistry in 18 leukemia patients.Results Thirteen cases in peripheral blood mononuclear cell survivin positive expression was detected in 18 leukemia patients(72.2%), but no survivin expression in 10 normal persons. There were significant difference of survivin expression in ALL/ANLL patients groups and different WBC groups(P

Objective To evaluae possible association between interleukin-1 beta (IL-1?) gene exon 5 polymorphism and childhood asthma.Methods The study was conducted in two different groups: asthmatic children(n=55) and healthy children(n=35). The IL-1? gene exon 5 polymorphism was genotyped by polymerase chain reaction-restriction fragment length polymorphism analysis (PCR-RFLP). Results Frequencies of CC,CT and TT genotypes were 92.7%,7.3%,0, and frequencies of C,T allele were 96.4%,3.6% in asthmatic group. However, frequencies of CC,CA and AA genotypes were 85.7%,14.3%,0, and frequencies of C,T allele were 92.9% ,7.1% in healthy group. There were no significant difference in distribution of genotypes and allele frequencies between two groups.Conclusion IL-1? gene exon 5 polymorphism may not be associated with childhood asthma.

Objective To evaluate the clinical application of sweep pattern visual evoked potential in assessing visual acuity (SPVEP-A)of amblyopic children.Design Prospective clinical study.Participants 80 patients(148 case)of amblyopic children and 26 children(52 case)with normal vision.Methods The correlation were analysed of SPVEP-A and E acuity in 80 amblyopic children and of SPVEP-A and PVEP-A in 26 children of normal visual.SPVEP-A was recorded with UTAS-E 3000(LKC)using gratings of 25 differ- ent spatial frequency from 0.2 to 18.8cpd as stimulus.The response were averaged and DFT on the monitor display.SPVEP-A was de- termined by extrapolate to 0 response amplitude.Both transient PVEP-A and SPVEP-A were examined in 26 normal children.The ob- jective visual acuity in PVEP were determined with the highest spatial frequency which evoked a recognizable response.Main Out- come Measures SPVEP-A,PVEP-A and E acuity.Results SPVEP-A were from 0.35 to 0.9 among 80 patients with corrected E acu- ity from 0.1 to 0.8.The correlation coefficient of SVEP-A-I with E acuity was 0.602 .The correlation coefficient of SPVEP-A.between reproducibility detection was 0.448.The correlation between SPVEP-A and E acuity in amblyopic slightly was higher than middle and severe amblyopia(r=0.773 vs r=0.590).In 26 normal children a correlation coefficient of 0.679 was obtained between E acuity anti PVEP-A but 0.424 between E acuity and SPVEP-A.Higher evaluation or lower evaluation of E acuity was found in SPVEP-A in this study.Acuity was upostimated in lower scope of E acuity and underestimated in higher scope of E acuity.The reproducibility and vari- ation were not satisified.Conclusion The sweep VEP is a objective method of amblyopic screening.There is significant positive corre- lation between SPVEP-A and E,but its variability is more great,so we should improve its stability and positive rate uheriorly.