Spinal disease is the injury caused by congenital malformation, degeneration, inflammation and trauma. These injuries lead to structural lesion of spinal itself, intervertebral discs, spinal cord, nerve root and the attachment, and can cause spinal and associated diseases. Spinal diseases include some frequently encountered diseases, as well as some stubborn and serious diseases. These diseases may cause pain of head and neck, shoulder and arm, waist and leg when they are mild, and partial or thorough paralysis when they are serious. In this article, the history, development, foundations and research progress of non-surgical operation of spinal diseases and the developing tendency of modern spinology are introduced.

Colorimetry ; Coloring Agents ; Evaluation Studies as Topic ; Filtration ; methods ; Food ; Humans ; Image Interpretation, Computer-Assisted ; Mastication ; physiology ; Particle Size ; Time Factors

Objective To assess the feasibility of K value of dynamic contrast enhanced MRI (DCE-MRI) in evaluation of anti-angiogenic effects on nude mice with orthotopic transplantation tumor model of gastric cancer.Methods Nude mice with orthotopic transplantation tumor model of gastric cancer were randomly assigned to two groups:Treatment group (n =15),mice were given apatinib intragastrically for 18 days (100 mg/kg),and control group (n=15),mice were given ddH2O2 in the same manner.After 18 days,DCE-MRI was performed and K value was measured.Then the tumors were dissected from the adjacent tissues in order to detect the microvessel density (MVD) and vascular endothelial growth factor (VEGF) expression levels.MVD and VEGF expression level were compared between treatment group and the control group.Results MVD (x2 =4.89,P＜0.05) and VEGF expression level (x2 =8.69,P＜0.01) of treatment group were much lower than those of control groups.The Kt value of treatment group was significantly lower than that of control groups ([0.63±0.05]/min vs [1.66±0.23]/min,t=17.05,P＜0.01).Conclusion The value of k in DCE-MRI can be utilized to assess the effects of apatinib on nude mice with orthotopic transplantation model of gastric cancer.

[Objective]To observe the histomorphology and ultrastructure of the intervertebral disc(I D) in the rat model with cervical vertebral unbalance of dynamic and static force.[Method]Sixty SD rates were randomly divided into 4 groups: 3 months,5 months,7 months and the control group.The cervical I D degeneration model was made by destroying the neck muscle of rats and the tissues wer collected every month.The number,area and thickness of the cartilage end-plate were measured by the means of Miyamoto's Classes.The ultrastructure of the apoptosis cells of the intervertebral disc was observed under the electron microscope.[Result]Compared with the control group,the 3 months group showed degeneratin changes,with disordered structure of the annular fibrosis and thickness increase of calcification layer and decrease of blood vessel unmber in the cartilage layer.Complete fibrosis was found in nucleus pulposus in 5 months model group,with the fibro lamellar structure disappeared and few blood vessel buds.The features of 7 months model group was similar to 5 months and osteophyma had been formed near the bordr of part intervertebal.Under the electron microscope,the number of surface projection and organelles was decreased.Fatty drop and apoptotic body could be seen in disc cells of 3 month model group.Few cells,broken collagen fibers in ECM and more cavitation cells for necrosis in 5 months and 7months model groups could be seen.[Conclusion]The cervical I D of model groups has shown typical morphological changes of degeneration and this trend was more serious with the time passing.In the early and middle stage of degeneration,the apoptosis cells can be seen,but in the terminal stage the cellular necrosis was more common.

Epilepsy is the common neurological disease, and antiepileptic drugs are the main means for the treatment of epilepsy. However, there is no conclusion on the timing of drug withdrawal in patients with epilepsy. In recent years, some large-scale prospective studies have provided some guidance on anti-epileptic drugs withdrawal. This article focused on the factors affecting the prognosis and timing of drug withdrawal, hoping to further the understanding of anti-epileptic drugs withdrawal and instruct clinical practise.

In order to investigate the effects of vector-based hairpin small interference RNA (shRNA) on the reversal of multi-drug resistance (mdr) of A2780/Taxol cells, a novel vector pEGFP-H1/mdr1 containing mdr1-shRNA targeting at position 2943-2963 of mdr1 was designed and synthesized. Subsequently, A2780/Taxol cells were transfected with pEGFP-H1/mdr1, and the expression of mdr1 mRNA and P-gp was detected by using RT-PCR and Western blot respectively. MTT was used to measure the 50% inhibition concentration (IC(50)) of Taxol to A2780/Taxol cells. The results showed that at the 24th and 48th h after transfection, the expression of mdr1 mRNA was decreased to (52.1+/-1.0)% and (0.01+/-1.7)%, and that of P-gp decreased to (88.3+/-2.1)% and 0%, respectively. At the 48th h after transfection, the relative reversal rate of A2780/Taxol cells to Taxol was 69.54%. In vivo, the nude mice xenografts were injected with pEGFP-H1/mdr1, and then administrated Taxol. The tumor volume in pEGFP-H1/mdr1-transfected group was significantly reduced as compared with that in blank control group or pEGFP-H1-transfected group (807.20+/-103.16 vs 1563.78+/-210.54 or 1480.78+/-241.24 mm(3), both P<0.01). These results suggested that transfection of pEGFP-H1/mdr1 could efficiently down-regulate the expression of mdr1 mRNA and P-gp in A2780/Taxol cells, and effectively restore the sensitivity of A2780/Taxol cells to Taxol both in vitro and in vivo.

Objective To establish a platinum resistance nude mice model of epithelial ovarian cancer (EOC) and investigate its resistance to cisplatin (DDP) biological characteristics, so as to provide evidences for exploring chemoresistence mechanisms and screening for reversal targets in vivo micro-environment. Methods The resistance model was produced by repeating a crossover subcutaneous injection of human ovarian cancer SKOV3 cells labelled green fluorescent protein(GFP) and transplatation of tumor fragment into nude mice. Two kinds of cancer cell lines of SKOV3/DDPⅠand SKOV3/DDPⅡwere induced with acquired resistence to DDP. The chemosensitivities of EOC cells to DDP were tested and half maximal inhibitory concentration(IC50) was measured by methyl thiazolyl tetrazolium (MTT) and flow cytometry (FCS). Dynamic analysis among the concentration of DDP treatment and cell apoptosis, cell cycle phase distribution and intracellular DDP concentration. The expression of PTEN, STAT5, XIAP, BRCA1 and MDR1 were examined by real time quantitative reverser transcription PCR (qRT-PCR) in vivo. Results IC50 value of cisplatin for SKOV3/DDPⅡ were 2.83 ± 0.12 and 3.82 ± 0.19 folds than those for SKOV3/GFP by MTT and flow cytometry, separately. SKOV3/DDPⅠwere 2.20±0.16 and 3.40±0.20 folds. The apoptosis rate of SKOV3/DDPⅡ and SKOV3/DDPⅠ were decreased significantly at 29.7 and 39.6μmol/L DDP when treatment for 36 hours,which were lower than that of SKOV3/GFP cells [(57.0±1.4)%vs (37.6 ± 4.36)%vs (83.1 ± 2.71)%,P=0.024;(74.4 ± 2.3)%vs (50.5 ± 3.4)%vs (87.4 ± 4.0)%,P=0.001]. SKOV3/DDPⅠ and SKOV3/DDPⅡ was positively related with cisplatin processing time. Intracellular DDP accumulation of SKOV3/DDPⅡand SKOV3/DDPⅠwere lower than SKOV3-GFP in dynamic processes(P<0.05). Besides intracellular DDP accumulation of SKOV3/DDPⅡ also lower than SKOV3/DDPⅠin dynamic processes (P<0.05). Transplanted tumor of SKOV3/GFP appeared organelle degradation and nuclear membrane imcompleted after five times DDP injection with concentration of 4 mg/kg. SKOV3/DDPⅡand SKOV3/DDPⅠdid not generate these phenomenon untill eighth DDP injections with concentration of 4 mg/kg. STAT5 and BRCA1 of SKOV3/DDPⅡwere increased with DDP treatment at concentration of 4 mg/kg. Expression of XIAP from SKOV3/DDPⅡwas positive correlated with injection times. STAT5,XIAP and BRCA1 of SKOV3/DDPⅡwere up-regulated 3.86,28.1 and 14.6 folds than those in SKOV3/GFP cells after eighth DDP treatment, separately. While PTEN of SKOV3/DDP Ⅱ was decreased 3.77 folds. Conclusions We have successfully established platinum-resistent EOC mice model,which provides a new platform for further study on chemoresistant reversal and individualized clinical treatment. The results shown that potential mechanisms of SKOV3/DDPⅡDDP-resistance included over-expressed BRCA1 gene may be promote DNA damage repair, elevate XIAP gene to decrease cell apoptosis,up-regulated STAT5 gene and decrease PTEN gene to stimulate proliferation.

OBJECTIVE: To study the effects of Yiqi Huayu Recipe on neural cell adhesion molecule (N-CAM) in neuromuscular junctions during nerve regeneration in rats with lumbar nerve root compression. METHODS: The rats with lumbar nerve root compression were given Yiqi Huayu Recipe for 10, 20 and 30 days respectively. The distribution of N-CAM in neuromuscular junctions of soleus muscle in rats was examined with immunohistochemical method and confocal laser scanning microscopy technique. The acetylcholine receptor (AChR) was visualized with fluorescein-conjugated alpha-bungarotoxin (alpha-BTX). The overlap areas of N-CAM and AChR sites were measured with NIH image technique. RESULTS: The aggregates, sprouts and extensions of N-CAM in the neuromuscular junctions and the overlap areas of N-CAM and AChR sites in the Yiqi Huayu Recipe-treated group were all better improved than those in the untreated group. CONCLUSION: The expression of N-CAM is regulated according to the state of innervation for muscles. Yiqi Huayu Recipe may accelerate this nerve regeneration process.

OBJECTIVE: To study the effect of Yiqi Huayu Recipe on neurons in neuromuscular junction after L5 nerve root compression in rats. METHODS: By using immunohistochemistry, confocal laser scanning techniques and protein gene product 9.5 as a neuronal marker, the motor endplates were visualized with fluorescein-conjugated alpha-BTX. The effect of Yiqi Huayu Recipe on nerve terminals of neuromuscular junction at 10, 20, 30, 60 days after L5 nerve root compression was observed in rat soleus muscles during regeneration. The overlap areas of terminals and endplates were measured with NIH image technique. RESULTS: As for the aggregates, sprouts, extension of nerve terminal during regeneration, the connecting speed and range of nerve terminal with endplates, as well as the reformation of neuromuscular junctions during regeneration, Yiqi Huayu Recipe group was better than that of the control group. CONCLUSION: Yiqi Huayu Recipe can promote the hyperplasia of neurons and enhance the regeneration function. It also can accelerate the neuromuscular junction reformation and shorten the process of regeneration.