Objective: To investigate the morphology and growth kinetics of the cells derived from the adult normal and herniated nucleus pulposus tissues. Methods: The cells derived from the adult normal and herniated nucleus pulposus were cultured in vitro. Passage 1,3,5 cells were chosen for light microscope and electron microscope observation. The cell growth rate, MTT value, maximal growth density, cellular mitotic index, cloning efficiency, and other parameters were observed in normal and herniated nucleus pulposus and the results were compared. Results: Compared with adult normal nucleus pulposus cells, the cells isolated from herniated nucleus pulposus were irregularly arranged and lost polarization, with rough endoplasmic reticulum slightly dilated. Under the same cellular density and culture conditions, the growth rate of passage 1 cells from adult normal and herinated nucleus pulposus had no significant difference, but the differences of passage 3 cells(P<0.01) and passage 5 cells (P<0.05) were statistically significant. The maximal growth density, MTT value, cellular mitotic index, and cloning efficiency of passage 1 cells of adult normal and herinated nucleus pulposus were respectively 7.28±0.23 and 7.41±0.17, 0.186±0.015 and 0.173±0.008, (25.36±2.14)‰ and (23.13±2.55)‰, and (52.4±2.8)% and (47.7±2.6)% (all P>0.05); those of passage 3 cells were respectively 6.96±0.19 and 5.48±0.22, 0.154±0.018 and 0.110±0.009, (22.52±2.16)‰ and (16.68±2.35)‰, and (48.7±3.3)% and (40.7±2.5)%; and of passage 5 cells were respectively 2.42±0.13 and 0.98±0.14, 0.085±0.006 and 0.050±0.007, (15.61±1.96)‰ and (9.34±2.12)‰, and (40.2±2.3)% and (28.34±2.9)%. There were significant differences between the parameters of passage 3 and 5 cells(P<0.05). Conclusion: The adult normal and herinated nucleus pulposus cells are different in cellular morphology when cultured in vitro. The continuous proliferation ability of the herniated nucleus pulposus cells is obviously decreased than that of the adult normal control group, and aging is more easily seen in the herniated ones.

Child ; DNA Mutational Analysis ; Dystrophin ; genetics ; Exons ; Humans ; Male ; Muscular Dystrophy, Duchenne ; genetics ; Mutation

Objective To explore the clinical efficacy and safety of closed negative pressure drainage(VSD) in the treatment of elderly patients with abdominal trauma and infection.Methods 82 elderly patients with abdominal trauma and infection were selected into clinical research,they were divided into two groups according to the treatment time number.41 cases of odd numbers were in the control group,they were given conventional dressing change and antibiotic therapy.41 cases of double numbers were in the observation group,they were given VSD therapy and antibiotic therapy.The clinical efficacy and safety after treatment was evaluated.Results The daily volume of the observation group [(48.67 ± 3.87) mL] was significantly increased compared with the control group,the dressing times [(8.59 ±1.04) times],hospitalization time [(18.33 ± 1.50) d] were significantly reduced compared with the control group,the differences were statistically significant(t =8.56,7.88,6.74,all P ＜ 0.05).The VAS score after treatment of the observation group was (3.38 ± 0.51)points,which was significantly lower than those before treatment and of the control group,the difference was statistically significant (t =8.06,7.56,all P ＜ 0.05).The infection control rate of the observation group was 92.68％,which was higher than that of control group,and the incidence of adverse reactions of the observation group was 4.88％,which was lower than that of the control group,the differences were statistically significant(x2 =6.87,7.69,all P ＜ 0.05).Conclusion The effect of vacuum sealing drainage technique in the treatment of elderly abdominal trauma and wound infection is significantly,it can effectively control the infection,reduce the number of dressing,relieve the pain of patients,and has the advantages of simple operation,high safety,which is suitable for promotion and application.

Diagnostic Errors ; Electrocardiography ; Humans ; Inferior Wall Myocardial Infarction ; Meningeal Neoplasms ; Meningioma ; Myocardial Infarction ; diagnosis

Adult ; Bacteremia ; Hematopoietic Stem Cell Transplantation ; Humans ; Male ; Nontuberculous Mycobacteria ; Postoperative Complications

Antigens, CD ; metabolism ; Antigens, Differentiation, Myelomonocytic ; metabolism ; Breast Neoplasms ; metabolism ; pathology ; surgery ; Carcinoma, Lobular ; metabolism ; pathology ; surgery ; Female ; Histiocytoma, Malignant Fibrous ; metabolism ; pathology ; surgery ; Humans ; Immunohistochemistry ; Middle Aged ; Receptors, Progesterone ; metabolism ; Retroperitoneal Neoplasms ; metabolism ; pathology ; surgery

Animals ; Decompression Sickness ; prevention & control ; Environmental Exposure ; Hyperbaric Oxygenation ; Incidence ; Rats ; Rats, Sprague-Dawley

Background Tight junctions are thought to play a significant role in the maintenance of the corneal epithelial defense for the eye,and the restoration of the tight junctions is critical during epithelial wound healing after refractive surgery.However,there are few reports about this study. Objective The aim of this study was to investigate and compare the expression of occludin in corneal epithelium following flap-free epipolis laser insitu keratomileusis (Epi-LASIK) and laser-assisted subepithelial keratectomy ( LASEK ). Methods Forty-eight clean New Zealand white rabbits were randomized into 2 groups,and 24 rabbits for each group.Flap-free Epi-LASIK and LASEK were performed in the right eyes of the rabbits in two groups,and other 2 age matched normal rabbits were as normal controls.The animals were sacrificed and the corneal samples were obtained at 1,2,3,5 days after surgery.Immunofluorescence staining was used to detect the expression of occludin in the corneal epithelium,and RT-PCR was used to identify the level of occludin mRNA in the central cornea. Results Occludin protein was expressed innormal corneal epithelium and showed the green fluorescence with the regular arrangement.The fluorescence intensity was lower in 1 -2 days in LASEK group with the irregular arrangement;while the fluorescence signal in corneal epithelium was stronger in flap-free Epi-LASIK group.3-5 days after surgery,the fluorescence intensities were bothenhanced in two groups.RT-PCR showed that the relative expression of occludin mRNA in corneal epithelium was 0.11 ±0.02,0.25 ± 0.03,0.43 ± 0.04 in LASEK group 1,2,3 days after surgery,respectively,and was lower than those of flap-free Epi-LASIK group ( 0.20± 0.04,0.44 ± 0.04,0.76 ± 0.04 ),showing significant differences between these two groups ( t =6.476,12.898,17.315,P＜ 0.05 ).No significant difference was seen in the expression of occludin mRNA in 5 days after surgery between two groups( t=-0.733,P＞0.05).The relative values of occludin mRNA expression in corneal epithelium were gradually increased with time prolongation,presenting a significant difference among various time points ( Ftime =768.903,P =0.000). Conclusions The reformation of occludin in flap-free Epi-LASIK group is faster than that in LASEK group.Therefore,flap-free Epi-LASIK is prominant in reducing the stimulated symptoms and complication after the surgery.

2 cm) who were treated with endoscopic polypectomy in 2 different means,respectively.Methods The clinic data of 68 children with giant colonic polyps were review analyzed.Thirty-five cases were received endoscopic clips ligation and the other 33 cases were received endoscopic snare resection.Results All the 35 cases out of endoscopic clip ligtion group were sucessfully cured.There were only 3 cases showedl a little bleeding in this group.In the endoscopic snare resection group,there were 10 cases showed bleeding,8 cases showed polypectomy syndrome,1 case transferred into(operation).Conclusions The complication incidence in endoscopic clips ligation group is lower than that in endoscopic snare resection group.The endoscopic clipping brings about an effective and safe way to treat giant colonic polyps in children.

During the latest researches on knee ostarthritis,it is discovered that before the morphology changes of cartilage,there were changes of the content of proteoglycan and water and changes of alinement of surface layer collagen fibers in cartilage matrix.By the new technologies of DWI,proton density mapping image,23Na MRI,T2Mapping image and so on,not only the pathological changes of cartilage can be disclosed,the component changes of cartilage matrix can also be detected.Accompany with the progress in the technology of software and hardware,MRI will have more and more prospects in early diagnosis and therapeutic effect evaluation of knee ostarthritis.