Ischemia-reperfusion injury is a pathophysiological process caused by a number of gene expression changes,with the development of artery occlusion-reperfusion and surgery involved in vascular,such as thrombolytic therapy,cardiopulmonary bypass heart surgery and organ transplants,etc.it has been more and more important.Gene chip technology provides a powerful means for the systematic study of the mechanisms of incidence and prevention of ischemia-reperfusion injury,for its unique advantage in high throughput,high-efficiency,large-scale research.Since gaining importance in recent years,it has been widely used in various organs and tissues,and has achieved some progress.In this paper,the application of gene chip technology in the incidence and prevention of ischemia-reperfusion injury of various organs and tissues in recent years is given a certain summary.

Objective To investigate the repairative effect of local high expression of glial cell line-derived neurotrophic factor (GDNF) in the repair of sciatic nerve defects. Green fluorescent protein (GFP) gene was used as reporter gene. Two groups including gel matrix control group and gel matrix plus MSCs group were set ( 10 rabbits per group). Methods GDNF secreting mesenchymal stem cells (MSCs) mediated by lentiviral vectors were suspended in Matrigel to produce the artificial graft, and then it was locally implanted to a 20 mm-long sciatic nerve defect in rabbits. Results In the GDNF group,the nerve continuity was restored in seven rabbits and the functional amelioration of the wounded limb was apparent. While there found no restoration of the nerve continuity in the control groups. The migration distance of GDNF secreting MSCs was 20 mm, suggesting a good integration of the transplanted cells with host cells. The glial fibrillary acidic protein (GFAP) + green fluorescent protein (GFP) and -100 protein GFP accounted for 60% and 70% respectively in the experimental group, while it was only 40% and 30% in gel matrix plus MSCs group. Conclusions Local implantation of GDNF secreting MSCs can promote the regeneration and functional recovery of the sciatic nerves. GDNF seems to play an important role in inducing transdifferentiation of MSCs to Schwann cell lineage.

Objective Investigate the risk factors that leading to the progression of the mild traumatic brain injury and the treatment methods.Methods To conduct 68 cases of patients suffering from mild head injury,investigate the risk factors that leading to the progression of the disease,and according to the retrospective to be analyzed.Results The 68 cases of patients suffering from mild head injury,after aggressive and effective treatment,achieved the desired effect.Conclusion Take the reasonable methods to treat patients suffering from mild head injury,observed the changes of disease carefully and closely,check the head CT early,timely and regularly,adjustment the treatment programs timely,could save lives that patients with delayed bleeding or cerebral edema in the brain.

Objective Investigate the effective for treatment of restore the bone flap saved in the abdomen in the early.Methods To conduct the 88 cases of people with restore the bone flap saved in the abdomen in the early,and according to the retrospective to be analyzed.Results Through the proof of clinical testing that the method of restore the bone flap saved in the abdomen in the early is feasible.Conclusion Select the appropriate cases that with method of restore the bone flap saved in the abdomen in the early could reduce medical costs and rejection.

To evaluate the effect of delayed treatment with monoclonal antibody to tumor necrosis factor-alpha (TNF-? MAb) on systemic hemodynamics and multiple organ dysfunction following prolonged hemorrhagic shock and resuscitation. Method: Adult male Sprague-Dawley rats were subjected to prolonged hemorrhagic shock (MAP of 4.00-4.66 kPa for 180 rain)followed by resuscitation over 50 min. The animals were treated intravenously with either TNF-? MAb (20.0 mg/kg) or the control protein(albumin,20.0 mg/kg)15 rain after the end of resuscitation(65 min after shock). Result: Compared to the albumin controls, delayed treatment with TNF-? MAh significantly reduced the total peripheral resistance index (P

Objective To determine the effects of Hyperoside ( Hyp) on the memory impairment induced by hypobaric hypoxia. Meth-ods SD rats were exposed in hypobaric hypoxia chamber which simulated 6 100 m high altitude for 7 days to induce memory impairment. Morris maze was applied to determine the effects of Hyp on memory in hypobaric chamber. The activities of SOD and CAT and levels of GSH and MDA in rat hippocampus were measured by assay kit ( Nanjing Jiancheng Bioengineering Institute) . Results In target quadrant,the time and path and the frequency to cross platform were reduced under hypobaric hypoxia as compared with normoxia group ( P < 0. 05 or P<0. 01). Administration of Hyp significantly attenuated the hypoxia-induced the memory impairment responses(P<0. 05 or P<0. 01). The activities of SOD and CAT in rats hippocampus exposed to hypobaric hypoxia were significantly improved in the presence of Hyp as com-pared with the absence of Hyp(P<0. 05 or P<0. 01),so did GSH level (P<0. 05 or P<0. 01). Significant decrease of MDA levels was observed in the hippocampus on exposure to hypobaric hypoxia with Hyp as compared without Hyp. Conclusion Hyp reduces hypoxia-in-duced oxidative stress injury by upregulating activity of antioxidant proteins such as SOD,CAT in hippocampus of rats, which contribute to at-tenuate memory impairment induced by hypobaric hypoxia.

OBJECTIVE:To establish a method for the content determination of glabridin in Clycyrrhizae Radix et Rhizoma from different regions. METHODS:HPLC was performed on the column of Inertsil ODS-SP with mobile phase of acetoni-trile-0.05%phosphoric acid(gradient elution)at a flow rate of 0.8 ml/min,detection wavelength was 280 nm,the column tempera-ture was 35 ℃,and the injection volume was 20 μl. RESULTS:The linear range of glabridin was 0.906-18.12 μg/ml(r=0.999 7), RSDs of precision,stability and reproducibility tests were lower than 3%;recovery was 98.73%-101.90%(RSD=1.25%,n=6). There were obvious differences among the glabridin contents in G. uralensis from different regions. CONCLUSIONS:The method is simple and accurate with high precision,and can be used for the content determination of glabridin in Clycyrrhizae Radix et Rhi-zoma.

Objective To compare the stray-light effects caused by different parts of optic edge of 7 intraocular lens(IOL)edge designs.Methods Monochromatic laser beam was used to illuminate the upper edge and complex of three-piece and single-piece IOLs at several angles of incidence.Light images produced in the retinal plane were photographed with a digital camera.The differences in the light images were compared between three-piece and single-piece IOLs.Results There were differences in light images between 2 groups,which may be due to different shapes of edge design when the upper edge of IOL was illuminated.Three-piece IOL exhibited line images or dense patch,which differed with single-piece IOL when the complex of IOL was illuminated.Conclusion Both edge shape and irregular structure in three-piece IOL complex may be important factors for postoperative glare in pseudophakic patients.

Objective To investigate the indoor air formaldehyde pollution in the human anatomy laboratory and to study the control measures and their effects on prevention and control of formaldehyde pollution. Methods The levels of formaldehyde in the air of the human anatomy laboratory with exhaust ventilatary conditional system and without such a system were determined respectively according to the method recommended in the Sanitary Standard of Public Place. Results Without the exhaust ventilatory conditional system, the level of formaldehyde of indoor air reached to 8.349 mg/m3, while the level of formaldehyde was decreased significantly to 0.501 mg/m3 with the system. Conclusion Without the exhaust ventilatory conditional system, the formaldehyde pollution in the air of the human anatomy laboratory was very serious, which might have adverse effects on teachers' and students' health, while with the system, the formaldehyde pollution could be controlled effectively.