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  • 作者:

    AIM To observe the therapeutic effect of Welcome on gastric mucosal dysplasia in rats.METHODS Rats with gastric mucosal dysplasia induced by MMNG and heat-damage were treated withWelcome, a kind of traditional Chinese medicine compound which has the functions of replenishing qi toinvigorate the spleen, and of nourishing the liver and kidney and clearing away heat and toxic materials, thecontrol rats were treated with saline and tretinoin.RESULTS AND CONCLUSION The results showed Welcome could obviously block the mutagenic action ofMNNG and prevent the occurrence of gastric mucosal dysplasia of rats.

  • 兔急性脑梗死介入治疗动物模型的建立

    作者:董伟;王文辉;孙鹏飞;王世杰;周怀琪;郭顺林

    AIM: To establish a model of cerebral infarction in order to study the interventional treatment.METHODS: An improved 3.0F SP Cobra catheter was introduced to the internal carotid artery by puncturing the femoral artery. After internal carotid arteriography thrombus was injected to embolize its MCA. 3 hours later, clinic observe and computed tomography was examined to analyze results.RESULTS: Clinic observation confirmed that the rabbit had some nerve defect symptoms and CT exam proved cerebral infarction.CONCLUSION: This technique is convenient for application and the model can meet the standard of study of clinical interventional treatment.

  • 作者:

    Objective: To establish the device and model of motorcyclist ejection injury.Methods: Based on our laboratory devices, a motorcy-clist ejection injury simulation system was developed.A total of 18 pigs were approved by the local animal experi-mentation and ethics committee to serve as the motorcy-clist substitutes.In this ejection motion, the animal rode freely at the motor driver seat and was straightly acceler-ated by means of our custom motorcyclist ejection injury simulation system.When it was speeded up to the preset velocity (v=30, 40 or 50 kin/h) at the preset position, the animal was ejected forward.Pathological and dynamic analy-ses were conducted, accompanied with the high-speed photograph, acceleration/velocity signal test, gross obser-vation and light microscope examination as well as the ab-breviated injury score-injury severity score (AIS-ISS) scale.Results: The high-speed photograph indicated that during the ejection procedure the motorcycle was first ar-rested and decelerated suddenly, and then the motorcycle driver was ejected forward, accompanied with the rotation motion in the air.Finally, the head, shoulder and thorax of the ejected animal impacted directly on the hard ground.Varying degrees of injury focusing on the liver, heart, lung and spleen were found.There existed a significant positive, correlation between ISS and the ejection velocity of the motorcycle drivers (ISS=16.7+2.9 for 30 kin/h, 25.0±0.0 for 40 km/h and 37.3a=1.0 for 50 kin/h), The detailed injury char-acteristics were as follows: for the mildly injured animals, there were interlobar gaps or leaf gaps and lobar surface blood coagulation blocks in the liver, and mild lung hemorrhage; for the severely injured animals, there were liver comminuted laceration, moderate lung hemorrhage and heart injury.Animals suffering from the most severe injuries died half an hour later.Conclusion: The new injury model stated in this paper has a high stability and good repeatability, and is likely to be helpful to deeply investigate the injury mechanisms and protection countermeasures of motorcyclist ejection injury.

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