The paper had analyzed the necessity and feasibility for the protection and utilization of urban ecologically sensitive areas, proposed planning urban ecologically sensitive areas reasonably and combining ecological p...The paper had analyzed the necessity and feasibility for the protection and utilization of urban ecologically sensitive areas, proposed planning urban ecologically sensitive areas reasonably and combining ecological protection with development construction. Guiding the healthy and ordered development of urban spaces was the key part and important approach to realize ecological cities. The guiding thought for development construction of ecological cities had been discussed, which was conducting laddered development according to the location and coverage of urban ecologically sensitive areas and protection grades of these sensitive areas. Then, it had proposed four kinds of protection and construction modes, which were tourism leisure green lands, relevant expositions, industrial areas and new city groups, and which had been analyzed by combining with successful cases, so as to provide feasible win-win development strategies of ecology and economy for the planning of urban ecologically sensitive areas in the future.展开更多
目的观察加巴喷丁对神经病理性疼痛(neuropathic pain,NP)诱发的大鼠焦虑样行为和杏仁体基底外侧核(basolateral nucleus of the amygdale,BLA)N-甲基-D-天门冬氨酸(N-Methyl-DAspartate,NMDA)受体2B亚基(NR2B)表达的影响。方...目的观察加巴喷丁对神经病理性疼痛(neuropathic pain,NP)诱发的大鼠焦虑样行为和杏仁体基底外侧核(basolateral nucleus of the amygdale,BLA)N-甲基-D-天门冬氨酸(N-Methyl-DAspartate,NMDA)受体2B亚基(NR2B)表达的影响。方法选择30只健康的3月龄雄性Wistar大鼠,体重250~280g,随机均分为假手术组(S组)、神经病理性疼痛模型组(NP组)、加巴喷丁组(G组)。神经病理性疼痛模型采用右侧坐骨神经慢性压迫损伤(chronic constriction injury,CCI)的方法制备。G组于CCI后3d开始腹腔注射加巴喷丁100mg/kg,每天一次。分别于术后3、7、10和14d测右侧后爪机械缩足阈值(mechanical withdrawal threshold,MWT)和热缩足潜伏期(thermal withdrawal latency,TWL)。术后第14天,通过高架十字迷宫测试神经病理性疼痛对大鼠情绪的影响,计算开放臂进入次数百分比和开放臂停留时间百分比,然后取大鼠BLA组织用RT-PCR、Western blot和免疫荧光方法检测NR2BmRNA和蛋白表达。结果与术前1d比较,术后各时点NP组MWT明显减少、TWL明显缩短(P〈0.05),而术后3dG组MWT明显减少、TWL明显缩短(P〈0.05)。与NP组比较,术后7、10和14dG组MWT明显增加、TWL明显延长(P〈0.05),术后第14天S组和G组的开放臂进入次数百分比和开放臂停留时间百分比明显升高(P〈0.05),术后第14天BLA区S组和G组NR2BmRNA相对吸光度明显减少、NR2B蛋白表达明显降低(P〈0.05),而S组和G组平均相对荧光密度值明显下降(P〈0.05)。结论加巴喷丁具有治疗神经病理性疼痛作用可反转其导致的焦虑样反应并使杏仁体的NR2B表达下调。展开更多
文摘The paper had analyzed the necessity and feasibility for the protection and utilization of urban ecologically sensitive areas, proposed planning urban ecologically sensitive areas reasonably and combining ecological protection with development construction. Guiding the healthy and ordered development of urban spaces was the key part and important approach to realize ecological cities. The guiding thought for development construction of ecological cities had been discussed, which was conducting laddered development according to the location and coverage of urban ecologically sensitive areas and protection grades of these sensitive areas. Then, it had proposed four kinds of protection and construction modes, which were tourism leisure green lands, relevant expositions, industrial areas and new city groups, and which had been analyzed by combining with successful cases, so as to provide feasible win-win development strategies of ecology and economy for the planning of urban ecologically sensitive areas in the future.