Traffic intersections are incredibly dangerous for drivers and pedestrians. Statistics from both Canada and the U.S. show a high number of fatalities and serious injuries related to crashes at intersections. In Canada...Traffic intersections are incredibly dangerous for drivers and pedestrians. Statistics from both Canada and the U.S. show a high number of fatalities and serious injuries related to crashes at intersections. In Canada, during 2019, the National Collision Database shows that 28% of traffic fatalities and 42% of serious injuries occurred at intersections. Likewise, the U.S. National Highway Traffic Administration (NHTSA) found that about 40% of the estimated 5,811,000 accidents in the U.S. during the year studied were intersection-related crashes. In fact, a major survey by the car insurance industry found that nearly 85% of drivers could not identify the correct action to take when approaching a yellow traffic light at an intersection. One major reason for these accidents is the “yellow light dilemma,” the ambiguous situation where a driver should stop or proceed forward when unexpectedly faced with a yellow light. This situation is even further exacerbated by the tendency of aggressive drivers to inappropriately speed up on the yellow just to get through the traffic light. A survey of Canadian drivers conducted by the Traffic Injury Research Foundation found that 9% of drivers admitted to speeding up to get through a traffic light. Another reason for these accidents is the increased danger of making a left-hand turn on yellow. According to the National Highway Traffic Safety Association (NHTSA), left turns occur in approximately 22.2% of collisions—as opposed to just 1.2% for right turns. Moreover, a study by CNN found left turns are three times as likely to kill pedestrians than right turns. The reason left turns are so much more likely to cause an accident is because they take a driver against traffic and in the path of oncoming cars. Additionally, most of these left turns occur at the driver’s discretion—as opposed to the distressingly brief left-hand arrow at busy intersections. Drive Safe Now proposes a workable solution for reducing the number of accidents occurring during a yellow light at intersections. We believe this fairly simple solution will save lives, prevent injuries, reduce damage to public and private property, and decrease insurance costs.展开更多
目的中药红花具有悠久的神经保护应用历史,近代研究发现,红花黄色素也具有保护神经作用,但其发挥作用的机制尚未清楚。因此,研究红花黄色素对H 2 O 2诱导的星形胶质细胞氧化应激和凋亡的影响并探讨其机制。方法运用H 2 O 2诱导建立星形...目的中药红花具有悠久的神经保护应用历史,近代研究发现,红花黄色素也具有保护神经作用,但其发挥作用的机制尚未清楚。因此,研究红花黄色素对H 2 O 2诱导的星形胶质细胞氧化应激和凋亡的影响并探讨其机制。方法运用H 2 O 2诱导建立星形胶质细胞HAs的损伤模型;用红花黄色素(10、50、100 mg/L)治疗损伤细胞;用ELISA检测细胞的LDH、SOD、GSH-PX、MDA含量;MTT法检测细胞活性;Western blot检测细胞中Bax、Bcl-2、Caspase-3、p-p38、T-p38MAPK的蛋白表达;流式细胞术检测细胞的凋亡率。结果成功构建H 2 O 2诱导的星形胶质细胞HAs损伤模型;与H 2 O 2组相比,红花黄色素(10、50、100 mg/L)治疗组细胞中LDH、MDA均显著降低,SOD、GSH-PX均显著升高,细胞活性均显著降低,细胞凋亡率均显著降低,Bcl-2蛋白表达显著升高,Bax、Caspase-3、p-p38蛋白表达均显著降低(P<0.05),且此种影响随与红花黄色素呈浓度依赖性。结论红花黄色素可保护H 2 O 2诱导建立星形胶质细胞损伤,将可为红花黄色素的临床应用提供支持。展开更多
文摘Traffic intersections are incredibly dangerous for drivers and pedestrians. Statistics from both Canada and the U.S. show a high number of fatalities and serious injuries related to crashes at intersections. In Canada, during 2019, the National Collision Database shows that 28% of traffic fatalities and 42% of serious injuries occurred at intersections. Likewise, the U.S. National Highway Traffic Administration (NHTSA) found that about 40% of the estimated 5,811,000 accidents in the U.S. during the year studied were intersection-related crashes. In fact, a major survey by the car insurance industry found that nearly 85% of drivers could not identify the correct action to take when approaching a yellow traffic light at an intersection. One major reason for these accidents is the “yellow light dilemma,” the ambiguous situation where a driver should stop or proceed forward when unexpectedly faced with a yellow light. This situation is even further exacerbated by the tendency of aggressive drivers to inappropriately speed up on the yellow just to get through the traffic light. A survey of Canadian drivers conducted by the Traffic Injury Research Foundation found that 9% of drivers admitted to speeding up to get through a traffic light. Another reason for these accidents is the increased danger of making a left-hand turn on yellow. According to the National Highway Traffic Safety Association (NHTSA), left turns occur in approximately 22.2% of collisions—as opposed to just 1.2% for right turns. Moreover, a study by CNN found left turns are three times as likely to kill pedestrians than right turns. The reason left turns are so much more likely to cause an accident is because they take a driver against traffic and in the path of oncoming cars. Additionally, most of these left turns occur at the driver’s discretion—as opposed to the distressingly brief left-hand arrow at busy intersections. Drive Safe Now proposes a workable solution for reducing the number of accidents occurring during a yellow light at intersections. We believe this fairly simple solution will save lives, prevent injuries, reduce damage to public and private property, and decrease insurance costs.
文摘目的中药红花具有悠久的神经保护应用历史,近代研究发现,红花黄色素也具有保护神经作用,但其发挥作用的机制尚未清楚。因此,研究红花黄色素对H 2 O 2诱导的星形胶质细胞氧化应激和凋亡的影响并探讨其机制。方法运用H 2 O 2诱导建立星形胶质细胞HAs的损伤模型;用红花黄色素(10、50、100 mg/L)治疗损伤细胞;用ELISA检测细胞的LDH、SOD、GSH-PX、MDA含量;MTT法检测细胞活性;Western blot检测细胞中Bax、Bcl-2、Caspase-3、p-p38、T-p38MAPK的蛋白表达;流式细胞术检测细胞的凋亡率。结果成功构建H 2 O 2诱导的星形胶质细胞HAs损伤模型;与H 2 O 2组相比,红花黄色素(10、50、100 mg/L)治疗组细胞中LDH、MDA均显著降低,SOD、GSH-PX均显著升高,细胞活性均显著降低,细胞凋亡率均显著降低,Bcl-2蛋白表达显著升高,Bax、Caspase-3、p-p38蛋白表达均显著降低(P<0.05),且此种影响随与红花黄色素呈浓度依赖性。结论红花黄色素可保护H 2 O 2诱导建立星形胶质细胞损伤,将可为红花黄色素的临床应用提供支持。
