Attention deficit hyperactivity disorder (ADHD) in children is one of the commonest psychological and behavioral disorders during childhood, which is a common behavioral disturbance in children, with its morbidity rate the highest in school-age children. It has become a hot topic among scholars how the occurrence and the development of ADHD can be prevented and controlled effectively to reduce its harm to individuals, families and societies. At present, the prevention and control measures of ADHD are mainly the combination of behavioral intervention and medication. The priority is given to western medicine, whose short-term curative effect is obvious but whose efficacy and safety of long-term intervention are poor. The therapeutic effect of traditional Chinese medicine is significant, which has no side effects and low.recurrence rate and is not addictive. Mongolian medicine is an important part of Chinese medicine, which has the characteristics of less dosage and good curative effect, etc.. Mongolian Milkvetch Root can strengthen the body's immune function, protect liver, induce diuresis, prevent aging, reduce stress and lower blood pressure, whose mechanism of action and effect of prevention and control are the focus of this research. In this research, The effective components of Mongolian Milkvetch Root will be extracted and analyzed; Rat models which stimulate the.occurrence and the development of ADHD will be established; the effect of prevention and control and mechanism of Mongolian Milkvetch Root will be discussed; the effective components of Mongolian Milkvetch Root will be determined and more efficacy of Mongolian Milkvetch Root will be found. In this way, Mongolian Milkvetch Root can be made to prevent and control disease.
儿童注意缺陷多动障碍(ADHD),是儿童期常见的心理行为障碍之一,在学龄儿童精神障碍中的患病率居于首位。如何有效预防和控制ADHD的发生发展,减少其对个人-家庭-社会的危害,已成为众多学者关注的热点问题。目前ADHD的防治措施主要是行为干预和药物治疗相结合。药物治疗以西药为主,其短期疗效明显,长期干预的有效性和安全性较差;中国传统医药疗效肯定,未发现明显毒副反应,反跳少,无成瘾性形成。蒙医药是祖国医药学的重要组成部分,在诊治疾病中具有药量少、疗效好等特点。蒙古黄芪具有增强机体免疫功能、保肝、利尿、抗衰老、抗应激、降压等作用,其对ADHD的作用机制及防控效果是本研究重点。本研究将萃取、分析蒙古黄芪的有效成分,建立模拟ADHD发生发展的大鼠模型,探讨蒙古黄芪对儿童注意缺陷多动障碍的预防控制效果及作用机制,明确其有效作用成分,发掘蒙古黄芪的更多功效,使其服务于疾病的预防控制。
注意缺陷多动障碍(把英文写上,简称ADHD)是儿童时期常见的精神发育障碍性疾病,本项目研究采用内蒙地区较为有特色的中药材——蒙古黄芪,作为干预药物,探讨其对ADHD防治方面发挥作用的有效成分,并模拟儿童不良环境下导致的ADHD的情形,研究黄芪对铅污染导致的ADHD是否有保护作用,为儿童注意缺陷多动障碍的治疗和预防提供实验依据。课题组首先进行黄芪有效成分的提取;其次进行黄芪的毒理学评价和ADHD大鼠模型的建立,作为药物治疗和干预实验的基础;再进行蒙古黄芪有效成分对SHR大鼠的作用效果及机制研究,以SHR大鼠的多动焦虑、认知能力的改善程度,尼式体的形态,神经递质及Calcyon/IP3/CaM 的水平,BDNF、TH、TrkB、DAT蛋白及mRNA的含量变化为观测指标,通过与临床上传统治疗ADHD的中西药物(静灵口服液和哌甲酯)比较,发现蒙古黄芪的有效成分对ADHD大鼠具有一定的治疗作用,作用机制研究发现对 ADHD 多巴胺通路起作用的主要是蒙古黄芪皂苷和蒙古黄芪黄酮;最后进行蒙古黄芪有效成分对铅染毒大鼠的干预效果及机制研究。行为学检测结果和铅含量检测结果显示模型组与对照组有差异(P<0.05),模型组较对照组学习记忆下降,自主活动增加,静止时间减少(134.97±16.51s,30.90±5.09s),运动时间增加(165.10±16.54s,269.13±5.05s),运动距离增加(44716.55±6434.52mm,59337.79±8756.74mm),模型组骨铅和血铅含量较对照组明显升高(0.317±0.508,4.450±1.562;0.292±0.030,6.644±1.898)(p<0.05)说明铅造模成功。使用尼氏染色和TUNEL检测神经元损伤情况,RT-PCR和Western blot检测前额叶、海马calcyon,c-fos,cam,fosb,IP3蛋白的表达量,结果显示模型组蛋白表达升高,各药物干预组均有不同程度的下调,表明蒙古黄芪中的皂苷、多糖、黄酮都可以不同程度地抑制calcyon,c-fos,cam,fosb,IP3蛋白的表达,从而达到预防ADHD发生的效果。通过本项目研究表明:蒙古黄芪的有效成分在ADHD的发生发展中具有一定的防治效果,如何有效开发和利用传统中草药在疾病预防中的作用任重而道远。
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数据更新时间:2023-05-31
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