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超高效液相色谱-串联质谱法测定小鼠纹状体中多巴胺及其代谢物的含量
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作者 梁金良 陈晓彤 胡坤华 《理化检验(化学分册)》 CSCD 北大核心 2023年第12期1381-1387,共7页
提出了超高效液相色谱-串联质谱法同时测定小鼠纹状体中多巴胺(DA)及其代谢物高原儿茶酸(DOPAC)与高香草酸(HVA)含量的方法。取小鼠纹状体约10 mg,用200μL 2%(体积分数)甲酸溶液提取、离心。取上清液80μL,加入40μg·L^(-1)异丙... 提出了超高效液相色谱-串联质谱法同时测定小鼠纹状体中多巴胺(DA)及其代谢物高原儿茶酸(DOPAC)与高香草酸(HVA)含量的方法。取小鼠纹状体约10 mg,用200μL 2%(体积分数)甲酸溶液提取、离心。取上清液80μL,加入40μg·L^(-1)异丙肾上腺素(内标)溶液10μL和含0.1%(体积分数,下同)乙酸的甲醇溶液10μL,涡旋混匀,再加入100μL甲醇,涡旋、离心。上清液中DA及其代谢物在Gemini NX-C_(18)色谱柱上分离,以不同体积比的0.1%乙酸溶液和含0.1%乙酸的甲醇溶液混合液为流动相进行梯度洗脱,质谱分析采用电喷雾离子源正、负离子模式,选择反应监测(SRM)模式扫描。结果表明,3种目标物在7.00 min内能完成测定。DA、DOPAC和HVA标准曲线的线性范围分别为0.05~100,0.5~1000,0.25~500μg·L^(-1),检出限分别为0.015,0.150,0.075μg·L^(-1)。按照标准加入法进行回收试验,回收率为84.4%~117%,日内精密度和日间精密度试验所得测定值的相对标准偏差均小于15%。质控样品在自动进样器中保存8 h、4℃保存24 h以及-80℃保存30 d前后3种目标物测定值的相对误差绝对值不大于20%,说明样品稳定性良好。 展开更多
关键词 超高效液相色谱-串联质谱法(UHPLC-MS/MS) 多巴胺及其代谢物 帕金森病 小鼠纹状体
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红景天苷对MPTP-帕金森病小鼠模型自噬通路影响的实验研究 被引量:11
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作者 王松海 许鹏 +3 位作者 康超 陈捷 杨晨光 谢燕华 《陕西医学杂志》 CAS 2020年第10期1215-1218,共4页
目的:探讨红景天苷(Sal)对帕金森病(PD)小鼠黑质纹状体(SNpc)自噬通路相关蛋白表达的影响及其可能机制。方法:爬杆实验检测小鼠的行为学变化;免疫荧光组织化学法检测黑质纹状体TH阳性神经元数目的变化;Western blot检测自噬相关蛋白的... 目的:探讨红景天苷(Sal)对帕金森病(PD)小鼠黑质纹状体(SNpc)自噬通路相关蛋白表达的影响及其可能机制。方法:爬杆实验检测小鼠的行为学变化;免疫荧光组织化学法检测黑质纹状体TH阳性神经元数目的变化;Western blot检测自噬相关蛋白的表达情况。结果:模型组小鼠T turn及T LA时间明显延长(P<0.01),与模型组比较,治疗组T turn及T LA时间明显缩短(P<0.05);模型组黑质纹状体中TH阳性神经元的数目明显减少(P<0.01),Sal干预后小鼠TH阳性神经元有所恢复(P<0.05);1-甲基-4-苯基-1,2,3,6-四氢吡啶(MPTP)处理后黑质纹状体中LC-3β、Beclin1表达增多,PINK1、Parkin表达减少,而Sal预处理可以明显改善这些变化(P<0.05)。结论:Sal对PD小鼠DA能神经元具有保护作用,而其机制可能与抑制黑质纹状体中自噬通路相关蛋白的表达有关。 展开更多
关键词 红景天苷 帕金森病 小鼠黑质纹状体 自噬通路相关蛋白
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Depressive-like behavior in mice recently recovered from motor disorders after 3-nitropropionic acid intoxication
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作者 李晓敏 诸秉根 +5 位作者 马莎 周蔚 魏征 郑羽翔 赵旭东 朱容申 《Neuroscience Bulletin》 SCIE CAS CSCD 2008年第4期225-230,共6页
Objective Striatum may be involved in depressive disorders according to the neuroimaging analysis and clinical data. However, no animal model at present supported the possible role of striatum in the pathogenesis of d... Objective Striatum may be involved in depressive disorders according to the neuroimaging analysis and clinical data. However, no animal model at present supported the possible role of striatum in the pathogenesis of depression. In the present study, we have investigated the depressive-like behavior in mice recently intoxicated with 3-nitropropionic acid (3- NP), a widely known toxin that selectively damages the striatum in the brain. Methods Mouse model was made with subacute systemic 3-NP treatment, and the depressive-like behavior was measured using the duration of immobility during forced swimming test (FST). Results When the mice at day 15 post-intoxication just totally recovered from motor deficits, the duration of immobility in FST was significantly longer than that in controls. The depressive-like behavior was not due to the fatigue or general sickness following 3-NP intoxication and could be reversed by the antidepressant, desipramine hydrochloride. In two successive FST in 24 h interval, the depressive-like behavior could be observed again in subsequent FST (at day 16 post-intoxication), and the mice presented a normal "learned helplessness". Conclusion A novel depression animal model could be established in mice during the initial period of recovery from 3-NP intoxication. The depression-like behavior might occur independently without involvement of cognitive defects, and the striatal lesions may underlie the depression-like behavior attributable to 3-NP intoxication. 展开更多
关键词 3-nitropropionic acid forced swimming test DEPRESSION STRIATUM MICE
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