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作 者:韦姗姗[1,2] 陆雪萍 彭玲芳 屈会化[1,2] 孙晔[1,2] 王庆国[1,2]
机构地区:[1]北京中医药大学基础医学院,北京100029 [2]北京中医药大学"经典方剂的应用基础研究"创新团队,北京100029 [3]云南省药物研究所,昆明650111
出 处:《中国药房》2014年第25期2323-2325,共3页China Pharmacy
基 金:"973"计划资助项目(No.2011CB505100)
摘 要:目的:建立测定大鼠脑组织中的单胺类神经递质含量的方法。方法:采用高效液相色谱-电化学法,以2,5-二羟基苯甲酸为内标,测定大鼠大脑皮层、小脑、海马组织、下丘脑、嗅球中以去甲肾上腺素(NE)和5-羟色胺(5-HT)为代表的单胺类神经递质的含量。色谱柱为DIKMA C18,流动相为缓冲盐溶液(醋酸钠、庚烷磺酸钠、乙二胺四乙酸二钠和柠檬酸)-甲醇(梯度洗脱),流速为1.0ml/min,工作电压为+0.7V。结果:NE、5-HT的检测质量浓度线性范围分别为O.084-4.2μg/ml(r=0.9999)和0.005-0.25μg/ml(r=0.9991),平均加样回收率分别为98.85%(RSD=2.89%,n=3)和101.5%(RSD=2.41%,n=3),日内(n=5)和日间(n=3)RSD均不大于3%;NE在小脑中的含量最低[(0.343±0.14)mg/g],在下丘脑中含量最高[(3.062±1.51)mg/g];5-HT在小脑中的含量最低[(0.059±0.04)mg/g],在大脑皮层中含量最高[(0.383±0.21)mg/g]。结论:本方法灵敏、简便、快速,可用于大鼠脑组织中NE、5-HT含量的测定。OBJECTIVE: To establish a method for the content determination of monoamines neurotransmitter in cerebral tissues of rats. METHODS: Using 2,5-dihydroxybenzoic acid as intemal standard, HPLC-ECD was adopted to determine the contents of monoamines neurotransmitter as norepinephrine (NE) and 5-hydroxytryptamine (5-HT) in pallium, cerebellum, hippocampus, hypothalamus and apophysis mamillaris of rats. The determination was performed on DIKMA C18 column with mobile phase consisted of buffer salt (sodium acetate, sodium heptanesulfonate, ETAs, citric acid)-methanol (gradient elution) at the flow rate of 1.0 ml/min. The voltage of electrode was +0.7 V. RESULTS: The linear range of NE and 5-HT were 0.084-4.2μg/ml (r=0.999 9) and 0.005-0.25 μg/ml (r=0.999 1), respectively. The average recoveries were 98.85% (RSD=2.89%, n=3) and 101.5% (RSD= 2.41%, n=3), respectively. RSD of intra-day (n=5) and inter-day (n=3) were no more than 3%. Content of NE in cerebellum was the lowest [(0.343 ±0.14) mg/g], and content of it in hypothalamus was the highest [(3.062 ±1.51) mg/g]. Content of 5-HT in cerebellum was the lowest [(0.059 ±0.04) mg/g], and content of it in pallium was the highest [(0.383 ±0.21) mg/g]. CONCLUSIONS: The method is sensitive, simple and rapid, and can be used for the content determination of NE and 5-HT in cerebral tissue of rats.
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