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乙酰胆碱酯酶(AChEs)是将神经递质乙酰胆碱(ACh)水解为乙酸和胆碱的酶。AChE位于突触间隙并且可通过催化ACh的分解来终止突触传递,从而允许胆碱能神经元在激活后返回静息状态。 它还存在于红细胞、运动和感觉纤维、肌肉、神经以及中央和外周组织的膜中。AChE活性的变化可能是由于暴露于某些杀虫剂环境下导致的,这些杀虫剂起到胆碱酯酶抑制剂的作用。AChE抑制剂也可用于治疗某些疾病,例如痴呆症。
应用:
乙酰胆碱酯酶活性测定试剂盒已用于测定大鼠有机磷酸盐模型和脑组织匀浆中乙酰胆碱酯酶的活性 。
适用性:
本品适于检测血液、血清和血浆等多种生物样品中的乙酰胆碱酯酶。
原理:
乙酰胆碱酯酶能够催化乙酰胆碱水解为胆碱,胆碱与二硫对硝基苯甲酸反应生成5-巯基-硝基苯甲酸(TNB),产物在412 nm处具有特征吸收峰,通过吸光值变化即可表征乙酰胆碱酯酶的活性
注意事项:
①试剂二配制后有效期较短,为便于试验安排,附赠一瓶作为备用;
②测定过程中粗酶液和试剂二应置于冰上放置,以免变性和失活;
③若A测定大于1.0时,建议将粗酶液适当稀释后再进行测定,计算时相应修改;
Description:
Acetylcholinesterases (AChEs) are enzymes that hydrolyze the neurotransmitter acetylcholine (ACh) to acetate and choline. AChE is located at the synaptic cleft and functions to terminate synaptic transmission by catalyzing the breakdown of ACh allowing cholinergic neurons to return to a resting state after activation. It is also found in membranes of red blood cells, motor and sensory fibers, muscles, nerves and central and peripheral tissues. Changes in AChE activity may result from exposure to certain insecticides, which act as cholinesterase inhibitors. Inhibitors of AChE are also used to treat certain conditions such as dementia.Acetylcholinesterase activity assay kit has been used to determine the activity of acetylcholinesterase in a rat organophosphate model and in brain tissue homogenates.
Principle:
Acetylcholinesterase can catalyze the hydrolysis of acetylcholine to choline, and the reaction of choline with disulfide p-nitrobenzoic acid to produce 5-merhydryl-nitrobenzoic acid (TNB). The product has a characteristic absorption peak at 412 nm, and the activity of acetylcholinesterase can be characterized by the change of light absorption value
The Dilution Calculator
EquationConcentration (start)xVolume (start)= Concentration (final)× Volume (final)
This equation is commonly abbreviated as: C1V1 = C2V2
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| 批号(Lot Number) | 证书类型 | 货号 |
|---|---|---|
| 分析证书 | A486188 |