小鼠卵清蛋白特异性免疫球蛋白E(OVA-IgE)ELISA试剂盒
Lbis OVA-IgE Mouse
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小鼠卵清蛋白特异性免疫球蛋白E(OVA-IgE) ELISA试剂盒
IgE(Immunoglobulin E,免疫球蛋白E)是第五个被发现的免疫球蛋白,由5个结构域(VH、CHε 1~4)构成的两个Hε链和两个L链中组成的IgE,其分子量约190000,电泳实验中向γ1域移动。IgE的代谢半衰期约3天,正常人血清中的IgE浓度非常低,约300ng/mL。但在寄生虫感染和枯草热时浓度会升高。与过敏性相关的IgE被称作反应素。因接触过敏原导致反应素含量升高,反应素会在Fc域与存在于皮肤、呼吸道、消化脏器中嗜碱性粒细胞和肥大细胞的FcεR1受体结合,引起细胞过敏。在结合过敏原后细胞发生脱粒现象,组胺,五羟色胺,蛋白酶,肝素,趋化因子,前列腺素,白三烯等被投放,经过支气管收缩和黏膜水肿,分泌亢进,从而诱发支气管哮喘,部分荨麻疹,过敏性鼻炎,过敏性反应等I型过敏性反应。
本试剂盒是以OVA(卵清蛋白)作为免疫的抗原,在一个简化的反应系统中通过测定鼠抗OVA- IgE抗体值来进行小鼠免疫系统检测的试剂盒。
◆特点
● 测定时间短(总反应时间:1小时50分钟)。
● 微量样本即可测定。
● 使用无害的防腐剂。
● 全部试剂为溶液即用类型。
● 高测定精度和高重复性。
● 操作简便,无需进行特殊前处理。
◆试剂盒组成
组成品 |
状态 |
包装 |
OVA包被96孔板(干燥板) |
清洗后使用 |
96 wells(8×12)/1个 |
标准溶液(Anti OVA-IgE:1,200U/mL)(单抗) |
稀释后使用 |
100 μL/1瓶 |
缓冲液 |
直接使用 |
60 mL/1瓶 |
生物素结合抗小鼠IgE抗体(单抗) |
稀释后使用 |
200 μL/1瓶 |
过氧化物酶·抗生素结合物 |
稀释后使用 |
200 μL/1瓶 |
显色液(TMB) |
直接使用 |
12 mL/1瓶 |
终止液(1M H2SO4)※小心轻放 |
直接使用 |
12 mL/1瓶 |
浓缩清洗液(10×) |
稀释后使用 |
100 mL/1瓶 |
孔板密封膜 |
3个 |
|
产品说明书 |
1本 |
◆样本信息
● 小鼠血清·血浆
● 10 μL/well(稀释样本)
※ 样本需要用试剂盒附带的缓冲液调至标准曲线范围内。
※ 样本必须稀释10倍以上。
◆测定范围
1.88~120 U/mL(标准曲线范围)
(本试剂盒中1 U/mL定义为抗原结合常数(Ka)为2.0×108 M-1的抗体1.3 ng/mL)
◆实验数据
精密度实验(实验内变化)
样本 |
A |
B |
1 |
70.7 |
19.1 |
2 |
71.0 |
18.7 |
3 |
77.1 |
19.6 |
4 |
74.3 |
19.7 |
5 |
72.9 |
18.9 |
Mean |
73.2 |
19.2 |
SD |
2.6 |
0.42 |
CV(%) |
3.6 |
2.2 |
单位:U/mL
重复性实验(实验间变化)
测定日/样本 |
C |
D |
E |
0天 |
60.0 |
15.0 |
3.75 |
1天 |
59.1 |
15.0 |
3.75 |
2天 |
58.1 |
14.7 |
3.65 |
3天 |
63.6 |
16.0 |
3.48 |
Mean |
60.2 |
15.2 |
3.66 |
SD |
2.4 |
0.57 |
0.13 |
CV(%) |
4.0 |
3.7 |
3.4 |
单位:U/mL
添加回收实验
样本F
添加量 |
实测值 |
回收量 |
回收率(%) |
0.00 |
6.93 |
— |
— |
5.35 |
12.2 |
5.27 |
98.5 |
10.7 |
17.8 |
10.9 |
102 |
17.1 |
25.1 |
18.2 |
106 |
单位:U/mL,n=3
样本G
添加量 |
实测值 |
回收量 |
回收率(%) |
0.00 |
40.5 |
— |
— |
30.8 |
70.4 |
29.5 |
95.8 |
35.9 |
77.1 |
36.6 |
102 |
53.9 |
94.9 |
54.4 |
101 |
单位:U/mL,n=3
稀释直线性实验
2个血清样本连续用稀释缓冲液稀释3个梯度测定结果,直线回归值R2=0.9987~0.9999
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产品编号 | 产品名称 | 产品规格 | 产品等级 | 产品价格 |
639-07651 | (AKRIE-030)小鼠卵清蛋白特异性免疫球蛋白E(OVA-IgE) ELISA试剂盒 Lbis OVA-IgE Mouse |
96 tests | – | – |