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LBIS(R) 小鼠卵清蛋白特异性免疫球蛋白E(OVA-IgE)ELISA试剂盒

来源:作者:人气:-发表时间:2024-12-26 09:47:00【
LBIS® 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
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300 ng/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
0716256365846071.jpg
● 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, 200 U/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
精度测试(组内变异)
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
重复性测试(组间变异)
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
加标回收测试
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
稀释直线性测试
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
参考文献
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产品列表
产品编号 产品名称 产品规格
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

 

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