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缺氧探针常见问题解答

发布者:biolead 发布时间:2019-10-19 分享到:

常见问题解答(FAO):

1.  Hypoxyprobe-1 探针如何溶解?

Pimonidazole HCl 是弱碱性盐酸盐,水溶性非常好,建议溶解于116mg/ml 的中性生理盐水。

2.  Pimonidazole HCl免疫剂量是多少?

探针与低氧组织结合程度取决于探针的硝基被还原率以及组织与探针的结合度。(exposure = concentration x time)。硝基被还原率很难预测,但是结合度可以测定。以下数据统计了:探针的免疫剂量(MW 290.7)。对于常规的小动物大小比较均一的,例如:小鼠或大鼠,我们推荐:探针用量:60 mg/kg。从30 mg/kg to 400 mg/kg在小鼠和大鼠都有用到,在此范围内的探针用量,不会由于血流效应而导致毒性或氧量的改变。除非大于100mg/kg以上的注射量小鼠后肢,需要注意。 对于体型较大个体,注射剂量依据个体的基础表面积而定。对于人样本,推荐剂量为:0.5 gm/m2,狗样本:0.28 gm/m2

3.  Pimonidazole HCl 探针是否能够渗透进入低氧大脑组织或脑肿瘤组织?

  Pimonidazole HCl可以自由渗透进入脑以及脑肿瘤组织。

4.  探针注射后,多久可以进行收获组织?

对于人体组织的一些研究表明,收获组织需要在免疫后15-24小时后检查。探针在血浆中的半衰期是5小时,因此16-24小时相当于3-5个探针半衰期循环。也就是说:在组织检查时:大概有1/8 到1/32 的探针仍存在,冷固定后,这样减少了非特异性染色,且低背景。

另外关于人类肿瘤研究表明,活组织检查应该在免疫后,1.5-4小时,然后组织及时转到液氮固定。这种方法背景也较低。

通过研究的一些文献,可以对实验有个指导。小鼠血浆中的探针半衰期在0.25hour.这种情况下,采取1-2小时收获组织然后采取快速固定方法,可有效的消除背景。

产品订购信息: 

英文名称 货号 规格 产品描述
Hypoxyprobe Kit HP1 100/200/1000Kit Pimonidazole /Mouse Mab
Hypoxyprobe Kit HP2 100/200/1000Kit Pimonidazole/FITC-Mab/anti-FITC HRP
Hypoxyprobe Kit HP3 100/200/1000Kit Pimonidazole/Rabbit antisera
Hypoxyprobe Kit HP4 100/200/1000Kit CCI-103F/Rabbit antisera
Hypoxyprobe Kit HP5 100/200/1000Kit Pimonidazole/CCI-103F/Rabbit  antisera
Hypoxyprobe Kit HP6 100/200/1000Kit Pimonidazole/ Mouse FITC-Mab
Hypoxyprobe Kit HP7 100/200/1000Kit Pimonidazole/Mouse DylightTM549-Mab
Pimonidazole Hydrochloride HP 100/200/500/1000mg Pimonidazole
Hypoxyprobe F6 CCI-103F 250/500/1000mg CCI-103F

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