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Is there a big difference between domestic and imported DMSO used as a solvent for drug administration in mice in animal experiments?

Lab Techniques
Asked by:彭检测 2026-04-09 Views 224 4 answers
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T
Tom227 2026-08-27
换DMSO来源或批次,建议做小规模替代验证。同一化合物分别用新旧DMSO配成母液,观察溶解澄清度、放置后有无析出、颜色变化,再设溶剂对照组给小鼠,看精神和行为。不要直接换供应商就上正式实验;保留同批次DMSO和COA,出现异常时容易追溯。若5% DMSO本身刺激大,还可以考虑降低DMSO比例或换用PEG400、环糊精等助溶剂。
C
CellTech4908 2026-07-03
国产和进口DMSO如果都标注细胞培养级/低内毒素,主要差别通常落在批次一致性和杂质控制上。国产大瓶若只是分析纯或工业级,可能内毒素、水分、还原性杂质高,不适合直接做动物给药。灌胃虽然经过胃肠道,但DMSO会促进黏膜吸收,杂质也会被带入。建议优先选低内毒素/细胞培养级,要求供应商提供COA,对比内毒素、水分、蒸发残渣和重金属指标,而不是只看价格。
韩
韩敏9302 2026-09-11
动物实验尤其是静脉、腹腔或长期给药,建议选低内毒素/细胞培养级;灌胃可以稍放宽,但不能拿工业级直接当溶剂。内毒素会引起小鼠发热、活动减少,甚至影响药效判断。若预算有限,可以先买国产细胞培养级小包装做溶剂对照组预试验,观察小鼠精神状态、体重、采食量和血液指标,确认无异常后再上正式批次。
何
何芳燕 2026-07-16
比价不能只看每瓶总价。若实验总消耗只有20~50mL,买进口100mL小瓶通常比国产500mL大瓶更划算,因为DMSO吸潮和开封后氧化会降低后续使用质量。若实验室用量大、有手套箱和分装条件,可选择国产大瓶,到货后分装成小管并标记批次。比价时把过滤、分装、干燥保存和可能浪费的量都算进去。
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