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xiaoxin2809新蟲 (初入文壇)
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[求助]
無奈求助關(guān)于毒理實(shí)驗(yàn)中的數(shù)據(jù)含義
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本人在做的一種輔料中有一種雜質(zhì)算是有藥理毒性的,所以在定它的限量時遇到了問題,此限量不能太高,但定得太低了也沒必要,我覺得定的高度要和此物質(zhì)的藥理活性或毒性有關(guān),所以就拼命找它的毒理學(xué)實(shí)驗(yàn)數(shù)據(jù),找到的那些資料的描寫都是此物質(zhì)“a very weak carcinogen”或與某某物質(zhì)比它的毒性很低,但這并不能直接說明人體或動物對它能承受的劑量是多少,還有一些貌似是毒理學(xué)實(shí)驗(yàn)的表述如下: XXX was mutagenic in the Ames test, increasing the number of revertants to 4 to 9 times the control values in Salmonella typhimurium TA98, TA100, TA1535 and TA1538. The maximum effects were obtained with concentrations between 20 and 500 μg per plate . It could be shown in strain TA1535 that the mutagenicity was markedly reduced by the addition of S9 mix . XXX also yielded positive results in the cell transformation test in vitro (Syrian hamster kidney cells, human lung fibroblasts or human liver cells) and in the degranulation of the rough endoplasmic reticulum of isolated rat liver cells , in the sebaceous gland test on mouse skin and in the tetrazolium reduction test on mouse skin . (The relevance of these latter three tests is not clear.) In the host-mediated assay (mouse) XXX (106 mg/kg i.m. or 138 mg/kg p.o.) proved to be clearly mutagenic in the S. typhimurium strains TA1530, TA1535 and TA1538 . 這些在我看來都是一些實(shí)驗(yàn)數(shù)據(jù),并不能明確的說明此物質(zhì)的毒性在什么水平,有哪位大蝦能幫忙解釋一下這些數(shù)據(jù)的確切含義嗎? 另外,到目前為止我所找到關(guān)于此物質(zhì)描述中有確切分類的是這句話 XXX is classified in Section III B of the MAK List 有誰了解MAK和BAT嗎?能簡單介紹一下或說明Section III B屬于什么安全范圍嗎? 或者說我到哪里提問能得到更全面的回答! 謝謝!! |
找到一些相關(guān)的精華帖子,希望有用哦~
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