Høstmark J, Farsund T
Anticancer Res. 1982 May-Jun;2(3):145-50.
The epithelium in the normal urinary bladder contains cells with diploid to octoploid DNA-content. The carcinogen dibutylnitrosamine (DBN), given subcutaneously in repeated doses causes a loss of polyploidy prior to cancer development. In this study the changes in polyploidy caused by DBN was followed by use of flow cytometry. 13-cis-retinoic acid did not prevent this loss of polyploidy, and did not affect the polyploidy in the normal urothelium.
正常膀胱的上皮含有DNA含量为二倍体至八倍体的细胞。致癌物质二丁基亚硝胺(DBN)经皮下反复给药,会在癌症发生之前导致多倍性丧失。在本研究中,通过流式细胞术追踪了DBN引起的多倍性变化。13-顺式维甲酸不能阻止这种多倍性丧失,且不影响正常尿路上皮的多倍性。