文章基本信息

标题：Detection of Novel Red-Colored, Ultra-Weak Chemiluminescence from Carcinogens
本地全文：下载
作者：Kazumi OSADA ; Yuji FURUKAWA ; Michio KOMAI 等
期刊名称：Journal of Clinical Biochemistry and Nutrition
印刷版ISSN：0912-0009
电子版ISSN：1880-5086
出版年度：1993
卷号：14
期号：1
页码：1-6
DOI：10.3164/jcbn.14.1
出版社：The Society for Free Radical Research Japan
摘要：We previously reported that benzo-( a )-pyrene (BP) and methylcholanthrene (MC) emitted blue-colored ultra-weak chemiluminescence (CL) during the metabolism in a post mitochondrial fraction system. In this present study, we used a single-photon counting system (SPC) equipped with a photomultiplier having a spectral response in the red-color region to detect the CL from BP, MC, and 3-nitrofluoranthene (3-NF). As a result, we discovered that a novel red-region CL was emitted immediately after initiation of the metabolic reaction in this system. In the case of BP and MC, each had a double phase CL emission; that is, they initially emitted red CL, which was detected by the SPC, and thereafter, blue CL, which was detected with an OX-71 chemiluminescence analyzer. However, in the case of 3-NF, although strong red CL emission was recorded, no blue-colored CL appeared to be emitted. The emissions of red CL were increased in systems in which D₂O was added (final concentration of 66%), and decreased by the addition of β-carotene or α-tocopherol. This result suggests that the main cause of CL was singlet oxygen.
关键词：benzo-(a)-pyrene;methylcholanthrene;3-nitrofluoranthene;chemiluminescence;singlet oxygen