title: The levels of kerosene components in biological samples after repeated dermal exposure to kerosene in rats.
abstract: The current study was experimentally investigated using rats whether or not kerosene components are accumulated from daily repeated dermal exposure. Rats received daily 1h-exposure to kerosene for 5 days (5K), daily 1h-exposure for 4 days and left for 1 day (4KL), a single 1h-exposure (1K), a single 1h-exposure and left for 1 day (1KL), or a single 1h-exposure, sacrificed and left dead for 1 day (1KLD). Kerosene components, trimethylbenzenes (TMBs) and aliphatic hydrocarbons (AHCs) in blood and tissues were determined by GC-MS. In blood, almost the same concentrations of TMBs were detected in the rats sacrificed immediately after exposure (5K, 1K and 1KLD), and only trace levels were detected in the rats sacrificed 1 day after exposure (4 and 1KL). Almost the same levels of AHCs in blood were detected among groups except for the rats sacrificed 1 day after a single exposure (1KL), in which AHCs were slightly lower. These results suggest that (1) AHCs tend to be accumulated from daily exposure, while TMBs do not, (2) the proportions of detected kerosene components in blood can be an indicator of whether the last exposure occurred just before death or not, (3) the kerosene levels last at least 1 day without blood circulation.
authors.affiliation: Department of Legal Medicine, Shimane University School of Medicine, Shimane 693-8501, Japan.
authors.forename: Junko
authors.initials: J
authors.lastname: Fujihara
authors.forename: Yoko
authors.initials: Y
authors.lastname: Hieda
authors.forename: Yoshio
authors.initials: Y
authors.lastname: Tsujino
authors.forename: Yuying
authors.initials: Y
authors.lastname: Xue
authors.forename: Koji
authors.initials: K
authors.lastname: Takayama
authors.forename: Kojiro
authors.initials: K
authors.lastname: Kimura
authors.forename: Satoshi
authors.initials: S
authors.lastname: Dekio
mesh_terms: D000273:Adipose Tissue / Q000378:metabolism; D000279:Administration, Cutaneous; D000818:Animals; D001921:Brain / Q000378:metabolism; D004334:Drug Administration Schedule; D005554:Forensic Medicine; D008401:Gas Chromatography-Mass Spectrometry; D007648:Kerosene / Q000032:analysis*; D007668:Kidney / Q000378:metabolism; D008099:Liver / Q000378:metabolism; D008297:Male; D051381:Rats; D017207:Rats, Sprague-Dawley; D012867:Skin / Q000473:pathology; D014018:Tissue Distribution
chemical_list: D007648:Kerosene