title: Lack of significant modifying effect of arctiin on prostate carcinogenesis in probasin/SV40 T antigen transgenic rats.
abstract: Arctiin, a plant lignan that can be extracted from the Arctium lappa (burdock) seeds, is a possible environmental endocrine disruptor compounds and have been shown to influence sex hormone metabolism as well as protein synthesis, steroid biosynthesis. Modifying effects of arctiin on prostate carcinogenesis in probasin/SV 40 T antigen (Tag) transgenic (TG) rats were examined. A total of 64 male TG rats, 6 weeks old, were randomly divided to three experimental groups (soybean free Oriental MF diet with 0.1, 0.02, or 0.004% arctiin) and a control group (soybean free Oriental MF diet). Animals were killed at the end of week 18. Histopathological evaluation of prostate revealed that all the rats in any group developed adenocarcinoma in dorsolateral lobe of prostate, except two rats in 0.1% arctiin treated and one rat in 0.002% arctiin treated groups without prostate adenocarcinoma development. However, there were no definite treatment-related changes with statistical significance in all parameters for prostate carcinomas measured in this experiment. These results indicated that arctiin might not exert significant modifying effect on prostate carcinogenesis in SV 40 Tag TG rats at least under the present experiment.
authors.affiliation: Department of Onco-Pathology, Faculty of Medicine, Kagawa University, 1750-1 Ikenobe, Miki-cho, Kita-gun, Kagawa 761-0793, Japan.
authors.forename: Yu
authors.initials: Y
authors.lastname: Zeng
authors.forename: Masanao
authors.initials: M
authors.lastname: Yokohira
authors.forename: Hijiri
authors.initials: H
authors.lastname: Takeuchi
authors.forename: Kousuke
authors.initials: K
authors.lastname: Saoo
authors.forename: Keiko
authors.initials: K
authors.lastname: Yamakawa
authors.forename: Yoko
authors.initials: Y
authors.lastname: Matsuda
authors.forename: Kyoko
authors.initials: K
authors.lastname: Hosokawa
authors.forename: Jia-Qing
authors.initials: JQ
authors.lastname: Li
authors.forename: Mico
authors.initials: M
authors.lastname: Ikeda
authors.forename: Katsumi
authors.initials: K
authors.lastname: Imaida
mesh_terms: D000236:Adenoma / Q000503:physiopathology* / Q000662:veterinary; D000284:Administration, Oral; D000727:Androgen-Binding Protein / Q000235:genetics; D000821:Animal Feed; D000818:Animals; D030801:Animals, Genetically Modified; D000952:Antigens, Polyomavirus Transforming / Q000235:genetics; D002471:Cell Transformation, Neoplastic; D004365:Drugs, Chinese Herbal; D005663:Furans / Q000494:pharmacology*; D005960:Glucosides / Q000494:pharmacology*; D008297:Male; D011471:Prostatic Neoplasms / Q000503:physiopathology* / Q000662:veterinary; D011897:Random Allocation; D051381:Rats; D012639:Seeds
chemical_list: D000727:Androgen-Binding Protein; D000952:Antigens, Polyomavirus Transforming; D004365:Drugs, Chinese Herbal; D005663:Furans; D005960:Glucosides; C027519:probasin; C077992:arctiin