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One-year chronic toxicity of madder color in F344 rats--induction of preneoplastic/neoplastic lesions in the kidney and liver. 2008

Kaoru Inoue, and Makoto Shibutani, and Naoya Masutomi, and Kazuhiro Toyoda, and Hironori Takagi, and Miwa Takahashi, and Hitoshi Fujimoto, and Masao Hirose, and Akiyoshi Nishikawa
Division of Pathology, National Institute of Health Sciences, 1-18-1 Kamiyoga, Setagaya-ku, Tokyo 158-8501, Japan. k-inoue@nihs.go.jp

To evaluate chronic toxicity of madder color (MC), a natural food colorant extracted from the roots of Rubia tinctorum L., F344 rats were fed diet containing 0%, 0.2%, 1.0% or 5.0% MC for 53 weeks. Hematological changes including anemia and serum biochemical alterations indicating hepatotoxicity were demonstrated at 5.0% in both sexes. Relative weights of the liver were significantly increased from 1.0% in both sexes, and those of the kidney were significantly increased from 1.0% in males and from 0.2% in females. Histopathologically, atypical renal tubule hyperplasias were increased at 1.0% or higher in both sexes in association with increase of cell proliferative activity in the tubules. A renal cell adenoma was observed in a male rat receiving 5.0% MC. In addition, glutathione S-transferase placental form-positive liver cell foci were significantly increased at 5.0% in both sexes. These results indicate that MC has chronic toxicity targeting kidney, liver and blood cells. Moreover, the results strongly suggest that MC may have the carcinogenic potential in the kidney and the liver.

UI MeSH Term Description Entries
D007668 Kidney Body organ that filters blood for the secretion of URINE and that regulates ion concentrations. Kidneys
D007680 Kidney Neoplasms Tumors or cancers of the KIDNEY. Cancer of Kidney,Kidney Cancer,Renal Cancer,Cancer of the Kidney,Neoplasms, Kidney,Renal Neoplasms,Cancer, Kidney,Cancer, Renal,Cancers, Kidney,Cancers, Renal,Kidney Cancers,Kidney Neoplasm,Neoplasm, Kidney,Neoplasm, Renal,Neoplasms, Renal,Renal Cancers,Renal Neoplasm
D008113 Liver Neoplasms Tumors or cancer of the LIVER. Cancer of Liver,Hepatic Cancer,Liver Cancer,Cancer of the Liver,Cancer, Hepatocellular,Hepatic Neoplasms,Hepatocellular Cancer,Neoplasms, Hepatic,Neoplasms, Liver,Cancer, Hepatic,Cancer, Liver,Cancers, Hepatic,Cancers, Hepatocellular,Cancers, Liver,Hepatic Cancers,Hepatic Neoplasm,Hepatocellular Cancers,Liver Cancers,Liver Neoplasm,Neoplasm, Hepatic,Neoplasm, Liver
D008297 Male Males
D010936 Plant Extracts Concentrated pharmaceutical preparations of plants obtained by removing active constituents with a suitable solvent, which is evaporated away, and adjusting the residue to a prescribed standard. Herbal Medicines,Plant Extract,Extract, Plant,Extracts, Plant,Medicines, Herbal
D011230 Precancerous Conditions Pathological conditions that tend eventually to become malignant. Preneoplastic Conditions,Condition, Preneoplastic,Conditions, Preneoplastic,Preneoplastic Condition,Condition, Precancerous,Conditions, Precancerous,Precancerous Condition
D011916 Rats, Inbred F344 An inbred strain of rat that is used for general BIOMEDICAL RESEARCH purposes. Fischer Rats,Rats, Inbred CDF,Rats, Inbred Fischer 344,Rats, F344,Rats, Inbred Fisher 344,CDF Rat, Inbred,CDF Rats, Inbred,F344 Rat,F344 Rat, Inbred,F344 Rats,F344 Rats, Inbred,Inbred CDF Rat,Inbred CDF Rats,Inbred F344 Rat,Inbred F344 Rats,Rat, F344,Rat, Inbred CDF,Rat, Inbred F344,Rats, Fischer
D004305 Dose-Response Relationship, Drug The relationship between the dose of an administered drug and the response of the organism to the drug. Dose Response Relationship, Drug,Dose-Response Relationships, Drug,Drug Dose-Response Relationship,Drug Dose-Response Relationships,Relationship, Drug Dose-Response,Relationships, Drug Dose-Response
D004334 Drug Administration Schedule Time schedule for administration of a drug in order to achieve optimum effectiveness and convenience. Administration Schedule, Drug,Administration Schedules, Drug,Drug Administration Schedules,Schedule, Drug Administration,Schedules, Drug Administration
D005260 Female Females

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