lasiocarpine/neoplasms

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Peroxisome-associated enzymes and serum lipids in tumour-bearing rats treated with peroxisome-proliferating agents.

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Xenobiotic induction of liver peroxisomes is associated with hypolipidemia. To test the involvement of the peroxisome proliferation with the hypolipidemia, male rats were inoculated in the groin with five different tumors: an aflatoxin-induced hepatoma, a lasiocarpine-induced hepatoma, an

Transplantation of normal hepatocytes modulates the development of chronic liver lesions induced by a pyrrolizidine alkaloid, lasiocarpine.

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Lasiocarpine (LC), a pyrrolizidine alkaloid, is able to induce a series of chronic and progressive lesions in rat liver, including a long-lasting block in the cell cycle, the appearance of enlarged hepatocytes (megalocytosis), fibrosis, cirrhosis and malignant neoplasma. In this study the effect of

Statistical analysis of a carcinogen mixture experiment. I. Liver carcinogens.

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This paper describes factorial experiments designed to determine whether 2 liver carcinogens act synergistically to produce liver cancers in Fischer 344 rats. Four hepatocarcinogens, cycad flour, lasiocarpine (CAS: 303-34-4), aflatoxin B1 (CAS: 1162-65-8), and dipentylnitrosamine (CAS: 13256-06-9),

Hepatotoxic Pyrrolizidine Alkaloids Induce DNA Damage Response in Rat Liver in a 28-day Feeding Study

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Pyrrolizidine alkaloids (PA) are secondary plant metabolites that occur as food and feed contaminants. Acute and subacute PA poisoning can lead to severe liver damage in humans and animals, comprising liver pain, hepatomegaly and the development of ascites due to occlusion of the hepatic sinusoids

Metabolism, genotoxicity, and carcinogenicity of comfrey.

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Comfrey has been consumed by humans as a vegetable and a tea and used as an herbal medicine for more than 2000 years. Comfrey, however, produces hepatotoxicity in livestock and humans and carcinogenicity in experimental animals. Comfrey contains as many as 14 pyrrolizidine alkaloids (PA), including

Risk assessment for pyrrolizidine alkaloids detected in (herbal) teas and plant food supplements.

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Pyrrolizidine alkaloids (PAs) are plant metabolites present in some botanical preparations, with especially 1,2-unsaturated PAs being of concern because they are genotoxic carcinogens. This study presents an overview of tumour data on PAs and points of departure (PODs) derived from them,

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