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An attempt to reproduce crystal-associated cholangitis in lambs in experimental dosing of sarsasapogenin or diosgenin alone and in combination with sporidesmin

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No liver damage occurred in a group of 21 lambs dosed intraruminally with up to 9 g of sarsasapogenin or diosgenin daily for 10 consecutive days. In contrast, seven out of 15 lambs dosed with 0.1 mg of sporidesmin/kg liveweight in combination with sarsasapogenin and three out of six lambs dosed with sporidesmin in combination with diosgenin developed liver lesions. These were typical of those induced by sporidesmin. One lamb dosed with sporidesmin in combination with 9 g of diosgenin developed a crystal-associated cholangitis typical of Panicurn intoxication and alveld. No sapogenins were detected in urine by gas chromatography-mass spectrometry. The results suggest that orally administered sarsasapogenin and diosgenin are either not hepatotoxic per se or are too poorly absorbed to elicit a toxic response. The results provide only weak evidence that sporidesmin may be involved in the aetiology of Panicurn intoxication.

Keywords: Photosensitivity; Poisoning - plant; Sheep; Sporidesmin

Document Type: Research Article

Publication date: 1993-12-01

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