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Antilithiasic and hypocholesterolemic effects of diets containing autoclaved amylomaize starch in hamster

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Abstract

The prevention of cholelithiasis by dietary manipulation was investigated in hamsters receiving a fat-free lithogenic (L) diet or this diet in which sucrose was replaced by 12 (group AS12), 36 (group AS36), 48 (group AS48), or 72.5% (group AS72.5) of autoclaved amylomaize starch for seven weeks. All hamsters (6/6) had cholesterol gallstones in groups L and AS12, while only 3/6 hamsters in group AS36 had gallstones. None were present in groups AS48 and AS72.5. Excent in group AS12, biliary cholesterol level and lithogenic index, (LI) decreased significantly in hamsters receiving amylomaize starch. Plasma cholesterol concentration was reduced by 31 and 54%, respectively, in groups AS48 and AS72.5 as compared to group L. The concentration of esterified cholesterol in the liver was also reduced significantly in all groups receiving amylomaize starch. Hepatic cholesterogenesis was decreased by 74 and 65%, respectively, in groups AS48 and AS72.5 as compared to group L. The transformation of cholesterol to bile acids was increased in group AS72.5 (+152%) as compared to L, while fecal cholesterol excretion was strongly lowered (−31%). Amylomaize starch reduced the microbial transformation of cholesterol to coprosterol and epicoprosterol, and in group AS72.5 it decreased the degradation of cholic acid. Thus, this autoclaved amylomaize starch, which could be used in human nutrition, prevents cholelithiasis and lowers cholesterolemia.

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This investigation was supported by a C.R.E. grant awarded by INSERM and Caisse Régionale d'Assurance Maladie de l'Ile de France.

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Khallou, J., Riottot, M., Parquet, M. et al. Antilithiasic and hypocholesterolemic effects of diets containing autoclaved amylomaize starch in hamster. Digest Dis Sci 40, 2540–2547 (1995). https://doi.org/10.1007/BF02220439

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  • DOI: https://doi.org/10.1007/BF02220439

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