Abstract
A study was done of the possible association between the development of common bile-duct stones and the presence of worms in rats experimentally infected with Fasciola hepatica. A total of 157 rats were individually infected with 20 metacercariae, and another 40 animals served as controls. The rats were dissected at 100, 200, 300, and 400 days postinfection (p.i.). A significant association was observed between the observation of stones and the presence of F. hepatica adults. The global frequency of bile-duct lithiasis in the parasitized rats was 22%, with a significantly lower incidence being observed in the younger group (100 days p.i.). Different analytical techniques were used to determine the main stone components. Energy-dispersive X-ray microanalysis showed calcium to be the main component in all cases (82–94%). Scanning electron microscopy, nuclear magnetic resonance ([1H]- and [13C]-NMR), and mass spectrometry revealed the predominance of palmitic (C-16) and stearic (C-18) acid.
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Received: 17 December 1999 / Accepted: 23 December 1999
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Valero, M., Varea, M. & Marín, R. Fasciola hepatica: lithogenic capacity in experimentally infested rats and chemical determination of the main stone components. Parasitol Res 86, 558–562 (2000). https://doi.org/10.1007/s004360000201
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DOI: https://doi.org/10.1007/s004360000201