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Adaptation of biliary response to dietary olive oil and sunflower-seed oil in dogs

Published online by Cambridge University Press:  09 March 2007

M. C. Ballesta ,
M. Mañas ,
E. Martinez-Victoria ,
I. Seiquer ,
J. R. Huertas  and
F. J. Mataix
M. C. Ballesta
Affiliation:
Instituto de Nutrición y Technología de Alimentos and Departamento de Fisología, Facultad de Farmacia, Universidad de Granada, Granada, Spain
M. Mañas
Affiliation:
Instituto de Nutrición y Technología de Alimentos and Departamento de Fisología, Facultad de Farmacia, Universidad de Granada, Granada, Spain
E. Martinez-Victoria
Affiliation:
Instituto de Nutrición y Technología de Alimentos and Departamento de Fisología, Facultad de Farmacia, Universidad de Granada, Granada, Spain
I. Seiquer
Affiliation:
Instituto de Nutrición y Technología de Alimentos and Departamento de Fisología, Facultad de Farmacia, Universidad de Granada, Granada, Spain
J. R. Huertas
Affiliation:
Instituto de Nutrición y Technología de Alimentos and Departamento de Fisología, Facultad de Farmacia, Universidad de Granada, Granada, Spain
F. J. Mataix
Affiliation:
Instituto de Nutrición y Technología de Alimentos and Departamento de Fisología, Facultad de Farmacia, Universidad de Granada, Granada, Spain
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Abstract

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The effects of adaptation to dietary fat of different degrees of unsaturation (olive oil and sunflower oil) on bile secretion were studied in dogs at rest and after food intake. The animals were prepared with a bidirectional biliary cannula and a duodenal cannula to provide bile return. The two experimental groups were fed on diets containing 150 g fat/kg in the form of either olive oil (O) or sunflower-seed oil (S). The flow-rate under resting conditions and the patterns of response to food were similar in both experimental groups, although postprandial hypersection were significantly greater in volume and more prolonged in group O. No appreciable differences in concentration and output of biliary cholesterol or phospholipids were noted between the two groups. In contrast, the concentration and output of bile acids differed significantly both at rest and after food: concentration and output of bile acids were greater at rest in group S. However, after food intake, these responses were increased only in group O. The results suggest that the type of dietary fat affects biliary response to food, probably through differences in the contribution of the gall bladder in the two experimental groups.

Keywords

Dietary fatBiliary secretionDog
Type
Lipid Metabolism
Information
British Journal of Nutrition , Volume 68 , Issue 1 , July 1992 , pp. 175 - 182
Copyright
Copyright © The Nutrition Society 1992

References

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