Influence of moderate food restriction on calcium metabolism in pregnant rats

Vaquero, M. Pilar; Navarro, M. L. Martínez

doi:10.1051/rnd:19930303

Cited by 1 publication

(1 citation statement)

References 14 publications

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“…During the first balance period, growth and bone calcification were very intensive. Calcium concentration in newborn rat bone tissue is approximately 1.9 mg/ g (Vaquero and Navarro, 1993), while it is about 8-9 mg/g in 32-35-day-old rats (Aguirre, 1996), such as those investigated in this balance period in our study. In addition, SO animals displayed deficient food intake.…”

Section: Calcium Balancementioning

confidence: 55%

Calcium and phosphorus bioavailability in rats consuming oil from either raw sardines or sardines fried in olive oil Biodisponibilidad de calcio y fósforo en ratas alimentadas con grasa de sardina cruda o frita con aceite de oliva

Pérez-Granados¹,

Vaquero²,

Navarro³

2000

Food sci. technol. int.

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Three diets were prepared containing 8% olive oil (OO), fresh sardine ( Clupea pilchardus) oil (SO), and oil from sardines fried in olive oil (FSO), respectively. After in vitro digestion, soluble (dialyzed and nondialyzed) and insoluble Ca and P fractions were determined. In vitro Ca availability tended to be higher with SO, and even more so with FSO, than with OO, while that of P increased only slightly with FSO. Growing rats consumed the diets for 28 days. Food intake and body weight increased with FSO more than with OO, but decreased markedly with SO, due to an imbalance in the n-3/n-6 fatty acid ratio. Absorption efficiencies of Ca and P were higher with SO than with the other diets during days 5-12. Because urinary Ca excretion was also greater with SO, apparent retention of both Ca and P was lower with this diet. With SO, carcass content of Ca and P was low but their concentrations were high. Apparent retention of these minerals and their carcass content were similar or higher with FSO than with OO. Therefore, although availability of Ca and P from raw and fried sardine oil diets was sufficient in vitro, consumption of raw sardine oil as the only dietary fat produced changes in calcium and phosphorus bioavailability, an effect of sardine oil which disappeared after frying in olive oil.

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Section: Calcium Balancementioning

confidence: 55%