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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
3
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pubmed:dateCreated |
1983-8-11
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pubmed:abstractText |
The calcium and phosphorus concentrations in foetal tissue or the placental transfer of 45Ca and 32P, or both, were studied in fifty-five control or 1 alpha-hydroxycholecalciferol (1 alpha-(OH)D3)-treated (0.1 micrograms/kg body-weight per d for 12 d) ewes between 77 and 140 d of gestation. Treatment resulted in a significant increase in the concentration of Ca and P in foetal tissues at all stages of gestation except at 140 d when, it is suggested, foetal mineralization may approach a maximum value. This increase in Ca and P concentration in foetal tissues was associated with an increased placental transfer of Ca, though at 111 and 120 d gestation this increase was not significant. P transfer, which was only measured at 140 d gestation, was also significantly higher in treated animals. The concentrations of Ca and P in both maternal and foetal plasma were increased significantly by the 1 alpha-(OH)D3 treatment. Whereas the concentration of Ca in the plasma of foetuses was always greater than in their dams, the concentration of plasma P in treated animals, unlike controls, was lower in foetuses than dams. This suggests that the increased placental transfer of P, unlike that of Ca, may be a passive rather than an active process.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
May
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pubmed:issn |
0007-1145
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
49
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
475-80
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pubmed:dateRevised |
2003-11-14
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pubmed:meshHeading |
pubmed-meshheading:6860626-Animals,
pubmed-meshheading:6860626-Calcium,
pubmed-meshheading:6860626-Female,
pubmed-meshheading:6860626-Fetal Blood,
pubmed-meshheading:6860626-Fetus,
pubmed-meshheading:6860626-Hydroxycholecalciferols,
pubmed-meshheading:6860626-Maternal-Fetal Exchange,
pubmed-meshheading:6860626-Phosphorus,
pubmed-meshheading:6860626-Placenta,
pubmed-meshheading:6860626-Pregnancy,
pubmed-meshheading:6860626-Sheep
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pubmed:year |
1983
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pubmed:articleTitle |
The effect of 1 alpha-hydroxycholecalciferol on the placental transfer of calcium and phosphate in sheep.
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pubmed:publicationType |
Journal Article
|