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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
2 Pt 1
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pubmed:dateCreated |
1992-3-31
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pubmed:abstractText |
The requirement of parathyroid tissue for bone mineral loss during lactation was investigated. Lactating rats parathyroidectomized (PTX) at day 2 of lactation and consuming a 2% calcium diet are hypercalcemic and hypophosphatemic at day 13 of lactation. The high-calcium diet supports normal growth of pups nursing PTX mothers. PTX lactating rats mobilize bone mineral to the same extent as euparathyroid lactating rats consuming the same diet. Non-lactating PTX rats lose no bone mineral over a similar time period, indicating lactation-specific bone mineral mobilization in the absence of parathyroid tissue. PTX rats were verified to have physiologically insignificant amounts of parathyroid tissue, as evidenced by severe hypocalcemia and/or death in each rat after a shift from a 2% calcium to a 0.02% calcium diet. These results conclusively demonstrate that lactation-associated bone mineral mobilization does not require parathyroid hormone or parathyroid tissue.
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pubmed:grant | |
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 |
Feb
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pubmed:issn |
0002-9513
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
262
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
E230-3
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pubmed:dateRevised |
2007-11-14
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pubmed:meshHeading |
pubmed-meshheading:1539650-Animals,
pubmed-meshheading:1539650-Animals, Newborn,
pubmed-meshheading:1539650-Body Weight,
pubmed-meshheading:1539650-Bone Density,
pubmed-meshheading:1539650-Calcium,
pubmed-meshheading:1539650-Female,
pubmed-meshheading:1539650-Femur,
pubmed-meshheading:1539650-Lactation,
pubmed-meshheading:1539650-Organ Size,
pubmed-meshheading:1539650-Osmolar Concentration,
pubmed-meshheading:1539650-Parathyroid Hormone,
pubmed-meshheading:1539650-Parathyroidectomy,
pubmed-meshheading:1539650-Phosphorus,
pubmed-meshheading:1539650-Pregnancy,
pubmed-meshheading:1539650-Rats,
pubmed-meshheading:1539650-Rats, Inbred Strains
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pubmed:year |
1992
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pubmed:articleTitle |
Bone mineral loss during lactation occurs in absence of parathyroid tissue.
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pubmed:affiliation |
Department of Biochemistry, University of Wisconsin-Madison, College of Agricultural and Life Sciences 53706.
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pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, P.H.S.,
Research Support, U.S. Gov't, Non-P.H.S.,
Research Support, Non-U.S. Gov't
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