rdf:type |
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lifeskim:mentions |
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pubmed:issue |
4
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pubmed:dateCreated |
1999-3-18
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pubmed:abstractText |
Steroid hormones may enter cells by diffusion through the plasma membrane. However, we demonstrate here that some steroid hormones are taken up by receptor-mediated endocytosis of steroid-carrier complexes. We show that 25-(OH) vitamin D3 in complex with its plasma carrier, the vitamin D-binding protein, is filtered through the glomerulus and reabsorbed in the proximal tubules by the endocytic receptor megalin. Endocytosis is required to preserve 25-(OH) vitamin D3 and to deliver to the cells the precursor for generation of 1,25-(OH)2 vitamin D3, a regulator of the calcium metabolism. Megalin-/- mice are unable to retrieve the steroid from the glomerular filtrate and develop vitamin D deficiency and bone disease.
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pubmed:grant |
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pubmed:language |
eng
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pubmed:journal |
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pubmed:citationSubset |
IM
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pubmed:chemical |
http://linkedlifedata.com/resource/pubmed/chemical/CYP27A1 protein, human,
http://linkedlifedata.com/resource/pubmed/chemical/Cyp27a1 protein, mouse,
http://linkedlifedata.com/resource/pubmed/chemical/Cytochrome P-450 CYP27A1,
http://linkedlifedata.com/resource/pubmed/chemical/Heymann Nephritis Antigenic Complex,
http://linkedlifedata.com/resource/pubmed/chemical/Iodine Radioisotopes,
http://linkedlifedata.com/resource/pubmed/chemical/Membrane Glycoproteins,
http://linkedlifedata.com/resource/pubmed/chemical/Receptors, LDL,
http://linkedlifedata.com/resource/pubmed/chemical/Steroid Hydroxylases,
http://linkedlifedata.com/resource/pubmed/chemical/Vitamin D,
http://linkedlifedata.com/resource/pubmed/chemical/Vitamin D-Binding Protein
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pubmed:status |
MEDLINE
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pubmed:month |
Feb
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pubmed:issn |
0092-8674
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pubmed:author |
|
pubmed:issnType |
Print
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pubmed:day |
19
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pubmed:volume |
96
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
507-15
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pubmed:dateRevised |
2007-11-14
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pubmed:meshHeading |
pubmed-meshheading:10052453-Animals,
pubmed-meshheading:10052453-Bone Development,
pubmed-meshheading:10052453-Cytochrome P-450 CYP27A1,
pubmed-meshheading:10052453-Endocytosis,
pubmed-meshheading:10052453-Heymann Nephritis Antigenic Complex,
pubmed-meshheading:10052453-Humans,
pubmed-meshheading:10052453-Iodine Radioisotopes,
pubmed-meshheading:10052453-Kidney Tubules, Proximal,
pubmed-meshheading:10052453-Membrane Glycoproteins,
pubmed-meshheading:10052453-Mice,
pubmed-meshheading:10052453-Mice, Knockout,
pubmed-meshheading:10052453-Microscopy, Electron,
pubmed-meshheading:10052453-Receptors, LDL,
pubmed-meshheading:10052453-Steroid Hydroxylases,
pubmed-meshheading:10052453-Vitamin D,
pubmed-meshheading:10052453-Vitamin D Deficiency,
pubmed-meshheading:10052453-Vitamin D-Binding Protein
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pubmed:year |
1999
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pubmed:articleTitle |
An endocytic pathway essential for renal uptake and activation of the steroid 25-(OH) vitamin D3.
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pubmed:affiliation |
Max-Delbrueck-Center for Molecular Medicine, Berlin, Germany.
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pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, P.H.S.,
Research Support, Non-U.S. Gov't
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