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PredicateObject
rdf:type
lifeskim:mentions
pubmed:dateCreated
2005-11-9
pubmed:abstractText
Serum PTH (7-84) is accumulated in patients with secondary hyperparathyroidism. It is also known that serum calcium (Ca) increases the generation of N-terminally truncated forms of parathyroid hormone (PTH). In this study, we examined whether accumulation of PTH (7-84) fraction is a parathyroid glandular origin or not by using primary cultured parathyroid cells from patients with primary and secondary hyperparathyroidism. The Bio-PTH/I-PTH ratio, indicating the ratio of PTH (1-84) to the sum of (1-84) PTH and N-terminally truncated fragment, was suppressed by increase in extracellular Ca2+ concentration for both cultured parathyroid cells prepared from parathyroid adenomas and uremia-associated secondary hyperparathyroidism. There is no difference between the ratios in primary and secondary hyperparathyroidism. These findings suggest that N-terminal truncation is regulated by extracellular Ca2+ concentration in parathyroid cells, but accumulation of PTH (7-84) fragments in patients with secondary hyperparathyroidism is mainly caused by uremia.
pubmed:commentsCorrections
pubmed:language
jpn
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
0917-5857
pubmed:author
pubmed:issnType
Print
pubmed:volume
15 Suppl 1
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
98-100; discussion 100-1
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2005
pubmed:articleTitle
[Effect of calcium on N-terminal truncation of PTH in human parathyroid cells].
pubmed:affiliation
Department of Metabolism, Endocrinology and Molecular Medicine, Osaka City University Graduate School of Medicine.
pubmed:publicationType
Journal Article, English Abstract