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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
12
pubmed:dateCreated
1988-12-28
pubmed:abstractText
Despite the importance of disturbances in plasma volume in nephrotic patients, the only clinically accepted measurement of this value in common use is plasma renin activity. We assessed the usefulness of plasma vasopressin levels as an index of plasma volume in patients with idiopathic nephrotic syndrome. However, since 80% to 90% of arginine vasopressin circulates bound to platelets, we measured vasopressin levels in platelet-rich and platelet-poor plasma. The nephrotic patients (n = 19) had significantly higher vasopressin levels in platelet-poor and platelet-rich plasma compared with controls (3.2 +/- 0.6 vs 1.0 +/- 0.3 pg/mL, and 10.4 +/- 3.6 vs 3.3 +/- 0.6 pg/mL. respectively). The percent binding of vasopressin to platelets was reduced in nephrotic patients compared with controls (50.2% +/- 6% vs 70.4% +/- 2.9%). The values for platelet-poor vasopressin, but not platelet-rich vasopressin, correlated significantly with the plasma renin activity (r = .83). We conclude that in nephrotic patients, platelet-poor vasopressin levels correlate with plasma renin activity and may provide a useful measure of minute-to-minute vasopressin release in response to changes in plasma volume.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
0002-922X
pubmed:author
pubmed:issnType
Print
pubmed:volume
142
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1313-6
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1988
pubmed:articleTitle
Platelet vasopressin levels in childhood idiopathic nephrotic syndrome.
pubmed:affiliation
Department of Pediatrics, State University of New York, Stony Brook.
pubmed:publicationType
Journal Article