Linked Life Data

3864857

Source:http://linkedlifedata.com/resource/pubmed/id/3864857

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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
1986-1-22
pubmed:abstractText
The purpose of the study was to clarify the mechanism(s) of glucocorticoid-induced hypertension. Hypertension was induced in rats by single i.m. injection of methylprednisolone (MP) 20 mg/kg. In normal Wistar rats, systolic blood pressure (SBP) increased by 30 mmHg from days 2 to 10 after MP. Urinary sodium excretion increased transiently and sodium balance was negative. Plasma volume (PV; ml/100 g body weight) increased on day 5, but was unchanged on day 2 after MP, at a time when SBP had already increased. In rats with chronic renal failure (CRF) and low sodium intake, SBP increased more than in control rats (48 versus 22 mmHg on day 10). Hypertension was not accompanied by a significant drop in urinary excretion of prostaglandin E2 (PGE2; measured by radio-immunoassay). In normal MP-injected rats, PGE2 excretion decreased slightly and then increased; in CRF rats, basal PGE2 excretion was too low to evaluate the effect of MP. In homozygous Brattleboro rats lacking antidiuretic hormone (ADH), MP increased SBP by 28 mmHg (day 10). Similar changes were obtained in heterozygous Brattleboro rats. The changes in PV were identical to those found in Wistar rats. We conclude that increase in PV, change in PGE2 and vasopressin do not play a key role in MP hypertension. Direct effect of glucocorticoid on vascular receptors is likely to be involved in this model.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
0263-6352
pubmed:author
pubmed:issnType
Print
pubmed:volume
3
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
461-7
pubmed:dateRevised
2003-11-14
pubmed:meshHeading
pubmed:year
1985
pubmed:articleTitle
Methylprednisolone-induced hypertension in the rat: evidence against the role of plasma volume changes, vasopressin and renal prostaglandin E2.
pubmed:publicationType
Journal Article