Abnormalities of carbohydrate and lipid metabolism in Dahl rats.
Journal Article (Journal Article)
Plasma glucose, insulin, and triglyceride concentration, blood pressure, and insulin action on isolated adipocytes were determined in weight-matched Sprague-Dawley, Dahl salt-resistant, and Dahl salt-sensitive rats. Blood pressure and plasma glucose concentrations were not significantly different in the three groups. However, Dahl salt-sensitive rats had significantly higher plasma insulin (39 +/- 2 microunits/ml) and triglyceride (213 +/- 11 mg/dl) concentrations than did Sprague-Dawley rats (27 +/- 2 microunits/ml and 101 +/- 6 mg/dl, respectively). Values for insulin (34 +/- 4 microunits/ml) and triglyceride (159 +/- 11 mg/dl) were intermediate in Dahl salt-resistant rats. In contrast, maximal insulin-stimulated glucose transport was significantly lower in adipocytes isolated from Dahl salt-sensitive as compared with Sprague-Dawley rats (400 +/- 16 versus 523 +/- 14 fl/cell/sec), with Dahl salt-resistant rats again having intermediate values. However, the ability of insulin to maximally inhibit catecholamine-stimulated lipolysis was similar in all three groups, averaging approximately 20% of the activity present in the absence of insulin. All of these differences were seen when the rats were eating conventional chow and did not change in Dahl rats after 2 weeks of an 8% NaCl diet. On the other hand, the predicted rise in blood pressure took place in Dahl salt-sensitive rats, increasing from 147 +/- 4 to 181 +/- 6 mm Hg.(ABSTRACT TRUNCATED AT 250 WORDS)
Full Text
Duke Authors
Cited Authors
- Reaven, GM; Twersky, J; Chang, H
Published Date
- November 1991
Published In
Volume / Issue
- 18 / 5
Start / End Page
- 630 - 635
PubMed ID
- 1937666
International Standard Serial Number (ISSN)
- 0194-911X
Digital Object Identifier (DOI)
- 10.1161/01.hyp.18.5.630
Language
- eng
Conference Location
- United States