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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
5
|
| pubmed:dateCreated |
1995-12-7
|
| pubmed:abstractText |
Microalbuminuria in patients with essential hypertension is a marker of incipient glomerular dysfunction and clusters with lipid and hemodynamic abnormalities. Recent evidence has shown that hypertensive patients with microalbuminuria have a hyperinsulinemic response to oral glucose, suggesting the presence of insulin resistance. To directly test this possibility we studied insulin action in two accurately matched groups (n = 10 each) of hypertensive patients with or without microalbuminuria (14 +/- 2 versus 52 +/- 7 mg/24 h-1, mean of three 24-hour collections). In response to glucose ingestion microalbuminuric patients showed slight hyperglycemia (area under the curve, 928 +/- 43 versus 784 +/-19 nmol/L-1/2h-1, P < .02) and a marked hyperinsulinemia (26.8 +/- 3.3 versus 49.8 +/- 3.7 nmol/L-1/2h-1, P < 0.01). Basal arterial blood pressure, heart rate, and forearm blood flow were similar in the two groups and did not change significantly during a 2-hour euglycemic insulin clamp. Insulin-stimulated wholebody glucose uptake was 25% lower in microalbuminuric patients (33.5 +/- 2.5 versus 25.2 +/- 2.1 mumol/min-1/kg-1, P < .02). This difference was entirely due to a 40% reduction in glycogen synthesis (12.9 +/- 1.8 versus 21.3 +/- 3.2 mumol/min-1/kg-1, P < .05) as glucose oxidation was similarly stimulated in the two groups. In contrast there was no difference in the ability of insulin to suppress hepatic glucose production (by approximately 100% at the end of the clamp), to decrease fractional sodium and potassium excretions (by 35%), to lower circulating free fatty acids (by 80%), and to reduce plasma potassium concentrations (by 10%).(ABSTRACT TRUNCATED AT 250 WORDS)
|
| pubmed:language |
eng
|
| pubmed:journal | |
| pubmed:citationSubset |
IM
|
| pubmed:chemical | |
| pubmed:status |
MEDLINE
|
| pubmed:month |
Nov
|
| pubmed:issn |
0194-911X
|
| pubmed:author | |
| pubmed:issnType |
Print
|
| pubmed:volume |
26
|
| pubmed:owner |
NLM
|
| pubmed:authorsComplete |
Y
|
| pubmed:pagination |
789-95
|
| pubmed:dateRevised |
2011-11-17
|
| pubmed:meshHeading |
pubmed-meshheading:7591019-Adult,
pubmed-meshheading:7591019-Albuminuria,
pubmed-meshheading:7591019-Female,
pubmed-meshheading:7591019-Glucose Tolerance Test,
pubmed-meshheading:7591019-Hemodynamics,
pubmed-meshheading:7591019-Humans,
pubmed-meshheading:7591019-Hypertension,
pubmed-meshheading:7591019-Insulin,
pubmed-meshheading:7591019-Insulin Resistance,
pubmed-meshheading:7591019-Male,
pubmed-meshheading:7591019-Middle Aged
|
| pubmed:year |
1995
|
| pubmed:articleTitle |
Insulin resistance in microalbuminuric hypertension. Sites and mechanisms.
|
| pubmed:affiliation |
Nephrology Unit, Spedali Riuniti, Livorno, Italy.
|
| pubmed:publicationType |
Journal Article
|