Cited by 72Pancreatic function and diabetesDiabetes Management and ResearchDiabetes, Cardiovascular Risks, and Lipoproteins

Metabolic clearance of insulin in man

Genuth, Saul M·1972·Diabetes

Abstract

Metabolic clearance of insulin was measured, under circumstances of acutely and chronically altered endogenous plasma insulin, employing 1-131 bovine insulin (5 mc./mg., Abbott Laboratories) as tracer and the technic of constant infusion to equilibrium. Compared to normal subjects, clearance of radioiodinated insulin was unaffected by diabetes, was increased 25 per cent in obese subjects with hyperinsulinemia and did not change when their plasma insulin was reduced by seven days of fasting. Acute fourto fifteenfold elevation of endogenous insulin by glucose or tolbutamide injections to normal and obese subjects also failed to change clearance of radioiodinated insulin. These data support the assumption that alterations of plasma insulin in those circumstances largely reflect alterations in insulin secretion. However, in both normal and diabetic subjects, simultaneous clearances of unlabeled porcine insulin and radioiodinated insulin were also performed and disparate results obtained. Mean values were: unlabeled 861 ml./min. (Normals), 788 ml./min. (Diabetics) ; radioiodinated 227 ml./min. (Normals) ; 202 ml./min. (Diabetics). Ratio of unlabeled to radioiodinated clearance 3.8 (Normals), 4.1 (Diabetics). Because of this discrepancy, it is uncertain which clearance value affords the more accurate estimate of peripheral insulin delivery rate.

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Crossref · 10.2337/diab.21.10.1003

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Authors
Genuth, S. M.
Affiliations
Mount Sinai Hospital (US)
Corresponding author
Genuth, Saul M
Venue
Diabetes
Published
1972-10-01
Volume
21
Issue
10
Pages
1003-1012
ISSN
  • 0012-1797 (ISSN-L)
  • 1939-327X
OpenAlex
W2120227540
Cited by
72
References
0
Citations by year
2024: 1 · 2021: 1 · 2016: 1
FWCI
8.26
Type
journal article
Language
en
Open access
closed
Locations
  • Diabetes (publishedVersion)
  • PubMed (publishedVersion)
Funders
U.S. Public Health Service
Topics
  • Health Sciences › Medicine › Surgery › Pancreatic function and diabetes
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes Management and Research
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes, Cardiovascular Risks, and Lipoproteins
Keywords
insulin clearance, metabolic clearance, insulin secretion, diabetes mellitus, obesity, hyperinsulinemia, fasting, glucose stimulation, tolbutamide
MeSH terms
Adolescent, Adult, Aged, Animals, Body Surface Area, Body Weight, Cattle, Diabetes Mellitus, Fasting, Female, Glucose, Glucose Tolerance Test, Humans, Hyperinsulinism, Hyperthyroidism, Insulin, Iodine Radioisotopes, Islets of Langerhans, Male, Metabolic Clearance Rate, Middle Aged, Obesity, Swine, Tolbutamide

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