Abstract
Plasma and subcutaneous colloid osmotic pressure, transcapillary escape rate of albumin, plasma volume and extracellular fluid volume were measured in 10 long-term Type 1 (insulin-dependent) diabetic patients without clinical nephropathy. Interstitial colloid osmotic pressure was reduced compared with normal subjects (12.9 +/- 3.0 versus 15.8 +/- 2.7 mmHg, p less than 0.05) and the transcapillary colloid osmotic gradient increased (17.0 +/- 2.4 versus 12.8 +/- 2.7 mmHg, p less than 0.01). Plasma volume was in the normal range and interstitial fluid volume increased by approximately 21% compared with normal subjects (p less than 0.01). Transcapillary escape rate of albumin was significantly increased compared with normal subjects (8.9 +/- 1.9 versus 5.1 +/- 1.6% h, p less than 0.01). A negative correlation was found between the transcapillary colloid osmotic gradient and interstitial fluid volume (r = 0.6, 0.01 less than p less than 0.05). These results suggest that the increased small vessel permeability in long-term diabetes leads to wash-out of interstitial proteins and the resulting increased transcapillary colloid osmotic gradient tends to preserve the plasma volume and to limit the tendency to increased interstitial fluid volume.
MeSH Terms
Adult
Blood Glucose/metabolism
Blood Volume
Capillary Permeability
Colloids
Creatinine/metabolism
Diabetes Mellitus, Type 1/complications,physiopathology
Diabetic Angiopathies/etiology,physiopathology
Extracellular Space/metabolism
Female
Humans
Male
Middle Aged
Osmotic Pressure
Proteinuria
Serum Albumin/metabolism
Chemicals
Blood Glucose
Colloids
Serum Albumin
Creatinine
Authors & Affiliations
3 authors, click to expand affiliations / ORCID
Fauchald P
Norseth J
Jervell J
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27 references, click to expand
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