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Pathophysiological aspects of edema formation in diabetic nephropathy.

Abstract：

:The present study was undertaken to evaluate some pathophysiological mechanisms of edema formation in diabetic nephropathy. Sixty-three subjects were investigated: 9 normal subjects (I), 9 normoalbuminuric Type 1 (insulin-dependent) diabetic patients (II), 15 microalbuminuric Type 1 diabetic patients (III), 16 Type 1 diabetic patients with nephropathy without edema (IV), and 14 Type 1 diabetic patients with nephropathy and edema (V). Plasma volume (125I-albumin), glomerular filtration rate and extracellular fluid volume (51Cr-EDTA) were measured. Colloid osmotic pressure and albumin concentration were measured in plasma and in subcutaneous interstitial fluid (suction blister technique). The ratio between plasma volume and interstitial fluid volume was reduced in patients with edema compared with group 1 (P less than 0.05). The interstitial colloid osmotic pressure (mm Hg) was significantly reduced (P less than 0.05) in group V compared with the other groups (V: 4.3 +/- 1.1, I: 7.9 +/- 1.7, II: 7.5 +/- 1.8, III: 6.6 +/- 1.5, IV: 6.6 +/- 1.1), but the transcapillary colloid osmotic gradient in patients with edema was comparable with the remaining subjects. The ratio between interstitial and plasma albumin concentration was significantly reduced in group V compared with groups I and II (V: 0.31 +/- 0.1, I: 0.43 +/- 0.06, II: 0.44 +/- 0.06; P less than 0.01; III: 0.41 +/- 0.07, IV: 0.41 +/- 0.08). This reduction was mainly due to enhanced lymph flow. The wash-down of subcutaneous interstitial protein indicated increased capillary filtration, but at the same time limited the increase in net filtration pressure and thereby prevented progressive edema formation in diabetic nephropathy.(ABSTRACT TRUNCATED AT 250 WORDS)

journal_name

Kidney Int

journal_title

Kidney international

authors

Hommel E,Mathiesen ER,Aukland K,Parving HH

doi

10.1038/ki.1990.332

subject

Has Abstract

pub_date

1990-12-01 00:00:00

pages

1187-92

issue

6

eissn

0085-2538

issn

1523-1755

pii

S0085-2538(15)57077-4

journal_volume

38

pub_type

杂志文章

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