Cell and matrix components of the glomerular mesangium in type I diabetes

Michael W Steffes, Rudolf W. Bilous, David E.R. Sutherland, Michael Mauer

Research output: Contribution to journalArticle

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Abstract

In a cross-sectional study, glomerular basement membrane (GBM) width, the volume fractions of the mesangium (VvMes), its cell (VvCell) and matrix (VvMatx) components, and surface density of the peripheral capillary surface (SVPGBM) were measured in renal biopsies from 187 nondiabetic living related and cadaveric donors of kidneys for transplantation and from 150 patients with insulin-dependent (type I) diabetes mellitus of 1-41 yr duration. In the diabetic patients, the matrix was the major factor in the expansion of the mesangium. However, both VvCell (0.11 ± 0.04) and VvMatx (0.20 ± 10) in diabetic patients exceeded the same measurements in nondiabetic subjects (0.07 ± 0.02 for each component) (P < 0.001 in each case). Linear regression analysis demonstrated significant correlations (P < 0.001 for all) between GBM width, VvMes, VvCell, VvMatx, or SvPGBM and either urinary albumin excretion and creatinine clearance, with the higher correlation coefficients in all cases with albuminuria. Of the structural parameters, VvMatx correlated best with either functional measure by stepwise regression, with GBM as an added factor only with albuminuria. Therefore, although models of diabetic glomerulopathy must consider enlargement of both mesangial cells and matrix, the predominant factor in the progression of structural and functional renal disease is mesangial matrix expansion.

Original languageEnglish (US)
Pages (from-to)679-684
Number of pages6
JournalDiabetes
Volume41
Issue number6
DOIs
StatePublished - Jan 1 1992

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Glomerular Mesangium
Glomerular Basement Membrane
Cellular Structures
Type 1 Diabetes Mellitus
Albuminuria
Kidney
Mesangial Cells
Kidney Transplantation
Albumins
Linear Models
Creatinine
Cross-Sectional Studies
Regression Analysis
Tissue Donors
Biopsy

Cite this

Cell and matrix components of the glomerular mesangium in type I diabetes. / Steffes, Michael W; Bilous, Rudolf W.; Sutherland, David E.R.; Mauer, Michael.

In: Diabetes, Vol. 41, No. 6, 01.01.1992, p. 679-684.

Research output: Contribution to journalArticle

Steffes, Michael W ; Bilous, Rudolf W. ; Sutherland, David E.R. ; Mauer, Michael. / Cell and matrix components of the glomerular mesangium in type I diabetes. In: Diabetes. 1992 ; Vol. 41, No. 6. pp. 679-684.
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