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

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

Research output: Contribution to journalArticlepeer-review

213 Scopus citations

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 - Jun 1992

Fingerprint Dive into the research topics of 'Cell and matrix components of the glomerular mesangium in type I diabetes'. Together they form a unique fingerprint.

Cite this