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Diabetes mellitus

Morphologische Veränderungen der Nieren

Diabetes mellitus

Morphologic changes of the kidneys

Zusammenfassung

Die diabetische Nephropathie (DN) ist in den westlichen Ländern die häufigste Ursache einer terminalen Niereninsuffizienz bei Erwachsenen. Sie geht mit einer typischen klinischen Symptomatik (Mikroalbuminurie im Frühstadium; dann große Proteinurie) einher und zeigt ein Spektrum an assoziierten morphologischen Nierenveränderungen, die von einer leichten mesangialen Matrixvermehrung und Verdickung der glomerulären Basalmembranen über eine diffuse oder klassische noduläre Glomerulosklerose (Kimmelstiel-Wilson) bis hin zu Endstadiumsveränderungen mit fortgeschrittener glomerulärer Obliteration, Tubulusatrophie, interstitieller Fibrose und Arterio-Arteriolosklerose reichen. Die wichtigsten morphologischen Differenzialdiagnosen der großen Proteinurie im Erwachsenenalter sind Amyloidose, Leichtkettenerkrankung und die membranoproliferative Glomerulonephritis. Selten finden sich zusätzlich zu einer DN auch andere Nierenerkrankungen wie Immunkomplex-Glomerulonephritiden oder eine Nierenbeteiligung bei Systemerkrankungen, sodass bei untypischem Verlauf oder Symptomatik der Nierenerkrankung eine Nierenbiopsie zur Abklärung in jedem Fall empfohlen wird.

Abstract

Diabetic nephropathy (DN) is the leading cause (25%) of chronic renal failure in adults in the western world and has one of the worst survival rates for individuals receiving renal replacement therapy. Typical morphologic features of the disease are thickening of the glomerular basement membrane, mesangial expansion with diffuse or nodular glomerulosclerosis (Kimmelstiel–Wilson nodules), and arteriolar hyalinosis. DN usually develops after 10–15 years of diabetic mellitus and is progressive in nature, resulting in end-stage kidney disease. There is, however, recent evidence that glomerular and tubulointerstitial lesions in DN are to some extent reversible after correction of hyperglycemia. This is not the case, though, for vascular changes. Apart from the typical course of DN, there are a few conditions with an atypical course or symptoms that may result from another renal disease that is superimposed on DN, such as kidney changes in systemic diseases or in immune complex glomerulonephritis; these require a diagnostic kidney biopsy.

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Amann, K., Benz, K. Diabetes mellitus. Nephrologe 2, 319–324 (2007). https://doi.org/10.1007/s11560-007-0101-3

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  • DOI: https://doi.org/10.1007/s11560-007-0101-3

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