Amylin deposition in the kidney of patients with diabetic nephropathy.

Abstract:

:Amylin (islet amyloid peptide) plays a critical role in islet amyloidosis and in the development of beta-cell dysfunction in patients with diabetes; however, the involvement of amylin in renal amyloidosis has not been studied. For this reason, we surveyed 149 patients with biopsy-proven diabetic nephropathy (DN). The results were compared to 95 renal disease control patients, which included membranoproliferative glomerulonephritis, light-chain deposition, IgA nephropathy, and obesity-related glomerulopathy (ORG). Seventy-two of the 149 patients with DN showed amylin deposition in their renal tissue. Amylin was mainly distributed in the expanded mesangial area, Kimmelstiel-Wilson nodules, Bowman's capsule, and in blood vessels. The frequencies of mesangial proliferation, glomerular nodule lesions, and glomerular sclerosis were higher in DN patients with amylin deposits. Furthermore, the tubular interstitial lesions were more severe in these patients. Of the 95 disease-control patients, four with ORG were positive for renal amylin deposits. Our study has found renal amylin deposition in patients with DN and that the deposition was associated with disease severity. We suggest that strict metabolic control and reversing insulin resistance in patients with diabetes may blunt the process of amylin deposition in the kidney and possibly protect renal function in these patients.

journal_name

Kidney Int

journal_title

Kidney international

authors

Gong W,Liu ZH,Zeng CH,Peng A,Chen HP,Zhou H,Li LS

doi

10.1038/sj.ki.5002305

subject

Has Abstract

pub_date

2007-07-01 00:00:00

pages

213-8

issue

2

eissn

0085-2538

issn

1523-1755

pii

S0085-2538(15)52620-3

journal_volume

72

pub_type

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