Abstract:
BACKGROUND/AIM:Interleukin-6 (IL-6) promotes the growth of renal mesangial cells. IL-6 may play a major role in such mesangial proliferation, but there has been little research on IL-6 in relation to diabetic nephropathy because of the difficulty in measuring urinary and serum IL-6 levels. Using a newly developed, highly sensitive IL-6 assay, we studied the relationship between serum and urinary IL-6 and diabetic nephropathy. METHODS:We investigated 72 patients with type 2 diabetes. Urinary and serum IL-6 concentrations were measured using a chemiluminescent enzyme immunoassay with a detection limit of 0.11 pg/ml. RESULTS:There was a significant increase of the serum IL-6 level as diabetic nephropathy progressed, with the level being 1.4 +/- 0.3 pg/ml in patients with normal albuminuria, rising to 2.4 +/- 0.6 pg/ml in patients with microalbuminuria and then to 4.4 +/- 0.8 pg/ml in those having proteinuria. The serum IL-6 level was also significantly correlated with fibrinogen and aortic pulse wave velocity. The urinary IL-6 level was also significantly increased in diabetic patients as nephropathy progressed. Both serum and urinary IL-6 levels were high in the group with nephropathy, but there was no correlation between the two. CONCLUSION:The urinary IL-6 level seems to be a good indicator of diabetic nephropathy, and atherosclerotic changes were related to the serum IL-6 level. The serum IL-6 may, therefore, be useful in the evaluation of atherosclerosis including nephropathy.
journal_name
Nephronjournal_title
Nephronauthors
Shikano M,Sobajima H,Yoshikawa H,Toba T,Kushimoto H,Katsumata H,Tomita M,Kawashima Sdoi
10.1159/000045634subject
Has Abstractpub_date
2000-05-01 00:00:00pages
81-5issue
1eissn
1660-8151issn
2235-3186pii
45634journal_volume
85pub_type
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