Diabetes Care, Vol 21, Issue 6 999-1003, Copyright © 1998 by American Diabetes Association
Plasma adrenomedullin levels in type 1 diabetes. Relationship with clinical parameters
MT Garcia-Unzueta, C Montalban, C Pesquera, JR Berrazueta and JA Amado
Endocrine Unit, Hospital Universitario Marques de Valdecilla, Universidad de Cantabria, Santander, Spain.
OBJECTIVE: To assess the relationship between plasma adrenomedullin (AM)
levels and the presence of microvascular complications in type 1 diabetic
patients. RESEARCH DESIGN AND METHODS: We measured plasma AM and cAMP
levels in 103 type 1 diabetic patients (46 without complications, 24 with
retinopathy only, 14 with microalbuminuria but normal kidney function, and
19 with renal insufficiency) and 41 matched healthy control subjects.
RESULTS: Patients with renal insufficiency had higher levels of AM and cAMP
than all other groups. Patients with only retinopathy showed a trend to
have higher levels than patients without complications. There were no
differences among all other groups. There was a significant correlation
between AM and cAMP in the total diabetic group (rs = 0.36, P < 0.001)
but not in the control group. In multiple regression analysis, plasma AM
demonstrated significant relationships with creatinine clearance (beta =
-0.31, P = 0.004) and duration of the disease (beta = 0.28, P = 0.008).
CONCLUSIONS: Plasma AM and cAMP are increased in type 1 diabetic patients
with renal insufficiency. Creatinine clearance (CrClc) and duration of the
disease are related to plasma AM levels in these patients.