Comment on: Cherney and Sochett. Evolution of Renal Hyperfiltration and Arterial Stiffness From Adolescence Into Early Adulthood in Type 1 Diabetes. Diabetes Care 2011;34:1821–1826

We read the insightful article by Cherney and Sochett (1) with interest. The authors carefully compared changes in kidney hemodynamic function and arterial stiffness in young subjects with type 1 diabetes with and without renal hyperfiltration. During the transition from adolescence to early adulthood, hyperfiltration was not sustained, whereas glomerular filtration rate remained stable in normofiltering subjects. In contrast, arterial stiffness decreased in all patients regardless of filtration status, suggesting that age-related increases in arterial stiffness occur at older ages. It was also mentioned that a variety of factors influence hyperfiltration including the renin-angiotensin system (measured in the study by Cherney and Sochett), cyclo-oxygenase 2, reduced bioavailability of nitric oxide, etc. However, it was unclear why only …