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Journal Article
Randomized Controlled Trial
Research Support, Non-U.S. Gov't
Glucosepane and oxidative markers in skin collagen correlate with intima media thickness and arterial stiffness in long-term type 1 diabetes.
Journal of Diabetes and its Complications 2015 April
AIMS: To study intima media thickness (cIMT) and arterial stiffness in type 1 diabetes of long duration, and their associations with the collagen cross-linker glucosepane and inflammatory and oxidative markers.
METHODS: Twenty-seven individuals with type 1 diabetes mellitus of 40 years duration from the Oslo Study cohort and 24 age-matched controls were included. cIMT measurements of the carotid artery were performed longitudinally. Pulse wave velocity (PWV), augmentation index (AIx) and augmentation pressure (AP) were assessed cross-sectionally. Glucosepane and the oxidative product methionine sulfoxide (MetSO) were determined in skin collagen by liquid chromatography-mass spectrometry. Circulating inflammatory markers were determined by ELISAs.
RESULTS: The diabetes patients had significantly increased cIMT and arterial stiffness compared to controls. Significant correlations were noted for skin glucosepane with cIMT (r=0.41) and PWV (r=0.44). Skin MetSO and monocyte chemoattractant protein-1 (MCP-1) correlated significantly with AIx and AP. After correcting for age and mean arterial pressure in multiple linear regression analysis, MetSO and MCP-1 were both independently associated with AIx and AP.
CONCLUSIONS: These results suggest more premature atherosclerosis and arterial pathology in individuals with diabetes compared to age-matched controls. They also suggest an association between the arterial pathology and markers of collagen crosslinking, oxidative damage and inflammation in type 1 diabetes patients of forty years disease duration.
METHODS: Twenty-seven individuals with type 1 diabetes mellitus of 40 years duration from the Oslo Study cohort and 24 age-matched controls were included. cIMT measurements of the carotid artery were performed longitudinally. Pulse wave velocity (PWV), augmentation index (AIx) and augmentation pressure (AP) were assessed cross-sectionally. Glucosepane and the oxidative product methionine sulfoxide (MetSO) were determined in skin collagen by liquid chromatography-mass spectrometry. Circulating inflammatory markers were determined by ELISAs.
RESULTS: The diabetes patients had significantly increased cIMT and arterial stiffness compared to controls. Significant correlations were noted for skin glucosepane with cIMT (r=0.41) and PWV (r=0.44). Skin MetSO and monocyte chemoattractant protein-1 (MCP-1) correlated significantly with AIx and AP. After correcting for age and mean arterial pressure in multiple linear regression analysis, MetSO and MCP-1 were both independently associated with AIx and AP.
CONCLUSIONS: These results suggest more premature atherosclerosis and arterial pathology in individuals with diabetes compared to age-matched controls. They also suggest an association between the arterial pathology and markers of collagen crosslinking, oxidative damage and inflammation in type 1 diabetes patients of forty years disease duration.
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