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      Carotid atherosclerosis in type 2 diabetes mellitus: potential role of endothelin-1, lipoperoxides, and prostacyclin.

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          Abstract

          Factors were studied that may initiate macroangiopathy or enhance or aggravate its pathogenesis in patients with type 2 diabetes mellitus. A total of 151 diabetics were compared with healthy controls (n=50); all patients and subjects were normotensive and without renal failure. Plasma endothelin-1 and free radical levels were measured. In addition, plasma prostacyclin levels were assessed by assaying its stable, spontaneous, breakdown product 6-keto-prostaglandin-F1a. Diabetics were divided into three groups: those with clinically evident macroangiopathy and those with early or without atherosclerosis (as determined by the carotid intima-media thickness. Plasma endothelin-1 levels were increased in all diabetics with atherosclerosis. Plasma free radical levels were increased in diabetics with macroangiopathy when compared with control subjects. The plasma levels of 6-keto-prostaglandin-F1a were slightly, but significantly, decreased in the diabetics with macroangiopathy when compared with control subjects. The carotid intima-media thickness was significantly greater in diabetics without macroangiopathy when compared with the controls. Furthermore, the intima-media thickness increased significantly in this group of diabetics but not in the controls over a 30-month follow-up period. Several factors may contribute to atherogenesis in diabetics. These include increased plasma endothelin-1 and free radical levels as well as a deficiency of prostacyclin. These factors may become targets for intervention as well as markers of disease progression.

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          Author and article information

          Journal
          Angiology
          Angiology
          SAGE Publications
          0003-3197
          0003-3197
          May 25 2002
          : 53
          : 3
          Affiliations
          [1 ] Department of Nuclear Medicine, Army Veterans Hospital, Athens, Greece.
          Article
          10.1177/000331970205300305
          12025915

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