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  • Title: Plasma neuropeptide Y (NPY) and galanin before and during exercise in type 1 diabetic patients with autonomic dysfunction.
    Author: Sundkvist G, Bramnert M, Bergström B, Manhem P, Lilja B, Ahrén B.
    Journal: Diabetes Res Clin Pract; 1992 Mar; 15(3):219-26. PubMed ID: 1374311.
    Abstract:
    Plasma neuropeptide Y (NPY), plasma galanin and plasma catecholamines were determined before and during an ergometer exercise test in 11 type 1 diabetic patients (age 19-36 years, mean 30; duration of diabetes 2-18 years, mean 9) with autonomic dysfunction and in 13 age-matched healthy controls (age 24-36 years, mean 29). Before exercise, plasma NPY (100 +/- 6 pmol/l vs 144 +/- 7 pmol/l; P less than 0.001) and plasma galanin (54 +/- 3 pmol/l vs 77 +/- 5 pmol/l; P less than 0.005) were significantly lower in patients than in controls. During exercise, plasma NPY, plasma adrenaline, and plasma noradrenaline increased in patients and controls while galanin only increased in patients. Since there was a direct correlation between plasma NPY before exercise and the increment (delta 80%) in noradrenaline during exercise (r = 0.54; P less than 0.01), it is suggested that plasma NPY determined in the basal situation may be a useful marker of sympathetic nerve failure in diabetic patients.
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