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Plasma leptin, insulin, and neuropeptide Y concentrations in infants
  1. C Mamì1,
  2. R Manganaro1,
  3. G Saitta1,
  4. L Marseglia1,
  5. F Martino2,
  6. M Gemelli1
  1. 1Department of Pediatric and Surgery Science, Division of Neonatology, University of Messina, Messina, Italy
  2. 2Department of Radiologic Science, University of Messina
  1. Correspondence to:
    Professor Mamì
    Divisione di Neonatologia, Policlinico Università di Messina, 98100 Messina, Italy;


Changes in plasma leptin, insulin, and neuropeptide Y (NPY) concentrations were determined by radioimmunological methods in healthy infants. Compared with umbilical concentrations, on the 4th day of life plasma leptin and insulin were significantly decreased, and NPY was significantly increased. No correlation was observed between leptin, insulin, and NPY.

  • leptin
  • insulin
  • neuropeptide Y

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  • Competing interests: none declared