Glucose challenge stimulates reactive oxygen species (ROS) generation by leucocytes

P. Mohanty, W. Hamouda, R. Garg, A. Aljada, H. Ghanim, P. Dandona

Research output: Contribution to journalArticlepeer-review

526 Scopus citations

Abstract

Diabetes mellitus is associated with increased ROS generation, oxidative injury and obesity. To elucidate the relationship between nutrition and ROS generation, we have investigated the effect of glucose challenge on ROS generation by leucocytes, p47phox protein, a key protein in the enzyme NADPH oxidase and α-tocopherol levels. Blood samples were drawn from 14 normal subjects prior to, at 1, 2 and 3 h following ingestion of 75 g glucose. ROS generation by polymorphonuclear leucocytes (PMNL) and mononuclear cells (MNC) increased to a peak of 244 ± 42% and 233 ± 34% of the basal respectively at 2h. The levels of p47phox in MNC homogenates increased significantly at 2 h and 3 h after glucose intake. α-Tocopherol levels decreased significantly at 1 h, 2 h and 3 h. We conclude that glucose intake stimulates ROS generation and p47phox of NADPH oxidase; increases oxidative load and causes a fall in α-tocopherol concentration.

Original languageEnglish (US)
Pages (from-to)2970-2973
Number of pages4
JournalJournal of Clinical Endocrinology and Metabolism
Volume85
Issue number8
DOIs
StatePublished - 2000
Externally publishedYes

ASJC Scopus subject areas

  • Endocrinology, Diabetes and Metabolism
  • Biochemistry
  • Endocrinology
  • Clinical Biochemistry
  • Biochemistry, medical

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