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Immunologic Effects of Acute Hyperglycemia in Nondiabetic Rats
Author(s) -
Kwoun Moon O.,
Lydon Erin,
Imrich Amy,
Palombo John,
Bistrian Bruce R.
Publication year - 1997
Publication title -
journal of parenteral and enteral nutrition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.935
H-Index - 98
eISSN - 1941-2444
pISSN - 0148-6071
DOI - 10.1177/014860719702100291
Subject(s) - medicine , respiratory burst , immune system , phagocytosis , parenteral nutrition , endocrinology , enteral administration , diabetes mellitus , flow cytometry , peripheral , immunology
Background: This study was designed to determine the consequences of acute hyperglycemia on the immune function of peripheral neutrophils, peritoneal macrophages, and alveolar macrophages in nondiabetic rats. Methods: The animals were randomly divided into nonsurgical (normal) and surgical groups. The postoperative rats were further divided into normoglycemic (control) and hyperglycemic (glucose) groups. The hyperglycemic condition was maintained by constant infusion of glucose to raise plasma glucose concentration to 300 mg/ dL for 3 hours. The immune cells were then harvested to determine their phagocytic and oxidative capacities via flow cytometry. Results: The results showed that hyperglycemia significantly decreased the respiratory burst of alveolar macrophages (p <.05). In contrast, hyperglycemia enhanced phagocytosis in these cells (p <.002). There was a significant activation of the respiratory burst in peripheral neutrophils by surgery (p <.002), but no effect of hyperglycemia. Conclusions: We conclude that hyperglycemia itself can influence immune function in some phagocytic cells, which may be an important factor in postsurgical infection. (Journal of Parenteral and Enteral Nutrition 21 :91–95, 1997)