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Article |

Suppression of Interleukin 2 Production in an Animal Model of Thermal Injury Is Related to Prostaglandin Synthesis

J. Jeremy Wood, BM, FRCS; John T. Grbic, DMD; Mary L. Rodrick, PhD; Andrea Jordan; John A. Mannick, MD
Arch Surg. 1987;122(2):179-184. doi:10.1001/archsurg.1987.01400140061007.
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• We performed studies using an animal model of thermal injury to confirm the observed decrease in interleukin 2 (IL-2) production in burned patients and to explore the underlying mechanisms. Ten mice subjected to a 25% scald were compared with ten anesthetized littermates (controls) and six untreated mice (normal mice) 1,3, 5,7,10,14, and 21 days after burn. Production of IL-2 by splenocytes was stimulated by concanavalin A alone, or in the presence of the cyclooxygenase inhibitor indomethacin or flurbiprofen. The IL-2 content of the resulting supernatant was determined by the response of the IL-2-dependent cell line CTLL-2. The IL-2 production was significantly suppressed in the burned mice at three days (mean ± SEM, 30.9% ± 5.2%), five days (19% ± 5.5%), seven days (41.6%±6.4%), and 21 days (20%±4.5%). Significant enhancement of IL-2 production by indomethacin was seen in the burned group (mean, 95%), but not in controls (mean, 23.8%) or normal mice (mean, 17.2%), and similar effects were seen with flurbiprofen. In separate experiments the effects of exogenous prostaglandin E2 on lymphocyte blastogenesis and IL-2 production were studied, and an increased susceptibility to the inhibitory effects of prostaglandin E2 was observed following thermal injury.

(Arch Surg 1987;122:179-184)


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