[The influence of early enteral immunonutrition on immunological function of body and intestine in severely scalded rats].
OBJECTIVE
To investigate the influence of early enteral immunonutrition on immunological function of body and intestine in severely scalded rats.


METHODS
Sixty-four healthy adult SD rats were subjected to 30% TBSA full-thickness scald and randomly divided into enteral nutrition group (EN, n = 32) and enteral immunonutrition group (EIN, n = 32). Another 8 healthy rats were enrolled as normal controls. The changes in CD3+, CD4+, CD8+ T lymphocyte subsets, the PCNA expression in intestinal mucosa,the amount of plasmocytes in lamina propria of small intestine and the content of s-IgA in small intestine were determined on 1, 4, 7 and 10 post-burn days (PBD).


RESULTS
(1) CD3+, CD4+ and the ratio of CD4+/CD8+ were remarkably declined, while CD8+ was obviously raised after scald in EN group, and there were statistically significant differences at most of time-points when compared with those in control group (P < 0.05 or P < 0.01). CD3+, CD4+ and the ratio of CD4+/CD8+ on 7 and 10 PBD in EIN group were obviously higher (increased from 4 PBD on, and it was 1.86 +/- 0.25 on 10 PBD) than those in EN group (CD4+/CD8+ was 1.26 +/- 0.10 on 10 PBD), while CD8+ in EIN group was evidently lower than that in EN group (P < 0.01). (2) The level of PCNA expression in intestinal mucosa, the amount of plasmocytes in lamina propria of small intestine and the content of s-IgA in small intestine in EIN group were increased significantly compared with EN group on 4, 7, 10 PBD (P < 0.05 or P < 0.01).


CONCLUSIONS
Early enteral immunonutrition can improve immunological function of body and intestine after severe scald, with better results than enteral nutrition.
Guo
Guang-hua
GH
Burn Center, the First Affiliated Hospital of Nanchang University, Nanchang, P. R. China. guogh2000@hotmail.com
Cai
Chen
C
Fan
Jun
J
Zhang
Hong-yan
HY
Li
Guo-hui
GH
D000818:Animals; D001120:Arginine; D002056:Burns / Q000276:immunology* / Q000628:therapy*; D016516:CD4-CD8 Ratio; D004750:Enteral Nutrition; D005973:Glutamine; D007071:Immunoglobulin A, Secretory / Q000378:metabolism; D007413:Intestinal Mucosa / Q000378:metabolism; D007421:Intestine, Small / Q000378:metabolism; D018809:Proliferating Cell Nuclear Antigen / Q000378:metabolism; D011897:Random Allocation; D051381:Rats; D017207:Rats, Sprague-Dawley
D007071:Immunoglobulin A, Secretory; D018809:Proliferating Cell Nuclear Antigen; D005973:Glutamine; D001120:Arginine