| Abstract | OBJECTIVES: This study examined the effect of fish oil (FO)-enriched diets before and/or omega-3 fatty acid-containing total parenteral nutrition (TPN) after sepsis on the distribution of the T-lymphocyte subpopulation, intracellular cytokine, and intestinal immunity in rats with gut-derived sepsis. METHODS: Rats were assigned to a control or one of four experimental groups. The control group and groups 1 and 2 were fed a semipurified diet, and groups 3 and 4 received FO instead of 20% soybean oil. After feeding the diets for 10 d, sepsis was induced by cecal ligation and puncture (CLP) in the experimental groups, whereas a sham operation was performed in the control group. TPN was maintained for 3 d after the CLP or sham operation. The control group and groups 1 and 3 were infused with conventional TPN, whereas the TPN solution used for groups 2 and 4 were supplemented with FO. All rats were sacrificed 3 d after the operation to examine their immune responses. RESULTS: Plasma and intestinal immunoglobin A levels were higher in the FO-supplemented groups than in the control group and group 1. Lymphocyte interferon-gamma expression in groups 3 and 4 was significantly lower, whereas interleukin-4 expression was higher than those of the control group and groups 1 and 2. The splenocyte CD4 percentage in groups 3 and 4 and the CD4/CD8 ratio in group 4 were significantly higher than those in group 1. CONCLUSION: These findings suggest that FO administration before and/or after CLP are not immunosuppressive. FO-enriched diets before or before and after CLP resulted in a T-helper type 2 response and enhanced immunoglobulin A secretion. In addition, the splenocyte CD4 levels and CD4/CD8 ratio were maintained in rats with gut-derived sepsis. |
| Authors | Ming-Tsan Lin, Chun-Sen Hsu, Sung-Ling Yeh, Chiu-Li Yeh, King-Jen Chang, Po-Huang Lee, Wei-Jao Chen
(Affiliation: Department of Primary Care Medicine, National Taiwan University Hospital and National Taiwan University, College of Medicine, Taipei, Taiwan.)
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| Journal | Nutrition (Burbank, Los Angeles County, Calif.)
(Nutrition)
Vol. 23
Issue 2
Pg. 179-86
(Feb 2007)
ISSN: 0899-9007 United States |
| PMID | 17234509
(Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
|
| Chemical References |
- Cytokines
- Fatty Acids, Omega-3
- Immunoglobulin A
- Integrins
- Interleukin-4
- Interferon Type II
|
| Topics |
- Animals
- CD4-CD8 Ratio
- Cytokines
(biosynthesis, metabolism)
- Dose-Response Relationship, Drug
- Fatty Acids, Omega-3
(administration & dosage, therapeutic use)
- Immunoglobulin A
(biosynthesis)
- Integrins
(biosynthesis, metabolism)
- Interferon Type II
(metabolism)
- Interleukin-4
(metabolism)
- Male
- Parenteral Nutrition, Total
- Random Allocation
- Rats
- Rats, Wistar
- Sepsis
(immunology, metabolism, therapy)
- Th1 Cells
(metabolism)
- Th2 Cells
(metabolism)
|
