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Proc Natl Sci Counc Repub China B. 1991 Apr;15(2):105-10.

Effect of fish oil diet on immune response and proteinuria in mice.

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Department of Medical Research, Taichung Veterans General Hospital, Taiwan, R.O.C.


In this study, we examined the immune response and proteinuria caused by dietary polyunsaturated fatty acids in normal NZW/N and autoimmune NZB/NZW mice. Mice were maintained more than one year on five dietary groups: normal (5% corn oil), calorie-restricted, high fat (20% corn oil), high fat (20% fish oil), and Purina laboratory rodent chow. Normal mice fed with the fish oil diet had a more reduced anti-sheep red blood cells (SRBC) plaque-forming cell (PFC) response and less interleukin-2 (IL-2) enhancement of PFC than did the group with the restricted diet and the young control group. The corn oil (5 and 20%) diet animals also showed reduced PFC response and IL-2 utilization. NZB/NZW mice fed with the fish oil diet showed similar reduced PFC response but had a significantly lower response to IL-2 than did those on the corn oil diets and the restricted diet. The IL-2 production by macrophages from NZW/N mice was reduced in both the fish oil and corn oil diet groups. However, mice fed with the fish oil diet had less proteinuria and good survival rates, similar to the group with the restricted diet. These results suggest that the beneficial effect of the fish oil diet in these animals may be attributed in part to the immunosuppression mechanism.

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