N-3 fatty acids modulate Th1 and Th2 dichotomy in diabetic pregnancy and macrosomia.

Abstract:

:We assessed the implication of Th (helper)-cells and the modulation of the Th1/Th2 dichotomy by n-3 polyunsaturated fatty acids (PUFA) in type I diabetic pregnancy (DP) and macrosomia. Female gestant rats fed a standard diet or n-3 PUFA regimen were rendered diabetic by administration of five low doses of streptozotocin. The macrosomic (MAC) offspring were sacrificed at the age of 90 days. The mRNAs of IL-2 and IFN-gamma (Th1 cytokines) and IL-4 (Th2 cytokine) were downregulated in the pancreas and spleen of diabetic pregnant rats. The levels of IL-10 mRNA, another Th2 cytokine, were unchanged in the spleen or upregulated in the pancreas of these animals. Feeding an n-3 PUFA diet to rats with DP upregulated IL-10 mRNA in the pancreas and IL-4 and IL-10 mRNA in the spleen. In MAC offspring, high expression of IL-2 and IFN-gamma mRNA, but not of Th2 cytokines, was observed. The n-3 PUFA diet diminished Th1 mRNA quantities and increased the levels of IL-4, but not of IL-10, mRNA in MAC offspring. Our study shows that DP is associated with a decreased Th1 phenotype and IL-4 mRNA expression in the pancreas and spleen, and an n-3 PUFA diet upregulates Th2 profile. In MAC offspring, the Th1 phenotype is upregulated and an n-3 PUFA diet downregulates this phenomenon.

journal_name

J Autoimmun

journal_title

Journal of autoimmunity

authors

Khan NA,Yessoufou A,Kim M,Hichami A

doi

10.1016/j.jaut.2006.03.003

subject

Has Abstract

pub_date

2006-06-01 00:00:00

pages

268-77

issue

4

eissn

0896-8411

issn

1095-9157

pii

S0896-8411(06)00018-7

journal_volume

26

pub_type

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