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Increased production of interferon‐gamma, but not IL‐4 mRNA, by streptozotocin in the popliteal lymph node assay
Author(s) -
ChoquetKastylevsky G.,
Ducluzeau M.T.,
Tedone R.,
Nicolas J.F.,
Descotes J.
Publication year - 2000
Publication title -
journal of applied toxicology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.784
H-Index - 87
eISSN - 1099-1263
pISSN - 0260-437X
DOI - 10.1002/(sici)1099-1263(200005/06)20:3<175::aid-jat626>3.0.co;2-a
Subject(s) - streptozotocin , lymph node , interferon gamma , messenger rna , lymph , immune system , immunology , endocrinology , medicine , chemistry , biology , diabetes mellitus , pathology , biochemistry , gene
The popliteal lymph node (PLN) assay has been proposed as a tool to predict systemic autoimmune reactions induced by medicinal products and chemicals, the mechanisms of which are poorly understood. To determine whether PLN responses involved Th1 or Th2 cell control, or both, the effects of streptozotocin (STZ), a prototypic immunotoxic compound, were analysed on the production of interferon‐gamma (IFN‐γ) and interleukin‐4 (IL‐4) mRNA by lymph node cells after injection into the hind footpad of C57 BL/6 mice. Streptozotocin induced a dramatic increase in IFN‐γ mRNA production, which correlated with PLN responses as evidenced by augmented weight and cellularity indices. No effect on IL‐4 mRNA synthesis was noted. These results suggest that a Th1 response is involved in the PLN response to STZ. Copyright © 2000 John Wiley & Sons, Ltd.