Adoptive transfer of granulomatous inflammation to Brugia antigens in jirds

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Brugia pahangi infections of jirds (Meriones unguiculatus) produce a granulomatous inflammatory response within the lymphatic vessels. Granulomas that form around beads coated with soluble adult antigens embolized in the lungs have been used to measure this response. Similar lesions were observed in naive jirds receiving lymph node cells and splenocytes from animals with acute infections. This was not the case with cells from chronically infected jirds that were hyporesponsive to implanted antigen-coated beads. Passively transferred immune sera collected during the acute and chronic periods of infection did not transfer this response. Lymph node cells but not splenocytes obtained from chronically infected jirds induced a down regulation of this response in animals during the acute period. These results indicate that this inflammatory response in the jird is cell mediated and that adoptive transfer in jirds is feasible. The induction of the down- regulated state may also be mediated by cells, but not serum factors.

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Journal of Parasitology

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