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Veterinary Pathology, Vol 23, Issue 3 245-253, Copyright © 1986 by American College of Veterinary Pathologists

ARTICLES

Citrinin mycotoxicosis in the rabbit: ultrastructural alterations

C. Hanika, W. W. Carlton, E. J. Hinsman and J. Tuite

Citrinin was given to rabbits as a single oral dose of 120 or 67 mg/kg. Rabbits were killed at 4, 6, 8, 10, and 12 hours post dosing, and the kidneys were fixed by intravascular perfusion. Ultrastructural alterations were evident by 4 hours after treatment. In the proximal tubule, alterations were brush border disruption, cytoplasmic rarefaction, and swelling of interdigitating processes. At higher doses, mitochondria were condensed and distorted. Medullary and straight cortical distal tubules had marked distention of the intercellular spaces and disorganization of interdigitating processes. Changes in cortical and outer medullary collecting ducts were similar but less severe. Renal alterations were suggestive of damage to membrane structure and/or transport functions and interference with cellular bioenergetics. Leukocytic infiltration was associated with damaged tubules indicating a contribution of inflammation to the development of the lesions.




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Copyright © 1986 by the American College of Veterinary Pathologists.