The effects of 48 h okadaic acid (OA) treatment and the ability to recover the induced toxicological injuries were examined in Enchytraeus crypticus of different ages (25 days and 3 months). The results demonstrated that the older worms are more sensitive to the toxin and show less capacity to recover. After 48 h OA treatment, the structural organization of the chloragogenous tissue appeared modified and associated with an immune response involving a higher number of circulating coelomocytes immunoreactive to anti-IL-6 antibody. The toxin effects were more evident in 3-month-old animals compared to specimensaged 25 days. Regarding the morpho-functional recovery from the induced modifications, first signs of recuperation were observed in younger worms at 48 h, and recovery was almost complete within 1 week. In older animals, the morphology of thechloragogenous tissue had not been restored, while a reduction in coelomocyte number was found after 1 week.
Age-related toxic effects and recovery from okadaic acid treatment in Enchytraeus crypticus (Annelida: Oligochaeta) / Franchini, Antonella; Ottaviani, Enzo. - In: TOXICON. - ISSN 0041-0101. - STAMPA. - 52:1(2008), pp. 115-121. [10.1016/j.toxicon.2008.04.176]
Age-related toxic effects and recovery from okadaic acid treatment in Enchytraeus crypticus (Annelida: Oligochaeta)
FRANCHINI, Antonella;OTTAVIANI, Enzo
2008
Abstract
The effects of 48 h okadaic acid (OA) treatment and the ability to recover the induced toxicological injuries were examined in Enchytraeus crypticus of different ages (25 days and 3 months). The results demonstrated that the older worms are more sensitive to the toxin and show less capacity to recover. After 48 h OA treatment, the structural organization of the chloragogenous tissue appeared modified and associated with an immune response involving a higher number of circulating coelomocytes immunoreactive to anti-IL-6 antibody. The toxin effects were more evident in 3-month-old animals compared to specimensaged 25 days. Regarding the morpho-functional recovery from the induced modifications, first signs of recuperation were observed in younger worms at 48 h, and recovery was almost complete within 1 week. In older animals, the morphology of thechloragogenous tissue had not been restored, while a reduction in coelomocyte number was found after 1 week.
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