These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: Histopathology in the rainbow darter, Etheostoma caeruleum, resulting from infections with the Acanthocephalans, Pomphorhynchus bulbocolli and Acanthocephalus dirus.
    Author: McDonough JM, Gleason LN.
    Journal: J Parasitol; 1981 Jun; 67(3):403-9. PubMed ID: 7264831.
    Abstract:
    The histopathology present in Etheostoma caeruleum naturally infected with the acanthocephalans, Acanthocephalus dirus and Pomphorhynchus bulbocolli, was studied and described. The major difference in parasite-induced histopathology was related to the shallow penetration of A. dirus proboscides in the intestinal wall as compared to the penetration of P. bulbocolli. The host responded to the presence of the parasites with connective tissue hyperplasia and with an infiltration of leukocytes, predominantly lymphocytes and eosinophilic granulocytes. The response was greater to P. bulbocolli than to A. dirus. The complete penetration of the intestinal wall by the proboscis, bulb, and neck of P. bulbocolli elicited an intense host response. This resulted in the formation of a tunnel around the neck and capsule around the bulb and proboscis of the parasite. Damage to the epithelial lining of the intestine occurred in areas of contact with the trunk of the parasites. Concurrent infections were common, but there did not appear to be a synergistic effect as a result of the presence of both parasites.
    [Abstract] [Full Text] [Related] [New Search]