Trichinella spiralis reinfection: macrophage activity in BALB/c mice.

The role of macrophages and their products--nitric oxide (NO) and superoxide anion (O(2) (-))--were examined in BALB/c mice reinfected with Trichinella spiralis. Mice were infected twice with 400 T. spiralis larvae; the secondary infection was performed 60 days after the primary one.

[Eosynophils in parasitic infections--clinical and functional significance].

Eosinophils are multifunctional cells which contain and produce many biologically active substances. Their presence is mainly associated with parasitic infections or allergic manifestations. Eosinophilia is a common feature of helminth infections occurring both in the blood and at local sites of infection.

Raccoon dog (Nyctereutes procyonoides)--the new host of Echinococcus multilocularis in Poland.

The alimentary canals of 9 species of domesticated or wild animals were examined for the presence of E. multilocularis. The tapeworm was found in 9 red foxes (Vulpes vulpes) out of 155 examined (5.

[Ultrastructural analysis of capsule and nurse-cell morphology examined seven months after Trichinella spiralis mouse infection].

Ultrastructural changes in muscles cells of mice infected with T. spiralis larvae in 220 day of infection were evaluated. The object of study was in the region of the "nurse-cell" being in direct contact with the larva wall.

Inhibition of nitric oxide production by aminoguanidine influences the number of Trichinella spiralis parasites in infected "low responders" (C57BL/6) and "high responders" (BALB/c) mice.

The influence of nitric oxide (NO) on the development of adults and larvae Trichinella spiralis was examined in two strains of mice: C57BL/6 and BALB/c. The influence of aminoguanidine (AG)-inhibitor of inducible nitric oxide synthase (iNOS) administered in the first days after T. spiralis infection (1-5 dpi) on the number of adult parasites, as well as the influence of AG administered at the beginning of muscle phase of the T.