The world distribution of oriental culture and the common use of fish which is not cooked manifested problems related to parasites. There is a great incidence of Ascocotyle sp. parasites in mullet fishes, which are part of human culinary spread all over world. The aim of the present study is to estimate the presence of trematode Heterophyidae metacercariae among mullet fishes commercialized at Iguape city Sao Paulo, Brazil. Ascocotyle sp. metacercarie (Digenea: Heterophyidae) were observed and analyzed in viscera and muscles of 60 mullets Mugil liza and 60 mullets Mugil curema (Osteichthyes: Mugilidae) purchased in the fish market of the Iguape city. The extraction of metacercariae of Ascocotyle sp. from viscera and muscles was performed by homogenization in homemade processor. All mullets samples were infected. M. liza and M. curema marketed in city constitute in a potential risk to the...

In order to investigate the levels of antibodies and antigen in sera and in broncho-alveolar lavage fluid (BALF) samples, female rats immunosuppressed or non-immunosuppressed female rats and rats experimentally infected with Strongyloides venezuelensis and their young offspring were used. For this, enzyme-linked immune-sorbent assay (ELISA) was conducted using alkaline parasite extracts and anti-L3 polyclonal antibody produced in rabbits. Findings revealed that young offspring from immunosuppressed females presented significantly higher positivity for IgG detection in serum samples and in BALF. In addition, antigen detection in serum samples was also more evident in offspring from immunosuppressed rats. Thus, we reinforce the transmammalianroute of Strongyloides infection in experimental model infection.