Effects of infection by larvae of Angiostrongylus cantonensis (Nematoda, Metastrongylidae) on the metabolism of the experimental intermediate host Biomphalaria glabrata.

Abstract:

:The effect of infection by Angiostrongylus cantonensis on the activity of the enzymes alanine aminotransferase (ALT) and aspartate aminotransferase (AST) and the concentration of total proteins, uric acid and urea in the hemolymph of Biomphalaria glabrata were investigated. The snails were dissected after 1, 2 and 3 weeks of infection to collect the hemolymph. The infection by A. cantonensis induced severe changes in the host snail's metabolism, triggering physiological mechanisms to minimize the deleterious effects caused by the larvae. There was a significant decrease in the concentration of total proteins in the infected snails, which occurred gradually as the infection advanced. This change was accompanied by an increase in the concentrations of urea and a decrease in the levels of uric acid in the hemolymph, suggesting that in this model the infection induces proteolysis and inversion of the excretion pattern of the infected snails. Besides this, variations in the activities of the aminotransferases were observed, with significantly higher levels in the infected groups than in the control group. These results indicate an increase in the protein metabolism of the infected snails, since there was an increase in nitrogen catabolites such as urea.

journal_name

Exp Parasitol

authors

Tunholi-Alves VM,Tunholi VM,Pinheiro J,Thiengo SC

doi

10.1016/j.exppara.2012.03.003

subject

Has Abstract

pub_date

2012-06-01 00:00:00

pages

143-7

issue

2

eissn

0014-4894

issn

1090-2449

pii

S0014-4894(12)00085-9

journal_volume

131

pub_type

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