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Ascaris lumbricoides and Ascaris suum vary in their larval burden in a mouse model

Published online by Cambridge University Press:  26 February 2020

G. Deslyper*
Affiliation:
Department of Zoology, School of Natural Sciences, Trinity College Dublin, Dublin, Ireland
O.A. Sowemimo
Affiliation:
Department of Zoology, Obafemi Awolowo University, Ile-Ife, Osun State, Nigeria
J. Beresford
Affiliation:
Department of Zoology, School of Natural Sciences, Trinity College Dublin, Dublin, Ireland
C.V. Holland
Affiliation:
Department of Zoology, School of Natural Sciences, Trinity College Dublin, Dublin, Ireland
*
Author for correspondence: G. Deslyper, E-mail: deslypeg@tcd.ie

Abstract

Ascariasis is a neglected tropical disease, caused by Ascaris lumbricoides, affecting 800 million people worldwide. Studies focused on the early stage of parasite infection, occurring in the gut, liver and lungs, require the use of a mouse model. In these models, the porcine ascarid, Ascaris suum, is often used. The results obtained from these studies are then used to draw conclusions about A. lumbricoides infections in humans. In the present study, we sought to compare larval migration of A. suum and A. lumbricoides in mouse models. We used a previously developed mouse model of ascariasis, which consists of two mouse strains, where one mouse strain – C57BL/6J – is a model for relative susceptibility and the other – CBA/Ca – for relative resistance. Mice of both strains were infected with either A. suum or A. lumbricoides. The larval burden was assessed in two key organs, the liver and lungs, starting at 6 h post infection (p.i.) and ending on day 8 p.i. Additionally, we measured the larval size of each species (μm) at days 6, 7 and 8 p.i. in the lungs. We found that larval burden in the liver is significantly higher for A. lumbricoides than for A. suum. However, the inverse is true in the lungs. Additionally, our results showed a reduced larval size for A. lumbricoides compared to A. suum.

Information

Type
Research Paper
Copyright
Copyright © The Author(s) 2020. Published by Cambridge University Press

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