Abstract:
:Mice homologous for the alymphoplasia mutation (aly) show the systemic absence of secondary lymphoid tissues, with disorganized splenic architecture, including the absence of the germinal centre and follicular dendritic cells. In this study, we examined the influence of defects of gut-associated lymphoid tissue (GALT), such as Peyer's patches and the mesenteric lymph nodes, on the host response to helminth infection in aly/aly mice. The present study showed that most of the worms were expelled by day 7 after Nippostrongylus brasiliensis infection in both control aly/+ and aly/aly mice. In aly/aly mice, the number of peripheral blood eosinophils, intestinal goblet cells and mucosal mast cells were increased by N. brasiliensis infection in aly/aly mice to the same level as in the controls. Conversely, aly/aly mice developed more severe Heligmosomoides polygyrus infections than control aly/+ mice, as demonstrated by increased faecal egg counts, with reduced immune responses such as the numbers of intestinal goblet cells and mucosal mast cells. These results suggested that the dependency of GALT in activation of Th2 responses against gastrointestinal nematodes was different depending on the species of nematode.
journal_name
Scand J Immunoljournal_title
Scandinavian journal of immunologyauthors
Morimoto M,Yamauchi Y,Shinkawa S,Ishiwata K,Hayashi Tdoi
10.1111/j.1365-3083.2006.01754.xsubject
Has Abstractpub_date
2006-05-01 00:00:00pages
365-70issue
5eissn
0300-9475issn
1365-3083pii
SJI1754journal_volume
63pub_type
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