2008, Number 2
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Vet Mex 2008; 39 (2)
The inoculation of Lactobacillus casei in NIH mice induces a protective response against Trypanosoma cruzi (Ninoa strain) infection
Bautista GCR, Torres ÁMC
Language: English/Spanish
References: 20
Page: 139-144
PDF size: 169.58 Kb.
ABSTRACT
The aim of the present study was to evaluate the effect of
Lactobacillus casei administered orally or intraperitoneally to NIH mice,
on the experimental infection with
Trypanosoma cruzi Ninoa strain. Twenty three NIH mice were randomly distributed into three groups, which were treated seven days before the infection with 12 × 10
4 Trypanosoma cruzi, Ninoa strain. The animals in the
control group (n = 7) received sterile saline solution by intraperitoneal (ip) route; those in the Lc-O group (n = 8) were treated with
Lactobacillus casei by oral route, and those in the Lc-IP group (n = 8) received
L. casei by ip. The mice treated with the lactobacilli
showed a reduced number of blood parasites after challenge, as compared with those of the control group (P ‹ 0.01). Similarly,
the mice treated with
L. casei by ip route showed a signifi cant minor total number of parasites after challenge, than those of the
group treated with
L. casei by oral route (P ‹0.05). The results suggest that the treatment of mice with
L. casei, both orally and
intraperitoneally, induces a protective response against the experimental infection with
Trypanosoma cruzi Ninoa strain.
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