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KMID : 0425120170550040439
Parasites, Hosts and Diseases
2017 Volume.55 No. 4 p.439 ~ p.444
Syphacia obvelata: A New Hope to Induction of Intestinal Immunological Tolerance in C57BL/6 Mice
Taghipour Niloofar

Mosaffa Nariman
Rostami Nejad Mohammad
Homayoni Mohamad Mohsen
Mortaz Esmaeil
Aghdaei Hamid Asadzadeh
Zali Mohammad Reza
Abstract
The ability of nematodes to manipulate the immune system of their host towards a Th2 and T regulatory responses has been proposed to suppress the inflammatory response. Clinical trials have proposed a useful effect of helminth infections on improvement of inflammatory disorders. In this study, we investigated the immunomodulatory effect of Syphacia obvelata infection to induce intestinal tolerance in C57BL/6 mice. Mice were infected through the cagemates with self-infected BALB/c mice. Four weeks post-infection, expression levels of IFN-¥ã, TNF-¥á, IL-17, and IL-10 were assessed in the supernatant of mesenteric lymph node (MLN) culture. Foxp3+Treg were measured in MLN cells by flow cytometry. In the S. obvelata-infected group, the percentage of Tregs (5.2¡¾0.4) was significantly higher than the control (3.6¡¾0.5) (P<0.05). The levels of IL-10 (55.3¡¾2.2 vs 35.2¡¾3.2), IL-17 (52.9¡¾3.8 vs 41¡¾1.8), IFN-¥ã (44.8¡¾4.8 vs 22.3¡¾2.3) and TNF-¥á (71.1¡¾5.8 vs 60.1¡¾3.3) were significantly increased in infected mice compared to the control group (P<0.05). The above results showed the potential effects of S. obvelata to induce intestinal tolerance. Therefore, it seems that S. obvelata may increase the immunological suppressive function in the intestinal tract.
KEYWORD
Syphacia obvelata, T regulatory cell, Foxp3, C57BL/6, inflammatory disorder, intestinal tolerance
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