Kinetics of cell migration to the dermis and hypodermis in dogs vaccinated with antigenic compounds of Leishmania braziliensis plus saponin.
نویسندگان
چکیده
The search for new immunobiologicals against canine visceral leishmaniasis (CVL) has intensified in the last decade. However, it still remains to be elucidated that mechanisms of the innate immune response in situ after immunization (a.i.). The aim of this study was to investigate the kinetics of cell migration in the skin dogs with distinct antigenic compounds of the LBSap vaccine. Our major findings indicated that saponin adjuvant alone or combined with Leishmania braziliensis antigen induced strong local acute inflammatory reaction. However, these reactions not progressed to ulcerated lesions. Overall, the cell profile found in Sap and LBSap was composed of neutrophils, lymphocytes and eosinophils. There was also increased production of iNOS in Sap and LBSap groups. Thus, we can conclude that dogs immunized by LBSap and the saponin adjuvant elicited a potential innate-immune activations status compatible with effective control of the resistance to infection by Leishmania and contributing to a better understanding of the innate-immunity events induced by the LBSap vaccine.
منابع مشابه
Histological study of cell migration in the dermis of hamsters after immunisation with two different vaccines against visceral leishmaniasis.
Vaccine candidates, including live and/or killed parasites, Leishmania-purified fractions, defined recombinant antigens and antigen-encoding DNA-plasmids have been proposed to use as vaccine anti-Leishmania. More recently, the hamsters have been used to pre-selection of antigens candidate to apply in further experiments using canine model. In this report we evaluated the kinetics of cell migrat...
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متن کاملDogs immunized with LBSap vaccine displayed high levels of IL-12 and IL-10 cytokines and CCL4, CCL5 and CXCL8 chemokines in the dermis.
The complex interplay between cytokines and chemokines regulates innate and adaptive immune responses against pathogens; specifically, cytokine and chemokine expression drives activation of immune effector cells and their recruitment to tissue infection sites. Herein, we inoculated dogs with Leishmania braziliensis antigens plus saponin (the LBSap vaccine), as well as with the vaccine component...
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ورودعنوان ژورنال:
- Vaccine
دوره 26 31 شماره
صفحات -
تاریخ انتشار 2008