Abstract(Please copy/paste the abstract send to the congress) : |
Cytokine assay (ILs 4, 10, 12, 17, 23, IFN-γ), CD8+& CD4+ in pre challenge Balb/c mice vaccinated by the Leishmania major new vaccine.
Latifynia Afshineh ¹,²*, Gharagozlou Mohammad Javad³, Niknam Mohammad Hossein ¹, Farashi Bonab Samad ¹, Ansaripour Bita¹, Gheflati Zahra¹, Hajjaran Homa 4 , Khansari Nematollah¹
¹Department of Immunology, Faculty of Medicine, Tehran University of Medical Sciences, Tehran, Iran
²Research Center for Immunodeficiencies, Children’s Medical Center Hospital, Tehran University of Medical Sciences, Tehran, Iran
³Department of Pathobiology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
4Department of Parasitology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
*Corresponding author: Latifynia Afshineh, Dept. of Immunology, Faculty of Medicine, Tehran University of Medical Sciences, Tehran, Iran
Tel:982166439463; E-mail: alatifynia@sina.tums.ac.ir
Abstract:
Objective: Leishmaniasis, a zoonotic protozoan disease is common in the south and Central America, Asia and Africa continents where phlebotomus mosquito species transmit the disease between susceptible species. The companion animals and wild species can act as reservoir and maintain the parasite in the environment. This parasite is seen as amastigote form in vertebrate animals and promastigote form in the insects. Leishmaniasis affects about 12 million people from 88 countries and creates a complex and unpleasant disease that is long lasting, hard to treat and sometimes a life threatening disease that is known as visceral leishmaniasis. For this reason, development of an effective and a safe vaccine that protects the susceptible species is necessary. According to our previous finding of the author related to the new formulated provisional vaccine, it seems that a complex humoral and cellular response followed by vaccination to be involved, which required further investigation. Methods: In the present project, we had six vaccinated groups received either 100 or 200 microgram/0.1ml L.major cocktail antigen, each of them also received Leishmania + BCG (LB), Leishmania + Teucrium (LT), or Leishmania + BCG + Teucrium (LBT) groups, and also one control group was considered. After vaccination and booster dose, CD4+ and CD8+ T cells profile of the lymphoid tissues and serum levels of immune effector cytokines including ILs-4, 10, 12, 17, 23, IFN-gamma were evaluated and the findings were analyzed statistically. Results: Considering the six vaccinated groups compared together and normal group : number and size of pulps, percent of spleen weight /mouse weight, interferon gamma with mean of white pulp size, CD4+ with CD3+,IL- 23 with IFN-γ have had significant differences. And also without considering two injection doses, and considering to three injection groups: IL-10, lL-23, IL-12, CD25+, CD3+&CD4+ have had significant differences which may indicate a satisfactory immune response to the new formulated L.major antigen as a provisional vaccine.
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