| چکیده انگلیسی مقاله |
Objective(s): Leishmaniasis is a complex parasitic disease that represents a major public health problem. Despite numerous attempts over the past decades, yet there is no effective vaccine against human leishmaniasis probably due to the lack of suitable adjuvants. In this study, a first generation liposomal-based Leishmania vaccine was developed using soluble Leishmania major antigens (SLA) and á, Ü-trehalose6, 6'-dibehenat (TDB) as an immunostimulatory adjuvant. In this liposome structure, the cationic lipid Dimethyldioctadecylammonium (DDA) provides intrinsic adjuvant activity and cholesterol was added as a membrane stabilizer. Liposomes containing SLA were prepared.Materials and Methods: BALB/c mice were subcutaneously (sc) immunized with Lip (DDA/TDB/CHOL)-SLA+, Lip (DDA/TDB)-SLA+, Lip (DDA)-SLA+, Lip (DDA/CHOL)-SLA+, SLA or Tris-HCl buffer. Immunization was done every two weeks for three weeks. The immunized mice were then challenged sc in the left footpad with 1×106 stationary phase L. major promastigotes (50 ìl), at 2 weeks after last booster injection.Results: mice immunized with any of the liposomal formulations containing SLA (Lip-SLA+), substantially increased footpad swelling and parasite loads of foot and spleen with no significant difference compared to Tris-HCl buffer or SLA alone. Lip-SLA+ formulations induced a mixed Th1/Th2 immune response characterized by IFN-ã and IL-4 production as well as high levels of IgG1 anti-Leishmania antibody. Conclusion: immunization with liposomes containing DDA and/or TDB in combination with SLA induces a mixed Th1/Th2 immune response and is not an appropriate strategy for preferential induction of a Th1 response and protection against leishmaniasis. |
| نویسندگان مقاله |
منصوره حجتی زاده | mansure hojatizade
pathobiology department, school of public health, tehran university of medical sciences, tehran, iran|department of basic medical sciences, neyshabur university of medical sciences, neyshabur, iran
سازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (Tehran university of medical sciences)
علی بدیعی | ali badiee
nanotechnology research center, school of pharmacy, mashhad university of medical sciences, mashhad, iran
سازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (Mashhad university of medical sciences)
علی خامسی پور | ali khamesipour
center for research and training in skin diseases and leprosy, tehran university of medical sciences, tehran, iran
سازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (Tehran university of medical sciences)
عباس میرشفیعی | abbas mirshafiey
pathobiology department, school of public health, tehran university of medical sciences, tehran, iran
سازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (Tehran university of medical sciences)
جواد اختری | javad akhtari
immunogenetics research center, faculty of medicine, mazandaran university of medical sciences, sari, iran
سازمان اصلی تایید شده: دانشگاه علوم پزشکی مازندران (Mazandaran university of medical sciences)
احمد مهرآوران | ahmad mehravaran
infectious diseases and tropical medicine research center, zahedan university of medical sciences, zahedan, iran
سازمان اصلی تایید شده: دانشگاه علوم پزشکی زاهدان (Zahedan university of medical sciences)
سیده هدا علوی زاده | seyedeh hoda alavizadeh
nanotechnology research center, school of pharmacy, mashhad university of medical sciences, mashhad, iran
سازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (Mashhad university of medical sciences)
اعظم عباسی | azam abbasi
nanotechnology research center, school of pharmacy, mashhad university of medical sciences, mashhad, iran
سازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (Mashhad university of medical sciences)
زهرا صابری | zahra saberi
nanotechnology research center, school of pharmacy, mashhad university of medical sciences, mashhad, iran
سازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (Mashhad university of medical sciences)
امین رضا نیک پور | amin reza nikpoor
immunology department, school of medicine, mashhad university of medical sciences, mashhad, iran
سازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (Mashhad university of medical sciences)
محمودرضا جعفری | mahmoud reza jaafari
biotechnology research center, nanotechnology research center, school of pharmacy, mashhad university of medical sciences, mashhad, iran
سازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (Mashhad university of medical sciences)
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