Naltrexone; as an efficient adjuvant in induction of Th1 immunity and protection against Fasciola hepatica infection

Azizi, Hakim. and Mirzaeei, Hadi. and Nasiri, Ali Akbar. and Bazi, Ali. and Mirzapour, Aliyar. and Khatami, Mehrdad. and Hatam Nahavandi, Kareem. and Azimi, Ako. and Yaghoobi, Hajar. (2018) Naltrexone; as an efficient adjuvant in induction of Th1 immunity and protection against Fasciola hepatica infection. Experimental Parasitology., 189.


Download (769kB) | Preview


Toxic effects of available therapeutics are major drawbacks for conventional management approaches in parasitic infections. Vaccines have provided a promising opportunity to obviate such unwanted complications. In present study, we examined immune augmenting capacities of an emerging adjuvant, Naltrexone, against Fasciola hepatica infection in BALB/c mice. Seventy BALB/c mice were divided into five experimental groups (14 mice per group) including 1- control (received PBS), 2- vaccine (immunized with F. hepatica E/S antigens), 3- Alum-vaccine (immunized with Alum adjuvant and E/S antigens), 4- NLT-vaccine (immunized with NLT adjuvant and E/S antigens), and 5- Alum-NLT-vaccine (immunized with mixed Alum-NLT adjuvant and E/S antigens). Lymphocyte stimulation index was assessed by MTT assay. Production of IFN-γ, IL-4, IgG2a and IgG1 was assessed by ELISA method. Results showed that NLT, either alone or in combination with alum, can induce immune response toward production of IFN-γ and IgG2a as representatives of Th1 immune response. Also, using this adjuvant in immunization experiment was associated with significantly high proliferative response of splenocytes/lymphocytes. Utilization of mixed Alum-NLT adjuvant revealed the highest protection rate (73.8%) in challenge test of mice infected with F. hepatica. These findings suggest the potential role of NLT as an effective adjuvant in induction of protective cellular and Th1 immune responses against fasciolosis. © 2018 Elsevier Inc.

Item Type: Article
Uncontrolled Keywords: Naltrexone,Vaccination,Fasciolosis,Fasciola hepatica,Alum
Subjects: QV pharmacology
QW Microbiology and Immunology
Divisions: Reserach Vice-Chancellar Department > Cellular and Molecular Research Center
Depositing User: Users 1 not found.
Date Deposited: 28 Aug 2018 09:10
Last Modified: 28 Aug 2018 09:10

Actions (login required)

View Item View Item