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Evaluation of alum-naltrexone adjuvant activity, on efficacy of anti-leishmania immunization with autoclaved leishmania major [MRHO/IR/75/ER] antigens in BALB/C mice
Iranian Journal of Parasitology. 2014; 9 (3): 311-318
in English | IMEMR | ID: emr-153312
ABSTRACT
Naltrexone, an opioid receptor antagonist shifts the immune response toward a Th1 profile. In the current study, we evaluated the efficacy of the mixture of NTX and alum, as a new adjuvant, to enhance immune response and induce protection against Leishmania major in a mouse model. BALB/c mice were immunized three times either autoclaved L. major promastigotes' antigens alone or in combination with the adjuvant alum, naltrexone or the alum-naltrexone mixture. Both humoral and cellular immune responses were assessed two weeks after the last immunization and compared with control mice. The administration of alum- NTX in combination with the parasite antigen, significantly increased production of IFN- gamma, IFN-gamma /IL-5 ratio, lymphocyte proliferation and improved DTH response against L. major. There was no significant difference in survival following challenge among groups. Immunization with the alum- naltrexone mixture as an adjuvant, in combination with the autoclaved L. major promastigotes antigens, can enhance cellular immunity and shift the immune responses to a Th1 pattern
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Index: IMEMR (Eastern Mediterranean) Language: English Journal: Iran. J. Parasitol. Year: 2014

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Index: IMEMR (Eastern Mediterranean) Language: English Journal: Iran. J. Parasitol. Year: 2014