ArticleJournal of parasitic diseases : official organ of the Indian Society for Parasitology2016
Evaluation of s.c. route of immunization by homologous radio attenuated live vaccine in experimental murine model of visceral leishmaniasis.
Article in Journal of parasitic diseases : official organ of the Indian Society for Parasitology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed.
- In vivo experiments demonstrate the potent antileishmanial efficacy of repurposed suramin in visceral leishmaniasis.PLoS neglected tropical diseases · 2020Article
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5 authors.
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No grant is acknowledged in the PubMed record.
Abstract
Our previous studies in BALB/c mice showed substantial protection against the experimental murine visceral leishmaniasis (MVL) when the animals were immunized with γ-irradiated live Leishmania donovani parasites through intra peritoneal (i.p.) and intra muscular (i.m.) routes respectively. The observations encouraged us to check the prophylactic efficacy of subcutaneous (s.c.) route as it is better alternative for human trial. The mice immunized with two subsequent doses of the radio attenuated homologous vaccine were challenged with virulent L. donovani parasites. Seventy-five days post infection, the animals were sacrificed. The extent of protection against the disease was evaluated by assessing the reduction of parasite burden in spleen and liver, the generation of free radicals (NO & ROS) and release of the cytokines from T-lymphocyte helper 1 (Th 1) and T-lymphocyte helper 2 (Th 2) along with the measurement of the serum immunoglobulins. The reductions in parasitic burden were observed up to 21 and 24 % in spleen and liver of the immunized groups with NO and ROS productions 27 and 34 % respectively. Whereas the increase in IFN gamma releases was between 19 and 34 %, the decrease in IL-10 release was not more than 22 %. This indicates the failure of the establishment of pronounced Th1 ambience which was further corroborated by the observed IgG2a and IgG1 ratio. The present study when compared with our previous observations with i.m. and i.p. routes revealed that s.c. route may not be a good choice for the use of radio attenuated vaccine.
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