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• W2983358669 endingPage "106390" @default.
• W2983358669 startingPage "106390" @default.
• W2983358669 abstract "Infection with L. donovani affects mainly visceral organs. Importantly, the parasitic load differs in different visceral organs; therefore there is a need to understand the organ specific immune regulation, particularly in the spleen and liver. Comparative studies between these organs in Leishmania infected hamster (Mesocricetus auratus) are lacking. Our study highlights the importance of eicosanoids in the organ specific pathology of visceral leishmaniasis. Among other immune cells, macrophages (mφ) which harbor Leishmania parasite are major producers of eicosanoids. In this study, we intend to explore linkage between organ specific immune response and eicosanoids. We suggest that eicosanoids (early immune modulators) and their organ specific expressions, possibly tune the outcome of mφ differently at different sites. We have observed that liver showed better containment of parasitic load than spleen, where we have found higher expression of 5-lipoxygenase (5-LO) enzyme along with IL-12 and iNOS. However, in spleen, enzymes of the PGE2 pathway i.e. PGE2 synthases (cytosolic and microsomal) along with IL-10 were predominantly higher. To further corroborate our findings, in vitro assays were carried out using purified eicosanoids (LTB4 and PGE2) and the inhibitors of these pathways. Findings establish that the 5-lipoxygenase pathway (i.e. LTB4) is anti-parasitic and its inhibition increases the parasitic load (qPCR based kDNA detection). On the contrary, PGES pathway (i.e. PGE2) supports establishment of infection in mφ. Taken together, 5-LO pathway plays a protective role in liver during L. donovani infection. However, the PGES pathway favors the parasite growth, particularly in the spleen at a later stage." @default.
• W2983358669 created "2019-11-22" @default.
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• W2983358669 date "2020-04-01" @default.
• W2983358669 modified "2023-10-17" @default.
• W2983358669 title "Parasitic load determination by differential expressions of 5-lipoxygenase and PGE2 synthases in visceral leishmaniasis" @default.
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• W2983358669 doi "https://doi.org/10.1016/j.prostaglandins.2019.106390" @default.
• W2983358669 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/31726220" @default.
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