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Leishmania–sand fly interactions: exploring the role of the immune response and potential strategies for Leishmaniasis control

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Abstract

Leishmaniasis is a neglected tropical disease caused by protozoan parasites of the genus Leishmania, affecting millions of people worldwide. The disease is transmitted by the bite of infected female sand flies, which act as vectors and hosts for the parasites. The interaction between Leishmania parasites and sand flies is complex and dynamic, involving various factors that influence parasite development, survival and transmission. This review examines how the immune response of sand flies affects vector competence and transmission of Leishmania parasites, and what the potential strategies are to prevent or reduce infection. The review also summarizes the main findings and conclusions of the existing literature and discusses implications and recommendations for future research and practice. The study reveals that the immune response of sand flies is a key determinant of vector competence and transmission of Leishmania parasites, and that several molecular and cellular mechanisms are involved in the interaction between parasite and vector. The study also suggests that there are potential strategies for controlling leishmaniasis, such as interfering with parasite development, modulating the vector's immune response or reducing the vector population. However, the study also identifies several gaps and limitations in current knowledge and calls for more comprehensive and systematic studies on vector-parasite interaction and its impact on leishmaniasis transmission and control.

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Acknowledgements

The authors thank the Public Health Image Library (PHIL) of the Centers for Disease Control and Prevention (CDC) for providing some of the images used in this paper.

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This research received no external funding.

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Contributions

Rachid Sabbahi: Conceptualization, Data curation, Supervision, Validation, Formal Analysis, Writing—Original Draft, Visualization; Virginia Hock, Khalil Azzaoui and Belkheir Hammouti: Project administration, Investigation, and Writing review & editing.

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Correspondence to Rachid Sabbahi.

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Sabbahi, R., Hock, V., Azzaoui, K. et al. Leishmania–sand fly interactions: exploring the role of the immune response and potential strategies for Leishmaniasis control. J Parasit Dis (2024). https://doi.org/10.1007/s12639-024-01684-0

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  • DOI: https://doi.org/10.1007/s12639-024-01684-0

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