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Assessment of Leishmania Virulence within Cultured Macrophages

This video investigates Leishmania's virulence by treating macrophages with metacyclic promastigotes, resulting in the formation of intracellular amastigotes. The confirmation of Leishmania's virulence is achieved through nucleic acid fluorescent dye staining. This insight can contribute to the development of new therapies for leishmaniasis.

All procedures involving animal models have been reviewed by the local institutional animal care committee and the JoVE veterinary review board.

1. Isolation and Differentiation of Bone Marrow-derived Macrophages (BMMs)

  1. Day 0: Sacrifice 4 - 6-week-old female C57BL/6 or BALB/c mouse in a CO2 chamber and confirm death via cervical dislocation. Ensure sterilization of scissors and forceps by k.......

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Figure 1
Figure 1: A representative illustration of BMM infection with virulent axenic amastigotes (A) and non-virulent log-phase promastigotes (B) of L. amazonensis. Immunofluorescence images of macrophages isolated from BALB/c mice, 1 h and 48 h following infection. Infected macrophages were processed for immunofluorescence as described in the protocol. PV membranes.......

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