Differential production of granulocyte-macrophage colony-stimulating factor by macrophages from mice susceptible and resistant to Leishmania mexicana amazonensis
1992
: The present results demonstrate that macrophages from mice susceptible to infection with Leishmania mexicana amazonensis sustain a higher production of granulocyte-macrophage colony-stimulating factor (GM-CSF) throughout the in vitro infection than macrophages from a resistant strain. Resident macrophages from BALB/c and C57B1/10 mice were infected with promastigotes of L. mexicana amazonensis and the amount of biologically active GM-CSF was measured in the supernatants collected at different times of infection. Measurements were made by bone marrow and GM-CSF/interleukin-3 addicted cell proliferation. Because GM-CSF is a disease-exacerbating cytokine, its differential production by infected macrophages may be one of the mechanisms defining resistance or susceptibility to a leishmanial infection.
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