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A rare parasitic disease caused by free-living amoebae belonging to the <i>Acanthamoeba</i>, <i>Naegleria</i> and <i>Balamuthia</i> genera, that are able to survive in an autonomous state in all natural environments and can also parasitize humans. In immunosuppressed individuals <i>Acanthamoeba</i> genus contamination leads to granulomatous amoebic encephalitis (also reported in association with species of the <i>Balamuthia</i> genus) together with other problems including cardiac, cutaneous and
Metformin activates AMPK-ULK1 autophagy initiation while hydroxychloroquine blocks lysosomal acidification, creating a therapeutic window where amoebae cannot complete successful autophagosome-lysosome fusion. This traps intracellular amoebae in non-functional autophagosomes, preventing both replication and immune evasion.
Berberine inhibits complex I of the electron transport chain (NADH:ubiquinone oxidoreductase) in Acanthamoeba mitochondria while artesunate generates reactive oxygen species through iron-mediated cleavage, creating synergistic bioenergetic collapse. Berberine also disrupts amoebic adhesion by interfering with mannose-binding protein interactions.
Dihydroartemisinin induces ferroptosis in amoebic trophozoites through GPX4 inhibition and lipid peroxidation, while controlled iron availability via deferiprone modulation creates optimal conditions for artemisinin activation. This exploits amoebic vulnerability to iron-dependent oxidative death pathways.
Novel quinazoline derivatives selectively inhibit amoebic dihydrofolate reductase (DHFR) while echinocandin-like compounds disrupt β-1,3-glucan synthase in cyst wall formation. This dual approach targets both trophozoite folate metabolism and prevents encystation, the major resistance mechanism of free-living amoebae.
Withanoside IV and VI from Ashwagandha (Withania somnifera) and tinosporin from Guduchi (Tinospora cordifolia) enhance macrophage activation through TLR4-MyD88-NF-κB pathway upregulation, increasing IL-1β and TNF-α production for improved amoebic clearance while simultaneously providing hepatoprotection through Nrf2 activation.
Azadirachtin from neem disrupts amoebic cytoskeletal actin polymerization, curcumin from turmeric inhibits phospholipase A2 activity reducing membrane damage, while piperine enhances bioavailability and directly targets amoebic proteasome function. This combination addresses kapha dosha imbalance while providing multi-target anti-amoebic activity.
Baicalin and wogonin from Scutellaria baicalensis combined with berberine from Coptis chinensis inhibit amoebic HSP70 chaperone function while simultaneously activating complement C3 and C5 pathways. Saikosaponins enhance natural killer cell activity against infected cells through perforin-granzyme pathway activation.