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. Author manuscript; available in PMC: 2022 Jan 1.
Published in final edited form as: Trends Parasitol. 2020 Nov 11;37(1):48–64. doi: 10.1016/j.pt.2020.10.005

Table 1.

Experimental Settings for Studying the Effects of Ivermectin on Ion Channels, FXR, NHR-8, Viruses, Malaria, Cancer, and Asthma

Target Experimental preparation Concentration: ng/ml (nM) Refs and comment
AVR-15b Haemonchus contortus channel opening HEK293 expressed EC50 19 (22 nM) [28]
Abamectin on GluCls of Ascaris suum pharynx inhibition Dissected whole worm pharynx EC50 350 (400 nM) [37]
Brugia malayi mf protein release, ES inhibition by Bma-AVR-14A GluCl Whole Brugia and microfilaria <88 (<100 nM) [31]
Downregulation of B. malayi meiosis genes Whole Brugia <88 (<100 nM) [8]
A. suum GABA ion-channel inhibition Dissected preparation <175 (<200 nM) [27]
Histamine-gated Cl channel activation Expressed channel from Drosophila melanogaster 875 (1000 nM) used [33]
pH-gated Cl channel activation Sarcoptes scabiei oocyte expressed receptor Single conc 10 000 (11 429 nM) [34]
Nematode nAChRs Expressed channels and A. suum preparation EC50 368 (420 nM) [35,37]
FXR activation and transcription FXR and ivermectin Crystal structure and mice, serum glucose and cholesterol decrease 1300 μg/kg per day for 14 days [6972]
Repurpose or find more potent analog
NHR-8 transcription factor NHR-8 of Caenorhabditis elegans and H. contortus Knockout in C. elegansreduced ∼2 LDA (from 1.63 to 0.96 nM) [104]
Low level of resistance
Dengue; West Nile virus; Venezuelan equine encephalitis virus inhibition Tissue culture inhibition transport into by nuclear importin α/β1 IC50s 875–3500 (1000–4000 nM) [5561]
More potent analog required to be effective
SARS-Covid-2 inhibition Tissue culture 4375 (5000 nM), ∼ 100× [107]
Plasmodium inhibition Culture: inhibition of Plasmodium in liver inhibits nuclear import of signal recognition particles of P. falciparum IC50 ∼438 (∼500 nM) [6567]
More potent analog required to be effective. Ivermectin has effects on mosquitoes
Cancer Tissue culture and mice experiments by different mechanisms <8000 nM [76,77,7983,105]
High concentrations required for effects
Asthma Mice: reduction of cellular and humoral responses to antigen in asthma model 2000 μg/kg [89]
High μg/kg dose