Evidence map›Paper›PMID 34090504›Full record

Trial reportParasites & vectors2021

Lack of detectable short-term effects of a single dose of ivermectin on the human immune system.

Natalie E Wilson, Barbara J Reaves, Adrian J Wolstenholme

Registry-linked trialOpen access · goldAbstract readClinical Trial, Phase IRandomized Controlled Trial
In one paragraph

Trial report in Parasites & vectors, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT03459794 (The Effects of Ivermectin on Human Innate Immunity Against Filarial Parasites), which is not on this map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
0.1field-weighted citation impact, top 52% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT03459794 early_phase1completednot on this map

The Effects of Ivermectin on Human Innate Immunity Against Filarial Parasites

TypeinterventionalSponsorUniversity of GeorgiaRan2018 to 2018Enrolled12ConditionsIvermectinArmsIvermectin, Placebo
3 · Its place in the literature

Who cites it

0 citing papers in PubMed, 2 citations in OpenAlex.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors at 1 institution in 2 countries.

Natalie E WilsonDepartment of Infectious Diseases, University of Georgia, Athens, GA, 30602, USA.
Barbara J ReavesDepartment of Infectious Diseases, University of Georgia, Athens, GA, 30602, USA.
Adrian J WolstenholmeDepartment of Infectious Diseases, University of Georgia, Athens, GA, 30602, USA. adrianw@uga.edu.ORCID http://orcid.org/0000-0001-7989-3929
University of Georgia · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIvermectin is widely used in human and animal medicine to treat and prevent parasite nematode infections. It has been suggested that its mode of action requires the host immune system, as it is difficult to reproduce its clinical efficacy in vitro. We therefore studied the effects of a single dose of ivermectin (Stromectol

methodsHealthy volunteers with no travel history to endemic regions were given 3-4 tablets, depending on their weight, of either ivermectin or a placebo. Blood samples were drawn immediately prior to administration, 4 h and 24 h afterwards, and complete blood counts performed. Serum levels of 41 cytokines and chemokines were measured using Luminex

resultsNo significant differences were observed in complete blood counts or cytokine levels at either time point between people given ivermectin versus placebo. Only three genes showed a significant change in expression in peripheral blood mononuclear cells 4 h after ivermectin was given; there were no significant changes 24 h after drug administration or in polymorphonuclear cells at either time point. Leukocytes isolated from those participants given ivermectin showed no difference in their ability to kill Brugia malayi microfilariae in vitro.

conclusionsOverall, our data do not support a direct effect of ivermectin, when given at the dose used in current filarial elimination programmes, on the human immune system. Trial registration ClinicalTrials.gov NCT03459794 Registered 9th March 2018, Retrospectively registered https://clinicaltrials.gov/ct2/show/NCT03459794?term=NCT03459794&draw=2&rank=1 .

Indexed as

AdolescentAdultAgedAnimalsAntiparasitic AgentsBrugia malayiCytokinesGene ExpressionHuman ExperimentationHumansImmunity, InnateIvermectinLeukocytes, MononuclearMiddle AgedNeutrophilsYoung AdultAntiparasitic AgentsCytokinesIvermectinCytokineIvermectinLymphatic filariasisPeripheral blood mononuclear cellsPolymorphonuclear cells

Identifiers

PMID34090504
PMCPMC8179708
OpenAlexW3172282651

What OpenQuestion holds

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Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.