Evidence map›Paper›PMID 31381563›Full record

ArticlePLoS neglected tropical diseases2019

In vivo kinetics of Wolbachia depletion by ABBV-4083 in L. sigmodontis adult worms and microfilariae.

Marc P Hübner, Marianne Koschel, Dominique Struever, Venelin Nikolov, Stefan J Frohberger, Alexandra Ehrens, Martina Fendler, Iliana Johannes, Thomas W von Geldern, Kennan Marsh and 6 more

Open access · goldAbstract read
In one paragraph

Article in PLoS neglected tropical diseases, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 1 pooled it
3.2field-weighted citation impact, top 8% 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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

21 citing papers in PubMed, 1 synthesis or guideline pooled it, 30 citations in OpenAlex.

  1. Pooled it
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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

16 authors at 4 institutions in 3 countries.

Marc P HübnerInstitute for Medical Microbiology, Immunology and Parasitology, University Hospital Bonn, Germany.ORCID 0000-0001-8885-418X
Marianne KoschelInstitute for Medical Microbiology, Immunology and Parasitology, University Hospital Bonn, Germany.
Dominique StrueverInstitute for Medical Microbiology, Immunology and Parasitology, University Hospital Bonn, Germany.
Venelin NikolovInstitute for Medical Microbiology, Immunology and Parasitology, University Hospital Bonn, Germany.
Stefan J FrohbergerInstitute for Medical Microbiology, Immunology and Parasitology, University Hospital Bonn, Germany.
Alexandra EhrensInstitute for Medical Microbiology, Immunology and Parasitology, University Hospital Bonn, Germany.
Martina FendlerInstitute for Medical Microbiology, Immunology and Parasitology, University Hospital Bonn, Germany.
Iliana JohannesInstitute for Medical Microbiology, Immunology and Parasitology, University Hospital Bonn, Germany.
Thomas W von GeldernGlobal Pharmaceutical Research and Development, AbbVie, North Chicago, Illinois, United States of America.
Kennan MarshGlobal Pharmaceutical Research and Development, AbbVie, North Chicago, Illinois, United States of America.
Joseph D TurnerCentre for Drugs and Diagnostics, Department of Tropical Disease Biology, Liverpool School of Tropical Medicine, Liverpool, United Kingdom.
Mark J TaylorCentre for Drugs and Diagnostics, Department of Tropical Disease Biology, Liverpool School of Tropical Medicine, Liverpool, United Kingdom.
Stephen A WardCentre for Drugs and Diagnostics, Department of Tropical Disease Biology, Liverpool School of Tropical Medicine, Liverpool, United Kingdom.
Kenneth PfarrInstitute for Medical Microbiology, Immunology and Parasitology, University Hospital Bonn, Germany.
Dale J KempfGlobal Pharmaceutical Research and Development, AbbVie, North Chicago, Illinois, United States of America.
Achim HoeraufInstitute for Medical Microbiology, Immunology and Parasitology, University Hospital Bonn, Germany.
University Hospital Bonn · DELiverpool School of Tropical Medicine · GBAbbVie (United States) · USFranciscan University of Steubenville · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Depletion of Wolbachia endosymbionts of human pathogenic filariae using 4-6 weeks of doxycycline treatment can lead to permanent sterilization and adult filarial death. We investigated the anti-Wolbachia drug candidate ABBV-4083 in the Litomosoides sigmodontis rodent model to determine Wolbachia depletion kinetics with different regimens. Wolbachia reduction occurred in mice as early as 3 days after the initiation of ABBV-4083 treatment and continued throughout a 10-day treatment period. Importantly, Wolbachia levels continued to decline after a 5-day-treatment from 91.5% to 99.9% during a 3-week washout period. In jirds, two weeks of ABBV-4083 treatment (100mg/kg once-per-day) caused a >99.9% Wolbachia depletion in female adult worms, and the kinetics of Wolbachia depletion were recapitulated in peripheral blood microfilariae. Similar to Wolbachia depletion, inhibition of embryogenesis was time-dependent in ABBV-4083-treated jirds, leading to a complete lack of late embryonic stages (stretched microfilariae) and lack of peripheral microfilariae in 5/6 ABBV-4083-treated jirds by 14 weeks after treatment. Twice daily treatment in comparison to once daily treatment with ABBV-4083 did not significantly improve Wolbachia depletion. Moreover, up to 4 nonconsecutive daily treatments within a 14-dose regimen did not significantly erode Wolbachia depletion. Within the limitations of an animal model that does not fully recapitulate human filarial disease, our studies suggest that Wolbachia depletion should be assessed clinically no earlier than 3-4 weeks after the end of treatment, and that Wolbachia depletion in microfilariae may be a viable surrogate marker for the depletion within adult worms. Furthermore, strict daily adherence to the dosing regimen with anti-Wolbachia candidates may not be required, provided that the full regimen is subsequently completed.

Indexed as

AnimalsAnti-Bacterial AgentsDoxycyclineFemaleFilariasisFilarioideaGerbillinaeKineticsMiceMice, Inbred BALB CMicrofilariaeModels, AnimalWolbachiaAnti-Bacterial AgentsDoxycycline

Identifiers

PMID31381563
PMCPMC6695197
OpenAlexW2966671547

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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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.