Evidence map›Paper›PMID 30657796›Full record

ArticlePloS one2019

Interaction of Treponema pallidum, the syphilis spirochete, with human platelets.

Brigette Church, Erika Wall, John R Webb, Caroline E Cameron

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
1.6field-weighted citation impact, top 17% 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

14 citing papers in PubMed, 28 citations in OpenAlex.

  1. Frontiers in immunology · 2026
    Review
  2. Review
  3. Article
  4. Time-course transcriptomics reveals the impact ofFrontiers in microbiology · 2025
    Article
  5. Article
  6. Article
  7. Detection of Treponema pallidum DNA During Early Syphilis Stages in Peripheral Blood, Oropharynx, Ano-Rectum and Urine as a Proxy for Transmissibility.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2022
    Article
  8. Article
  9. Article
  10. Review
  11. Review
  12. Article
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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

4 authors at 2 institutions in 1 country.

Brigette ChurchDepartment of Biochemistry and Microbiology, University of Victoria, Victoria, BC, Canada.ORCID 0000-0003-0054-7607
Erika WallDepartment of Biochemistry and Microbiology, University of Victoria, Victoria, BC, Canada.
John R WebbDepartment of Biochemistry and Microbiology, University of Victoria, Victoria, BC, Canada.
Caroline E CameronDepartment of Biochemistry and Microbiology, University of Victoria, Victoria, BC, Canada.ORCID 0000-0002-8786-4359
University of Victoria · CABC Cancer Agency · CA

Funding

Extracellular Matrix Adhesins of Treponema pallidumR01AI051334 · NIAID · UNIVERSITY OF WASHINGTON · PI CAMERON, CAROLINE E · 2002 to 2017
$3.4M
Extracellular Matrix Adhesins of Treponema pallidumR37AI051334 · NIAID · UNIVERSITY OF VICTORIA · PI CAROLINE E CAMERON · 2019 to 2026
$2.3M
NIAID NIH HHS R01 AI051334NIAID NIH HHS R37 AI051334
6 · The paper itself

Abstract

Extracellular bacteria that spread via the vasculature employ invasive mechanisms that mirror those of metastatic tumor cells, including intravasation into the bloodstream and survival during hematogenous dissemination, arrestation despite blood flow, and extravasation into distant tissue sites. Several invasive bacteria have been shown to exploit normal platelet function during infection. Due to their inherent ability to interact with and influence other cell types, platelets play a critical role in alteration of endothelial barrier permeability, and their role in cancer metastasis has been well established. The highly invasive bacterium and causative agent of syphilis, Treponema pallidum subspecies pallidum, readily crosses the endothelial, blood-brain and placental barriers. However, the mechanisms underlying this unusual and important aspect of T. pallidum pathogenesis are incompletely understood. In this study we use darkfield microscopy in combination with flow cytometry to establish that T. pallidum interacts with platelets. We also investigate the dynamics of this interaction and show T. pallidum is able to activate platelets and preferentially interacts with activated platelets. Platelet-interacting treponemes consistently exhibit altered kinematic (movement) parameters compared to free treponemes, and T. pallidum-platelet interactions are reversible. This study provides insight into host cell interactions at play during T. pallidum infection and suggests that T. pallidum may exploit platelet function to aid in establishment of disseminated infection.

Indexed as

Blood PlateletsHost Microbial InteractionsHumansIn Vitro TechniquesMicroscopy, VideoMovementPlatelet ActivationRotationSyphilisTreponema pallidum

Identifiers

PMID30657796
PMCPMC6338379
OpenAlexW2910044494

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.