Evidence map›Paper›PMID 31487278›Full record

ArticlePLoS biology2019

The cat is out of the bag: How parasites know their hosts.

Elizabeth D English, Boris Striepen

Open access · goldAbstract readComment
In one paragraph

Article in PLoS biology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
1.0field-weighted citation impact, top 28% 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

6 citing papers in PubMed, 17 citations in OpenAlex.

  1. Lymphotoxin beta receptorInfection and immunity · 2025
    Article
  2. Article
  3. Review
  4. Article
  5. Public health challenges · 2023
    Article
  6. A decreasing trend inExperimental and therapeutic medicine · 2020
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

2 authors at 1 institution in 1 country.

Elizabeth D EnglishDepartment of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America.ORCID 0000-0002-2246-8697
Boris StriepenDepartment of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America.ORCID 0000-0002-7426-432X
University of Pennsylvania · US

Funding

Sexual Development of CryptosporidiumR01AI127798 · NIAID · UNIVERSITY OF PENNSYLVANIA · PI STRIEPEN, BORIS · 2017 to 2025
$4.1M
NIAID NIH HHS R01 AI127798
6 · The paper itself

Abstract

Toxoplasma gondii is a remarkably successful protozoan parasite that infects a third of the human population, along with most mammals and birds. However, the sexual portion of the parasite's life cycle is narrowly limited to cats. How parasites distinguish between hosts has long been a mystery. A new study reveals that Toxoplasma identifies cats based on a single fatty acid, linoleic acid. Experimental manipulation of fatty acid metabolism by drug treatment turns a mouse into a cat in the "eye" of the parasite. This new model enables genetic crosses of an important human pathogen without the use of companion animals and opens the door to future discovery.

Indexed as

ParasitesToxoplasmaAnimalsCatsHost SpecificityHumansLife Cycle StagesLinoleoyl-CoA DesaturaseMiceLinoleoyl-CoA Desaturase

Identifiers

PMID31487278
PMCPMC6748446
OpenAlexW2971427981

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.