Evidence map›Paper›PMID 39689121›Full record

ArticlePLoS neglected tropical diseases2024

Thermosensory behaviors of the free-living life stages of Strongyloides species support parasitism in tropical environments.

Ben T Gregory, Mariam Desouky, Jaidyn Slaughter, Elissa A Hallem, Astra S Bryant

Abstract read
In one paragraph

Article in PLoS neglected tropical diseases, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
–field-weighted citation impact
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

2 citing papers in PubMed.

  1. Article
  2. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors.

Ben T GregoryDepartment of Neurobiology and Biophysics, University of Washington, Seattle, Washington, United States of America.
Mariam DesoukyDepartment of Neurobiology and Biophysics, University of Washington, Seattle, Washington, United States of America.
Jaidyn SlaughterBRIGHT-UP Summer Research Program, University of Washington School of Medicine, Seattle, Washington, United States of America.
Elissa A HallemDepartment of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles, Los Angeles, California, United States of America.
Astra S BryantDepartment of Neurobiology and Biophysics, University of Washington, Seattle, Washington, United States of America.ORCID 0000-0002-0887-2044

Funding

Washington National Primate Research CenterP51OD010425 · OD · UNIVERSITY OF WASHINGTON · PI Mari Ostendorf · 2012 to 2026
$201.8M
Thermosensation in skin-penetrating parasitic nematodesR01AI136976 · NIAID · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI HALLEM, ELISSA ANYON · 2019 to 2022
$2.6M
Dissecting the thermosensory biology of soil-transmitted parasitic nematodesDP2AI184544 · NIAID · UNIVERSITY OF WASHINGTON · PI Astra Shamgar Bryant · 2024 to 2026
$1.4M
NIAID NIH HHS DP2 AI184544NIAID NIH HHS R01 AI136976NIH HHS P51 OD010425
6 · The paper itself

Abstract

Soil-transmitted parasitic nematodes infect over 1 billion people worldwide and are a common source of neglected disease. Strongyloides stercoralis is a potentially fatal skin-penetrating human parasite that is endemic to tropical and subtropical regions around the world. The complex life cycle of Strongyloides species is unique among human-parasitic nematodes in that it includes a single free-living generation featuring soil-dwelling, bacterivorous adults whose progeny all develop into infective larvae. The sensory behaviors that enable free-living Strongyloides adults to navigate and survive soil environments are unknown. S. stercoralis infective larvae display parasite-specific sensory-driven behaviors, including robust attraction to mammalian body heat. In contrast, the free-living model nematode Caenorhabditis elegans displays thermosensory behaviors that guide adult worms to stay within a physiologically permissive range of environmental temperatures. Do S. stercoralis and C. elegans free-living adults, which experience similar environmental stressors, display common thermal preferences? Here, we characterize the thermosensory behaviors of the free-living adults of S. stercoralis as well as those of the closely related rat parasite, Strongyloides ratti. We find that Strongyloides free-living adults are exclusively attracted to near-tropical temperatures, despite their inability to infect mammalian hosts. We further show that lifespan is shorter at higher temperatures for free-living Strongyloides adults, similar to the effect of temperature on C. elegans lifespan. However, we also find that the reproductive potential of the free-living life stage is enhanced at warmer temperatures, particularly for S. stercoralis. Together, our results reveal a novel role for thermotaxis to maximize the infectious capacity of obligate parasites and provide insight into the biological adaptations that may contribute to their endemicity in tropical climates.

Indexed as

Strongyloides stercoralisTropical ClimateAnimalsCaenorhabditis elegansFemaleHumansLarvaLife Cycle StagesMaleStrongyloides rattiStrongyloidiasisTemperatureThermosensing

Identifiers

PMID39689121
PMCPMC11687888

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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.