Evidence map›Paper›PMID 30547741›Full record

ArticleBMC genomics2018

Daphnia galeata responds to the exposure to an ichthyosporean gut parasite by down-regulation of immunity and lipid metabolism.

Yameng Lu, Paul R Johnston, Stuart R Dennis, Michael T Monaghan, Uwe John, Piet Spaak, Justyna Wolinska

Open access · goldAbstract read
In one paragraph

Article in BMC genomics, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
1.0field-weighted citation impact, top 26% 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

8 citing papers in PubMed, 14 citations in OpenAlex.

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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

7 authors at 4 institutions in 2 countries.

Yameng LuLeibniz Institute of Freshwater Ecology and Inland Fisheries (IGB), Berlin, Germany. yameng.lu@igb-berlin.de.
Paul R JohnstonLeibniz Institute of Freshwater Ecology and Inland Fisheries (IGB), Berlin, Germany.
Stuart R DennisSwiss Federal Institute of Aquatic Science and Technology (Eawag), Dübendorf, Switzerland.
Michael T MonaghanLeibniz Institute of Freshwater Ecology and Inland Fisheries (IGB), Berlin, Germany.
Uwe JohnAlfred Wegener Institut Helmholtz Zentrum für Polar und Meeresforschung (AWI), Bremerhaven, Germany.
Piet SpaakSwiss Federal Institute of Aquatic Science and Technology (Eawag), Dübendorf, Switzerland.
Justyna WolinskaLeibniz Institute of Freshwater Ecology and Inland Fisheries (IGB), Berlin, Germany.
Leibniz Institute of Freshwater Ecology and Inland Fisheries · DESwiss Federal Institute of Aquatic Science and Technology · CHAlfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung · DEFreie Universität Berlin · DE

Funding

Deutsche Forschungsgemeinschaft WO 1587/6-1Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung 310030L 166628
6 · The paper itself

Abstract

backgroundRegulatory circuits of infection in the emerging experimental model system, water flea Daphnia and their microparasites, remain largely unknown. Here we provide the first molecular insights into the response of Daphnia galeata to its highly virulent and common parasite Caullerya mesnili, an ichthyosporean that infects the gut epithelium. We generated a transcriptomic dataset using RNAseq from parasite-exposed (vs. control) Daphnia, at two time points (4 and 48 h) after parasite exposure.

resultsWe found a down-regulation of metabolism and immunity-related genes, at 48 h (but not 4 h) after parasite exposure. These genes are involved in lipid metabolism and fatty acid biosynthesis, as well as microbe recognition (e.g. c-type lectins) and pathogen attack (e.g. gut chitin).

conclusionsGeneral metabolic suppression implies host energy shift from reproduction to survival, which is in agreement with the known drastic reduction in Daphnia fecundity after Caullerya infection. The down-regulation of gut chitin indicates a possible interaction between the peritrophic matrix and the evading host immune system. Our study provides the first description of host transcriptional responses in this very promising host-parasite experimental system.

Indexed as

AnimalsDaphniaDown-RegulationFatty Acid SynthasesHost-Parasite InteractionsImmune SystemIntestinesLipid MetabolismMesomycetozoeaRNASequence Analysis, RNATranscriptomeFatty Acid SynthasesRNADaphniaDifferential expressionHost-parasite interactionImmune responseRNAseq

Identifiers

PMID30547741
PMCPMC6295042
OpenAlexW2903845890

What OpenQuestion holds

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LicenceCC BY
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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.