Evidence map›Paper›PMID 27514777›Full record

ArticleBMC genomics2016

The influence of trematode parasite burden on gene expression in a mammalian host.

Bhagya K Wijayawardena, Dennis J Minchella, J Andrew DeWoody

Open access · goldAbstract read
In one paragraph

Article in BMC genomics, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
1.4field-weighted citation impact, top 20% 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

4 citing papers in PubMed, 12 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

3 authors at 2 institutions in 2 countries.

Bhagya K WijayawardenaDepartment of Biological Sciences, Purdue University, West Lafayette, Indiana, 47907, USA. bhagya.wijayawardena@gmail.com.
Dennis J MinchellaDepartment of Biological Sciences, Purdue University, West Lafayette, Indiana, 47907, USA.
J Andrew DeWoodyDepartment of Biological Sciences, Purdue University, West Lafayette, Indiana, 47907, USA.
Purdue University West Lafayette · USDepartment of Forestry · MW

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundParasites can profoundly impact their hosts and are responsible for a plethora of debilitating diseases. To identify global changes in host gene expression related to parasite infection, we sequenced, assembled, and annotated the liver transcriptomes of Balb/cj mice infected with the trematode parasite Schistosoma mansoni and compared the results to uninfected mice. We used two different methodologies (i.e. de novo and reference guided) to evaluate the influence of parasite sequences on host transcriptome assembly.

resultsOur results demonstrate that the choice of assembly methodology significantly impacted the proportion of parasitic reads detected from the host library, yet the presence of non-target (xenobiotic) sequences did not create significant structural errors in the assembly. After removing parasite sequences from the mouse transcriptomes, we analyzed host gene expression under different parasite infection levels and observed significant differences in the associated immunologic and metabolic responses based on infection level. In particular, genes associated with T-helper type 1 (Th-1) and T-helper type 2 (Th-2) were up-regulated in infected mice whereas genes related to amino acid and carbohydrate metabolism were down-regulated in infected mice. These changes in gene expression scale with infection status and likely impact the evolutionary fitness of hosts.

conclusionsOverall, our data indicate that a) infected mice reduce the expression of key metabolic genes in direct proportion to their infection level; b) infected mice similarly increase the expression of key immune genes in response to infection; c) patterns of gene expression correspond to the pathological symptoms of schistosomiasis; and d) identifying and filtering out non-target sequences (xenobiotics) improves differential expression prediction. Our findings identify parasite targets for RNAi or other therapies and provide a better understanding of the pathology and host immune repertoire involved in response to S. mansoni infections.

Indexed as

Host-Parasite InteractionsAmino AcidsAnimalsCarbohydrate MetabolismCercariaGene Expression ProfilingGene Expression RegulationGene LibraryImmunity, InnateLiverMaleMiceMice, Inbred BALB CParasite LoadSchistosoma mansoniSchistosomiasis mansoniAmino AcidsDifferential expressionIllumina HiSeqImmune responseNon-target sequencesRNAseqSchistosoma mansoniXenobiotics

Identifiers

PMID27514777
PMCPMC4982272
OpenAlexW2511524017

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.