Evidence map›Paper›PMID 15102787›Full record

ArticleInfection and immunity2004

Differential regulation of beta-defensin gene expression during Cryptosporidium parvum infection.

Tarek K Zaalouk, Mona Bajaj-Elliott, John T George, Vincent McDonald

Open access · greenAbstract read
In one paragraph

Article in Infection and immunity, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers.

0numbers the graph read from it
0cells of the map it votes in
42citing papers in PubMed
5.1field-weighted citation impact, top 4% 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

42 citing papers in PubMed, 104 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. Dendritic Cells andMicroorganisms · 2023
    Review
  5. Early immune and host cell responses toFrontiers in parasitology · 2023
    Article
  6. An update onJournal of parasitic diseases : official organ of the Indian Society for Parasitology · 2022
    Review
  7. Article
  8. Review
  9. Review
  10. The Mucosal Innate Immune Response toFrontiers in cellular and infection microbiology · 2021
    Review
  11. Microorganisms · 2020
    Article
  12. Article
  13. Article
  14. Review
  15. Review
  16. Article
  17. Review
  18. Review
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  20. Review
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.

Tarek K ZaaloukDepartment of Adult and Paediatric Gastroenterology, Barts and the London School of Medicine, London, United Kingdom.
Mona Bajaj-Elliott
John T George
Vincent McDonald

Funding

Wellcome Trust
6 · The paper itself

Abstract

Invasion of enterocytes by pathogenic microbes evokes both innate and adaptive immune responses, and microbial pathogens have developed strategies to overcome the initial host immune defense. beta-Defensins are potentially important endogenous antibiotic-like effectors of innate immunity expressed by intestinal epithelia. In this study, the interplay between the enteric protozoan parasite Cryptosporidium parvum and host epithelial beta-defensin expression was investigated. Using human and murine models of infection, we demonstrated that C. parvum infection differentially regulates beta-defensin gene expression. Downregulation of murine beta-defensin-1 mRNA and protein was observed in both in vitro and in vivo models of infection. Infection of the human colonic HT29 cell line with the parasite resulted in differential effects on various members of the defensin gene family. Partial reduction in human beta-defensin-1 (hBD-1), induction of hBD-2, and no effect on hBD-3 gene expression was observed. Recombinant hBD-1 and hBD-2 peptides exhibited significant antimicrobial activity against C. parvum sporozoites in vitro. These findings demonstrate that C. parvum infection of enterocytes may affect the expression of various defensins in different ways and suggest that the overall outcome of the effect of antimicrobial peptides on early survival of the parasite may be complex.

Indexed as

Cryptosporidium parvumAnimalsbeta-DefensinsCell LineCryptosporidiosisCytokinesDown-RegulationGene Expression RegulationHumansInflammation MediatorsInterferon-gammaMiceMice, Inbred BALB CMice, Inbred C57BLMice, KnockoutRNA, Messengerbeta-DefensinsCytokinesInflammation MediatorsInterferon-gammaRNA, Messenger

Identifiers

PMID15102787
PMCPMC387892
OpenAlexW2100864093

What OpenQuestion holds

Textmetadata
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.