Evidence map›Paper›PMID 14745044›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2004

Disruption of Ixodes scapularis anticoagulation by using RNA interference.

Sukanya Narasimhan, Ruth R Montgomery, Kathleen DePonte, Christian Tschudi, Nancy Marcantonio, John F Anderson, John R Sauer, Michael Cappello, Fred S Kantor, Erol Fikrig

Open access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 63 papers.

0numbers the graph read from it
0cells of the map it votes in
63citing papers in PubMed
8.5field-weighted citation impact, top 1% 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

63 citing papers in PubMed, 127 citations in OpenAlex.

  1. Research square · 2026
    Article
  2. Article
  3. Article
  4. Article
  5. Impact ofFrontiers in immunology · 2024
    Article
  6. Article
  7. Article
  8. The Impact of RNA Interference in Tick Research.Pathogens (Basel, Switzerland) · 2022
    Article
  9. Article
  10. Article
  11. Article
  12. Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Interactions between Borrelia burgdorferi and ticks.Nature reviews. Microbiology · 2020
    Review
  18. p47 licenses activation of the immune deficiency pathway in the tickProceedings of the National Academy of Sciences of the United States of America · 2019
    Article
  19. Review
  20. Article

3 more citing papers are in PubMed but not listed here.

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

10 authors at 3 institutions in 1 country.

Sukanya NarasimhanSections of Rheumatology, Department of Internal Medicine, Yale University School of Medicine, New Haven, CT 06520, USA.
Ruth R Montgomery
Kathleen DePonte
Christian Tschudi
Nancy Marcantonio
John F Anderson
John R Sauer
Michael Cappello
Fred S Kantor
Erol Fikrig
Connecticut Agricultural Experiment Station · USOklahoma State University · USYale University · US

Funding

LYME DISEASE--HOST PARASITE INTERACTIONSR01AI043558 · NIAID · YALE UNIVERSITY · PI MALAWISTA, STEPHEN E. · 1999 to 2003
$1.3M
Mechanism of Vector Saliva Inhibition of Innate ImmunityR21AI069156 · NIAID · YALE UNIVERSITY · PI MONTGOMERY, RUTH R · 2006 to 2007
$444k
NIAID NIH HHS R01 AI043558NIAID NIH HHS R21 AI069156
6 · The paper itself

Abstract

Ixodes scapularis ticks transmit many pathogens, including Borrelia burgdorferi, Anaplasma phagocytophilum, and Babesia microti. Vaccines directed against arthropod proteins injected into the host during tick engorgement could prevent numerous infectious diseases. Salp14, a salivary anticoagulant, poses a key target for such intervention. Salp14 is the prototypic member of a family of potential I. scapularis anticoagulants, expressed and secreted in tick saliva during tick feeding. RNA interference was used to assess the role of Salp14 in tick feeding. Salp14 and its paralogs were silenced, as demonstrated by the reduction of mRNA and protein specific for these antigens. Tick salivary glands lacking Salp14 had reduced anticoagulant activity, as revealed by a 60-80% reduction of anti-factor Xa activity. Silencing the expression of salp14 and its paralogs also reduced the ability of I. scapularis to feed, as demonstrated by a 50-70% decline in the engorgement weights. Because ticks have several anticoagulants, it is likely that the expression of multiple anticoagulants in I. scapularis saliva would have to be ablated simultaneously to abolish tick feeding. These studies demonstrate that RNA interference can silence I. scapularis genes and disrupt their physiologic function in vivo, and they identify vaccine candidates that can alter vector engorgement.

Indexed as

AnticoagulantsRNA InterferenceActinsAnimalsAntithrombin IIIBlotting, NorthernBlotting, WesternGene SilencingHumansIxodesMiceMice, Inbred C3HMicroscopy, ConfocalSalivary Proteins and PeptidesActinsAnticoagulantsAntithrombin IIISalivary Proteins and Peptides

Identifiers

PMID14745044
PMCPMC337020
OpenAlexW1984184713

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.