Evidence map›Paper›PMID 9199470›Full record

ArticleInfection and immunity1997

Protective immunity against Clostridium difficile toxin A induced by oral immunization with a live, attenuated Vibrio cholerae vector strain.

E T Ryan, J R Butterton, R N Smith, P A Carroll, T I Crean, S B Calderwood

Open access · bronzeAbstract read
In one paragraph

Article in Infection and immunity, 1997. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers.

0numbers the graph read from it
0cells of the map it votes in
37citing papers in PubMed
3.5field-weighted citation impact, top 7% 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

37 citing papers in PubMed, 99 citations in OpenAlex.

  1. Review
  2. Review
  3. Immunization Strategies Against Clostridioides difficile.Advances in experimental medicine and biology · 2024
    Review
  4. Review
  5. Major pathogenicIranian journal of basic medical sciences · 2022
    Review
  6. Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Antibodies for treatment of Clostridium difficile infection.Clinical and vaccine immunology : CVI · 2014
    Review
  13. Article
  14. Article
  15. Vaccines against Clostridium difficile.Human vaccines & immunotherapeutics · 2014
    Review
  16. Article
  17. Article
  18. The host immune response to Clostridium difficile infection.Therapeutic advances in infectious disease · 2013
    Review
  19. Article
  20. Article
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

6 authors at 1 institution in 1 country.

E T RyanInfectious Disease Division, Massachusetts General Hospital, Boston 02114, USA.
J R Butterton
R N Smith
P A Carroll
T I Crean
S B Calderwood
Massachusetts General Hospital · US

Funding

Mucosal Immunity to Antigens Expressed by V.choleraeR01AI040725 · NIAID · MASSACHUSETTS GENERAL HOSPITAL · PI RYAN, EDWARD T. · 1997 to 2006
$2.5M
V CHOLERAE AS A VECTOR FOR INDUCING MUCOSAL IMMUNITYK08AI001332 · NIAID · MASSACHUSETTS GENERAL HOSPITAL · PI RYAN, EDWARD T. · 1996 to 2000
$125k
CHOLERA-VECTORED DELIVERY SYSTEM FOR PERTUSSIS ANTIGENSK08AI001386 · NIAID · MASSACHUSETTS GENERAL HOSPITAL · PI BUTTERTON, JOAN R · 1996 to 1998
–
NIAID NIH HHS AI40725NIAID NIH HHS KO8 AI01332NIAID NIH HHS KO8 AI01386NIAID NIH HHS R01 AI040725
6 · The paper itself

Abstract

Clostridium difficile causes pseudomembranous colitis through the action of Rho-modifying proteins, toxins A and B. Antibodies directed against C. difficile toxin A prevent or limit C. difficile-induced colitis. We engineered plasmid pETR14, containing the hlyB and hlyD genes of the Escherichia coli hemolysin operon, to express a fusion protein containing 720 amino acid residues from the nontoxic, receptor-binding, carboxy terminus of C. difficile toxin A and the secretion signal of E. coli hemolysin A. We introduced pETR14 into Vibrio cholerae and found that the toxin A-HlyA fusion protein was secreted by a number of V. cholerae strains and recognized by both monoclonal and polyclonal anti-C. difficile toxin A antibodies. We introduced pETR14 into an attenuated V. cholerae strain, O395-NT, and inoculated rabbits orally with this construct. Colonization studies disclosed that the V. cholerae vector containing pETR14 was recoverable from rabbit ilea up to 5 days after oral inoculation. Vaccination produced significant systemic anti-C. difficile toxin A immunoglobulin G and anti-V. cholerae vibriocidal antibody responses. Vaccination also produced significant protection against toxin A in an ileal loop challenge assay, as assessed by determination of both fluid secretion and histological changes. These results suggest that the hemolysin system of E. coli can be used successfully in V. cholerae vector strains to effect secretion of large heterologous antigens and that a V. cholerae vector strain secreting a nontoxic, immunogenic portion of C. difficile toxin A fused to the secretion signal of E. coli HlyA induces protective systemic and mucosal immunity against this toxin.

Indexed as

Clostridioides difficileEscherichia coli ProteinsGenetic VectorsAdministration, OralAnimalsBacterial ProteinsBacterial ToxinsBacterial VaccinesEnterotoxinsHemolysin ProteinsImmunizationImmunoglobulin GRabbitsVaccines, AttenuatedVibrio choleraeBacterial ProteinsBacterial ToxinsBacterial VaccinesEnterotoxinsEscherichia coli ProteinsHemolysin ProteinsHlya protein, E coliImmunoglobulin GtcdA protein, Clostridium difficileVaccines, Attenuated

Identifiers

PMID9199470
PMCPMC175412
OpenAlexW2154389934

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.