Evidence map›Paper›PMID 20105605›Full record

ArticleJournal of pediatric surgery2010

Murine model of Hirschsprung-associated enterocolitis II: Surgical correction of aganglionosis does not eliminate enterocolitis.

Lifu Zhao, Deepti Dhall, Zhi Cheng, Hanlin L Wang, Terence M Doherty, Catherine Bresee, Philip K Frykman

Open access · greenAbstract read
In one paragraph

Article in Journal of pediatric surgery, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
0.9field-weighted citation impact, top 22% 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

19 citing papers in PubMed, 25 citations in OpenAlex.

  1. Article
  2. Review
  3. Review
  4. Article
  5. Article
  6. Article
  7. Review
  8. Article
  9. Surgical Intervention to Rescue Hirschsprung Disease in a Rat Model.Journal of neurogastroenterology and motility · 2015
    Article
  10. Hirschsprung's associated enterocolitis.Current opinion in pediatrics · 2015
    Review
  11. Article
  12. Article
  13. Enteric neuron imbalance and proximal dysmotility in ganglionated intestine of theCellular and molecular gastroenterology and hepatology · 2015
    Article
  14. Review
  15. Review
  16. Article
  17. Article
  18. Imaging the Gastrointestinal Tract of Small Animals.Journal of neuroparasitology · 2010
    Article
  19. 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

7 authors at 1 institution in 1 country.

Lifu ZhaoDivision of Pediatric Surgery and The Pediatric Surgery Laboratory, Department of Surgery, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA.
Deepti Dhall
Zhi Cheng
Hanlin L Wang
Terence M Doherty
Catherine Bresee
Philip K Frykman
Cedars-Sinai Medical Center · US

Funding

ET3-EDNRB Signaling in Enterocolitis Associated with Colonic AganglionosisK08DK090281 · NIDDK · CEDARS-SINAI MEDICAL CENTER · PI FRYKMAN, PHILIP KENT · 2011 to 2015
$755k
NIDDK NIH HHS K08 DK090281
6 · The paper itself

Abstract

backgroundHirschsprung disease (HD) results from aganglionosis of the colon, is linked to acute and chronic enterocolitis (known as Hirschsprung-associated enterocolitis) despite successful corrective surgery, and can lead to bacteremia and even death. The genetic and molecular mechanisms underlying these disorders are largely unknown.

methodsWe developed a microsurgical corrective pull-through procedure in mice, and applied that to Ednrb(-/-) mice, which manifest aganglionic megacolon that is very similar to HD. Wild-type littermates (Ednrb(+/+)) also underwent identical surgery. At prespecified time points postoperatively, mice were sacrificed, and histopathologic analyses of intestinal inflammation were performed. Mice of both genotypes were sacrificed after the postoperative recovery period to determine if corrective surgery itself caused inflammation. Stooling patterns were assessed as well to determine if intestinal function normalized after surgery.

resultsThere was no difference in histopathological enterocolitis scores after recovery from surgery. Stooling patterns in Ednrb(-/-) and Ednrb(+/+) mice were similar postoperatively, suggesting normalization of intestinal function. However, with time, approximately 40% of Ednrb(-/-) mice developed clinical illness consistent with enterocolitis. No control (Ednrb(+/+)) mice developed clinical enterocolitis. Histopathological enterocolitis scores in the 40% of Ednrb(-/-) mice that developed clinical enterocolitis postoperatively were significantly worse than those of healthy postoperative Ednrb(-/-) mice. In contrast, none of the Ednrb(+/+) control mice exhibited postoperative long-term inflammation.

conclusionsMicrosurgical pull-through operation in Ednrb(-/-) mice produces a mouse model that closely resembles key features of Hirschsprung-associated enterocolitis, enabling controlled study of genetic and molecular mechanisms in Ednrb(-/-) mice and other genotypes that produce similar phenotypes.

Indexed as

Anal CanalAnastomosis, SurgicalAnimalsDefecationDigestive System Surgical ProceduresDisease Models, AnimalEnterocolitisFollow-Up StudiesGastrointestinal TransitGenotypeHirschsprung DiseaseHumansMegacolonMiceMice, Inbred BALB CMicrosurgery

Identifiers

PMID20105605
PMCPMC4375950
OpenAlexW2159404918

What OpenQuestion holds

Textmetadata
LicenceTDM
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.