Evidence map›Paper›PMID 23053894›Full record

ArticleDigestive diseases and sciences2013

Notch signaling promotes intestinal crypt fission in the infant rat.

Adrian G Cummins, Joshua A Woenig, Rino P Donato, Simon J Proctor, Gordon S Howarth, Phulwinder K Grover

Abstract read
PubMed Publisher
In one paragraph

Article in Digestive diseases and sciences, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
–field-weighted citation impact
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

5 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. 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.

Adrian G CumminsDepartment of Gastroenterology and Hepatology, The Queen Elizabeth Hospital, Woodville South, SA, 5011, Australia. cumthom@ozemail.com.au
Joshua A Woenig
Rino P Donato
Simon J Proctor
Gordon S Howarth
Phulwinder K Grover

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundGrowth of the small intestine in the infant rat is promoted by crypt fission and later by increased crypt cell proliferation. Notch signaling could promote crypt fission. Hes-1 is a Notch target gene.

aimWe assessed the effect of Notch signaling on intestinal crypt fission and on growth of the intestine in the infant rat.

methodsHes-1 expression was determined in the small intestine of litters of Hooded Wistar rats aged between 3 and 72 days. Hes-1 RNA expression was measured by quantitative RT-PCR. Four groups of rats (n = 8 or 9) were injected daily, ip, either with vehicle or with the Notch inhibitor DAPT at doses of 3, 10, and 30 mg/kg, from days 9 to 13 of life, and killed on day 14. A microdissection technique was used to measure crypt fission, mitotic count, and apoptotic count. Data were analyzed by ANOVA and by use of Dunnett's F test.

resultsHes-1 expression and crypt fission peaked on day 14. DAPT reduced Hes-1 immunostaining in proportion to dose. DAPT reduced villous area to 72 % (p < 0.01), 53 % (p < 0.001), and 38 % (p < 0.001) of control values for 3, 10 and 30 mg/kg doses, respectively, and reduced crypt fission to 53 % (p < 0.001) and 38 % (p < 0.001) of control values, respectively, for 10 and 30 mg/kg doses. Crypt mitotic count was not affected by any DAPT dose. DAPT at 10 and 30 mg/kg significantly increased apoptosis in crypts, by 6.5 and 4.8-fold, respectively.

conclusionsWe conclude that Notch signaling promotes crypt fission and growth of the intestine by maintaining low apoptosis of crypt cells.

Indexed as

AgingAnimalsApoptosisBasic Helix-Loop-Helix ProteinsDipeptidesDNA, ComplementaryFemaleGene Expression Regulation, DevelopmentalHomeodomain ProteinsIntestine, SmallMaleRatsRats, WistarReal-Time Polymerase Chain ReactionReceptors, NotchRNABasic Helix-Loop-Helix ProteinsDipeptidesDNA, ComplementaryHes1 protein, ratHomeodomain ProteinsN-(N-(3,5-difluorophenacetyl)alanyl)phenylglycine tert-butyl esterReceptors, NotchRNATranscription Factor HES-1

Identifiers

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.