Evidence map›Paper›PMID 9723975›Full record

ArticleJournal of anatomy1998

The effects of age on the overall population and on sub-populations of myenteric neurons in the rat small intestine.

R J Johnson, M Schemann, R M Santer, T Cowen

Open access · bronzeAbstract read
In one paragraph

Article in Journal of anatomy, 1998. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
1.6field-weighted citation impact, top 17% 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

25 citing papers in PubMed, 102 citations in OpenAlex.

  1. Review
  2. Review
  3. The Aging Enteric Nervous System.International journal of molecular sciences · 2023
    Review
  4. Article
  5. Article
  6. Article
  7. Article
  8. Review
  9. Article
  10. Article
  11. Article
  12. Article
  13. 5-HT4 receptor-mediated neuroprotection and neurogenesis in the enteric nervous system of adult mice.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2009
    Article
  14. Effect of age on the enteric nervous system of the human colon.Neurogastroenterology and motility · 2009
    Article
  15. Article
  16. Article
  17. Article
  18. Innervation of the gastrointestinal tract: patterns of aging.Autonomic neuroscience : basic & clinical · 2007
    Review
  19. Long-term effects of extrinsic denervation on VIP and substance P innervation in circular muscle of rat jejunum.Journal of gastrointestinal surgery : official journal of the Society for Surgery of the Alimentary Tract · 2007
    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

4 authors at 4 institutions in 2 countries.

R J JohnsonDepartment of Anatomy and Developmental Biology, Royal Free Hospital School of Medicine, London, UK.
M Schemann
R M Santer
T Cowen
The Royal Free Hospital · GBUniversity College London · GBUniversity of Veterinary Medicine Hannover, Foundation · DEUniversity of Wales · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Previous studies on ageing animal and human subjects have demonstrated a significant overall decline in neuronal numbers in the myenteric plexus of the enteric nervous system (ENS). Our study aimed to confirm this observation by counting myenteric neurons stained with the panneuronal markers PGP 9.5 and NADH-diaphorase. We also wished to examine the possibility that particular subpopulations of neurons are vulnerable. Therefore, we have immunostained and counted a number of nerve cell groups within the myenteric plexus of old and young Sprague Dawley rats using markers which reflect some of the neuronal phenotypes present, including ChAT and VIP. The number of neurons demonstrating NADH-diaphorase activity was significantly reduced (P < 0.05) by approximately 15 % in old rats. However, the number of neurons stained for PGP 9.5 immunohistochemistry was not reduced and demonstrated larger numbers of neurons than the NADH-diaphorase method. None of the other neuronal markers studied showed any significant reductions with age. In contrast to previous work, this study has gathered little evidence for extensive cell loss in the myenteric plexus of the aged rat, either in overall populations, or in any of the principal functional groups of neurons.

Indexed as

AgingAnimalsBiomarkersCholine O-AcetyltransferaseDihydrolipoamide DehydrogenaseEnkephalin, MethionineIleumImmunohistochemistryIntestine, SmallMyenteric PlexusNeuronsNeuropeptide YRatsRats, Sprague-DawleySomatostatinSubstance PBiomarkersCholine O-AcetyltransferaseDihydrolipoamide DehydrogenaseEnkephalin, MethionineNeuropeptide YSomatostatinSubstance PThiolester HydrolasesUbiquitin ThiolesteraseVasoactive Intestinal Peptide

Identifiers

PMID9723975
PMCPMC1467802
OpenAlexW1974027381

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.