Evidence map›Paper›PMID 10358127›Full record

ArticleThe Journal of physiology1999

Does the guinea-pig ileum obey the 'law of the intestine'?

N Spencer, M Walsh, T K Smith

Abstract read
In one paragraph

Article in The Journal of physiology, 1999. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers.

0numbers the graph read from it
0cells of the map it votes in
32citing 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

32 citing papers in PubMed.

  1. Article
  2. The enteric nervous system.Physiological reviews · 2023
    Review
  3. Article
  4. Embryogenesis of the peristaltic reflex.The Journal of physiology · 2019
    Article
  5. Article
  6. Article
  7. Article
  8. Mechanosensitivity in the enteric nervous system.Frontiers in cellular neuroscience · 2015
    Review
  9. Article
  10. Article
  11. Article
  12. Regulation of gastrointestinal motility--insights from smooth muscle biology.Nature reviews. Gastroenterology & hepatology · 2012
    Review
  13. Article
  14. Review
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Translating Trendelenburg; back to the future.Naunyn-Schmiedeberg's archives of pharmacology · 2006
    Review
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

3 authors.

N SpencerDepartment of Physiology and Cell Biology, University of Nevada School of Medicine, Reno, NV 89557, USA.
M Walsh
T K Smith

Funding

Relex Pathways Controlling Intestinal MotilityR01DK045713 · NIDDK · UNIVERSITY OF NEVADA RENO · PI SMITH, TERENCE KEITH · 1999 to 2012
$3.1M
NIDDK NIH HHS R01 DK045713NIDDK NIH HHS R01 DK45713
6 · The paper itself

Abstract

1. We report the first simultaneous mechanical reflex responses of the longitudinal muscle (LM) and circular muscle (CM) layers of the guinea-pig ileum following mucosal stimulation and distension in vitro. 2. Dissection techniques were used to prevent mechanical interaction between the LM and CM layers both oral and anal to a stimulus site. 3. All graded stimuli produced graded contractions of both the LM and CM orally and anally to the stimulus. Contractions occurred synchronously in the LM and CM and under no circumstances were inhibitory responses recorded in either muscle layer, despite the presence of ongoing cholinergic tone in both the LM and CM. Contractions were abolished by tetrodotoxin (1.6 microM). 4. Local brush stroking of the mucosa evoked a peristaltic wave which readily conducted distally over 13 cm, without the presence of fluid in the lumen. No descending relaxation was observed. 5. Apamin (300 nM) disrupted evoked peristaltic waves and significantly increased the rate-of-rise of the LM and CM contractions anal to a stimulus, and the LM oral to a stimulus. 6. Nomega-nitro-L-arginine (100 microM), a nitric oxide synthesis inhibitor, had no overall significant effect on the characteristics of the LM and CM contractions, although on occasion an enhancement in their peak amplitude was noted. 7. It is suggested that the guinea-pig ileum does not conform to the 'law of the intestine' as postulated by Bayliss & Starling (1899). Rather, local physiological stimulation of the ileum elicits a contraction both orally and anally to a stimulus, which occurs synchronously in both the CM and LM layers. Apamin-sensitive inhibitory neurotransmission modulates the rate-of-rise of the anal contraction of the CM, possibly to generate distal propulsion.

Indexed as

Anal CanalAnimalsApaminAtropineGuinea PigsHexamethoniumHistamineIleumIntestinal MucosaIn Vitro TechniquesMouthMuscle, SmoothNitroarginineNitroprussidePeristalsisPhysical StimulationApaminAtropineHexamethoniumHistamineNitroarginineNitroprussideTetrodotoxin

Identifiers

PMID10358127
PMCPMC2269390

What OpenQuestion holds

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Read underepoch 390

Registered trials

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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.