Evidence map›Paper›PMID 19210574›Full record

ArticleJournal of cellular and molecular medicine2009

Lactobacillus reuteri enhances excitability of colonic AH neurons by inhibiting calcium-dependent potassium channel opening.

Wolfgang A Kunze, Yu-Kang Mao, Bingxian Wang, Jan D Huizinga, Xuelian Ma, Paul Forsythe, John Bienenstock

Open access · bronzeAbstract read
In one paragraph

Article in Journal of cellular and molecular medicine, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 146 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
146citing papers in PubMed, 1 pooled it
10.7field-weighted citation impact, top 1% 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

146 citing papers in PubMed, 1 synthesis or guideline pooled it, 320 citations in OpenAlex.

  1. Frontiers in behavioral neuroscience · 2021
    Pooled it
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  7. LRRK2NPJ Parkinson's disease · 2026
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  18. Journal of Parkinson's disease · 2025
    Review
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  20. Article

86 more citing papers are in PubMed but not listed here.

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 2 institutions in 1 country.

Wolfgang A KunzeThe Brain-Body Institute, St. Joseph's Healthcare, Hamilton, ON, Canada.
Yu-Kang MaoThe Brain-Body Institute, St. Joseph's Healthcare, Hamilton, ON, Canada.
Bingxian WangDepartment of Medicine, McMaster University, Hamilton, ON, Canada.
Jan D HuizingaDepartment of Medicine, McMaster University, Hamilton, ON, Canada.
Xuelian MaThe Brain-Body Institute, St. Joseph's Healthcare, Hamilton, ON, Canada.
Paul ForsytheThe Brain-Body Institute, St. Joseph's Healthcare, Hamilton, ON, Canada.
John BienenstockThe Brain-Body Institute, St. Joseph's Healthcare, Hamilton, ON, Canada.
St. Joseph’s Healthcare Hamilton · CAMcMaster University · CA

Funding

Canadian Institutes of Health Research
6 · The paper itself

Abstract

Probiotics are live non-pathogenic commensal organisms that exert therapeutic effects in travellers' diarrhea, irritable bowel syndrome and inflammatory bowel disease. Little is known about mechanisms of action of commensal bacteria on intestinal motility and motility-induced pain. It has been proposed that probiotics affect intestinal nerve function, but direct evidence for this has thus far been lacking. We hypothesized that probiotic effects might be mediated by actions on colonic intrinsic sensory neurons. We first determined whether sensory neurons were present in rat colon by their responses to chemical mucosal stimulation and identified them in terms of physiological phenotype and soma morphotype. Enteric neuron excitability and ion channel activity were measured using patch clamp recordings. We fed 10(9)Lactobacillus reuteri (LR) or vehicle control to rats for 9 days. LR ingestion increased excitability (threshold for evoking action potentials) and number of action potentials per depolarizing pulse, decreased calcium-dependent potassium channel (IK(Ca)) opening and decreased the slow afterhyperpolarization (sAHP) in sensory AH neurons, similar to the IK(Ca) antagonists Tram-34 and clotrimazole. LR did not affect threshold for action potential generation in S neurons. Our results demonstrate that LR targets an ion channel in enteric sensory nerves through which LR may affect gut motility and pain perception.

Indexed as

AnimalsColonIon Channel GatingLimosilactobacillus reuteriMaleNeuronsPotassium ChannelsPotassium Channels, Calcium-ActivatedRatsRats, Sprague-DawleyPotassium ChannelsPotassium Channels, Calcium-Activated

Identifiers

PMID19210574
PMCPMC6529958
OpenAlexW1991772933

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.