Evidence map›Paper›PMID 35110595›Full record

ArticleScientific reports2022

pH-taxis drives aerobic bacteria in duodenum to migrate into the pancreas with tumors.

Hiroaki Shirai, Cocoro Ito, Kosuke Tsukada

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
1.2field-weighted citation impact, top 21% 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

7 citing papers in PubMed, 11 citations in OpenAlex.

  1. Review
  2. Review
  3. Review
  4. Autonomous phototaxis of hydrogel swimmers.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  5. Review
  6. Duodenal and pancreatic tissue microbiome profiles of PPI users and non-users.Pancreatology : official journal of the International Association of Pancreatology (IAP) ... [et al.] · 2024
    Article
  7. 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 at 1 institution in 1 country.

Hiroaki ShiraiGraduates School of Science and Technology, Keio University, 3-14-1 Hiyoshi Kohoku, Yokohama, Kanagawa, 223-8522, Japan. hs7796@keio.jp.
Cocoro ItoDepartment of Applied Physics and Physico-Informatics, Faculty of Science and Technology, Keio University, Yokohama, Japan.
Kosuke TsukadaGraduates School of Science and Technology, Keio University, 3-14-1 Hiyoshi Kohoku, Yokohama, Kanagawa, 223-8522, Japan.
Keio University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

As oral or intestinal bacteria have been found in pancreatic cystic fluid and tumors, understanding bacterial migration from the duodenum into the pancreas via hepato-pancreatic duct is critical. Mathematical models of migration of aerobic bacteria from the duodenum to the pancreas with tumors were developed. Additionally, the bacterial distributions under the pH gradient and those under flow were measured in double-layer flow based microfluidic device and T-shaped cylinders. Migration of aerobic bacteria from the duodenum into pancreas is counteracted by bile and pancreatic juice flow but facilitated by pH-taxis from acidic duodenum fluid toward more favorable slightly alkaline pH in pancreatic juice. Additionally, the reduced flow velocity in cancer patients, due to compressed pancreatic duct by solid tumor, facilitates migration. Moreover, measured distribution of GFP E. coli under the pH gradient in a microfluidic device validated pH-tactic behaviors. Furthermore, Pseudomonas fluorescens in hydrochloride solution, but not in bicarbonate solution, migrated upstream against bicarbonate flow of > 20 μm/s, with an advancement at approximately 50 μm/s.

Indexed as

Cell MovementBacteria, AerobicDuodenumHumansHydrogen-Ion ConcentrationPancreasPancreatic JuicePancreatic Neoplasms

Identifiers

PMID35110595
PMCPMC8810860
OpenAlexW4210756413

What OpenQuestion holds

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LicenceCC BY
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.