Evidence map›Paper›PMID 23275617›Full record

ArticleAmerican journal of physiology. Gastrointestinal and liver physiology2013

Pharmacological inhibition of PAR2 with the pepducin P2pal-18S protects mice against acute experimental biliary pancreatitis.

E S Michael, A Kuliopulos, L Covic, M L Steer, G Perides

Open access · greenAbstract read
In one paragraph

Article in American journal of physiology. Gastrointestinal and liver physiology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 1 pooled it
2.3field-weighted citation impact, top 11% 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

19 citing papers in PubMed, 1 synthesis or guideline pooled it, 35 citations in OpenAlex.

  1. Pooled it
  2. PARting Neuroinflammation with Protease-Activated Receptor 2 Pepducins.The Journal of pharmacology and experimental therapeutics · 2024
    Article
  3. Review
  4. PAR2: The Cornerstone of Pancreatic Diseases.Physiological research · 2022
    Review
  5. Lipopeptide Pepducins as Therapeutic Agents.Methods in molecular biology (Clifton, N.J.) · 2022
    Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Review
  11. Article
  12. Review
  13. Article
  14. Article
  15. TRPV4 as a therapeutic target for joint diseases.Naunyn-Schmiedeberg's archives of pharmacology · 2015
    Review
  16. Pepducins and Other Lipidated Peptides as Mechanistic Probes and Therapeutics.Methods in molecular biology (Clifton, N.J.) · 2015
    Article
  17. Article
  18. Review
  19. 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

5 authors at 2 institutions in 1 country.

E S MichaelDepartment of Surgery, Tufts Medical Center, Boston, MA 02111, USA.
A Kuliopulos
L Covic
M L Steer
G Perides
Tufts University · USTufts Medical Center · US

Funding

THROMBIN RECEPTOR-G PROTEIN SIGNALING MECHANISMSR01HL064701 · NHLBI · TUFTS MEDICAL CENTER · PI KULIOPULOS, ATHAN · 2001 to 2011
$3.8M
The Mechanisms Responsible for Acute Biliary PancreatitisR01DK091327 · NIDDK · TUFTS MEDICAL CENTER · PI STEER, MICHAEL · 2011 to 2015
$1.7M
Protease Activated Receptors in Cancer InvasionR01CA104406 · NCI · TUFTS MEDICAL CENTER · PI COVIC, LIDIJA · 2005 to 2009
$1.6M
NCI NIH HHS R01-CA-104406NHLBI NIH HHS R01-HL-64701NIDDK NIH HHS R01 DK091327NIDDK NIH HHS R01-DK-091327
6 · The paper itself

Abstract

Pancreatic acinar cells express proteinase-activated receptor-2 (PAR2) that is activated by trypsin-like serine proteases and has been shown to exert model-specific effects on the severity of experimental pancreatitis, i.e., PAR2(-/-) mice are protected from experimental acute biliary pancreatitis but develop more severe secretagogue-induced pancreatitis. P2pal-18S is a novel pepducin lipopeptide that targets and inhibits PAR2. In studies monitoring PAR2-stimulated intracellular Ca(2+) concentration changes, we show that P2pal-18S is a full PAR2 inhibitor in acinar cells. Our in vivo studies show that P2pal-18S significantly reduces the severity of experimental biliary pancreatitis induced by retrograde intraductal bile acid infusion, which mimics injury induced by endoscopic retrograde cholangiopancreatography (ERCP). This reduction in pancreatitis severity is observed when the pepducin is given before or 2 h after bile acid infusion but not when it is given 5 h after bile acid infusion. Conversely, P2pal-18S increases the severity of secretagogue-induced pancreatitis. In vitro studies indicate that P2pal-18S protects acinar cells against bile acid-induced injury/death, but it does not alter bile acid-induced intracellular zymogen activation. These studies are the first to report the effects of an effective PAR2 pharmacological inhibitor on pancreatic acinar cells and on the severity of experimental pancreatitis. They raise the possibility that a pepducin such as P2pal-18S might prove useful in the clinical management of patients at risk for developing severe biliary pancreatitis such as occurs following ERCP.

Indexed as

Acinar CellsAnimalsBile Acids and SaltsBiliary Tract DiseasesCalciumCalcium SignalingCeruletideCholangiopancreatography, Endoscopic RetrogradeChymotrypsinogenColoring AgentsEnzyme ActivationEnzyme PrecursorsGallstonesIndicators and ReagentsLipopeptidesMiceBile Acids and SaltsCalciumCeruletideChymotrypsinogenColoring AgentsEnzyme PrecursorsIndicators and ReagentsLipopeptidesP2pal-18S pepducinPropidiumReceptor, PAR-2Trypsinogen

Identifiers

PMID23275617
PMCPMC3602677
OpenAlexW2146641981

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.