Evidence map›Paper›PMID 19608535›Full record

ArticleInvestigative ophthalmology & visual science2009

Characterization of P2X7 purinergic receptors and their function in rat lacrimal gland.

Robin R Hodges, Joanna Vrouvlianis, Marie A Shatos, Darlene A Dartt

Open access · bronzeAbstract read
In one paragraph

Article in Investigative ophthalmology & visual science, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
2.4field-weighted citation impact, top 14% 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

18 citing papers in PubMed, 27 citations in OpenAlex.

  1. Inflammasomes in Sjögren's Disease: Exploring the Therapeutic Value.International journal of molecular sciences · 2026
    Review
  2. Article
  3. Article
  4. Review
  5. Article
  6. TFOS DEWS II pain and sensation report.The ocular surface · 2017
    Review
  7. Review
  8. Signaling Pathways of Purinergic Receptors and Their Interactions with Cholinergic and Adrenergic Pathways in the Lacrimal Gland.Journal of ocular pharmacology and therapeutics : the official journal of the Association for Ocular Pharmacology and Therapeutics · 2016
    Review
  9. Article
  10. Review
  11. Article
  12. Article
  13. Article
  14. Inhibition of the P2X7 receptor reduces cystogenesis in PKD.Journal of the American Society of Nephrology : JASN · 2011
    Article
  15. Article
  16. Article
  17. Article
  18. 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 2 institutions in 1 country.

Robin R HodgesSchepens Eye Research Institute, Department of Ophthalmology, Harvard Medical School, Boston, Massachusetts 02114, USA. robin.hodges@schepens.harvard.edu
Joanna Vrouvlianis
Marie A Shatos
Darlene A Dartt
Massachusetts Eye and Ear Infirmary · USSmith-Kettlewell Eye Research Institute · US

Funding

MECHANISM OF LACRIMAL GLAND SECRETIONR01EY006177 · NEI · SCHEPENS EYE RESEARCH INSTITUTE · PI DARTT, DARLENE A · 1985 to 2012
$5.7M
NEI NIH HHS EY06177NEI NIH HHS R01 EY006177
6 · The paper itself

Abstract

purposeTo characterize the effects of P2X(7) purinergic receptors on lacrimal gland function.

methodsP2X(7) purinergic receptors were identified by RT-PCR, Western blot analysis, and immunofluorescence techniques. Rat lacrimal gland acini were isolated by collagenase digestion. Acini were incubated with the fluorescent indicator molecule fura 2, and [Ca(2+)](i) was measured by a fluorescence imaging system. Protein secretion was measured with a fluorescence assay system. Activation of ERK 1/2 was determined by Western blot analysis with an antibody against phosphorylated (active) ERK 1/2.

resultsP2X(7) receptors were present in the lacrimal gland by RT-PCR and Western blot analysis. These receptors were located in the membranes of acinar and ductal cells and the cytoplasm of acinar cells. Activation of P2X(7) receptors with (benzoylbenzoyl)adenosine 5'-triphosphate increased [Ca(2+)](i), peroxidase secretion, and ERK 1/2 activation, each of which was inhibited by the P2X(7) receptor inhibitors Brilliant Blue G or A 438079.

conclusionsP2X(7) purinergic receptors are present in rat lacrimal gland and when stimulated increase [Ca(2+)](i), protein secretion, and ERK 1/2 activation.

Indexed as

AnimalsBlotting, WesternCalciumCell MembraneEnzyme ActivationFluorescent Antibody Technique, IndirectFura-2Lacrimal ApparatusMaleMitogen-Activated Protein Kinase 1PhosphorylationRatsRats, Sprague-DawleyReceptors, Purinergic P2Receptors, Purinergic P2X7Reverse Transcriptase Polymerase Chain ReactionCalciumFura-2Mapk1 protein, ratMitogen-Activated Protein Kinase 1P2rx7 protein, ratReceptors, Purinergic P2Receptors, Purinergic P2X7

Identifiers

PMID19608535
PMCPMC2819099
OpenAlexW1991137561

What OpenQuestion holds

Textmetadata
LicenceTDM
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.